2015 ISSUECUSTOMER MAGAZINE OF BAUER RESOURCES

25 years of Bauer Umwelt

Soil treatment plants in transition

Water supply in Senegal

en

glish

4 Environment

- 22 years of successful cooperation

- Growing up with BMU

- Bauer Umwelt’s largest assignment yet

- 25 years of environmental technology

- Waste management in the desert

- Implementation of a new in-situ process

- BMU expands services in Hamburg

- Sometimes we still get soil

- A recreation park for Kierspe

15 Natural resources

- Drilling for earthquake protection

16 Water

- Complex groundwater treatment

- Stainless steel wire wrapped screen from GWE

- Interesting facts about beer

- Diffi cult well drilling in Senegal

- New ideas from Bauer Water

Contents

Industrial Waste

Water

Process Water

Produced Water

NORM

Constructed Wetlands

Modelling and Well Design

Construction Material for Wells

and Geothermal Energy

Water Distribution

Irrigation Systems

Brownfi eld Remediation

Landfi ll Restoration

Decommissioning

Demolition

Hazardous Waste

Management

Soil Treatment and Waste

Management

Exploration Drilling

Deep Geothermal Drilling

Oil and Gas Drilling

Well Drilling

Blast Hole Drilling

2 BEST in fo / 2015

Water – Environment –Natural Resources

Managing Board of

BAUER Resources GmbH –

Peter Hingott (left) and

Johann Mesch

3BEST in fo / 2015

With the services and products we supply in the three business

areas, we see ourselves as a partner to our customers.

In addition to an extensive range of services, from consultation

and planning to project execution, we are also available to super-

vise operational plants, as you will read in the following pages.

All of this we offer with the support of the globally active BAUER

Group, a corporate group that observes high international

standards in health and safety, compliance, and quality. Along

with Construction and Equipment, the Resources segment is

geared towards such forward looking topics for the

development of our world.

With this current edition of our magazine BESTinfo we would like

to take you on a journey into the multifaceted world of Bauer

Resources and show you how our team can look to the future

with confi dence and passion.

Find out what technologies our specialists have at their com-

mand, what kind of know-how and experience they are gather-

ing, and what new techniques they are developing. Values we

would be happy to offer you too.

Warm greetings,

Johann Mesch Peter Hingott

Dear Customers and Partners,Today you are holding in your hands our customer magazine

BESTinfo, in which all the companies of the Bauer Resources

Group will be presenting themselves in future. The previous edi-

tions of our magazine BESTinfo were published on the initiative

of Bauer Umwelt, which remains one of the most signifi cant

companies in the Resources segment. In 2015, Bauer Umwelt

can look back on 25 active years of activity in environmental

technology and waste disposal. We’ve dedicated a few pages

to the company – established in 1990 as Bauer und Mourik

Umwelttechnik (BMU) – with a retrospective and some personal

memories, together with a short history of the company.

With the newly designed BESTinfo we want to address all cus-

tomers and partners of Bauer Resources and present the third

pillar of the BAUER Group, along with our services and our ver-

satility in the business areas of water, environment, and natural

resources.

We wish to explain how our unparalleled expertise, technolo-

gies and techniques, in combination with our experienced and

highly motivated employees and specialist personnel, develop

to synergies. Our introductory graphic “Water - Environment -

Natural resources” provides a nice illustration of this idea.

Bauer Resources is organized on a regional basis as far as op-

erational tasks are concerned, so that customers in all regions

have a competent local contact person. While Europe was the

original base of operations, we established ourselves in the

African and the Middle Eastern markets. Those markets were

then gradually expanded to include the Far East and activities

in North America. Today, Bauer Resources has a list of refer-

ences which includes projects all over the globe, from Canada

to Australia.

BEST in fo / 20154

Bauer Umwelt and the Helmholtz Center for Environmental Research (UFZ)

The BAUER Group has been actively

working in environmental technology

for 25 years. When the environment

company was established in 1990 –

following several name-changes it is

now called BAUER Umwelt GmbH –

environmental issues, and especially

soil remediation, were a completely

new challenge in Germany. All the

participants – from the politicians to

the companies responsible for imple-

mentation – were still in an orientation

phase back then. Even the Federal

Ministry for the Environment, which

was formed only in 1986, was still a

very young institution. In these years,

Bauer’s representatives were search-

ing for competent engineering offi ces.

One of our fi rst partners from those

days has a few words to say here.

Prof. Holger Weiß from the Helmholtz

Center for Environmental Research

offers the following synopsis of the

partnership with Bauer Umwelt:

Bauer Umwelt and the Helmholtz Center

for Environmental Research (UFZ) have

been working successfully together for

many years on the development of bio-

technological techniques for purifying

soil and water. All projects have the

common objective of reducing the high

operating costs of technologies to more

effi cient ‘eco tech’ processes, especially

for locations where long term measures

are required.

The success story of this collaboration

between Bauer Umwelt and the applied

environmental research at UFZ started

as early as 1993. Following an investi-

gation of the fundamentals, we started

the pilot-scale conversion of a former

agricultural silage plant in Hirschfeld,

central Saxony to a treatment center for

microbiological soil purifi cation. Once

we managed to remove organic pollu-

tants such as TPH and PAH using vari-

ous percolation systems, we worked in

joint projects to develop techniques for

bioleaching of sludge and sediment

contaminated with heavy metals. As

part of one project it was possible to

develop a biotechnological conditioning

process for improving the structure of

dredge material.

Over the years, Bauer Umwelt has carried out a number of individual soil treatment assignments in the traditional industrial location of Leuna in Central Germany. A system of separating walls is used toisolate toxicants in the groundwater and soil.

22 years of successful cooperation in environ-mental remediation

ENVIRONMENT

BEST in fo / 2015 5

At the Hirschfeld plant it was possible to

demonstrate that the biodegradation of

herbicides in contaminated soils can be

increased signifi cantly through bioaug-

mentation techniques. A rhizosphere

treatment plant was developed and opti-

mized for the purifi cation of percolation

water coming from a soil treatment plant

and contaminated with nitroaromatics.

The development of the two-tiered verti-

cal fi lter system and now its full-stage

implementation at our Leuna location is

one of our outstanding joint projects.

Originally developed for the aerobic

degradation of benzene and MTBE in

contaminated ground water, the tech-

nique is now also being used at former

carbonization sites such as Schwarze

Pumpe, where BTEX and alkylphenols

are degraded. This technique is currently

being optimized for further groups of

harmful substances and possess signifi -

cant market potential.

ENVIRONMENT

6 BEST in fo / 2015

In the BAUER Group, environmental

technology has been the responsibi-

lity of an independent company for

25 years now. Petra Ehrenfried and

Willi Mair have been helping to orga-

nize BMU since the very beginning.

Many roads lead to BMU

Petra Ehrenfried | Memory of the early

years … That simple offi ce we had back

then, under the sloping roof of the old

building, saw the beginning of several

Bauer divisions which were later very

successful ... before us there was ma-

chine sales.

Willi Mair | It was really by chance that I

came to BMU. Bauer’s Head of Person-

nel, Ernst Stümpfl e, asked if I could

imagine to work in a small environmental

company which had just been estab-

lished. I had trained as a shop fi tter with

Bauer, and then studied mechanical en-

gineering. When the market for mechani-

cal engineering in Germany showed

signs of weakening, I decided to specia-

lize in environmental and process engi-

neering. Personal connections to the

family of Claus Brede (1930 to 1998), the

original Managing Director of BMU, was

another decisive factor – and so I came

to BMU.

Petra Ehrenfried | I studied process en-

gineering in Mannheim. Towards the end

of my studies I started looking for a job:

What companies were working in the

area of environmental technology? I

found an advertisement by BMU and I

applied. Actually, I only went along to

practice my interview technique! But

Claus Brede’s enthusiasm was inspiring,

and he showed me the whole company

and introduced me to everyone. That

was on October 24, 1991. Next day I re-

ceived the call – I could start on Novem-

ber 1 st. I started on January 1 st, 1992,

after all I still had to fi nish my degree.

The partnership with Mourik

Willi Mair | Our closest partner in the

formative years was the Dutch company

Mourik Groot-Ammers, together with

whom BMU – Bauer und Mourik Um-

welttechnik – was founded.

Petra Ehrenfried | Communication with

Mourik in those days was excellent. The

Dutch were usually personally on-site for

project execution. Jan Hartog, a mana-

ger from Mourik, often came to see us in

the offi ce.

Willi Mair | Looking back at our fi rst big

assignment, which was a major step for-

ward for us, it was above all the Mourik

people who were involved. That was the

remediation of the gasworks site at the

main train station in Bremen in 1994.

Petra Ehrenfried | Back then BMU was

a relatively small company with fi fteen

employees. Following this highlight in

Bremen there were no more large pro-

jects for a while, but we went on doing

many smaller projects. And we certainly

made money doing that too.

Willi Mair | It was quite typical for the

early days that we needed to improvise a

lot. Very helpful to me was the fact that I

knew the people in the Bauer workshops

from my apprenticeship days, whether it

was a matter of pumps or electrical

equipment. It wasn’t long before our un-

derstanding of the job was changing:

“Green ethics” are certainly important as

a philosophical position, but even envi-

ronmental technology is a business.

Petra Ehrenfried | We were all young

people in environmental technology, we

were beginners, fresh from school and

college. The only older one was Claus

Brede, and just before us came Johann

Mesch, who had some work experience.

When we registered the acronym BMU,

there was uncertainty about whether it

would be accepted – BMU also stands

for Bundesministerium Umwelt, the Fed-

eral Ministry of the Environment. We

joked that it could equally stand for

Brede-Mesch-Umwelt. But BMU was

accepted, though that was quite a sur-

prise.

The industry still had to fi nd itself

Willi Mair | The entire fi eld of environ-

mental technology was new back then,

and there were many young people in

the engineering offi ces who were just

out of college. The authorities were also

trying to get a handle on the fi eld. Of

course they had to proceed strictly ac-

cording to the letter of the law – in rela-

tion to limit values, for example – without

taking individual circumstances into ac-

count. Nowadays, even the authorities

have plenty of experience; it has become

a matter of routine.

Petra Ehrenfried | Everyone involved

was on a learning curve in those days:

the authorities, the engineering offi ces,

and the companies we contracted.

Certain things would be done differently

today.

Willi Mair | One of the problems we had

in the early days had to do with our posi-

tion among the Bauer companies. In the

area of special foundation works in par-

ticular there was a lack of appreciation

for our fi eld. There was an agreement

within the Group, that the environment

company would handle the environment

contracts. Nevertheless, the Construc-

tion segment fulfi lled a few environment

contracts itself, especially when there

were special foundation works involved.

We had the same experience with engi-

neering offi ces, who told themselves:

Install a fi lter system ... we can do that

ourselves. We really did have to fi ght for

our position in the environment market!

Petra Ehrenfried | From 1994 onwards

my tasks included establishing a BMU

branch in Oberursel, for the Frankfurt ar-

ea. I was responsible for preparing quo-

tations and cost-estimates. It was a

Growing up with BMU ...

ENVIRONMENT

7BEST in fo / 2015

was the disposal of chemical warfare

agents in Traunreut. Here our people

worked under the highest possible pro-

tection to fi ll the material into drums. An

ambulance stood ready at all times.

Petra Ehrenfried | With its soil purifi ca-

tion centers, BMU is now in possession

of properties with large halls. These are

well-equipped treatment areas with

emission- and air-purifi cation systems for

a continuous change of air. The soil

treatment center in Schrobenhausen is

Germany’s fi rst plant with underfl oor

heating. This ensures that even in Winter

the micro-organisms have the optimum

temperature for their work.

BMU at Bauer Resources

Petra Ehrenfried | The structures have

altered since our integration in Bauer

Resources, but BMU’s objectives and its

way of working have not changed. Now

we are part of a network that we can

use. Of course we procure materials

from the Resources companies, from

GWE for example. We do profi t from

the Bauer connection.

Willi Mair | Wherever we belong – we’ve

always had an excellent climate in the

workplace. Many people who have left

BMU were glad to come back again.

question of raising the level of awareness

about our company and acquiring cus-

tomers. I had an offi ce in the local Bauer

branch, where I was smiled at initially.

We had yet to overcome the opposition

from Special Foundation Works.

Willi Mair | It is even more rewarding

today when we win a project like Gren-

zach, in which BAUER Spezialtiefbau is

an integral part of our activities.

Learning with partners

Petra Ehrenfried | A crucial aspect,

almost from the beginning on – due to

initiatives by Claus Brede – were the

collaborations with institutes. One of the

fi rst larger projects involved the experi-

ments, together with the Karlsruhe Tech-

nical University, with soil vapor extraction

to remediate the gasworks site in Karls-

ruhe. Cooperation with research bodies

was always an important aspect, in

some cases there were even fi nancial

incentives.

Willi Mair | The learning phase in envi-

ronmental technology had many indivi-

dual facets. The occupational health and

safety of the employees was an issue

from the very beginning. I remember the

fi rst time we had to work in protective

suits – that really was cool! However:

The protective suits generally have to be

breathable, but it quickly gets very hot in

there, and that means a risk of dehydra-

tion. We also had to learn to use the

right fi lters in the protective masks.

Petra Ehrenfried | Speaking of the

learning phase: Over the years BMU also

developed several of its own techniques.

On-site remediation, for example, as in

Sembach in the Rhineland-Palatinate,

where contaminated soil was poured

onto an abandoned airstrip in piles and

turned at regular intervals, in order to in-

troduce oxygen for the work of the micro-

organisms.

Willi Mair | And of course there is our

own plant construction with the procure-

ment of components such as fans and

water-activated or air-activated carbon

fi lters, which are constructed to our own

plans. Nowadays plant construction

comes frequently from the Bauer

Resources companies, previously from

BWS, today from Esau & Hueber.

Petra Ehrenfried | The funnel & gate

technique is also interesting, whereby

contaminated ground water is conduc-

ted through fi lters in its direct of fl ow.

Willi Mair | Our experiences also include

problems which have almost been for-

gotten today and seem like historical

curiosities. In the early days, there were

no mobile phones on the building site.

We had a pager which made a brief

beeping sound to signal that you should

call the offi ce. Then you went looking for

a phone booth. So you had to be well-

equipped with coins or telephone cards.

BMU grews with its projects

Willi Mair | After 25 years of BMU we

naturally have an endlessly long list of

references, including many projects

which were especially challenging and

pushed to company to grow accordingly.

For instance, the “Phoenix” glass works

in Konstein, where they were already at-

tempting to deal with the heavy metal in

the soil before BMU was even estab-

lished. Or the Kertess chemical factory in

Hannover, where Johann Mesch himself

worked as site manager for a while. Dur-

ing production at this chemical factory,

toxicants were seeping into the soil up

until the 1970s.

Petra Ehrenfried | Or the Frankfurt Air

Base! An underground kerosene pipe

had sprung a leak, and a more than one

meter thick reservoir was formed on the

ground water. The work was primarily

diffi cult due to the strict access regula-

tions of the US military. And in the middle

of everything the Gulf War started.

Willi Mair | A really extreme project in

terms of health and safety protection

Signing the contract for the remediation of the Kesslergrube: From left, Dr. Richard Hürzeler

(Roche’s Overall Project Manager for the Kesslergrube remediation), Dr. Hagen Pfundner

(CEO of Roche Pharma AG), Günther Marzog (Managing Director of BAUER Umwelt GmbH),

Dr. Frank Tidden (Head of Sales, member of management board at BAUER Umwelt GmbH).

8 BEST in fo / 2015

Grenzach-Wyhlen – In July 2015, BAUER

Resources GmbH was awarded the con-

tract for remediation of the old Kessler-

grube landfi ll. The project will be execut-

ed by BAUER Umwelt GmbH, a subsi-

diary of BAUER Resources GmbH which

specializes in brownfi eld remediation.

With a value of more than one hundred

million euros, this is the BAUER Group’s

largest single contract to date.

The old Kesslergrube landfi ll is situated

in Grenzach-Wyhlen, a city located at the

border triangle of Germany, France and

Switzerland. It was used as a landfi ll site

for residential waste, construction rub-

ble, and industrial and chemical waste

from the mid-1950s until 1976. Roche

Pharma AG, a former user of the landfi ll

site, is the client of the project. Roche is

taking responsibility for their part of the

Kesslergrube landfi ll – Perimeter 1. They

are aiming for a sustainable remediation

of the section for which they are respon-

sible. The chosen remediation method,

complete excavation, meets the manda-

tory criteria of appropriateness, effi cien-

cy, effectiveness, and environmental sus-

tainability best.

Roche Pharma AG selected BAUER

Umwelt GmbH as general contractor for

the remediation of perimeter 1/3 NW of

the Kesslergrube landfi ll. They will be res-

ponsible for tasks such as the organiza-

tion and operation of the site, all founda-

tion works, the excavation, removal, and

thermal disposal of the soil, as well as

refi lling the excavated pit.

The concept submitted by BMU was

chosen by the client because of the cru-

cial part it plays in reducing the total du-

ration of the remediation project by one

year. This in turn makes an important

contribution to minimizing inconvenience

for residents and the Grenzach-Wyhlen

community.

The organization and operations on the

site started in August 2015. Services will

include raster sampling of the construc-

tion site, sampling and declaration analy-

sis of excavated batches, protection of

property, maintenance of traffi c areas,

occupational health and safety measures

for employees, multi-stage noise protec-

tion measures, hydraulic protection and

groundwater control in the pit area, and

measures to keep the pit dry during the

excavation phase. Bauer will also con-

struct and operate a temporary pier,

which will serve as a loading and unloa-

ding facility on the Rhine, for the delivery

of backfi ll material and construction site

equipment, and – once offi cial permits

are available – for the removal of excava-

ted material. The multi-stage treatment

plant for groundwater treatment will be

built on the east end of the pier. Bauer

will be responsible to install a washing

area for construction workers and equip-

ment, operated with locks to separate

BMU’s largest assignment to dateSensitive project near the border triangle of Germany, France,

and Switzerland

Image source: Press photo from Roche

ENVIRONMENT

BEST in fo / 2015 9

clean from contaminated areas. A tented

area will be installed with a ventilation

system including air treatment.

The primary task includes the excavation

and loading of approximately 280,000

metric tons of soil in special safety con-

tainers, the removal of these containers,

and their later transport by rail. The con-

taminated material will be brought for

thermal treatment. Backfi ll material for

refi lling the excavation pit will be deli-

vered as the excavation is going on.

Bauer Spezialtiefbau will secure the pit

using a secant pile wall that extends to a

depth of 23 meters. BMU is scheduled to

decommission the construction site in

mid-2020 and restore the ground surface

for future commercial or industrial use.

Bauer Umwelt sees the award for this

extensive project as confi rmation of their

outstanding expertise in the area of

brownfi eld remediation. BMU Managing

Directors Günther Marzog and Samer

Hijazi comment: “It is especially reward-

ing to be awarded this contract in the

year of our company’s 25th anniversary!”

25 years of environmental technology

1990 Establishment of BAUER und MOURIK Umwelttechnik GmbH; partner

Mourik originates from Grootammers in the Netherlands. Along with engi-

neer Claus Brede (†), graduate chemist Johann Mesch becomes Managing

Director

1993 First soil treatment center in Hirschfeld in Saxony

1994 First large project: Remediation of the gasworks site at the Bremen main

train station

1996 Soil treatment center in Bleicherode in Thuringia

1996 Partner Mourik leaves, Bauer acquires the shares

1996 Major contract for ground water purifi cation on the former premises of a

chemical factory in Hamburg-Moorfl eet

2002 Opening of soil treatment center in Schrobenhausen; Construction Site

Supplies and the Plant Construction workshop move into the former factory

Integration of PURE Umwelttechnik GmbH - constructed wetland technology

2003 Acquisition of FWS Filter- und Wassertechnik GmbH together with its sub-

sidiaries in Hungary, the UK, and Italy

2005 Renamed BAUER Umwelt GmbH

2006 Bauer Umwelt establishes subsidiaries in several countries; establishment of

the subsidiary BAUER Emirates Environment Services and Technologies Ltd.

2007 The environment group becomes part of a new business segment in the

BAUER Group: BAUER Resources GmbH; Peter Hingott is made Managing

Director of BMU

2010 Johann Mesch becomes Managing Director of BAUER Resources GmbH,

Peter Hingott conducts the business of BMU

The Nimr Oman project, the world’s largest constructed wetland for puri-

fying contaminated water in the petroleum industry, commences operations.

In Hamburg BMU opens another soil treatment center.

2013 Peter Hingott transfers to the board of management of BAUER Resources

GmbH, Günther Marzog and Samer Hijazi become the Managing Directors

of BMU

2015 In addition to the major contract in Grenzach-Wyhlen, Bauer Umwelt also

receives a major assignment from TÜV SÜD in Munich for demolition work,

soil treatment, and site clearance for the construction of a new administra-

tive building

ENVIRONMENT

10 BEST in fo / 201510

Muscat/Oman – The desert is not a gar-

bage dump. The Sultanate of Oman is

currently breaking new ground – espe-

cially in the crude oil industry – and

adopting an ecological approach. The

prime example is the world’s largest

constructed wetland in the oil process-

ing sector, which was implemented by

BAUER Nimr LLC, a subsidiary of BAUER

Resources GmbH. The expertise gath-

ered in this project – relating in particu-

lar to waste management and disposal

– is now being put to use for the oil

giant BP.

BP is currently developing a gas pro-

cessing plant in Oman, together with all

the necessary infrastructure, one of

BP’s largest new construction projects

in the gas sector. In the coming years,

more than 10,000 workers will be in-

volved in the construction. Due to the

fact that the gas fi eld of Khazzan is lo-

cated in a remote region of the desert,

the project entails considerable logisti-

cal challenges. Some camps have been

setup to accommodate people from all

over the world. The mechanical equip-

ment and building materials and sup-

plies are brought in to the concession

area. As with every project, various

fl ows of waste are generated here. In

order to protect the environment, BP

and the project management consultant

Jacobs have developed a comprehen-

sive waste management plan.

BAUER Nimr LLC was awarded the

contract for implementing this waste

management plan. “We are delighted to

have won this BP contract. This is con-

fi rmation of our expertise in handling

hazardous and non-hazardous waste

from the crude oil and natural gas in-

dustry,” commented Dennis Kronborg

Alexandersen, Sales & Business Deve-

lopment Manager. And he adds: “Sound

collaborations with partners from the re-

gion gives us the opportunity to offer

cost-effective solutions and services in

the area of waste management. At the

same time, we are promoting economic

growth in the region we are active in.”

BAUER Nimr LLC was responsible for

setting up waste separation and collec-

tion points at strategic locations in the

Khazzan gas fi eld. At present, the usual

domestic waste, including paper, card-

board and food waste, is collected and

disposed off outside the concession

area on the fi rst waste landfi ll in the Sul-

tanate. According to Project Manager

Alexander Roth: “The many companies

working in the crude oil and natural gas

industry are still dumping their waste on

open and unsecured garbage dumps.

Waste management in the desert

BAUER Nimr LLC provides waste management services for BP Khazzan

ENVIRONMENT

11BEST in fo / 2015

They have a limited storage capacity,

however, and although the burning of

waste is common, it is, of course, not a

sustainable practice. As soon as BP’s

permanent waste management area is

available, BAUER Nimr LLC will endeavor

to recycle waste materials.”

To collect hazardous waste, BAUER

Nimr LLC shall employ special vehicles

that have been approved by the royal

Omani police and civil defense forces.

The waste fl ows include among other

things expired chemicals, oil-containing

sludge, car batteries, contaminated

soils, and air and oil fi lters. “Through the

use of a waste manifest system we are

documenting where the waste origi-

nates. We then collect and store it in

BP’s temporary storage area for hazard-

ous waste. Once the national treatment

and processing plant for industrial

waste in Sohar goes into operation,

Bauer Nimr will transport the waste

out of the concession zone and bring

it for fi nal disposal,” explains Project

Manager Don Matthews.

The waste management project team

soon realized that in collaboration with

BP, the sixth largest oil and gas compa-

ny in the world, BAUER Nimr LLC could

raise its performance to a new level. In

this regard Alexander Roth says: “Be-

fore we gained approval for the use of

waste collection vehicles inside the con-

cession zone, there was a long prelimi-

nary phase to ensure that we were sat-

isfying all of BP’s rigorous health, safety,

and environmental standards. We also

had to meet stricter requirements con-

cerning quality, documentation, and re-

porting.”

As a subsidiary of BAUER Resources

GmbH, BAUER Nimr LLC can call on a

dense network of waste specialists, who

are experienced in the treatment of oil-

containing sludges, contaminated soils,

and of course radioactive materials, and

experts in the disposal of other hazard-

ous waste materials such as chemicals,

tires, electronic waste and hospital

waste. Bauer Resources is capable of

planning and implementing tailored waste

management solutions, particularly for

the crude oil and natural gas industry.

Implementation of a new in-situ processBauer Umwelt remediates a former gasworks site in Central Italy

Pesaro/Italy – Bauer Umwelt per-

formed the remediation of a former

gasworks in Pesaro, Central Italy,

the city’s most important property

remediation. This politically sensitive

project was carried out under the

eye of the public and the local au-

thorities.

Bauer Umwelt worked in coopera-

tion with the Italian company B. En-

ergy S.p.A. The contract was worth

1.2 million euros, and Bauer is res-

ponsible for about 40 percent. The

project was completed in two phases:

the fi rst was the excavation and dis-

posal of material from the badly con-

taminated areas, and the second

phase involved the application of

in-situ remediation techniques.

The contaminated soil is located four

or fi ve meters beneath the surface of

the property, and contamination was

also discovered in the near-by water

layer. Two sources of contamination

were identifi ed. The primary source

were by-products of coal processing,

which were held in underground tanks,

and a second source came from the

vicinity of the water layers.

Bauer Umwelt employed new in-situ

techniques for this remediation. In-situ

chemical oxidation (ISCO) is a pro-

cess, which uses an oxidation techno-

logy for treating soil or ground water,

to reduce the concentration of harmful

substances to an acceptable level.

In the ISCO technique, strong chemi-

cal oxidants are injected into the con-

taminated soil, in order to destroy

chemical pollutants.

Another technique is EB (enhanced

bioremediation). In this case, native or

inoculated micro-organisms (e.g. fungi,

bacteria and other microbes) degrade

the pollutants; the metabolism of the

organic materials found in the soil or

ground water transforms these into

harmless end products.

ENVIRONMENT

12 BEST in fo / 2015

BMU expands its services in Hamburg

Hamburg – Let’s put it like this: BMU

Hamburg has been fi shing in new wa-

ters – with success! Bauer Umwelt has

two success stories to tell on the banks

of the Elbe, with its container service

and ‘Bauer Bag’.

“Get it at OBI” – Lars Freytag must have

been thinking of this old advertising slo-

gan, when he came to consider where

he could offer his ‘Bauer Bags’ for sale.

The idea is impressively simple: The

customer pays for a Bauer Bag, the

“one cubic meter big bag”, including the

cost of disposal, at one of his local hard-

ware stores in Hamburg, for example at

OBI, fi lls it, leaves it for collection, and

calls BMU – and they look after the rest.

Alongside the smallest transport unit,

the large container business is also

booming. Whether roller containers or

skip containers, whatever the size –

BMU delivers quickly and reliably. “In

addition to our direct container custom-

ers, we have also convinced many con-

tainer service companies to bring their

waste straight to us,” explains Lars

Freytag. “It is above all from Hamburg’s

hinterland that we’ve managed to gain

new partners, who send us tar paper or

artifi cial mineral fi ber”.

The man who is chiefl y responsible for

the success of the construction waste

segment points out further positive

effects:

“Of course we have clear synergy effects

here with our other activities. Many of

our customers in the container sector

and many of the disposal companies

who deliver construction waste to us

also have other types of waste, which

we can dispose of in our plant or

through our network”.

Container companies frequently also

call on the help of BMU to dispose of

industrial waste which requires appro-

priate and secure disposal routes, for

instance, blasting materials or industrial

sludges. “A fair number of customers,

including earthwork and demolition

companies, also have need for a con-

tainer-based construction waste solu-

tion and for our soil and rubble disposal

for larger volumes,” continues Lars

Freytag. “Thanks to our experience, we

can also support smaller companies, for

whom the handling of hazardous or

contaminated waste is not routine work,

with our words and deeds, and thereby

save some of them from the odd legal

stumbling block,” adds Helmut Schallen-

berg, Head of the Soil Treatment and

Recycling Center in Hamburg.

Construction waste, soil, and industrial

waste – the northernmost BMU region

offers every customer an all-round care-

free package.

Schrobenhausen – Dispose of 104,415

metric tons of waste in less than 32

weeks – quickly, sustainably, and eco-

nomically. This was the challenge faced

by BMU Disposal when it handled Ba-

varia’s largest soil disposal project of last

year. The Maxhütte project in Sulzbach-

Top logistics performance

Rosenberg in the Upper-Palatinate

placed considerable demands on the

team from Disposal South Germany.

They had to put in a few extra shifts;

after all, once work on the building site

was fi nished the legally required docu-

mentation of the disposal procedures

had to be ensured. The customer was

very pleased with the precise and reliable

work they performed. “In the end there

was high praise for the team’s perfor-

mance,” beamed Project Manager Uwe

Dinter regarding the successful project.

ENVIRONMENT

13BEST in fo / 2015

“Sometimes we still get soil ...”

The soil treatment and recycling center is in transition

Bleicherode – “Sometimes we still get

soil,” grins Torsten Meißner. In the last

two years, the head of Disposal Central

Germany managed to implement a

complete reorganization of his core

business area in the Bleicherode plant.

Disposal Central Germany offers dis-

posal services in the territory including

Thuringia, Hesse, Saxony-Anhalt, and

South-Lower-Saxony. The plant in Blei-

cherode in Thuringia is the center of the

region; there are other plants in Schro-

benhausen, Hamburg, and Hirschfeld in

Saxony. As a response to the dwindling

volumes of soil and rubble from

Thuringia, Torsten Meißner converted

his plant into one of the leading biologi-

cal treatment centers for industrial slud-

ges with organic contamination. He ex-

plains: “Mostly we get sludges from CP

plants – that is, from the chemical-

physical treatment of fl uid wastes –, but

other materials are welcome too.”

Apart from the biological treatment of

soil and such industrial sludge, Meißner

has also made the preparation of mate-

rials for transport underground into the

plant’s third main pillar. BMU offers this

service to all the underground depots

and reutilization sites in the Harz and

the Region, as well as to those custom-

ers who like to take the complete ‘pack-

aging and disposal’ service. “Due to our

decades of experience with contaminated

benefi t to other customer groups too.”

Other soil treatment and recycling cen-

ters are also dealing with more and

more industrial materials. Whether it’s

sites, we are capable of handling almost

every contaminated material expertly

and safely, no matter if it’s coming from

site recycling or from an industrial

source”, Manuel Sakowski, head of the

disposal business segment at BMU, ex-

plains the background of the idea. “So

we are of course delighted when our

experience and our expertise can be of

phenol-containing molding sand, sludge,

blasting material, fi lter residues, ashes,

or slag – they usually fi nd a solution for

these materials in Hirschfeld, Schroben-

hausen, Bleicherode and Hamburg. And

if not in their own plant, then somewhere

in BMU’s elaborate network of partners.

So no more soil then? “Yes of course!

We are still treating contaminated soil in

our plant. Thuringia and Hesse are still

our main catchment area in this regard.

At present Kassel market is developing

very nicely,” enthuses Torsten Meißner

about his diversifi ed business.

ENVIRONMENT

14 BEST in fo / 2015

A recreational park for KierspeNew river bed for the Volme River

Kierspe – As part of the construction of

the new Volme recreational park BAUER

Umwelt GmbH was commissioned by

the city of Kierspe in North Rhine-West-

phalia to carry out the preparatory work,

including demolition measures and soil

treatment. Ground water contamination

was eliminated by means of demolition

and remediation at the former industrial

location.

Thanks to the clean up of this brown-

fi eld, an inner city area is now available

for the recreational park – a project of

trans-regional importance, which helps

to enhance the Volme valley. The Volme

was relocated to the center of this area

for aesthetic reasons.

From the accompanying engineering

fi rms, Mull & Partner from Hagen was

responsible for the demolition of existing

buildings, for cleaning up hazardous

substances, for the remediation of soil

and ground water and material fl ow

management. The tasks for IRP offi ce

from Hagen involved back fi lling in the

old Volme, and constructing the new

Volme along with the necessary bridge

foundations and canalization.

The demolition of several buildings,

including clearing core removal, and

cleanup of pollutants affected around

23,000 cubic meters of built environ-

ment. For an excavation pit, including

soil treatment and ground water purifi -

cation, roughly 7,700 cubic meters had

to be removed. The main contamination

consisted of lightly volatile halogenated

hydrocarbons. The analysis values were

between 1 and 100 mg/kg. There was

also evidence of PAH and fl uoride con-

tamination.

Once the construction pit was approved

by the engineers Mull & Partner, founda-

tions for the pedestrian bridges over the

new Volme were constructed. Then a

plastic membrane was laid in the con-

struction pit and connected to the bridge

foundations. For the new river bed of the

Volme it was necessary to excavate

2,000 cubic meters of earth, which was

transferred to the old Volme bed and the

landscape structures. Moreover, several

channel interfaces of various diameters

were constructed.

Schrobenhausen – Dr. Frank Tidden,

Head of Sales and member of the

board of management at BMU, has

been elected to the advisory board of

the Cluster of Environmental Technol-

ogy Bavaria. The Cluster of Environ-

mental Technology Bavaria is a net-

work of Bavarian environmental in-

dustry, scientifi c institutions, local au-

Dr. Frank Tidden joins advisory board

thorities, and businesses. The adviso-

ry board supports and advises the

board of management and the cluster

spokesperson in all strategic matters.

At present the interdisciplinary adviso-

ry board is composed of 14 represen-

tatives from industry, science, politics,

and government.

No import of earth from the outside was

foreseen by the tender. About 4,000

cubic meters of material from the con-

struction pit and from the new Volme

bed were to be used for the landscape

structures. The material was not suit-

able for use however. Which is why a

soil improvement had to be carried out.

ENVIRONMENT

15BEST in fo / 2015

Däniken/Switzerland – The Swiss earth-

quake services register on average two

small earthquakes per day in Switzerland

and in neighboring countries, there are

between 500 and 800 earthquakes per

year. Roughly ten of these are strong

enough (magnitude 2.5 or greater) to be

perceived by people. In comparison with

other European countries, Switzerland

has an average risk of earthquakes, and

one can expect a magnitude 6 earth-

quake about once every 60 to 100 years

on average. The last earthquake of this

strength was recorded at Sierre in Wallis

in the year 1946. A tremor like this pre-

sents a particular risk to nuclear power

plants.

To ensure a fast reaction in case of

emergency, highly sensitive seismic

measuring instruments are inserted deep

in the ground. In April 2015 two of these

instruments started recording data at the

nuclear power plant Däniken-Gösgen in

the canton of Solothurn. The necessary

boreholes were constructed in the au-

tumn of 2014 by Bauer’s Swiss subsi-

diary FORALITH Drilling Support AG at

the request of Swissnuclear. It was a

question of two boreholes using the di-

rect circulation rotary-drilling technique,

which were sunk directly beside the nu-

clear power plant.

Drilling for earthquake protectionResources subsidiary prepares for the installation of sensors

NATURAL RESOURCES

Foralith employed its own AGBO G-750

drilling rig, which reached the planned fi -

nal depth of the boreholes (830 meters

and 390 meters) without problem using

a maximum hook load of 40 metric tons.

The seismic measuring instruments were

then lowered down through the subse-

quently installed GRP pipes provided by

GWE. In future these instruments will

register even the tiniest tremors in the

area around nuclear plant.

16 BEST in fo / 2015

Vienna – Ground water is often the only

reliable source of drinking water. To main-

tain and protect this reservoir is one of

the most important tasks of water

management. According to the Federal

Institute for Geosciences and Natural

Resources (BGR), ground water is almost

the only source of the public water sup-

ply in many countries, including Austria.

In an industrial estate in the North East

of Austria, a layer of light non-aqueous

phase liquid, several decimeters thick,

was caused by the uncontrolled leakage

of ligroin (light gasoline). The sum of ex-

pertise and technology now required for

the removal of this light non-aqueous

phase liquid are being supplied by se-

veral subsidiaries of BAUER Resources

GmbH: Bauer Umwelt as the main con-

tractor, together with Bauer Water and

Esau & Hueber, is delivering the appro-

priate process and plant technology; well

engineering products are provided by

GWE pumpenboese.

Four remediation wells – approximately

35 meters deep, using 500 mm stainless

steel wire wrapped screens from GWE –

are being used to remove light non-

aqueous phase liquid as well as water,

which is used to generate a depression

cone. The water is cleaned via an active

carbon plant and drained off. The light

non-aqueous phase liquid, which is

pumped through stainless steel pipes

using pneumatically driven pumps, is

transfered into collection tanks where it

is ready for further processing.

Since there is a danger that an explosive

atmosphere may form due to the highly

volatile light non-aqueous phase liquid,

extremely high standards of explosion

protection and lightning protection have

to be observed. Work on the wells is

done under continuous monitoring with

measurements and the addition of car-

bon dioxide gas in the borehole. The

components for the plant, as well as for

the sensors and controls, are adapted

to the stringent explosion and fi re safety

standards. The employees on site are

given regular training to keep them

aware of this important subject.

Ground water remediation under “explosive” conditions

WATER

Comprehensive safety monitoring and

support by the client are also an integral

part of the measures in place during the

work.

17BEST in fo / 2015

Munich – The traditional Paulaner brew-

ery has been brewing its world famous

and well-loved beer at the historic loca-

tion of Nockerberg since 1634. How-

ever the location has reached the limit

of its capacity. To meet the requirements

of the future, Paulaner is building a new

brewery in Langwied in Munich. The

new construction requires fi ve tertiary

wells for the extraction of brewing water

and is thereby designed for an annual

production of 3.5 million hectoliters of

Paulaner Bier. For constructing the

wells, the company has opted for top

quality well engineering materials from

Fresh brewing water for Paulaner Beer

GWE. For the wells, which have been

drilled to a depth of 200 m in May

2014, GWE provided not only the

stainless steel pipes and the joining

technology, but also the stainless

steel wire wrapped screens DN-400

– the premium product in fi lter tech-

nology – to ensure an optimum fi lter

performance and service life for the

well. Moreover, GWE also delivered

all the stainless steel riser pipes

DN-200 for conducting water from

the pump to the brewery house.

Stainless steel wire wrapped screen from GWE

The premium product: Maximum filter performance in market-oriented designs up to DN 1000

The stainless steel wire wrapped screen

is the premium product for well con-

struction in both the national and the in-

ternational market. GWE produces this

fi lter in their plant in Nordhausen, draw-

ing on their expertise and their wealth of

experience in production, technology,

and application. With the highest manu-

facturing precision and accuracy, it is

possible to realize slot widths as small as

0.1 mm. This results in up to 50 % open

entry area with corresponding slot

widths for the greatest possible fi lter per-

formance. GWE’s customers have been

relying on this high product quality for

years now, and individually tailored solu-

tions are frequently requested and

successfully implemented. Thanks to

their broad network of customer con-

tacts, the GWE recognizes develop-

ments in the market at an early stage.

WATER

It is now producing the stainless steel wire wrapped screen up to

a nominal width of DN-1000, so as to position itself as market

leader for challenging large projects.

18 BEST in fo / 2015

Refi nement of beers in the cold room

Esau & Hueber presents Hop-X-Tract

Schrobenhausen – How is it possible to

improve the refi nement of beers in the

cold room? Esau & Hueber presented the

Hop-X-Tract technique at the trade fair in

Portland/Oregon.

Nowadays it is becoming ever more com-

mon for beers to be refi ned in the cold

room. This is primarily achieved through

the use of hops, which is hung in the stor-

age tanks, something like a large teabag.

This allows the beer to absorb fi ne (bitter)

hop aromas. It is possible that in future

other refi nement agents will be used, such

as oak chips or even fl owers. This so-

called dry hopping technique is already

more the rule than the exception in the

American craft beer sector, and is winning

more and more converts in Germany too.

The procedure still employed in many

breweries is quite laborious and demands

some rather adventurous maneuvers – like

climbing on tanks with shaky ladders, put-

ting oxygen into the beer, etc. To simplify

these often cumbersome processes, Esau

& Hueber presented their own in-house

development, Hop-X-Tract, at the CBC

in Portland, the Craft Beer Conference.

This innovation was a real crowd magnet

and the trade fair team returned from the

USA with many requests and contacts.

The basic principle in a nutshell: Follow-

ing sterilization with hot water or steam,

the Hop-X-Tract is fi lled from above with

the material to be extracted. It lies on a

slotted sieve fl oor and is covered by an-

other sieve plate on top. Then the Hop-

X-Tract is closed fast with the lid. The

fi lled Hop-X-Tract is then fl ushed with

CO² via a CO

² port, to push out the ex-

isting oxygen and so prevent an oxida-

tion of the beer.

The technique, which works like a fl uid-

ized bed reactor, avoids blockages at the

sieves and ensures a homogeneous ex-

traction with a measurably higher yield of

the required substances in comparison

to conventional techniques. The Hop-X-

Tract is connected to the tank and ex-

traction can begin. The beer is then cir-

culated through the Hop-X-Tract from

the bottom to the top.

The equipment is also easy to clean.

The smaller versions of the Hop-X-Tract

can be tipped over to enable fast and

simple cleaning of the equipment.

The larger versions have a small hatch

above the lower sieve for emptying the

machine. All construction sizes have a

spray ball in the lid for subsequent clean-

ing. All equipment from Esau & Hueber

complies with the guidelines for “hygienic

design” in the brewing and beverage in-

dustry.

Portland/Oregon – The Craft Brew-

ers Conference CBC is an estab-

lished trade fair for beer brewers in

the USA and takes place alternately

at different locations. In spring 2015

the brewers met in Portland in the

state of Oregon. Among the 600 ex-

hibitors the brewery specialists from

Bauer Resources, Esau & Hueber,

presented their expertise and their

technology to the over 11,000 visi-

tors from 57 countries. Along with

some employees of Esau & Hueber

partner Gusmer Enterprises, Inc.

there was also a delegation consis-

ting of Günther Marzog, Peter Amler,

Hans Nerb, Sebastian Kappler, and

Edward Ros at the exhibition stand.

The high-tech brewery products ex-

hibited included a MicroProp as well

as the Hop-X-Tract. In the fi nal ana-

lysis, as a result of the trade fair

Esau & Hueber have received

numerous queries from a total 13

countries and 22 US states. In the

preparation of the event, our partner

Gusmer was advertising the exhibi-

tion with the words “Come & Meet

the Beer Guru Hans Nerb!” The next

CBC will be held from May 3 to

May 6, 2016 in Philadelphia.

At the trade fair with the beer guru

WATER

Düsseldorf – The brewery “im Füchschen”

is one of many local breweries, and their

main product is traditional beer for their

own restaurants and houses in the region.

The constricted situation in the historic

center of Düsseldorf inevitably led to the

question “stay or go”. For image reasons,

it was decided to remain in the traditional

location, to modernize and to expand.

Esau & Hueber, a company in the Bauer

Resources Group and a specialist in

brewery technology, developed an inte-

grated energy saving plan as part of the

modernization project and carried out the

technical implementation. When con-

sidering each measure and investment,

attention was given to ensuring a future

ecological and resource-saving produc-

tion process. This objective was not easy

to achieve in the brewhouse – as one of

the most energy intensive processes in a

brewery –, because here the various pro-

cess steps are closely interlocked. To be

able to implement an optimum energy

plan, it was decided to reinstall the main

brewing vessels including the mashing

pan and the lauter tun. One way to save

energy in a brewery is to use less primary

energy for the processes, especially for

boiling process, through process altera-

tions. Another way is to win energy back

from these processes, save it, and use it

again in the subsequent production steps.

These goals were achieved in the “Füchs-

chen” in the form of an energy storage

unit. This was fed with heat from the va-

por condensation of the wort boiling

process. The heat is stored and used

for the immediately following brew to

heat the mash and the lautering wort.

This complex process is controlled by

a new process control system.

Particular savings targets included a

heat energy of 933 MWh/a, water con-

sumption 2,330 m³/a, malt input 5,750

kg/a, and CO² output 224 t/a. The con-

sequence is a competitive advantage

based on the energy savings and the

resulting cost reductions.

The energy savings in the brewhouse

are specifi ed in BVT´s as 23.33 - 31.39

kWh/hl. The implementation of all mea-

sures will enable an input of heat energy

of less than 12 kWh/hl. It is thereby

possible to achieve results which lie be-

neath the values for large breweries

(13.89 - 22.22 kWh/hl). This investment

makes long-term sense for a brewery

the size of “Füchschen”, also consider-

ing the probability of rising energy prices.

The main renovation measures con-

cerned the dismantling of the old wort

pan and the installation of a new one

with an external mash heater, replace-

ment of the lauter tun with more mod-

ern technology, installation of a kettle

vapor condenser system with a con-

densation cooler for energy retrieval

from the condensation vapor during

boiling, installation of the energy stor-

age unit. In addition there was the

Düsseldorf brewers saving pints of energy in the brewery

Esau & Hueber delivers integrated concept for the brewery “im Füchschen”

brewer grain silo with the associated

brewer grain dispenser; malt intake,

storage, weighing with transport; instal-

lation of a state-of-the-art process con-

trol system WINBREW; connection of

the existing preliminary vessel and the

whirlpool to the new process control

system; related tasks such as CIP

(cleaning-in-place) connection and wort

aeration.

One the greatest challenges was pre-

sented by the very short working time of

only three weeks in order to dismantle

the old components, install and adjust

the new ones, and commission the

system. The task was complicated by

structural adjustments which were

being carried out simultaneously. In this

short period of time all the old brewery

equipment was also connected to the

newly installed process control system.

BEST in fo / 2015 19

20 BEST in fo / 2015

Diffi cult well drilling in Senegal – not everyone

is up to such a task!Bauer Resources works for the water supply

of the capital city, Dakar

WATER

21BEST in fo / 2015

Dakar – For some time now the capital

city of Senegal has been suffering from

problems with the water supply. At the

end of 2014, Bauer Resources was

awarded the contract to drill three holes

for the Dakar city water supply.

The supply networks and the volume of

water provided by existing wells are not

growing at the same rate as the popula-

tion, so that the demand for drinking

water is increasing in this West African

city. The break of a main supply line

placed additional stress on the system

in the summer of 2014. Large parts of

the city were cut off from the water sup-

ply for almost three weeks.

President Macky Sall launched a short-

term program to improve the water sup-

ply, the “Progamme d’Urgence de Sé-

curisation de l’AEP de Dakar”. Several

drilling companies were requested to

submit quotations for the creation of

twelve high-yield wells (>150,000 l/h) in

different regions. The wells should be

drilled at a radius of 80 km to 30 km

from the capital city. The water will be

transferred using pump stations from

here to the city’s water reservoirs.

The geology of these regions is diverse.

The North Littoral area, location of the

three boreholes for which Bauer Re-

sources has been contracted, is mainly

characterized by a heavily fi ssured calci-

ferous sandstone, overlaid by layers of

sand and clay. The heavy fl ow of water –

referred to as “Maastrichtien” – leads to

fi ne sand in these fi ssures. In recent

years, several drilling companies have

made fruitless attempts to drill wells, but

regularly failed due to collapsing holes or

jammed drilling tools. The still visible cas-

ing tubes leftover from previous drilling

attempts are ironically referred to as the

‘graveyard of the boreholes’.

It was not least the demonstrable

experience of Bauer Resources with

challenging drilling projects in Africa that

led to the contract for these three wells

in the geographically most diffi cult area

of Senegal. Bauer Resources was also

awarded the contract because of the

drilling technique – accompanied by a

protective casing pipe – that it offered, a

Canadian system in which Bauer invest-

ed especially for this project. The client

was also impressed by the high-quality

drilling equipment with a PRAKLA-RB40

system and by the modern motor pool.

The boreholes were drilled from 30‘‘ to

12‘‘1/2 with telescoping using the rotary

technique. The special 8” stainless steel

construction with special slot sizes in the

fi lter sections was manufactured and de-

livered by GWE.

One of the highlights while work was

proceeding on the fi rst well was a visit

from the responsible minister and his en-

tire entourage at the construction site.

With a demonstration of effi cient proce-

dures and the operation of modern drill-

ing equipment – while complying with

the highest HSE standards –, Bauer

Resources took the opportunity of

standing out from its competitors and

ensuring that all participants were duly

impressed. During the next few days,

there was a report on local television

about the minister’s mission, and the

drilling work of Bauer Resources was

explicitly mentioned.

Thanks to this contract, Bauer Resources

has secured its reputation as a drilling

company for challenging projects and

the reinforced positive perception of the

company by the Senegalese water au-

thorities. The last drilling operation will

be completed in summer 2015. A follow-

up contract is already being discussed.

The Dakar project represents one more

item on our list of references; this will

surely stand to our benefi t when we bid

for contracts in other countries on the

African continent.

WATER

BEST in fo / 201522

New ideas from Bauer Water for the beverage industry

Schrobenhausen – The worldwide mar-

ket for water technologies in the food &

beverage sector is growing. There is only

a limited number of one-stop companies

supplying a full-range of water technolo-

gy solutions to the multinational food

corporations – the market is regional and

heavily fragmented in terms of the tech-

nology. In other words, system manufac-

turers tend to offer solutions predomi-

nantly for process water treatment or for

waste water treatment.

Bauer Water has the benefi t of providing

all the technologies. In cooperation with

the international Bauer network, they can

carry out projects in almost every region

of the world. The high production quality

of Bauer Water accommodates the

customers’ quality requirements. Bauer

Water is gradually expanding its system

solutions for process water and waste

water treatment.

A good example is the topic of water de-

gassing: This refers to the kind of maxi-

mally oxygen-free water used in many of

the process steps in a brewery:

discharges to the bottling hall, adjusting

the original wort or alcohol content of the

beer after fi ltration, or so-called high

gravity blending. When it comes to

blending or the production beer mixture

drinks the use of degassed water is

completely indispensable in order to

guarantee a high quality product.

The target is usually a residual oxygen

content of less than 50 ppb (parts per

billion) – a value which can itself hardly

even be measured with the best instru-

ments. Following an evaluation of the

common degassing techniques, Bauer

Water offers compact solutions based

on the principle of membrane degassing

and column degassing.

In membrane degassing, the water to be

degassed is passed through a bundle of

special hollow fi ber membranes. These

permit the transfer of oxygen on the one

hand and also prevents the transfer of

water to the other side of the membrane.

CO² fl ows on applying a vacuum, which

leads to the formation of a high concen-

tration gradient for oxygen in water

towards the stripping gas side. This con-

centration gradient is simultaneously the

driving force for the transfer of oxygen to

the stripping gas. With appropriate di-

mensioning, it is possible to achieve very

low residual concentrations of less than

50 ppb oxygen in the water.

In column degassing, the water fl ows

through a packed column with a large

specifi c surface area. The stripping gas

(CO²) is passed in the counter-current di-

rection, and as a result of the concentra-

tion difference oxygen is transferred from

the water to the stripping gas.

Membrane or column degassing may

be selected depending on the intended

application and the local conditions.

For both methods there are compact,

high-quality stainless steel designs,

which are mounted on stainless steel

frames. The technology is equipped with

a stainless steel control cabinet with

touch panel and a choice of data trans-

fer interfaces. Further benefi ts include

simple cleaning and disinfection facilities

for the highest hygiene and product re-

quirements, and last but not least the

quality control with sensitive oxygen

measurement.

The equipment is designed according

to the “plug & play” principle, and can

process volume fl ows of between 1 and

20 m³/h. Larger units are individually de-

signed in keeping with the motto “made

to measure water treatment”.

WATER

BEST in fo / 2015

Schrobenhausen – Road surface mater-

ial, and particularly tar-containing mater-

ial, has proven more and more of a

problem whenever roads are renewed.

A declining number of collection points

permit reutilization or at least legally

compliant and environmentally sustain-

able disposal of the material. All the

more crucial was the approval of BMU’s

new temporary asphalt storage facility

in Schrobenhausen. “Temporary storage

of the material here enables us to accept

New in Schrobenhausen: a temporary storage facility for asphalt

material from small or large road re-

construction jobs and to transfer

these quantities to an economically

and ecologically reasonable utilization

for our customers,” explains Harald

Stock, Head of the Soil Treatment and

Recycling Center in Schrobenhausen.

Also in other regions of Germany and

Austria, BMU offers its customers ex-

pert solutions for old road material

and other types of mineral waste.

23

IMPRINT

BESTinfo – The magazine for customers and partners of BAUER Resources GmbH.

Issue 2015 is the current No. 7.

Responsible: Johann Mesch – Editors: Ingrid Hasenöhrl, Valerie Kwast, Franz J. Mayer

Photo: Kai Arndt/photo design, Günther/photo design, BAUER AG/K. Rysavy, Patrick Scharf Skyfl y-pix, Roche Pharma

AG, Thinkstock, Archive Bauer Resources

BAUER Resources GmbH, BAUER-Strasse 1, 86529 Schrobenhausen, Germany

About the image on the back page. In Schonungen, in the district of Schweinfurt, for decades highly toxic chemicals

escaped from an industrial production site and seeped into the soil. Later, residential housing was built over the site.

With painstaking measures, including soil replacement, BMU remediated the site.

www.bauer.de

http://www.bauer.de/en/bre/

INHOUSE

Schrobenhausen – Last year, to accom-

modate for the increasing volume of or-

ders, Bauer Resources started a signifi -

cant expansion of its production capa-

city at the Schrobenhausen location.

Primarily for the growing export quota of

the subsidiaries Bauer Water and Esau

& Hueber, modular systems are as far

possible prefabricated and tested in

Schrobenhausen.

The new, altogether 3,400 cubic meter

production space in Königslachener

Weg is fi tted with all the necessary

equipment for welding, machining, pick-

ling, grinding and polishing, whether for

stainless steel, steel or plastic. The

newly built production hall was inaugu-

rated in March 2015 and the fi rst

New workshop for BWS and Esau & Hueber

assembly was carried out, along with a

so-called factory acceptance test for an

export project to Mexico.

The space is divided into three seg-

ments: Stainless steel of almost any

quality can be processed in the stain-

less steel workshop. TIG manual or au-

tomatic welding are employed depend-

ing on the application. The weld quality

is documented on the basis of stan-

dardized procedures and templates,

and specifi c customer requirements can

also be taken into consideration. Plas-

tics of various qualities can be pro-

cessed in the plastics workshop. The

processing techniques employed here

include bonding, hot drawing welding,

torch and extrusion welding, heated

element butt welding, socket welding,

infrared and BCF welding. Racks and

supporting structures are manufactured

in the steel workshop.

24 BEST in fo / 2015

www.bauer.de