ceda dredging days 2008 - antwerp steps towards the development of green dredging technology 3...

CEDA Dredging Days 2008 - Antwerp

Steps towards the development of green dredging technology

3 October 2008

Henk van Muijen MTI Holland BV


The way to development of green, sustainable dredging technology

• What is sustainability?

• What does this mean for IHC Merwede?

• How can we develop sustainable dredging technology?


Background

Growing awareness of the effects human activities in the ecosystems,

Increasingly demanding legislation on•Materials and production•Energy use and emissions•Operations (precision, turbidity, lubricants, noise)

IHC Merwede feels responsibility for: • Sustainable design and production of equipment •That allows sustainable dredging


Our understanding of sustainabilityPublic

developments IHC Merwede Sustainability Definition and Understanding

Driving forces

Paradigm Shift and Incremental Steps

Communication

Strategy

Technology

Stakeholder re-definition

New Insights

Principles

Guidelines

Product-Service systems

Re-inventing the waywe invent things

Secondary Processes

Trends, Challenges and Perspectives

Growing awareness

Industrial context

SCR initiatives

Internal

Communication

Strategy

Technology

External

Legislation

Costumer demand

Public developments IHC Merwede Sustainability

Definition and Understanding

Driving forces

Paradigm Shift and Incremental Steps

Communication

Strategy

Technology

Stakeholder re-definition

New Insights

Principles

Guidelines

Product-Service systems

Re-inventing the waywe invent things

Secondary Processes

Trends, Challenges and Perspectives

Growing awareness

Industrial context

SCR initiatives

Internal

Communication

Strategy

Technology

External

Legislation

Costumer demand

Brundtland definiton as basis:

“provide the needs of the present generations without compromising the capability of the future generations to meet their needs”

•Dynamic interaction among all fields

•External and internal driving forces act in a synergic way to create new sustainable business opportunities

•Learning process (not static)

•Essential to include all stakeholders in a participative way


Focus on products, dredging process is the boundary for input/feedback

What it means for IHC Merwede

Define and implement a Sustainability Strategy

Re-thing design, production, maintenance and recycling according to sustainability principles

SCR initiatives, assess secondary processes (office)

Awareness growth within company

Intensive cooperation with all stakeholders

Social

EconomicEnvironment

EquitableBearable

Viable

Sustainable

Social

EconomicEnvironment

EquitableBearable

Viable

Sustainable


How we do: “Sustainability and Dredging”•Long-term research program

•Cooperation with all stakeholders

•Multidisciplinary approach

•Consulting experts (internal and external)

IHC Merwede-wide program

Suppliers

Dredging contractors

Experts

NGOs

Education and Research

Institutions

Government

DefinitionInventarisation

Knowledge developmentCase studies

Sustainable Productsand Processes

External players2008

2009

2011

2010

Eco-Shape: Building with Nature

IHC Merwede-wide program

Suppliers

Dredging contractors

Experts

NGOs

Education and Research

Institutions

Government

DefinitionInventarisation

Knowledge developmentCase studies

Sustainable Productsand Processes

External players2008

2009

2011

2010

Eco-Shape: Building with Nature

Pilot projects / demo-models / prototypesDesign guidelines / decision support tools

•Participation in the EcoShape: Building with Nature program


Many efforts in the direction of sustainability have been already taken. Some examples are:

State-of-the art

High efficiency pumps

Better cutting tools

submerged pumps (high density dredging)

Environmental dredging


Improved hopper sedimentation

Automation and control

State-of-the art


Optimised hull design

State-of-the art

Conventional hull design


Paradigm shift vs incremental steps

Sustainable solutions require fundamental re-thinking, but also incremental steps for the short term solutions.

On the light of sustainability principles and guidelines

“Re-invent the way we invent things”( M.Braungart & W. McDonough, Cradle to Cradle)


Paradigm shiftSeminar held in April, with a variety of participants and varied program


Paradigm shift

directions for increased sustainability:

•Turbidity control•Energy emissions•Sustainable equipment and production

From the seminar the main


Turbidity control

• Control overflow turbidity, according to background levels and ecosystem resilience

• Precise dredging

• Further develop high density dredging

• Understanding and controlling factors that influence re-suspension


Energy and emissions

Dredging process requires high energy density

Combustion of fossile fuels originates emissions (SOx, NOx, CO2, PM, etc…)

IMO regulation soon introduces severe limits on emissions of NOx, SOx, usual fuels (HDF) cannot comply

Future regulation expected to limit CO2, PM, other emissions including noise

Renewable alternatives not sufficiently developed yet


Roadmap to sustainable energy supply and use

21 1I c v dw v

Energy Index I for dredging

Dredging can be optimised for maximum energy efficiency!

1. Increase energy efficiency


ExampleTSHD 4500 m3

Sailing distance 6.75 miles

Dsuction 900 mm

Energy index: I = 0.187

Question: Given an equal capacity, will a smaller suction tube give a lower index or not?

Answer:

Energy index becomes: I = 0.193 at Dsuction = 800 mm

At a distance of 40 miles, a Dsuction of 800 mm is somewhat better



2. Change to more sustainable energy sources

•LNG•Synthetic fuels•Nuclear (risk too high, preferable onshore generation)•Conventional Hybrid systems

Higher efficiency of whole power supply, lower emissions



3. Gradual shift to sustainable energy sources

•Solar•Wind•Bio-fuels•Batteries•Fuel cell combined turbines•Fuel cell hybrid systems

Not sufficient yet for main power supply, but rapid developments occur at the moment


Sustainable equipment and production


Sustainable equipment and production•Life cycle perspective (production-use-disposal)

•Focus on functionality

•Careful material choice that is safe and allows re-use or recycling without losses = up-cycling

•Clean and efficient production processes

•Maintenance to minimise life-cycle costs

•Controlled disposal

•Crew training and awareness building


SustainableDredgingEquipment

Ecology

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SustainableDredgingEquipment

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Future issues

Ballast water

Greenhouse gases

Recycling

Underwater noise

Anti fouling

Could this be the solution?


Conclusions

Dredging process: equipment adaptation

and innovation

Energy issues and emission control

Equipment redesign and production

Ste

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Ecology Ecology

Economy Economy

Society Society

Turbidity control

Precise dredging

High density

Air pollution

Water pollution

Sustainable energy sources

Life cycle support

Maintenance

Sustainable design


Steps towards the development of green dredging technology

ceda dredging days 2008 - antwerp steps towards the development of green dredging technology 3...

Documents

ceda dredging days

sustainable dredging

environmental dredging

antwerp steps

stakeholders slide

art slide

antwerp background

antwerp focus