issue 59 newsletter dec 2018 nz land treatment collective ...western cape from 2010/11 until...
TRANSCRIPT
NZ Land Treatment Col lect ive
NEWSLETTER
Dedicated to improving and communicating technology for the land treatment of waste products
Inside this issue:
Update from NZLTC Chair
and Technical Manager
1
NZ Annual Membership
NZLTC Strategy Refresh
2
NZLTC 2019 Conference 3
NZLTC 2019 Conference
4
International Land
Treatment News
5
NZLTC Resources - North-
west Biosolids
6
Kai ora koutou katoa,
With Christmas approaching the NZ Land Treatment Collective wishes you all a happy
and restful break with family and friends. The new year brings some exciting NZLTC
events and land treatment resources which include:
INVERCARGILL 3 - 5th April 2019
The NZLTC annual conference will begin in Queenstown with the fieldtrip on the 3rd April
visiting land treatment sites on our way to Invercargill. We are pleased to confirm that M.
bovis expert Roger Ayling from the UK will be our international keynote speaker alongside
a NZ agricultural sector keynote and technical papers which will be presented on the 4th
and 5th April at the Ascot Park Hotel in Invercargill. Please see pages 3 and 4 for more
details. Register here:
https://nzltc2019.lilregie.com
NZLTC STRATEGY REFRESH
The NZLTC Technical Committee are working hard to achieve the objectives set out in the
NZLTC Strategy. This has enabled us as a team to work together on the issues and
resources that will be of most benefit to the NZLTC membership. See page 2 for more
details.
NZLTC WEBSITE REDEVELOPMENT
The NZLTC website is in the process of being redeveloped with the following objectives:
Simple and clear layout and design
Easy access to land treatment information and resources
If you have any questions please do not hesitate to get in touch with us.
Ngā mihi nui
Grant Northcott (NZLTC Chair) and Bronwyn Humphries (NZLTC Technical Manager)
Update from the NZLTC Chair and Technical Manager
I ssue 59
Newsletter Dec 2018
https://nzltc.wordpress.com/
1
2
NZLTC Strategy Refresh 2018
The strategy refresh shows our commitment to implement the NZLTC strategy which was developed in 2009. The five
objectives are listed below alongside the NZLTC Technical Committee member who has taken responsibility for
championing each objective. In the coming newsletters each objective will be discussed by the relevant NZLTC Technical
Committee member outlining key areas of focus for the coming year.
Objective 3: Enhancing stakeholder relationships (Noel Roberts)
NZLTC in the coming year will focus on:
Keeping our membership regularly informed of relevant land treatment events, reviews, policies and plan changes
via our website and quarterly newsletters.
Connecting and engaging with key stakeholders involved in land treatment
Please get in contact with one of the NZLTC Technical Committee members to share your ideas or to contribute to
implementing NZLTC’s strategy.
1) Representation and advocacy
Sue Bennett (Stantec) [email protected]
2) Member engagement and growth
Grant Northcott (Northcott Research Consultants Ltd
3) Enhancing stakeholder relationships
Noel Roberts (Water NZ) [email protected]
4) Professional development and training
Terry Long (Bay of Plenty Regional Council)
5) Support development of
research for sustainable waste
Gerty Gielen (Scion)
Rebecca Stott (NIWA)
NZLTC Annual Membership
NZLTC annual memberships have just been renewed so welcome back to all returning and new members. Membership of
the NZLTC is designed to communicate the latest in research and findings in land treatment technology.
Each year the Collective holds a conference and field tour based on a particular theme to provide members and
conference delegates with the opportunity to meet and discuss research, engineering, legal, community and practical
issues related to land treatment of waste products. These conferences provide a unique and relaxed environment where
researchers, consultants and government organisations can freely mix, sharing ideas, developing contacts and providing
future directions for land treatment of waste products in New Zealand.
The Collective is managed by the Technical Committee comprising a group of six elected representatives – made up of 3
collaborator members and 3 financial members. The annual levy is $750 and benefits include:
Conference registration fees at cost
Exclusive access to the annual NZLTC Technical Review Exclusive access to historical archived NZLTC Technical Reviews Direct access to Collaborative Members (CRIs) for advice and enquires on land treatment issues Exclusive access to any Collective funded research for 12 months following presentation to the Collective.
If you are interested in becoming a member contact the NZLTC Technical Manager, Bronwyn Humphries: [email protected]
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WEDNESDAY 3 APRIL
Fieldtrip (Queenstown to Invercargill)
Delegates will be asked to travel to
Queenstown airport by 10:30am on
Wednesday 3rd April from which the fieldtrip
will travel to these locations:
Queenstown: municipal wastewater
discharge to land
Garston: meatworks waste discharge
to land
Edendale: dairy factory waste
discharge to land
Lunch and tea breaks will be provided along
with in-bus commentary and entertainment.
Since the bus will be sourced from
Invercargill, delegates do have the option of
travelling to Invercargill on Tuesday 2nd April
and catching the bus up to Queenstown
early on Wednesday 3rd April to meet the
rest of the conference delegates for the
fieldtrip.
At the end of the day delegates will arrive at
the Ascot Park Hotel in Invercargill and enjoy
a celebration of 30 years since the
formation of NZLTC with an 80’s inspired
event including music, beer tasting and local
food.
THURSDAY 4 APRIL
Ascot Park Hotel
Delegates will be welcomed to the
conference by local iwi followed by
presentations from our keynote speakers
and local representatives.
Keynote speakers:
International Speaker (Roger
Ayling) on Mycoplasma bovis:
Implications for NZ agriculture and
land treatment
NZ dairy sector speaker
Conference presentations
Lunch and tea breaks will be provided.
5pm: NZLTC AGM
6pm onwards: NZLTC Conference Dinner
at the Bill Richardson Transport World
Includes a 1 hour self directed tour of the
Transport Museum (6—7pm)
FRIDAY 5 April
Ascot Park Hotel
Conference presentations
Lunch and tea breaks will be provided.
3pm: Delegates start departing for
Invercargill airport
New Zealand Land Treatment Collective
CONFERENCE 3-5 April 2019, Invercargill
P R I M A R Y P R O D U C T I O N A N D L A N D T R E A T M E N T
Sponsors
ASCOT PARK HOTEL
ACCOMODATION OPTIONS
Superior room $160
Deluxe room $180
Apartment $180 (x1 queen, x1
single plus the option of a sofa
bed in the lounge for an addition-
al $25 per night)
(cheaper motel rooms are also available)
For bookings please contact 03 219
9076 or [email protected]
IMPORTANT DATES
Registrations open now
Call for abstracts open now
Abstract submissions close: 1 Feb 2019
Authors advised: 15 Feb 2019
Early bird registrations close: 28 Feb
2019
Full papers due: 15th Mar 2019
SPONSORSHIP PROSPECTUS
For information on sponsorship options
during the NZLTC conference please see
our prospectus on the NZLTC website
https://nzltc.wordpress.com/events/
nzltc-annual-conference/
REGISTRATION
Early bird registration:
member $525, non-member $850
Register here:
https://nzltc2019.lilregie.com
4
Planning for the NZLTC Conference
Register https://nzltc2019.lilregie.com early bird registrations close on the 28th Feb 2019
Book your accommodation: contact Ascot Park Hotel 03 219 9076 or [email protected] or check out some of the other local
accommodation options https://southlandnz.com/invercargill/accommodation
Submit an abstract (closes 1st Feb 2018) https://nzltc.wordpress.com/events/nzltc-annual-conference/
Apply for one of the student scholarships available, email [email protected]
Book your flights early, see our website for possible flight options https://nzltc.files.wordpress.com/2018/12/NZLTC-2019-
Conference-flight-options.pdf
Become a conference sponsor https://nzltc.files.wordpress.com/2018/10/nzltc-2019-conference-sponsorship-
opportunities1.pdf
2019 Keynote Speakers
Roger Ayling (UK)
Roger is a member of the NZ MPI Mycoplasma bovis Strategic Science Advisory Group (SSAG) which provides independent,
expert scientific advice to the Mycoplasma bovis Governance Group. Drawing on a wide range of expertise, the group is also developing
a science plan to prioritise eradication research and guide funding decisions such as focusing on:
prioritising M. bovis eradication research
finding and addressing any gaps in our knowledge – including looking into new technologies and ideas to get rid
of M. bovis
ensuring alignment of current and future science
learning from other research in New Zealand and internationally.
Roger will present on managing disease outbreaks and the implications for land treatment by:
Addressing the risk of disease transmission by outlining the mechanisms which determine the fate and transport of a disease
Using examples such as the UK experience with M. bovis and other disease causing organisms
The purpose of Roger’s keynote address will be to adequately brief the NZLTC conference delegates and its members on the
implications for disease transmission when dealing with the treatment of waste to land.
Speaker to be confirmed - NZ keynote on the application of agricultural waste to land
New Zealand Land Treatment Collective
CONFERENCE 3-5 April 2019, Invercargill
P R I M A R Y P R O D U C T I O N A N D L A N D T R E A T M E N T
Current sponsors
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International Land Treatment News
OSET
Wine production is an important industry in the Western and the
Northern Cape regions of South Africa. Wineries produce large
volumes of poor quality wastewater, particularly during harvest
(Fig. 1). The possible re-use of this wastewater for vineyard
irrigation was investigated in a field trial. In this regard, a
multidisciplinary research project to investigate the impact of
diluted winery wastewater on soils, crop growth and product quality
was initiated and funded by the Water Research Commission of
South Africa. The project was also co-funded by Winetech and the
Agricultural Research Council. The field trial was carried out in a
commercial Cabernet Sauvignon/99 Richter vineyard near
Rawsonville in the Breede River grape growing region of the
Western Cape from 2010/11 until 2012/13. Irrigation with winery
wastewater diluted to 100, 250, 500, 1000, 1500, 2000, 2500
and 3000 mg/L chemical oxygen demand (COD) with river water
was compared to irrigation with river water. Dilutions were carried
out individually for each concentration in 15 m3 tanks at the
vineyard (Fig. 2). Grapevines were generally irrigated at ca. 50%
plant available water depletion, and irrigation was terminated
either in mid-April or the beginning of May, when the wastewater
volumes decreased and/or the first winter rains began. Irrigation
was applied by means of micro-sprinklers in order to apply larger
volumes of water than what the case would have been with drip
irrigation. Water meters were used to monitor the irrigation
volumes applied to each treatment. Grapevines of all treatments,
including those of the control, received the same volume of water
per irrigation. Each treatment was replicated three times in a
randomized block design.
Re-using diluted winery wastewater for the irrigation of wine grapes Carolyn L. Howell, P.A. Myburgh & E.L. Lategan
Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Stellenbosch, South Africa
wastewater is that it could serve as a possible nutrient source, it is
important to note that the N load in the diluted winery wastewater
was completely inadequate to supply the grapevine’s annual
requirement. On the positive side, P loads in the winery wastewater
diluted to 2500 mg/L COD and higher could supply more than
adequate P if the grape yield amounts to 10 t/ha. Likewise,
dilution of winery wastewater to 250 mg/L COD and higher could
supply more than adequate K if grape yield amounts to 10 t/ha.
However, the excessive K applied via the diluted wastewater could
increase juice pH that could cause unstable musts and wines, as
well as a reduction in the degree of ionisation of anthocyanins in
the wine. Furthermore, excessive K application could induce
nutrient imbalances in the grapevine tissues, particularly
antagonisms with respect to N, Ca and Mg. Given that the amounts
of K applied via the diluted winery wastewater were considerably
higher than the grapevine’s requirements, the cultivation and
removal of a suitable interception crop during summer might be
useful to absorb excessive K.
Figure 2: The 15 m3 tanks at the vineyard where the dilutions of the winery
wastewater were carried out individually for each concentration.
Diluted winery wastewater increased soil K and Na after
wastewater application. Although irrigation using diluted winery
wastewater had almost no other effects, element accumulation
particularly with respect to K and Na, might be more prominent in
soils with higher clay contents or in regions with low winter
rainfall .Irrigation of grapevines using diluted winery wastewater
did not affect grapevine water status, vegetative growth,
production, juice characteristics or wine sensorial characteristics.
The grapevines did not respond to level of COD per se. This
indicated that sufficient aeration occurred between irrigations
which allowed organic carbon breakdown. Although salinity and
sodicity levels in the diluted winery wastewater were below the
thresholds where growth and yield reductions are expected for
grapevines, it should be monitored frequently. The low salinity and
sodicity levels in the diluted winery wastewater could be a further
explanation why the grapevines did not respond negatively to the
wastewater irrigation. It must be noted that vineyard irrigation
using diluted winery wastewater was only investigated under one
given set of conditions. Therefore, at this stage, it can only be
recommended for vineyard irrigation in sandy soils in regions with
high winter rainfall.
For further information please contact: [email protected]
Although the COD concentration in winery wastewater was the
preferred indicator of water quality, it did not provide a reliable
indication of wastewater pH and electrical conductivity (EC).
Furthermore, the COD level could not be used to estimate K and
Na concentrations in the winery wastewater as these levels
differed substantially at a specific COD level. Level of COD also
provided no indication of the salinity or sodicity hazard of the
wastewater. The EC in the undiluted winery wastewater was
strongly determined by the K concentration. This was to be
expected, since K is usually the most abundant cation in winery
wastewater. Since one of the incentives for diluting winery
Figure 1: Wastewater of poor quality generated by the winery.
You can follow NZLTC online via the following platforms: website,
Twitter, LinkedIn and Facebook. Updates will be posted regularly
with links to our newsletter, relevant land treatment research and
news.
https://nzltc.wordpress.com/
6
NZLTC Resources
NZLTC Technical Manager
Bronwyn Humphries
NZLTC Finance and Administration Management
Robyn Chapple
NZLTC Contacts
NZLTC Online Important dates
2018/2019 NZLTC Memberships due
1st Feb abstracts close
Early bird registrations close 28th Feb
2019rations close: 28 Feb 2019
NZLTC conference 3 - 5th April 2019
The NZLTC is now a member of Northwest Biosolids (University of Washington).
Northwest Biosolids provide its members with exclusive access to up-to-date biosolids research and online resources. These
resources are available on the NZLTC members only portal as a mix of abstracts and full papers.
https://nzltc.wordpress.com/members-area/northwest-biosolids-resources/
Their latest December newsletter focuses on the US EPA recently released list of 352 pollutants identified in biosolids.
If you are a member and have forgotten the members only password or would like more information about becoming an
NZLTC member to gain access to these resources please contact the NZLTC Technical Manager
https://nwbiosolids.org/
Title: EPA unable to assess the impact of hundreds of unregulated pollutants in land-applied biosolids on human health
and the environment
Author: Lovingood, T., J. Trynosky, J. Drzewiecki, B. Beeson, and P. Milligan
Source: US EPA Report No. 19-P-0002 November 2018
Title: Mobility of dimethoate residues from spring broccoli field
Author: Antonious, G.F., Z.M. Ray and L. Rivers Jr.
Source: J. Environ. Sci. Health Part B 2007 42:9-1
Title: Detection and occurrence of N-Nitrosamines in archived biosolids from the targeted National Sewage Sludge Sur-
vey of the U.S. Environmental Protection Agency
Author: Venkatesan, A.K., B.F.G. Pycke, and R.U. Halden
Source: Environ. Sci. Tech. 2014 48:5085-5092
Title: Concentrations of 61 trace elements in sewage sludge, farmyard manure, mineral fertiliser, precipitation and in oil
and crops
Author: Eriksson, J.
Source: Swedish Environmental Protection Agency. 2001
http://www.naturvardsverket.se/Documents/publikationer/620-6246-8.pdf
Title: Fate of triclosan and triclocarban in soil columns with and without biosolids surface
application
Author: Kwon, J-W. and K. Xia
Source: Environ. Toxicology Chem. 2011 https://doi.org/10.1002/etc.1703