issue 62 newsletter aug 2019 nz land treatment collective newsletter · 2019-08-27 · this...
TRANSCRIPT
Inside this issue:
Update from NZLTC Chair and
Technical Manager
1
NZLTC 2019 Survey Results and
NZLTC Email Signature
2
NZLTC 2020 Conference
3
On-site Wastewater Management
Systems (OWMS)
4-7
Student Research 8
International Conference Sum-
mary
9
NZLTC Resources - Northwest
Biosolids
10
Water NZ 2019 Conference Bio-
solids Sessions/Workshop
11
NZ Land Treatment Col lect ive
NEWSLETTER
Dedicated to improving and communicating research and technology for the land treatment of waste
Kia ora koutou katoa,
This newsletter is packed full of land treatment articles:
Focus on On-site Wastewater Management Systems (OWMS)
Student research
International conference summary
We are working hard to ensure that we as the NZ land treatment community are well connected
and informed not only about what is happening here in NZ but overseas too. Connections help to
drive science and innovation and the NZLTC are making this our key focus for the year ahead.
C O N N E C T I O N S
NZLTC SURVEY
Our survey results are summarised on page 2 and provide us with some valuable feedback on what
our membership and the wider NZLTC community needs from us as an incorporated society.
NZLTC EMAIL SIGNATURE
We are excited to make available to our members a new email signature graphic. See page 2 for
more details.
NZLTC WEBSITE REFRESH
We have engaged a website designer to give our website a refresh. Our objectives are to ensure
that the website has:
clear and simple layout and design
publications and resources that are easily found for our members and the general public
We hope to launch the new website by late October.
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 62
Newslet ter Aug 2019
https://nzltc.wordpress.com/
1
2
NZLTC 2019 Survey Results
The survey attracted 42 respondents with the aim of engaging the NZLTC membership and the wider land treatment
community in New Zealand.
Survey Participants Areas of
Agricultural
Industrial
Onsite Wastewater
Management Systems
Municipal
Participants Employer
16 Consultant
9 Regional Council
5 District Council
4 Supplier
3 Researcher
3 Other (Central Government, DHB, City Council)
2 Industry
What are the top land treatment issues that you face in your work?
#1 Poor land treatment practices and design issues
#2 Consenting, compliance and monitoring
#3 Impact on the receiving environments from waste applied to land (soils, groundwater and surface water)
#4 Managing nutrients (nitrogen and phosphorus)
#5 Health impacts and pathogen removal
#6 Information on new land treatment technologies
What training/workshops would be of most interest or benefit to you?
#1 Fate and transport of nutrients and pathogens from land treatment systems
#2 How to properly assess a site for the application of waste to land
#3 New land treatment technologies
Website suggestions
#1 RESOURCES (latest treatment technologies, onsite wastewater resources, links to current research)
#2 SHORT land treatment essays/articles/case studies
#3 INPUT from councils
NZLTC newsletter suggestions
#1 NEW land treatment technologies, studies, NZ and overseas
#2 DIFFERENT perspectives (Public health, councils)
#3 Land Treatment specialists PROFILES
NZLTC email signature available - for members only The NZLTC are pleased to make available to our
members a NZLTC email signature graphic. This graphic
can be embedded into your email signature to let your
contacts know that you are a member of the New
Zealand Land Treatment Collective (NZLTC). This is a
great way to promote your association with the NZLTC
and to connect us as a land treatment community.
With special thanks to one of our members (Salma
Rayan - Innoflow) who provided the inspiration for this
initiative.
3
Trade Displays
The NZLTC are inviting exhibitors to purchase a trade
display area. This is an ideal opportunity to showcase
your business and land treatment technologies.
sites are $500 each
10 sites available
Contact Bronwyn Humphries (NZLTC Technical
Manager) to secure your site
Monday 30 March Tuesday 31 March Wednesday 1 April Thursday 2 April
Workshop
On-site Wastewater
Management (OWMS)
Pathogen risks
Soil assessments
Conference - Day 1
International keynote - Mark
Borchardt (USDA)
Local keynote
Delegate presentations
Conference - Day 2
National keynote
Delegate presentations
Fieldtrip
Palmerston North - land
treatment locations
Evening Events
Social function Conference dinner and
awards
Important dates
Registrations open - 2 Sep 2019
Abstracts open - 2 Sep 2019
Abstracts close - 14 Feb 2020
Full papers due - 25 Mar 2020
OWMS Workshop - 30 Mar 2020
NZLTC Conference - 31 Mar - 2 Apr 2020
Sponsorship To view our conference
sponsorship opportunities click here:
International Keynote - USDA
approval pending Mark Borchardt is a
microbiologist who works for the
US Agricultural Department
(USDA) in Wisconsin.
His research includes septic
system wastes and land applied
livestock manure as related to
pathogen contamination of groundwater and human
health risks.
Premier sponsors
Break sponsor
Award sponsor
Northcott Research
Consultants Ltd.
Venue accommodation rates
To view options click here:
Student Scholarship
sponsor
4
Onsite Wastewater Management Systems (OWMS)
P A S T
1991
Resource Management Act (RMA)
The discharge from an on-site system is subject to Section 15 of
the RMA, which is administered by regional councils and
controlled through rules in regional plans.
2002
Local Government Act
Section 125 of the Local Government Act 2002 places a
requirement on local authorities to carry out water and sanitary
services to assess the current state of wastewater treatment
systems in communities not serviced by reticulated wastewater
treatment systems.
2004
On-site Wastewater Systems: Design and Management Manual.
Auckland Regional Council. Technical Publication No. 58 (TP 58)
http://www.aucklandcity.govt.nz/council/documents/
technicalpublications/TP58%20On-site%20wastewater%
20systems%202004%20Chapters%201-8.pdf
Contact: Robyn Floyd (Auckland Council)
2006
Bay of Plenty On-site Effluent Treatment Regional Plan (updated
August 2014) Bay of Plenty Regional Council
https://www.boprc.govt.nz/media/424961/operative-oset-plan-
2006-clear-copy-incorporating-pc2-permanent-version-small-
website-no-maps-pdf-updated-22-04-15.pdf
Contact: Terry Long (BOPRC) [email protected]
2006
Potential impacts of on-site sewage disposal on groundwater.
https://www.hbrc.govt.nz/assets/Document-Library/Publications-
Database/Potential-Impacts-of-On-site-Sewage-Disposal-on-
Groundwater.pdf
Contact: Brent Gilpin (ESR) [email protected]
2008
On-site Effluent Treatment (OSET) testing facility established
The testing programme undertakes performance testing of ex-
factory on-site wastewater treatment units in line with AS/NZS
1546.3: 2008 at its testing facility located within the Rotorua City
Wastewater Treatment Plant site.
https://www.waternz.org.nz/OSET
Contact: Ray Hedgland (Technical Manager) [email protected]
2008
Proposed National Environmental Standard for On-site
Wastewater: Discussion document
https://www.mfe.govt.nz/publications/rma/nes-onsite-
wastewater-systems-discussion-jul08
Please note: the document has since been withdrawn
2010
Guidelines for separation distances based on virus transport
between on-site domestic wastewater systems and wells
https://envirolink.govt.nz/assets/Envirolink/Guidelines-for-
separation-distances-based-on-virus-transport-.pdf
Contact: Murray Close (ESR) [email protected]
2009
Proposed National Environmental Standard for On-site
Wasteawater Systems: Report on submissions
https://www.mfe.govt.nz/sites/default/files/nes-on-site-
wastewater-systems.pdf
Past and present key documents and research
2012 On-site Wastewater Systems: Maintenance Guidelines for
Homeowners
Document was produced by SWANS-SIG, the Small Wastewater
And Natural Systems Special Interest Group of Water New
Zealand.
https://www.waternz.org.nz/documents/sigs/swans/120215%
20_onsite_wastewater_maint%20_booklet.pdf
Contact: Sandy Ormiston [email protected]
2012
AS/NZS 1547:2012 On site domestic wastewater management
This document provides guidance on dwelling occupancy, the
calculation of flows, size of septic tanks and methods of disposal.
It also provides information for owners of systems and those who
service them.
https://www.standards.govt.nz/news/media-
releases/2012/mar/on-site-domestic-wastewater-management-
revised-standard-published/
2013
On-site Wastewater Groundwater Quality Risk, July 2013.
Environment Southland
https://www.es.govt.nz/Document%20Library/Research%
20and%20reports/Groundwater%20reports/on-
site_wastewater_groundwater_quality_risk.pdf
Contact: Ewen Rodway (ES) [email protected]
2015
Groundwater contamination risk, septic tank density and
distribution within Otago August 2015. Otago Regional Council
https://www.orc.govt.nz/media/1654/groundwater-
contamination-risk.pdf
Contact: Sean Leslie (ORC)
2017
AS 1546.3: 2017 “On-site domestic wastewater treatment units
Part 3: Secondary treatment systems” to supersede AS/NZS
1546.3: 2008 “On-site domestic wastewater treatment units part
3: aerated wastewater treatment systems”
2017
Understanding and taking care of your On-site Wastewater
Management System (OWMS) for domestic wastewaters.
November 2017. Water New Zealand.
https://www.waternz.org.nz/Attachment?
Action=Download&Attachment_id=2976
Contact: Noel Roberts (WaterNZ) [email protected]
2019
Choosing an On-site Wastewater Management System, OWMS,
for home owners.
https://www.waternz.org.nz/Attachment?Action=Download&Attac
hment_id=3741
Contact: Andrew Dakers (ecoEng Ltd) [email protected]
2019
Domestic On-site Wastewater: Real needs and relative risks
https://www.waternz.org.nz/Attachment?Action=Download&Attac
hment_id=1350
Contact: Andrew Dakers (ecoEng Ltd) [email protected]
5
Onsite Wastewater Management Systems (OWMS) Key documents and research
Current projects and research
Below is a summary of the current key national and international
research projects and documents which are underway on OWMS.
July 2018
Guidance Document: On-site Wastewater Management in the
Auckland Region Auckland Regional Council (GD06)
If adopted GD06 will replace TP58.
http://content.aucklanddesignmanual.co.nz/regulations/
technical-guidance/Documents/GD06%20-%20On-Site%
20Wastewater%20Management.pdf
Contact: Robyn Floyd (Auckland Council)
18 February 2019
On-site Wastewater workshop - Christchurch
Commitment by Water New Zealand is for the development of a
Best Practice Guide for On-site Wastewater Management which
will focus on a “whole of system” approach. Andrew Dakers of
ecoEng in Christchurch presented a case for an approach that
went beyond reliance on just the performance testing on
treatment units as is carried out at Rotorua under the OSET-NTP
(On-site Effluent Treatment National Testing Programme). Andrew
advocates a whole of system approach involving evaluation and
mitigation of individual site risks associated with the both the
treatment unit and land application system, and including design,
installation operation and maintenance.
Other issues raised at the workshop included a warrant of fitness
for on-site wastewater systems, and national certification for
installers and designers.
Contact: Noel Roberts (Water NZ) [email protected]
July 2019
Revitalisation of the Small Wastewater And Natural Systems
Special Interest Group of Water New Zealand (SWANS-SIG)
First conference call occurred on 29th July 2019
Contact: Sandy Ormiston [email protected]
2019
Review of the microbial inputs to the:
Guidelines for separation distances based on virus transport
between on-site domestic wastewater systems and wells
Contact: Murray Close (ESR) [email protected]
2019/2020
Instrumentation of an On-site Wastewater Management System
in Canterbury
Site selection and experimental design currently underway
Contact: Louise Weaver (ESR) [email protected]
2020
On-site Effluent Treatment (OSET) testing facility commences
testing according to AS 1546.3: 2017 “On-site domestic
wastewater treatment units Part 3: Secondary treatment
systems”
OWMS Journal Resources
2003
Borchardt, M.A et al. 2003. Septic system density and infec-
tious diarrhea in a defined population of children. Environmen-
tal Health Perspectives. Vol 111, No 5.
2003
Pang, L. et al. 2003. Estimation of septic tank setback distanc-
es based on transport of E. coli and F-RNA phages. Environ-
mental International. 29:907-921.
2006
Nokes, C. et al. 2006. Rural subdivision and development -
cumulative impact on groundwater quality. The NZWWA Joun-
ral, October 2006
2006
Pang, L. et al. 2006. Modeling the impact of clustered septic
tank systems on groundwater quality. Vadose Zone Journal.
5:599-609.
2016
Blaschke, A.P, et al. 2016. Setback distances between small
biological wastewater treatment systems and drinking water
wells against virus contamination in alluvial aquifers. Science
of The Total Environment. Vol 573 - OPEN ACCESS
https://www.sciencedirect.com/science/article/pii/
S0048969716317685
For any of these journals articles please contact Bronwyn
Humphries:
On-Site NewZ - Blog On-site Domestic Wastewater Management
https://onsitenewz.wordpress.com/
On-Site NewZ is an information service for the on-site
domestic wastewater management industry in New Zea-
land. It was launched by Ian Gunn in July 2006 as a 4-
articles per year blog.
6
Onsite Wastewater Management Systems (OWMS) Specialist profiles
Andrew Dakers [email protected] Andrew Dakers (BE, ME) is Director and Principal Engineer with ecoEng Ltd, based in
Christchurch. Andrew spent 20 years in academia (Senior Lecturer at Lincoln Uni)
providing teaching and research opportunities in the engineering and sciences relevant
to design and management of on-site wastewater systems. After leaving Lincoln Uni
Andrew has been self-employed for the past 20 year as part of ecoEng Ltd. He has been
personally involved in more than 1000 on-site wastewater projects, mostly in South
Island regions but also in the Pacific (Rarotonga, Fiji, Niue and Kiribati). He has extensive
experience in site, soil and risk assessment, modelling, design, resource consenting,
auditing, environmental impact assessment, installation supervision, preparing servicing
and maintenance programmes and reporting for a wide variety of designs for residential and commercial on-site
wastewater management systems.
Since early 2009 to present, he has been an appointed member of the Management Audit Group for the On-site
Effluent Treatment (OSET) National Testing Programme (based in Rotorua). Andrew is the instigator and convenor
of the On-site Wastewater Stakeholders Platform (OWSP) Canterbury. Andrew is called on by Local Government
and Consultants to review specific site assessment procedures and designs of on-site wastewater management
services. He is a member of Water NZ and Small Wastewater and Natural Systems Special Interest Group (SWANS
-SIG).
Brent Hawthorn [email protected]
Brent Hawthorn is the Technical Manager at Innoflow Technologies, an onsite wastewater
treatment plant supplier who design, supply, install and maintain package and
decentralised treatment plants throughout Australasia, and principally STEP/STEG Effluent
Sewers and AdvanTex Pack Bed Reactors manufactured by Orenco Systems Inc. Brent
graduated with a Master of Science (Geology) (Hons) in Earth Sciences from the University
of Waikato and has 20 years’ experience in designing and building wastewater treatment
plants and land treatment systems for facilities ranging from single dwellings up to large
subdivisions, and everything in between.
Brent has been a member of the NZLTC since 2001 and served on the Technical
Committee for 8 years of which he was Chairman for 2 years.
Fiona Ambury [email protected]
Fiona Ambury (BE Nat Res) is an independent Environmental Engineer who specialises in
the use of natural systems for the on-site treatment of stormwater and wastewater.
Between 2000 and 2014 Fiona worked for a specialist environmental consultancy in
Christchurch, before starting her own business (Whiterock Consulting Ltd) so that she
could work from her home in North Canterbury. Since this time she has enjoyed getting
into the field and being hands on with design work, something that is difficult to do as a
senior engineer for a firm. Her current work involves a mix of private, public and
commercial clients. She enjoys the challenge of ensuring clients get the best design for
their site, and she undertakes all aspects of project work from initial site assessments
through to design, consenting and construction supervision. Fiona’s previous work has included projects based in
Samoa, Pitcairn Islands, Great Barrier Island and throughout the South Island. Fiona is a Chartered Professional
Engineer and a member of Engineering NZ, Water NZ, and Engineers Without Borders.
7
Onsite Wastewater Management Systems (OWMS) Specialist profiles
Leif Piggot [email protected]
Leif Piggot (BSc, MSc (hon) Physics) is the Regional Consents Team Leader at Tasman
District Council, based in Richmond. Leif has spent the last 20+ years working in
Regional/ Unitary Councils. First as a scientist at Environment Waikato then managing the
science section for Otago Regional Council before going to London for a change of
pace. For the last 12 years, he has been working for Tasman processing regional
consents.
His interest in wastewater really started in Tasman. Onsite wastewater systems were
presenting a significant risk to the Council and there was a need for greater rigor for the
full life cycle of a wastewater system. Being a Unitary Authority Tasman has control of the
full process from initial zoning and planning framework through RMA consenting then
building consents to environmental monitoring. He has been working across the Council to get a better outcome
for the home owner and reducing the risk to the environment.
Sandy Ormiston [email protected]
Sandy Ormiston (BSc Geology, MSc Engineering Geology) established Ormiston Associates
Limited in 1994 and has developed expertise in On-site Wastewater Management, slope
stability and resource identification, definition and extraction for aggregates and industrial
minerals throughout New Zealand. He has presented papers at the New Zealand Land
Treatment Collective annual conferences since 1998 and on specialist wastewater water
management issues and served on the technical committee for 8 years of which he was
chairman for 5 years. Sandy has also co-authored on-site wastewater design guidelines for
Auckland Regional Council (TP58 2004) and Horizons Regional Council (2009). Sandy is
currently the co-chair with Trisha Simonson of the Small Wastewater and Natural Systems
Special Interest Group (SWANS-SIG).
Trisha Simonson [email protected]
Trisha Simonson is a Senior Engineering Geologist with Ormiston Associates Limited, an engineering and
geological consultancy based in Auckland specialising in on-site wastewater treatment and land disposal. She
graduated with a Master of Science (Technology) (Hons) in Earth Sciences from the University of Waikato and has
over 20 years’ experience in on-site wastewater management throughout New Zealand.
As a consultant Trisha has investigated and designed on-site wastewater treatment systems for a range of
projects from individual dwellings to larger scale applications such as subdivisions, commercial establishments
and institutions.
Trisha spent nine years with the Waikato Regional Council as a Senior Resource Officer in the Infrastructure Team,
managing a range of consenting processes from single on-site wastewater systems to highly complex proposals
including municipal wastewater treatment plants, dairy processing facilities, industrial wastewater discharges and
water takes. Trisha still assists Waikato Regional Council processing consent applications as a consultant and
provides technical advice and project support to the Bay of Plenty Regional Council.
Trisha has presented the Regulatory Session of Module 1 of the Opus On-Site Wastewater Treatment training
course since 2017. Trisha was a member of the NZLTC Technical Committee from 2013-2015 and is currently co-
chair with Sandy Ormiston of the Small Wastewater and Natural Systems Specialist Interest Group (SWANS-SIG).
8
Student Land Treatment Research
What shall we do with all the poo?
Minimising public health risks from human waste after a large Wellington Fault earthquake
The greater Wellington region, is highly vulnerable to large
earthquakes. While attention has been paid to the
consequences of earthquake damage to road, electricity
and water supply networks, the consequences of
wastewater network damage for public health,
environmental health and habitability of homes remain
largely unknown for Wellington City.
The Canterbury and Kaikōura earthquakes have
highlighted the vulnerability of sewerage systems to
disruption during a disaster. Management of human waste
is one of the critical components of disaster planning to
reduce faecal-oral transmission of disease and exposure to
disease-bearing vectors. In Canterbury and Kaikōura,
emergency sanitation involved a combination of portable
toilets, chemical toilets and backyard long-drops.
While many lessons may be learned from experiences in
Canterbury earthquakes, it is important to note that
isolation is likely to be a much greater factor for Wellington
households, compared to Christchurch, due to the
potential for widespread landslides in hill suburbs affecting
road access.
This in turn implies that human waste may have to be
managed onsite, as options such as chemical toilets and
portable toilets rely completely on road access for
delivering chemicals and collecting waste. While some
progress has been made on options such as emergency
composting toilets, significant knowledge gaps remain on
how to safely manage waste onsite.
This research is funded by QuakeCoRE and supported by
Massey University (Joint Centre for Disaster Research and
School of Health Sciences).
For more information, please contact Matt Brenin:
Funded by QuakeCoRE through the Joint Centre for
Disaster Research at Massey University, research is being
undertaken through 2019 to look at options to reduce the
pathogen count in human waste in a composting system.
In 2013, the Wellington Region Emergency Management
Office trialled a concept composting toilet system that had
been created from the Christchurch earthquake
experience. This trial focused on the user acceptability and
the current research seeks to further advance the
understanding and applicability of a composting type
system for disaster situations.
It is proposed that human waste will be collected from a
number of composting toilet systems set up in 12 homes
and businesses over a 2 week period. A number of
different carbon materials will be added with the addition
of Bokashi compost activator. Samples will then be taken
over several weeks to determine the rate of die off of the
indicator E.coli bacteria. The aim is to determine that the
easiest process to be followed for the safe handling of the
composted toilet waste. This then establishes the potential
for an emergency toilet option that reduces the impact of
isolation of many communities in the Wellington region and
beyond.
9
International Conference Land Use and Water Quality - Demark
Lee Burbery - ESR
In June I attended the biennial Land-use Water Quality (LuWQ)
Conference, in Aarhus, Denmark and whilst in town, visited
Aarhus Vand (Water) to learn about their approach for managing
drinking water supplies - Denmark being a country that supplies
untreated groundwater for potable supply – and R&D on
wastewater treatment.
LuWQ is an international and interdisciplinary conference on the
cutting edge of science, management and policy to minimise
effects of agriculture and land use changes on the quality of
groundwater and surface waters. This year it was attended by
240 delegates from 24 countries, more than 10% of whom were
from New Zealand. The societal aspect Kiwis put on water and
lack of farming subsidies to assist implementation of land-use
changes stood out as exotic, compared to other countries
represented.
Amongst the conference themes were: water quality monitoring;
research on quantifying the effects of improved farm
management and land-use practices on water quality;
assessment of water quality policies; eco-technological mitigation
measures and impact of climate change on land use and water
quality. Nitrate, phosphorus, pesticides and xenobiotics were
contaminants that featured heavily. I certainly got the impression
that contamination from pesticides is given a lot more weight in
Europe than we give it in New Zealand.
Memorable talks were Richard McDowell’s keynote address
providing a perspective on global nutrient loads and flows. The
talk provoked some interesting discussions on where future
farming activities might be focused around the globe. A message
I got from the closing lecture of the conference was that modern
farming is problematic and to feed the world sustainably we
should perhaps be looking at eating less meat and growing more
high protein pulses. No mention of over-population being the
problem.
The advanced thinking at Aarhus Vand and investment Denmark
make in R&D was inspiring, as was the pride and professionalism
the municipally-owned operator took in its work. The company
has a vision to build the worlds most efficient wastewater
treatment plant (Google: Aarhus REWATER) that will ultimately
recover energy, nutrients, protein and pharmaceuticals. The
amount of freshwater we waste in New Zealand would without
doubt be construed as socially irresponsible in Denmark.
Wastage we ultimately pay for downstream, treating effluent.
Historically, water consumption rates in Denmark were similar to
ours (~230 L/person/day), however water conservation efforts
have since brought this down to ~100
L/d, which makes supply and
treatment a lot more manageable.
In contrast to New Zealand, land-based
treatment of effluent is not favoured in
Europe and Denmark at least are
phasing out sludge disposal on
agricultural land. Of course, all of the
impressive catchment management,
water quality monitoring and
wastewater treatment efforts come at
a huge financial cost. Aside from the
high income tax rate in Denmark,
people are forced to value water as a
resource for more than its cultural
significance, currently to the tune of
NZD$11/m3. Nonetheless, there’s
nothing to suggest they mind, given
they rank as one of the happiest
nations in the World.
Lee Burbery’s biography (NZLTC Collaborator)
Dr Lee Burbery (Senior Groundwater
Scientist) based in Christchurch in the
ESR groundwater team.
“Much of our groundwater research
is targeted directly at answering a
question or providing some scientific
solution to a groundwater pollution
issue, such as nitrate contamination
from intensified farming or microbial
contamination from land-based effluent
disposal practices,” Lee says.
“We work closely with regional councils and public health
authorities on matters that are of concern to them, and our
scientific investigations might vary in physical scale from small in
vitro tests performed in the lab, to a full-blown field-scale
investigation of a particular groundwater system.”
Much of his research focus is on nitrate pollution. He currently
leads several field projects that are testing whether woodchip
denitrifying bioreactors are a feasible nitrate-mitigation option for
the agricultural sector and water management in the Canterbury
region.
“To address the problem of farming within freshwater quality
limits, we are exploring ways to enhance natural attenuation of
nitrate in groundwater. Our work is targeted at reducing nitrate in
gravel aquifer systems, since gravel aquifers contain much of New
Zealand’s usable groundwater and are particularly vulnerable to
nitrogen contamination.”
Lee is working on tailoring denitrification wall technology to gravel
aquifer settings. For more details see: https://www.stuff.co.nz/the-
press/news/north-canterbury/109547727/worldfirst-water-quality
-project-improves-test-stream
For further information please contact:
https://www.luwq2019.dk/
Figure 1: An example of the
pride Denmark takes in
supplying untreated ground-
water for potable consump-
tion.
10
NZLTC Resources
The NZLTC is 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/
The latest Northwest Biosolids June and July newsletters focus on Infectious Diseases and Per- and Polyfuoroalkyl Substances (PFAS)
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: Infectious disease hazards of land spreading sewage wastes
Author: Burge, W.D. and P.B. Marsh
Source: J. Environ. Qual. 1978 7:1-9
Title: Emerging investigators series: the source and fate of pandemic viruses in the urban water cycle
Author: Wigginton, K.R., Y, Ye and R.M. Ellenberg
Source: Environ. Sci. Water Research Tech. 2015 DOI: 10.1039/c5ew00125k
Title: Survival of Corona viruses in water and wastewater
Author: Gundy, P.M., C.P. Gerba, and I.L. Pepper
Source: Food Environ. Virol. 2009. 1:10-14
Title: Partitioning of viruses in wastewater systems and potential for aerosolization
Author: Lee, M.T., A. Pruden and L.C. Marr.
Source: Environ, Sci. Tech. letters 2016 3:210-215
Title: Comparative survival of viruses during thermophilic and mesophilic anaerobic digestion
Author: Sassi, H.P., L.A. Ikner, S. Elmaksoud, C.P. Gerba, and I.L. Pepper
Source: Sci. Total Envir. 2018 615:15-19
Title: Statement on FDA’s scientific work to understand per– and polyfuoroalkyl substances (PFAS) in food, and findings
from recent FDA surveys
Author: N. E Sharpless
Source: Environ. Sci. Tech. 2013 47:10721-10726
Title: Perfluoroalkyl Acid characteristion in U.S. municipal organic solid waste composts
Author: Choi, Y.J., R.K. Lazcano, P. Yousefi, H. Trim and L.S. Lee.
Source: Environ. Sci Tech. Letter. 2019 DOI 10.1021/acs.estlett.9b00280
Title: Per– and Polyfluoroalkyl substances (PFAS) in waste-derived fertilizers
Author: R.K. Lazcano et al.
Source: Biocycle West Coast Conference Portland, OR 2019
Title: Serum concentrations of PFAS and exposure-related behaviors in African American and non-Hispanic white women
Author: K.E. Boronow, J.G. Brody, L.A. Schaider, G.F. Peaslee, L. Havas, B.A. Cohn
Source: J. Exposure Sci. & Environ. Epidemiology. 2019 29:206-217
Title: Relating pharmaceuticals and personal care products in biosolids to home exposure
Author: S. Brown, L. Kennedy, M. Cullington, A. Mihle, and M. Lono-Batura
Source: Urban Agric. REg. Food Syst. 2019 4:180005. doi 10.2134/urbanag2018.12.0005
Infectious Diseases
Per- and Polyfuoroalkyl Substances (PFAS)
11
Water NZ 2019 Conference
NZLTC Technical Manager
Bronwyn Humphries
NZLTC Finance and Administration Management
Robyn Chapple
NZLTC Contacts
NZLTC 2019 Photo
Competition Winner
Wednesday 18th September 11am - 12:30pm Biosolids session
11:05am - 11:30am
The value of biosolids in NZ - An industry assessment
ROB TINHOLT
Watercare Services
11:30 - 12:00
The Bioboost® Fertiliser Story - Successful Biosolid Beneficial Reuse
GRAHAM MORRIS
New Plymouth District Council
12:00 - 12:30
Biosolids from co-digestion - The critical success factors
GOKUL BHARAMBE
Jacobs Asia Pacific, Middle East
Wednesday 18th September 2:20 - 5:30pm Biosolids Workshop
Workshop run by Rob Tinholt (Watercare)
Important dates
2019/2020 NZLTC Memberships due
Water NZ Conference 18 - 20 September
2019: Hamilton
Effluent Expo 19 - 20 November 2019
Hamilton
NZ Freshwater Sciences Society Conference 1
– 4th Dec 2019: Geelong, Australia
NZ Hydrological Society Conference 3 - 6th
December 2019: Rotorua
Congratulations to Brent Hawthorn (Innoflow) who
has won the 2019 NZLTC photo competition. The
chocolate prize is on its way!
The winning photo shows the construction of 12
AdvanTex Textile Filter Pods for a camping ground in
the Bay of Plenty.