Conference Papers

Delivering Wellington's Emergency Water Network

19/09/2018

A significant earthquake in the Wellington region will result in damage to the potable water network, and could result in parts of the region being without water for long periods. The Kaikoura earthquake in 2016 was a clear reminder of the risks facing the Wellington region should a large earthquake occur.

Why a chlorine residual? Facts and Uncertainties.

19/09/2018

Why a chlorine residual? Facts and Uncertainties, Laith Furatian, City of Kamloops, Canada

WHO Guidelines for Small Drinking-water Supplies

19/09/2018

WHO Guidelines for Small Drinking-water Supplies, Batsi Majuru, World Health Organisation

Advances In Wastewater Treatment - Reducing Energy Use While Improving Effluent Quality

19/09/2018

This paper outlines conventional and short-cut nitrogen removal processes, demonstrating the potential reductions in energy use, increases in capacity and improvements in effluent quality that can be achieved.

Establishing nitrite shunt at full scale

19/09/2018

This paper describes the process and challenges of implementing a full scale nitrite shunt process in one of nine step-feed reactor-clarifiers (RCs) and subsequently introducing it to three other RCs.

A Utilities’ Guide To Starting Up

19/09/2018

The anammox (anaerobic ammonium oxidation) process has been one of the most innovative developments in biological wastewater treatment in recent years.

Emerging Organic Contaminants: What Are They and Should We Be Concerned?

19/09/2018

Emerging organic contaminants (EOCs) are gaining increasing attention across the globe. But what are they and should we be concerned?

Effective And Innovative Partnership Model For Delivery Of Major Treatment Programs

19/09/2018

An additional half a million people will live in Sydney’s North West by 2040, placing increased demands on the city’s wastewater treatment infrastructure.

Protection of Drinking Water Sources post Havelock North

19/09/2018

Protection of Drinking Water Sources post Havelock North, Tony Cussins (Tonkin & Taylor) & Brett Chapman (Hastings DC)

Project Shotover - What Did We Learn? What Did We Achieve?

19/09/2018

This paper considers the Stage 1 project which was procured in 2014/15, built in 2015/16 and commissioned in 2017.

Canada’s Walkerton Water Contamination Event: Impact on Drinking Water Regulations

19/09/2018

Canada’s Walkerton Water Contamination Event: Impact on Drinking Water Regulations, David Pernitsky Stantec

Energy Management In Allwater: 5 Years On - Watts Worked?

19/09/2018

This paper outlines Allwater’s Energy Management journey over the past five years and the lessons learnt, together with details of some of the innovative ideas implemented throughout the business which have led to significant energy savings.

Boosting Energy Production Through Co- Digestion

19/09/2018

This paper provides an overview of the co-digestion journey and the technical and operational lessons learnt from going through this process, in addition to the innovative tools that can be utilised to boost biogas production.

Trade “Waste Of Time” – Craft Brewery Wwtp Simplification And Improvement

19/09/2018

This paper describes the steps taken to develop, simplify and improve the WWTP. It also discusses the importance of developing simple, robust WWTPs to apply across the wider Craft/Microbrewery industry as more home-brewers graduate into the Microbrewery scene and major breweries look to scale-down their brewing and treatment processes.

Prioritising Water to drive Sustainable, Resilient Communities

19/09/2018

Cindy Wallis-Lage, President, Black & Veatch - Prioritising Water to drive Sustainable, Resilient Communities

Water Summit 2018

19/07/2018

LGNZ, Water New Zealand and IPWEA Water Summit held 30 - 31 May 2018

Diesel Exhaust Fluid – Innovative Stormwater Treatment Trials for High Ammoniacal Nitrogen Concentrations

28/06/2018

Stormwater360 have been working on a treatment solution for high ammoniacal nitrogen concentrations (38 to 132 mg/L) that have been measured in stormwater effluent discharges downstream of existing oil/water separators at refueling truck stops.

Application of Artificial Neural Network Model to Forecast Runoff for Waikato River Catchment

28/06/2018

As we know that over the past decade or so the Artificial Intelligence (AI) techniques (e.g. ANN - Artificial Neural Network & FIS - Fuzzy Interference System) have been used as an alternative modelling tools in water resources management studies.

Emergent Challenges Adapting Coastal Stormwater and Drainage Systems

26/06/2018

The presentation will provide a synthesis of the compounding and cascading impacts from SLR and changes to coastal processes on stormwater and drainage networks, which can inform their consideration in decision making in coastal areas and; how dynamic adaptive pathway planning, with signals and triggers to guide implementation of adaptation options or pathways.

Setting Limits for E.Coli – the Urban Allocation

25/06/2018

This presentation will discuss E. coli modelling being undertaken to inform Greater Wellington’s collaborative limit setting process for the Porirua Whaitua.

Stormwater Management for Regeneration of the Three Kings Quarry

25/06/2018

This paper sets out the development of the overall stormwater management approach and how the challenges were addressed.

The Benefits of Continuous Simulation Stormwater Quality Modelling in Christchurch

24/05/2018

This paper presents a summary of the rainfall-runoff model calibration results against both DCIA and TIA parameters and summarises the suitability of this model for use in Christchurch and other regions within New Zealand.

Acid Sulphate Soils: Identification and Management in NZ’s Largest Airport

24/05/2018

Whilst the presence and effects of acid sulphate soils on the environment and underground infrastructure are common knowledge in regions such as Northland and the Bay of Plenty, these soils have only been identified in isolated locations within the Auckland region.

Rain Garden Maintenance Costs in an Industrial Development

24/05/2018

This paper presents 22 months of maintenance costs for the first 12 rain gardens.

The paper also discusses some of the health and safety in design considerations made during the design and construction of the rain gardens and the soakage systems.

Where are we as a Water Sensitive City? A Case Study on a Sustainable Development

24/05/2018

This case study is an example of a development which embraces numerous principles of Water Sensitive Design, progressing beyond the policy requirements for stormwater management in Auckland.