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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.