As part of a larger commercial building feasibility study, the water quality in five rainwater harvesting and greywater recycling systems is being tested.
This coupled with the close proximity of groundwater to waste disposal poses a serious threat to public health in Kiribati.
This study presents a meta-genomic survey of three New Zealand WWTP denitrifying microbial populations. Data was mined for 16s rDNA and the functional denitrifying genes nirK, nirS, nosZ Clade I and nosZ CladeII. 16s analysis shows WWTPs to have a phyla profile typical of WWTPs and that they differ from one another at the genus level.
This paper will discuss how Watercare Services Limited and Tauranga City Council have adopted a software solution provided by blackbox22 that integrates with the individual as-built submitter to insure the data submitted by them is of high quality and formatted correctly.
We present the results of an experimental study to promote OMP removal from farm and municipal wastewater by inducing enzyme production using dynamic oxygen control.
The system has been used in Sydney for sections of pipelines where failures have occurred. RTMS has been easy to install and has allowed the water authority to continue to operate the main (or specifically a high-risk section) whilst condition assessments and/or pipeline replacement evaluations are being conducted.
The main focus is on water-main pressure pipeline relining / rehabilitation and gives and explanation of the system, its benefits, development, how it is designed and installed.
Pruning, thinning and harvesting of planted Pinus radiata forests have the potential to export large amounts of terrestrial natural organic matter (NOM) to surface waters. The characteristics of NOM are a function of its precursor material.
A partnership between the Christchurch and Government agencies was established in 2011 with the intention of repairing earthquake damaged horizontal infrastructure. The earthquakes weakened 1600km of brittle pipes, ~65% of the total wastewater infrastructure, but left them in a “just operational” level of service.
In preparing the paper the author engaged with the leading Trenchless Technology contractors and the paper will illustrate their views of what makes tendered projects particularly attractive and unattractive to them.
Membrane systems have gained considerable attention for their ability to produce high quality water. Nevertheless, membrane fouling is the major cause of deterioration in performance of these treatment systems.
The paper will discuss two main categories of technology pertinent to Intelligent Networks:
1. Time Series Analysis/Reporting:
An event detection “watch dog” accepts time series in real time from field providing web-based data access and diagnostics to all within a water organization.
2. Automated Hydraulic Model Projections.
Informed by live and predicted data the automated hydraulic model utilizes predictive capabilities flow, pressure, velocity, water quality and energy consumption may be modelled through all parts of network.
This paper summarizes the current IMCP, the methodology for measuring midge numbers, the successes, failures, and the lessons learned over the past 10 years. This paper also summarizes how Watercare Services Ltd engages with the community and pursues its vision of being a good neighbour.
This paper describes some of the more interesting facets of the project and draws on these to develop a number of lessons that may help other designers in the future.
Affordable wastewater management for the residents of Whangarei was developed through consultation and understanding the community drivers alongside focussed technical investigations to identify a cost effective solution that would meet the community expectations.
The Strategy is focused on the treatment of wastewater through land disposal, and removal of effluent from local rivers and streams in an affordable staged manner to optimise the reduction in adverse effects associated with direct discharges of treated effluent to water, particularly during low river and stream flow conditions where potential effects on water quality are greatest.
This paper shares the reform process undertaken by PPSWA that has catapulted a war-torn dilapidated water utility into an efficient and profit making one.
The Victoria Street Transformation Project has provided Wellington with a tree lined boulevard, enhancing the pedestrian experience with wider footpaths and parks. This has facilitated and encouraged development within the area as well as improved traffic and cycling flows.
This paper discusses the development of a long-term strategy based on understanding the frequency, extent and environmental impact of overflows relative to other continual or intermittent discharges.