Library
Conference Papers Distribution and Infrastructure Resource - Conference Papers

Rotarua's experience in pressure sewer system implementation

07/09/2009

This paper will outline Rotorua District Council’s experience related to the construction, commissioning and start up operation of the LPGP system installed; in particular dealing with the householders during construction phase.
Conference Papers Distribution and Infrastructure Resource - Conference Papers

Comparing the costs - Trenchless versus traditional methods

07/09/2009

This paper discusses the comparisons of cost and the factors that impact on a project, the environment and society that should be considered when selecting the appropriate pipeline construction methodology.
Community Engagement Conference Papers Resource - Conference Papers

Sustainable catchment programme - Weaving science and community into action

07/09/2009

Integrated catchment management (ICM) is a holistic approach to managing natural resources within a defined geographical catchment area. The management effort in catchments is often fragmented, lacking cohesion and focus and sometimes at odds with each other.

Conference Papers Management Resource - Conference Papers

What happened to Project Care?

07/09/2009

The paper will provided details around the actual and future system performance using hydraulic modeling, how the cost have changed and many observations and lessons learned that are worth sharing.
Conference Papers Natural Environment Resource - Conference Papers

Determination of sources of contaminants in freshwater in the Horizons (Manawatu-Wanganui) region

07/09/2009

Horizons is responsible for all aspects of water, air and soil management in the Manawatu-Wanganui region. We have sought to improve knowledge of relative contributions of freshwater contamination from various sources.
Conference Papers Resource - Conference Papers Wastewater Treatment

Seasonal impact of dairy farm effluent on an SBR treatment plant

07/09/2009

The seasonal impact of dairy factory effluent, on the wastewater treatment plant receiving it, has been studied over several years.
Conference Papers Natural Environment Resource - Conference Papers

Explaining differential sources of zoonotic pathogens in intensively-farmed catchments using kinematic waves

07/09/2009

Aquatic microbiological surveys in streams draining intensively farmed catchments can, during flood events, indicate differential time-concentration patterns between a bacterial health-risk indicator (E. coli) and a major zoonotic bacterial pathogen that it seeks to indicate—Campylobacter.
Conference Papers Management Resource - Conference Papers Wastewater Treatment

Use of multi-criteria analysis to identify a preferred dam site

07/09/2009

How do you make a robust management decision on a preferred site for a new water supply dam when the three short listed locations each have different advantages, disadvantages, issues and costs?

Conference Papers Resource - Conference Papers Stormwater

Water quality issues and management solutions of an iconic urban lake

07/09/2009

This paper presents the methodology, outcomes and the resulting work which sought to link water quality issues with their causes, and to then identify mitigation and improvement solutions.
Conference Papers Distribution and Infrastructure Resource - Conference Papers

Using a Markov model to estimate pipe deterioration

07/09/2009

The Markov process is a mathematical model used to recreate stochastic systems which have the property of being “memory-less”. That is; those systems for which the probability of being in any future state is dependent solely on the current state and not the past.

Conference Papers Management Resource - Conference Papers

The essentials of planning pipeline renewals

07/09/2009

This paper introduces the basic principles of pipeline renewal and focuses on two of the key factors that are at the foundation of any renewal programme; data collection and condition assessment. Understanding and effectively implementing these two steps will greatly assist the efficient and sustainable planning of pipeline renewals.
Conference Papers Resource - Conference Papers Wastewater Treatment

High resolution measurements in the waste water industry: Case studies

07/09/2009

In the water and wastewater industries, historic best engineering practice for quantification or characterisation of water or wastewaters involved grab-sampling campaigns.
Conference Papers Resource - Conference Papers Wastewater Treatment

Impact of improved primary sedimentation efficiency on operations at the Rosedale WWTP

07/09/2009

Following the recent Rosedale Wastewater Treatment Plant Stage 5 upgrade and the associated construction of two additional primary sedimentation tanks there have been some noticeable improvements in operational efficiencies and process stability.
Conference Papers Resource - Conference Papers Wastewater Treatment

Granular activated sludge - Project Generate progress

07/09/2009

Construction of the demonstration Granular Activated Sludge treatment plant at the Rotorua WWTP site went smoothly. Initial teething problems have coincidentally all been related to air supply.

Conference Papers Resource - Conference Papers Wastewater Treatment

Dosing MPE50 polymer to increase MBR flux rates

07/09/2009

Stormwater ingress and infiltration (I&I) into the wastewater reticulation in Te Aroha is high, with the hydraulic capacity of the membrane bioreactor (MBR) being inadequate to treat wet weather flows (WWF).

Conference Papers Distribution and Infrastructure Resource - Conference Papers

Sewer rehabilitation techniques

07/09/2009

The first sewer network in NZ was installed in the 1880s in Christchurch. It is therefore likely that sewers in NZ have been leaking for something like a hundred years.

Conference Papers Distribution and Infrastructure Resource - Conference Papers

Internally restrained Socket-and-Spigot PVC pipe used for horizontal directional drilling

07/09/2009

HDD (Horizontal Directional Drilling) Technology originated in the oil fields of the western United States in the 1970’s. HDD technology was developed by merging the installation know-how of a water utility with that of a water well drilling company.

Conference Papers Distribution and Infrastructure Resource - Conference Papers

Effective overflow management

07/09/2009

This paper looks at the impact of CSOs and SSOs on the receiving environment, and discusses the most effective methods for assessing their impact, and significance, prioritising the worst offenders and then designing effective management and improvement programmes.
Conference Papers Natural Environment Resource - Conference Papers Wastewater Treatment

The top ten most common mistakes in wastewater modelling

07/09/2009

This paper explores some of the most common mistakes made in the development and utilisation of wastewater collection system models.
Conference Papers Resource - Conference Papers Rural Systems Stormwater

Hydrological modeling applications of high resolution rain radar

07/09/2009

In many hydrological modelling applications it is considered advantageous to measure, in real time, the state of catchments and make predictions about future outflows. Precipitation data is typically fed into hydrological models from sparse gauge networks, or from just a single gauge.

Conference Papers Resource - Conference Papers Wastewater Treatment

Preparing a consultant brief for a large wastewater infrastructure planning project - A case study of Project Storm 2

07/09/2009

This paper comments on the challenges in preparing the Consultants’ Brief for Project Storm 2. It also provides discussion on the lessons learnt through the process, and ideas that may be useful for the planning and preparation of modelling briefs by client organisations in the future.
Conference Papers Distribution and Infrastructure Resource - Conference Papers

Get the modelling right first time……A new paradigm in modelling processes

07/09/2009

This paper describes an over-arching process that pulls together the key and forgotten elements of a modelling project to ensure they never go over time or over budget. The process is generic in principle and collaborative in nature so that client needs and modeller delivery matches precisely. Surprises during a project that can usually compromise the final outcome are avoided.
Conference Papers Distribution and Infrastructure Resource - Conference Papers

Utilities network replacement in a geothermal area in Rotarua

07/09/2009

This paper will outline the evaluation process that the Rotorua District Council undertook in choosing the preferred pipe material for the application which involved both desktop studies and field trials. It will also present the difficulties encountered in undertaking the pipeline replacement work in a very active geothermal area.
Conference Papers Management Resource - Conference Papers

Analysing the Auckland water annual performance report: Highlighting effective management practices

07/09/2009

This paper will provide a brief review of the AWG Performance Report to highlight the critical performance measures that are essential for effective utility management.

Conference Papers Management Resource - Conference Papers

Developing innovation tools for use in infrastructure projects

07/09/2009

The paper covers the exploration of areas in a wastewater network infrastructure project where innovation can be applied, from feasibility through to construction, and explores how the innovation tools used vary from stage to stage, and within each stage.