Reports

Experiences with leak detection and control

There has been an increased focus on leak detection in the water distribution systems in Norway. From this project we have learned that the water loss from the municipal pipelines ranges from 14 % to 40 % of the total water supply production.

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Guidance Manual for Process Design of Wastewater Treatment Plants

This guidance manual gives recommendations for design of processes in municipal wastewater treatment plants and treatment of sludge.

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Guidelines for Purchase of Water Treatment Chemicals

Operating water treatment systems requires different chemicals and often in large quantities. The chemical costs are often a great portion of the total operational budget, and are completely essential for the treatment works to be able to meet their discharge permits or obtain the required effluent quality. The treatment works are therefore highly dependent on chemicals of high quality and high delivery security.

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Methods for Improving Chemical Phosphorus Removal in Municipal Wastewater Treatment Plants

According to Norwegian legislation, the standard discharge requirement for removal of phosphorus in municipal wastewater treatment plants is 90 % (annual average). Generally, the chemical treatment process...

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Tool for Maintenance Data Collection

“Tool for Maintenance Data Collection” (“Innsamlingsverktøy for vedlikeholdsdata”) consists of this report and the actual tool which is based on MS Excel.

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UV Disinfection Guidance Manual

The application of UV-disinfection systems is rapidly growing throughout the world. The main reasons...

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Guidelines for Contracting of Analytical Services

Contracting of analytical services is an important issue in organisations responsible for operation of municipal water and wastewater installations. In addition to the analytical work, the laboratory also provides sample containers, transport of the samples, and reporting of the results. Consequently, the purchase includes a wide range of services that have to fit the client’s need.

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Veiledning i klimatilpasset overvannshåndtering

Rapporten er en videreføring/revisjon av rapport 144, hvor estimerte effekter av klimautviklingen er tatt med.

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Safe and Hygienic Water Distribution

Focus on safe and healthy water supply has increased in the recent years. A recognition that we do not have sufficient overview of the situation in the underground assets has been the motivation for this project.

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Operational Experience with Nanofiltration

In the last two decades, surface water treatment with nanofiltration membranes has become an attractive alternative to conventional treatment...

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Manual for Source Identification in Public Sewerage Systems

The manual gives an overview of different methods used in the source identification work.

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Thermo Plastic Pipes in Norway - Previous and Current Use

This report is a part of the Norwegian Waters Material Technology Project and describes the use of thermo plastic pipes in Norway, mainly PE and PVC pressure pipes.

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Micropollutants in Norwegian Sewage Sludge - Results from an investigation in 2006/07

A new investigation has been carried out to analyse the content of organic micropollutants in Norwegian sludge from nine municipal wastewater treatment plants.

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Technical Guideline for Oil Separator Systems

The technical guideline contains an overview of the national legislation concerning discharge of wastewater containing mineral oil to water recipients or to the municipal sewerage system.

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Norm for Labelling, Documentation for Management and Maintenance in Water and Sewage Projects

This document (norm) consists of requirements for labelling, documentation for management and maintenance in water and sewage projects and describes routines and tools to take care of the information flow through the project. The norm describes how to achieve a clear and uniform data- and information structure that gives a good overview and simplifies troubleshooting.

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Norm for Tag Coding in Water and Sewerage Works

This document consists of requirements for identification and labelling of plants and objects, their location, system belonging and function.

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HMI Design Basis, Majoring in Symbols, Colours and Object Handling

This document gives design basis advices for HMI systems used for control, monitoring and supervision in Water and Sewage Works.

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Guide for Purchase of Control Systems and SCADA systems in Potable Water and Sewage Works.

This document consists of an overall guide and recommendations for purchase of control systems and supervisory control systems for water and Sewage Works.

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Guidelines for Maintenance Management Systems

These guidelines regarding the implementation of Maintenance Management Systems (MMS) in a municipally authority organisation is prepared by the Norwegian Water and Wastewater BA (NORVAR). Ivar Helleberg, NORVAR BA has been project manager.

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Dataflow. Classification of Sewer Pipes

This report describes a model for describing existing pipes, based on weighted observations from pipe inspection. Further on, specifications for transferring the data from pipe inspection to registration, storage and additional use are given.

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