European Fundend Projects

  • ID:
    projects-582
  • fiwar:
    LIFE00 ENV/EE/000922
  • Project_Acronym:
    RAKWANET
  • Project_Name:
    Demonstration Activities for the Reduction of Water Losses and Preservation of Water Quality in Over-dimensioned Water Distribution Network in Rakvere Town, Estonia
  • Funding Authority:
    LIFE
  • Call for proposals:
    Environment
  • Focus Area:
    Water management and supply,Water resources protection
  • Begin Date:
    2001-09-15
  • End Date:
    2003-09-15
  • Status:
    Completed
  • Budget:
    No data
  • Description:
    The main objective of the project was to prepare a comprehensive and integrated plan for the reduction of water loss from over-sized and degraded water distribution network in Rakvere town, whilst preserving the quality of water supplied to consumers and ensuring protection of groundwater. The wider aim of the project was to ensure a safe water supply in the future without any negative health impacts, and in quantities and qualities that correspond to future demand and Estonian and EU legislation. The project set out to close all separate old wells in the town and to supply water through the new water treatment plant. During the demonstration project it was planned to carry out all necessary activities to solve the problem of preserving water quality at requisite levels, when water flow will be reduced due to the reduction of water losses. The project aimed at addressing the goals of the Water Framework Directive, the Drinking Water Quality Directive (98/83/EC) and a number of Estonian legislative acts addressing issues of water consumption and protection. Nine main activities were to be undertaken: 1. Design and set-up of the technical database using Access software for detailed logging of water supply, sewage network and water consumption data. The database is designed to be used as an engineering, administrative and management tool for planning and decision making. 2. Leak detection and flow measurements in the water distribution network and inspection of valve chambers to determine the need for replacement of valves. 3. Creation and calibration of a computerized hydraulic model of the water network to determine the best technical and economic solution for the water supply network. 4. Design of a water loss control and management system and a remote control system for the continuous flow and pressure measurement and regulation. 5. Reconstruction of valve chambers for closing during the flushing, installation of pre-fabricated chambers with inductive water meters and pressure meters. 6. Cleaning of the water distribution network using mechanical ('eco-pig') and hydro/pneumatic (air and water) technology. The main purpose of this activity was to carry out cleaning of ca'30 km pipelines using two alternative methods, to increase the quality of supplied water and to demonstrate new and modern techniques of cleaning of water pipelines. 7. Reduction of hazards to the ground water quality by - closing of five old ground water wells with depth from 105 to 285 m. - mechanical cleaning of 9,10 km of sewage pipelines - CC-TV inspection of sewage pipelines - preparation of a renovation action plan for the sewage pipelines 8. Setting up measures for the improvement of operation and maintenance of the water supply system for the reduction of water loss and preservation of water quality.
  • Resource:
    https://webgate.ec.europa.eu/life/publicWebsite/project/LIFE00-ENV-EE-000922/demonstration-activities-for-the-reduction-of-water-losses-and-preservation-of-water-quality-in-over-dimensioned-water-distribution-network-in-rakvere-town-estonia
  • Inland water types:
    Urban water', 'Groundwater'