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Printer Friendly VersionSelected Information - Completed Research

NP175  Ground Water Investigation & Passive Wastewater Treatment Water Resources
Together with the UK Regulator, the Environment Agency and a UK Water Utility, WRc has investigated the use of passive wastewater treatment and soakaways.

Boreholes have been constructed at 2 wastewater treatment sites to sample the unsaturated and saturated zones of underlying strata in Southern England and to construct permanent observation wells for routine groundwater monitoring.

High speed centrifuge porewater extraction techniques were used to ensure the correct amount of porewater was sub sampled from the rock cores, whilst ensuring no cross contamination occurred. The samples were tested to determine the unsaturated zone's ability to absorb and decay constituents within the wastewater. Pumping tests conducted within the completed observation well will determine the local hydogeological environment and any preferential flow paths that exist.

Benefits

  • The research will provide the scientific background required to support passive wastewater treatment using soakaways in this region.
WRc's Portfolio Programme
Summary of the £1.5 million per annum research programme

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