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On-site Wastewater Treatment Research

Domestic wastewater from over one third of the Irish population is treated in small-scale independent systems where connection to a sewer is deemed unfeasible. In such cases, the most prevalent treatment application is the conventional septic tank system with percolation area. A series of projects, funded by the EPA, have been investigating the performance of such on-site systems on seven different sites over the past number of years. The linked projects have been looking at the breakdown of on-site effluent (both septic tank and secondary) as it percolates through subsoil of different characteristics; evaluating the performance of different secondary treatment processes (particularly sand filters and reed beds); characterizing the quantity and patterns of domestic wastewater production and; assessing the efficiency of various distribution devices.

 

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