Infiltration percolation (IP) is an extensive technology to treat primary or secondary effluents of small and middle size communities before reuse or disposal to sensitive receiving bodies. Thirteen years of implementation of IP in Spain has highlighted the necessity to abide by defined design and construction rules and operation conditions in order to achieve consistently the treatment objectives and guarantee a long lasting treatment capacity. From this experience, high care should be taken of (i) the characteristics of the sand constituting the filter, (ii) the drainage conditions, (iii) the influent spreading over the infiltration surface and (iv) the risks related to recurrent overloading. Simple monitoring measures are suggested in order to improve the reliability of IP plants.
Wastewater infiltration percolation for water reuse and receiving body protection: thirteen years' experience in Spain
F. Brissaud, M. Salgot, M. Folch, M. Auset, E. Huertas, A. Torrens; Wastewater infiltration percolation for water reuse and receiving body protection: thirteen years' experience in Spain. Water Sci Technol 1 April 2007; 55 (7): 227–234. doi: https://doi.org/10.2166/wst.2007.149
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