Grey Water Treatment by Slanted Soil System Considering Practical Condition in Sahel Africa

Abstract

 This study aims to evaluate the performance of Slanted Soil System (1) under water use condition in rural family in Sahel Africa, and (2) using soil which containing compalatively wider range of particle size than former studies. Experimental condition was designed on the basis of field survey conducted in Burkina Faso. Soil contains wider range showed no clogging in 8 weeks experimental period, and LAS, COD, SS removal were same level as fine soil, which showed good removal efficiency but easy to clogg. There observed two pathways of water flow in chamber: soil surface run-off, and soil infilteration flow. These pathways may have buffering function to diffuse clogging effect and enlong the period until complete clogging without breakthrough.