TREATMENT OF DOMESTIC WASTEWATER IN SHALLOW WASTE STABILIZATION PONDS FOR AGRICULTURAL IRRIGATION REUSE <a href="http://dx.doi.org/10.4090/juee.2009.v3n2.058062" Target="_blank">(doi: 10.4090/juee.2009.v3n2.058062)</a>

Abstract

Stabilization ponds are a well established wastewater treatment system being considered by World Health Organization as one of the most appropriated technology for domestic wastewater when agricultural reuse is considered, especially in developing countries. This study was performed in a series of pilot-scale stabilization ponds, being one facultative and three maturation ponds, with depts varying from 0.44 to 0.57m. The substrate being treated was composed of a mixture of domestic wastewater and previously anaerobicaly treated leachate. The experimental system was monitored in two different phases, in which the hydraulic retention times was 15 (phase 1) and 10 days (phase 2). Termotolerant coliform removal efficiency were 3.8 log10 units in both phases while organic matter ( BOD5) removal was 87 and 68% for phases 1 and 2 respectively.