Variation of Some Waste Stabilization Pond Parameters With Shape

Waste Stabilization Pond (WSP) are designed to provide control environment for wastewater treatment. The primary purpose of wastewater treatment is the reduction of pathogenic contamination, suspended solids, oxygen demand and nutrient environment. The geometry of the pond could be structured in order to give the desired dispersion condition. However, the variation of pond shape and parameters such as coliform bacteria, suspended solids (ss), BOD 5 , dispersion number and detention time ( θ ) have been studied, analysed and compared between rectangular and trapezoidal pond in order to determine their performance efficiency. The results of the experimental analysis reveal that the performance of the rectangular pond was better than that of the trapezoidal pond in term of bacteria reduction, BOD 5 and dispersion number, respectively. Keywords: Geometry, coliform bacteria, dispersion number, trapezoidal pond, rectangular pond.