Municipal Wastewater Treatment by the Overland Flow Method of Land Application

摘要

The primary objectives of this study were to assess on a seasonal basis (winter and summer applications), the capabilities of treating raw (screened) municipal wastewater and secondarily treated wastewater (wastewater stabilization pond effluent), by applying the wastewaters to experimental overland flow treatment modules, on two slopes: 2 per cent and 3 per cent. Three application techniques in the raw treatment phase were employed for comparison: (a) rotating spray booms with fan nozzles, (b) fixed riser and trough methods were used for the secondary treatment phase. Comparison was made between the performance of the raw wastewater overland flow system and the performance of the wastewater stabilization pond receiving the same wastewater. Tests were conducted to determine removal efficiencies for the two treatment systems and the soil composition.