Wastewater produced from many industrial operations has to be treated before being allowed to join the natural water body. Wastewater stabilization pond technology (WSPT) is an important natural and cost-effective wastewater treatment method for the removal of pathogenic micro-organisms in tropical countries like Ghana, because of the intensity of the sunlight and temperature. In Ghana, almost all the domestic sewages are discharged into the environment without treatment. To avoid polluting nearby streams and surface water body, sewage generated in the residential areas of Obuasi is managed by applying Waste Stabilisation Ponds Technology. This paper studied the WSPT at Obuasi. Physico-chemical and microbiological analyses were done to the samples collected from wastewater ponds. The results showed that the wastewater quality parameters of the effluent from the last pond meet the threshold values set by the Environmental Protection Agency (EPA), Ghana and can safely be discharged without any adverse effect to the environment. The Biochemical Oxygen Demand, Total Suspended Solids, Nitrate and Faecal Coliforms removal efficiencies of the pond were 97.3%, 99.5%, 83.3% and 99.94% respectively. The wastewater management system was found to be effective and it is recommended to be introduced in all other parts of the country.
|Publication status||Published - 2012|