TEST PROCESSING WASTEWATER HOSPITAL UNIVERSITY CLINICS OF KINSHASA BY THE PROCESS OF STABILIZATION COUPLED TO BIOFILTRATION

Abstract

The juice that percolates through the hospital sewage and that loads of pollutants must be eliminated. Our study contributes to the establishment of a purification system of hospital wastewater was expensive and effective. The process (stabilization coupled to bio filtration) involves aquatic plants such as Azolla and sand filtration. It thus improves the drainage conditions of the hospital effluents by dramatically reducing the pollution load. This technique decreases and lowers the organic filler according to the conditions imposed. The bio filtration has a specific behavior with respect to the leachate and increases the purification performance of wastewater. So by applying this technique, our study shows a reduction of 77.4% of the chemical oxygen demand (COD), 68.6% of turbidity, 94% of nitrates and phosphates 95% for a residence time of 8 am in the lagoon. This technics following the filter coupling shows a reduction of pathogenic microorganisms. The lagoon level the concentration of organic matter (OM), nitrogen and phosphorus decreased. This study is an important step in the design of a wastewater treatment plant wastewater university clinics in Kinshasa, DRC.