Study on the Application of Coagulation and Sedimentation Process in Biochemical Pharmaceutical

Wei LUO

School of Basic Sciences, Tianjin Agricultural University, Tianjin, 300387, China

Abstract: As the biochemistry in the process of pharmaceutical production will produce waste water and

cause high degree of pollution, so this paper studies the applications of coagulation and sedimentation process

in wastewater treatment in biochemical pharmaceutical. In this paper, three kinds of inorganic macromolecule

coagulants were put into the prepared wastewater, and the removal rate of COD was observed. Then the best

effect of polyaluminum sulfate (PAS) was selected. COD removal rate and turbidity removal rate were analyzed

by different concentrations, and the effect of pH value on the electrical properties of colloidal particles

in wastewater was studied. The process can effectively reduce the process ｌｏａｄ, and help to improve water

quality.

Keywords: Coagulation sedimentation process; Biochemical pharmaceutical; Application