Production and Coagulating Condition Research of Microbial Flocculants
微生物絮凝剂的研制及其絮凝条件

Microbes which can produce bio coagulants were isolated from activated sludge of the Quyang Wastewater Works and also from the settlings of the Yujing Creek.Several kinds of polluted waters such as kaolin suspension can be purified efficiently by the use of the bio coagulants produced in this research.Coagulation can be apparently improved when using calcium oxide as the coagulating aid. The excellent bio coagulants can be produced when a 72 hour's continued cultivation was performed.In the process of bio coagulant's isolation,a proper centrifugal conditions was suggested because too strong centrifugation may result obvious decrease in the coagulating efficiencies.