Coagulation Mechanism and Coagulant Development Status at Home and Abroad

Development of new coagulants or combination of various coagulants to enhance the coagulation process is a new problem faced by many present water treatment plants after implementation of the Water Quality Standards for Urban Water Supply(CJ/T 206-2005).Therefore,the coagulation theory,coagulant development and application status at home and abroad were analyzed systematically.It was brought forward that extraction of bio-coagulants, co-coagulation of combined coagulants and coagulation models based on the typing theory would be the trend of coagulation theory and coagulant development in the future.