Production of Solid Composite Coagulant with Sulfate Fire Dregs and Application in Waste Water Treatment
YAN Qishe1,2, LI Mingyu2, MA Tongsen1, LI Guimin1, LIU Guoguang3(1. College of Chemistry and Chemical Engineering, Henan University, Henan Kaifeng 475001, China; 2. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;iversity, Henan Xinxiang 453000, China)
In this paper, the production of solid composite coagulant with sulfate fire dregs, sulfateacid and additive was studied. The time of reaction and the temperature of reaction affecting the stripping rate of ferric were investigated. When it is used to treat waste water, the removal rate of CODCr respectively attains to 75% and 80% when paper-making comprehensive waste water and domestic waste water are treated with solid composite coagulant which is obtained under the suitable reaction condition.