Title :
Study on Advanced Processing of Coking Wastewater Using Different Coagulants
Author :
Yi, Zheng ; Zhuo, Zhang ; Haiying, Zhang ; Hongtao, Hu ; Xialiang, Wei
Author_Institution :
Dept. of Chem. Eng., Shanghai Inst. of Technol., Shanghai, China
Abstract :
In this study, coking wastewater was treated using different coagulants to make it meet requirements of the secondary standard described in ldquoIntegrated wastewater discharge standardrdquo. Coagulation using PFS and PAC respectively was performed to study effect of coagulant dosage, and pH on removal ratios of colority, CODcr and turbidity. It is found that optimum dosage and pH are 50 mg/L and 6 for PFS, and 75 mg/L and 8 for PAC. All effluent quality after coagulation at the optimum conditions meet requirements of the secondary standard described in ldquoIntegrated wastewater discharge standardrdquo. Coagulation using PAC at the optimum conditions are recommended for advanced treatment of coking wastewater.
Keywords :
aluminium compounds; coagulation; coke; effluents; iron compounds; wastewater treatment; AlCl3; Fe2(SO4)3; PAC coagulant; PFS coagulant; coagulant dosage effects; coagulants; coagulation; coking wastewater processing; coking wastewater treatment; effluent quality; integrated wastewater discharge standard; pH effects; polyaluminiumchloride coagulant; polyferric sulphate coagulant; Chemical engineering; Chemical technology; Coagulation; Effluents; Fault location; Hydrodynamics; Iron; Steel; Wastewater treatment; Water resources; advanced processing; coagulant; coking wastewater; hydrodynamic condition; reaction time;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.34
