Dyeing wastewater treatment with a complex adsorption-coagulation agent  

作　　者：赵庆健 刘俊良 赵庆良 刘志刚 

机构地区：[1]School of Municipal and Environmental Engineering Harbin Institute of Technology, Harbin 150090, China [2]Hebei Construction Engineering Institute, Zhangjiakou 075024, China

出　　处：《Journal of Harbin Institute of Technology(New Series)》2005年第5期517-520,共4页哈尔滨工业大学学报（英文版）

摘　　要：To remove effectively the pollutants from printing and dyeing wastewater, a new complex adsorption-coagulation agent was developed and employed in dyeing wastewater treatment. The experimental results showed that better removals of COD, turbidity and color could be efficiently realized under the operating conditions of mixing at 150 r/min, reacting within 5 min and dosing at 15 g/L and 20 g/L, respectively. Combined with the settled sludge, the agent could be recycled for further adsorption and coagulation within 10 times. Compared to the conventional coagulants, the newly-developed agent had such merits as suitability for wide pH range of wastewater, less sludge production, reutilization of the condensed sludge and low operation cost.To remove effectively the pollutants from printing and dyeing wastewater, a new complex adsorptioncoagulation agent was developed and employed in dyeing wastewater treatment. The experimental results showed that better removals of COD, turbidity and color could be efficiently realized under the operating conditions of mixing at 150 r/min, reacting within 5 min and dosing at 15 g/L and 20 g/L, respectively. Combined with the settled sludge, the agent could be recycled for further adsorption and coagulation within 10 times. Compared to the conventional coagulants, the newly-developed agent had such merits as suitability for wide pH range of wastewater, less sludge production, reutilization of the condensed sludge and low operation cost.

关 键 词：adsorption-coagulation agent printing and dyeing wastewater brine sludge sludge recycle 

分 类 号：X703[环境科学与工程—环境工程]