摘要
为了处理水性漆洗涤废水,对絮凝沉淀处理水性漆洗涤废水进行了研究。分别以硫酸铝(AS)、聚合氯化铝(PAC)、聚合氯化铝(PAFC)和聚合硫酸铁(PFS)4种无机絮凝剂为絮凝剂,考察了不同絮凝剂投加量、搅拌策略和时间以及沉降时间等因素对水性漆洗漆废水COD的去除率和剩余浊度的影响。为了研究几种絮凝剂对水性漆洗涤废水的絮凝机理,对废水和絮凝剂进行了Zeta电位分析。结合废水处理的成本和处理效率,确定了优化处理方案:最终选定PAFC作为絮凝剂,投加量为138 g·t^(-1),快速搅拌1 min,慢速搅拌1.5 min和沉淀60 min。
Coagulation is used to treat the paint effluent from the wooden toy factory. Using aluminum sulfate,poly aluminum chloride（ PAC）,poly aluminum ferrous chloride（ PAFC） and polymeric ferric sulfate（ PFS） as flocculating agents,with wastewater COD removal rate and residual turbidity as reference,we attempted to determine the optimal dosage of different flocculants,the mixing strategy for the coagulation process and the settling time for different flocculants. In order to study the coagulating mechanism,we analyzed the Zeta potential of wastewater and the flocculent. Considering the cost and efficiency of wastewater treatment,we ultimately selected PAFC as the flocculent with a dosing of 138 g·t^-1,fast mixing period of 1 min,slow mixing period of 1. 5 min and precipitation period of 60 min.
作者
李世阳
彭何军
胡拥军
王锋
刘峰
陈家元
安东
田光明
LI Shiyang PENG Hejun HU Yongjun WANG Feng LIU Feng CHEN Jiayuan AN Dong TIAN Guangming(College of Environmental ＆ Resource Science, Zhejiang University, Hangzhou 310058,China Environmental Monitoring Station of Yunhe, Lishui 323000, China School of Business, Macao University of Science and Technology, Macao 000853, China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第3期1587-1592,共6页
Chinese Journal of Environmental Engineering
关键词
絮凝剂
最佳投加量
搅拌策略
沉降时间
COD
剩余浊度
絮凝机理
coagulation
optimal dosage
mixing strategy
precipitation time
COD
residual turbidity
coagulating mechanism
