混凝-Fenton深度处理印染废水反渗透浓水研究  

Study on the Advanced Treatment of Reverse Osmosis Concentrate from Printing and Dyeing Wastewater by Coagulation-Fenton

作　　者：谢康 文晨[1,2] 范云双 朱利杰[1] 侯晓伟 XIE Kang;WEN Chen;FAN Yunshuang;ZHU Lijie;HOU Xiaowei(School of Environmental Science and Engineering,Tianjin Polytechnic University;State Key Laboratory of Separation Membranes and Membrane Processes,Tianjin 300387,China)

机构地区：[1]天津工业大学环境科学与工程学院 [2]分离膜与膜过程国家重点实验室,天津300387

出　　处：《水处理技术》2020年第10期83-88,共6页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(51478314);横向课题项目(15-02103-0194)。

摘　　要：针对含低分子溶解性有机物的印染废水反渗透浓水(PDROC),研究采用混凝-Fenton组合法对其深度处理。结果表明,在混凝沉淀处理单元,当进水pH为5,选择聚合氯化铝和聚二烯二甲基氯化铵分别作为混凝剂与助凝剂,其投加量分别控制在180 mg/L与30 mg/L时,UV254和溶解性有机碳(DOC)去除率分别达到了48.9%和51.0%。在后续Fenton氧化单元,在DOC、H2O2的质量比为1/5.1,H2O2、Fe^2+的摩尔比为1/0.5,进水pH为3等优化条件下,其DOC去除率达到61.4%。组合工艺使PDROC中可溶性微生物产物和芳香族类物质被有效去除,且DOC的质量浓度从起初155.2 mg/L降至32.4 mg/L(COD为57.6 mg/L),达到GB 18918-2002一级B的排放标准。The coagulation-Fenton combination method was used for advanced treatment of reverse osmosis concentrate from printing and dyeing wastewater(PDROC)containing low molecular dissolved organic matter.The results showed that,The results showed that the removal rates of UV254 and dissolved organic carbon(DOC)reached 48.9%and 51.0%,respectively,in the coagulation and precipitation treatment unit,when the influent pH was 5 and the polyaluminum chloride and Poly(dienedimethylammonium chloride)were selected as coagulants and coagulant aids,and the dosage was controlled at 180 mg/L and 30 mg/L respectively.In the subsequent Fenton oxidation unit,the DOC removal rate reached 61.4%under the optimal conditions of m(DOC)/m(H2O2)=1/5.1,n(H2O2)/n(Fe^2+)1/0.5 and influent pH was 3.In this combined process,soluble microbial products and aromatic substances in PDROC were effectively removed,and mass concentration of DOC decreased from 155.2 mg/L to 32.4 mg/L(COD was 57.6 mg/L),reaching the first level B emission standard of GB 18918-2002.

关 键 词：印染废水 反渗透浓水 混凝 FENTON 溶解性有机物 聚二烯二甲基氯化铵 

分 类 号：X791[环境科学与工程—环境工程]