重金属捕集剂强化混凝处理制革废水的研究  

Research on the heavy metal trapping agent for the enhanced coagulation treatment of tannery wastewater

作　　者：张成凯[1,2] 郝亚超 胡栋梁 范庆玲 袁俊生[1,3,4] 尤秋彦[5] Zhang Chengkai;Hao Yachao;Hu Dongliang;Fan Qingling;Yuan Junsheng;You Qiuyan(Hebei University of Technology,Tianjin 300130,China;CenerTech Tianjin Chemical Research &Design Institute Co.,Ltd.,Tianjin 300131,China;Quanzhou Normal College,Quanzhou 362000,China;Engineering Research Center of Seawater Utilization of Ministry of Education,Tianjin 300130,China;Petroleum Engineering Research Institute of Dagang Oilfield Company,PetroChina,Tianjin 300282,China)

机构地区：[1]河北工业大学,天津300130 [2]中海油天津化工研究设计院有限公司,天津300131 [3]泉州师范学院,福建泉州362000 [4]海水资源高效利用化工技术部教育部工程研究中心,天津300130 [5]中国石油大港油田公司石油工程研究院,天津300282

出　　处：《工业水处理》2019年第4期41-44,共4页Industrial Water Treatment

基　　金：国家重点研发计划项目课题(2016YFB0600504);福建省技术产业创新项目(闽发改投资〔2015〕489号)

摘　　要：以某皮革企业排放的综合废水为研究对象,选取重金属捕集剂作为除铬沉淀剂,探讨捕集剂种类、添加量、体系pH、温度、絮凝剂与助凝剂添加量、沉降时间对除铬效果的影响。结果表明,LX-Y803的除铬效果最好,最佳投药量为90 mg/L,最佳pH为9,温度为50℃。添加絮凝剂和助凝剂强化沉降,结果表明,PAM最佳投加量为2.5 mg/L,助凝剂最佳投加量为0.2 mg/L,最佳沉降时间为15 min。最终,总铬去除率可达98.27%,有机铬去除率为97.08%,无机铬去除率为99.62%,处理后废水中的总铬为0.97 mg/L,达到GB 30486—2013《制革及毛皮加工工业水污染物排放标准》要求。The comprehensive wastewater discharged from a leather enterprise has been used as a research target,and the heavy metal trapping agent as chromium removing precipitant. The influences of trapping agent species,dosage,system p H,temperature,dosages of flocculants and coagulant aids,and setting time on the chromium removal effect have been discussed. The results show that the chromium removal effect of LX-Y803 is the best. Its optimal dosage is 90 mg/L,and the optimal pH 9 and the optimal temperature 50 ℃. The addition of flocculants and coagulant aids can enhance the setting effect. The results also show that the optimal dosage of PAM is 2.5 mg/L,dosage of coagulant aids 0.2 mg/L,and optimal setting time 15 min. Under these conditions,the total chromium removing rate reaches 98.27%,organic chromium removing rate reaches 97.08%,and inorganic chromium removing rate reaches 99.62%.The total chromium content in the treated wastewater is 0.97 mg/L,meeting the requirements specified in the Discharge Standard of Water Pollutants for Leather and Fur Making Industry(GB 30486—2013).

关 键 词：制革含铬废水 重金属 捕集剂 除铬 

分 类 号：X703[环境科学与工程—环境工程]