典型混凝剂对汽车水性漆喷涂清洗废水超滤后浓缩液的处理效果  

Treatment Effect of Typical Coagulants on Concentrated Solution after Ultrafiltration of Automobile Waterborne Paint Spray Cleaning Wastewater

作　　者：陈帅 宫金宝 金星梅 江峰 赵文晋 张利文 CHEN Shuai;GONG Jin‐bao;JIN Xing‐mei;JIANG Feng;ZHAO Wen‐jin;ZHANG Li‐wen(China Faw Co.,Ltd.,Changchun 130011,China;Institute of Engineering Design,Army Academy,Nanjing 210018,China;Key Laboratory of Groundwater Resources and Environment,Ministry of Education,College of New Energy and Environment,Jilin University,Changchun 130012,China)

机构地区：[1]中国第一汽车股份有限公司,长春130011 [2]陆军研究院工程设计研究所,南京210018 [3]吉林大学新能源与环境学院,地下水资源与环境教育部重点实验室,长春130012

出　　处：《科技和产业》2021年第7期213-218,共6页Science Technology and Industry

摘　　要：为了达到减排增效的目的,通过对比CaCl_(2)、NaCl、CaSO_(4)3种无机混凝剂对4种汽车水性漆喷涂清洗废水超滤后浓缩液的处理效果,研究了混凝处理条件。结果表明:CaCl_(2)对清洗废水浓缩液具有较好的处理效果,混凝静置沉淀的最佳时间为30 min,其最佳投加量与形成废水时所用清洗溶剂类型有关,对含清洗溶剂1和清洗溶剂2的废水浓缩液而言,CaCl_(2)的最佳投加量分别为8%和2.5%,处理后上清液产出率为64%~93%,COD下降比例为43.2%~62.3%。In order to reduce emission and increase benefit,the treatment effects of CaCl_(2),NaCl and CaSO_(4)on 4 kinds of concentrated solution after ultrafiltration of automobile waterborne paint cleaning wastewater were studied to obtain coagulation treatment conditions.The results show that CaCl_(2)has a good treatment effect on the concentrated solution of cleaning wastewater.The optimum time for sedimentation after coagulation is 30 min.The optimum dosage of CaCl_(2)depends on the type of cleaning solvent used to form the wastewater.For concentrated wastewater containing cleaning solvent 1 and 2,the optimum dosage of CaCl_(2)was 8%and 2.5%,respectively.After treatment,the supernatant production rate was 64%to 93%and COD decreased by 43.2%to 62.3%.

关 键 词：无机混凝剂 水性漆 浓缩液 汽车喷涂 

分 类 号：X703.[环境科学与工程—环境工程]