焊条废乳化液治理的工艺研究及设计  

Technology research and design of emulsion wastewater treatment of welding electrode

作　　者：段云霞[1] 石岩 乔楠 Duan Yunxia;Shi Yan;Qiao Nan(Tianjin Academy of Environmental Science,Tianjin 300191,China;Tianjin Institute of Agriculture Resource and Environment,Tianjin 300381,China;Tianjin TisunIteace Technology Co.,Ltd.,Tianjin 300384,China)

机构地区：[1]天津市环境保护科学研究院,天津300191 [2]天津市农业资源与环境研究所,天津300381 [3]天津天一爱拓科技有限公司,天津300384

出　　处：《工业水处理》2020年第2期96-98,102,共4页Industrial Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07107-001-004)

摘　　要：对天津某焊条企业乳化液处理工艺进行改造,将现有的化学破乳改为生物强化破乳。将乳化废液和企业其他废水汇集形成综合废水,采用生物强化+水解酸化+接触氧化+MBR+炭滤+消毒组合工艺对其进行处理。运行结果表明,处理出水稳定达到《城市污水再生利用景观环境用水水质》(GB/T 18921-2002)的标准,出水部分回用到生产工艺中,其余回用于厂区景观水体。改造后整个工艺运行费用降低,环境和经济效益显著提高。The emulsion treatment process of a welding rod enterprise in Tianjin was reformed.The existing chemical demulsification was replaced by bioaugmentation demulsification.The emulsified waste liquid and other wastewater from enterprises were collected,and then the comprehensive wastewater was treated by the combined process of biological strengthening+hydrolytic acidification+contact oxidation+MBR+carbon filter and disinfection.The results showed that the treatment process was reliable and stable.The effluent had reached the national standard of"Water Quality of Landscape Environment Water for Urban Sewage Recycling"(GB/T 18921-2002),part of the effluent was reused to the production process,and the other part of the effluent was reused to the landscape water of the plant.After modification,the operation cost of the whole process was reduced,and the environmental and economic benefits were significantly improved.

关 键 词：乳化废液 破乳 生物强化作用 接触氧化 膜生物反应器 

分 类 号：X703.1[环境科学与工程—环境工程]