某有机化工厂废水中水回用案例工艺及运行分析  

Process and Operation Analysis of a Case Study on Water Reuse in Organic Chemical Wastewater

作　　者：程材 Cheng Cai(Hangzhou Research Institute of China Coal Technology&Engineering Group,Hangzhou 311201,China)

机构地区：[1]中煤科工集团杭州研究院有限公司,浙江杭州311201

出　　处：《云南化工》2024年第4期132-134,共3页Yunnan Chemical Technology

摘　　要：采用“臭氧催化氧化+硝化反硝化生化系统+浸没式超滤+反渗透”组合工艺深度处理有机化工废水(该深化处理系统进水为预处理阶段的出水),实现废水的再回收利用。工程处理规模为360 m^(3)/d,其中生化部分出水COD平均值为79 mg/L,NH_(3)-N在0.1~0.8 mg/L之间,TN值稳定在15 mg/L左右,各指标均满足反渗透两倍浓缩要求(即浓水纳管排放标准);回用水水质COD≤5 mg/L,NH_(3)-N≤0.1 mg/L,Cl^(-)≤3.5 mg/L,电导率≤10μS/cm,pH 7.3~8.6,回用率≥50%,符合回用水水质及水量要求。实践表明,该深化处理中水回用系统运行稳定,既能达到企业节约水资源的目的,又能实现中水回用的要求。In order to realize the recycling of wastewater,the project adopted the combined process of“ozone catalytic oxidation+nitrification and denitrification biochemical system+submerged ultrafiltration+reverse osmosis”to deeply treat organic chemical wastewater,which was the outlet water in the pretreatment stage.The scale of engineering treatment was 360 m^(3)/d,the average value of COD of effluent from biochemical part was 79 mg/L,the NH_(3)-N was between 0.1-0.8 mg/L,the TN value was stable at about 15 mg/L,and all indicators met the concentrated water pipe discharge standard requirements of reverse osmosis double concentration.Reuse water quality:COD≤5 mg/L,NH_(3)-N≤0.1 mg/L,Cl^(-)≤3.5 mg/l,conductivity≤10μs/cm,pH 7.3~8.6,reuse rate≥50%,meeting the requirements of reuse water quality and quantity.The practice results showed that the deepening treatment of reclaimed water reuse system operated stably,which could not only achieve the purpose of saving water resources,but also meet the requirements of reclaimed water reuse.

关 键 词：有机化工 深度处理 反渗透 中水回用 

分 类 号：X703[环境科学与工程—环境工程] X752