生化+高级氧化技术深度处理电镀废水  

Biochemical and Advanced Oxidation Technology for Electroplating Wastewater Deep Treatment

作　　者：张宝 施帅帅 ZHANG Bao;SHI Shuaishuai(Shanghai Haimu Environment Engineering Co.Ltd,Shanghai 201400,China)

机构地区：[1]上海海姆环境工程有限公司,上海201400

出　　处：《水处理技术》2019年第8期130-132,共3页Technology of Water Treatment

摘　　要：为达到上海DB 31/199-2009的A级标准,即电镀废水出水总Ni的质量浓度不得高于0.1 mg/L的要求,分析了上海金山区某电镀厂废水来源及目前处理工艺,认为影响总Ni的去除主要原因是电镀废水中络合剂,采用了在原有处理系统末端增加生化AO+微电解+Fenton工艺深度的处理方法。试运行结果表明,电镀废水中COD、TN、总Ni的去除率分别超过80%、53%、66%,其中镍系统和综合系统出水中总Ni含量均达到了DB 31/199-2009的A级标准。相比直接采用Fenton处理废水达到相同效果,生化A/O与微电解可以减少70%~80%的H2O2的用量,从而降低了运行成本。In order to meet the A level standard of DB 31/199-2009 in Shanghai, that is the total Ni mass concentration in effluent of electroplating wastewater cannot higher than 0.1 mg/L. The source of electroplating wastewater and the current treatment process of an electroplating plant in Jinshan District, Shanghai was analyzed, and concluded that the total Ni removal was affected by the complexing agent in electroplating wastewater. The method of adding biochemical AO/microelectrolysis/ Fenton process at the end of the original treatment system was used. The commissioning results showed that, the removal rate of COD, TN and total Ni in electroplating wastewater exceeds 80%, 53 % and 66 % respectively, the effluent Ni content in Ni system and synthetic system reached the A level standard of DB 31/199-2009. Compared to Fenton direct treatment method which has same treatment efficiency, H2O2 dosage was reduce by 70 %~ 80 % with biochemical AO and microelectrolysis, thereby the operation cost was reduced.

关 键 词：电镀废水 生化 高级氧化 络合剂 

分 类 号：X781.1[环境科学与工程—环境工程]