生化法处理电镀废水工程改造实践  

PROJECT MODIFICATION PRACTICE ON THE TREATMENT OF ELECTROPLATING WASTEWATER IN BIOLOGICAL PROCESS

作　　者：郑钊[1] 方承启 张钰靓 裘建平[1] 

机构地区：[1]金华职业技术学院制药与材料工程学院,浙江金华321007 [2]兰溪市卓越电子有限公司,浙江兰溪321100 [3]杭州市市区河道整治建设中心,浙江杭州310009

出　　处：《水处理技术》2015年第2期131-134,共4页Technology of Water Treatment

摘　　要：根据电镀废水特点,采用分质混凝沉淀-氧化-还原+AAO+沸石吸附工艺进行处理。通过手自动加药控制系统、混合沉淀池前加设破氰沉淀处理以及终沉池污泥回流至混合沉淀池的改造。实际运行结果表明,经改造后系统运行稳定,出水COD和Cu2+、Ni2+、总Cr、Cr6+、CN-的质量浓度分别为58mg/L和0.12、0.09、0.699、0.175、0.052mg/L,均达到GB21900-2008排放标准。According to the characteristics of electroplating wastewater, the process of coagulation, sedimentation, oxidation, reduction, AAO biological technology plus adsorption of zeolite was applied to treat this wastewater. The modification process was finished by manual dosing unit, setting breaking Cyanide before mixed sedimentation basin and recycling sludge from final clarifier to mixed sedimentation basin. The results showed that the modified process had a property of stable efficiency. The average COD and mass concentration ofCu^2＋, Ni^2＋, TCr, Cr^6＋ and CN in the effluent were 58, 0.12, 0.09, 0.699, 0.175, and 0.052 mg/L, respectively. The effluent quality achieved the standard of GB 21900-2008.

关 键 词：电镀废水 生化 改造 

分 类 号：X781.1[环境科学与工程—环境工程]