锂电池生产废水处理及中水回用工程实例
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摘要
采用电絮凝-混凝-AAO法-MBR-反硝化滤池-硝化滤池-清水池组合工艺初步处理某新能源公司锂电池生产废水后,再使用超滤-反渗透工艺对该废水进行深度处理以达到回用目的。工程实际运行结果表明,一级RO出水COD为20 mg/L,NH_3-N、TN、TP的质量浓度分别为0.77、14.8、0.06 mg/L,pH为7.2,SS未检出,水质满足GB/T19923-2005中敞开式循环冷却水系统补充水标准的要求,可直接回用;二级RO出水COD为17 mg/L、NH_3-N、TN、TP的质量浓度分别为0.42、11.6、0.03 mg/L,pH为6.7,SS未检出,水质达到GB 3838-2002的IV类标准和GB30484-2013的表3新建企业水污染物排放限值的直接排放标准。水处理运行费用共计46.56元/m~3。
After the preliminary treatment of a new energy company's lithium battery production wastewater by electroflocculation/coagulation/AAO/MBR/denitrification filter/nitrification filter/clearing tank process,the wastewater was further treated using an ultrafiltration/reverse osmosis process to reach reuse purposes.The actual operation results of the project showed that,the COD,mass concentration of NH_3-N,TN and TP in first-stage RO effluent was 20 mg/L,0.77,14.8 and 0.06 mg/L,respectively,pH was 7.2 and SS was not detected,the water quality met the requirements of the supplementary water standard for the open circulating cooling water system of GB/T 19923-2005,and could be directly reused.The COD,mass concentration of NH_3-N,TN and TP in secondary RO effluent was 17 mg/L,0.42,11.6 and 0.03 mg/L,respectively,p H was 6.7 and SS was not detected,The water quality reached the Class IV standard of GB 3838-2002 and the direct emission standards for new enterprise water pollutant discharge limits in Table 3 of GB 30484-2013.The total water treatment cost was 46.56 yuan/m~3.
After the preliminary treatment of a new energy company's lithium battery production wastewater by electroflocculation/coagulation/AAO/MBR/denitrification filter/nitrification filter/clearing tank process,the wastewater was further treated using an ultrafiltration/reverse osmosis process to reach reuse purposes.The actual operation results of the project showed that,the COD,mass concentration of NH_3-N,TN and TP in first-stage RO effluent was 20 mg/L,0.77,14.8 and 0.06 mg/L,respectively,pH was 7.2 and SS was not detected,the water quality met the requirements of the supplementary water standard for the open circulating cooling water system of GB/T 19923-2005,and could be directly reused.The COD,mass concentration of NH_3-N,TN and TP in secondary RO effluent was 17 mg/L,0.42,11.6 and 0.03 mg/L,respectively,p H was 6.7 and SS was not detected,The water quality reached the Class IV standard of GB 3838-2002 and the direct emission standards for new enterprise water pollutant discharge limits in Table 3 of GB 30484-2013.The total water treatment cost was 46.56 yuan/m~3.
引文
[1]肖成伟,汪继强.电动汽车动力电池产业的发展[J].科技导报,2016(6):74-83.
[2]郭富成,李瀚翔,张黎明,等.锂电池生产废水处理站提标改造工程[J].中国给水排水,2016,32(10):111-115.
[3]城市污水再生利用工业用水水质:GB/T 19923-2005[S].
[4]地表水环境质量标准:GB 3838-2002[S].
[5]电池工业污染物排放标准:GB 30484-2013[S].
[6]刘云鹏.电絮凝在水处理中的研究进展[J].城市建设理论研究:电子版,2016,6(8).
[7]李艳,朱水平,马晓云,等.电絮凝工艺及其在难降解有机废水处理中的研究进展[J].江苏科技大学学报(自然科学版),2014,28(1):77-81.
[2]郭富成,李瀚翔,张黎明,等.锂电池生产废水处理站提标改造工程[J].中国给水排水,2016,32(10):111-115.
[3]城市污水再生利用工业用水水质:GB/T 19923-2005[S].
[4]地表水环境质量标准:GB 3838-2002[S].
[5]电池工业污染物排放标准:GB 30484-2013[S].
[6]刘云鹏.电絮凝在水处理中的研究进展[J].城市建设理论研究:电子版,2016,6(8).
[7]李艳,朱水平,马晓云,等.电絮凝工艺及其在难降解有机废水处理中的研究进展[J].江苏科技大学学报(自然科学版),2014,28(1):77-81.
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