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电极-SBBR处理含铜有机污水

Keywords: 电极,序批式生物膜反应器,

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Abstract:

采用电极-SBBR系统去除Cu2+,考察了电流强度IA、竞争离子(阴离子SO42-、NO3-、Cl-和阳离子Zn2+、Pb2+)、初始含Cu2+量及溶液pH值对除铜效除果的影响。结果表明,当电流强度为40mA时Cu2+去除率最高为98%。投加阴(SO42-、NO3-、Cl-)、阳(Zn2+、Pb2+)离子均会引起出水Cu2+浓度的增加,且Cl-和Pb2+含量分别为45mg/L和30mg/L时对Cu2+去除的影响更为显著。进水Cu2+浓度为30mg/L时,Cu2+去除率最高为98.48%,当进水Cu2+≥70mg/L时,出水Cu2+浓度不能达标。酸性(pH4.0~4.5)与碱性(pH9.0~10.0)条件均不利于Cu2+的去除,且酸性条件的负面影响更显著,当pH为4.5~7.5时,Cu2+去除率最高为97.78%。

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