电极-SBBR处理含铜有机污水

采用电极一SBBR系统去除Cu^2＋,考察了电流强度,IA竞争离子（阴离子SO4^2-、NO3^-、CL^-和阳离子Zn^2＋、Ph^2＋）、初始含Cu^2＋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Cu^2＋去除率最高为98％。投加阴（SO4^2-、NO3^-、Cl^-）、阳（Zn^2＋、Pb^2＋）离子均会引起出水Cu^2＋浓度的增加,且Cl^-和Ph^2＋含量分别为45mg／L和30mg／L时对Cu^2＋去除的影响更为显著。进水Cu^2＋浓度为30mg／L时,Cu^2＋去除率最高为98．48％,当进水Cu^2＋≥70mg／L时,出水Cu^2＋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Cu^2＋的去除,且酸性条件的负面影响更显著．当pH为4．5～7．5时．Cu^2＋去除率最高为97．78％。

Treatment of sewage containing copper by electrode-SBBR

Electrode-SBBR system was used to investigate the effects of various factors on removal of copper ion such as current intensity (I_A), competing ions (SO₄^2-, NO₃^-, Cl^- and Zn²⁺, Pb²⁺), the initial Cu²⁺ concentration and pH. Results showed that the removal rate of Cu²⁺was up to 98% while the I_A was 40 mA. However, adding anions(SO₄^2-, NO₃^-, Cl^-) and cations(Zn²⁺, Pb²⁺) both increased the concentration of Cu²⁺ in effluent, and significant increases were observed while Cl^- and Pb²⁺ concentration were 45 mg/L and 30 mg/L, respectively. Additionally, with initial concentration of Cu²⁺ being 30 mg/L, the highest removal rate of Cu²⁺ was 98.48%; and concentration of Cu²⁺ in effluent failed to meet the standard while concentration of Cu²⁺ of influent exceeded 70 mg/L. Furthermore, the removal process was undermined both under acid (pH 4.0~4.5) and alkaline (pH 9.0~10.0) conditions, while the situation was worse in the former one. Under the condition of pH ranging from 4.5 to 7.5, removal rate of Cu²⁺ reached 97.78%.