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废水闭路循环是解决电解锰废水污染问题的有效途径。通过对电解锰废水产生过程和水质水量的分析,确定削减废水水量和除去废水中铬是实现电解锰废水闭路循环的关键。为使电解锰废水闭路循环有更大的可操作空间,进行了15 mL/L和20 mL/L废水的回用实验,实验结果表明:电解液净化试剂H2O2、SDD消耗量和电流效率较无回用时差异不明显;电解过程中,无电解锰发黑、返溶等异常现象出现;电解产品符合YB/T 051—2003 DJMnD标准,纯度达99.9%以上。
Closed-loop wastewater is to solve the problem of electrolytic manganese wastewater pollution an effective way. Through the analysis of the process of producing electrolytic manganese wastewater and the analysis of water quality and quantity, it is determined that reducing the amount of wastewater and removing chromium in wastewater is the key to achieve closed circuit of electrolytic manganese wastewater. In order to make the manganese manganese wastewater closed-loop more operable space, 15 mL / L and 20 mL / L waste water reuse experiments were carried out. The experimental results show that the consumption of H2O2, SDD and current efficiency The difference is not obvious when it is reused. In the electrolysis process, the anomalous phenomena such as blackening and remelting of non-electrolytic manganese appear; the electrolysis products meet the standard of DJMnD of YB / T 051-2003 and the purity reaches more than 99.9%.