电催化氧化法处理亚麻废水的研究

 以自制的Ti/SnO₂-Sb₂O₃/RuO₂/Ce和Ti/SnO₂-Sb₂O₃/α-PbO₂/β-PbO₂为阳极,采用掺Ru活性炭颗粒作电极间填充剂的三维电极法,电催化氧化处理经预处理后的亚麻废水.研究了填充剂的用量、支持电解质种类和浓度、体系温度、槽电压、电解时间等因素对废水化学耗氧量(COD)去除率的影响,确定了适宜反应条件.经先Ti基RuO₂类电极,后Ti基新型PbO₂电极的连续电解处理后效果为:COD,BOD₅质量浓度均达GB8978—1996二级排放标准,NH₃-N质量浓度达一级排放标准,亚麻废水COD总去除率为97.4%,电催化氧化阶段COD去除率达93.6%.

Study on electrocatalytic oxidation treatment of the fiber flax wastewater

Electrocatalysis-oxidative degradation of pretreated fiber flax wastewater was studied with three-dimension electrodes which were made of Ce/RuO₂/SnO₂-Sb₂O₃/Ti anode or β-PbO₂/α-PbO₂/SnO₂-Sb₂O₃/Ti anode and activated carbon carried with Ru.Various influence factors in relation to CODcr removal rate such as the mass ratio between activated carbon and wastewater,the kind and concentration of back-up electrolyte,operational temperature and time,applied voltage were examined.So the better reaction conditions were determined.After the continuous electrotreating with Ce/RuO₂/SnO₂-Sb₂O₃/Ti anode and β-PbO₂/α-PbO₂/SnO₂-Sb₂O₃/Ti anode the results showed that the CODcr and BOD₅ value of treated water could meet the 2nd wastewater discharge standard of GB 8978—1996 and the NH₃-N value could meet the 1st discharge standard.In addition,the total removal rate of CODcr could reach to 97.4% and the CODcr removal rate during electrocatalytic oxidation could reach to 93.6%.