光催化氧化法处理石灰法草浆造纸废水

Treatment of Lime Grass Pulp Paper-making Wastewater by Photocatalytic Oxidation Process

采用光催化氧化法处理石灰法草浆造纸废水,考察了ZnO加入量、H2O2加入量、废水pH、光照时间与光照强度对废水COD去除率的影响。在ZnO加入量为3 g/L、H2O2加入量为14 g/L、pH为10.00的条件下,废水经功率500 W的低压汞灯照射8 h后,其COD为153.8 mg/L,COD总去除率可达90%以上。

Lime grass pulp paper-making wastewater was treated by the photocatalytic oxidation process. The effects of ZnO and H2O2 dosage, influent pH, radiation time and intensity on COD removal were examined. With the conditions of ZnO dosage 3 mg/L, H2O2 dosage 14 mg/L, influent pH 10.00, low potential lamp power 500 W and radiation time 8 h, the effluent COD is 154 mg/L with more than 90% of removal rate.