微波强化催化H2O2处理印染生化出水及有机物去除

Degradation of biochemical treated effluent of dyeing wastewater and its organics removal by microwave-enhanced catalytic H2O2

采用微波强化催化H2O2的组合工艺处理印染废水生化处理出水,考察微波功率、温度、H2O2投加量及pH对反应效果的影响。最佳反应条件:微波输出功率为500 W、温度60℃、H2O2浓度为0.095 mol/L、水力停留时间18 min,此时COD去除率为79.89%。此外,在最佳反应条件下,采用XAD-8/XAD-4树脂联用技术分析进出水中疏水酸、非酸疏水物质、弱疏水物质及亲水物质的去除情况,结果表明,微波强化催化H2O2能有效去除这4类物质。

The biochemical treated effluent of dyeing wastewater is degraded by microwave enhanced catalytic H2O2 combined process,and the influences of microwave power,temperature,H2O2 dosage and initial pH on the reaction are investigated. The optimal reaction conditions are as follows:microwave output power of 500 W,temperature of 60 ℃,H2O2 concentration of 0.095 mol/L and hydraulic retention time of 18 min,the COD removal rate could reach 79.89%. In addition,under the optimal reaction conditions,the removal of hydrophobic acid,non-acid hydrophobic substance,weak hydrophobic substance and hydrophilic substance in the influent and effluent is analyzed by XAD-8/ XAD-4 resin combination technology. The results show that microwave-enhanced catalytic H2O2 could effectively remove these four kinds of substances.