Abstract:

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.

Key words: microwave, H₂O₂, dyeing wastewater, advanced oxidation

摘要：

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。

关键词: 微波, H₂O₂, 印染废水, 高级氧化

CLC Number: 

• X703