日光/H_2O_2/草酸铁体系对垃圾渗滤液深度处理的试验研究

Study on the treatment of landfill leachate by solar/H_2O_2/ferric oxalate

以草酸铁络合物/H2O2作光氧化剂,利用日光对垃圾渗滤生化出水进行了光氧化降解试验。结果表明,在溶液的初始体系pH=3.0,H2O2投加量为460mg/L,Fe3+质量浓度为20mg/L条件下,反应60min后,CODCr去除率可达80%以上;溶液初始体系的pH、H2O2和Fe3+的投加量及废水的水质对光解过程有显著影响,而且在太阳光照射下,CODCr去除率比紫外光照射下高。研究表明,在一定试验条件下,用日光/H2O2/草酸铁体系对城市垃圾渗滤液处理效果较好,可作为垃圾渗滤液的深度处理。

Ferric oxalate complexes and H2O2 as photooxidative was used to degrade the landfill leachate under solar irradiation. The results indicate that under the initial conditions of pH 3.0, H2O2 460 mg/L and Fe 3+20 mg/L, the removal of COD Cr can reach over 80% in 60 minutes. It is found that the initial pH of the solution and the concentrations of H2O2 and Fe 3+ and the quality of wastewater have significant effect in this photooxidative process. The removal of COD Cr is higher under solar irradiation than under UV irradiation, and the research shows that under the selected conditions, using solar/H2O2/ferric oxalate complexes to treat the landfill leachate has better efficiency, and it can be used as advanced treatment.