Fenton氧化法深度处理制革废水生化出水试验研究

摘要

采用Fenton氧化法深度处理以制革废水为主的园区生化处理出水,试验表明:影响Fenton氧化的因素从大到小依次为H2O2投加量、Fe2+浓度、pH、反应时间.当进水CODCr平均为116.6 mg/L时,在H2O2投加量50 mmol/L、Fe2+投加量10 mmol/L、pH为3、反应时间60 min的最佳条件下,出水CODCr平均为31.7 mg/I；在H2O2投加量25 mmol/L、Fe2+投加量7.5 mmol/L、pH为5、反应时间40 min的经济运行条件下,出水CODCr平均为46.6 mg/L.经济条件下的运行成本比最佳条件下的运行成本可节约2.3元/m3.%Fenton oxidation was applied for advanced treatment of bio - treated tannery wastewater. The results showed: the influential factors of Fenton oxidation process, from weak to strong, were H2O2 dosage, Fe2+ concentration, pH, and reaction time in order. When the influent mean CODCr concentration was 116. 6 mg/L, under the optimized operation condition of H2 O2dosage 50 mmol/L, Fe2+ dosage 10 mmol/L, pH 3, and reaction time 60 minutes, the mean CODCr in effluent was 31. 7 mg/L, while under the operation condition of H2O2 dosage 25 mmol/L, Fe2+ dosage 7. 5 mmol/L, pH 5, and reaction time 40 minutes, the mean CODCr in effluent was 46. 6 mg/L. In economical operation condition with optimized operation cost ratio, the operation cost could be saved by 2. 3 Yuan/m3.