太阳光Fenton法处理垃圾渗滤液中有机污染物

研究利用太阳光Fenton法处理垃圾渗滤液。根据太阳光辐射强度随时间的变化规律，选择重庆7、8月份的晴天，在中午12：00到下午14：00时进行试验，研究太阳光辐射时间、pH值、Fenton试剂用量对垃圾渗滤液COD去除率的影响。研究结果表明：太阳光Fenton法对垃圾渗滤液的COD有较好的去除效果，COD去除率达86.2%。太阳光Fenton法处理垃圾渗滤液的优化条件是：日光辐射时间为120 min，pH值为2.5，Fe²⁺浓度为5 mmol/L，H₂O₂浓度为570 mmol/L。同时，论文还对太阳光Fenton法处理垃圾渗滤液的动力学进行分析。研究结果显示：太阳光Fenton法处理垃圾渗滤液，其表观动力学方程为-dC/dt=2.6×10^-8×P^1.92×F^1.79×E^1.67。

Degradation of organic contaminant in landfill leachate by solar-Fenton process

The landfill leachate was treated by solar-Fenton process. All photocatalytic experiments were carried out under similar conditions on July or August sunny days between 12 a.m. and 14 p.m. in Chongqing based on the change of solar light intensity with time. The effects of operating conditions such as solar irradiation time,pH value and Fenton' s reagent dosage on COD removal were investigated. The experimental result indica-ted that solar-Fenton process can effectively remove COD and COD removal rate was attained 86. 2%. The opti-mal conditions found were solar irradiation time of 120 rain,pH value of 2. 5,Fe~(2+) concentration of 5 mmol/L and H_2O_2 concentration of 570 mmol/L. In solar-Fenton process,apparent kinetics equation of landfill leachate was - dC/dt = 2.6 × 10~(-8) × p~(1.92) × F~(1.79) × E~(1.67).