活性炭CWPO法处理转运站垃圾渗滤液

CWPO Treatment of Transfer Station Leachate With Activated Carbon as Catalyst

为了研究催化湿式过氧化氢氧化(catalytic wet peroxide oxidation,CWPO)法对渗滤液的处理效果,以颗粒活性炭为催化剂,对转运站的垃圾渗滤液进行处理.分别研究了反应温度、反应时间、催化剂添加量、H_2O_2添加量和初始pH对处理效果的影响,并采用紫外-可见光谱以及三维荧光光谱对水样中溶解性有机物进行分析.研究结果表明:当温度为200℃,反应时间为120 min,催化剂添加量4 g/L,氧化剂添加量n(COD)∶n(H_2O_2)为1∶1.8,初始pH为7时,出水COD去除率达到85.02%.同时,含有芳香环、双键和羰基共轭体系的有机物去除效果显著.

In order to study the treatment effect of catalytic wet peroxide oxidation( CWPO),the CWPO was applied to deal with the leachate in transfer station with granular activated carbon as the catalyst. The effect of operating conditions were investigated,namely reaction temperature,reaction time,hydrogen peroxide concentration,dosage of catalyst and initial pH. The dissolved organic matter( DOM) of the sample was analyzed by UV-vis spectra and three-dimensional fluorescence spectra( 3DEEM). The results show that on the condition of reaction temperature at 200 ℃,the reaction time at 120 min,1. 8 of the equivalence ratio of H_2O_2,catalyst concentration at 4 g /L,initial pH at 7,the removal rate of the COD reaches 85. 02%. Meanwhile,the organic matters which contain aromatic nucleus and the conjugate system of double bond and carbonyl can be removed effectively.