A comparative study of UV-Fenton, UV-H2O2 and Fenton reaction treatment of landfill leachate
A comparative study of UV-Fenton, UV-H2O2 and Fenton reaction treatment of landfill leachate
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UV-Fenton、UV-H2O2和Fenton反应处理垃圾渗滤液的对比研究
DOI：
10.1080/09593330.2010.521953
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发表时间：
2011-01-01
影响因子：
2.8
通讯作者：
Ren, Bozhi
中科院分区：
文献类型：
--
作者：
Hu, Xiaolian;Wang, Xifeng;Ren, Bozhi
通过室内试验，比较了UV-芬顿、UV-H2 O2和芬顿试剂等几种H2 O2高级氧化工艺处理垃圾渗滤液的效果，以去除COD和提高渗滤液的可生化性（以BOD 5/COD比值评价）。结果表明，在温度25 ℃、pH 4.0、H2 O2浓度4000 mg L-1、Fe（II）浓度30 mg L-1（UV-芬顿和芬顿）、反应时间60 min的优化实验条件下，UV-芬顿体系对COD的去除率最高。H_2O_2基AOPs的COD去除率与H_2O_2浓度和pH值有很强的依赖性。温度对芬顿和类芬顿体系的总COD去除率影响不大。所有三个系统将导致在一个显着增加的BOD 5/COD的比率，从0.17到约0.60，在所施加的H2 O2剂量为4000毫克L-1。可生化性的提高表明，这些高级氧化工艺将有利于后续的生物处理工艺。UV-Fenton法被认为是最有效的方法，这些H2 O2为基础的高级氧化工艺，以提高可生化性和消除颜色的渗滤液。
In this study, laboratory experiments were conducted to compare the efficacy of several H2O2-based advanced oxidation processes (AOPs): UV-Fenton, UV-H2O2, and Fenton reagent, to treat landfill leachate with the objective of removing COD and improving the leachate's overall biodegradability (evaluated in terms of BOD5/COD ratio). The results indicated that, at optimized experimental conditions of 25 degrees C, pH 4.0, 4000 mg L-1 H2O2, 30 mg L-1 Fe(II) (for UV-Fenton and Fenton ) and 60 min reaction time, the UV-Fenton system showed the highest COD removal. The COD removal rate in the H2O2-based AOPs was strongly dependent on the concentration of H2O2 and the pH value. Temperature had little effect on overall COD removal rate in the Fenton and Fenton-like systems. All three systems would result in a significant increase in the ratio of BOD5/COD, from 0.17 to about 0.60, at the applied H2O2 dosage of 4000 mg L-1. The increase in biodegradability of the AOP leachate indicates that these AOPs would be beneficial for the subsequent biological treatment process. The UV-Fenton process was found to be the most effective approach of these H2O2-based AOPs to enhance the biodegradability and eliminate the colour of the leachate.