| Fe/C微电解-Fenton氧化联合处理垃圾渗滤液 |
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| 引用本文： | 李秋华,汪群慧.Fe/C微电解-Fenton氧化联合处理垃圾渗滤液[J].环境工程,2022,40(3):18-23. |
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| 作者姓名： | 李秋华 汪群慧 |
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| 作者单位： | 1. 北京科技大学 能源与环境工程学院, 北京 100083; |
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| 基金项目： | 国家重点研发计划(2018YFC19001003)；;广东省自然科学基金(2017A030313319)；;广东教育厅特色创新项目(2015KTSCX142)； |
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| 摘 要： | 采用Fe/C微电解-Fenton氧化联合工艺处理某固体废弃物处理企业填埋区的垃圾渗滤液,以降低其COD与浊度值,并去除渗滤液中的重金属离子。结果表明:当pH=4~5,铁炭复合材料投加量为30~40 g/L,曝气量为40 L/min,水力停留时间(HRT)为1 h时,微电解方法对垃圾渗滤液中的Ni2+、Cr(Ⅵ)、Pb2+的去除效果较好,其去除率分别达到 96%、97%和96%,垃圾渗滤液色度去除率为92.41%,COD去除率为62.33%,浊度由40.73NTU降至3.09 NTU,COD由579.2 mg/L降至218.16 mg/L。对微电解工艺出水进一步采用Fenton氧化工艺处理,结果表明:当Fe2+浓度为0.007 mol/L,氧化时间为90 min,n(H2O2):n(Fe2+)=1.2:1条件下,COD去除率为67.50%,浊度为53.20%,处理后的出水浊度为1.47 NTU、COD为69.49 mg/L,达到GB 18918-2002《城镇污水处理厂污染物排放标准》的二级排放标准。
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| 关 键 词： | Fe/C微电解 Fenton氧化 重金属 垃圾渗滤液 COD |
| 收稿时间： | 2020-07-05 |
ADVANCED TREATMENT OF SOLID WASTE LANDFILL LEACHATE BY A COMBINED PROCESS OF Fe/C MICROELECTROLYSIS-FENTON OXIDATION |
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| LI Qiuhua,WANG Qunhui.ADVANCED TREATMENT OF SOLID WASTE LANDFILL LEACHATE BY A COMBINED PROCESS OF Fe/C MICROELECTROLYSIS-FENTON OXIDATION[J].Environmental Engineering,2022,40(3):18-23. |
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| Authors: | LI Qiuhua WANG Qunhui |
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| Affiliation: | 1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China |
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| Abstract: | The late-stage waste infiltration fluid from the solid waste landfill in Jiangmen was treated by a combined process of Fe/C micro electrolysis-Fenton oxidation, to reduce COD, turbidity value and the concentration of heavy metal ions in the leachate. Results showed that under the condition of pH between 4 and 5, dosage of iron-carbon composite of 30~40 g/L, aeration volume of 40~60 L/min, the hydraulic retention time (HRT) of 1 hour, the removal rate of Ni2+, Cr(Ⅵ) and Pb2+ in waste leachate was 96%,97% and 96% respectively, the removal rate of the leachate turbidity and COD was 92.41% and 62.33% respectively, the turbidity decreased from 40.73 NTU to 3.09 NTU, and the COD decreased from 579.2 mg/L to 218.16 mg/L. In further Fenton oxidation treatment, research results showed that under the condition of Fe2+concentration of 0.007 mol/L, oxidation time of 90 min, n(H2O2):n(Fe2+)=1.2:1, the removal rate of the COD and turbidity was 67.50% and 53.20% respectively, the value of turbidity was 1.47 NTU, the value of COD was 69.49 mg/L, reaching the Rank Ⅱ limiting value of China's National Standard of Sewage discharge (GB18918-2002). |
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