Fe/C微电解-Fenton氧化联合处理垃圾渗滤液

李秋华; 汪群慧

doi:10.13205/j.hjgc.202203004

Fe/C微电解-Fenton氧化联合处理垃圾渗滤液

doi: 10.13205/j.hjgc.202203004

李秋华^1,2,
汪群慧^1, ,

1. 北京科技大学能源与环境工程学院, 北京 100083;
2. 五邑大学生物科技与大健康学院, 广东江门 529020

基金项目:

广东教育厅特色创新项目(2015KTSCX142)

2017030100620016213)

广东省自然科学基金(2017A030313319)

江门市基础与理论研究科技计划项目(2016030100270007378

国家级大学生创新项目(2016年度)

国家重点研发计划(2018YFC19001003)

详细信息

作者简介:
李秋华(1979-),博士研究生,讲师,主要从事水污染控制与固体废物资源化研究。wyuchemLqh@126.com

通讯作者:
汪群慧(1959-),女,博士,教授,主要研究方向为固体废物的资源化与能源化、环境生物技术及污水处理。Wangqh@163.com

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出版历程
- 收稿日期: 2020-07-05
- 网络出版日期: 2022-07-07

ADVANCED TREATMENT OF SOLID WASTE LANDFILL LEACHATE BY A COMBINED PROCESS OF Fe/C MICROELECTROLYSIS-FENTON OXIDATION

LI Qiuhua^1,2,
WANG Qunhui^{1
, ,}

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

摘要

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。
- Fe/C微电解 /
- Fenton氧化 /
- 重金属 /
- 垃圾渗滤液 /
- COD
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).
- Fe/C micro-electrolysis /
- Fenton oxidation /
- heavy metal /
- landfill leachate /
- COD

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