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[1] Hua Jia, Zhang Linsheng, Pan Yanli, Li Yuezhong, et al. H2S removal in landfill leachate treatment using UASB reactor [J]. Journal of Southeast University (English Edition), 2010, 26 (1): 91-95. [doi:10.3969/j.issn.1003-7985.2010.01019]
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H2S removal in landfill leachate treatment using UASB reactor()
UASB反应器处理垃圾渗滤液过程中的H2S去除
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
26
Issue:
2010 1
Page:
91-95
Research Field:
Environmental Science and Engineering
Publishing date:
2010-03-30

Info

Title:
H2S removal in landfill leachate treatment using UASB reactor
UASB反应器处理垃圾渗滤液过程中的H2S去除
Author(s):
Hua Jia1 Zhang Linsheng1 Pan Yanli2 Li Yuezhong2
1School of Energy and Environment, Southeast University, Nanjing 210096, China
2Wehrle Environmental Technology Co., Ltd., Changzhou 213022, China
华佳1 张林生1 潘艳丽2 李月中2
1东南大学能源与环境学院, 南京 210096; 2维尔利环境工程有限公司, 常州 213022
Keywords:
landfill leachate upflow anaerobic sludge blanket(UASB) H2S FeCl3 sulfur balance
垃圾渗滤液 升流式厌氧污泥床(UASB) H2S FeCl3 硫平衡
PACS:
X506
DOI:
10.3969/j.issn.1003-7985.2010.01019
Abstract:
Leachate from a sanitary landfill site in Chengdu, China is treated using a hybrid-UASB reactor at pilot scale. H2S, resulting from the anaerobic bioconversion process of sulfate-reducing bacteria(SRB), inhibits the growth and activity of methane-producing bacteria(MPB)and poses serious problems of pollution, so FeCl3is used for H2S removal. The results show that the system performs well in the treatment process. COD removal generally increases with the increase in the organic loading rate(OLR), while the sulfate removal decreases slowly. As the OLR is higher than 7 kgCOD/(m3·d), both COD and sulfate removal tend to be stable. When the reactor is operated at the design load of 9 kgCOD/(m3·d), COD and sulfate removal remain about 79% and 91%, respectively. At the same time, the percentage of COD removed by SRB(CODSRB)also decreases from 8.9% to 4.0%. With FeCl3 addition, COD removal increases to 83%, while sulfate removal and CODSRBfurther decrease to 89% and 1.89%, respectively. According to the mass balance, nearly 82% of the sulfur is prevented from converting into H2S. Moreover, when the FeCl3 dosage is more than 1.6 g/L leachate, H2S can be removed totally from the biogas. Therefore, the application of FeCl3 for H2S removal in leachate treatment using the UASB reactor is very suitable and viable.
以成都市某生活垃圾填埋场渗滤液为研究对象, 采用UASB反应器对其进行处理. 由于渗滤液中的SO2-4被硫酸盐还原菌(SRB)转化成H2S, 会造成污染并对厌氧反应中的产甲烷菌(MPB)产生抑制作用, 因此添加FeCl3溶液对H2S进行去除. 实验结果表明, 该工艺运行效果良好. 随着进水负荷(OLR)的增加, COD去除率逐渐增加而硫酸盐去除率则缓慢下降, 当OLR高于7 kgCOD/(m3·d)时, 二者趋于稳定. 当系统达到设计负荷 9 kgCOD/(m3·d)时, COD和硫酸盐的去除率分别稳定在79%和91%, SRB所去除的COD(CODSRB)也由启动初期的8.9%下降到4.0%. 添加FeCl3后, COD去除率上升并稳定在83%, 而硫酸盐的去除率和CODSRB则分别进一步降为89%和1.89%. 质量平衡显示, FeCl3去除了近82%的硫, 并且当FeCl3用量达到l.6 g/L时, 产气中的H2S被完全去除. 因此, FeCl3用于去除UASB处理垃圾渗滤液过程中产生的H2S是切实可行的.

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Memo

Memo:
Biographies: Hua Jia(1970—), male, graduate; Zhang Linsheng(corresponding author), male, professor, zhanglinsheng@seu.edu.cn.
Citation: Hua Jia, Zhang Linsheng, Pan Yanli, et al. H2S removal in landfill leachate treatment using UASB reactor[J]. Journal of Southeast University(English Edition), 2010, 26(1): 91-95.
Last Update: 2010-03-20