Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

于贺; 邱春生; 王晨晨; 节剑勇; 孙力平; 骆尚廉; 刘范嘉; 陈剑

doi:10.12030/j.cjee.201808165

环境工程学报

Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

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于贺, 邱春生, 王晨晨, 节剑勇, 孙力平, 骆尚廉, 刘范嘉, 陈剑. Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响[J]. 环境工程学报, 2019, 13(3): 725-731. doi: 10.12030/j.cjee.201808165

引用本文:

YU He, QIU Chunsheng, WANG Chenchen, JIE Jianyong, SUN Liping, LUO Shanglian, LIU Fanjia, CHEN Jian. Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge[J]. Chinese Journal of Environmental Engineering, 2019, 13(3): 725-731. doi: 10.12030/j.cjee.201808165

Citation:

YU He, QIU Chunsheng, WANG Chenchen, JIE Jianyong, SUN Liping, LUO Shanglian, LIU Fanjia, CHEN Jian. Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge[J]. Chinese Journal of Environmental Engineering, 2019, 13(3): 725-731. doi: 10.12030/j.cjee.201808165

Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

1.
天津城建大学环境与市政工程学院，天津 300384
2.
天津市水质科学与技术重点实验室，天津 300384
3.
河南省建筑设计研究院有限公司，郑州 450014
4.
台湾大学环境工程学研究所，台北 10673
5.
天津凯英科技发展股份有限公司，天津 300381
6.
天津九洲环境科技有限公司，天津 300300
基金项目:
国家自然科学基金资助项目51478291

天津市科技计划项目14ZCDGSF00032

天津市自然科学基金资助项目17JCTPJC51400国家自然科学基金资助项目(51478291)

天津市科技计划项目（14ZCDGSF00032）

天津市自然科学基金资助项目(17JCTPJC51400)

Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge

1.
School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2.
Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China
3.
Architectural Design and Research Institute of Henan Province Co.Ltd., Zhengzhou 450014, China
4.
Graduate Institute of Environmental Engineering, Taiwan University, Taipei 10673, China
5.
Tianjin Caring Technology Development Co.Ltd., Tianjin 300381, China
6.
Tianjin Jiuzhou Environmental Technology Co.Ltd., Tianjin 300300, China
Fund Project:

摘要: 针对生物淋滤处理城市污泥重金属Cr、As和Pd的溶出效率较低的问题，采用芬顿(Fenton)氧化法对城市污泥进行预处理，考察Fenton氧化对污泥中重金属Cr、As和Pd赋存形态转化及后继生物淋滤过程溶出率的影响。实验结果表明，经pH=4.00、Fe2+=1.00 g·L-1、H2O2=9 g·L-1的条件下Fenton预处理后，重金属Cr、As和Pb的存在形态均由稳定性较强的可氧化态和残渣态向不稳定的弱酸提取态和可还原态转化，其不稳定态比重分别由15%、30%、9%提高到了24%、41%、11%；生物淋滤实验结果显示，由于重金属形态变化，重金属Cr、As和Pb溶出率分别由52.71%、11.15%、33.19%提升至60.76%、24.32%、45.96%。Fenton预处理联合生物淋滤法提高了对重金属Cr、As和Pb的去除效果，有助于实现污泥的无害化处理处置。
- 城市污泥 /
- 生物淋滤 /
- Fenton氧化 /
- 重金属形态
Abstract: In order to improve the low dissolution efficiency of heavy metals (Cr, As and Pd) in municipal sludge by bioleaching, Fenton oxidation was used to pretreat the municipal sludge. The effects of Fenton oxidation on the species transformation of heavy metals Cr, As and Pd in the sludge and their dissolution efficiencies in subsequent bioleaching were investigated. The results showed that after the Fenton pretreatment under the conditions of pH=4.00, Fe2+=1.00 g·L-1 and H2O2=9 g·L-1, both the stable oxidized and residual species of heavy metals Cr, As and Pb partly transformed into the unstable acid extractable and reducible ones. And the ratios of unstable Cr, As and Pb species increased from 15%, 30% and 9% to 24%, 41% and 11%, respectively. The results of bioleaching experiments showed that the variations of heavy metal species led to the increase in the dissolution rates of Cr, As and Pb from 52.71%, 11.15% and 33.19% to 60.76%, 24.32% and 45.96%, respectively. Fenton pretreatment combined with bioleaching can improve the removal efficiency of Cr, As and Pb, and contribute to achieving the harmless treatment and disposal of sewage sludge.
- sewage sludge /
- bioleaching /
- Fenton oxidation /
- heavy metals speciation

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Citation:

YU He, QIU Chunsheng, WANG Chenchen, JIE Jianyong, SUN Liping, LUO Shanglian, LIU Fanjia, CHEN Jian. Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge[J]. Chinese Journal of Environmental Engineering, 2019, 13(3): 725-731. doi: 10.12030/j.cjee.201808165

Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

1. 天津城建大学环境与市政工程学院，天津 300384
2. 天津市水质科学与技术重点实验室，天津 300384
3. 河南省建筑设计研究院有限公司，郑州 450014
4. 台湾大学环境工程学研究所，台北 10673
5. 天津凯英科技发展股份有限公司，天津 300381
6. 天津九洲环境科技有限公司，天津 300300

基金项目:

国家自然科学基金资助项目51478291

天津市科技计划项目14ZCDGSF00032

天津市自然科学基金资助项目17JCTPJC51400国家自然科学基金资助项目(51478291)

天津市科技计划项目（14ZCDGSF00032）

天津市自然科学基金资助项目(17JCTPJC51400)

关键词:

摘要: 针对生物淋滤处理城市污泥重金属Cr、As和Pd的溶出效率较低的问题，采用芬顿(Fenton)氧化法对城市污泥进行预处理，考察Fenton氧化对污泥中重金属Cr、As和Pd赋存形态转化及后继生物淋滤过程溶出率的影响。实验结果表明，经pH=4.00、Fe2+=1.00 g·L-1、H2O2=9 g·L-1的条件下Fenton预处理后，重金属Cr、As和Pb的存在形态均由稳定性较强的可氧化态和残渣态向不稳定的弱酸提取态和可还原态转化，其不稳定态比重分别由15%、30%、9%提高到了24%、41%、11%；生物淋滤实验结果显示，由于重金属形态变化，重金属Cr、As和Pb溶出率分别由52.71%、11.15%、33.19%提升至60.76%、24.32%、45.96%。Fenton预处理联合生物淋滤法提高了对重金属Cr、As和Pb的去除效果，有助于实现污泥的无害化处理处置。

English Abstract

Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge

1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China
3. Architectural Design and Research Institute of Henan Province Co.Ltd., Zhengzhou 450014, China
4. Graduate Institute of Environmental Engineering, Taiwan University, Taipei 10673, China
5. Tianjin Caring Technology Development Co.Ltd., Tianjin 300381, China
6. Tianjin Jiuzhou Environmental Technology Co.Ltd., Tianjin 300300, China

Fund Project:

Keywords:

Abstract: In order to improve the low dissolution efficiency of heavy metals (Cr, As and Pd) in municipal sludge by bioleaching, Fenton oxidation was used to pretreat the municipal sludge. The effects of Fenton oxidation on the species transformation of heavy metals Cr, As and Pd in the sludge and their dissolution efficiencies in subsequent bioleaching were investigated. The results showed that after the Fenton pretreatment under the conditions of pH=4.00, Fe2+=1.00 g·L-1 and H2O2=9 g·L-1, both the stable oxidized and residual species of heavy metals Cr, As and Pb partly transformed into the unstable acid extractable and reducible ones. And the ratios of unstable Cr, As and Pb species increased from 15%, 30% and 9% to 24%, 41% and 11%, respectively. The results of bioleaching experiments showed that the variations of heavy metal species led to the increase in the dissolution rates of Cr, As and Pb from 52.71%, 11.15% and 33.19% to 60.76%, 24.32% and 45.96%, respectively. Fenton pretreatment combined with bioleaching can improve the removal efficiency of Cr, As and Pb, and contribute to achieving the harmless treatment and disposal of sewage sludge.

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Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge

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Fenton预处理对城市污泥重金属形态及生物淋滤溶出影响

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Influence of Fenton pretreatment on heavy metal speciation and bioleaching efficiency in municipal sludge

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