Cu2+和S2-对反硝化污泥的影响

蔡辰; 王宏杰; 董文艺

doi:10.12030/j.cjee.201511117

环境工程学报

Cu2+和S2-对反硝化污泥的影响

, ,

蔡辰, 王宏杰, 董文艺. Cu2+和S2-对反硝化污泥的影响[J]. 环境工程学报, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

引用本文:

蔡辰, 王宏杰, 董文艺. Cu2+和S2-对反硝化污泥的影响[J]. 环境工程学报, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

CAI Chen, WANG Hongjie, DONG Wenyi. Influence of Cu2+ and S2- on denitrifying activated sludge[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

Citation:

CAI Chen, WANG Hongjie, DONG Wenyi. Influence of Cu2+ and S2- on denitrifying activated sludge[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

Cu2+和S2-对反硝化污泥的影响

1.
哈尔滨工业大学深圳研究生院深圳市水资源利用与环境污染控制重点实验室, 深圳 518055
2.
哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090
基金项目:
深圳市技术研究开发计划（CXZZ20130319100941767）
中图分类号: X703

Influence of Cu2+ and S2- on denitrifying activated sludge

1.
Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China
2.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
Fund Project:

摘要: 电镀废水中含络合铜废水的处理主要采用硫化钠破络法，由于原水水质波动，硫化钠投加量难以准确控制，从而导致Cu2+或S2-残留，对后续生物段运行会产生一定的影响。然而，针对这2种离子对反硝化污泥的影响尚未见系统报道。通过小试实验，系统研究了Cu2+和S2-对反硝化污泥的毒性和抑制作用，并通过长期实验考察了反硝化污泥对这2种离子的耐受程度以及污泥性质的变化。结果表明，Cu2+和S2-对反硝化污泥活性的EC50分别为3.15 mg·L-1和14.71 mg·L-1，在相同质量浓度下，Cu2+比S2-具有更强的毒性。长期运行实验结果表明，反硝化污泥对S2-具有一定适应能力，最大承受浓度为20 mg·L-1，而Cu2+耐受能力较差，最大承受浓度仅为1 mg·L-1。同时，Cu2+的连续投加使反硝化污泥的沉降性和脱水性能变差，比阻增大，而S2-的存在对反硝化污泥的沉降性和脱水性能无明显影响。
- 反硝化 /
- 铜离子 /
- 硫离子 /
- 污泥性能
Abstract: The sodium sulfide method is a key treatment strategy for chelated-copper compounds in electroplating wastewater that is a too complicated process for the complete removal of these compounds,reducing such toxic residues as Cu2+ or S2-. Both of these ions affect biochemical processes,but data on the influences of Cu2+ and S2- on denitrifying activated sludge are relatively scarce,even though these ions may degrade the system performance. In this study,we compared the toxicities and inhibitions of Cu2+ and S2- on denitrifying activated sludge. Moreover,the tolerance of Cu2+ and S2- and the sludge properties were studied by performing long-term experiments. The results showed that the median effective concentrations (EC50) of Cu2+ and S2- for denitrifying activated sludge were 3.15 mg·L-1 and 14.71 mg·L-1,respectively. The observed cumulative effects indicated that the maximum tolerance concentration of S2- for denitrifying activated sludge was 20 mg·L-1 higher than that of Cu2+ (1 mg·L-1). Moreover,the precipitation and dewatering were hindered more by the accumulation of Cu2+ than by the accumulation of S2-.
- denitrification /
- copper ion /
- sulfide ion /
- performance of sludge

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[2]	JIANG Shuxian, FU Fenglian, QU Junxiong, et al. A simple method for removing chelated copper from wastewaters:Ca(OH)₂-based replacement-precipitation[J]. Chemosphere, 2008, 73(5):785-790
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蔡辰, 王宏杰, 董文艺. Cu2+和S2-对反硝化污泥的影响[J]. 环境工程学报, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

引用本文:

蔡辰, 王宏杰, 董文艺. Cu2+和S2-对反硝化污泥的影响[J]. 环境工程学报, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

CAI Chen, WANG Hongjie, DONG Wenyi. Influence of Cu2+ and S2- on denitrifying activated sludge[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1549-1554. doi: 10.12030/j.cjee.201511117

Citation:

Cu2+和S2-对反硝化污泥的影响

1. 哈尔滨工业大学深圳研究生院深圳市水资源利用与环境污染控制重点实验室, 深圳 518055
2. 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

收稿日期: 2015-11-30

基金项目:

深圳市技术研究开发计划（CXZZ20130319100941767）

关键词:

反硝化 /
铜离子 /
硫离子 /
污泥性能

摘要: 电镀废水中含络合铜废水的处理主要采用硫化钠破络法，由于原水水质波动，硫化钠投加量难以准确控制，从而导致Cu2+或S2-残留，对后续生物段运行会产生一定的影响。然而，针对这2种离子对反硝化污泥的影响尚未见系统报道。通过小试实验，系统研究了Cu2+和S2-对反硝化污泥的毒性和抑制作用，并通过长期实验考察了反硝化污泥对这2种离子的耐受程度以及污泥性质的变化。结果表明，Cu2+和S2-对反硝化污泥活性的EC50分别为3.15 mg·L-1和14.71 mg·L-1，在相同质量浓度下，Cu2+比S2-具有更强的毒性。长期运行实验结果表明，反硝化污泥对S2-具有一定适应能力，最大承受浓度为20 mg·L-1，而Cu2+耐受能力较差，最大承受浓度仅为1 mg·L-1。同时，Cu2+的连续投加使反硝化污泥的沉降性和脱水性能变差，比阻增大，而S2-的存在对反硝化污泥的沉降性和脱水性能无明显影响。

English Abstract

Influence of Cu2+ and S2- on denitrifying activated sludge

1. Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China
2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China

Received Date: 2015-11-30

Fund Project:

Keywords:

Abstract: The sodium sulfide method is a key treatment strategy for chelated-copper compounds in electroplating wastewater that is a too complicated process for the complete removal of these compounds,reducing such toxic residues as Cu2+ or S2-. Both of these ions affect biochemical processes,but data on the influences of Cu2+ and S2- on denitrifying activated sludge are relatively scarce,even though these ions may degrade the system performance. In this study,we compared the toxicities and inhibitions of Cu2+ and S2- on denitrifying activated sludge. Moreover,the tolerance of Cu2+ and S2- and the sludge properties were studied by performing long-term experiments. The results showed that the median effective concentrations (EC50) of Cu2+ and S2- for denitrifying activated sludge were 3.15 mg·L-1 and 14.71 mg·L-1,respectively. The observed cumulative effects indicated that the maximum tolerance concentration of S2- for denitrifying activated sludge was 20 mg·L-1 higher than that of Cu2+ (1 mg·L-1). Moreover,the precipitation and dewatering were hindered more by the accumulation of Cu2+ than by the accumulation of S2-.

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Cu2+和S2-对反硝化污泥的影响

Influence of Cu2+ and S2- on denitrifying activated sludge

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Cu2+和S2-对反硝化污泥的影响

English Abstract

Influence of Cu2+ and S2- on denitrifying activated sludge

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