| 重金属对猪场废水厌氧消化蓄积抑制 |
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| 引用本文： | 孙建平,郑平,胡宝兰,余燚.重金属对猪场废水厌氧消化蓄积抑制[J].环境科学学报,2009,29(8):1643-1648. |
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| 作者姓名： | 孙建平 郑平 胡宝兰 余燚 |
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| 作者单位： | 1. 浙江大学,环境工程系,杭州,310029;浙江树人大学,生物与环境工程学院,杭州,310015
2. 浙江大学,环境工程系,杭州,310029 |
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| 基金项目： | 浙江省科技厅重大科技攻关项目 |
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| 摘 要： | 为了探明重金属离子在猪场废水厌氧消化中的蓄积抑制作用,用急性抑制试验法和蓄积抑制试验法,研究了Cu2+、Zn2+、Cr3+对厌氧消化的半抑制浓度和蓄积特性.结果表明,Cu2+、Zn2+、Cr3+对厌氧消化的半抑制浓度分别为1.26、1.79和2.10 mg·g+1(以VSS计),当Cu2+、Zn2+、Cr3+的浓度分别累积到1.92 mg·g-1,0.96 mg·g-1和2.24 mg·g-1(以VSS计)时,甲烷产生速率被抑制50%,说明Zn2+属于高度蓄积,Cu2+和Cr3+为明显蓄积.
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| 关 键 词： | 重金属 厌氧消化 急性毒性 蓄积抑制 |
| 收稿时间： | 10/2/2008 5:38:25 PM |
| 修稿时间： | 4/13/2009 6:37:28 PM |
Cumulative inhibition of heavy metals to anaerobic digestion of piggery wastewater |
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| SUN Jianping,ZHENG Ping,HU Baolan and YU Yi.Cumulative inhibition of heavy metals to anaerobic digestion of piggery wastewater[J].Acta Scientiae Circumstantiae,2009,29(8):1643-1648. |
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| Authors: | SUN Jianping ZHENG Ping HU Baolan and YU Yi |
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| Institution: | SUN Jianping1,2,ZHENG Ping1,HU Baolan1,YU Yi11. Department of Environmental Engineering,Zhejiang University,Hangzhou 3100292. College of Biology , Environmental Engineering,Zhejiang Shuren University,Hangzhou 310015 |
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| Abstract: | In acute toxicity tests,the half maximal inhibitory concentrations (IC50) of Cu2+,Zn2+,and Cr3+ on anaerobic digestion of piggery wastewater were 1.26 mg·g-1,1.79 mg·g-1,and 2.10 mg·g-1,respectively (based on volatile suspended solids,VSS). Chronic toxicity tests showed that the methane production rate was reduced by 50% when the concentrations of Cu2+,Zn2+,and Cr3+ were 1.92 mg·g-1,0.96 mg·g-1 and 2.24 mg·g-1 respectively (based on VSS),which indicated that the inhibitory effect of Zn2+ was highly accumulated,and the inhibitory effects of Cu2+ and Cr3+ were distinctly accumulated. |
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| Keywords: | heavy metal anaerobic digestion acute toxicity accumulative inhibition |
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