污染控制技术及原理
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
重金属对猪场废水厌氧消化蓄积抑制
- Cumulative inhibition of heavy metals to anaerobic digestion of piggery wastewater
- 基金项目：浙江省科技厅重大科技攻关项目(No.2005C13004)
- 作者
- 单位
- 孙建平
- 1. 浙江大学环境工程系, 杭州 310029; 2. 浙江树人大学生物与环境工程学院, 杭州 310015
- 郑平
- 浙江大学环境工程系, 杭州 310029
- 胡宝兰
- 浙江大学环境工程系, 杭州 310029
- 余燚
- 浙江大学环境工程系, 杭州 310029
- 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2.10mg·g-1(以VSS计),当Cu2+、Zn2+、Cr
- 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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