典型重金属对厌氧氨氧化污泥的短期影响

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• 论文作者：余诚 ; 柴立元 ; 唐崇俭 ; 宋雨夏 ; 段程珊
• 年：2016
• 作者机构：中南大学冶金与环境学院;国家重金属污染防治工程技术研究中心;
• 论文关键词：厌氧氨氧化 ; 重金属 ; 批次试验 ; 抑制
• 会议召开时间：2016-12-01
• 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
• 语种：中文
• 分类号：X703
• 学会代码：HJKP
• 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
• 会议地点：中国福建厦门
• 主办单位：中国环境科学学会
• 学会名称：中国环境科学学会
• 页数：7
• 文件大小：1775k
• 原文格式：D
• 会议级别：全国

摘要

通过批次试验研究了Cd(Ⅱ)、Hg(Ⅱ)、Pb(Ⅱ)、As(Ⅲ)及Cr(Ⅵ)对厌氧氨氧化(Anammox)的短期影响。使用非竞争抑制模型拟合数据得到各金属离子的半抑制浓度值(IC_(50))依次为:Cd(Ⅱ)-7.00 mg/L、Hg(Ⅱ)-2.33 mg/L、Pb(Ⅱ)-10.40 mg/L、及Cr(Ⅵ)-9.84 mg/L。对于As(Ⅲ),其在批次试验中对Anammox的抑制并不明显,即使在最高浓度60 mg/L比厌氧氨氧化活性(SAA)仅下降29.67%,并未超过50%,难以得到IC50。测定了溶液和污泥中重金属离子的含量,结果表明Anammox污泥有一定的重金属截留能力,这可能是Anammox活性抑制的关键因素。

引文

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