| Cu~(2+)、Zn~(2+)对生物脱氮系统的影响 |
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| 引用本文： | 荣宏伟,王勤,张朝升,张可方.Cu~(2+)、Zn~(2+)对生物脱氮系统的影响[J].环境工程学报,2009,3(4). |
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| 作者姓名： | 荣宏伟 王勤 张朝升 张可方 |
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| 作者单位： | 广州大学土木工程学院,广州,510006 |
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| 基金项目： | 国家自然科学基金，广东省科技攻关引导项目，广州市建设科技计划，广州市教育局科技计划，国家水体污染控制与治理科技重大专项基金 |
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| 摘 要： | Cu2+和Zn2+是污水处理工艺中经常遇到的金属离子.在驯化好的活性污泥系统中,研究了金属离子Cu2+和Zn2+在0～100 mg/L浓度下对活性污泥牛物脱氮系统的影响.试验发现Cu2+＞5 mg/L、Zn2+＞30 ms/L时,对硝化过程具有明显的抑制作用,在同样浓度的试验条件下Cu2+对硝化过程的抑制作用比Zn2+大.Cu2+≤0.5 mg/L时对反硝化过程具有一定的促进作用,有助于提高TN的去除效果;Cu2+＞0.5 mg/L时,对反硝化产牛抑制作用,随着浓度的增加,TN去除率逐渐下降.Zn2+不影响反硝化过程,仅在大于30 mg/L时,对硝化过程产生抑制作用.重金属Cu2+对生物脱氮系统的影响明显强于Zn2+.
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| 关 键 词： | 重金属 活性污泥 生物脱氮 促进 抑制 |
Effects of Cu~(2+) and Zn~(2+) on the biological nitrogen removal system |
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| Rong Hongwei,Wang Qin Zhang,Chaosheng,Zhang Kefang.Effects of Cu~(2+) and Zn~(2+) on the biological nitrogen removal system[J].Techniques and Equipment for Environmental Pollution Control,2009,3(4). |
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| Authors: | Rong Hongwei Wang Qin Zhang Chaosheng Zhang Kefang |
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| Affiliation: | School of Civil Engineering;Guangzhou University;Guangzhou 510006 |
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| Abstract: | Cu2+and Zn2+ are the most common metal ions in wastewater treatment process.In this paper,the effects of Cu2+and Zn2+ on the biological nitrogen removal system have been assessed for a range of metal ion concentration from 0 to 100 mg/L on the basis of good activated sludge system.When Cu2+ was more than 5 mg/L and Zn2+ was more than 30 mg/L,which was found to have inhibiting effect on biological nitrogen based on tests.Tests were performed on the same concentrations of ion,it was found that the inhibitory ... |
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| Keywords: | heavy metals activated sludge biological nitrogen removal promotion inhibition |
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