| 城市污泥中铜锌的化学形态及其去除 |
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| 引用本文： | 胡蓓蓓,王祖伟,王东启,陈振楼,王军,许世远.城市污泥中铜锌的化学形态及其去除[J].城市环境与城市生态,2007(3). |
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| 作者姓名： | 胡蓓蓓 王祖伟 王东启 陈振楼 王军 许世远 |
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| 作者单位： | 华东师范大学地理信息科学教育部重点实验室，天津师范大学城市与环境科学学院，华东师范大学地理信息科学教育部重点实验室，华东师范大学地理信息科学教育部重点实验室，华东师范大学地理信息科学教育部重点实验室，华东师范大学地理信息科学教育部重点实验室 上海200062 天津师范大学城市与环境科学学院，天津300387，天津300387，上海200062，上海200062，上海200062，上海200062 |
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| 摘 要： | 利用连续提取法研究了城市污泥中铜和锌的化学形态,结果表明:污泥中铜和锌都以稳定性较好的硫化物及有机结合物、残渣态形式存在,生物毒性较小,通过适当处理后可以安全加以利用;在此基础上,研究了利用乙酸和双氧水去除污泥中铜和锌的适宜工艺条件,结果表明:在室温条件下,在pH值为4的环境中,利用添加H_2O_2的浓度为2mol/L的乙酸溶液,反应时间为4h,就可以将污泥中超过95%以上的铜和锌淋滤去除。
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| 关 键 词： | 污泥 化学形态 连续提取法 乙酸-双氧水 铜锌去除 |
Chemical Forms and Removal of Copper and Zinc in Municipal Sludge |
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| HU Bei-bei.Chemical Forms and Removal of Copper and Zinc in Municipal Sludge[J].Urban Environment & Urban Ecology,2007(3). |
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| Authors: | HU Bei-bei |
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| Institution: | HU Bei-bei~ |
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| Abstract: | The chemical forms of copper and zinc in the municipal sludge were studied by the sequential extraction tech- nique.The copper and zinc existed stable in their forms of sulfide,organic combination and residual.There was only a little toxicity in the sludge.Therefore,the municipal sludge could be used as resources by proper treatments.Copper and zinc in the municipal sludge were extracted by acetic acid and H_2O_2.The detailed extractions were performed in 4.0 pH at room temperature in 4 hours.The perfect acetic acid concentration was 2mol/L.Under these conditions,more than 95% of copper and zinc were extracted. |
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| Keywords: | sludge chemical forms sequential extraction technique acetic acid-H_2O_2 removal of copper and zinc |
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