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混合重金属对硝化颗粒污泥毒性作用的析因实验研究

Keywords: 硝化颗粒污泥,重金属,联合毒性,析因实验,响应曲面模型

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Abstract:

分别测定了Cu2+、Zn2+和Cd2+对硝化颗粒污泥的单一毒性,采用析因实验研究了二元和三元重金属混合体系对硝化颗粒污泥的联合毒性。结果表明,Cu2+、Zn2+和Cd2+的2h半抑制浓度EC50分别为95.23、62.11和12.48mg/L,由析因实验所得的响应曲面模型具有较好的优度(其R2>0.95),能够对混合体系的联合毒性很好地进行预测,析因实验可以用于环境领域混合体系联合毒性的研究。

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