污水处理厂污泥重金属污染的生态风险评价模型研究

Study on Ecological Risk Assessment Model of Heavy Metal Pollution in Sewage Treatment Plant Sludge

部分行业的不规范处理导致污泥重金属污染逐渐加重,因此,有必要构建污水处理厂污泥重金属污染的生态风险评价模型,做好风险评价。其间需要确定评价参值比,建立生态风险评价模型的复合分析结构,利用潜在生态风险指数法构建生态风险评价模型。模型测试结果表明,其风险指数(RI)均值比传统方法低,风险评价效果更好。

Irregular treatment in some industries has led to the gradual increase of heavy metal pollution in sludge,therefore,it is necessary to construct an ecological risk assessment model for heavy metal pollution in sewage treatment plant sludge,and to do a good job in risk assessment.During this period,it is necessary to determine the ratio of evaluation parameters,establish a composite analysis structure of the ecological risk evaluation model,and use the potential ecological risk index method to construct an ecological risk evaluation model.The model test results show that the mean value of its risk index(RI)is lower than that of the traditional method,and the risk evaluation effect is better.