摘要
以池州市某城镇污水处理厂为例,采用原子荧光法、电感耦合等离子体发射光谱法分析了压滤污泥中Hg、Cd、As、Pb、Cr五种重金属元素的含量,分析了污泥重金属污染水平和潜在生态风险。结果表明:污泥中Hg、Cd、As、Pb、Cr均能检出,其含量排序为Cr>Pb>As>Cd>Hg;单因子污染指数最高者为Cd,达到轻度污染水平;污泥重金属综合污染指数为0.94,属于尚清洁水平;Cd的潜在生态风险水平较高,污泥重金属总潜在生态风险水平达到了中风险水平。
Taking an urban sewage treatment plant in Chizhou as an example,the contents of Hg,Cd,As,Pb,and Cr in filter-press sludge were analyzed by atomic fluorescence and ICP-AES.The pollution level and potential ecological risk were analyzed.The results showed that all the five heavy metals were detected in the sludge,and the order ranked from high concentration to low was Cr>Pb>As>Cd>Hg.The single-factor pollution index of Cd was the highest,which reached slightly polluted level.The heavy metal comprehensive pollution index of sludge was 0.94 which is moderately clean level.The potential ecological risk level of Cd was the highest.The total potential ecological risk level reached the medium risk level.
作者
方宇媛
韩光磊
许旻
潘龙
FANG Yuyuan;HAN Guanglei;XU Min;PAN Long(School of Materials and Environmental Engineering,Chizhou University,Chizhou 247000,China;Anhui Chizhou Jiuhua Power Generation Co.,Ltd.,Chizhou 247000,China;Environment Monitoring Station of Eco-Environment Sub-bureau,Guichi District,Chizhou 247000,China)
出处
《能源环境保护》
2021年第3期71-74,共4页
Energy Environmental Protection
基金
池州学院2018年校级自然重点项目(CZ2018ZRZ08)
安徽省大学生创新创业训练计划项目(202011306080)。
关键词
污泥
重金属
污染特征
潜在生态风险
Sludge
Heavy metal
Pollution characteristics
Potential ecological risk
