济南市区医院废水余氯含量

目的了解济南市医院排放废水中的余氯含量。方法2003年6-9月采集济南市区12家医院排放的废水,采用碘量滴定法测定医院排放废水中余氯的含量,并测定了废水中的粪大肠菌群。结果济南市区12家医院排放废水中余氯含量为3.7～128mg/L,平均为27.6mg/L。废水中的粪大肠菌群均<90个/L,符合国家标准。结论济南市区医院排放废水中余氯含量过高,对水环境会造成二次污染。

Investigation of Residual Chlorine Contents in Hospital Wastewater of Jinan Urban Areas

Objective To understand the contents of residual chlorine in the wastewater of 12 hospitals in the urban districts of Jinan. Methods Wastewater samples discharged from 12 hospitals were collected from June to September in 2003. The contents of residual chlorine in the wastewater samples were determined using iodometric titration method and the fecal coliform counts of the wastewater were determined. Results The contents of residual chlorine in the wastewater of 12 hospitals were 3.7 mg/L-128 mg/L with the average level of 27.6 mg/L. The result of the fecal coliform count in the wastewater was accorded with the National Hygienic Standard. Conclusion The contents of residual chlorine in the wastewater discharged from municipal hospitals in Jinan were too high, which might cause the secondary pollution to water environment.