Effect of Sewage Chloridizing Disinfection in Hospitals
[ Objective]To understand the effect of swage chloridizdng disinfection in the hospitals of Heping District of Tianjin. [Methods] Sewage samples discharged from 14 hospitals were collected and monitored quarterly from 2003 to 2005. The contents of residual chlorine in the sewage samples were determined with iodometric titration method and the fecal coliform counts of the sewage were determined using multi - tubes fermentation method. [ Results ] The contents of residual chlorine in the sewage of 14 hospitals were 3.1 ~ 86.9 mg/L with an average level of 13.1 mg/L; the fecal coliform counts in the treated sewage were less than 20 cfu/L, which accorded with the National Standard for Sewage Discharge (GB 8918 - 1996). [Conclusion]The contents of residual chlorine in the sewage discharged from 14 hospitals in Heping district Tianjin were rather high, which might cause secondary water pollution; great emphasis should be put on the solution to this problem.
NETL
NSTL
万方数据
维普
