Waste water disinfection during SARS epidemic for microbiological and toxicological control.
- Author:
Chao CHEN
1
;
Xiao-Jian ZHANG
;
Yun WANG
;
Ling-Xia ZHU
;
Jing LIU
Author Information
- Publication Type:Journal Article
- MeSH: Acetates; analysis; metabolism; Ammonia; analysis; metabolism; Animals; Bacteria; drug effects; isolation & purification; China; Chlorine; pharmacology; Chlorine Compounds; pharmacology; Disinfectants; pharmacology; Disinfection; methods; Dose-Response Relationship, Drug; Enterobacteriaceae; drug effects; isolation & purification; Environmental Exposure; Humans; Nitrogen; analysis; metabolism; Organic Chemicals; analysis; metabolism; Oxides; pharmacology; Ozone; pharmacology; SARS Virus; drug effects; isolation & purification; Trihalomethanes; analysis; metabolism; Ultraviolet Rays; Waste Disposal, Fluid; methods; Water Microbiology
- From: Biomedical and Environmental Sciences 2006;19(3):173-178
- CountryChina
- Language:English
-
Abstract:
OBJECTIVETo evaluate the disinfection of wastewater in China.
METHODSDuring the SARS epidemic occurred in Beijing, a study of different disinfection methods used in the main local wastewater plants including means of chlorine, chlorine dioxide, ozone, and ultraviolet was carried out in our laboratory. The residual coliform, bacteria and trihalomethanes, haloacetic acids were determined after disinfection.
RESULTSChlorine had fairly better efficiency on microorganism inactivation than chlorine dioxide with the same dosage. Formation of THMs and HAAs does not exceed the drinking water standard. UV irradiation had good efficiency on microorganism inactivation and good future of application in China. Organic material and ammonia nitrogen was found to be significant on inactivation and DBPs formation.
CONCLUSIONChlorine disinfection seems to be the best available technology for coliform and bacteria inactivation. And it is of fairly low toxicological hazard due to the transformation of monochloramine.
