Title :
THM and HAA Formation from Sequential Use Ozone and Monochloramine to Disinfection in the Presence of Tannic Acid
Author :
Shuqing, Zhao ; Zhonglin, Chen ; Lei, Yang ; Xu, Zhai ; An, Li
Author_Institution :
State Key Lab. of Urban Water Resource & Environ., Harbin Inst. of Technol., Harbin, China
Abstract :
Tannic acid, as a surroguate of natural organic matter (NOM), were used as model compound. A study was conducted to evaluate the main disinfection byproducts of sequential use ozone and monochloramine to disinfection in the presence of tannic acid. Results of Disinfection byproduct formation potential show that the main disinfection byproduct include TCM (trichloromethane) and DCAA(dichloroacetic acid). Smaller anounts of TCAA(trichloroacetic acid) were also found. The production of TCM and DCAA increase significantly with the increase of disinfectant dosage(ozone and monochloramine)and temperature. From pH 7-8, more disinfectant byproducts are produced.
Keywords :
chemical products; microorganisms; water resources; water treatment; dichloroacetic acid; disinfectant; disinfection byproduct; inactivate pathogenic microorganisms; monochloramine; tannic acid; trichloromethane; water sources; Chemicals; Cryptography; Forestry; Immune system; Laboratories; Microorganisms; Pathogens; Production; Temperature; Water resources; disinfection byproducts; monochloramine; ozone; tannic acid;
Conference_Titel :
Energy and Environment Technology, 2009. ICEET '09. International Conference on
Conference_Location :
Guilin, Guangxi
Print_ISBN :
978-0-7695-3819-8
DOI :
10.1109/ICEET.2009.452
