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

Volume

2

fYear

2009

fDate

16-18 Oct. 2009

Firstpage

885

Lastpage

887

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy and Environment Technology, 2009. ICEET '09. International Conference on

Conference_Location

Guilin, Guangxi

Print_ISBN

978-0-7695-3819-8

Type

conf

DOI

10.1109/ICEET.2009.452

Filename

5366916