Impacts of Drinking Water Pretreatments on the Formation of Nitrogenous Disinfection by-Products

Authors

Wen Hai Chu, Tongji University
Naiyun Gao, Tongji UniversityFollow
Yang Deng, Montclair State UniversityFollow
Michael R. Templeton, Imperial College LondonFollow
Daqiang Yin, Tongji UniversityFollow

Document Type

Article

Publication Date

12-1-2011

Journal / Book Title

Bioresource Technology

Abstract

The formation of disinfection by-products (DBPs), including both nitrogenous DBPs (N-DBPs) and carbonaceous DBPs (C-DBPs), was investigated by analyzing chlorinated water samples following the application of three pretreatment processes: (i) powdered activated carbon (PAC) adsorption; (ii) KMnO 4 oxidation and (iii) biological contact oxidation (BCO), coupled with conventional water treatment processes. PAC adsorption can remove effectively the precursors of chloroform (42.7%), dichloroacetonitrile (28.6%), dichloroacetamide (DCAcAm) (27.2%) and trichloronitromethane (35.7%), which were higher than that pretreated by KMnO 4 oxidation and/or BCO process. The removal efficiency of dissolved organic carbon by BCO process (76.5%) -was superior to that by PAC adsorption (69.9%) and KMnO 4 oxidation (61.4%). However, BCO increased the dissolved organic nitrogen (DON) concentration which caused more N-DBPs to be formed during subsequent chlorination. Soluble microbial products including numerous DON compounds were produced in the BCO process and were observed to play an essential role in the formation of DCAcAm in particular.

DOI

10.1016/j.biortech.2011.09.109

MSU Digital Commons Citation

Chu, Wen Hai; Gao, Naiyun; Deng, Yang; Templeton, Michael R.; and Yin, Daqiang, "Impacts of Drinking Water Pretreatments on the Formation of Nitrogenous Disinfection by-Products" (2011). Department of Earth and Environmental Studies Faculty Scholarship and Creative Works. 351.
https://digitalcommons.montclair.edu/earth-environ-studies-facpubs/351

Published Citation

Chu, W., Gao, N., Deng, Y., Templeton, M. R., & Yin, D. (2011). Impacts of drinking water pretreatments on the formation of nitrogenous disinfection by-products. Bioresource technology, 102(24), 11161–11166. https://doi.org/10.1016/j.biortech.2011.09.109