Variation of Disinfection By-Products Formation Potential Species at Several Stages of Drinking Water Treatment Plants

Abstract:

The variation of disinfection by-products (DBPs) at several stages of drinking water treatment plants was investigated in two drinking water plants. The results clearly indicate that the low molecular weight total organic carbon (TOC) which has been identified as primary precursor for chlorinated DBPs was difficult to remove by coagulation. Plant A which used conventional coagulation/sedimentation could not decrease the species of trihalomethanes (THMs) and haloacetic acids (HAAs) formation potential. Biological activated carbon (BAC) was applied in Plant B which removed the maximum amount of TOC, while more kinds of microbial products were produced in BAC unit which could be the potential precursors of DBPs. Therefore, the species of DBPs formation potential still increased in the treatment processes of Plant B. Because different components of organic precursors produced different DBPs species, the processes of Plant B could decrease TOC efficiently but the species of THMs and HAAs formation potential.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 337-340
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.337
• Online since: September 2013
• Authors: Qiang Zhang, Bin Liu
• Keywords: Disinfection By-Products, Drinking Water, Formation Potential, Variation

References

[1] J.J. Rook, Formation of haloforms during chlorination of natural water, Water Treatment Examination. 23 (1974), 234-243.

[2] C. Chen, X.J. Zhang, L.X. Zhu, J. Liu, W.J. He, H.D. Han, Disinfection by-products and their precursors in a water treatment plant in North China: Seasonal changes and fraction analysis, Sci. Total Environ. 397 (2008), 140-147.

DOI: 10.1016/j.scitotenv.2008.02.032

[3] W.D. King, L.D. Marrett, Case-control study of bladder cancer and chlorination by-products in treated water (Ontario, Canada), Cancer Causes Control 7 (1996), 596-604.

DOI: 10.1007/bf00051702

[4] W.D. King, L.D. Marrett, C.G. Woolcott, Case-control study of colon and rectal cancers and chlorination by-products in treated water, Cancer Epidem. Biomar. 9 (2000), 813-818.

[5] K. Waller, S.H. Swan, G. DeLorenze, B. Hopkins, Trihalomethanes in drinking water and spontaneous abortion, Epidemiology. 9 (1998), 134-140.

DOI: 10.1097/00001648-199803000-00006

[6] S. Chellam, R.R. Sharma, G.R. Shetty, Y. Wei, Nanofiltration of pretreated Lake Houston water: Disinfection by-product speciation, relationships, and control. Sep. Purif. Technol. 64 (2008), 160-169.

DOI: 10.1016/j.seppur.2008.09.007

[7] S. Xue, Q.L. Zhao, L.L. Wei, T. Jia, Effect of bromide ion on isolated fractions of dissolved organic matter in secondary effluent during chlorination, J. Hazard. Mater. 57 (2008), 25-33.

DOI: 10.1016/j.jhazmat.2007.12.071

[8] APHA, Standard Methods for The Examination of Water and Wastewater, 20th ed. Am. Public Health Assoc. /Am. Water Works Assoc. /Water Environ. Washington DC, USA. (1998).

[9] USEPA, Method 552. 2: Determination of Haloacetic Acids and Dalapon in Drinking Water by Liquid–Liquid Extraction, Derivatization, and Gas Chromatography with Electron Capture Detection. (1995).

DOI: 10.3403/30060338u

[10] D.A. Reckhow, P.C. Singer, R.L. Malcolm, Chlorination of humic materials - by-product formation and chemical interpretations, Environ. Sci. Technol. 24 (1990), 1655-1664.

DOI: 10.1021/es00081a005

[11] P.C. Singer, Humic substances as precursors for potentially harmful disinfection by-products, Water Sci. Technol. 40 (1999), 25-30.

DOI: 10.2166/wst.1999.0434

[12] J.C. Lou, T.W. Chang, C.E. Huang, Effective removal of disinfection by-products and assimilable organic carbon: An advanced water treatment system, J. Hazard. Mater. 172 (2009), 1365-1371.

DOI: 10.1016/j.jhazmat.2009.07.151