Water Quality and Formation of Trihalomethanes in New Azab Drinking Water Treatment Plant: Case Study

Mohamed El-Kassem Hassouna, Mohamed I. Badawy, Tarek A. Gad Allah, Mohamed Hamdy Said


New Azab drinking water treatment plant is the largest treatment plant in Fayoum Governorate taking its raw water from Hassan Wassef stream, which is considered as the largest stream in Fayoum Governorate. It works with conventional chlorination system combined with fast sand filter technique for the treatment of raw water. To monitor water quality and to assess relation between organic matter and trihalomethanes (THMs) formation, different samples have been collected from inlet, flash mix, slow mix, sedimentation basin, filtration, and finally from plant outlet, in addition to samples from the related distribution system. The measured parameters were TOC, DOC, UV254, SUV, color, THMs, alkalinity, turbidity and conductivity. Obtained data revealed that New Azab DWTP works well for all the measured parameters, especially for the removal of suspended solids and color as values decreased from 20.3 NTU and 41mgL-1 Pt/Co at the plant inlet to 0.96 NTU and 3 mgL-1 Pt/Co at its outlet, respectively. Unfortunately, the treatment plant efficiency for the removal of total organic carbon is very low. Chlorine reacts with natural organic matter (NOM) that has not been completely removed during the treatment and forms trihalomethanes (THMs) represented by chloroform, bromodichloromethane, dichlorobromo methane and bromoform. The total concentration of THMs ranged between 15.44 and 50.88 µg/L with the highest concentration in summer season.


D. Budziak, L. R. Junior, E. Beltrame, E. Carasek, Environ. Monit. Assess, 127 (2007) 435– 444.

V. T. Ivancev, B. Dalmacijam, Z. Tamas and E. Karlovic, Wat .Research, 33 ( 2002)37 15–22.

Jr. G. E. Bove, P.A. Rogerson, and J. E. Vena, International Journal of Health Geographic, 6(18) (2007) 1-12.

K. P. Cantor, C. F. Lynch, M. E. Hildesheim, M. Dosemeci, J. Lubin, M. Alavanja and G. Craun, Epidemiology, 9 (1998)21-28.

C. M. Villanueva, K. P. Cantor, S. Cordier, J. J. Jaakkola, W. D. King, and C. F. Lynch, j. Risk of bladder cancer Epidemiology, 15 (2004)357-367.

C. M. Villanueva, K. P. Cantor, J. O. Grimalt, N. Malats, D. Silverman and A. Tardon, American Journal of Epidemiology, 165(2007)148-156.

APHA, AWWA, WEF-standard methods for examination of water and waste water. 20thedition. Washington: DC; 1998.

E. H. Goslan, F D. A. Gurses, J. Banks and S. A. Parsons, Chemosphere, 7(2006) 1113-1119.

H. Y. Kim, and M. J. Yu, Water Research, 39 (2005)4779-89.

R. Otson, D. T. Williams and D.C. Big, Water Supply and Water Quality, (1982)50–102.

R. L. Sinsabaugh, R. C. Hoehn, W. R. Knocke and A. E. Linkins, Journal of American Water Works Association, 78 (1986)74-82.

V. Uyak, I. Koyuncu, I. Oktem, M. Cakmakci and I. Toroz, J. Haz. Mat., 152 (2008)789-794.

P. Jarvis, E. Sharp, M. Pidou, R. Molinder,S. A. Parsons and B. Jefferson, Water Research, 46 (2012)4179- 4187.

M. A. El-Dib, M. I. Badawy and R.K.Ali, Proceedings, IV International Conference, Water Supply and Water Quality,(2000) 93–102.

R. Sadiq and M. J. Rodriguez, Science of the Total Environment, 321 (2004)21-46.

B. Werschkun, Y. Sommer and S. Banerji, Water Research, 46 (2012) 4884-4901.

E. H. Smith and K. E. El-Deen, Water Science & Technology: Water Supply, 9 (2009) 113-120.

A. A. M. Hassan, E. Befenati and R. Fanelli, Egyptian Bulletin of Environmental Contamination and Toxicology, 56 (1996)397-404.

M. F. El-Shahat, S. H. Abdel-Halim and G. A. Hassan, Environmental Contamination and Toxicology, 67(2001)549-553.

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