Volume 4, Issue 4 (Autumn 2015 2015)                   Arch Hyg Sci 2015, 4(4): 208-216 | Back to browse issues page

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Mohammadi-Moghaddam F, Mahdavi M, Hajizadeh Y, Tashauoei H R, Ataeifar H, Ebrahimi A. Treatment of Highly Turbid Water by Polyaluminum Ferric Chloride (PAFCL). Arch Hyg Sci 2015; 4 (4) :208-216
URL: http://jhygiene.muq.ac.ir/article-1-105-en.html
1- Shahrekord University of Medical Science, Shahrekord, Iran.
2- Isfahan. University of Medical Sciences
3- Islamic Azad University Tehran Medical Branch
4- Office of National Water and Wastewater Company
5- Environment Research Center and Department of Environmental Health Engineering
Abstract:   (4415 Views)

Background & Aims of the Study: In some situation like rainfall seasons raw water become very turbid so it affected the water treatment plant processes and quality of produced water. Treatment of very high turbid water has some concerns like precursors for disinfection by-products and very loading rate of particle on filter's media and consequently increases in water consumption for filter backwash. This paper investigates the performance of a composite inorganic polymer of aluminium and ferric salt, Polyaluminium ferric chloride (PAFCl), for the removal of turbidity, color and natural organic matter (NOM) from high turbid water.

Materials and Methods: Experiments were carried out by Jar test experiment by synthetic water samples with 250 and 500 NTU turbidity that prepared in laboratory.

Results: The results of conventional jar test showed that the optimum pH for coagulation of water sample was 7.5 to 8 and optimum dosage of the coagulant was 10 mg/L. Removal efficiency of turbidity, color and UV adsorbent at 254 nm at optimum dose and pH without filtration was 99.92%, 100% and 80.6% respectively for first sample (250 NTU) and 99.95%, 99.49% and 84.77 for second sample (500 NTU) respectively.

Conclusion: It concluded that polyaluminium ferric chloride has a very good efficiency for the removal of turbidity, color and organic matter in high turbid water. Also it can be select as a coagulant for high turbid water and some waste water from water treatment plant like filter backwash water.

Full-Text [PDF 684 kb]   (2368 Downloads)    
Type of Study: Original Article | Subject: Environmental Health
Received: 2016/04/13 | Accepted: 2016/04/13 | Published: 2016/04/13

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