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Determining Causes for Taste and Odor in Bandar Abbas's Drinking Water

by Mahmoud Asadi, Tehran Medical Sciences Univ, Tehran, Iran,
A. R. Mesdaghinia, Tehran Medical Sciences Univ, Tehran, Iran,



Document Type: Proceeding Paper

Part of: Water Resources Planning and Management: Saving a Threatened Resource?In Search of Solutions

Abstract:

In the south of Iran on the shore of Persian Gulf, Bandar Abbas has a population of over 450,000. The means annual rainfall of Bandar Abbas is less than 205 millimeters of precipitation per year. Correspondingly, the source of fresh water in Bandar Abbas is very short. This problem has been solved by the construction of the Minab (Esteghlal) Dam. A short time after the operation of the Minab dam water consumers complained the objectionable taste and odor of the drinking water. Research has been shown that taste and odor are caused by the growth of microorganisms in the lake and water supplies. Some influence species algae are: Anacystis, Pondorina, Dinobrion, Tabellaria, Oocystis and Microcystis. Geosmine and 2- methylisoborneol are two odor and taste components, which have been identified as major sources of earthy/musty muddy odor and taste in water supplies. To control this problem possible ways of improvement of conventional water treatment are studied regarding the climate, economy and locality, as a result the use of Powder Activated Carbon (PAC) and Dissolved Air Floatation (DAF) with the range dosage of PAC 1 to 40 mg/L and average 6 mg/L is suggested.

Subject Headings: Water treatment | Water supply | Odors | Water quality | Water pollution | Dams | Activated carbon | Iran | Middle East | Asia | Persian Gulf

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