Investigate of home water treatment systems efficiency in Ahvaz city 2013
الموضوعات :محسن بیات زاده 1 , مریم محمدی روزبهانی 2 , رویا زکاوتی 3
1 - گروه آلودگی های محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز ، ایران.
2 - گروه آلودگی های محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز ، ایران.
3 - گروه قارچ شناسی، دانشکده پرستاری و مامایی، دانشگاه آزاد اسلامی، واحد اهواز.
الکلمات المفتاحية: Water Quality, کیفیت آب, اهواز, Ahvaz, دستگاه های تصفیه خانگی, پارامتر های فیزیکی- شیمیایی و میکروبی آب, home treatment devices, the physical - chemical and biological water parameters,
ملخص المقالة :
This study is descriptive - cross sectional and during the 8 months from winter of 2012 to spring and summer 2013 was performed . In this study at first, with preparation and organization the questionnaire, information about usage, type and functionality of household treatment systems were collected. Then from 20 Household water treatment ،after water treatment, the samples were taken. samples for examined , dissolved oxygen, conductivity, pH, total dissolved solids, total hardness, fluoride, nitrate, chloride and microbial quality of water, according to instructions provided in the latest edition of standard methods(2012), were tested. Sampling in 5 different locations in Ahwaz city that covered by 5 treatment plant was performed.Mean quality parameters of pH, electrical conductivity, total dissolved solids, dissolved oxygen, total hardness, fluoride, chloride, nitrate and MPN values, respectively, about 8.26, 338.37, 163.61, 2.76, 78.4, 0.08, 55.84, 0.577 and 5.39 are measured. The investigations also revealed that treatment systems, make acceptable standard for some parameters of drinking water such as pH& EC but led to a sharp decline in the values of other parameters -TDS, DO total hardness, chloride, fluoride and nitrate- below the drinking water standards & Have been no effect in reducing microbial contamination.
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