نتایج جستجو برای: drinking water treatment

تعداد نتایج: 1912027  

Journal: :archives of hygiene sciences 0
zahra ahmadli department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. mohammad fahiminia research center for environmental pollutants, qom university of medical sciences, qom, iran. reza ansari qom water and wastewater company, qom, iran. maryam savadkouhi department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. azita anbaz department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. akbar escandari department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran.

background & aims of the study: drinking polluted water can transmit diseases, so potable water treatment is one of the most challenging and complex systems in countries. continuous monitoring for evaluation process in water treatment plant is important. this study aims to investigate performance evaluation of qom water treatment plant to remove turbidity and coliform in 2005 - 2014. materials ...

Journal: :مجله دانشگاه علوم پزشکی ایلام 0
صیاد بسطامی نژاد saiyad bastaminejad ilam university of medical scienceدانشگاه علوم پزشکی ایلام محمد فلاح mohammad fallah hamadan university of medical scienceدانشگاه علوم پزشکی همدان امیرحسین مقصود amirhossein maghsoud hamadan university of medical scienceدانشگاه علوم پزشکی همدان علیرضا رحمانی a rahmani ilam university of medical scienceدانشگاه علوم پزشکی ایلام حجت اله کاکایی h kakaee اکبر اکبری a akbari

introduction: giardia and cryptosporidium are two of the most common parasitic protozoa that cause acute intestinal infections in children, all of the world. these parsites find in water environments, such as untreated water , wastewaters and even treated water. according to, a precise study on surface water was not done, in our country, necessity of precise study by ifa method that is prescise...

Journal: :iranian journal of public health 0
r menhage-bena h kazemian m ghazi-khansari m hosseini sj shahtaheri

the purpose of this study was to find a relatively inexpensive method for removal of arsenate and arsenite from drinking water. the capability of iranian natural clinoptilolites, relevant synthetic zeolites a and p and iron(п) modified of them was investigated for the uptake of arsenic anions from drinking water. data obtained from ion-exchange using batch (static) technique showed that among t...

Journal: :Bulletin of the World Health Organization 1991
C J Hurst

A review of results published in English or French between 1980 and 1990 was carried out to determine the levels of indigenous human enteric viruses in untreated surface and subsurface freshwaters, as well as in drinking water that had undergone the complete conventional treatment process. For this purpose, the conventional treatment process was defined as an operation that included coagulation...

 Background and purpose: Household drinking water treatment devices are becoming commonplace to improve the quality of drinking water, remove odor, taste, turbidity and color, pathogenic organisms, toxic chemicals, organic matter, and carcinogenic pollutants. This study aimed at investigating the Heterotrophic plate count (HPC) in drinking water and possibility of biofilm formation in household...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده فنی 1387

چکیده ندارد.

Emerging contaminant in drinking water has created concerns among public, water supplier and government. Pharmaceutical in water and food even in low concentration have shown potential risks to human. Acetaminophen and ibuprofen are among a set of the most prescribed drugs in the world. In this study raw water and treated drinking water from Latyan drinking water treatment facilities were analy...

Nasrin Talebzadeh , Reza Dehghanzadeh ,

Introduction: Application of point-of-use (POU) drinking water treatment units is expanding across the world due to the increased concerns about the adverse health effects of water pollution. The main treatment systems of these devices are mostly activated carbon and nano-filter or reverse osmosis. Materials and Methods: This study was conducted to evaluate the effect of using POU units on phy...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Journal: :تولیدات دامی 0
شهناز ابراهیمی نژاد کارشناس ارشد، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه لرستان، خرم‏آبادـ ایران حشمت اله خسروی نیا دانشیار، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه لرستان، خرم‏ آبادـ ایران مسعود علیرضایی استادیار، گروه علوم پایه، دانشکدۀ دامپزشکی، دانشگاه لرستان، خرم‏آبادـ ایران

this study was carried out to investigate the effect ofadministration of satureja khuzistanica essential oil (skeo) in drinking water on performance, lipid oxidation, activity of antioxidative enzymes and cholesterol content of thigh meat using 720 one-day-old ross 308 broiler chicks. the skeo was added into drinking water at zero (control-), 200, 300, 400 and 500 mg/l along with a treatment co...

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