نتایج جستجو برای: water quality standard

تعداد نتایج: 1704360  

Journal: :Journal of environmental sciences 2012
Lei Zhao Xiaoling Zhang Yong Liu Bin He Xiang Zhu Rui Zou Yuanguan Zhu

Lake Fuxian is the largest deep freshwater lake in China. Although its average water quality meets Class I of the China National Water Quality Standard (CNWQS), i.e., GB3838-2002, monitoring data indicate that the water quality approaches the Class II threshold in some areas. Thus it is urgent to reduce the watershed load through the total maximum daily load (TMDL) program. A three-dimensional ...

ترسلی, احمد, نصیراحمدی, کامران , یوسفی, ذبیح اله ,

Background and purpose: In order to identify the impact of aquaculture effluents systems, industrial, agricultural and residential centers, between the output of water from Lar dam up the water input to the Caspian Sea in 7 different stations, river water quality parameters from October 1388 to September 1389 was studied and evaluated with water quality index. Materials and methods: This exper...

2015
Amit Vishwakarma

Although agenda of Water supply in sufficient quantity and standard quality is highlighted in India from last few years. But Yet Performance assessment and Efficiency evaluation of water supply services not in practice. However the analysis is confined to the realm of researchers and policy makers. The present paper spells inclusion of quality parameter in assessment of utilities through fronti...

Journal: :تحقیقات نظام سلامت 0
بابک کاکاوندی دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران احمد جنیدی جعفری دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تربیت مدرس، تهران، ایران اصغر قاسمی کارشناس، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران عبدالمجید قلیزاده دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران

normal 0 false false false en-us x-none fa background: nowadays wastewater is one of the important sources of environmental pollutions and   one of the aims of wastewater treatment is to maintain a healthy environment. nonstandard wastewater discharges and their use in agriculture or discharge to surface water will follow environmental and health hazards. the aim of this study was to compare th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

ژورنال: مجله علمی پژوهان 2018
رمضانی, محمدابراهیم, صالح زاده, مهدی,

Background and Objectives: Nowadays Access to safe and adequate drinking water has been an important national goal in different countries. The effect of ground water contaminationis one of the most important concerns of public-health worldwide. The purpose of this research was to determine the microbial and chemical quality of Surface Resources drinking water in Sardasht, Rabat, and Mirabad. M...

Journal: :iranian journal of health sciences 0
saeid mahdavi omran infectious diseases and tropical medicine research center, babol university of medical sciences, babol, iran ramazan rajabnia department of medical parasitology and mycology, school of medicine, babol university of medical sciences, babol, iran seyed mohammad bagher norozian amiri department of medical parasitology and mycology, school of medicine, babol university of medical sciences, babol, iran mohammad reza yousefi department of parasitology, school of veterinary medicine, babol branch, islamic azad university, babol, iran seyed javad moosavi department of medical parasitology and mycology, school of medicine, babol university of medical sciences, babol, iran mir masaud hosseini kiafarin industrial institute, babol, iran

abstract background and purpose: according to the reported problems in area of the inappropriateness of water quality which used for washing and staining of car apparatuses in a car factory, this research was carried out for identification of physical, chemical, and microbiological characteristics of the consumed water in babol car factory, iran. materials and methods: physical and chemical par...

Majid Otari Rahim Dabiri

Tested water samples taken from the ophiolite region of Forumad show that most of the concentrations of calcium, magnesium, sodium, sulfate, potassium, bicarbonate, and nitrate elements are in the standard range. Hydrogeochemical studies of the water samples show the existence of magnesium sulfate, chloromagnesium, and chlorosodium. Results of measuring the physical properties of the water show...

Journal: :jundishapur journal of health sciences 0
shahram moshashaian khouzestan water and wastewater company, ahvaz, ir iran abdolkazem neisi department of environmental health engineering and environmental technologies research centre, ahvaz jundishapur university of medical sciences, ahvaz, ir iran afshin takdastan department of environmental health engineering and environmental technologies research centre, ahvaz jundishapur university of medical sciences, ahvaz, ir iran afshin takdastan department of environmental health engineering and environmental technologies research centre, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

based on langelier, corrosion index of water in the distribution system was balanced. shadegan is a city and the capital of shadegan county in khuzestan province, iran. it has an area of 3197 m2 and located 84 km south of ahvaz. water distribution system serves 70,000 people in the city and the total consumed drinking water is 28525 m3per day (3,4).this descriptive, cross sectional study examin...

2012
O. O. S. Ojo

–Abundant as it may seem, in Nigeria, access to clean and potable water is a great challenge. Hence, the reason the physiochemical properties of the groundwater in Agbowo and Ajibode communities in Oyo State, Southwestern Nigeria was analyzed. Water samples were collected from fifteen shallow wells, with varying depths. The water quality parameters were analyzed in accordance to standard method...

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