نتایج جستجو برای: water distribution system
تعداد نتایج: 3171825 فیلتر نتایج به سال:
هدف از انجام این تحقیق تعیین اهمیت لوله در شبکه توزیع آب با استفاده از منطق فازی می باشد. با توجه به اینکه اهمیت لوله در شبکه توزیع آب متفاوت است، اصطلاحا به آن اطلاعات مبهم می گویند، هدف اصلی این تحقیق استفاده از منطق فازی به کمک نرم افزار matlab برای اطلاعات مبهم می باشد. هر کدام از لوله های شبکه، دارای ارزش متفاوتی در محاسبات افت می باشند، انتخاب لوله با مشخصات متناسب با ارزش آن می تواند موج...
compared to conventional chlorination methods which apply chlorine at water treatment plant, booster chlorination has almost solved the problems of high dosages of chlorine residuals near water sources and lack of chlorine residuals in the remote points of a water distribution system (wds). however, control of trihalomethane (thm) formation as a potentially carcinogenic disinfection by-product ...
Controlling the microbiological quality of water is important for its uses. Microbiological requirements of drinking water ensure the absence of coliforms, but may indicate the potential presence of other potentially pathogenic microorganisms and viruses of fecal origin. A total of 36 water samples, representing the drinking water of the whole city of Aradan, Semnan, Iran, were randomly collect...
background: provision of safe drinking water is one of the basic needs of every society and it will only be possible through preventive and comprehensive management of drinking water security programs such as haccp. hazard analysis critical control point (haccp) is an internationally accepted process control system which includes recognition and determination of risk factor properties of proces...
Background & Aim: Corrosion and scaling in water distribution system are very important as a matter of financial and health issues. This study was carried out to evaluate the corrosion and scaling potential in the water distribution system of Torbat Heydariyeh city in 2012. Methods: This cross- sectional/ descriptive study used cluster sampling in which the city was divided into 15 clusters....
Background and Aim: Natural organic matter (NOMs), measured on the basis of organic carbon, produces disinfection by-products precursors (DBPs) during the chlorination process. Some DBPs are carcinogenic. NOMs are not completely removed by conventional water treatment. As a result, in addition to forming DBPs, they support bacterial regrowth in the water distribution systems and cause unpleasan...
Background: The best way to assure the quality of drinking water is implementing a comprehensive and integrated management system with cooperation of all the related organizations Therefore, the purpose of this study is the assessment of safety in drinking water supply system of Zanjan. Methods: This investigation was performed by WSP-QA Tool software and WHO and IWA manual of water safety pla...
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