نتایج جستجو برای: rapid sand filter

تعداد نتایج: 450786  

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

چکیده ندارد.

Journal: :iranian journal of public health 0
ah mahvi r sheikhi k naddafi

the continuous filter is a kind of sand filter, which will operate without any interruptions for backwashing and also it accepts high-suspended solid levels in feed stream. fouled sand is continuously removed from the filter bed, washed and recycled back without interruption with filtration process. various samples of water with certain amounts of turbidity enter through a feed pipe and being d...

ژورنال: طلوع بهداشت یزد 2016
برایی, ایران, برقعی, سیدمهدی, تکدستان, افشین, جاوید, امیرحسین, حسنی, امیرحسام,

Abstract Introduction: Nowadays, the greatest of process type used in treatment of beverage water is conventional treatment. That it cannot remove organic matter effectively. Filtration is one of the most important treatment processes used in water treatment plant.The one of approaches, modification of conventional rapid sand filters into dual or multimedia filters. Methods: This study wa...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی تهران 1368

چکیده ندارد.

Journal: :مدیریت آب و آبیاری 0
مسعود غفاری کارشناس ارشد مهندسی آبیاری و زهکشی، پردیس ابوریحان- دانشگاه تهران جابر سلطانی استادیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان- دانشگاه تهران مهدی اکبری دانشیار مؤسسۀ تحقیقاتی فنی و مهندسی کشاورزی علی رحیمی خوب استاد گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان- دانشگاه تهران

one of the main problems in micro irrigation system is inappropriate combination and in some cases inappropriate performance of filters and sand tanks in central control systems which cause reduction in efficiency of system and increasing of operating costs. this study evaluates affect the amount of algae on the performance of disc filters sand tank in research farm deputy of soil and water and...

Journal: :Journal of Engineering and Technological Sciences 2022

Microplastics (MP) can pose a serious threat to the environment and human health because of their tiny size ability spread easily in water. One alternative treatments remove MP from water is rapid sand filter (RSF). The objective this study was analyze effects media loading rate on RSF performance removing MP. applied silica with effective sizes (ES) 0.39 0.68 mm. rates filtration were 4; 6; 8 ...

Journal: :Water research 2018
Marta Vignola David Werner Matthew J Wade Paola Meynet Russell J Davenport

Little is known about the forces that determine the assembly of diverse bacterial communities inhabiting drinking water treatment filters and how this affects drinking water quality. Two contrasting ecological theories can help to understand how natural microbial communities assemble; niche theory and neutral theory, where environmental deterministic factors or stochastic factors predominate re...

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