نتایج جستجو برای: declines the organic matters
تعداد نتایج: 16111372 فیلتر نتایج به سال:
T Sacramento–San Joaquin River Delta is a complex mosaic of waterways that forms the transition zone between San Francisco Bay and its watershed (fig. 1). Over the last century, the original dominant marsh habitat has been lost through filling and diking. Water flows have changed radically. Exotic plants and animals have invaded or been introduced intentionally, and toxic contaminants have beco...
ABSTRACT Support for redistribution in developing countries has been found to be weakly related income, meaning the poor are not much likelier than rich support redistribution. If economic self-interest, what explains redistribution? A multilevel regression analysis covering a decade of public opinion data from 18 Latin American finds explanations centered on social affinity. Specifically, peop...
Organic matters in raw water have a potential to generate harmful disinfection by-products such as trihalomethanes (THMs) during the chlorination process. The objectives of this study were to investigate the trihalomethane formation potential (THMFP) in Karoon River water and to determine the effect of several factors including total organic carbon (TOC), pH, chlorine dosage, water temperature,...
Introduction: The most important affect of natural organic matters in water is their reaction with chlorine and producing of disinfection byproducts that are carcinogenic. Humic acid is most common natural organic materials of surface water. Advanced oxidation processes (AOPs) are methods for the removal of organics from aqueous solutions. Application of electron beam radiation is one of these ...
Background and Objectives: One of the complete treatment processes for industrial and municipal wastewater treatment is membrane bioreactor process which has dominant potential in process and operation sections. This study was conducted to compare the performance of extended aeration activated sludge (EAAS) with submerged membrane bioreactor (SMBR) systems in the treatment of strength wastewate...
De hoeveelheid opgeloste organische stoffen (Dissolved Organic Matter DOM) in oppervlaktewater, en de samenstelling ervan, is een belangrijke graadmeter van de fysisch-chemische waterkwaliteit. Dit proefschrift beschrijft een drietal mogelijkheden om de concentratie van gekleurde opgeloste organische stoffen (Coloured Dissolved Organic Matter CDOM) in natuurlijke Nederlandse oppervlaktewateren ...
درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...
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Fouling of membranes decreases the applicability of the nanofiltration (NF) process, and thus a deeper understanding of membrane fouling is needed. Fouling and retention of different NF membranes by model feed waters was investigated in a laboratory-scale filtration unit. The model waters were composed so as to imitate the characteristics of chemically pre-treated surface water. No differences ...
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