نتایج جستجو برای: coarse sand filtration csf

تعداد نتایج: 124101  

Journal: :محیط شناسی 0
سعید اسکندری دانشجوی دکتری مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران علی ترابیان استاد گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران غلامرضا نبی بید هندی استاد گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران مجید بغدادی استادیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران بهنوش امین زاده استادیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران

introduction conventional water treatment consist of unit processes include coagulation, flocculation, clarification, filtration and disinfection that goal is removal of turbidity, color and certain bacterial species. in filtration process flocculated substances that have not removed in pervious stage are sediment. filter media is often silica sand that removal mechanism is complex and consists...

2009
Yalchin Efendiev Achi Brandt Oleg Iliev Todd Arbogast Tanja Clees Johan Deconinck Leonhard Ganzer Stephan Matthäi

The objective of this workshop was to bring together researchers working in multiscale simulations with emphasis on multigrid methods and multiscale finite element methods, aiming at chieving of better understanding and synergy between these methods. The goal of multiscale finite element methods, as upscaling methods, is to compute coarse scale solutions of the underlying equations as accuratel...

Journal: :E3S web of conferences 2021

In this study, the method according to Indonesian National Standard (SNI) was applied. The objects test in form of cylindrical concrete which fine aggregate pumice sand and ordinary sand. made were tested for compressive strength. There 6 study with a size 15 cm x 30 cm. detail, 3 sand, while other coarse all crushed stone. result shown use as substitute can reduce strength by 23.53%. However, ...

2017
Karen E. Barry Joanne L. Vanderzalm Konrad Miotlinski Peter J. Dillon

Infiltration techniques for managed aquifer recharge (MAR), such as soil aquifer treatment (SAT) can facilitate low-cost water recycling and supplement groundwater resources. However there are still challenges in sustaining adequate infiltration rates in the presence of lower permeability sediments, especially when wastewater containing suspended solids and nutrients is used to recharge the aqu...

Journal: :Journal of Korean Society of Environmental Engineers 2013

Journal: :Water Science & Technology: Water Supply 2021

Abstract Schistosomiasis is a water-based neglected tropical disease that prevalent in over 78 countries. It affects communities are reliant on freshwater bodies contaminated with schistosome cercariae for their daily water activities. Whilst treatment the drug praziquantel relatively effective, it does not prevent reinfection. One option reducing schistosomiasis infection providing at-risk tre...

2017
Manuel Menéndez González

The neuropathology of Alzheimer's disease (AD) is characterized by the widespread accumulation of neuritic plaques and neurofibrillary tangles composed of deposits of beta-amyloid peptide (Aβ) and abnormally phosphorylated tau protein (phospho-tau) respectively. Considerable effort has been expended to identify methods to retard the deposition of these proteins or to enhance their clearance. It...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید