نتایج جستجو برای: backwash effects

تعداد نتایج: 1544431  

Journal: :Bioresource technology 2010
Mark Sharrer Kata Rishel Amanda Taylor Brian J Vinci Steven T Summerfelt

The cost and effectiveness of three solids thickening processes, i.e., gravity thickening settlers (GTS), inclined belt filters (IBF), geotextile bag filters (GBF), were individually evaluated with the biosolids backwash produced in intensive aquaculture systems equipped with microscreen drum filters and radial-flow settlers. The IBF produced the cleanest discharge and highest treatment efficie...

2009
W. S. Guo S. Vigneswaran H. H. Ngo T. B. Van Nguyen R. Ben Aim

This study is to investigate on the long term performance of submerged membrane adsorption hybrid system (SMAHS) for organic matter removal from synthetic wastewater representative of biologically treated wastewater using low dose of powder activated carbon (PAC). A simple periodic backwash system is used to declog the hollow fiber membrane. In this reactor, bioreaction takes place due to the g...

1999
Howard Shrobe

As part of a collaboration with the White House Office of Media Affairs, members of the MIT Artificial Intelligence Laboratory designed a system, called COMLINK, which distributes a daily stream of documents released by the Office of Media Affairs. Approximately 4000 direct subscribers receive information from this service but more than 100,000 people receive the information through redistribut...

2017
Mokhtar Mahdavi Afshin Ebrahimi Hossein Azarpira Hamid Reza Tashauoei Amir Hossein Mahvi

During operation of most water treatment plants, spent filter backwash water (SFBW) is generated, which accounts about 2-10% of the total plant production. By increasing world population and water shortage in many countries, SFBW can be used as a permanent water source until the water treatment plant is working. This data article reports the practical method being used for water reuse from SFBW...

Journal: :World journal of gastroenterology 2014
Takahiro Nakazawa Itaru Naitoh Kazuki Hayashi Hitoshi Sano Katsuyuki Miyabe Shuya Shimizu Takashi Joh

This is a review of the characteristic findings of inflammatory bowel disease (IBD) associated with primary sclerosing cholangitis (PSC) and their usefulness in the diagnosis of sclerosing cholangitis. PSC is a chronic inflammatory disease characterized by idiopathic fibrous obstruction and is frequently associated with IBD. IBD-associated with PSC (PSC-IBD) shows an increased incidence of panc...

2012
Carmine Stolfi Francesco Pallone Giovanni Monteleone

Patients with inflammatory bowel disease (IBD) face an increased lifetime risk of developing colorectal cancer (CRC). Independent factors associated with increased risk include long disease duration, extensive colonic involvement, young age at onset of IBD, severity of inflammation, primary sclerosing cholangitis, backwash ileitis, and a family history of CRC, thus emphasising the role of intes...

2009
G. I. M. Worm G. A. M. Mesman K. M. van Schagen K. J. Borger L. C. Rietveld

The flow through a unit of a drinking water treatment plant is one of the most important parameters in terms of a unit’s effectiveness. In the present paper, a new EPAnet library is presented with the typical hydraulic elements for drinking water treatment processes well abstraction, rapid sand filtration and cascade and tower aeration. Using this treatment step library, a hydraulic model was s...

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