نتایج جستجو برای: backwash effects
تعداد نتایج: 1544431 فیلتر نتایج به سال:
In primary effluent filtration (PEF), primary effluent is treated to reduce TSS, BOD, or other contaminants without resorting to secondary treatment in trickling filters or activated sludge basins. If PEF can meet the effluent quality requirements applicable to a wastewater stream, substantial cost reductions can be realized by using PEF instead of secondary treatment. In other instances, PEF c...
The present study aimed to investigate the potential application of chitosan (CS) and its two derivatives, dialdehyde (DCT) carboxymethyl (CMC), as new flocculants in purification filter backwash water. main objective work was remove disadvantages inconveniences associated with using synthetic flocculants, mainly based on polyacrylamide, by biodegradable non-toxic biopolymer flocculants. deriva...
New concepts in the manipulation of time in video editing are presented, enabling some unique visual effects. These effects include (i) slowing down (or postponing) some dynamic events while speeding up (or advancing) others. (ii) Creating dynamic panoramic images of dynamic scenes. (iii) Generating new views of a scene without a 3D model. (iv) Creating panoramic stereo images. Time manipulatio...
Abstract In this work, hollow fibre ultrafiltration (UF) membrane operating under gravitational force were used to treat Escherichia coli bloomed water as well contaminated surface water. The biofouling propensity of the UF was investigated. results showed that after single filtration using gravitational-driven unit, E. cells accumulated on and gave fair rejection 86.35–90.22% for initial conce...
Clogging problem has become one of the key problems restricting mining efficiency in-situ leaching uranium, and related research on law mechanism physical clogging not been reported. In order to identify understand complicated mechanism, experimental device is established simulate caused by suspended particles in uranium process, under different concentrations velocity flow are studied. The res...
This paper presents a technical overview of the capabilities and characteristics of technologies proposed for use as a means of providing copyright protection for digital information resources: a) Watermarks and fingerprints provide indication of ownership, and indication of the identity of a licensed user, respectively, by embedding security information in the digital object. This information ...
Peyer's patches (PPs), a major component of the gut-associated lymphoid tissue, serve as important antigen entry sites in mucosal immunity. PPs may play a role in the extension of ulcerative colitis (UC) into the terminal ileum. We sought to clarify the magnified endoscopic findings of the PPs in the terminal ileum of UC patients. Eighteen UC patients underwent magnifying chromoendoscopy before...
Background: According to WHO report, there are around 80 million people in the world that suffer from infertility and about 12-15% of the people in Iran are infertile. The nutrition has an important rule on infertility treatment. So we should improve the couple’s information and knowledge about the effective nutrition on the infertility to increase the chance of fertility and decrease negative ...
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