Reverse Osmosis and Nanofiltration, 2e (Awwa Manual)

!±8± Reverse Osmosis and Nanofiltration, 2e (Awwa Manual)

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Post Date : Dec 20, 2011 13:15:12 | Usually ships in 24 hours

Updated coverage of selection, installation, operation, and maintenance of reverse osmosis (RO) and nanofiltration systems (NF) in water treatment. Chapter topics encompass theory and applications, design, equipment, installation, operations, and maintenance. Includes tables, figures, appendixes, references, and glossary, with 4-color throughout.

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'LifeFilta' Nano Water Filters (2 nano ~ 0.002 µm!) Straws & Bottles 25042011.AVI

!±8± 'LifeFilta' Nano Water Filters (2 nano ~ 0.002 µm!) Straws & Bottles 25042011.AVI

www.LifeFilta.com is the international brand of the SenseSeveri group for distributing Safe Water Purifiers. LifeFilta NANO Filters Straws & Bottles from SenseSeveri STOP the Super Bacteria (mutation of gene E-Coli Bacterium) !!! Not only occuring in India, Bangladesh ... but also in the United Kingdom and other European countries ... NANO FILTERS are 'Real Life Savers' ... ? As Straw and as Bottle, it filters at minimum filtration (0.002µm!) by NANO technology, without carbon filter nor chemicals ... removes 99.99% of all virus & 99.9999% of all bacteria. The proper functioning of filtration will be guaranteed because of its engineering design: It's portable & robust without spare parts, army proof and according to WHO certifications & US regulations. Simple & Instant use, no extra power source nor battery & army proofed material, affordable for anyone and everywhere ... Maintenance after 2 years and thus reusable: capacity of minimum 1500L (750 days, 2L fresh & pure water= 2 years & up fresh drinking water. - lightweight straw from army proof material (certifications) with a special membrane (no carbon, nor chloride) - filters more than 1500L: this means 2L of pure water for minimum 750 days!! more than 2 years of free pure fresh water ... Against water-bourne Virus, Bacteria (ie Enterovirus, E Coli & Fecal Coliforms, Giardia, Cryptosporidium, Protozoa, ...) and pathogens, Suspended Solids, ... by means of ultrafiltration or nanofiltration @ 0.002µm! Certifications ...

'LifeFilta' Nano Water Filters (2 nano ~ 0.002 µm!) Straws & Bottles 25042011.AVI

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A Novel Approach to Seawater Desalination Using Dual-Staged Nanofiltration (Awwarf Report)

!±8± A Novel Approach to Seawater Desalination Using Dual-Staged Nanofiltration (Awwarf Report)

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Post Date : Dec 10, 2011 21:54:58 | Usually ships in 24 hours

As the quantity and quality of inland water sources decline, more coastal municipalities are looking at seawater desalination as a potential source of drinking water. The Long Beach Water Department (LBWD) developed an alternative technology to desalt seawater by using dual-staged nanofiltration (NF2). This novel NF system treats the first-stage permeate through a second stage in order to produce finished water with salinity levels that meet drinking water standards. Three commercially-available NF membranes were selected for this study based upon their designation as NF membranes by the manufacturers and their salt rejection characteristics. Results from the bench-scale evaluation were integrated in a performance-predicting model, which was subsequently calibrated against the results obtained with an 8-gpm pilot unit. The pilot-test plan considered the impact of temperature, pressure, and array configuration on permeate water quantity and quality. The percentage of desalinated water that could be blended into LBWD's distribution system was determined by taking into account the issues of disinfection by-product (DBP) formation, disinfectant residual, and corrosivity. Finally, viral challenge tests were considered to verify the inherent redundancy of the system and the impact that recycling streams would have on virus accumulation.

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