point-of-use filtration Articles

  • A Case for Point-of-Use RO Ultrapure Water Systems

    ULTRAPURE WATER CRITERIA - AN OVERVIEW 'Pure water' is a relative term. Practically speaking, no water, naturally occurring or treated by man, consists solely of H2O molecules. Forever in pursuit of achieving equilibrium with its surroundings, water has unique characteristics that result in its ability to dissolve most matter. This property of water to dissolve and transport materials is ...

  • Membrane filtration

    Membrane is a thin layer of material that is capable of separating compounds as a function of physical and chemical properties when a driving force is applied across the membrane, which has been widely used in a wide range of applications in water industry [1]. Membrane can be classified by the range of compounds separated and the driving forces employed. For example, microfiltration (MF), ...


    By IWA Publishing

  • Caustic Recovery Using Membrane Filtration

    Abstract Food and beverage processors that use dilute caustic solutions for cleaning process equipment have shown increased interest in recovering the used caustic. The primary reason is that the price of caustic has increased significantly in the past year or so. Membrane filtration technology can be used to remove suspended solids (clarify with microfiltration) and/or dissolved ...


    By GEA Filtration

  • Efficacy of an appropriate point-of-use water treatment intervention for low-income communities in India utilizing Moringa oleifera, sari-cloth filtration and solar UV disinfection

    This study investigated the efficacy of a POU water treatment system featuring sari-cloth filtration and/or Moringa oleifera coagulation as pre-treatments for solar disinfection (SODIS). Surface water from a peri-urban slum in Chennai, India, was treated and analysed for turbidity, organic content via chemical oxygen demand (COD) and microbiological quality via most probable number (MPN) ...


    By IWA Publishing

  • Filtration solutions for the energy sector

    AZUD offers Taylor made solutions for any kind of process where water need to be treated: Recirculation cooling processes. Side stream filtration to remove all solids from the cooling tower. Make up water treatment, keeping elements like heat exchangers and nozzles free of problem. Protection for UF membranes in order to enhance its performance and make them last ...


    By Sistema Azud, S.A.

  • Filtration and manganese removal

    Manganese removal through a filter bed is generally carried out and accepted by practitioners and researchers as occurring through catalytic oxidation at the surface of MnO2 coated media, although manganese passage through a coated media filter has been little investigated. To better understand the kinetics of Mn removal through a naturally coated filter, a pilot plant consisting of four filter ...


    By IWA Publishing

  • Tailings filtration - case study

    YEAR: 2009 COUNTRY: MEXICO N° and MACHINERY MODEL EMPLOYED: 3 GHT 2000.P13 MEM Diemme® Filtration The customer, a silver Mine in Mexico, had just started up a new 3500 t/d cyanidation plant to increase its silver bar production to 115 t/y. The problems relevant to the adoption of this solution were: ...


    By Aqseptence Group

  • Membranes, the Finest Filtration

    Introduction The notion that salt could be removed from seawater without a phase change took hold of Dr. Sourirajan's imagination in the late 1950's. The actual invention of the reverse osmosis (RO) membrane took place in his laboratory at UCLA around 1960. (Thus Sourirajan could be called not only the 'Father of Reverse Osmosis,' but the initiator of all crossflow membrane technology.) The full ...


  • Revolutionary Filtration Put To The Test

    There are many cool aspects of my job, not the least of which is learning — and sometimes even breaking news — about the latest technologies in oil and gas. When I heard from Mike Dejak, executive VP of Eco-Tec, that the company's new technology could "revolutionize filtration" for the produced water market, I was anxious to learn more about it. However, I was also duty-bound to you, ...


    By Eco-Tec Inc.

  • Magnetic filtration used in a candy manufacturing plant

    Candy ManufacturerPt. Mayora Indah Tbk.IndonesiaPROBLEM: High levels of finished product being rejected due to ferrous contamination.SOLUTION: Beny Hermawan of PT. Sinarmentari Indoprima the Indonesia distributor for OEI installed an OEI magnetic filter rod (3RNC5812) in an existing T-Strainer on the finished product line (photo A).RESULTS: Photo B: contamination captured 44 grams ...


  • Fundamentals and Advantages of Screen Filtration

    The “art” of filtration utilizes many methods for separating solid particles from fluids. There is often no right or wrong method. Water quality and customer requirements usually determine the “best” method for each unique situation. Ridged screens, pleated cartridges, string wound cartridges, melt blown cartridges, woven fabrics, non woven fabrics, sintered metals, granular media, frizzy balls ...

  • Air filtration applications for membranes

    Given their unique performance attributes membranes are finding use in a growing number of high efficiency air filtration applications. One example is in respirators and personal protective equipment. Applications where intense physical demands and risk of exposure to harmful contaminants are present demand the high efficiency / low pressure drop combination of expanded polytetrafluoroethylene ...

  • Understanding Crossflow Filtration

    There's a lot of attention being given to water availability and purity, with good reason. Obtaining enough water is a struggle in some areas. In others, water is tainted with contaminants. It is therefore predictable that regulations and economics will force careful water treatment and stress water re-use. Fortunately, there are water treatment methods that can help you meet the water quality ...


  • Wastewater Treatment Using Crossflow Filtration Technology

    Introduction It does not take a great deal of effort these days to recognize the attention being given to water availability and purity. If in a position of consumption, obtaining just a minimum supply is a struggle in some geographical areas. In other areas available water is tainted with contaminants making it unsuitable for use. Further, those fortunate enough to have ample supply in the ...

  • Why Oil Filtration is Important for OEMs

    The need of oil filtration prevails in a number of industrial spheres which involves the usage of mechanical equipments. The types of filtration can be divided into two major categories i.e. primary filtration which is used for screening and secondary filtration used for cleaning purposes. The former is applicable and beneficial for the protection and maintenance of mechanical equipments ...


  • Antimicrobial Action of BiOn filtration media

    Bi-On is an air filtration media used in fruit and vegetable sold storage to eliminate harmful volatile compounds, especially ethylene, and sanitize the air. The filtration media is composed of potassium permanganate, its active ingredient, and natural clays. Potassium permanganate is a chemical compound which is widely known for its oxidizing and disinfectant properties. It is used in the ...


    By Bioconservacion SA

  • Media expansion monitoring improves filtration

    In municipal surface water treatment plants, optimum filter performance is a crucial component. Filtration is the primary treatment process at water treatment plants, and backwashing is the primary means to keep filters functioning properly to produce safe drinking water for the public. Since 2000, Entech Design, Inc. has used underwater acoustic sensing technology to monitor filter media ...


    By Entech Design, Inc.

  • Advanced treatment of WWTP effluent with filtration leading to a pretreatment technique for membrane filtration

    In 2000 the European Union introduced the Water Framework Directive (WFD). The aim of the WFD is having an ecological and chemical balance for all surface waters in Europe in 2015. The European Commission identified 33 priority substances and their maximum allowable concentrations, FHI-values (Fraunhofer Institute), which are specified in the Annex of the WFD. The objective of this research is to ...


    By IWA Publishing

  • Clarifiers-No, Filtration-Yes: A Case Study

    Problem Twenty miles southeast of Coos Bay, Oregon situated at the conjunction of the North and South Forks of the Coquille River lays the town of Myrtle Point. Just five years ago this community of 2670 residents was facing a large potable water problem with an even larger price tag. The town feeds its water treatment plant from the North Fork Coquille River. Prior to the 1990s the water ...

  • Peristaltic pumps for moving filtration water

    The Eversburg sewage treatment plant is designed to serve 250,000 population equivalents and is one of three plants operated by the city of Osnabrück in northern Germany. But in 2005, its actual load was closer to 309,000 population equivalents (COD 80 mg/l), pushing the nitrogen input level above the plant's capabilities. To deal with this situation, engineer Peter Sikora organized a team ...


    By ALLWEILER GmbH

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