ultra-filtration Articles

  • Membrane biofouling mitigation through applying electric potential in the CF016 cell

    Membrane filtration is an effective way to remove pollutants and microorganisms from water and wastewater. However, membrane fouling lowers efficiency over time when considering rejection values and water flux.  Fouling is typically biological or particulate; fouling rate is a function of the membrane pore size relative to the size of the foulants and also the interactions between the ...


    By Sterlitech Corporation

  • Water Treatment System Types and Their Benefits

    Water is one of the most important utilities in the world. It’s used for bathing, cooking, washing clothes, cleaning dishes, and drinking. If you get your water from the city, you trust your tap water to be clean and healthy. It goes through a treatment plant before it reaches you, so it’s perfectly purified when it reaches you—right? Unfortunately, this isn’t always the ...

  • Screen Filtration Technology as Applied to Pretreatment of Reverse Osmosis and Ultra-Filtration Systems

    Summary New developments in the manufacturing technology of stainless steel weavewire screens enable mechanical style self-cleaning filters to be utilized as the primary pretreatment device for R-O and U-F systems. These systems are more cost effective and feature lower O&M requirements, than multimedia ...

  • Demonstrating ultra-filtration and reverse osmosis performance using size exclusion chromatography

    Advanced water treatment plants employing ultrafiltration (UF) and reverse osmosis (RO) membrane processes are frequently implemented for the production of high-quality recycled water. It is important that process performance is able to be quantified and assessed to ensure it is fit for purpose. This research utilizes size exclusion chromatography with organic carbon, organic nitrogen and UV254 ...


    By IWA Publishing

  • Pilot Study Application of Tertiary Clarification and Filtration to Meet Proposed Ultra Low Phosphorous Discharge Limits on The Spokane River

    The Spokane River flows through northern Idaho and eastern Washington. The Washington State Department of Ecology is proposing to implement an interim phosphorous TMDL (total maximum daily load) of 50 ppb, and a final TMDL of 10 ppb on all point source discharges to the river. Biological treatment alone is not sufficient to meet these levels, requiring the addition of tertiary physical/chemical ...

  • Dual layer hollow fiber PVDF ultra-filtration membranes containing Ag nano-particle loaded zeolite with longer term anti-bacterial capacity in salt water

    Dual layer polyvinylidene fluoride (PVDF), antibacterial, hollow fiber, ultra-filtration composite membranes with antibacterial particles (silver (Ag) nano-particles loaded zeolite (Z-Ag)) in the outer layer were prepared with high water flux and desired pore sizes. The amounts of Ag+ released from the composite membranes, freshly made and stored in water and salt solution, were measured. The ...


    By IWA Publishing

  • The Filtration Spectrum

    Reverse Osmosis. Microfiltration. Distillation. Deionization. With so many types of filtration and purification systems on the market today it is difficult to determine which type of technology is best for your needs. The filtration of liquids is performed at many levels. To understand how to maximize your filtration needs, one needs to consider the size range of the particles. Once this 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

  • Is Ultraviolet Ultra Safe?

    With retailers under pressure to meet increasing health and safety standards, it’s no surprise that many of our food & products are coming into contact with Ultraviolet (UV) radiation which is gradually becoming common as a cost effective method of reducing or eliminating pathogens Ultraviolet wavelengths are classified into three general areas: UV-A, UV-B and UV-C. These can be used in ...


    By Alpha-Cure Ltd

  • Ultra Pure Chemical Dispense Modules

    CPS was contracted to design, fabricate, install and commission Ultra Pure Chemical Dispense modules for a major new Electronics facility in Germany. Seven units were designed and installed to handle a range of Acids, Alkali’s and Solvents from 200 Litre drums to the tools in the cleanroom. The units were manufactured in White Polypropylene with Stainless Steel and PFA pumps and ...

  • Ultra Low Emission Vehicle II Ultra Low PGM

    The task for the emissions management sector is to deliver cost effective solutions to meet future emissions standards. Global Emissions Management reports on catalyst development at Johnson Matthey demonstrating that ULEV II limits can be ...

  • Ultra-Pure Proof with Mass Detection

    Before joining the newly formed Reach Separations in February 2012, I spent five years at AstraZeneca in analysis and purification (latterly as group lead in reversed phase and chiral purification). This experience gives me a good perspective of both the needs of “big pharma” and, more recently, the needs of a specialist separation solution provider. My ...


    By Waters Corporation

  • Ultra Fine Feed Hammer Mill

    About Ultra Fine Feed Hammer Mill SWFL series ultra fine feed hammer mill is a new grinding device which applies to all sizes of feed plants. It can grind all grain products such as corn, broomcorn, wheat, rice, etc. after sieving, iron removing and mixing stages. The ground products can be further processed as animal feed, especially suitable for shrimp, turtle, eel and other llittle ...


    By Allance Pellet Machinery

  • 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.

  • 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

  • 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

  • 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 ...


  • Filtration trends & application advice

    The most obvious evolutionary trend in filtration technology today is the capability to remove finer and finer particles from the process fluid stream. The rise of nanotechnology has created a need for removing particles of 100 nanometers or even smaller, and the filtration industry has responded with solutions capable of capture down to the ionic and atomic levels. Support for such small ...

  • 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 ...

  • 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.

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