reverse osmosis Articles

  • RO, UF, MF World Markets Report

    Provides continually updated analyses and forecasts of cross flow microfiltration, reverse osmosis, and ultrafiltration systems and membranes in 80 countries and regions with separate forecasts for each application from desalination to wine ...


    By The McIlvaine Company

  • 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 ...

  • Electrodeionization - Ultrapure water

    Continuous Electrodeionization Process The continuous electrodeionization process (CEDI),  is a system that uses ion exchange resins and electricity  for the production of ultrapure deionized water without chemical processes and without production stops. SIMPEC uses modular systems for the electrodeionization processes. The CEDI modules are installed at the exit ...


    By SIMPEC S.r.l.

  • Reverse osmosis and removal of minerals from drinking water

    Reverse Osmosis will generally remove salt, manganese, iron, flouride, lead, and calcium (Binnie et. al., 2002).  Most mineral constituents of water are physically larger than water molecules and they are trapped by the semi-permeable membrane and removed from drinking water when filtered through a RO (AllAboutWater.org, 2004).  Meanwhile, consumers are concerned about the removal of ...


    By IWA Publishing

  • Reverse Osmosis System Design

    Reverse Osmosis (R.O.) is currently used in various applications ranging from small under the sink drinking water systems to large municipal drinking water applications.  The technology is widely used and accepted as it removes both dissolved ionic and organic impurities.  This article will focus on the application of reverse osmosis membranes and discuss factors that should be ...


    By Agape Water Solutions, Inc.

  • Kurita new case study available - Successful treatment with Kuriverter IK-110 in an industrial RO application

    A reverse osmosis plant for the industrial water preparation faced a biofouling problem which involved a large number of annual cleanings. The feed water used in the RO plant is SWRO and the permeate is used as make up water for the boiler system. Learn how the treatment with Kuriverter IK 110 leads to less annual cleanings and RO replacement. Download our ...


    By Kurita

  • 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 ...

  • Case Study: Nigerian Drilling Platforms

    Wastewater on a self-contained drilling platform comes from several sources. The following examples are samples obtained from the seven oil-drilling platforms off of the coast of Nigeria. The first platform had samples from the industrial laundry, kitchen, emulsified, cutting oily-water and drilling mud. The samples were treated individually and then combines so as to simplify the platform ...


    By Integrated Engineers Inc.

  • Experiences with the seawater reverse osmosis plant at the Kudankulam nuclear power plant

    The Seawater Reverse Osmosis Plant (SWROP) of the Kudankulam nuclear power plant is located at Anuvijay township, Chettikulam, Tirunelveli District, Tamil Nadu. The objective is to produce 2400 M³ of potable water per day. The plant consists of four streams, each having a capacity of 25 M³/h. Each stream has nine pressure tubes in parallel and each pressure tube has six polyamide spiral-wound ...


    By Inderscience Publishers

  • Don`t fall foul of biofilm through high TEP levels

    Biological fouling caused by the growth of biofilm on Reverse Osmosis (RO) and nanofiltration (NF) membranes can be amajor problem in desalination and water purification plants. Biofilm development lowers filtration efficiency and eventually the membranes must be replaced. Biofilm is usually made up of layers of assorted microbial populations, mostly bacteria,held together in a sticky matrix of ...

  • VSEP helps Shanghai automotive factory achieve a 100X reduction in C.O.D.

    The wastewater from the production of automotive parts can be difficult to treat due to its varied chemical composition. This type of wastewater contains high levels of COD that need to be reduced to meet local sewer specifications. The typical treatment scheme could consist of chemical treatment followed by a lot of pre-treatment steps and eventually a reverse osmosis membrane system. This type ...


    By New Logic Research, Inc.

  • The Missing Piece: Utilizing evaporation technology to dewater RO reject wastewater

    Reverse Osmosis reject often has high salinity making it prohibitive for discharge to the local sewer facility and expensive to have hauled away. The white paper discusses the advantages of evaporation in general, as well as the differences between Thermal Evaporators and Mechanical Vapor Compression (MVC) Evaporators. Also discussed are the technical details of RO reject water chemistry as ...


    By ENCON Evaporators

  • Performance benchmarking of polyamide composite Sea water reverse osmosis membranes

    Standardization of reverse osmosis (RO) membrane system allows transparency and accountability in performance benchmarking of different membrane elements, especially when a new product is introduced to the market. In the current study, we compared performance of three polyamide composite RO membranes (one from new entrant in the market, the other two are established manufacturers) for seawater ...


    By IWA Publishing

  • Brackish water desalination technologies

    This paper classifies various types of water according to their total dissolved salt content. It then discusses various technologies for brackish water desalination and their advantages and disadvantages. These technologies include different thermal processes as well as membrane processes. The thermal processes include Multistage Flash (MSF), Multieffect Distillation (MED) and Vapour Compression ...


    By Inderscience Publishers

  • Nuclear desalination complexes based on PWR and gas cooled reactors

    This report is prepared based on the results of activities performed in Russia on the development of energy desalination complexes (EDCs) with different reactor plants. The activities were aimed at the development of conceptual designs for EDCs and evaluation of the EDC from a technical-economic point of view, commercial attractiveness and economic efficiency based on reactor plants such as ...


    By Inderscience Publishers

  • Reverse osmosis water recycling plants in Chennai & Gujarat, India

    GEA designed and built eight (8) drinking water RO plants for domestic use in Chennai and Gujarat, which have been experiencing serious drought conditions for the past 3 years. These residential private plants range from 2,000 to 15,000 GPD, typically averaging about 12,500 GPD. Source water is marginal or unsuitable ground or river water. Most systems have had a two-pass design to achieve ...


    By GEA Engineering PC

  • Energy cost for desalination evaporation versus reverse osmosis

    The selection of the appropriate desalination technology between evaporation and reverse osmosis is grounded on several factors, including investment cost, maintenance cost, degree of availability, heaviness of the duty, and the required purity of the desalinated water. The main factor is often the running cost of the plant, and specifically the cost of the consumed energy. This paper intends to ...


    By Inderscience Publishers

  • Reference: Well water treatment for ethanol production

    Europe’s largest ethanol plant in the future requires different water qualities for several processes. A state-of-the-art turn-key water treatment system from ProMinent with reverse osmosis plants and water softener fulfils this challenge. Turning corn into ethanol In Dunaföldvár, south of the Hungarian capital Budapest, the company Pannonia Ethanol Zrt. ...


    By ProMinent GmbH

  • Municipal water treatment plant

    Location: Blueberry, B.C. Owner: Blueberry River Indian Band Description: The poor raw water quality of the wells supplying this community necessitated the installation of a sophisticated 110 m3/d water treatment plant. It incorporates an aeration tower for stripping natural gas and hydrogen sulphide. It is followed by sand filtration for ...


    By NovaTec Consultants Inc.

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