5 stage reverse osmosis Articles

  • Reverse Osmosis for WFI and PW

    The United States Pharmacopeial Convention Inc. (USP) has proposed new specifications for Water for Injection (WFI) and Purified Water (PW). These specifications will include quantitative conductivity, and total organic carbon (TOC) measurements will replace 100-year-old qualitative wet chemistry tests. The impetus behind these changes is to create a means of analysis that is less ...

  • 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

  • Application of forward osmosis in reusing the brackish concentrate produced in reverse osmosis plants with secondary treated wastewater as feed solution: a case study

    This study evaluated the feasibility of forward osmosis (FO) in diluting and reusing the concentrate produced in a reverse osmosis (RO) plant in James City County, VA. Secondary treated wastewater (STW) was used as the feed solution. Findings indicated that pH had slight effects on the water flux of the FO membrane. As the concentration of total dissolved solids (TDS) in the concentrate was ...


    By IWA Publishing

  • Occurrence of N-nitrosodimethylamine precursors in wastewater treatment plant effluent and their fate during ultrafiltration-reverse osmosis membrane treatment

    The formation of N-nitrosodimethylamine (NDMA) is of major concern among wastewater recycling utilities practicing disinfection with chloramines. The NDMA formation potential (FP) test is a simple and straightforward method to evaluate NDMA precursor concentrations in waters. In this paper we show the NDMA FP results of a range of tertiary wastewater treatment plants that are also the source for ...


    By IWA Publishing

  • Combined cycle power plant in southern india uses membrane desalination for boiler feed

    The Facility PPN, a 330 MW combined cycle power plant developed by PPN Power Generating Company, is located in Pillaiperumalnallur about 320 kilometers south of Chennai, India. It is one of the largest IPP power plants developed by an international consortium in India under a 30 year PPA with the state electricity board. The plant consists of a single dual fuel power block and ...

  • Membrane bioreactor application within the treatment of high-strength textile effluent

    A pilot-scale dual-stage membrane bioreactor (dsMBR) incorporating two ultra-filtration (UF) side-stream membrane modules was designed, constructed, operated and evaluated on-site for treating high-strength textile effluent. The effluent stream was characterised by a COD range of between 45 to 2,820 mg/L and an average BOD of 192.5 mg/L. The dsMBR achieved an average COD reduction of 75% with a ...


    By IWA Publishing

  • Selection and economical evaluation of solar desalination technologies via DesalSolar software

    Worldwide projection indicated that in 2020 the situation of water resources in Iran reach to scarcity. Besides, global warming and energy crisis have forced countries to use renewable energy resources. Solar desalination technologies particularly in remote area of Iran could be a method to emancipate from this crisis. In this paper, all kind of desalination technologies were reviewed. Then, ...


    By Inderscience Publishers

  • Water desalination price from recent performances: modelling, simulation and analysis

    The subject of the present article is the technical simulation of seawater desalination, by a one stage reverse osmosis system, the objectives of which are the recent valuation of cost price through the use of new membrane and permeator performances, the use of new means of simulation and modelling of desalination parameters, and show the main parameters influencing the cost price. We have taken ...


    By Inderscience Publishers

  • TB 62: Liqui-cel® membrane degassing modules improve ice production at the ice palace in moscow

    An innovative approach to high quality ice production has been adopted by the new Ice Palace in Moscow. In addition to hosting hockey matches, the arena also hosts many international events such as figure skating and short track competitions. To achieve high quality standards for the ice that is used in large ice arenas, Gelios Star, a Russian OEM, has designed a state-of-the-art water treatment ...

  • Waste water recycle system based on hero technology for reliance industries

    The Facility Reliance Industries, the flagship company of the Reliance Group, is India's largest private sector company with a significant presence across the entire energy chain and a global leadership across key product segments. It is the first private sector company from India to feature in the Fortune Global 500 list of 'World's Largest Corporations' The commissioning of this ...

  • Municipality of Barrows, Manitoba case study

    Situated some 500 km north of Winnipeg, the municipality of Barrows is home to about 300 inhabitants. Barrows has a school in the village with close to 100 students. The only available source of water supply for the municipality is an underground spring with a TDS (total dissolved solids) concentration exceeding 1900 mg/L making the water undrinkable (see Table I). At the request of John Brittain ...


    By H2O Innovation

  • Water treatment technology for produced water

    Large amounts of produced water are generated during oil and gas production. Produced water, as it is known in the oil industry, is briny fluid trapped in the rock of oil reservoirs. The objective of this study was to test produced waters from a Montana USA oilfield using a mobile station to design a plant to cost efficiently treat the produced water for agricultural irrigation. We used combined ...


    By IWA Publishing

  • TB 50: Taiwan o2 co2 removal case study

    A semiconductor plant in Taiwan is using Liqui-Cel® Membrane Contactors to remove dissolved gas from their ultra pure water (UPW) system. The UPW system is used to purify water used in the chemical mechanical polishingprocess (CMP) at the fab. The water system was designed and built by United Purification Technologies in Taichung Taiwan. The water system has two degasification stages. The first ...

  • Can saltwater quench our growing thirst?

    An increasingly water-stressed world takes a new look at desalination. It seems simple enough: Take the salt out of water so it’s drinkable. But it’s far more complex than it appears at first glance. It’s also increasingly crucial in a world where freshwater resources are progressively strained by population growth, development, droughts, ...


    By Ensia

  • Economic and Environmental Benefits Flow From Filtration Technology

    Crossflow filtration operations typically fall into one of four categories: microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and hyperfiltration more commonly known as reverse osmosis (RO). The most common of the operations is reverse osmosis due to its ability to remove dissolved impurities including dissolved salts. Crossflow filtration machines typically include the membrane ...


  • Two Case Histories of Industrial Water Reuse Via Membrane Technology

    Abstract This paper describes two successful applications of ultrafiltration (UF) and reverse osmosis (RO) membrane technology used to reclaim water, reduce waste water discharge costs. The first case history covers oily waste water treatment at a major aluminum beverage can manufacturing plant. The second case describes treatment of waste water from a multi-plating bath section of a major ...


  • Desalination pre‐treatment with LFNano

    EconoPure Water Systems EconoPure Water Systems designs and manufactures highly economical, scalable, low‐fouling. membrane systems. The Company leverages the proprietary low‐fouling nanofiltration. (“LFNano”) system consisting of a unique membrane element that is designed to avoid. particulate fouling, biofouling, and scaling. As the name suggests, the LFNano ...

  • Recycle/Reuse Based Effluent Treatment Plant - Textile Mills - Pakistan

    Setting trends in water resource management for Textile Waste Water Treatment with MBR Technology W.O.G Group became the trend-setter in water resource management through 5.5 MLD recycle/reuse based effluent treatment plant.   PREVIOUS TREATMENT METRICS: Effluent treatment capacity: 2500 m3/day Treated effluent quality: As per local discharge ...


    By WOG Technologies Inc.

  • Developments in string wound filter cartridges

    String wound filter cartridges are the most commonly used filtration media for reducing contamination in water and other liquids. Filtration applications include reverse osmosis and water softening prefiltration, boiler feed water for steam generation, cooling towers and heat exchangers, bottled water, edible oils, oil and gas production, process water for textiles, electroplating and anodizing ...

  • Sea water desalination for sagunto, Spain

    The Problem The Sagunto locality is situated in the region of the Camp of Morvedre in Spain. In recent years, a strong industrial growth has been anticipated in the zone. This has provoked a growing requirement for water in the Municipal Region of Sagunto. For this situation, the Sagunto Council planed to cover part of the future hydraulic deficit for short and long term with the ...

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