membrane antiscalant Articles

  • Application of the membrane fouling simulator to determine biofouling potential of antiscalants in membrane filtration

    In treatment of groundwater with reverse osmosis, the applied antiscalant can significantly contribute to the formation of biofouling, especially when legislation enforces the use of biodegradable, phosphorous-free products. As an alternative to extensive piloting, the use of the membrane fouling simulator (MFS) is proposed here to assess the biomass growth potential of different antiscalants. ...


    By IWA Publishing

  • Cost saving case study using a calcium sulphate specific antiscalant

    Abstract Extensive extraction from aquifers often leads to deterioration in water quality. This is usually seen as an increase in the soluble salt levels which, over time, has a detrimental effect on membrane performance. A limiting factor in the efficiency of membrane operation is the recovery rate that can be achieved, particularly with ‘brackish’ water operation. A high ...

  • High performance boron removal from seawater by two-pass SWRO system with different membranes

    Boron in the desalinated water produced by the seawater reverse osmosis (SWRO) system is one of the most challenging issues for drinking or irrigation water uses. In recent years, many post-treatment methods and designs for boron elimination have emerged and attracted lots of attention, but only a few cases have demonstrated high performance and economic efficiency. The main aim of this work was ...


    By IWA Publishing

  • Inhibitors for CaCo3-scaling in reverse osmosis-plants - influence of suspended matter on membrane clogging

    Abstract Calcium carbonate (CaCO3) is the most common source of mineral scaling in reverse osmosis plants, and it is a standard approach to add so-called anti-scalants to avoid membrane blocking. Although anti-scalants are used for many years, it remains a challenge to determine the most effective anti-scalant and its necessary dosage for a given water. The reason why, is the ...


    By Kurita

  • Theoretical and practical experience of calcium phosphate inhibition in RO waters

    The increasing trend over the last ten years to use waste water as a feed source for reverse osmosis membrane plant has resulted in an increase in calcium phosphate scaling on membrane surfaces. This is due to much higher levels of phosphate in waste water typically 10-30 mg/l as compared with a groundwater source which may have only 1-5 mg/l of phosphate. These higher phosphate levels resulting ...

  • Innovations in the inhibition and cleaning of reverse osmosis mebrane scaling and fouling - Case Study

    Abstract: Scaling and fouling of membranes are an on-going performance issue for most plants This presentation outlines innovations in speciality chemicals designed to inhibit membrane scaling and fouling and to clean membranes where deposition has occurred. High phosphate waste water reuse RO plant – There is an increasing trend to treat recycled waste water and use ...

  • Reusing water for industrial processes and irrigation in Saudi Arabia

    Water is a scarce resource in Saudi Arabia and the public administration and private companies implement water reuse whenever possible. A reverse osmosis plant installed in the Eastern Province of Saudi Arabia helps to treat industrial waste water streams to quality levels that permit water reuse for industrial applications and irrigation. Kemira KemGuard antiscalant is used to prevent deposit ...

  • Drinking Water Treatment Municipality of Sainte-Geneviève de Batiscan, Quebec

    A number of Quebec municipalities are confronted with feedwater problems of a bacteriological or physicochemical nature hardness, manganese, iron, dissolved solids) in the production of their drinking water. In many cases, these water sources do not meet government quality standards for drinking water. Membrane filtration preceded by the appropriate pretreatments can be a solution. Piloting ...


    By H2O Innovation

  • Reverse Osmosis Technology - Kuriverter Rc.

    Summary Applications using Reverse Osmosis membrane technologies are everywhere in our lives – from tiny under counter units polishing our drinking water through industrial units preparing water for processes or purifying effluents for reuse and massive seawater desalination plants producing thousands of m³ of drinking and irrigation water every day. The membranes used in this ...


    By Kurita

  • Reverse Osmosis Technology – KURIVERTER RC - Case Study

    Summary Applications using Reverse Osmosis membrane technologies are everywhere in our lives – from tiny under counter units polishing our drinking water through industrial units preparing water for processes or purifying effluents for reuse and massive seawater desalination plants producing thousands of m³ of drinking and irrigation water every day. The membranes used in this ...


    By Kurita

  • 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 ...


  • Sustainable groundwater management using reclaimed water: the Torreele/St-André case in Flanders, Belgium

    The Torreele facility produces infiltration water for indirect potable re-use through artificial recharge of the dune aquifer of St-André. The secondary wastewater effluent is treated by ultrafiltration (UF), using the submerged ZeeWeed system, prior to reverse osmosis (RO), using brackish water low energy membranes. The Torreele experience showed that combining UF and RO enables the ...


    By IWA Publishing

  • Commercial SWRO Machine, Philippines

    INTRODUCTION In April 2013, Pure Aqua successfully manufactured and supplied a commercial SWRO machine to a major company in the Philippines. The machine came complete with an advanced microprocessor control along with pretreatments consisting of a ...


    By Pure Aqua, Inc.

  • RO Feedwater: Treat It Right

    Summary Crossflow membrane filtration systems, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF), are good alternatives to traditional filtration and chemical treatment. However, to get the best performance from them, careful attention must be paid to feedwater conditions. Pretreating feedwater can lengthen the life of membrane elements, improve the quality of the ...

  • Reducing operational costs in high silica, 18,000m3/day BWRO in Arica, Chile

    Abstract The desalination industry has significantly evolved in the last decade with 33million m3/day of additional desalination capacity now operating. One third is using membrane technology with 6,458 Reverse osmosis plants coming on-line. More than twice as many brackish water RO plants than sea water plants have been built since the first plants were commissioned in the late ...

  • 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

  • Commercial RO Package, Jordan

    INTRODUCTION In April 2013, Pure Aqua, Inc. designed and manufactured a commercial RO package to a major hotel in Jordan to remove, chlorine, TDS, and odor from well water. The package consisted of pre and post treatments including a multimedia filter and chemical dosing systems. The brackish ...


    By Pure Aqua, Inc.

  • Sea Water Desalination - Technical Article

    Sea Water Desalination is a specific process involving molecular separation via membrane technology to reduce the dissolved salt and mineral content of sea water to a level suitable for human and animal consumption, commercial/industrial and irrigation uses. This process involves three water streams namely sea water as the intake source, Product / Permeate water of potable drinking water quality ...

  • Red Rock Correctional Facility, Arizona - Case Study

    In 2013, AdEdge Water Technologies was contacted by Valentine Engineering to participate in a design/build project that was ongoing at the Red Rock Correctional Facility in Eloy, Arizona. CCA is the parent company and is an operator of privately owned and operated prisons throughout the United States. CCA signed an agreement with the State of Arizona to administer up to 1,500 prisoners at the Red ...

  • The DNA Revolution for Water Professionals

    Imagine trying to solve a problem when you are provided just 1% of the total data. This is essentially the case in analyzing water and wastewater microbiomes. Conventional microbiological testing methods such as culture and microscopy can identify only about 1% of microorganisms that are contained in a ...


    By LuminUltra Technologies Ltd.

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