membrane performance Articles
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Evaluating impact of fouling on reverse osmosis membranes performance
Abstract Membrane fouling is commonly defined as an undesirable formation of deposits on mem- brane surfaces and it is considered a major problem in most brackish, seawater, and waste water reclamation applications. Depending on nature of the scale and foulant, fouling pro- cesses will lead to decreased membrane fluxes, increased pressures needs, and/or increased permeate conductivity. In some ...
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SterliTech Tips: All Things Flat Sheet Membranes
Pre-Conditioning, Use, and Preservation What is membrane preconditioning and why is it recommended to precondition new flat sheet or spiral wound membranes prior to use? Membrane preconditioning is a filtration step using deionized water as feed solution and is typically performed at a pressure equal to or higher than the anticipated testing pressure. During this process membrane pores are ...
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Membrane process for spring water treatment in the Tula Valley: assessment of physicochemical and microbiological parameters in a non-conventional water source
A nanofiltration (NF) membrane pilot plant was tested to treat water from a spring located in the Tula Valley. Conventional physicochemical parameters and the pathogenic content were analyzed at the inlet and outlet (permeate) of the process. Ninety-five per cent removal of heterotrophic bacteria was obtained by the membrane and complete removal of all other pathogens was achieved. The membrane ...
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Forward osmosis desalination from laboratory to market
A two-step forward osmosis (FO) desalination process combining both FO and reverse osmosis (RO) systems has been developed by the Centre for Osmosis Research and Applications at the University of Surrey and commercialised by Modern Water plc. In the FO + RO process seawater was used as feed water (FW) and a concentrated aqueous solution was used as a draw solution (DS). By taking ...
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Samyang Corporation, Expansion of global market by launching RO membrane and EDI
- Following ion exchange resin, RO membrane, and EDI have been released.- Establishing three key materials for water treatme- Becoming a comprehensive solution provider through newly launched products and a new dedicated organization, “Water Solutions PU (Performance Unit)”. Samyang Corporation, Korea's first company to develop ion exchange resin and a leader in the field of industrial water ...
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On the performance limitation of reverse osmosis water desalination systems
The performance of Reverse Osmosis (RO) water desalination processes was investigated using a simulated brackish water plant based on spiral-wound membranes. A semi-rigorous mathematical model was employed in the simulation to calculate the water and salt fluxes at any point along the filtration channel. The effects of two key parameters, namely the transmembrane pressure and membrane surface ...
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All you Need to Know About Membrane Distillation: Applications, Filters, and Lab Setup
What is Membrane Distillation? Membrane Distillation (MD) is a relatively new and promising separation technology that is an alternative to more energy intensive methods such as reverse osmosis or distillation. MD is a thermally driven process where only vapor molecules transfer through a hydrophobic (water repellent) microporous membrane. A typical membrane distillation ...
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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 ...
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Reuse Treatment of Cooling Tower Sewage in Power Industry
For a long time, organic ultrafiltration membrane has been considered as an economical and effective traditional treatment method in the treatment of cooling tower sewage in power plants. In such applications with high pollution blockage tendency, the effect of organic membranes may be difficult to predict: more frequent chemical cleaning is usually required, resulting in longer downtime, lower ...
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Application of forward osmosis membrane technology for oil sands process-affected water desalination
The extraction process used to obtain bitumen from the oil sands produces large volumes of oil sands process-affected water (OSPW). As a newly emerging desalination technology, forward osmosis (FO) has shown great promise in saving electrical power requirements, increasing water recovery, and minimizing brine discharge. With the support of this funding, a FO system was constructed using a ...
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Power Plant Improves Operating Efficiency with Culligan Matrix Solutions
Challenge A large chemical manufacture was challenged with boiler tube failures in its power plant, resulting in costly repairs and down time. The boiler tube failures were a result of the incoming water quality to the power plant. Until recently, the boiler make-up water was treated with a combination of carbon media filtration and softening. As a result less than 50% of condensate was returned ...
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How to Properly Maintain the High-Pressure Pump on Your Watermaker
If you work on or maintain a boat, offshore rig, or offshore oil or gas production platform, you know that one of your most important consumables is fresh, potable water. The saltwater with which you’re surrounded is filled with not only salt but also refuse, seaweed, silt, and other contaminants that can make it unsafe for regular use. Through the process of reverse osmosis, you can take ...
By H2O Inc.
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