Reverse osmosis membranes
Waterequip's definition of Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to separate ions, unwanted molecules and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property that is driven by chemical potential differences of the solvent, a thermodynamic parameter. Reverse osmosis can remove many types of dissolved and suspended chemical species as well as biological ones (principally bacteria) from water, and is used in both industrial processes and the production of potable water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective", this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as solvent molecules, i.e., water, H2O) to pass freely
Filmtec membrane elements are an industry leader in reliability and production of high quality water for industry. Filmtec membranes are used in a wide range of applications to include food industry, municipal drinking water, medical and demineralization.
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LP series (low pressure) aromatic polyamide RO element is developed by VONTRON for treatment of brackish water. It has the characteristics of low-pressure in operation, a high permeate flow and excellent rejection performance in removal of solvable salts, TOC, SiO2, etc.
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Independently developed by Vontron, the RO element is designed for treatment of water resources containing oxidant substances and high microbe contamination. Working under extra low pressure, it is applicable to water purifying for residence, hospital and laboratory.
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