Osmosis is the flow of solvent through a semi-permeable membrane, from a dilute solution to a concentrated solution. This flow results from the driving force created by the difference in pressure between the two solutions. Osmotic pressure is the pressure that must be added to the concentrated solution side in order to stop the solvent flow through the membrane.
Reverse osmosis is the process of reversing the flow, forcing water through a membrane from a concentrated solution to a dilute solution to produce filtered water. Reverse osmosis is created when sufficient pressure is applied to the concentrated solution to overcome the osmotic pressure. This pressure is provided by feed water high pressure pumps.
Typically, 95% of dissolved salts are reduced from the brine. All particulates are removed. However, due to their molecular porosity, RO membranes do not remove dissolved gases, such as Cl2, CO2, and O2.
RO Membranes. The two most common RO membranes used in industrial water treatment are cellulose acetate (CA) and polyamide (PA) composite. Currently, most membranes are spiral wound type. In the spiral wound configuration, a flat sheet membrane and spacers are wound around the permeate collection tube to produce flow channels for permeate and feed water. This design maximizes flow while minimizing the membrane module size.
Features of ZION ENVIRO R O Plants
Optimum water quality is produced by the TFC (thin film composite) RO membranes.
Very high quality imported vertical multistage, S S 316 High pressure pump are used.
ASME Code FRP, RO pressure vessels
High Pressure and low pressure switches are provided for safe run.
PVC low pressure feed, product and reject piping, 316 stainless steel high pressure piping
Monitoring devices and instruments are provided.
Manufactured with high quality components and membranes.
Equipped with suitable pretreatment.
User friendly Microprocessor / PLC based electrical control devices.
Available from 1 mᶟ/hr to 100 mᶟ/hr capacities.
Can be used to treat even high salinity water.
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Chemical Dosing System