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Posted By :
karthika Posted Date :
15-04-2010 |
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What is required to install and use a reverse osmosis system? |
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The reverse osmosis system itself is fairly simple, consisting of a series of tube containing the membranes with a high pressure pump to force the water through the system. Pretreatment is required for all systems which is designed to eliminate slit (suspended solids), water hardness and chlorine and other oxidizers. The schematic shows a simplified front end reverse osmosis system where the city water is filtered, softened to remove hardness, the carbon is used to remove the city chlorination (membranes are sensitive to oxidizers). An alternative would be to dose the system with chemicals to remove the chlorine and hold the hardness ions in solution.
After the carbon filter, the water is passed through the membranes where the concentrate is recycled back to the front of the system for another pass and a bleed is taken off this line to drain. This recycling allows very high system efficiencies.
The permeate line will have a TDS (total dissolved solids) level of about 4% or less of the incoming water (membrane dependent). A sidestream off this line feed a DI bottle service for DI water. The TDS is only 4% of the incoming water so the DI bottles will last 25 times longer!
Answered By :
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