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Latest News
| Fleet Support Ltd chooses Freeston Water Treatment Ltd |
Each unit having a permeate flow rate 20M3/H and 16M3/H respectively. This contract had a value of £140,000 approx.
The semi-permeable membrane for reverse osmosis applications consists of a thin film of polymeric material a fraction of a millimetre thick cast on a fabric support. Commercial grade membranes have high water permeability and a high degree of semi-permeability; that is, the rate of water transport is much higher than the rate of transport of dissolved ions. This system uses Composite polyamide spiral wound membranes.
In order to develop sufficient water pressure to overcome the Osmotic pressure of the feed water and produce an acceptable volume of permeate, a three phase vertical multistage pump is used to boost the supply pressure by approximately 150-250 psi which results in the system running at 170-300psi in normal service.
This type of pump is both quiet and reliable in continuous applications requiring minimal maintenance with low energy costs.
For a Reverse Osmosis plant to function as efficiently as possible, the raw water feeding the system needs to have it's hardness reduced by a water softener,or inhibited with special chemicals that are dosed in to the supply upstream of the system.
The composite polyamide membranes used in high output Reverse Osmosis do not tolerate high levels of Chlorine. This is removed with a backwashing filter filled with Granular Activated Carbon.
This presigious contract was awarded to Freeston Water Treatment Ltd due to their long experience in this field of work and competitive edge.
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| Posted on 05/04/2007 |
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