Bubbles Posted November 23, 2006 Report Share Posted November 23, 2006 Anyone use these in conjunction with their RO units? http://www.advancedwaterfilters.com/merchant.mvc?Screen=PROD&Store_Code=AWF&Product_Code=ERP-1000 I'm particularly interested in the claimed 'Reduces drain wastewater by up to 80%' Quote Link to comment Share on other sites More sharing options...
Warren Posted November 23, 2006 Report Share Posted November 23, 2006 Looks like it will only have an effect if the system uses a pressurised permeate tank. Most of use probably collect the permeate in a big tank with no pressure. Mine dribbles (my RO that is) into a 2000L drum so the only pressure is the 1m head it has to overcome to get to the top of the tank. Waste water will only be reduced if there is back-pressure on the permeate side of the membrane. If there's no pressure then it will not help... I may have misunderstood how it works so if I have just shoot me... Quote Link to comment Share on other sites More sharing options...
Bubbles Posted November 23, 2006 Author Report Share Posted November 23, 2006 Waste water will only be reduced if there is back-pressure on the permeate side of the membrane. If there's no pressure then it will not help... So theoretically something as simple as a valve on the permeate side could provide the back-pressure? For such a simple device it appears to be quite handy Quote Link to comment Share on other sites More sharing options...
Bubbles Posted November 23, 2006 Author Report Share Posted November 23, 2006 This explains it better. http://www.marinedepot.com/md_viewItem.asp?idproduct=YSP5573 Important Note: The permeate pump is only effective when used with a bladder storage tank. Use of permeate pump does not have any advantage when being used with tanks or sumps open to atmosphere. So basically what you said Warren Quote Link to comment Share on other sites More sharing options...
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