Patent ID: 6063275
Filing Date: 2000-05-16
Classification: B01D

Abstract:
In a reverse osmosis system which includes reverse osmosis means for producing potable water and accompanying reject water, first conduit means for carrying the reject water to a backflow prevention device and second conduit means for carrying the reject water from the backflow prevention device to a drainage conduit for emptying into a sewer system, the backflow prevention device being characterized by an air gap operative to reduce to atmospheric pressure the pressure of the reject water downstream of the backflow prevention device, the improvement comprising:a water collection chamber defined by an outer wall mounted in fluid tight relation around the second conduit means, the second conduit means including an open portion opening into the water collection chamber whereby any excess flow of reject water from the backflow prevention device and any back flowing water from the drainage conduit is enabled to flow through the open portion and collect in the water collection chamber and, whereby in the absence of any excess flow or back flowing water, any water collected in the water collection chamber is enabled to drain out of the water collection device and into the drainage conduit.