Patent ID: 8696896
Filing Date: 2014-04-15
Classification: B01D,C02F

Abstract:
1. An apparatus for treating a liquid containing impurities, comprising: a filtering chamber for receiving liquid containing impurities, the filtering chamber including a lower portion containing granular media and configured to permit the granular media to interact with the liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section in fluid communication with the filtering chamber for receiving the filtrate, the filtrate section being in fluid communication with a first outlet for outflow of the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media from the lower portion of the filtering chamber to a granular media washer; a reject section in fluid communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer, the reject section being in fluid communication with a second outlet for outflow of a portion of the reject mixture; a valve disposed at the second outlet; and a control unit that is configured to: