Patent ID: 8889001
Filing Date: 2014-11-18
Classification: A01G,B01D,C13B

Abstract:
1. A maple sap reverse osmosis system comprising: a feed pressure pump configured for receiving maple tree sap; a filter bank; at least one pressure pump operatively connected to the feed pressure pump through the filter bank; a plurality of recirculation pumps operatively connected to the at least one pressure pump, each recirculation pump having a housing having an input positioned at a bottom portion of the housing, a permeate output and a concentrate output, the housing of each recirculation pump enclosing a membrane producing permeate and concentrate from the maple sap, the housings of the plurality of pressure pumps being serially connected, from an entrance position housing to an exit position housing, through associated inputs and concentrate outputs; and an air inlet operatively connected to the exit position housing; wherein the housings of the plurality of pressure pumps can be completely drained of liquid through the input of the entrance position housing.