Patent ID: 9044711
Filing Date: 2015-06-02
Classification: B01D,C02F,Y02W

Abstract:
1. An apparatus for recovering draw solution solutes from an osmotically driven membrane system, the apparatus comprising: an osmotically driven membrane system comprising a semi-permeable membrane having a first side in fluid communication with a first solution and a second side in fluid communication with a source of concentrated draw solution, where the osmotically driven membrane system receives the first solution and the concentrated draw solution and outputs a concentrated first solution and a dilute draw solution; a first distillation apparatus in fluid communication with the second side of the semi-permeable membrane, the apparatus comprising: a compressor coupled to the first outlet of the first distillation apparatus for receiving the vaporized draw solution solutes; and a second distillation apparatus in fluid communication with the first side of the semi-permeable membrane and configured for parallel operation with the first distillation apparatus, the second distillation apparatus comprising: