ENERGY RECOVERING DEVICE IN MEMBRANE SEPARATING APPARATUS

摘要

PURPOSE:To obtain realized stable rate of recovery of permeated water and recovery of energy with high rate of recovery by combining an outlet port of a feeding device to an inlet of a separation membrane module and combining an outlet of the concentrated water to an inlet of a driving machine. CONSTITUTION:Necessary pressure on the surface of a membrane is generated by the difference of pressure receiving area between a cylinder 1 and a cylinder 2 when fluid B is going to flow into a separating membrane 3 from the cylinder 1 by the driving force F applied to the cylinder 1. The fluid discharged from the cylinder 1 flows into the cylinder 2 by the pressure at the membrane surface while maintaining a high pressure, and is discharged to the outside of the system after driving a piston 8. In this stage, the driving of a piston 7 connected to the piston 8 with a common driving shaft 9 is reinforced and recovery of energy is achieved.