| 摘要 |
In order to prevent sudden changes in pressure on the reverse osmosis membrane module when starting operation and effectively prevent the deterioration of the physical properties of the reverse osmosis membrane, the reverse osmosis membrane separator provided with an energy recovery unit is characterized in being provided with: a high pressure pump (1) for raising a portion of the solution to be treated to a prescribed pressure and supplying same to the reverse osmosis membrane module unit (2); an energy recovery unit (3) for raising the pressure of the remaining solution to be treated using the pressure of the concentrated water discharged from the reverse osmosis membrane module (2); a pressurizing pump (4) for further raising the solution to be treated, which has been pressurized in the energy recovery unit (3), to a prescribed pressure and supplying same to the reverse osmosis membrane module unit (2); a flow-regulating valve (6) for adjusting the flow of the solution to be treated, which has been discharged from the high pressure pump (1); a bypass flow channel from the flow-regulating valve (6) for bypassing the reverse osmosis membrane module unit (2); and a flow-regulating valve (8) that is provided in the bypass flow channel and adjusts the bypass volume of the solution to be treated. |
