Reverse osmosis water purification apparatus does not discharge or recycle water passing across membrane but accumulates it for directing forcefully at membrane to remove impurities

摘要

A reverse osmosis water purification apparatus does not discharge or recycle water passing across membrane (3) but accumulates it under pressure in compartment (7). When given volume has accumulated or pressure rises, a valve (10) is opened and this volume is directed with force towards membrane. This vigorously brushes impurities from membrane so they can be discharged.