| 摘要 |
A low-waste or no-waste reverse osmosis water supply system includes a pressurized permeate storage tank connected to the permeate outle t of one or more membrane elements with a valve operable by a user for tapping water on demand from the permeate storage tank. A pressurized waste storage tank i s connected to the waste outlet of the element. The waste water from the waste storage, instead of being wasted is supplied on demand to a toilet tank for supplying flush water to a toilet. The operation of the system to supply product and waste is controlled by a pressure detection switch responsive to the filling of the waste tank so that if the system operates with the product tank full all water is fed t o waste. The system is controlled by operating a pump which draws waste water away from t he waste side at a sufficient rate, substantially independent of the pressure i n the waste tank, to prevent accumulation of contaminants on the waste side. A bypass is provided to supply water from the inlet to the toilet tank if temporarily insufficient is available from the system. |
