The water supply of the reverse osmosis device (Fig. 1) requires a pollution index SDI < 5. In order to ensure that the reverse osmosis membrane element is not fouled and blocked, the water supply passes through a security filter of 5μm filter element, and then is pressurized to the required working pressure by a high pressure pump.
The pressed water enters the reverse osmosis pressure vessel, which is equipped with one or various reverse osmosis membrane elements. The permeated water after passing through the membrane is the produced water that has been desalted, and the other part of concentrated water is discharged from the vessel.
Due to the different water quality, temperature and quantity, the membrane type, specification, quantity, arrangement, operation pressure and whether to add chemicals will be different for each set of reverse osmosis device, so the reverse osmosis device will determine its scale according to the specific situation.