Reverse osmosis treatment process:

The reverse osmosis process includes two parts: pretreatment and membrane separation. Pre treatment methods include physical methods (such as precipitation, filtration, adsorption, heat treatment, etc.), chemical methods (such as oxidation, reduction, pH adjustment, etc.), and photochemical methods. The choice of pretreatment method depends not only on the physical, chemical, and biological characteristics of the raw water, but also on the membrane and device construction.

As a separation, concentration, and purification method, reverse osmosis commonly has several forms of processes, including one-stage, one-stage multi-stage, multi-stage, and cyclic. The primary processing flow involves passing through the reverse osmosis device in one go, which is simple and consumes less energy, but the separation efficiency is not very high. When the first level external treatment cannot meet the purification requirements, first level multi-stage treatment can be used. In a multi-stage process, use the concentrated solution from one stage as the inlet for the second stage, use the concentrated solution from the second stage as the inlet for the third stage, and so on. As the number of segments increases, the volume of the concentrated solution decreases, the concentration increases, and the water recovery rate increases. In a multi-stage process, using the purified water from the first stage as the inlet for the second stage improves the quality of the purified water. Due to the significant hydraulic losses caused by the first stage process, booster pumps are installed between stages or sections in practical applications.

Composition of reverse osmosis equipment:

1.Preprocessing section: including source water booster pump, sand and gravel filter, activated carbon filter, system pipeline, and system pressure gauge.

2.Reverse osmosis section: including protective process unit, multi-stage high-pressure pump, PO membrane housing, reverse osmosis membrane, low-pressure protection switch, inlet control valve, outlet control valve, low-pressure gauge, high-pressure gauge, inlet solenoid valve, discharge solenoid valve, pure water flowmeter, wastewater flowmeter conductivity meter, electrical control system, high-pressure pipeline section, and system pipeline section.

3.Terminal section: including pure water transfer pump, terminal pure water tank, ultraviolet sterilizer, terminal filtration, and rack.

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