Knowledge of cleaning and maintenance of reverse osmosis equipment-Yuanlai Water Treatment

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Knowledge of cleaning and maintenance of reverse osmosis equipment

Released Date: May 06,2015 Article Source: Yuanlai Water Treatment

When the reverse osmosis equipment (or device) shows the following symptoms, chemical cleaning or physical flushing of the reverse osmosis equipment is required.

When reverse osmosis equipment(Or device)When the following symptoms occur, chemical cleaning or physical flushing of the reverse osmosis equipment is required:

Under normal feed water pressure, the water production of reverse osmosis equipment decreases compared to the normal value10～15%.

To maintain a normal water production volume, the feed water pressure is increased after temperature correction10～15%.

The quality of the produced water has declined10～15%The salt penetration rate increases10～15%.

Increase in water supply pressure10～15%.

The pressure difference between each section of the reverse osmosis system has increased significantly

Reverse osmosis membrane fouling can lead to a decrease in water production, a decline in desalination rate, and an increase in the pressure difference between the inlet and the concentrated water. Acid and alkali agents are used for cleaning reverse osmosis membranes(ph2-12Under certain conditions)The temperature of the membrane cleaning solution is high45℃. A lot of pollution, especially slime, accumulates over time and is compressed and thickened, which increases the difficulty of cleaning and greatly prolongs the cleaning time.

Flowchart of reverse osmosis cleaning equipment

Reverse osmosis cleaning equipment

1.Cleaning the medicine tank: Chemical cleaning of the medicine tank is usuallyPEorFRPThe material is durablePHScope1-12.

2.Clean the heating device: The cleaning temperature should be as high as possible, for example20-40℃. No more chemical cleaning10℃The following is carried out because the cleaning efficiency is very low. Because a heating device is also required during cleaning.

3.Cleaning agent: Strong acids and alkalis should be selected for cleaning(Such as hydrochloric acid, phosphoric acid, citric acid, sodium hydroxide, etc)Therefore, the choice of chemistry is very important. Sometimes, improper selection of chemicals can cause membrane contamination or even damage.

4.Cleaning pump: The cleaning is an acid and alkali resistant pump with a flow rate12-15m3/hPressure20-30meter.

5.When cleaning, the corresponding pipes, valves and pressure gauges must be installed. Connect the outlet of the pump to the inlet of the membrane, connect the concentrated water pipe to the medicine tank, and install a ball valve before connecting it to the raw water tank. Then, connect the medicine tank and the pump.

Keywords: Water Softening Equipment Automatic Water Softener Reverse Osmosis Equipment Manufacturer of Water Treatment Equipment

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