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What is reverse osmosis system? Jan 16, 2018

The reverse osmosis system consists of a reverse osmosis membrane (RO), a high pressure pump and a security filter set up to protect the reverse osmosis membrane.

The basic working principle of reverse osmosis is to apply the special high-pressure water pump to add the raw water to 6-20 kg of pressure, so that the original water can infiltrate through the reverse osmosis membrane of 0.0001 micron under pressure.

Chemical ions and bacteria, fungi, and visions cannot be passed, with effluent discharged, only water molecules and solvents that are less than 0.0001 micron are allowed to pass.

The security filter is equipped with a filter core of 5 mu m.

These filters filter out particles larger than 5 mu m.

Household reverse osmosis equipment.jpg

For the downstream RO film to protect, otherwise the RO membrane surface is easy to scale.

The more commonly used type of osmosis membrane is the polyamide film, the film type is the roll type composite membrane, which can reach 99.5%.

Because the RO membrane is susceptible to water PH, chlorine and water temperature, the RO membrane has strict requirements for water quality before operation:

PH: 3 ~ 10

Residual chlorine value: < 0.1 mg/L

SDI15 value: < 5.0

The water temperature, 45 <

Any of the above indicators can cause deformation of the permeable membrane, which can affect the water quality and shorten the service life of the membrane.

And the different types of membrane have different requirements for water inlet water quality.

Confirmation can be made according to the instructions provided by RO membrane manufacturer before commissioning.


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