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What is a Reverse Osmosis Plant?

Author: Site Editor     Publish Time: 2022-05-16      Origin: Site


Reverse osmosis device is the original water through the fine filter, particle activated carbon filter, compressed activated carbon filter, etc., and then through the pump pressure, using the pore size of 1/10000μm (equivalent to 1/6000 of the size of E. coli, 1/300 of the virus) of the reverse osmosis membrane (RO membrane), so that the higher concentration of water into a low concentration of water, while industrial pollutants, heavy metals, bacteria, viruses and a large number of At the same time, industrial pollutants, heavy metals, bacteria, viruses and other impurities mixed into the water are all isolated, so as to achieve the physical and chemical indicators and health standards for drinking, the output to the purest water, is the best choice for the human body to replenish quality water in a timely manner. As the purity of the water produced by RO technology is relatively high in all the water technology mastered by human beings, the cleanliness is almost 100%, so people call this kind of water production machine as reverse osmosis pure water machine.

The reverse osmosis unit applies membrane separation technology and can effectively remove charged ions, inorganic substances, colloidal particles, bacteria and organic substances from water. It is the best equipment for high purity water preparation, brackish water desalination and wastewater treatment process. It is widely used in electronics, medicine, food, light textile, chemical industry, power generation and other fields.

Bionic Origin

In 1950, the American scientist DR. S. Sourirajan, while observing gulls, noticed that they would sip a large mouthful of seawater when skimming the surface, and after a few seconds interval, spit out a small mouthful of seawater. He was perplexed because a terrestrial lung-breathing animal would never be able to drink seawater with a high salt content. The gull's larynx is made up of layers of mucous membrane tissue, which is then pressurised when the seawater is inhaled by the gull, and the water molecules are transformed into fresh water through the mucous membrane. The gull absorbs the fresh water filtered through the mucous membrane tissue into its body and then spits out the remaining highly concentrated seawater. This is the basic theoretical structure of the reverse osmosis method.

System Composition

  • Pretreatment system: generally includes raw water pump, dosing device, quartz sand filter, activated carbon filter, precision filter, ultrafiltration, etc. Its main function is to reduce the pollution index (SDI), residual chlorine, algae, bacteria and other impurities in the raw water to meet the feed water requirements of reverse osmosis. The equipment configuration of the pre-treatment system should be determined according to the specific conditions of the raw water.

  • Reverse osmosis device: mainly includes multi-stage high pressure pump, reverse osmosis membrane element, membrane shell (pressure vessel), bracket and other components. Its main role is to remove impurities in the water, so that the output water meets the requirements of use.

  • Post-treatment system: It is a configuration added in the case that reverse osmosis cannot meet the water requirements. It mainly includes one or more types of equipment such as mixed bed, sterilisation and EDI. The post-treatment system can improve the water quality of reverse osmosis to meet the requirements of use.

  • Cleaning system: mainly consists of cleaning water tank, cleaning water pump and precision filter. When the reverse osmosis system is polluted and the water output index cannot meet the requirements, chemical cleaning of the reverse osmosis is required to restore its efficacy.

  • Electrical control system: It is used to control the normal operation of the whole reverse osmosis system. It includes instrument panel, control panel, various electrical protection, electrical control cabinet, etc.


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