Introduction
Reverse osmosis technology is membrane sepration technique that is used with pre-treatment system to remove solid dissolved matters, organic matters, microorganism, bacteria and other impurities in water. It has features such as wide range of application, high degree of automation, small floor area, low energy consumption, and good effluent quality.

working principle
Reverse osmosis is the most sophisticated membrane separation process, applying an operating pressure on the water (concentrated solution) side to overcome the natural osmotic pressure, and when the operating pressure above the natural osmotic pressure is applied to the concentrated solution side, the natural flow of water molecules The reverse direction of the water molecules in the water (concentrated solution) through the reverse osmosis membrane to become dilute solution side of the purified water; reverse osmosis equipment can block all dissolved salts and molecular weight greater than 100 organic matter, but allows water molecules Through the reverse osmosis membrane desalination rate is generally greater than 98%, they are widely used in industrial water and electronic ultra-pure water preparation, drinking pure water production, boiler feed water and other processes, in the ion exchange before the use of reverse osmosis equipment can be significantly reduced Bottom operational water and wastewater emissions.

Applications
1. Electric power industry: boiler feedwater, cooling dam;
2. Electronic industry: ultrapure water in emiconductor industry, cleaning water for integrated circuit, formula water;
3. Food industry: formula water, production water;
4. Pharmaceutical industry: preparation of process water, preparation water, washing water, injection water and sterile water;
5. Beverage industry: formula water, production water and washing water;
6. Chemical industry: production water and wastewater treatment;
7. Drinking water project: preparation of ultrapure water, purification of drinking water;
8. Petrochemical: advanced treatmetn of oilfield injection water and petrochemical wastewater;
9. Sea water desalination: island region, coastal water-deficient area, ship, seawater oilfield and other water for life;
10. Environmental protection: bleaching precious metal in water, water recovery, realize zero emission or micro emission.

Equipment characteristics
Reverse osmosis (RO) technology is a highly efficient energy-saving technology. It relies on pressure to promote the separation of water and ions, so as to achieve the purpose of purification and concentration. The process without change, generally do not need to heat, low energy consumption, with low operating costs, pollution-free, easy to operate reliable, high water quality and many other advantages, and become the most water and brackish water desalination of the most energy-efficient technology. Has been widely used in medicine, electronics, chemicals, food, desalination and many other industries. Reverse osmosis technology has become the preferred water treatment technology in modern industry. Reverse osmosis (RO) technology has become an important part of membrane separation technology.

1. can be extracted from the sea water or brackish water;
2. easy to remove organic matter, bacteria and colloids and other impurities in water, access to high purity water;
3. because the reverse osmosis process is a physical process, there is no phase change, and thus energy saving;
4. Simple operation, high degree of automation;
5. Compact structure, small floor area and low cost;
6. As a kind of concentration method, it can recover valuable components dissolved in solution.