With the development of technology, many industrial processing plants currently have high requirements for the water quality of their products. The water resistivity of pure water needs to reach around 18M Ω· cm. If the resistivity of industrial pure water needs to reach around 18M Ω· cm, it is mainly for desalination treatment of the incoming raw water quality. Below is an introduction to a reverse osmosis desalination water treatment equipment used in industry.
The reverse osmosis desalination water treatment equipment mainly uses ion exchange water treatment technology to desalinate pure water. The equipment consists of several parts, including a multi-stage pre filtration system for raw water, a reverse osmosis system, a nuclear grade mixed bed resin purification system, and an ultraviolet digestion system.
Industrial principle of desalination and water purification equipment:
Raw water pretreatment - reverse osmosis water treatment technology - electrodeionization (EDI) system - ion exchange desalination treatment.
The equipment uses ion exchange resin to exchange the same electrical ions contained in water with each other to achieve softening, alkali removal, salt removal, etc. The principle equation of water treatment reaction (represented by sodium chloride (NaCl) as inorganic salts in water): R-H+R-OH+NaCl=R-Na+R-Cl+H2O;
In addition to using ion exchange water treatment technology, reverse osmosis desalination equipment can also choose two-stage reverse osmosis and EDI water treatment methods.
Industrial pure water production can also choose to use integrated water purification equipment, which consists of a centralized pretreatment system, RO system, ultrapure water system, and post-treatment system. The equipment is easy to operate and can be extended in service life by regular maintenance in the later stage.