Ion exchange resins often contain small amounts of low molecular weight polymers and monomers that are not involved in polymerization. So when the new ion exchange resin and water and acid, alkali and other solutions in contact, these low molecular weight polymer and monomer will be transferred into the solution, affecting the quality of water treatment.

Analysis on the Advantages of Separation Process of Reverse Osmosis Ultra - pure Water Equipment

The application of reverse osmosis water treatment equipment (membrane separation) technology makes reverse osmosis ultra-pure water equipment from the traditional cation exchanger, decarburization, anion exchanger, composite ion exchanger has been a progress. In recent years, in foreign countries to promote the use of EDI (electric deionization) technology, it is a revolution in ultra-pure water manufacturing technology, from a no need to regenerate chemicals, and can produce up to 18MΩ · CM ultra-pure water, In the semiconductor, integrated circuits and other industries. The State Economic Commission has also put the application of RO EDI complete sets of technology included in the national key promotion range, the use of enterprises to give preferential policies.

Design Principles:

☆ quality --- in accordance with the production requirements of ultra-pure water quality requirements and production characteristics, and consider the water quality of water (customers need to provide water quality analysis report or source water samples).

☆ scalability - system sub-design planning, taking into account the nearest water and production safety needs, in accordance with the needs of the production line at any time to expand production capacity, customers can be phased investment.

Reverse osmosis (membrane separation) method of ultra-pure water manufacturing technology:

Reverse osmosis is the use of sufficient pressure to make the solution of the solvent (usually refers to the water) through the reverse osmosis membrane (a semipermeable membrane) and separated from the direction of the opposite direction, can be greater than osmotic pressure reverse osmosis method for separation , Purified and concentrated solution. The main object of the reverse osmosis membrane is the range of ions in the solution.

Reverse osmosis separation process has the following advantages:

① no heating, no phase change;

② less energy consumption; continuous and stable process;

③ equipment, small size, simple operation, strong adaptability;

④ the environment does not produce pollution.

Ion exchange resin treatment Note:

Ion exchange resins often contain small amounts of low molecular weight polymers and monomers that are not involved in polymerization. So when the new ion exchange resin and water and acid, alkali and other solutions in contact, these low molecular weight polymer and monomer will be transferred into the solution, affecting the quality of water treatment. In addition, due to packaging, transportation and other reasons, ion exchange resin may also contain a small amount of inorganic impurities (such as iron, etc.), so the higher water quality in the desalination process, the new ion exchange resin before use, usually necessary deal with. At the same time, practice shows that: the new ion exchange resin for processing, but also can improve the resin "activation" and chemical stability.

Reverse osmosis water system according to different source water quality using different processes. After the general tap water treatment by a reverse osmosis system, the water conductivity <10-20μS / cm, after the secondary reverse osmosis system after the water conductivity <5μS / cm or even lower, in the reverse osmosis system followed by ion exchange Equipment or EDI devices can be prepared with ultra-pure water, making the resistivity up to 18 megohm. After the reverse osmosis membrane is aged or contaminated, the water quality will decrease.

Reverse osmosis pure water system is widely used in:

Electronic industry water integrated circuits, silicon wafers, display tubes and other electronic components flushing water

Pharmaceutical industry water pharmaceutical industry water infusion, injection, tablets, biochemical products, equipment cleaning, etc.

Chemical industry process water chemical water recycling, chemical products manufacturing

Power industry boiler supply water fire power boilers, factories and mines in the low-pressure boiler power system

Food industry water drinking pure water, beverages, beer, liquor, health care products

Sea water, brackish water desalination island, ships, offshore drilling platform, brackish water areas

Drinking pure water real estate property, community, enterprises and institutions

Ultrasonic cleaning water computer accessories, special materials, precision machinery and other requirements of high cleanliness of the ultrasonic cleaning line

Electroplating industry water cleaning workpiece water, bath water

Other process water car, home appliances coating, coated glass, cosmetics, fine chemicals

Ion exchange resin in the treatment, should note the following:

1, the use of new resin for the small exchange bed, the above treatment can be carried out in an external anticorrosive container. Such as large-scale exchange bed, due to the large number, it should be carried out in the exchange bed.

2, the volume of soaking solution should generally be 2 times the volume of new resin in order to fully soak the resin.

3, in the above treatment, for the preparation of soaking solution (such as NaCl solution, HCl solution, NaOH solution, etc.) of water and cleaning water should be clean, generally should be used in addition to salt water (or H water, softened water, etc.). Do not use raw water to avoid contamination of the resin. Especially the anion resin, if the use of raw water in the above treatment, will be in a long period of time with the hardness of the water.

4, if it is a small water equipment, the new resin can also be without the above treatment, direct regeneration of water. At this time, the resin is regenerated with twice the amount of the regenerant (acid, alkali or salt) and the resin is sufficiently washed with the brine (or demineralized water).

Guangzhou Jinfeng Light Industry Machinery Co. ,Ltd is a manufacturer that produces cosmetic ,pharmaceutical,chemical and dairy product equipment. We undertake equipment design,manufacture,installation,maintenance,technical improvement support,technical consultancy and other services. E-Mail: sales@jfqgjx.com / joyce@jfqgjx.com