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Reverse osmosis membrane is the core component of reverse osmosis. It is a kind of artificial semi-permeable membrane with certain characteristics, which is made by simulating biological semi-permeable membrane. Generally, it is made of high molecular material. Such as cellulose acetate membrane, aromatic polyhydrazide membrane, aromatic polyamide membrane. The diameter of medical pure water equipment with surface micropore is generally between 0.5 and 10 nm, and the permeability is related to the chemical structure of the membrane itself. Some macromolecule materials have good repulsion to salt, but the water penetration rate is not good. Some macromolecule materials have more hydrophilic groups in chemical structure, so the water permeation rate is relatively fast. Therefore, a satisfactory reverse osmosis membrane should have appropriate permeability or desalination rate.

Nowadays, the use of pure water treatment equipment in water treatment equipment industry is closely related to the use of water equipment in domestic water and chemical industry. With the development of people's life, the operation and performance quality of its equipment have effectively improved the technological competition among water treatment industries.

Pure water treatment technology reverse osmosis membrane will be contaminated by inorganic fouling, colloid, microorganism, metal oxygen food water equipment chemicals and other substances in the normal use process. These substances adhere to and gradually deposit on the membrane surface. After accumulation to a certain extent, it will cause pure water equipment reverse osmosis device output decline or desalination rate. Dropping, increasing pressure difference, and even irreversible damage to the membrane, therefore, in order to restore good permeability and desalination performance, chemical cleaning of reverse osmosis membrane is needed.

In the daily operation of pure water equipment, regular inspection and timely replacement of precision filter elements should be injected to prevent particle contamination of reverse osmosis membranes caused by leakage of filter elements due to installation or quality problems. At the same time, we should often check whether there is gas in the precision filter, so that air can not be brought into the reverse osmosis membrane. For the back-up or long-term shutdown of the precision filter, we should take the method of adding formaldehyde protection to prevent bacteria from multiplying in large quantities. Pure water equipment filters are regularly backwashed. Friction of compressed air gas can occur during backwashing. Washing water can be put into use only after it is qualified, and air should not be brought into reverse osmosis membrane. The operation time of the mechanical filter should be prolonged as far as possible, which not only reduces the impact of the switching filter on the effluent quality, but also saves a lot of backwashing water.

Nowadays, reverse osmosis membrane component water treatment technology has basically solved our drinking water index. High performance reverse osmosis membrane component material can greatly reduce the cost of membrane water production and meet the drinking water requirements in some areas. At the same time, high performance water purification membrane material can improve the quality of tap water and achieve the quality of human drinking water. Standard.

Author: Hangzhou Water Shield Technology Co., Ltd.

Website: http://www.zjhzsd.com/

Key words: pharmaceutical pure water equipment, chemical industry water equipment, food water equipment