RO membrane is pure water equipment commonly used reverse osmosis membrane, can in most domestic use is Hyde and dow brand, reverse osmosis pure water is commonly used in water treatment equipment, the introduction to the RO reverse osmosis pure water equipment, RO pure water machine can also be referred to as reverse osmosis pure water machine.

Reverse osmosis pure water equipment, reverse osmosis membrane was mainly used for water desalination processing, so everyday use this pure water equipment, how to master the use of reverse osmosis pure water machine skills?

We source water treatment filter simple list several kinds of methods:
using the method of chemical cleaning RO pure water machine film
1.

Enzymatic detergent with enzymatic detergent processing film, the organic matter pollution, especially for protein, oil and other organic pollutants are particularly effective, if in 50 ℃ -

Cleaning effect better under 60 ℃, average after running for ten days or half a month with 1% of the enzyme detergent to a membrane cleaning under low pressure, due to the enzymatic detergent concentration is low, so requires dipping time is longer.


citric acid solution, under high pressure or low pressure, with 1%

2% of citric acid aqueous solution for continuous or circulation of membrane, the method of Fe (
哦)
3 pollution has good cleaning effect.

2。

Strong brine, the body pollution serious membrane used in concentrated brine cleaning is effective, this is due to the high concentration of salt water can decrease the interaction between colloidal, promote colloidal condensed to form micelles.

3。
Hydrogen peroxide solution, such as 0.

5 l, with 30% H2O2 with 12 l deionized water dilution, and then clean the membrane surface, this method is particularly effective to organic pollution.

4。

Water-soluble emulsion, used for cleaning contaminated with oil and iron oxide film is very effective, 30 - general cleaning
60 minutes.


using the principle of physics for cleaning
the simplest physical cleaning method is to use low pressure high velocity through the water flushing 30 minutes into the membrane, it can make the waterproof performance of membrane have a certain degree of recovery, but in the long run, permeable rate drop, still can be mixed with water and air fluid in low pressure washing membrane surface for 15 minutes, cleaning polluted by organic matter in the early years of the film in this way is effective.


the above is our my simple filter source water treatment equipment category, if you have any other question can be directly call the filter source water treatment equipment technical consultation.

Keywords: folding microporous membrane filter


keyword description: folding microporous membrane filter commonly used specifications

folding microporous membrane filter commonly used precision is: 0.
1 micron, 0.
22 micron, 0.
45 microns, 1.
5 microns (
Customers can be customized according to your demand)

Folding microporous membrane filter commonly used size: 10, 20 inches, 30, 40 inches, 1 m (
Customers can be customized according to your demand)

Microporous folded filter commonly used joint is: 222 joint (
Plug and socket)
, 226 joint (
Card type, bayonet)
Flat head (
Pressure type, the flat)

Filter source water filter co. , LTD. The main products: wire wound filter, microporous membrane folded filter, PP melt-blown filter, activated carbon filter, household pure water machine, stainless steel multistage centrifugal pump, reverse osmosis equipment, softened water equipment guangzhou filter source water filter equipment co. , LTD. Is China's first development and production of water filter various types of products are: PP wire wound filter, PP folded filter, PP melt-blown filter, activated carbon filter, resin filter, big flow filter, and provide the matching equipment professional factories, was also the first three development line around the filter, and participate in the formulation of the chemical wire wound type filter core (
Water filter)
One of the industry standard drafting unit.
Sincerely look forward to cooperation with you!

Keywords: water filter | PP wire wound filter filter | | PP folding PP melt-blown filter | large flow filter | activated carbon filter


keyword description:

polyvinylidene fluoride (
PVDF)

Microporous membrane as the filter medium, has high filtration precision, large flow, strong hydrophobicity, ability of high temperature sterilization disinfection, and superior chemical resistance.

In gas, liquid and the terminal filtration is widely used in the filter.

1, the main characteristics of broad chemical compatibility, special ability oxidation.
The strong hydrophobic properties.

Resistant to high temperature steam sterilization, and antioxidant sterilization.

When used for gas filtration, 100% can intercept bacteria and particles.

Dung, cast, clean and stable, which can be used in the pharmaceutical industry.

2, the typical use of compressed air aseptic filtration.
Sterile storage tank breathing apparatus.

Organic solvents, solvent impurities and aseptic filtration.

Clear filtration of liquid medicine, beverage, wine terminal and aseptic filtration.
Web site

Membrane separation technology is the use of membrane for the selection of various components in the mixture through the performance to the product of the separation, purification and concentration of new separation technology, membrane separation process is a kind of no phase change, lower energy consumption physical separation process, with high efficiency, energy saving, no pollution, easy operation, wide application characteristics and foreign called the 21st century the most promising one of the top ten new and high technology.




threonine is a kind of essential amino acids, mainly used in pharmaceutical, chemical reagents, food fortifier, feed additive, etc.

Threonine a mother liquor production process of centrifugal separation, high content of inorganic salt, salt by using ion exchange resin in addition to the original process, from the liquid by activated carbon decoloring, removing part of the protein, crude products.

Traditional process needs to consume large amounts of acid and alkali, resin regeneration cycle is short, easy to loss, waste acid alkali emissions pollution of the environment, decoloring link activated carbon is used up big, virtually raised the enterprise production operation cost, environmental protection pressure.




in fujian threonine production process, adopts special 'nanofiltration membrane electrodialysis +' as a centrifugal mother liquor of desalination and decoloring purification process.




threonine centrifugal mother liquor after first 0 at a time.

5% activated carbon and microfiltration process, with a yield of 98% or more hollow microfiltration membrane system;

After processing of centrifugal mother liquor adopts special electrodialysis removing most of the inorganic salt, initial conductivity, 100, 000 ~ 130, 000 mu s/cm to conductivity 14 ~ 16 000 000 mu s/cm, removal rate of 88%, threonine loss rate of 10% or less;

Electrodialysis desalination liquid decolorization by nanofiltration system purification, nanofiltration membrane system including pretreatment and decoloring purification system two parts.

Pre filtration system to remove electrodialysis desalination possible existence of solid particles in liquid, suspended solids and other mechanical impurities.

Decolorizing purification system with high separation efficiency, about 700 ~ 800 intercept molecular weight of nanofiltration membrane separation material, driven by the pressure water and threonine through nanofiltration membrane to enter through the liquid side, into the next production working procedure, and intercept protein, most of the pigment and macromolecular organic matter, realize the desalted liquid in the purification, threonine yield (
Including intercept and through the clear liquid)
≥98%。




use a variety of membrane technology to deal with a centrifugal mother liquor threonine, simplify the production technology, improve product quality, in order to realize the economic benefit and environment benefit unifies.




the hydroxy phenyl glycine is a kind of pharmaceutical intermediates, the production process can produce high salt content.

Processing technology of mother liquor was after ion exchange resin in addition to salt, again by active carbon decoloring, finally with the filtrate into normal refining process.

Mother liquid to use after a certain number of times, impurity, affect the product quality, then you need to mother liquor.

The disadvantages of previous process lies in the acid and alkali consumption of large, resin wastage is bigger, lead to the production cost is higher, at the same time because of the emissions of acid and alkali, make the heavier pollution to the environment.




by nearly a month of pilot, set up 60 m3 / d of hydroxy phenyl glycine centrifugal mother liquor special electrodialysis desalination system.

Running the results are shown in table 1


in addition, the membrane technology is applied to the process for production of glutamine, arginine, etc, such as the membrane electrodialysis desalination technology Ghana membrane filter decoloring after purification, arginine mother liquor of pervious to light can reach 80% ~ 92.
7%;

In glutamine slurry process, membrane electrodialysis desalination rate (
By conductivity meter)
Up to 90%.

In the mid-1970s, Calanese developed a new method for preparing microporous membranes, and launched a commercial product of celgrad polypropylene microporous membranes. This method is generally aimed at crystalline polymers. Word. First, a highly oriented crystalline polymer is prepared, and then at a temperature close to the melting point of the polymer, it is extruded into a film with rapid stretching. After the film is cooled, the film is stretched a second time to make the crystal structure of the film. It is damaged, resulting in (200-2500)*10-10m cracks, thereby forming a microfiltration membrane. The basic method of stretching is to extrude the membrane or fiber at a relatively low melting temperature and high stress, and then at a slightly lower Heat treatment at the melting point temperature, the chain segments can move to make the crystal larger and harder, and the polymer chains are folded on the crystallized surface without melting together to eventually form the desired film. This method is suitable for thermoplastic materials such as polypropylene, polyethylene, and polytetrafluoroethylene. The obtained microfiltration membrane has a high porosity, up to 90%, and the pores are elongated and the pore size ranges from 0.1 to 3um. , and the pore structure is a fine-slit network pore structure. Example Polypropylene microporous stretched film material PP solvent No film-making process Polypropylene resin-melt extrusion-hollow forming-cooling-winding-heat treatment-stretching-heat-setting-finished polypropylene hollow fiber membrane. Example Preparation of PET fiber film material by stretching method PET flux Trifluoroacetic acid, dichloromethane. Film making process The film making process includes the following aspects. a Spinning Dissolve the dried ultra-high molecular weight PET sample with a mixed solvent of trifluoroacetic acid/dichloromethane (volume ratio of 7:3) for about 3 days at room temperature, and pour the spinning dope into the prepared spinning solution. In the tube, water is used as coagulant, and dry and wet spinning is carried out at room temperature. The temperature is low, the orientation temperature of the drawn yarn is high, and the crystallization is low. This structure is beneficial to the subsequent secondary drawing, and then the secondary drawing is carried out at a temperature of 230 degrees. Crystallization, therefore, the temperature of the secondary drawing is required to be higher than the crystalline melting temperature of PET to melt the original crystal region, so as to realize the rearrangement of the fiber structure. C. Heat treatment With ethylene glycol as the heat medium, the treatment time is 3min. Appropriate heat treatment can improve the structure of the fiber and improve the thermal properties of the fiber. The heat treatment time has the greatest impact on its mechanical properties, and the performance decreases with time.