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As an important component of membrane technology, reverse osmosis, its components are porous asymmetric osmotic membrane, mainly used for the separation of substances in the solution of the molecular level, so that the material was graded, concentrated and purified. Reverse osmosis, also known as reverse osmosis, a pressure difference as a driving force, from the solution separation of solvent separation of the membrane operation, because it is the direction of natural infiltration and reverse, so that reverse osmosis. Depending on the osmotic pressure of the various materials, the reverse osmotic pressure greater than the osmotic pressure can be used to achieve the purpose of separation, extraction, purification and concentration, i.e., applying pressure to the liquid side of the membrane, and when the pressure exceeds its osmotic pressure , The solvent will reverse the direction of natural infiltration reverse osmosis. So that a permeated solvent, i.e., a permeated liquid, is obtained on the low pressure side of the membrane; and a concentrated solution, i.e., a concentrated liquid, is obtained on the high pressure side.

The separation of large and small molecules solute mainly depends on the porosity of the membrane, that is, the adsorption, exclusion, blocking and sieve of the membrane on the large and small molecular solutes. Sub-effect, separation of physical and chemical factors than the physical factors are more important, and membrane on both sides of the solution of the osmotic pressure difference, so the greater the pressure on both sides of the membrane, the higher the desalination rate. Reverse osmosis compared with other separation process, has the following advantages:


1), the process at room temperature and low pressure, low energy consumption, no heating, no thermal effect and phase change, without adding any other material to achieve separation, enrichment, purification and grading purposes. It is particularly suitable for:

     ● Separation and concentration of heat-sensitive substances.

     ● need to maintain the original product odor, taste, shape, color and nutrients of the physical and chemical properties of food and biochemical products separation and concentration.

     Concentrated recovery of very thin solute.

     ● desalination under constant volume constant concentration.

    2), reverse osmosis device is simple, small footprint, less ancillary equipment required, easy installation, low cost, easy to insert the existing production process system, expand the capacity and increase the components easy;

    3), reverse osmosis membrane loading density is high, the investment cost is small, the operation is simple, the starting time is short, easy maintenance repair, easy automatic control, low system energy consumption, short production cycle, easy operation and maintenance,

    4), according to user needs, to determine the best system recovery and system desalination rate, resulting in high concentration or high purity of the material;

    5), the core membrane components using world famous brands, quality assurance, the appearance of the use of sanitary stainless steel, fully enclosed pipeline operation, on-site safety and health, to meet the GMP (or FDA) specification requirements;

    6), the control system through the integration of data processing, online monitoring of important operating parameters, keep abreast of the system operating conditions, but also to achieve automatic control, effectively reduce the labor intensity of workers.


Due to the advanced, efficient and energy-saving features of reverse osmosis separation technology, it has been widely used in various industrial fields. Reverse osmosis water treatment has become the most advanced water treatment desalination technology and has been involved in food, beverage, oil , Chemical, electronics, pharmaceutical, biological, environmental protection and other fields. In the desalination of desalination, brackish water desalination, industrial wastewater treatment, resource recovery, material purification and enrichment process has achieved remarkable results. Its application areas include the following:

    1), food, fermentation broth, plant extracts, fruit juice beverage pre-concentration, flavor recovery, peptides, amino acids, oligosaccharides and other enrichment and purification;

    2), pharmaceutical biochemical (antibiotics, mycelia, amino acids, cell lysates, vaccines, hormones, organic acids, vitamins and other concentrated, traditional Chinese medicine, plant extracts concentrated, separation, purification;

    3), drinking water, food, pharmaceutical water, municipal water, chemical production water, power plant water, electronics, semiconductor industry, ultra-pure water, integrated circuit cleaning water preparation;

    4), seawater desalination, brackish water desalination, separation, purification and other treatment, low concentration of wastewater treatment, water reuse treatment.


The membrane reverse osmosis membrane is one of the most important forms of reverse osmosis, the membrane element is similar to a long envelope-like membrane pocket, and the opening side is bonded to the product water center tube containing the opening. The plurality of membrane pockets are wound on the same product center tube so that the feed water flows from the outside of the membrane, and the liquid material is allowed to flow into the liquid material center tube through the membrane into the membrane pocket after the liquid feed pressure, In order to facilitate the flow of the product liquid in the membrane bag, in the envelope of the membrane bag is covered with a layer of liquid material flow guide fabric layer; in order to make the liquid evenly through the membrane surface and to the liquid flow to disturb, In the film bag and the membrane between the liquid to the material channel is covered with a barrier layer. The volume of the membrane-type reverse osmosis element is different from the conventional filtration flow direction, and the liquid material is introduced from the end of the membrane element and flows in the direction parallel to the membrane surface. The separated product water is perpendicular to the membrane surface. Membrane into the product water film bag, therefore, to form a vertical, horizontal cross the flow of each other. The particulate matter in the liquid material remains in the liquid (gradually formed in concentrated water) and is taken away by the horizontal liquid stream. If the liquid flux of the membrane element is too large or the recovery is too high (refer to the excess Guidelines), the greater the likelihood that salt and colloids will remain on the membrane surface. Concentration is too high will form a concentration of polarization, colloidal particles will pollute the surface of the membrane, roll reverse osmosis membrane core tube as shown below:



Reverse osmosis use a wide range of production scale and quality requirements vary, so the device process is also different. The reverse osmosis system can be connected in series and in parallel by single or multiple reverse osmosis components and can be assembled into a variety of different applications. According to different purposes, reverse osmosis system can be divided into concentrated and separation type. According to the scale of production and product quality requirements, but also can be divided into continuous, intermittent two, and can be different levels and sections of the configuration. A complete reverse osmosis device, generally including the preparation of liquid, reverse osmosis membrane components, valves, piping and electrical control of three parts.

 


Model

Membrane material

Membrane model

Filtration pressure

Filtration temperature

Filtration flux

monitor rate

Dimensions

GLRO-4

modified

Polysulfone

4040

≤5Mpa

50(℃)

0.6t / h

4KW

1.5 / 1.2 / 1.5

GLRO-9


4040



1.5t / h

7.5KW

3.5 / 1.3 / 1.6

GLRO-6


4080



5t / h

11KW

2.5 / 1.3 / 1.6

GLRO-12


4080



10t / h

15KW

3.5 / 1.5 / 1.8

GLRO-18


4080



15t / h

18.5KW

3.5 / 1.7 / 1.8

GLRO-24


4080



20t / h

30KW

4.5 / 1.8 / 2.2

GLRO-30


4080



25t / h

37KW

5.5 / 2.2 / 2.5

GLRO-40


4080



30t / h

45KW

5.5 / 2.5 / 2.8


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Ge Yi (Shanghai) Environmental Technology Co., Ltd.

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