I. Equipment: 
Microfiltration and ultrafiltration membranes is between between a nanofiltration membrane filter for material separation, concentration and purification of a membrane separation technology. In practice it is generally characterized by MWCO, as long as for the solution of the macromolecules, and colloidal particles and solvent and other small molecules to be separated. The macromolecules, colloids and particles are retained on the membrane surface, etc., away from the material circulation and became a concentrated solution to achieve physical separation, concentration and purification purposes. Ultrafiltration device applications mainly related to food, beverage, bio-pharmaceutical, fine chemicals, industrial wastewater treatment and reuse and so on. 
Membrane Technology: In China, the application of ultrafiltration technology in fruit juice clarification process has a dominant position. New squeeze out the juice contains pectin, pulp chips, starch, protein, suspended solids, microbial metabolism of other substances causing turbidity juice. 
Clarification of fruit juice by ultrafiltration, which allows the sugars, organic acids and water molecules through the membrane, but retain most of macromolecules, have been clarified sterile fruit juice; ultrafiltration process without filter aid; process process is short, low labor costs; is more cost-effective method to clarify the juice. 
Industrial production of enzymes generally for separation and purification, the traditional vacuum evaporation, solvent extraction and other methods there are many disadvantages. 
Now the use of ultrafiltration technology for the separation of enzyme concentration, can operate at room temperature, to overcome the heat of fermentation quality of finished products; remove one of the small molecule impurities to ensure the purity and quality of the filtrate of the good; filtration process without phase transition, energy consumption and lower cost than traditional methods; equipment operation is simple, easy to operate and control, which soon became a separate bio-pharmaceutical industry concentration process of choice.

Second, the application areas: 
* Dairy products, fruit juice, vegetable juice clarification, concentration 
* Animals and plants (aloe, Mangosteen, tea, etc.) to extract active ingredients 
* Soy protein, oligosaccharides, isoflavones such as extraction, concentration 
* Antibiotics, amino acids, VC and other fermented liquid purified, concentrated 
* Chinese (Bupleurum, Salvia, Scutellaria, etc.) injection active ingredient purified, separated 
* Medical water sterilization, in addition to the original heat, separation of drug concentration; 
* Polysaccharides (Ganoderma lucidum, Grifola frondosa, mushrooms, etc.) material purified, concentrated 
* FWA desalination, concentration ( 
* Electrophoresis paint recycling and water reuse 
* Textile desizing PVA waste water reuse, recycling fiber processing oil, lanolin wool scouring water waste. 
* Ultra-pure semiconductor industry, integrated circuits, terminal handling clean water; 
* Water Engineering: mineral water preparation, water purification, reverse osmosis and ultrafiltration as a pretreatment; 
* Wastewater treatment works; industrial wastewater treatment, municipal wastewater treatment and reuse; 
Third, the technical performance parameters: 
Ultrafiltration membrane with a PVC alloy membrane, has the following advantages: 
Membrane material is resistant to pollution, hydrophilic modified PVC. 
Flux lasting stability, anti-pollution ability. 
200ppm chlorine can withstand short-term environment for the pH range of 2-13. 
Complete sterilization, product water turbidity is less than 0.1NTU. 
Cross-flow design, exclude fouling, and increased life expectancy.

200ppm chlorine can withstand short-term environment for the pH range of 2-13. 
Complete sterilization, product water turbidity is less than 0.1NTU. 
Cross-flow design, exclude fouling, and increased life expectancy.