[Introduction of membrane filtration principle]
Membrane filtration is a process by aperture size to separate, under the action of pressure difference on both sides of the membrane,membrane as the filter medium,and under a certain pressure,when the material liquid through the membrane surface, tiny pores on the surface of the membrane allow only water and small molecules to get through, as the permeate，and the material that volume is greater than the membrane pore size is trapped in the liquid side of the membrane,as the concentrated liquor,so achieve the purpose of separation and concentration.

[ Characteristics of concentration and separation UF membrane]
In the operation of normal temperature and low pressure, low energy consumption, so the equipment operation cost is low;
Equipment size is small, simple structure, low investment costs;
Simple process, easy operation and management;
Membrane filtration does not affect the molecular structure of the material liquid;
The wide application of concentration and separation UF membrane:
Suitable for biochemical and pharmaceutical product purification, separation, concentration, standardization, quality improvement etc.Such as:
★Enzymes and protein products              ★Amino acids, peptides, antibiotics
★Flavonoids, pigment, etc.                  ★Biological fermentation agents
★Removing pyrogen                       ★Biological algae products
★Heparin sodium, chondroitin sulfate, biological polysaccharide     ★Dairy product
★Oligosaccharides, monosaccharide          ★Citric acid, malic acid and other organic acids
★Fruit and vegetable juice                  ★Brewing products (wine, vinegar, etc）

Note： The flux of concentration and separation UF membrane depends on the nature , moisture content and molecular weight cut-off of the material liquid,so users must through the experiment to determine the flux design.

[The performance parameters of concentration and separation UF membrane]

Model			5050W-modified X50	9050W-modifiedX50		4040W-PS	6040W-PS
Performance	Concentration design flux(0.15Mpa)	180-400 L/h		440-880L/h		24-80 L/h	70-250m3/h
	Purification design flux(0.15Mpa)	180~400 L/h		440-880 L/h		24-80 L/h	70-250m3/h
Specifications	Type	External pressure type				External pressure type
	Membrane silks	X50/80 elastic antipollution modified PP				Hydrophlic PS
	MWCO	5-8(Ten thousand Dalton)				0.3/0.5/0.6/1/2/3(Ten thousand Dalton)
	Area	38m2			90m2	8m2		25 m2
	Silks quantity	23000,1.2m/60000,1.2m				7000,1m/21000,1米m
	Max Pressure	0.3Mpa				0.30Mpa
	Operation pressure	0.15-0.20Mpa				0.10-0.18Mpa
	Residual chlorine concentration	100ppm				100ppm
	Max temperature	45℃				45℃
	PH	0～14				1～14
	Operation mode	Cross-flow filtration				Cross-flow filtration
Process conditions	Backwashing pressure	0.15-0.25Mpa				0.10-0.15Mpa
	Backwashing flux	1.0-1.2T/h			2.0-4.0T/h	0.20-0.8T/h			0.6-1.5T/h
	Chemical cleaning drugs	HCL、NaOH、NaClO/NaOH				HCL、NaOH、NaClO/NaOH

The above table design value as the experience value, if the user design, according to the data must be used by the lower limit value.
The performance, application, cases of concentration and separation UF membrane please click into.
The molecular weight of 100~5000 spiral UF membrane please click into

[The process diagram of concentration and separation UF system]


"The UF membrane"please click into