Ultrafiltration membrane and ultrafiltration membrane device

A, ultrafiltration membrane principle introduction

ultrafiltration is the use of porous intercept ability, remove the water in the form of physical filtration impurity particles of a given size. Driven by the pressure, the water in the solution, low molecular organic, inorganic ions, such as small size material by fiber microporous reached the other side of the membrane, the walls of the bacteria in the solution, colloid, particulate matter, organic macromolecular substances such as large size is not trapped, through fiber wall so as to achieve the purpose of screening of different components in the solution. The process for room temperature operation, no phase change, do not produce secondary pollution.

hollow fiber ultrafiltration membrane ultrafiltration technology is the most mature and advanced a kind of form. Hollow fiber diameter 0. 5 - 2. 0 mm, inner diameter 0. 3 - 1. 4 mm, be full of microporous hollow fiber tube walls aperture to intercept molecular weight of the material expression, intercept molecular weight can be up to several thousand to tens of thousands of. Raw water in the hollow fiber outer or inner cavity pressure flow, constitute the external pressure and internal pressure type, respectively. Ultrafiltration is a dynamic filtration process, trapped material can with concentrated small ruled out, not blocking the membrane surface, can run continuously for a long time.

2, ultrafiltration can intercept the substance of the

1, macromolecular organic matter: fat, fat, protein, starch, etc. ;

2, microorganism, bacteria, virus, parasite, escherichia coli, algae, etc;

3, colloid: colloidal silica, colloidal aluminum, colloidal iron;

4, suspended solids: metal sediment, suspended solid.

3, ultrafiltration equipment technical indicators:

1, using temperature: 5 ~ 45 ℃.

2, pH range: 2 ~ 13;

3, maximum film pressure difference: 0. 2MPa；

4, produced water turbidity, < 0. 1NTU；

5, the water turbidity: 15 to 50 ntu ( High polluting) ，＜15NTU( Conventional type)

6, microorganism, sterilization rate: 99. 99%;

7, suspended solids removal rate: 100%

4, the application of ultrafiltration technology areas:

1, high quality drinking water preparation;

2, the enrichment separation of proteins in food processing;

3, concentration of enzyme in the fermentation industry and filtering;

4, juice, beverage, clarification and sterilization;

5, protein in the food processing wastewater recycling.

6, industrial wastewater treatment, municipal water recycling system, electrophoresis paint, oil recovery.