Non-blocking filtration system
A non-blocking filtration system wherein the suspension filtered continuously scrubs the filter, keeping it free of deposits of solid deposits while the filtrate is removed in a variety of biological and chemical applications, substantially reducing the cost of unit operations.
1. A filtration system to remove a filtrate from a suspension comprising:
a. a circular porous disc with two sides and an inner volume, a plurality of pores ranging from 1 micron to 100 microns and a filtrate port on each side of the disc;
b. a source of vacuum connected to each filtrate port;
c. a turbine propeller assembly equal in diameter to the diameter of the disc and positioned at a distance between 0.1 cm to 1 cm away from the each side of the disc, a means of rotating the turbine propeller and a means of controlling the speed of rotation of the turbine propellers;
d. a housing to hold the disc and the turbine propellers in place.
2. The filtration system according to claim 1 , wherein the disc is covered by a filter membrane with a plurality of pores ranging from 0.1 μm to 5 μm.
3. The filtration system according to claim 1 , wherein the disc is made of polymer, ceramic or metal.
4. The filtration system according to claim 3 , wherein the ceramic material is aluminum oxide.
5. The filtration system according to claim 2 , wherein the filter membrane is made of cellulose, polyethylene or nylon.
6. The filtration system according to claim 1 , wherein the turbine propellers are capable of drawing a suspension and blowing it at a high velocity in the surface of the disc.
7. The filtration system according to claim 1 , wherein the turbine propeller assembly is made of a polymer or metal.
8. The filtration as system according to claim 1 , wherein the means of rotating the turbine propeller comprise a rotating cable connected to the propeller through gears, a gas driven motor or an electric motor.
9. The filtration system according to claim 1 , wherein the turbine propeller is capable of rotating continuously from 100 rpm to 1000 rpm.
10. The filtration system according to claim 1 , wherein the speed of the turbine propeller is automatically adjusted directly in proportion to the intensity of vacuum required for withdrawing the filtrate.
11. The filtration system according to claim 1 , wherein the vacuum source is a peristaltic pump.
12. The filtration system according to claim 1 , wherein the suspension comprises a nutrient media and a biological culture.
13. The filtration system according to claim 1 , wherein the filtration system is disposed completely inside a disposable bioreactor.
14. The filtration system according to claim 1 , wherein the filtration system is disposable.
15. The filtration system according to claim 1 , wherein it is used as a perfusion filter in the manufacturing of recombinant drugs using cell culture.
16. The filtration system according to claim 1 , wherein it is used as a perfusion filter in the clearing of biological fluids of contaminants in clinical use.
17. The filtration system according to claim 1 , wherein it is used to sterilize contaminated liquids in various process industries.
18. The filtration system according to claim 1 , wherein the filtrate removed is the desired product.