가). 여과(filtration) 정의 - ujenc.co.kr

1 1. ( ). (filtration) (Separation technology) ( ) ( ) . 10 m , ( , PES, PTFE, Nylon 66, Gore Tex) m Ultra filtration . ( ) , ( ) , - . , , m , 50 % (slurry).

2 , . , .. m ( ) , ( ) .. (O ) (H O ) , , , , 4 1.

3 ( ). (filtering Mechanism) filtering mechanism 3 . [ Mechanisms of Filtration ] A : [ ] C : Cake [kg/ ] gc : [kgm/kgsec2] K1 : [-] K2 : [-] n : [-] P : [kg/ ] Pc : Cake [kg/ ] Pm : [kg/ ] Q : [ /sec] W : Cake [kg/ ] q : [ / sec] R : [1/m] Rc : Cake [1/m] Rm : [1/m] V : [ ] v : [ / ] do : Cake [-] dm : Cake [m/kg] : [kg/msec].

4 [sec] 1) (Direct Interception) . 2) (Inertial Impaction) Media Media . 3) (Diffusional Interception) (stream line) Micro Brownion Motion.

5 (Micro Brownion Motion : ). 4) (Unloading) .. 1 20% . 5) Liquid Fiteration . a) Electrostatic Deposition negative charge.

6 Positive charge negative charge b) Flocculation . Polyelectrolytes . Polyelectrolytes Soluble Starches, gelatin, derivatives of polyacrylates . c) Filter Aids Precoating , Precoating Cake . ( ). cake liquid.

7 1% cake , . 3 , precoat precoat , cake . 2 , . , , . (batch filter) 1kg/cm2 3~8kg/cm2.

8 ( ) belt filter . , cake . drum type precoat filter (continuous filter) . ~ . cake rotary precoat filter .. Rotary Vacumm Precoat Filter , 1/3 . , , x x x x.

9 50~100mm precoat , . precoating cake ~ 1 , precoat cake , , cake , precoat . , 1 1 . rotary vacumm precoat filter . [ Rotary Vacuum Precoat ] ( ). (Filters) . (San Filter & Depth Filter).

10 1 , . ( ) ( ) . (Activated Carbon Filter) , . 1 , , , . (Micro Filter) (Cartridge Type Filter) Filter , , .. 10 m ~ 2 kg/cm2 Cartridge Filter Bag Filter U/F.