Traditional tubular ceramic membrane is a static filtration process, relying on the mechanism of speeding up the flow rate of the liquid prepared to be treated, in order to prevent contamination of dirt blocking filtering membrane surface, the effective filtration time in this way is shortened, frequently washed, this way not only reduces the membrane service life but as well adds the operation cost. When handling sensitive or high viscosity product, this way is low-efficient and even not applicable.
The rotating ceramic membrane is also called dynamic cross flow filtering ceramic membrane, it is a new type of membrane filtering technology, through active motion of membrane module to alleviate membrane contamination. By its structure, it is within a central hollow rotatable axis and which causes membrane swirling installed on it. Membrane is rotating speedily along with the axis empowered by motor, utilizing whirling movement generated centrifugal force, water shear force and filtered liquid’s violent turbulence to high-efficiently clean the filtering membrane surface, eliminate concentration difference on membrane surface, and membrane permeability decays slowly as well as not influenced by the concentration of feed liquid very much, continuous stable operation time lasts long; meanwhile salt crystallization, fouling, gel layer, organic and so on contamination are decreased, largely prolonging the membrane wash cycle; system do not require high flux or high pressure, which largely save energy consumption and electric usage is one third of the tubular ceramic membrane.

Rotating ceramic membrane laboratory equipment effectively combines centrifuge and cross flow principle, both provides nano-scale filtering precision and secures a stable operating performance as well as brings with brilliant energy-saving effects. The system not only relies feed pump to promote high circulating flow and operating pressure, but also the system inside rotating helps feed liquid separation and filtration process. Different to traditional cross flow whirling mode, centrifugal force will divide fluid into differential concentration, different inner and outer circle linear velocity supply various shear force to deal with the feed liquid. Cross flow in circulation blooms out put more and filtering efficiency, with detainments heavier and energy cost lower.


 
Rotating Ceramic Membrane (Ceramic Membrane of Dynamic Cross Flow Filtration)

It is the core element of separation process, the contour is shaped like a round disc, the disc embraces two sides of separating layer with inner flow direct channel, the central surrounding equipped several liquid discharge holes, feed liquid pass through outside to inside when filtering. The disc material is often made of inorganic material, supporting layer of 2μm pore size. The filtration precision ranges from microfiltration and ultrafiltration, specific listed in category of 2µm, 0.5 µm, 0.2 µm, 60 nm, 30 nm, 7 nm, 5 nm. The membrane disc is characterized with strong chemical durability as well as heat-resistance, backwash available.



Rotating Ceramic Membrane Module (Ceramic Membrane of Dynamic Cross Flow Filtration):

To install the rotating membranes cross a hollow axle central-through, each other sealed by “O” seal ring, the whole body placed in a pressure container, the membrane module is done. According to the varies of anti-pollution property and heat-resistant property, the pressure container normally selected as stainless steel, fiber reinforced plastic and engineering plastic. Membrane module is divided into category by the size of membrane area, the structure of commonly seen membrane module is as follows:
 


 
 
 
 

Rotating Ceramic Membrane (Ceramic Membrane of Dynamic Cross Flow Filtration) Advantages:

Easy to wash: easy to wash and recovery

Flexible: flexible modes design, further installation proclined, easy to check and maintain

Concentration multiple high: Less residue and save cost for latter evaporation and dry

Convenient: small device occupation, automotive elevated module housing, install and displace membrane disc without difficulty

High-efficiency: innovative dynamic cross-flow technique enhances the flow treatment, time saving and productivity booming, high heat resistant

Filtering liquid of good quality: turbidity drops to 1NTU below, no plus additives, filtering quality secured, unopened pressure adjustment to avoid air oxidation

Energy saving: specialized system design play flow rate absent from large flow circulation pump supply, facile energy saving to 60%-80%, anti-pollution and easy cleaning

Improved process: low pre-treatment requirement, high concentration multiple, system replacing multiple process steps, strong function and save investment, long service term

Durability: resilient anti-pollution property, facile fixing harsh fluid, anti-acid/base, organic solvent resistant, utmost durable viscosity to 7000 mPas

 

 


Rotating Ceramic Membrane Laboratory Equipment (Ceramic Membrane Laboratory Equipment of Dynamic Cross Flow Filtration):

Rotating Ceramic Membrane Industry Equipment (Ceramic Membrane Industry Equipment of Dynamic Cross Flow Filtration):