Flat Sheet Ceramic Membrane

Membrane Bioreactors （MBR） for wastewater treatment is a combination of a suspended growth biological treatment method, usually activated sludge, with membrane filtration equipment, typically low-pressure microfiltration (MF) or ultrafiltration (UF) membranes.It is now widely used for municipal and industrial wastewater treatment.
TFT has experience on ceramic membrane technology for over twenty years. We develope different kind of ceramic membranes like tubular CRM membrane, FCM flat sheet membrane and PCR honeycomb membranes. CRM tubular ceramic membranes have been applied for sidestream MBR application like landfill leachate treatment. In recent year, more and more FCM flat membranes  have been used to replace polymeric MBR system in heavy fouling waste water projects.
 

 

The MBR membranes are used to perform the critical solid-liquid separation function. In activated sludge facilities, this is traditionally accomplished using secondary and tertiary clarifiers along with tertiary filtration. The two general types of MBR systems are Vacuum (or gravity-driven) and Pressure-driven systems. Vacuum or gravity systems are immersed and normally employ hollow fiber or flat sheet membranes installed in either the bioreactors or a subsequent membrane tank,normally called Submerged MBR. Pressure driven systems are in-pipe cartridge systems located externally to the bioreactor, normally called Sidestream MBR .

》MBR Membrane Comparision
To have a comparison of the characteristics and capabilities of the two configurations, a few points are given below where they are compared: - iMBR (Immersed MBR or Submerged)  offers a lower cleaning frequency, and lower energy consumption, but, otherwise, sMBR (Side-stream MBR) can handle higher than iMBR MLSS (Mixed liquor suspended solids) concentration. For this reason, it is easier to carry out the maintenance operations and module replacements and cleanings since the system is more compacted.

TFT FCM flat sheet ceramic membrane is made of Al2O3, which are characterized by their excellent chemical  and thermal stability and their ability to withstand harsh chemical cleanings. It works in a similar way to  polymeric flat sheet membranes. The separation layer of FCM flat sheet ceramic membrane is coated on  the outer surface of support, therefore FCM flat sheet ceramic membrane run as Outside-In mode. In order to maintain the  filtration ability and keep flux stable, aeration is usually used to reducethe fouling on the outer surface.  FCM flat sheet ceramic membrane is more suitable for those cases under harsh conditions.

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