Ceramic Membrane

Ceramic membranes are available for microfiltration, ultrafiltration and nanofiltration as single-channel or multiple-channel elements with channel diameters between 2 and 16mm.

Their main characteristics of Ceramic Membrane

  • Consistent pore size;
  • Very narrow mean pore-size distribution;
  • Long and reliable lifetime;
  • High permeate flux;
  • Greater void area per unit area of filtration surface;
  • High stability to organic media;
  • High-pressure resistance, high-temperature resistance;
  • Rigid with no creep or deformation;
  • Stable over a wide pH range;
  • Membranes bonded to substrate by strong ceramic bonds;
  • Corrosion & abrasion resistant;
  • Insensitive to bacterial action;
  • Can be repeatedly sterilized by steam or chemicals;
  • Ability to backwashed;
  • The possibility of regeneration after fouling;
  • Can process highly viscous fluids;

The principle of ceramic membrane

The principle of the filtration is based on two opposing effects: on the one hand, the particles are transported by the filtration flux to the membrane where they cause an increase in concentration; on the other hand, concentration differences are again reduced by the turbulence of the cross-flow and by Brownian motion of the particles. 

During filtration by means of ceramic membranes made by JIUWU the medium to be filtered flows through the channels of the membrane support. All particles whose size exceeds the pore radius of the membrane are retained. The particles /molecules build up in the concentrate. The filtrate permeates through the pores and depending on the procedure is subjected to subsequent process stages. This filtering method is also called “cross-flow filtration” or “dynamic filtration”. Cross-flow management can achieve stable fluxes. Still, the cleaning of cross-flow installations needs to be applied from time to time. Cleaning is performed by means of backward flushing or chemical cleaning.

The principle of cross-flow filtration in tubular ceramic membrane

ceramic membrane

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