The purpose of this study is to prepare cheaper and higher performance reticulate porous ceramic (RPC) which is quitesuitable for using in organic carrier. The RPC was made by clay through the polymeric foam replication process. The X-raypowder diffraction (XRD) phase analysis indicated that the RPC was mainly comprised mullite when sintered at 1350 oC. Thesurface status of different component RPCs were also observed under scanning electron microscopy (SEM). The bio-filmproperties of RPC with different component and pore size were evaluated by the removal rates of CODCr and NH3-N. Theresults illustrated that the RPC had high effectiveness on the adsorption of micro-organism, the removal rates of CODCr andNH3-N were all reached to ~ 90%. The bio-film effect was associated to porosity, pore size and surface status of the RPC. Moreover, the porosity and pore size played more importantly role than the surface status in the process of bio-film for theRPC carriers. In fact, the RPC carriers with more porosity and suitable pore size achieve better sewage treatment effect.

Keywords: Reticulate porous ceramic, Polymeric foam replication process, Organism carrier, Sewage disposal, Materials characterization