Carrier for microorganism incubation in which micro-elements and inorganic nutrient salts are diffussed

Abstract

An object of this invention is to offer an incubation carrier for achieving high activity and high density of the microorganism in a bioreactor, in a treatment of waste water, etc. For achieving that, a carrier for microorganism incubation of a diffusion type in which microelements and inorganic nutrient salts which are useful in proliferation of microorganism are included in a porous material is provided.

What is claimed is:  
     
         1 . A carrier for microorganism incubation which is in such a type that microelements and inorganic nutrient salts are diffused therein, characterized in that, the microelements and the inorganic nutrients salts which are useful for proliferation of the microorganism are included in a porous material.  
     
     
         2 . A carrier for microorganism incubation wherein organic carbon sources such as glucose and biodegradable resin are included in the carrier of    claim 1   .  
     
     
         3 . A carrier for microorganism incubation wherein the microorganism is included in the carrier of    claim 1    or    2   .  
     
     
         4 . A carrier for microorganism incubation according to any of    claims 1    to    3    wherein the surface thereof is coated with a high-molecular polymer.  
     
     
         5 . A carrier for microorganism incubation according to any of    claims 1    to    4    wherein the microorganism is subjected to an enrichment proliferation on the surface thereof followed by coating with the high-molecular polymer again.  
     
     
         6 . A carrier for microorganism incubation according to any of claims  1 - 5  wherein the carrier is coated with a biodegradable resin.  
     
     
         7 . A carrier for microorganism incubation according to    claim 4    or    5    wherein the high-molecular polymer coat contains magnetic powder.  
     
     
         8 . A carrier for microorganism incubation according to any of    claims 1    to    7    wherein the porous material is a high-molecular polymer or gel of a high-molecular polymer.  
     
     
         9 . A carrier for microorganism incubation according to any of    claims 1    to    7    wherein the porous material is ceramics or natural stone material.  
     
     
         10 . A carrier for microorganism incubation according to    claim 8    wherein the high-molecular polymer is included in the gel of the high-molecular polymer.  
     
     
         11 . A carrier for microorganism incubation comprising of a rock wool as porous material.  
     
     
         12 . A carrier for microorganism incubation according to calim  11  wherein the carrier is used for a fixed-bed type methan fermentation.