Biofilm carrier, and water purification device, seaweed bed, water purification method, seaweed bed formation method, feed production method, and fertilizer production method using the biofilm carrier

摘要

PROBLEM TO BE SOLVED: To provide a carrier for a biological membrane, a water purifying apparatus and a seaweed bed low in production cost, high in the tensile elonga tion of obtained fibers, good in fiber processability, showing excellent micro organism fixing properties and capable of easily separating a fixed microorgan ism from fibers. SOLUTION: A carrier for a biological membrane composed of oxide fibers with a bonded oxygen content of 4-15 wt.% obtained by oxidizing acrylic fibers or carbonaceous fibers with a bonded oxygen content of above 2 wt.% obtained by carbonizing oxide fibers is inexpensive, high in tensile elongation and excellent in processability and well bonds a organism such as a microorganism in water to propagate and fix the same. Therefore, the carrier for the biological membrane can be used in a water purifying apparatus or a seaweed bed and the organism fixed to the carrier for the biological membrane is separated to be used as feed and fertilizer.