MICROORGANISM IMMOBILIZED CARRIER AND METHOD FOR MANUFACTURING THE SAME, AND WASTE WATER TREATING METHOD USING THE CARRIER

摘要

PROBLEM TO BE SOLVED: To provide a carrier which is a microorganism immobilized carrier used by being stuck with microorganisms on its surface and is large in a specific surface and can maintain the good quality of treated water for a long period. SOLUTION: The outer peripheral part of the microorganism immobilized carrier as a tubular body consisting of a thermoplastic resin is provided with a plurality of projections and the width in the front end areas of these projections is set at =0.8 times the spacings between the front end areas of the projections adjacent to each other, by which the specific surface area is increased and the treating performance of the immobilized carrier is enhanced; in addition, the peeling of the microorganisms from the carrier surface does not occur in spite of contact with other carriers and the treating performance good for a long period can be maintained.