| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method which decomposes organic substances in wastewater completely by microorganism treatment with an apparatus of simple structure and an apparatus for the method. SOLUTION: A fluidized phase area A formed above the inside of a reaction tank 1, a fixed phase area B formed below the inside, a slanted plate 2 for partitioning the inside of the tank 1 into two parts to enable bilateral flows between both areas, a pipe 3 for injecting wastewater installed in the bottom part of the area A, a pipe 4 for sending air to regulate agitation, circulation, and DO values, a pipe 8 for discharging wastewater installed in the upper part of the area A, vertical partition plates 5, 6 to form the ascending and descending areas of wastewater in the area A, porous wood chips 9 as a microorganism treating medium packed fluidizably in the area A, and porous wood chips 9 as a microorganism treating medium fixed in the area B are provided. Wastewater can be purified completely to such a degree that the treated water can be discharged directly by the combination of the aerobic treatment in the area A and the anaerobic treatment in the area B.</p> |
