| 摘要 |
<p>PURPOSE:To improve treatment efficiency by putting a part or the whole of an air sending pipe of air to be supplied to an aeration tank in a magnetic field in biological treatment. CONSTITUTION:The quantity of air for aeration in an aeration tank 8 is controlled an air pump 5. A gas bubbling pipe 7 is one composed of a glass tube and a semi-hard resin tube in which about 16 fine pores are formed and which is connected with tip part of the glass tube and the tube core is put at the position upper than the tank bottom. Electricity whose voltage is adjusted by a voltage-transformer 9 and whose current is rectified into direct current by a rectifier 10 is applied to a coil 11 in a magnetic field to provide a magnetic field to the air in an air sending pipe 6. Regarding the organic substance oxidation and removal and ammonia oxidation, these reaction velocities are remarkably improved by putting a part or the whole of the air sending pipe to supply air to the aeration tank in a magnetic field, as compared with those by a common activated sludge method.</p> |
