| 摘要 |
<p>PURPOSE:To obtain treated water with a reduced TOC component by preventing mixing of the TOC component during aeration. CONSTITUTION:An apparatus is equipped with a packed bed 12 formed by carrier particles with an organism membrane stuck, a biological reaction tank 10 which makes a fluidized bed of the packed bed by passing raw water upward, an oxygen dissolving tank 15 which receives treated water overflowing from the reaction tank 10 and circulates a part of the treated water from the bottom to the reaction tank 10 by a circulating pump 17. A connection pipe 18 having an air ejector 19 is installed between the pump 17 and the tank 15.</p> |
