| 摘要 |
<p>PURPOSE:To efficiently clean and deodorize a sewage, by a method wherein a primarily treated liquid dripped from a trickling filter is subjected to an aerobic secondary cleaning treatment in an aerating tank provided at a bottom part of a tower, and odors generated in each treatment are removed by a soil bed provided at a top part of the tower. CONSTITUTION:The sewage sprinkled from a sprinkling pipe 11 flows down through a contact packed bed 3 while being primarily treated by being subjected alternately to an aerobic and an anaerobic biochemical treatment, is dropped through a net form hopper 4, then flows into a contact aerating tank 16 provided at the bottom of the tower, and is subjected to the secondary treatment by an aerobic biochemical treatment, whereby it is cleaned. The liquid thus treated to be clean is discharged to the exterior of the system through a treated water outlet port 18 or a discharging port 19 to be reused. On the other hand, the odors generated from the sewage springled from the pipe 11, the primarily treated liquid and the secondarily treated liquid are carried upward by air blown off from a diffuser pipe 17, and are removed by a soil deodorizing bed 13.</p> |
