| 摘要 |
<p>PURPOSE:To make continuous treatments, such as biological treatment and SS sepn., by immersing and holding filter medium layers in the respective blocks in the upper part in a tank, providing treated water outflow parts in the upper parts in the respective blocks, and providing raw water inflow parts and successively horizontally moving air diffusers in the lower part tanks of the respective blocks. CONSTITUTION:The upper parts in the tank 1 are segmented to plural blocks by perpendicular partition walls 2 and the filter medium layers 3 are immersed and held in the respective blocks. The respective treated water outflow parts 5 are provided in the upper parts in the respective blocks. The raw water inflow parts 8 are provided in the lower part tanks of the respective blocks and the air diffusion pipes 16 which move successively and horizontally in the lower parts of the filter medium layers 3 and the lower parts of the respective blocks. Namely, the complete cleaning treatment is executed only by the tank corresponding to the aeration tank of the conventional activated sludge treatment method and a space saving effect is maintained. There is no need for the settling basin and sand filter tank of the conventional activated sludge treatment method: in addition, the clean treated water having always <=20mg/l SS is obtd. Further, the maintenance and management are facilitated and the continuous cleaning treatment is possible.</p> |
