| 摘要 |
<p>PURPOSE:To obtain the biological treating device excellent in compactness, easy to operate and control and having high treating efficiency by providing a moving bed biological-membrane tank filter and furnishing a detour member which is freely mounted in and demounted from the tank filter and used for producing an upward and downward flow of raw water in an anaerobic tank to the anaerobic tank. CONSTITUTION:The raw water 1 flows upward and downward in the anaerobic tank 4, undergoes anaerobic treatment and is sent to the moving-bed biological membrane tank filter 10. The water is passed through a filter medium bed 11 and filtered by the biological membrane, hence the S-BOD which has not been converted to SS in the tank 4 is removed, and the SS is collected. The purified water is passed through a water collecting pipe 13 and discharged from an outflow pipe 14 as treated water 15. In this case, a part of the tank 4 is partitioned to form a space, a treated water part 16 and a treated water outflow part 17 are provided, and treated water is most effectively discharged. Since the water treating part is housed in the tank, the device is made compact.</p> |
