| 摘要 |
PURPOSE:To reduce the size of waste water treatment facilities by treating waste water with a dust removing device using grit, a preliminary aeration tank and a settling basin then filtering the same with a moving bed type filter device. CONSTITUTION:Waste water is supplied through a dust removing device 1 using grit to a preliminary aeration tank 2, where the materials that settle are made easier to settle and the materials that suspend are made easier to suspend. The aerated water is then fed into a settling basin 3. The overflow liquid from the basin 3 is fed to a moving bed type filter device 9. The waste water filtered with the device 9 is sterilized of bacillus coil, etc. with a sterilizer 6, whereafter the water is reutilized as clean water or is released into rivers. A moving bed type filter machine which uses combustible filter media such as pulverized coal or the like and in which the filter media are moved by a rotary feeder 10 or the like provided in the lower part of the filter tank is used for the device 9. |
