| 摘要 |
<p>PURPOSE:To make it possible to efficiently and effectively purify all kinds of foreign matter-contg. liquids contg. foreign matter and to shorten the stagnation time thereof by forming a carrier out of a foam having closed cells and having the apparent sp. gr. or true sp. gr. below the sp. gr. of the mother liquor. CONSTITUTION:A vessel 1 having its upper part opened is internally provided with a blocking plate 13. The carriers 2a which carry microorganisms, have closed cells and the apparent sp. gr. or true sp. gr. below the sp. gr. of the mother liquor in which the required foreign matter exists is packed in the lower part of the plate to form a suspended bed 2. The foreign matter-contg. liquid is filtered by an anaerobic granulated mud tank 10 when the foreign matter-contg. liquid is poured from a water spraying nozzle 4 via an introducing pipe 3 upward from the lower part in the vessel 1. Thereafter, this liquid passes a sludge granule zone 11 and is double filtered by the respective carrier zones 2 of a suspended bed 2 and the microorganisms carried therein. The microorganism-decomposition of the org. matter and nitrification are executed during this time. The foreign matter is gathered by a water collecting pipe 5 from the water surface and is discharged from a drain pipe 6.</p> |
