| 摘要 |
<p>PURPOSE: To easily treat a spent liquor in a waste water by separating a large- size trash with a screen from a grease which is discharged together with the water and composed of animal/vegitable oil and mineral oil and decomposing the grease with a grease decomposing device while sending air. CONSTITUTION: The grease which is discharged from a hotel, a hospital, etc., together with the water and composed of the animal/vegitable oil and the grease which is discharged from a petroleum station, a factory, etc., together with the water and composed of the mineral oil is flowed into the first chamber 6 being a grease trap, and the large-size trash 10 is separated with a large opening screen 9 and the grease is allowed to float under the trash. A grease decomposing device 14 consisting of a perforated plate is allowed to float in the grease separated into the second chamber 7 and the third chamber 8. A light weight aggregate impregnated with oil decomposing bacteria is dispersed freely changeably at the inside of the grease decomposing device 14, and the grease 11 is decomposed into gaseous CO2 and water with the light weight aggregate. While air is sent from a compressor through an aeration pipe 17 large in air permeability to accelerate decomposition.</p> |
