BIOLOGICAL TREATMENT METHOD AND BIOLOGICAL TREATMENT UNIT FOR DRAINAGE CONTAINING OILS AND FATS

摘要

PROBLEM TO BE SOLVED: To provide a biological treatment method and a biological treatment unit for drainage containing oils and fats which can treat the oils and fats in the drainage biologically and stably.SOLUTION: A biological treatment unit 1 for drainage containing oils and fats has a biological treatment drum 10 treating biologically the drainage containing oils and fats in the presence of a sponge carrier 18. A number of the cell of the sponge carrier 18 is 8-20/25 mm.SELECTED DRAWING: Figure 1