OIL AND FAT-CONTAINING WASTEWATER TREATMENT SYSTEM, AND OIL AND FAT-CONTAINING WASTEWATER TREATMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide an oil and fat-containing wastewater treatment system and an oil and fat-containing wastewater treatment method which can treat oil and fat-containing wastewater at reduced costs.SOLUTION: A wastewater treatment system 100 for treating oil and fat-containing wastewater has a front stage treatment tank 1 that subjects oil and fat-containing wastewater to anaerobic treatment in a limited oxygen supply state, and an acid production tank 2 and a methane fermentation tank 3 as an anaerobic treatment part that applies further anaerobic treatment to the oil and fat-containing wastewater having been treated in the front stage treatment tank.SELECTED DRAWING: Figure 1