Patent ID: 11945739
Assignee: GOHDA WATER TREATMENT TECHNOLOGY CO., INC.
Field: Measurement (Instruments)
Classification: CPC C  G  Y | IPC C  G

Claim 0:
1. A testing method for testing a state of an aeration tank in a wastewater treatment facility, comprising obtaining a difference between: a sedimentation amount when a given period of time has elapsed after an activated sludge mixed liquid collected from the aeration tank and water having a higher dissolved oxygen concentration than the activated sludge mixed liquid are poured into the same container and mixed together; and a sedimentation amount when a period of time equal to the given period of time has elapsed after the activated sludge mixed liquid collected from the aeration tank and water having a lower dissolved oxygen concentration than the activated sludge mixed liquid are poured into the same container and mixed together.