Patent ID: 11866355
Assignee: NANJING UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 1:
2. The system of claim 1, wherein the operational parameters of the ABN reactor are defined as follows: in the biosorption tank, a sludge concentration is 1500-2000 mg/L, a sludge age is 0.2-0.7 d, a hydraulic retention time is 0.5-0.75 h, a dissolved oxygen concentration is <0.8 mg/L, and a sludge return ratio is 30-70%; in the biologically-enhanced degradation tank, a sludge concentration is 2000-4000 mg/L, a sludge age is 15-25 d, a hydraulic retention time is 5-9 h, a dissolved oxygen concentration is 3-6 mg/L, and a sludge return ratio is 50-100%; and in the denitrification biofilter, a filtration velocity is 3-10 m/h, and in a backwash process, a gas-washing time is 2-5 minutes and a water-washing time is 5-15 minutes.