Patent ID: 11884569
Assignee: BEIJING JIAOTONG UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A system for biological nitrogen removal and negative carbon discharge from wastewater with low carbon-to-nitrogen ratio, the system comprising:
a water intake pump, a carbon capture apparatus, a carbon recovery sedimentation tank, an integrated anaerobic ammonium oxidation apparatus, an autotrophic denitrification apparatus and a denitrification sedimentation tank that are connected in sequence via pipes;
wherein the carbon capture apparatus comprises an anode chamber communicated with the water intake pump via a water inlet pipe of the pipes and a cathode chamber communicated with the carbon recovery sedimentation tank via a first water outlet pipe of the pipes; the anode chamber and the cathode chamber are spaced apart by an ion exchange resin membrane; the anode chamber is provided with an anode plate electrically connected to a positive electrode of a power source, and the cathode chamber is provided with a cathode plate electrically connected to a negative electrode of the power source; a bottom of the cathode chamber is provided with aerators connected to a first air compressor by means of a first pipe of the pipes; the integrated anaerobic ammonium oxidation apparatus is a continuous flow baffled reactor; and the autotrophic denitrification apparatus is a completely mixed flow reactor.