Combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen

Patent metadata

Field	Value
Publication number	US-11795086-B2
Application number	US-202117530450-A
Country	US
Kind code	B2
Filing date	Nov 18, 2021
Priority date	Dec 4, 2020
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen, including a water feeding pump, a carbon capture device, an intermediate water tank, and an anaerobic ammonium oxidation reactor connected in sequence through pipelines, where the carbon capture device includes an anode chamber and a cathode chamber; an anode plate is arranged in the anode chamber; a cathode plate is arranged in the cathode chamber; a gas inlet pipe is further arranged at the cathode chamber; an air compressor is connected with the gas inlet pipe; a gas outlet pipe is arranged at a top of the carbon capture device; a water outlet in the intermediate water tank is fluidly communicated with a bottom end of the anaerobic ammonium oxidation reactor through a second water inlet pipe; the gas outlet pipe is fluidly communicated with the second water inlet pipe.

First claim

What is claimed is:

1. A combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen, comprising: a water feeding pump, a carbon capture device, an intermediate water tank, and an anaerobic ammonium oxidation reactor connected in sequence, wherein the carbon capture device is of a fully enclosed structure and comprises an anode chamber fluidly communicated with the water feeding pump through a water inlet pipe, and a cathode chamber fluidly communicated with the intermediate water tank through a first water outlet pipe; the anode chamber is separated from the cathode chamber through an ion exchange resin layer; an anode plate electrically connected to a positive electrode of a power supply is arranged in the anode chamber; a cathode plate electrically connected to a negative electrode of the power supply is arranged in the cathode chamber; a gas inlet pipe is further arranged at a bottom of the cathode chamber; an air compressor is connected with the gas inlet pipe; a gas outlet pipe is arranged at a top of the carbon capture device; a water outlet in a bottom of the intermediate water tank is fluidly communicated with a bottom end of the anaerobic ammonium oxidation reactor through a second water inlet pipe; the gas outlet pipe is fluidly communicated with the second water inlet pipe; the anaerobic ammonium oxidation reactor is an upflow anaerobic sludge bed; a three-phase separator is arranged at a top end of the anaerobic ammonium oxidation reactor.

2. The combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen according to claim 1 , wherein a lifting pump is arranged at one end, close to the intermediate water tank, of the second water inlet pipe; the lifting pump is configured for lifting water flowing out of the intermediate water tank.

3. The combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen according to claim 2 , wherein a gas pump is connected with the gas outlet pipe; a jet device is arranged at one end, close to the second water inlet pipe, of the gas outlet pipe.

4. The combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen according to claim 1 , wherein the three-phase separator comprises an overflow weir arranged at the top end of the anaerobic ammonium oxidation reactor; an exhaust port is formed in a top end of the three-phase separator; a side part of the three-phase separator is connected to a second water outlet pipe.

5. The combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen according to claim 1 , wherein an on-line ammonia-nitrogen monitoring device is arranged in the intermediate water tank.

6. The combined waste water and gas treatment system for efficiently decarbonizing and removing nitrogen according to claim 1 , wherein an on-line NO monitor is further arranged on the gas outlet pipe.

Assignees

• Univ Beijing Jiaotong

Inventors

• Yao Hong
• Lu Lu
• Tian Sheng

Classifications

• C02F9/00 Primary

  Multistage treatment of water, waste water or sewage · CPC title

• B01D53/326

  in electrochemical cells · CPC title

• B01D53/62

  Carbon oxides · CPC title

• B01D53/85

  with gas-solid contact · CPC title

• B01D2255/806

  Electrocatalytic · CPC title