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Heterotopic electron compensation hydrogen autotrophic denitrification nitrogen removal device

An autotrophic denitrification and denitrification technology, which is applied in the direction of electrochemical bio-combination treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problems of low rate and low denitrification efficiency, and achieve increased solubility and enhanced denitrification Nitrogen efficiency, effect of improving hydrogen utilization

Active Publication Date: 2021-01-22
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low denitrification efficiency and low rate in nitrate-polluted water bodies lacking in electron donors, the present invention proposes a hydrogen autotrophic denitrification denitrification device compensated by ectopic electrons

Method used

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  • Heterotopic electron compensation hydrogen autotrophic denitrification nitrogen removal device
  • Heterotopic electron compensation hydrogen autotrophic denitrification nitrogen removal device
  • Heterotopic electron compensation hydrogen autotrophic denitrification nitrogen removal device

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specific Embodiment approach 1

[0020] Specific Embodiment 1: The hydrogen autotrophic denitrification denitrification device compensated by ectopic electrons in this embodiment is composed of a hydrogen production chamber 1, a denitrification chamber 2, an anode 3, a cathode 4, a gas diffusion membrane 5 and a DC power supply 6 to produce hydrogen The chamber 1 and the denitrification chamber 2 are separated by a gas diffusion membrane 5, the anode 3 and the cathode 4 are arranged in the hydrogen production chamber 1, the DC power supply 6 is arranged outside the hydrogen production chamber 1, and the anode 3 is connected to the positive pole of the DC power supply 6, The cathode 4 is connected to the negative pole of the DC power supply 6 .

[0021] The beneficial effects of this embodiment are:

[0022] 1. The device of this embodiment is equipped with a gas diffusion device, and the hydrogen gas is slowly released into the nitrate-contaminated water body to increase the solubility of hydrogen gas in wate...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that: the gas diffusion membrane 5 is a flat gas diffusion membrane or a hollow fiber membrane.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the material of the anode 3 is a biocompatible conductive electrode; the biocompatible conductive electrode is a carbon brush, carbon cloth , carbon fiber cloth, titanium mesh, stainless steel mesh, carbon felt, carbon fiber brush, granular activated carbon or biochar.

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Abstract

The invention discloses a heterotopic electron compensation hydrogen autotrophic denitrification nitrogen removal device, and relates to an autotrophic denitrification nitrogen removal device. The invention aims to solve the problems of low denitrification efficiency and low rate of nitrate polluted water body lack of electron donors. The device consists of a hydrogen production chamber, a denitrification chamber, an anode, a cathode, a gas diffusion film and a direct-current power supply, wherein the hydrogen production chamber and the denitrification chamber are separated through the gas diffusion film; or the device comprises a gas diffusion device, wherein the gas diffusion device is arranged at the gas outlet end of the hydrogen conveying pipeline. According to the device, hydrogen generated by the bioelectrochemical system is heterotopic used for hydrogen autotrophic denitrification, the inherent limitation on the electrode spacing during denitrification is broken through, the total nitrogen removal rate can be increased, the utilization rate of electrons recovered by the anode is increased, and secondary pollution to a water body is avoided. The device is suitable for sewagetreatment.

Description

technical field [0001] The invention relates to an autotrophic denitrification denitrification device. Background technique [0002] With the acceleration of urbanization, a large amount of pollutants have entered the ecosystem, and the pollution of nitrate in water has attracted widespread attention. Nitrogen contained in nitrate may cause eutrophication of water bodies, and nitrite, an incomplete metabolite of nitrate, has teratogenic and toxic effects, seriously threatening the health of the ecological environment. Therefore, how to remove nitrate in water efficiently and without pollution is very important. [0003] In nitrate-polluted water bodies that lack electron donors, such as polluted surface water and groundwater, the removal of nitrate often faces problems such as low removal efficiency and rate. A general double-chamber bioelectrochemical denitrification reactor (MFC) is composed of an anode chamber 1a, a cathode chamber 2a and a cation exchange membrane 3a. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/28C02F101/16C02F101/30C02F103/06
CPCC02F3/005C02F3/28C02F2101/163C02F2101/30C02F2103/06Y02E60/50
Inventor 冯玉杰梁丹丹何伟华李超
Owner HARBIN INST OF TECH
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