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Coupling system of membrane aerated biofilm and bioelectrochemistry and its application

A membrane aeration biofilm and bioelectrochemical technology, which is applied in the field of membrane aeration biofilm and bioelectrochemical coupling systems, can solve the problems of large energy consumption, weakened fixation force, and low oxygen utilization rate, and achieve low energy consumption. , no foam formation, good power generation efficiency

Active Publication Date: 2019-06-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned patent scheme combines MFC with MBR in order to realize denitrification and electricity generation, but the cathode aerobic reaction zone in this device adopts bubble aeration, which has the disadvantages of low oxygen utilization rate and large energy consumption, and due to oxygen and Substrate co-transfer leads to the formation of an inert anaerobic layer inside the biofilm of the membrane module, and its fixation force on the carrier is weakened

Method used

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  • Coupling system of membrane aerated biofilm and bioelectrochemistry and its application
  • Coupling system of membrane aerated biofilm and bioelectrochemistry and its application
  • Coupling system of membrane aerated biofilm and bioelectrochemistry and its application

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Embodiment 1

[0045] Such as figure 1 As shown, the membrane aerated biofilm and bioelectrochemical coupling system includes an anode chamber, a cathode chamber and a separation membrane 3 arranged between the anode chamber and the cathode chamber, and also includes a membrane aerated biofilm arranged in the cathode chamber 4. The external oxygen supply unit 5 connected to the membrane aeration biofilm 4 and the external pipeline 14 connecting the anode chamber and the cathode chamber, the anode chamber and the cathode chamber are respectively provided with a bioanode electrode 8 and a biocathode electrode 9, And the bioanode electrode 8 is electrically connected with the biocathode electrode 9 through the external circuit 7 . The external oxygen supply unit 5 includes a pressure gauge 51 , an airflow regulating valve 52 and an air compressor 53 sequentially connected to the membrane aerated biofilm 4 .

[0046] Wherein, the anode chamber includes an anode reaction chamber 1 and a bioanode...

Embodiment 2

[0055] In this embodiment, the anaerobic microorganism adopts Shewanella, the anoxic microorganism adopts Steinbacillus, the separation membrane 3 is a cation exchange membrane, the electrode material of the anode electrode and the cathode electrode is carbon cloth, and the membrane aeration biofilm 4 is hydrophobic microporous membrane. The COD of the waste water is about 1000 mg / L, the total nitrogen concentration is about 100 mg / L, the oxygen supply pressure is 0.1 MPa, and the rest are the same as in Example 1.

Embodiment 3

[0057] In this embodiment, Rhodospirillum is used for anaerobic microorganisms, Trichobacterium fluorescens is used for anoxic microorganisms, the separation membrane 3 is an anion exchange membrane, the electrode material of the anode electrode and the cathode electrode is carbon felt, and the membrane aeration biofilm 4 is surface modification film. The COD of wastewater is about 1000mg / L, the total nitrogen concentration is about 500mg / L, and the oxygen supply pressure is 0.1MPa. All the other are with embodiment 1.

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Abstract

The invention relates to a membrane-aerated bio-membrane and bioelectrochemical coupling system and application thereof. The system comprises an anode chamber, a cathode chamber and a partitive membrane arranged between the anode chamber and the cathode chamber, and further comprises a membrane-aerated bio-membrane arranged in the anode chamber, an outside oxygen supply unit connected with the membrane-aerated bio-membrane, and an externally-connected pipeline communicating the anode chamber with the cathode chamber, a biological positive electrode and a biological negative electrode are arranged in the anode chamber and the cathode chamber respectively, the biological positive electrode is electrically connected with the biological negative electrode through an externally-connected circuit, and the system is used for treating nitrogen-containing wastewater. Compared with the prior art, the system has the advantages that the system is simple and compact in structure, and bubbleless aeration is adopted, so that oxygenation utilization rate is high and the operation process is low in energy consumption; the whole system is stable in running, efficient and energy saving, has pollutant treatment and power generation functions and has a good development and application prospect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment technology and equipment, and relates to a membrane aeration biofilm and bioelectrochemical coupling system and its application. Background technique [0002] Traditional denitrification needs to be carried out in different reaction tanks, nitrification reaction is completed in the aerobic tank, and denitrification is completed in the anoxic tank. The area is large and the investment in infrastructure is high. In order to achieve the ideal treatment effect, it is sometimes necessary to add organic carbon sources and alkalinity. In the face of today's energy crisis and environmental pollution, the traditional denitrification technology has been difficult to meet the requirements of sustainable development, and it is necessary to seek a high-efficiency and energy-saving denitrification technology. [0003] Microbial fuel cells (MFCs) are devices that use microorganisms as catalysts to dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/34H01M8/16
CPCC02F3/005C02F3/302C02F3/34C02F2101/16C02F2101/30H01M8/16Y02E60/50Y02P70/50
Inventor 王荣昌姚佳斌周欣逸李乐雪王学昊
Owner TONGJI UNIV
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