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A low-energy microbial-electrochemical sewage treatment system

A sewage treatment system and sewage treatment method technology, applied in the field of water treatment, can solve the problems of high energy consumption, low treatment efficiency of refractory organic pollutants, high technical cost, etc., achieve low energy consumption, enhance wastewater treatment efficiency, and improve treatment efficiency Effect

Active Publication Date: 2021-04-23
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of high energy consumption of microorganisms and electrochemical sewage treatment systems in the prior art, low treatment efficiency of refractory organic pollutants, and high technical cost, and further provide a low energy consumption microbial-electrochemical sewage processing system

Method used

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  • A low-energy microbial-electrochemical sewage treatment system
  • A low-energy microbial-electrochemical sewage treatment system

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1The shown low-energy microbial-electrochemical sewage treatment system includes anoxic unit 1, aerobic unit 2, first packing 31, second packing 32, first screen 41, second screen 42, MEC Circuit, MFC circuit, separator 7, fixed value resistor 12, wire 13, mixed liquid return pump 14, aerator 15, solar panel 16, AC power supply 17, mixer 18; the first filler 31 is filled in the anoxic unit 1 Inside, the second packing 32 is filled in the aerobic unit 2, the first screen 41 is set at the first packing 31 close to the water surface, and the second screen 42 is set at the second packing 32 close to the water surface; the MEC circuit includes the MEC anode 5 and MEC cathode 6, MEC circuit embedded in anoxic unit 1, MFC circuit includes MFC circuit 1 and MFC circuit 2, MFC circuit 1 includes MFC1 cathode 8 and MFC1 anode 9, MFC2 includes cathode 10 and MFC2 anode 11, MFC circuit is embedded in aerobic Unit 2, the anoxic unit 1 and the aerobic unit 2 are separ...

Embodiment 2

[0042] Such as figure 2 The shown low-energy microbial-electrochemical sewage treatment system includes anoxic unit 1, aerobic unit 2, first packing 31, second packing 32, first screen 41, second screen 42, MEC Circuit, MFC circuit, separator 7, fixed value resistor 12, wire 13, mixed liquid return pump 14, aerator 15, solar panel 16, AC power supply 17, mixer 18; the first filler 31 is filled in the anoxic unit 1 Inside, the second packing 32 is filled in the aerobic unit 2, the first screen 41 is set at the first packing 31 close to the water surface, and the second screen 42 is set at the second packing 32 close to the water surface; the MEC circuit includes the MEC anode 5 and MEC cathode 6, MEC circuit embedded in anoxic unit 1, MFC circuit includes MFC circuit 1 and MFC circuit 2, MFC circuit 1 includes MFC1 cathode 8 and MFC1 anode 9, MFC2 includes cathode 10 and MFC2 anode 11, MFC circuit is embedded in aerobic Unit 2, the anoxic unit 1 and the aerobic unit 2 are sep...

Embodiment 3

[0057] Such as figure 2 The shown low-energy microbial-electrochemical sewage treatment system includes anoxic unit 1, aerobic unit 2, first packing 31, second packing 32, first screen 41, second screen 42, MEC Circuit, MFC circuit, separator 7, fixed value resistor 12, wire 13, mixed liquid return pump 14, aerator 15, solar panel 16, AC power supply 17, mixer 18; the first filler 31 is filled in the anoxic unit 1 Inside, the second packing 32 is filled in the aerobic unit 2, the first screen 41 is set at the first packing 31 close to the water surface, and the second screen 42 is set at the second packing 32 close to the water surface; the MEC circuit includes the MEC anode 5 and MEC cathode 6, MEC circuit embedded in anoxic unit 1, MFC circuit includes MFC circuit 1 and MFC circuit 2, MFC circuit 1 includes MFC1 cathode 8 and MFC1 anode 9, MFC2 includes cathode 10 and MFC2 anode 11, MFC circuit is embedded in aerobic Unit 2, the anoxic unit 1 and the aerobic unit 2 are sep...

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Abstract

The invention discloses a microbial-electrochemical sewage treatment system with low energy consumption, which mainly includes an anoxic unit and an aerobic unit, and also includes fillers, screens, MEC circuits, MFC circuits, fixed-value resistors, separators, and mixed liquid reflux Pumps, aerators, solar panels, AC power, mixers. Its operation method is as follows: 1. The secondary biochemical sewage enters from the bottom of the anoxic unit, and after mixing with the supernatant containing nitrate nitrogen from the aerobic unit, under the joint action of anaerobic, facultative microorganisms and MFC circuits, Carry out denitrification and denitrification, and degrade some organic pollutants; 2. The wastewater overflow of the anoxic unit enters the aerobic unit through the partition, and under the joint action of aerobic microorganisms and MFC circuits, nitrification and BOD are removed, and the supernatant The liquid returns to the anoxic unit through the mixed liquid return pump; 3. Two MFC circuits are used as the power supply of the MEC circuit to drive the MEC electrodes to work, strengthen the wastewater treatment capacity of the anoxic unit, and achieve the purpose of low energy consumption for wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a microbe-electrochemical sewage treatment system with low energy consumption. Background technique [0002] After secondary biochemical treatment of wastewater, the easily biodegradable organic pollutants have been exhausted, resulting in a serious imbalance of C / N in the effluent. Although the biodegradability of wastewater can be improved by adding easily degradable carbon sources, it will definitely increase the cost of wastewater treatment , and the dosage is not easy to control, and it is easy to cause secondary pollution. Traditional sewage biological treatment technology usually needs to supplement carbon source, the operation is more complicated, the biological start is slow, and it is easily affected by temperature. The bioelectrochemical system (BES) uses microorganisms as catalysts to perform catalytic oxidation at the anode or catalytic reduction at the catho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/00C02F3/34
CPCC02F3/005C02F3/302C02F3/34
Inventor 黄辉高依林任洪强张徐祥
Owner NANJING UNIV
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