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Annulus biological membrane electrode electrochemical device and application thereof
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A biofilm electrode, electrochemistry technology, applied in the field of bioelectrochemistry and environmental engineering, can solve the problems of low processing efficiency, large area, high energy consumption and operating cost
Active Publication Date: 2017-07-18
GUANGDONG UNIV OF TECH +1
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The technologies derived based on this principle mainly include: oxidation pond, oxidation ditch, UASB and SBR method, etc. These technologies have their own advantages in the treatment of livestock and poultry wastewater, but they also have the disadvantages of low treatment efficiency, large footprint, and energy consumption. and high operating costs
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Embodiment 1
[0068] The annular outer shell (volume 3.14L) of the device is made of plexiglass material with good light transmission and easy processing. The ring-shaped fixed frame of the ring-type membrane electrode is also made of plexiglass, and it is made into a clip type, with an ultrafiltration membrane (10K) sandwiched in the middle. The conductive activated carbon felt is used as the cathode and anode electrodes, which are fixed on both sides of the ring-shaped fixed frame.
[0069] (1) Start-up of the device: After sedimentation, filtration and appropriate dilution of the breeding wastewater from a pig farm, it is used as the inoculum and growth medium of the cathode and anode bacteria. Chlorella (20% inoculation) is used as the source of photosynthetic algae. The anode cover is sealed, and the cathode adopts continuous artificial light (intensity 5000lux). Start the device under continuous flow operation for 12 hours to acclimatize the anode electroactive biofilm and cathode al...
[0074] Under the conditions set in the above examples, the COD removal rate was 83.5%, and the NH 3 -N removal rate was 71.4%, NO 3 -N removal rate was 81.8%, oxytetracycline removal efficiency was 75.7%, Cu 2+ The removal efficiency was 80.5%.
example 3
[0076] On the basis of Example 2, reduce the influent load to COD: 500mg / L, NH 3 -N: 60mg / L, NO 3 -N: 55mg / L, Oxytetracycline: 5mg / L, Cu 2+ : 10mg / L, other conditions are the same.
[0077] Under the conditions set in the above examples, the COD removal rate was 92.7%, and the NH 3 -N removal rate is 85.4%, NO 3 -N removal rate was 92.8%, oxytetracycline removal efficiency was 93.7%, Cu 2+ The removal efficiency was 92.5%.
[0078] As can be seen from the above examples, the present invention provides a ring-shaped biomembrane electrode electrochemical device, comprising a cylindrical reaction chamber: a ring-shaped membrane electrode arranged inside the reaction chamber, and the ring-shaped membrane electrode It includes an anode, a diaphragm and a cathode in sequential contact; the ring-shaped membrane electrode divides the reaction chamber into an anode chamber and a cathode chamber; the anode is the wall of the anode chamber; the cathode is the wall of the cathode cha...
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Abstract
The invention provides an annulus biological membraneelectrode electrochemical device and application thereof. The device comprises: a cylindrical reaction chamber; an annulus membrane electrode arranged inside the reaction chamber, wherein the annulus membrane electrode comprises an anode, a diaphragm and a cathode in sequential contact, the annulus membrane electrode separates the reaction chamber into an anode chamber and a cathode chamber, a phycomycete biological membrane is attached to the surface of the cathode, and an electroactive bacteriabiological membrane is attached to the surface of the anode; an annular fixing frame for fixing the annulus membrane electrode; an anode column arranged inside the anode chamber; a cathode partition plate arranged inside the cathode chamber; an anode partition plate arranged inside the anode chamber, wherein an anode water inlet is formed in the lower part of the anode chamber, an anode water outlet is formed in the top of the anode chamber, a cathode water inlet communicated with the anode water outlet is formed in the top of the cathode chamber, and a cathode water outlet is formed in the lower part of the cathode chamber; and an adjustable resistor and a potentiostat, connected with the cathode and the anode. The device is high in degree of integration, low in energy consumption, and low in operating cost, and can strongly remove organic pollutants, nitrogen compounds and heavy metals in breeding wastewater.
Description
technical field [0001] The invention relates to the technical fields of bioelectrochemistry and environmental engineering, in particular to an electrochemical device of an annular biofilm electrode and its application. Background technique [0002] With the rapid development of the economy and the continuous improvement of living standards, the people's demand for meat, milk, eggs and other food is increasing day by day, which makes the livestock and poultry breeding industry develop rapidly in the direction of intensification and scale, resulting in a large number of livestockpoultry farmingwastewater. Livestock and poultry breeding wastewater is a typical organic wastewater with high nitrogen content. It also contains a certain amount of antibiotics and heavy metal ions. Discharging into the environment will cause serious environmental pollution and threaten ecological security and human health. [0003] At present, anaerobic / anaerobic microbial conversion (A / O process)...
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