Carbon nanotube carrier type microbial electrochemical device for continuously treating sewage and generating power
A technology of microbial electrochemistry and electricity-generating microorganisms, applied in electrochemical generators, water pollutants, battery electrodes, etc., can solve the problems of increased operational complexity, large internal resistance, and small surface area of activated carbon, and achieve high sewage treatment efficiency , Large adhesion, simple operation
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Embodiment 1
[0036] like figure 1 As shown, the anode chamber 1, the cathode chamber 8 and the separation membrane 6 are first assembled together, and the separation membrane 6 is subjected to conventional pretreatment according to the characteristics of the separation membrane 6 before treatment. Then if figure 2 As shown, the device is externally connected to commonly used accessories, wherein: a resistor 13 is externally connected between the cathode 16 and the anode, and a data acquisition card 14 is connected at the same time, and the data acquisition card 14 is connected to a computer 15 . The water inlet 4 of the anode chamber is connected to the sewage bottle 20 through the silicone tube and the peristaltic pump 18, the water outlet 11 of the anode chamber is connected to one end of the three-phase separator 23 through the silicone tube, and the other end of the three-phase separator 23 is connected to the gas collector 24, The end is connected to the treated effluent collection ...
Embodiment 2
[0039] The microbial electrochemical device used is similar to that of Example 1, except that the anode chamber 1 is filled with carbon nanotube carriers, and carbon fiber felt is added as an auxiliary material, and the two together form a current collection system. Titanium wire 2 and carbon fiber felt Fixing is convenient for electron export. Among them, the filling density of carbon nanotubes is 0.13g / ml, and the volume ratio of carbon fiber mat to carbon nanotubes is controlled at 1:2-1:2.5. In this embodiment, the carbon nanotubes and the anode carbon fiber felt were heat-treated in advance, that is, they were soaked in acetone overnight, rinsed with high-purity water, and then heated in a muffle furnace at 450 degrees Celsius for 30 minutes. Then according to the same method as in Example 1, the sewage is treated to produce electricity, and it is found that when the organic load is about 2g COD L -1 d -1 When the maximum power generation voltage can reach 0.36V, the COD...
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