A device for producing lactic acid by promoting anaerobic fermentation of organic waste using low-temperature plasma
A low-temperature plasma and organic waste technology, which is applied in specific-purpose bioreactors/fermenters, biochemical cleaning devices, enzymology/microbiology devices, etc., to achieve the effect of promoting production
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Embodiment 1
[0033] like figure 1 As shown, the device for producing lactic acid by utilizing low-temperature plasma to promote anaerobic fermentation of organic wastes comprises a reactor, and the reactor is a plexiglass container. The ground electrode stainless steel plate 6 and the discharge electrode stainless steel plate 2 are oppositely arranged in the reactor, the discharge electrode stainless steel plate 2 is provided with 30 discharge needles 11, the ground electrode stainless steel plate 6 is arranged at the bottom of the reactor, and the ground electrode stainless steel plate 6 Connect the ground metric screw nut 14, the discharge electrode stainless steel plate 2 is arranged above the ground electrode stainless steel plate 6, the discharge electrode stainless steel plate 2 is connected to the metric full-thread screw 8, the metric full-thread screw 8 and the ground metric screw nut 14 are respectively Connect the plasma power supply via wires. The plasma power supply is connec...
Embodiment 2
[0041] Lactic acid was prepared by using the device of utilizing low-temperature plasma to promote the anaerobic fermentation of organic waste to prepare lactic acid described in Example 1, and the method is as follows:
[0042] (1) Take the concentrated sludge from the urban domestic sewage plant, the VSS is 16.9203g / L, and the moisture content is 99.2%; the organic waste food waste containing carbohydrates is taken, and the VSS ratio is 0.3921g / g.
[0043] The kitchen waste and sludge prepared are mixed in the reactor; the volatile dry weight ratio of kitchen waste and sludge is 6, and the VSS of 1L is 40g / L fermentation reaction mixture.
[0044] The above mixture was placed in an electric fermentation reactor for anaerobic fermentation, the fermentation temperature was 50° C., and the stirring speed was 120 rpm. The pH value was adjusted to 7 every 6 hours, and the fermentation was carried out for 6 days; the discharge frequency was 30 Hz every 12 hours; the voltage was 20...
Embodiment 3
[0049] Lactic acid was prepared by using the device of utilizing low-temperature plasma to promote the anaerobic fermentation of organic waste to prepare lactic acid described in Example 1, and the method is as follows:
[0050] (1) Take the concentrated sludge of urban domestic sewage plant, its VSS is 12.08g / L, and the moisture content is 99.2%; take the organic waste kitchen waste containing carbohydrates, and its VSS ratio is 0.3869g / g.
[0051] The prepared kitchen waste and sludge are mixed in the reactor; the volatile dry weight ratio of kitchen waste and sludge is 6, and the fermentation reaction mixture is configured as 1L, and the target VSS is 40g / L.
[0052] The above mixture was placed in an electric fermentation reactor for anaerobic fermentation, the fermentation temperature was 50° C., and the stirring speed was 120 rpm. The pH value was adjusted to 7 every 6h, and the fermentation was carried out for 6d; the discharge frequency was 30Hz every 3h; the voltage w...
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