Method for quick start of sludge superhigh temperature anaerobic digestion system
An anaerobic digestion system, high temperature anaerobic technology, applied in biological sludge treatment, sludge treatment through temperature control, waste fuel, etc. problems, to achieve the effect of high degradation rate and gas production efficiency, shortening the start-up period, and ensuring system stability
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Embodiment 1
[0029] The effective volume of the anaerobic reactor is 6 L, the outer interlayer is filled with tap water, the heating method is electric heating, the temperature control method is material temperature control, and the stirring shaft is a horizontal double spiral stirring shaft.
[0030] (1) The first enrichment of thermophilic methanogens: dilute the dehydrated sludge with deionized water to a solid content (TS) of 8%, take 500 g of high temperature anaerobic digestion sludge and add it to the reactor, press VS : VS (high temperature anaerobic digestion sludge: dehydrated sludge) = 1: 1 dosing of dehydrated sludge, the weight of the dehydrated sludge is 422 g, filled with nitrogen to remove the air above the reactor, keep the reactor airtight, and the material temperature is stable Run for 25 days at 65°C. The stirring method is intermittent stirring, the speed is 10 r / min, the stirring is set for 5 minutes, and the stirring is stopped for 5 minutes.
[0031] (2) Second enrichme...
Embodiment 2
[0036] The effective volume of the anaerobic reactor is 9 L, the outer interlayer is filled with tap water, the heating method is electric heating, the temperature control method is material temperature control, and the stirring shaft is a horizontal double spiral stirring shaft.
[0037] (1) The first enrichment of thermophilic methanogens: Dilute the dehydrated sludge with deionized water to a solid content (TS) of 8%, take 750g of high temperature anaerobic digestion sludge and add it to the reactor, press VS: VS (high temperature anaerobic digestion sludge: dehydrated sludge) = 1: 1 dosing of dehydrated sludge, the weight of the dehydrated sludge is 633 g, filled with nitrogen to remove the upper air of the reactor, keep the reactor airtight, the material temperature is stable 65 ℃, 25 days of operation. The stirring method is intermittent stirring, the speed is 15 r / min, the stirring is set for 5 minutes, and the stirring is stopped for 5 minutes.
[0038] (2) Second enrichme...
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