Method for improving anaerobic acid production of kitchen waste
A technology of food waste and garbage, which is applied in the field of improving anaerobic acid production of food waste, can solve the problems of effluent alkalinity increase, accumulation, low pH value, etc., to promote anaerobic digestion acid production, reduce emissions, The effect of increasing yield
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Embodiment 1
[0038] This embodiment provides a method for improving the anaerobic acid production of kitchen waste, the steps are as follows:
[0039] 1) Drain the kitchen waste obtained from the hotel (moisture content is controlled below 80%) to remove impurities and crush to ≤20 mesh.
[0040] 2) Weigh 1700g of the pretreated kitchen waste obtained in step 1), mix it with 1150g of anaerobic activated sludge and fill it into a 5L CSTR anaerobic reactor;
[0041] 3) Using calcium oxide to treat high-concentration waste liquid produced by sulfuric acid fermentation to produce monosodium glutamate to obtain desulfurization waste liquid; the NH3-N concentration in the waste liquid was determined to be 10000 mg / L.
[0042] 4) Add 1 L of desulfurization waste liquid obtained in step 3) to the reactor in step 2), mix well, fill with inert gas to discharge air, and seal;
[0043] 5) Carry out anaerobic fermentation in the anaerobic environment obtained in step 4). At this time, the TS in the rea...
Embodiment 2
[0046] This embodiment provides a method for improving the anaerobic acid production of kitchen waste, the steps are as follows:
[0047] 1) Drain the kitchen waste obtained from the hotel (moisture content is controlled below 80%) to remove impurities and crush to ≤20 mesh.
[0048] 2) Weigh 1200g of the pretreated kitchen waste obtained in step 1), mix it with 2000g of anaerobic activated sludge and fill it into a 5L CSTR anaerobic reactor;
[0049] 3) Utilize calcium oxide to treat the high-concentration waste liquid produced by sulfuric acid fermentation to produce monosodium glutamate to obtain desulfurization waste liquid; after determination, the NH in the waste liquid 3 -N concentration is 10000mg / L.
[0050] 4) Add 0.5 L of desulfurization waste liquid obtained in step 3) to the reactor in step 2), mix well, fill with inert gas to discharge air, and seal;
[0051] 5) Carry out anaerobic fermentation in the anaerobic environment obtained in step 4). At this time, th...
Embodiment 3
[0054] This embodiment provides a method for improving the anaerobic acid production of kitchen waste, the steps are as follows:
[0055] 1) Drain the kitchen waste obtained from the hotel (moisture content is controlled below 80%) to remove impurities and crush to ≤20 mesh.
[0056] 2) Weigh 800g of the pretreated kitchen waste obtained in step 1), mix and fill in the CSTR anaerobic reactor of 5L with 1709g of anaerobic activated sludge;
[0057] 3) Using calcium oxide to treat the high-concentration waste liquid produced by sulfuric acid fermentation to produce monosodium glutamate to obtain desulfurization waste liquid; the NH in the waste liquid was determined 3 -N concentration is 10000mg / L.
[0058] 4) Add 1.5 L of desulfurization waste liquid obtained in step 3) to the reactor in step 2), mix well, fill with inert gas to discharge air, and seal;
[0059] 5) Carry out anaerobic fermentation in the anaerobic environment obtained in step 4). At this time, the TS in the ...
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