Method for improving anaerobic digestion performance of biomass wastes by biological phase separation and optimization technology
A biomass waste and anaerobic digestion technology, which is applied in the field of solid waste treatment and resource utilization, can solve problems such as unresolved start-up technology and phase separation optimization technology, hindering the industrialization of two-phase anaerobic digestion technology, and achieve reduction Small reactor volume, good system stability, and the effect of improving conversion efficiency
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Embodiment 1
[0025] A method for improving the biogas yield of anaerobic digestion of biomass waste through biological phase separation optimization technology, comprising the following process steps:
[0026] 1. Raw material pretreatment: use a pulverizer and a juicer to crush the fruit and vegetable waste into a slurry, and realize solid-liquid separation. The screen aperture of the juicer is 1mm, the extrusion force is 300-600N, and the total juice volume is b ;
[0027] 2. Start-up and operation of the acidification phase: the acidification phase reactor adopts a complete mixing anaerobic fermentation reaction device (CSTR), the effective working volume is 5L, the reaction temperature is controlled at 35±1°C, and the stirring intensity is 120r·min -1 , stirring for 5min every 3h. The acidification phase starts with an organic load of 20gvs·L -1 , F / M=2, after 4 days of batch reaction, when the pH value of the system is stabilized in the range of 4.5 to 5.5, H 2 The content is around...
Embodiment 2
[0031] Embodiment 2: the specific implementation method is as follows:
[0032] A method for improving the biogas yield of anaerobic digestion of biomass waste through biological phase separation optimization technology, comprising the following process steps:
[0033] 1. Raw material pretreatment: crush fruit and vegetable waste into pulp with a shredder and a juicer, and realize solid-liquid separation. The screen aperture of the juicer is 1mm, and the extrusion force is 300-600N;
[0034] 2. Start-up and operation of the acidification phase: the acidification phase reactor adopts a complete mixing anaerobic fermentation reactor (CSTR), the effective working volume is 5L, the reaction temperature is controlled at 35±1°C, and the stirring intensity is 120r·min -1 , stirring for 5min every 3h. The acidification phase starts with an organic load of 20gvs·L -1 , F / M=2.5, after 3 days of batch reaction, when the pH value of the system is stabilized in the range of 4.5 to 5.5, H...
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