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食品廢棄物風干處理后厭氧消化特性研
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Digestion Characteristics for Air-dried Food Waste
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    摘要:

    為了抑制食品廢棄物厭氧發(fā)酵過程中產(chǎn)酸速度,,采用食品廢棄物風干預處理方法,,研究高溫條件下不同接種率和含水率對風干食品廢棄物厭氧消化過程的影響,。研究結果表明:風干處理能有效緩解酸化初期的酸中毒現(xiàn)象,;含水率和接種率的交互作用明顯影響風干食品廢棄物產(chǎn)氣率和污染物去除率;在高接種率時,,低含水率的系統(tǒng)更有利于風干食品廢棄物 的處理,,處理后的系統(tǒng)有較高的緩沖能力;在55%接種率,、92%含水率條件下能實現(xiàn)風干食品廢棄物厭氧發(fā)酵的順利進行,,且單位可揮發(fā)性固體風干食品廢棄物的產(chǎn)CH4率達到了0.246L/g,而最大的產(chǎn)CH4率在接種率為75%,、含水率為88%條件下獲得,為0.471L/g,,且在產(chǎn)氣穩(wěn)定時期,,氣體中CH4體積分數(shù)維持在75%左右;COD的去除率以及TS的去除率都隨接種率的提高而上升,,最高的

    Abstract:

    COD去除率為91.6%,,最高的TS去除率為32.7%。 Under high temperature condition, the effects of inoculation rates and moisture contents on anaerobic digestion of air-dried food waste were studied. The results showed that air-dried food waste could effectively alleviate the acidosis at the initial acidification phase. The interaction of inoculation rates and moisture contents makes an impact on the methane production. High inoculation rate and low moisture content is advantage to anaerobic digestion of air-dried food waste which gives the system a higher buffer capacity. When the inoculation rate is 55% and the moisture content is 92%, the process of anaerobic digestion operates normally with the methane production rate of 0.246L/g. The highest methane production rate reaches to 0.471L/g at 75% inoculation rate and 88% moisture content. The removal rates of COD and TS increase with inoculation rate, and the highest is 91.6% and 32.7%, respectively.

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王延昌,袁巧霞,謝景歡,郭聰穎.食品廢棄物風干處理后厭氧消化特性研[J].農(nóng)業(yè)機械學報,2010,41(4):105-109. Digestion Characteristics for Air-dried Food Waste[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(4):105-109.

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