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牛糞厭氧發(fā)酵污泥回流試驗
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黑龍江省自然科學基金資助項目（ZD200817）;東北農(nóng)業(yè)大學博士啟動基金資助項目（2009RC49）


Sludge Recycle Trial of Cattle Manure Anaerobic Fermentation
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    摘要:

    為提高兩階段厭氧發(fā)酵系統(tǒng)的效率,，對混合使用在線活性污泥與后儲罐最佳活性時段污泥的污泥回流工藝進行了研究。綜合回流試驗以進料質量分數(shù),、日進料量和污泥回流比為影響因素,，以COD去除率、產(chǎn)氣量為評價指標,，采用二次回歸旋轉試驗設計,，研究COD去除率和產(chǎn)氣量在各參數(shù)影響下的變化規(guī)律。結果表明：進料質量分數(shù),、日進料量和污泥回流比是影響兩個評價指標的主要因素,，其中混合污泥回流量的影響顯著；試驗得出該厭氧發(fā)酵系統(tǒng)的最優(yōu)工藝參數(shù)為進料質量分數(shù)8.21%,、日進料量7.15L/d,、污泥回流比30%。

    Abstract:

    In order to improve the efficiency of two-stage anaerobic fermentation system, the circulation process of sludge, composed of the activated sludge online and the activated sludge of the optimal period from storage tanks, was studied. Three factors, including feed concentration, day feeding quantities and sludge recycle ratio, were selected as independent variables, while COD removal rate and biogas production amount were as evaluating indicators. With the quadratic orthogonal rotating combinatorial method, the effects of different parameters on COD removal rate and biogas production amount were analyzed. The results showed that feed concentration, day feeding quantities and sludge recycle ratio were main influencing factors on two evaluating indication, and the mixed sludge recycle ratio had a significant effect. For the anaerobic fermentation system, the optimum parameters of process were feed concentration of 8.21%, day feeding quantities of 7.15L/d and sludge recycle ratio of 30%, respectively.

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夏吉慶,馬添翼,畢經(jīng)毅,鄭國香,李文哲.牛糞厭氧發(fā)酵污泥回流試驗[J].農(nóng)業(yè)機械學報,2011,42(4):105-109. Xia Jiqing, Ma Tianyi, Bi Jingyi, Zheng Guoxiang, Li Wenzhe. Sludge Recycle Trial of Cattle Manure Anaerobic Fermentation[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):105-109.

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