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首页> 外文会议>Water and environment technology conference >Methane Production in A Thermophilic Anaerobic Membrane Bioreactor by Anaerobic Co-digestion of Food Waste and Sewage Sludge
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Methane Production in A Thermophilic Anaerobic Membrane Bioreactor by Anaerobic Co-digestion of Food Waste and Sewage Sludge

机译：厨余和污水污泥厌氧共消化在嗜热厌氧膜生物反应器中生产甲烷

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摘要

The increase amount of food waste generated during the food transfer chain catches more and more attention because of the shortage of food and the improvement of living standard. Sewage sludge the major by-product from the conventional activated sludge process which is widely used to remove organics and nutrients in municipal and industrial wastewater plants. The huge volume and complex composition make sewage sludge the main drawback of the process. Anaerobic digestion is thought to be the most suitable method to treat these two kinds of waste. To improve the digestion efficiency, anaerobic co-digestion (AcoD) was proposed. Thermophilic anaerobic membrane bioreactor (ThAnMBR) combining the advantages of thermophilic anaerobic process and membrane filtration has been used in treating different kinds of sewage. However, this is the first time that ThAnMBR be used in AcoD of food waste and sewage sludge and works successfully. Chemical oxygen demand removal efficiency of 98% with an average methane yield of 0.569 L-CH_4 /g-VS_(added) were achieved at the co-substrate ratio of 75%:25% (food waste : sewage sludge). The methane recovery rate of this feeding condition is 99% and 188% of that of mono-digestion of food waste and sewage sludge.
机译：由于食品短缺和生活水平的改善，在食品转移链期间产生的食物浪费量增加了越来越多。污水污泥从传统的活性污泥过程中污泥，广泛用于去除市政和工业废水厂的有机物和营养。巨大的体积和复杂的组成使污水污泥成为该过程的主要缺点。厌氧消化被认为是治疗这两种废物的最合适的方法。提高消化效率，提出了厌氧共消化（ACOD）。嗜热厌氧膜生物反应器（比富氏素）结合了嗜热厌氧工艺和膜过滤的优点，用于治疗不同种类的污水。然而，这是第一次参加食物垃圾和污水污泥的ACOD和成功工作。化学氧需求去除效率为98％，平均甲烷产率为0.569L-CH_4 / g-Vs_（加入），在共衬底比为75％：25％（食品废物：污水污泥）。这种饲养条件的甲烷回收率为99％和188％的食物垃圾和污水污泥。

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