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在沼气发酵过程中，大量纤维素随气体上浮集结于液面，无法排出地外。日积月累，这些产气潜力不大的有机质就占去了沼气池相当一部分容积，降低语气产量，最终导致沼气地无法正常使用。近年来，我们依据“U”型管原理，试建了上层取料在家沼气池，较好地解决了这一问题，该池结
In biogas fermentation process, a large number of cellulose with the gas floating in the liquid surface, can not be discharged outside. Over time, these organic matter with little potential for gas production occupy a considerable part of the digester volume, reduce the tone of production and eventually lead to the normal use of biogas. In recent years, based on the “U” type pipe principle, we have tried to build a biogas digester at the upper level to solve this problem.