一、前言 通过在椭球A型、椭球B型、小型组合析流式沼气池、椭球A型池底加圈四种池型对血吸虫卵的杀灭效果的研究试验,认为要确保出肥无活虫卵的关键在于:一是使进池发酵的新鲜料液的虫卵随沉渣能有序的沉降和集中,便于取出;二是进料口距出渣管口相距尽可能远,以延长滞留时间;三是出沉渣时,必须由老到新,取出的渣肥必须是在池内沉降时间最久的,以保证有足够时间杀死血吸虫卵。 我们设计将椭球B型沼气池沿长轴方向倾斜15°,并在靠出渣管口处建一凹槽,这样沼气池底部 I. INTRODUCTION The research on the killing effect of Schistosoma japonicum eggs on four types of pools, including ellipsoidal A type, ellipsoidal B type, small combined type digester and ellipsoidal type A bottom pool, Fertile live eggs is the key: First, into the pool of fresh feed liquid fermentation eggs with sediment can orderly settlement and concentration, easy to remove; the second feed inlet from the slag nozzle away from as far as possible, To prolong the residence time; third is out of sediment, you must from old to new, remove the slag fertilizer must be the longest sedimentation in the pool to ensure enough time to kill schistosome eggs. We designed the ellipsoidal B-type biogas tank inclined along the long axis direction 15 °, and in the slag by the mouth to create a groove, so that the bottom of the digester