【摘要】 在试验室静态装置中培养高温厌氧颗粒污泥的试验表明,以常温颗粒污泥为种泥,中温启动运行一段时间后,再升温至高温,经过73天运行可培养出具有高生物活性的高温颗粒污泥。所培养出的颗粒污泥粒径以0 6～1 4mm为主;VSS/SS为0 70,Vmax·CH4为532ml·g-1d-1;颗粒内部菌种分层分布,中心以短杆菌为主,由内至外,丝状细菌分泌物逐渐增多,在颗粒表面形成一层壳。高温颗粒污泥的"壳"结构增强了颗粒污泥抗温度变化的能力,但延缓了中温菌的淘汰及高温菌的增长,延长了颗粒污泥从中温到高温的转型时间。更多还原

【Abstract】 The cultivation of higher activity thermophilic anaerobic granular sludge was achieved by increasing the temperature gradually from mesophilic range to thermophilic range in batch experiments in 73 days seeding with ambient anaerobic granular sludge The diameter of the thermophilc cultivated granular sludge is mainly from 06 mm～14 mm with VSS/SS 070 and Vmax·CH4 532 ml·g-1d-1 The center of thermophilic granules were packed with rodshaped bacteria, the reticular substance increased gradually from the interior of granules to the exterior of granules and covered entirely the whole surface of granules like a shell The shellshaped structure of thermophilic granules functioned to resist tempertureshock and defer decease of mesophilic bacteria and multiplication of thermophilic bacteria更多还原