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OALib Journal期刊
ISSN: 2333-9721
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投加甲烷鬃菌对厌氧颗粒污泥培养的影响
DOI: 10.3724/SP.J.1145.2014.00169, PP. 169-173
Keywords: egsb,有机负荷,颗粒污泥,甲烷鬃菌
Abstract:
通过在中温条件下向egsb（expandedgranularsludgebed，膨胀颗粒污泥床）反应器中加入竹节状甲烷鬃菌6ac，研究其对颗粒污泥形成的影响以及形成的颗粒污泥性质和反应器运行的情况.在（35±1）℃下，利用实验室相同规模的反应器，对照组（r1）接种厌氧絮状污泥，r2组接种厌氧絮状污泥的同时加入甲烷鬃菌，培养颗粒污泥.结果显示：当有机负荷（以cod计）逐步提高到11.1kgm-3d-1时，r2的cod去除率达到85.9%，高于r1的75.0%.运行到第46天（d46）时两个反应器均可观测到颗粒污泥，r2中污泥粒径大于0.1mm的颗粒污泥已经达到62.3%，d28-46时，0.1-0.3mm颗粒的比例从10.0%增加到49.8%，对照组r1只从10%增加到33.3%，仍主要以絮状污泥为主.研究表明，颗粒污泥培养过程中投加甲烷鬃菌有利于促进颗粒污泥的形成、增殖与稳定，改善其沉降性能，提高有机物的去除效果，加快egsb的启动.
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