【摘要】 利用厌氧悬浮颗粒污泥床反应器,以自配水为基质,通过微生物的反硝化作用和产甲烷作用成功实现了在单级反应器中去除硝酸盐和水中有机质的目的。反应器开始接种的污泥是产甲烷颗粒污泥,通过不断提高进水中硝酸盐的浓度,使厌氧颗粒污泥逐渐适应水中的硝酸盐,反硝化剩余的有机碳源转化为甲烷气体。在硝酸盐负荷为0.75 kgNO3--N.m-3d-1和COD负荷为14.1 kgCOD.m-3d-1的稳态下,硝酸盐和有机碳的去除率分别为99.5%和90.1%以上。对反应器产生的气体所进行的气体组成测试表明,加入的硝酸盐全部转化为氮气,这一结果表明发生了真正的反硝化反应。更多还原

【Abstract】 Denitrification and methanogenesis of a synthetic wastewater were obtained in a single-stage process using anaerobic suspended granular sludge reactor.The reactor was initially inoculated with methanogenic granular sludge and was gradually adapted to nitrate by increasing the nitrate concentration in the influent.Excess carbon not utilized for denitrification was converted to methane.During steady stage at a loading of 0.75 kgNO-3-N · m-3d-1 and 14.1 kgCOD · m-3d-1,nitrate removal of over 99.5% and carbon removal of 90.1% were achieved.Lab analysis showed that nearly the entire nitrate was recovered as nitrogen,indicating that true denitrification occurred.更多还原