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UASB启动及不同浓度垃圾渗滤液的处理效果

Keywords: UASB,老龄垃圾渗滤液,浓度

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Abstract:

在UASB反应器中接种好氧污泥培养厌氧颗粒污泥进行启动,研究不同浓度老龄(13年)垃圾渗滤液对处理效果的影响情况。通过保持进水COD浓度不变、逐步缩短HRT从而提高容积负荷到20gCOD/(L·d)的方法,可以培育出直径为1~3mm颗粒污泥,最终产气量稳定在60~70L/d,甲烷含量在50%~70%之间,COD去除率保持在90%左右,污泥层最底部MLSS为50g/L。逐步提高进水中渗滤液的含量考察其对处理效果的影响,当进水为100%渗滤液时日产气量为500mL/d、COD去除率仅为10%,表明渗滤液中多为难降解性有机物质。

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