【摘要】 研究不同工况、不同滤料(陶粒和石英砂)条件下蚯蚓生物滤池对污泥的减量化效果,分析滤池中影响污泥减量化的因素,结果表明,系统污泥减量率可达38.20%~48.20%(质量分数),系统总体效果与蚯蚓对污泥的消减效率呈正相关;23~28℃时,蚯蚓消减污泥的效率达到最高值,系统污泥减量化效果最佳;水力负荷过大影响蚯蚓的正常生命活动及其消减污泥的效率;与石英砂相比,陶粒为滤料时蚯蚓消减污泥的效率更高,系统污泥减量化效果更好,这主要与滤料对蚯蚓个体的胁迫程度有关.更多还原

【Abstract】 The paper presents the sludge reduction of earthworm bilofilter in the conditions of different operating modes and filter mediums as well as factors that affect sludge reduction in the filter.The results show that the sludge reduction rate is about 38.20%～48.20%.The whole effect of the system is mainly reacted to earthworms’ sludge reduction efficiency.The proper temperature for the efficiency is 23～28 ℃.Hydraulic overloading is somehow negative to earthworms’ normal activities and the sludge reduction.Compared with quartz sands,earthworms’ sludge reduction efficiency in ceramsites is higher,and the whole effect of the system is better.It is mostly due to the damage to earthworms caused by filter mediums.更多还原