摘要
为了研究水蚯蚓污泥捕食减量化,在两种填料上负载水蚯蚓进行污泥减量效果对比试验研究。研究结果表明:水蚯蚓可在组合填料的生物膜上大量繁殖生长并摄食污泥,利用组合填料负载水蚯蚓降低剩余污泥产率效果非常明显,投加和未投加水蚯蚓反应器的平均剩余污泥产率分别为0.0115,0.2353 g/g;而弹性填料负载水蚯蚓的反应器污泥减量效果不明显,投加和未投加水蚯蚓反应器的平均剩余污泥产率分别为0.1556,0.1831 g/g。弹性填料不适于负载水蚯蚓。由于水蚯蚓的捕食作用使反应器中污泥的沉降性能得到改善和提高,污泥中有机物所占比率下降。
In order to investigate the effect of activated sludge reduction through predation of tubifex,two different loading fillers were researched.The results indicated that in the case of biofilm with combined filler,tubifex could obviously decrease sludge yield.The reactor's average residual yield was 0.0115,0.2353 g /g in the control and worm reactor respectively.While in the case of the elastic filler,the reactor's average residual yield was 0.1556,0.1831 g /g in the control and worm reactor.It can be concluded that elastic filler is unfit for the loading of tubifex on sludge reduction.Anyway,the settleability of sludge could be improved and the proportion of the organics be decreased in excess sludge due to predation of tubifex.
出处
《环境工程》
CAS
CSCD
北大核心
2014年第8期96-100,共5页
Environmental Engineering
关键词
填料
水蚯蚓
活性污泥
减量化
loading filler
tubifex
activated sludge
reduction
