Excess sludge reduction induced by Tubifex tubifex in a recycled sludge reactor
Excess sludge reduction induced by Tubifex tubifex in a recycled sludge reactor
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DOI：
10.1016/j.jbiotec.2006.07.035
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发表时间：
2007-01-10
影响因子：
4.1
通讯作者：
Qian, Yi
中科院分区：
文献类型：
--
作者：
Huang, Xia;Liang, Peng;Qian, Yi
研究了常规活性污泥法（CAS）与接种寡毛纲植物Tubifex tubifex的循环污泥反应器相结合的污泥减量效果。结果表明，T.蚯蚓对回收污泥反应器中污泥的捕食作用。T. tubifex（R）为0.18 ~ 0.81 mg-VSS mg-Tubifex（-1）d（-1）。循环污泥反应器E的污泥减量能力为650 ~ 1080 mg·VSS·L ~（-1）·d ~（-1）。T. tubifex为2500 mg L-1，最佳污泥回流比为1. T.蚯蚓对COD和NH 4 +-N的去除率没有影响，但对TP的去除率略有降低。SVI在T.水蚯蚓密度低于3300 mg L-1。对T.铜和氨的最大吸收量分别为2.5和880 mg L-1，均高于红斑体虫。(c)2006 Elsevier B. V.保留所有权利。
Sludge reduction in a conventional activated sludge (CAS) process combined with a recycled sludge reactor where Tubifex tubifex (one of Oligochaeta) was inoculated was investigated in this study. The results showed sludge production could be reduced through T. tubifex's predation on sludge in the recycled sludge reactor. The sludge reduction rate of T. tubifex (R) was from 0.18 to 0.81 mg-VSS mg-Tubifex(-1) d(-1). The sludge reduction capacity of the recycled sludge reactor E was from 650 to 1080 mg-VSS L-1 d(-1). The optimum density of T. tubifex was 2500 mg L-1 and the optimum sludge recycled ratio was 1. The existence of T. tubifex did not affect COD and NH4+-N removals in the process, but led to a slight decrease in TP removal. SVI almost did not change when the T. tubifex density was lower than 3300 mg L-1. The LC50 values on T. tubifex of copper and ammonia were 2.5 and 880 mg L-1, respectively, both of which were higher than those on Aeolosoma hemprichi. (c) 2006 Elsevier B.V. All rights reserved.