Wetsus, Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900 CC Leeuwarden, The Netherlands.
Water Res. 2011 Oct 15;45(16):4923-9. doi: 10.1016/j.watres.2011.06.031. Epub 2011 Jul 2.
Treatment of domestic waste water results in the production of waste sludge, which requires costly further processing. A biological method to reduce the amount of waste sludge and its volume is treatment in an aquatic worm reactor. The potential of such a worm reactor with the oligochaete Lumbriculus variegatus has been shown at small scale. For scaling up purposes, a new configuration of the reactor was designed, in which the worms were positioned horizontally in the carrier material. This was tested in a continuous experiment of 8 weeks where it treated all the waste sludge from a lab-scale activated sludge process. The results showed a higher worm growth rate compared to previous experiments with the old configuration, whilst nutrient release was similar. The new configuration has a low footprint and allows for easy aeration and faeces collection, thereby making it suitable for full scale application.
处理生活污水会产生废水污泥，需要进行昂贵的进一步处理。在水蚯蚓反应器中进行生物处理是减少废污泥量和体积的一种方法。在小规模下，已经证明了寡毛类环节动物 Lumbriculus variegatus 的这种蚯蚓反应器具有潜力。为了扩大规模，设计了一种新的反应器配置，其中将蚯蚓水平放置在载体材料中。在连续 8 周的实验中对其进行了测试，该实验用实验室规模的活性污泥工艺处理了所有的废水污泥。结果表明，与旧配置的先前实验相比，蚯蚓的生长速度更高，而养分释放则相似。新配置占地面积小，便于充气和粪便收集，因此非常适合大规模应用。
