College of Engineering and Science, Victoria University, Footscray Park Campus, Ballarat Road, Footscray, Melbourne, VIC 8001, Australia.
School of Engineering, Deakin University, Waurn Ponds Campus, Geelong, VIC 3216, Australia.
Bioresour Technol. 2014 Mar;155:41-9. doi: 10.1016/j.biortech.2013.12.061. Epub 2013 Dec 27.
A laboratory scale membrane bioreactor (MBR) consisting of worms was operated for 214days. The objective was to evaluate the treatment and operating performance of the MBR with and without the addition of Ametryn which is a toxic and persistent herbicide. Removal of Ametryn was doubled (up to 80%) in the MBR when the worms were present. Increased rate (2.5kPa/day) of trans-membrane pressure (TMP) and low concentration of MLSS (5.5g/L) were recorded when the worm population was high (80-100 worms per 70μL). Short-term critical flux values were increased from 7.5 to 15 and then to 30L/m(2)/h when the worm numbers decreased from 90 to 35 and then to 18 per 70μL of mixed liquor respectively. Further, high levels of carbohydrate concentration of soluble microbial products (SMP) and smaller sludge floc-sizes were found when the worm numbers were high.
采用实验室规模的膜生物反应器（MBR）进行了 214 天的运行。该实验的目的是评估在添加和不添加莠去津的情况下，MBR 的处理和运行性能。莠去津是一种有毒且持久的除草剂，当添加到 MBR 中时，其去除率提高了一倍（达到 80%）。当线虫数量较高（每 70μL 中有 80-100 条线虫）时，跨膜压力（TMP）的上升速率（2.5kPa/天）和低浓度的混合液悬浮固体（MLSS）（5.5g/L）会被记录下来。当线虫数量从 90 条减少到 35 条，然后减少到 18 条/70μL 时，短期临界通量值分别从 7.5L/m(2)/h 增加到 15L/m(2)/h，然后增加到 30L/m(2)/h。此外，当线虫数量较高时，发现溶解性微生物产物（SMP）中的碳水化合物浓度较高，污泥絮体尺寸较小。
