Abstract：
: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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Navaratna D,Shu L,Jegatheesan Vdoi
10.1016/j.biortech.2013.12.061subject
Has Abstractpub_date
2014-03-01 00:00:00pages
41-9eissn
0960-8524issn
1873-2976pii
S0960-8524(13)01901-9journal_volume
155pub_type
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