Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 149, Issue 3, Pages 700-706Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2007.04.031
Keywords
slaughterhouse wastewater; anaerobic membrane bioreactor; fixed bed reactor
Categories
Ask authors/readers for more resources
High rate anaerobic treatment systems such as anaerobic membrane bioreactors (AMBR) are less popular for slaughterhouse wastewater due to the presence of high fat oil and suspended matters in the effluent. This affects the performance and efficiency of the treatment system. In this work, AMBR has been tried for slaughterhouse wastewater treatment. After the start up period, the reactor was operated with an average organic loading rate (OLR) of 4.37 kg TCOD m(-3) d(-1) with gradual increase to an average of 13.27 kg TCOD m(-3) d(-1). At stable conditions, the treatment efficiency was high with an average COD and BOD5 reduction of 93.7 and 93.96%, respectively. However, a reduction in the AMBR performance was shown with the increase of the OLR to 16.32 kg TCOD m(-3) d(-1). The removal efficiencies of SCOD and BOD5 were drastically decreased to below 53.6 and 73.3%, respectively. The decrease of the AMBR performance was due to the accumulation of VFAs. Thus, a new integrated system composed of a FBR for the acidogenesis step followed by the AMBR for methanogenesis step was developed. At high ORL, the integrated system improved the performance of the anaerobic digestion and it successfully overcame the VIA accumulation problem in the AMBR. The anaerobic treatment led to a total removal of all tested pathogens. Thus, the microbiological quality of treated wastewater fits largely with WHO guidelines. (c) 2007 Elsevier B. V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available