کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4752216 | 1415999 | 2016 | 9 صفحه PDF | دانلود رایگان |
- HG-SBR minimized inhibitory effect towards biochemical activities of microbial.
- High biomass from bio-film and bio-sludge enhanced resistivity to toxic substances.
- Highly reductive bioreactors due to the capability of mineralized organic compound.
The treatment of toxic organic compound phenol through sequencing batch reactor (SBR) is known to be effective especially in aerobic conditions. The three major biological treatment processes under aerobic condition are suspended, attached and hybrid growth process. In this study, two different growth systems using laboratory scale aerobic sequencing batch reactors (SBR) were tested to evaluate the biodegradation efficiency of phenol. The objective of this study is to evaluate the performances of two SBR bioreactors with suspended (SG-SBR) and hybrid (HG-SBR) microorganism growth system for removal of phenol containing wastewater. The activated sludge containing microorganisms are maintained in suspension under the suspended system, while granular activated carbon (GAC) was added to promote the formation of biofilm in hybrid system. Both systems were operated with FILL:REACT:SETTLE:DRAW in the time ratio of 1:20:2:1 for a cycle time of 24Â h. The average phenol removal were above 80% in the presence of 25Â mg/L, 50Â mg/L, 75Â mg/L and 100Â mg/L for both system. The kinetic studies conducted showed that HG-SBR minimized the inhibitory effect of phenol towards the biochemical activities of the microorganisms compared to SG-SBR.
Journal: Biochemical Engineering Journal - Volume 115, 15 November 2016, Pages 14-22