Effect of wastewater composition on methanogenic activity in an anaerobic reactor.
In this study, effects of a chemical synthesis-based pharmaceutical wastewater on activity of acetoclastic methanogens within a lab-scale anaerobic completely stirred tank reactor (CSTR) were investigated. The CSTR was initially fed with glucose and loaded up to an organic loading rate of 6 kg COD m(-3) d(-1) at which 92% soluble COD removal efficiency was achieved. Acetoclastic methanogenic activity was found to be 336 mL CH4 gTVS(-1) d(-1). The CSTR was then, fed with several dilutions of preaerated wastewater with glucose at 10% wtv(-1), 30% wtv(-1), and 70% wtv(-1) ratios and followed by 100% wtv(-1) preaerated wastewater. In the latter, 71% soluble COD removal efficiency was obtained and a maximum acetoclastic methanogenic activity was 166 mL CH4 gTVS(-1) d(-1). Finally, raw wastewater diluted with preaerated wastewater was fed into the CSTR in increasing ratios of 10-60% wtv(-1). Total failure of anaerobic reactor was observed at 60% wtv(-1) raw wastewater fed. The study was, therefore, discontinued due to poor acetoclastic methanogenic activity of reactor sludge which was totally distorted.
Oz
Nilgun Ayman
NA
Bogazici University, Institute of Environmental Sciences, Istanbul, Turkey.
Ince
Orhan
O
Ince
Bahar Kasapgil
BK
D001421:Bacteria, Anaerobic / Q000502:physiology*; D019149:Bioreactors; D004345:Drug Industry; D007220:Industrial Waste; D008697:Methane / Q000032:analysis*; D004364:Pharmaceutical Preparations; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants
D007220:Industrial Waste; D004364:Pharmaceutical Preparations; D014873:Water Pollutants; D008697:Methane