Biodegradation of phenol by aerobic granulation technology.
High organic load and fluctuation in organic load in terms of total phenols is fed into a SBR of higher height and diameter ratio (H/D 20) and operated at 4 h cycle basis with a volumetric exchange ratio of 50% resulting in a constant HRT of 8 h. Successful cultivation of aerobic granules was achieved. Aerobic granulation technology system withstands the inhibitory effect as well as fluctuation of organic load and a better efficiency as compared to traditional activated sludge process. Maximum phenol concentration of 650 mg l(-1) is treated efficiently in 4 h which is equal to an organic load of 3.9 kg m(-3) d(-1). After granulation the effluent phenol and COD concentrations were 3 mg l(-1) and 41 mg l(-1) respectively. Phenol removal efficiency and COD removal efficiency of 94% and 95% were achieved. Effluent O.D.(600) stabilizes at 0.15 which corresponds to minimum loss of biomass, which is the main advantage of SBR.
Khan
Farah
F
Environmental Research Laboratory, Department of chemistry, Aligarh Muslim University, Aligarh, 202002. drsuhailsabir@gmail.com
Zain Khan
Mohammad
M
Qamar Usmani
Shams
S
Sabir
Suhail
S
D000332:Aerobiosis; D001673:Biodegradation, Environmental; D019149:Bioreactors; D008855:Microscopy, Electron, Scanning; D019800:Phenol / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism
D014874:Water Pollutants, Chemical; D019800:Phenol