title: Anoxic treatment of phenolic wastewater in sequencing batch reactor.
abstract: Studies were conducted on the anoxic phenol removal using granular denitrifying sludge in sequencing batch reactor at different cycle lengths and influent phenol concentrations. Results showed that removal exceeded 80% up to an influent phenol concentration of 1050 mg/l at 6 h cycle length, which corresponded to 6.4 kg COD/m3/d. Beyond this, there was a steep decrease in phenol and COD removal efficiencies. This was accompanied by an increase in nitrite concentration in the effluent. On an average, 1 g nitrate-N was consumed per 3.4 g phenol COD removal. Fraction of COD available for sludge growth was calculated to be 11%.
authors.affiliation: Biotechnology Laboratory, Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India.
authors.forename: Sami
authors.initials: S
authors.lastname: Sarfaraz
authors.forename: Swapna
authors.initials: S
authors.lastname: Thomas
authors.forename: U K
authors.initials: UK
authors.lastname: Tewari
authors.forename: Leela
authors.initials: L
authors.lastname: Iyengar
mesh_terms: D019149:Bioreactors; D007220:Industrial Waste; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000378:metabolism*; D010100:Oxygen; D010636:Phenols / Q000302:isolation & purification* / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants / Q000302:isolation & purification* / Q000378:metabolism*
chemical_list: D007220:Industrial Waste; D009566:Nitrates; D010636:Phenols; D014873:Water Pollutants; D009584:Nitrogen; D010100:Oxygen