Biological treatment of hazardous contaminants in sequencing batch reacors

(1992) Biological treatment of hazardous contaminants in sequencing batch reacors. Masters thesis, King Fahd University of Petroleum and Minerals.


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The effect of the organic loading rates and the solids residence time (SRT) on the aerobic treatment of phenol and o-cresol bearing wastewater by sequencing batch reactors (SBRs) was investigated. SBRs were utilized to treat phenol and o-cresol, aerobically at a hydraulic retention time (HRT) of one day and varying SRTs. The reactors achieved over 99.5% removal of phenol and o-crsol at toxicant loading in the ranges of 100-800 kg phenol/m³-day at SRTs of 10 days and above with the effluent BOD and TSS concentrations consistently about 5 and 12 mg/1, respectively. However, a rapid breakthrough resulting in only 65% removal efficiency of phenolics at loads of 800 kg phenol/m³-day occurred at 3 and 5-day for phenol, and o-cresol, respectively, simultaneously with a breakthrough of total suspended solids (TSS). The rapid deterioration in effluent quality ensued toxicant loadings of 0.7 mg phenol/mg MLVSS and 0.8 mg cresol/mg MLVSS. Better than 94% phenol removal efficiency was achievable at the 5-day SRT biotreatment.

Item Type: Thesis (Masters)
Subjects: Civil Engineering
Department: College of Design and Built Environment > Civil and Environmental Engineering
Committee Advisor: Nakhla, Girgis F.
Committee Members: Hussain, M. Sakhawat and Osei-Twum, E. Y. and Farooq, Shaukat
Depositing User: Mr. Admin Admin
Date Deposited: 22 Jun 2008 13:53
Last Modified: 01 Nov 2019 13:53