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" Formal methods in databases and software engineering : "
V.S. Alagar ... (ed.) Publ. in collab. with the British Computer Society
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1112742
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| Doc. No
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TLpq230751352
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| Main Entry
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I. M. Al-Harazin
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| Title & Author
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Biological treatment of hazardous contaminants in sequencing batch reactors\ I. M. Al-Harazin
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| College
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King Fahd University of Petroleum and Minerals (Saudi Arabia)
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| Date
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1992
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| student score
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1992
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| Degree
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M.S.
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| Page No
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184
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| Abstract
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The effect of 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-cresol at toxicant loading in the ranges of 100-800 kg phenol/m-day and 100-600 kg cresol/m-day at SRTs of 10 days and above with the effluent BOD and TSS concentrations consistently about 5 and 12 mg/l, respectively. However, a rapid breakthrough resulting in only 65% removal efficiency of phenolics at loads of 800 kg phenol/m-day and 600 kg cresol/m-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 loading 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.
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Applied sciences
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Chemical engineering
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Civil engineering
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Civil engineering
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Sanitation
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Sanitation
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