Survey of dissolved air flotation system efficiency for reduce of pollution of vegetable oil industry wastewater

Keramati, H. and Alidadi, H. and Parvaresh, A. R. and Movahedian, H. and Mahvi, A. H. (2008) Survey of dissolved air flotation system efficiency for reduce of pollution of vegetable oil industry wastewater. Pakistan Journal of Biological Sciences, 11 (19). pp. 2364-2366.

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Abstract

The aim of this research was to sudy the reduction of pollution of vegetable oil manufacturing wastewater with DAF system. At first phase of this examination, the optimum dosage of the coagulants was determined. The coagulants that used in this study were Alum and Ferric Chloride. The second phase was flotation in this series of examinations, oil, COD , total solid, volatile solid, fixed solid and suspended solid measured in raw wastewater and the effluent of the DAF pilot. Optimum value of pH for alum and ferric chloride obtained 7.5 and 5.5, respectively. Optimum dosage for these obtained 30 and 32 mg L-1 in this research. Mean removal for the parameters of oil, COD, total solid, volatile solid, fixed solid and suspended solid obtained 75.85, 78.27, 77.32, 82.47, 73.52 and 85.53, respectively. With pressure rising from 3 to 4 and 5 atm removing rate of COD, total solid, volatile solid, fixed solid parameters reduced , but oil and suspended solid have increase. In addition, following increase of flotation time up to 120 sec all of the measured parameters have increase in removing rate. Optimum A/S for removal of COD, total solid, volatile solid, fixed solid parameters obtained 0.001 and for oil and suspended solid obtained 0.0015. © 2008 Asian Network for Scientific Information.

Item Type: Article
Additional Information: Export Date: 16 February 2020 Correspondence Address: Alidadi, H.; Department of Environmental Health, Faculty of Health, Mashhad University of Medical SciencesIran
Uncontrolled Keywords: Alum Chloride ferric Dissolved air flotation Pollution Vegetate oil industry aluminum potassium sulfate aluminum sulfate ferric chloride ferric ion vegetable oil air article bioreactor bioremediation industrial waste methodology pilot study sewage water pollution Alum Compounds Biodegradation, Environmental Bioreactors Ferric Compounds Pilot Projects Plant Oils Waste Disposal, Fluid Water Pollution, Chemical
Subjects: WA Public Health
QU Biochemistry
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib3 lib3
Date Deposited: 27 Apr 2020 04:34
Last Modified: 27 Apr 2020 04:34
URI: http://eprints.mums.ac.ir/id/eprint/16888

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