Refinery Wastewater: Oil & Grease Removal | Yokogawa Malaysia
Dissolved/ Air Flotation: Once treated, the wastewater often enters an air flotation unit to remove the emulsified oil as it begins to break free from the wastewater, using dissolved oxygen or nitrogen. Bioreactors (Activated sludge treatment): At this phase the wastewater still contains dissolved oil in a true molecular form. The only way to remove the remaining dissolved oil is thru biological treatment.
Refinery wastewater from Moustorod oil refinery, Cairo, Egypt, was treated by chemical coagulation. This step was followed by rapid solid-liquid separation using flotation under pressure of 4 atm
PALM OIL REFINERY WASTES TREATMENT - Universiti Putra Malaysia
Edible oil products in Singapore and MalaYsia are Palm oil refinery wastes treatment 1089 Table 2. Characteristics of palm oil refinery wastes oil and grease 20 mg 1-~. Dissolved air flotation sys- tem operated at 0.014A/S ratio (equivalent gauge pressure = 4 atm) thus achieved the same quality ef- fluent as that of a system using
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Environmental Impact of Petroleum Refining - ScienceDirect
Environmental Impact of Petroleum Refining. Leon H. Myers. Volume 7, Issue 4, Pages 235-311 (1982) Treatment of oily refinery wastes using a dissolved air flotation process. Ahmed S. Moursy, Sohair E. Abo El-Ela. Pages 267-270 Land treatment: A viable and successful method of treating petroleum industry wastes
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Manual on Disposal of Refinery Wastes
Manual on Disposal of Refinery Wastes Volume on Solid Wastes CHAPTER l--INTROOUCTION 1.1 Scope The manual is intended as a primer for a petroleum refinery engineer just starting to consider solid waste treatment and disposal. It provides a general descrip- tion of a possible refinery organization, waste charac-
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A review of treating oily wastewater - ScienceDirect
The results show that nano-porous membrane is efficient for the treatment of petroleum refinery waste water, so that total suspended solids, total dissolved solids, oil and grease content and chemical and biochemical oxygen demands are increased to 100%, 44.4%, 99.9%, 80.3% and 76.9%, respectively.
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Optimization of coagulation–flocculation and flotation
Flotation test suggested that 95% TPH removal could be achieved at 0.6 kg air kg −1 TPH. The coagulation–flocculation/flotation process can be considered as an efficient process for the treatment and clarification of refinery wastewaters whilst taking into account the optimised parameters obtained in this study.
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Refinery Wastewater: Oil & Grease Removal | Yokogawa Malaysia
Dissolved/ Air Flotation: Once treated, the wastewater often enters an air flotation unit to remove the emulsified oil as it begins to break free from the wastewater, using dissolved oxygen or nitrogen. Bioreactors (Activated sludge treatment): At this phase the wastewater still contains dissolved oil in a true molecular form. The only way to
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Dissolved-air Flotation As Applied to the Treatment of Oil
When used to treat refinery wastes, dissolved-air flotation usually follows a gravity oil-water separator which removes the bulk of the free oil 1 Dissolved-air flotation may be used with chemicals in order to facilitate higher degrees of removal. It is the purpose of this discussion to detail the process principles as well as some of the
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Treatment of oily wastewater produced from refinery
Treatment of oily wastewater produced from refinery processes using flocculation and ceramic membrane filtration Article in Separation and Purification Technology 32(1):93-98 · July 2003 with 125
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How to Treat Wastewater from Refinery?
Dissolved air floatation, both with and without flocculation, has been successfully used to obtain a low oil content in a refinery wastewater. Under favourable conditions it is possible to obtain an oil content of as low as 10 mg/l from a flotation cell using a coagulant and coagulant aid.
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WASTE WATER TREATMENT REFINERIES
Ultimate fate of refinery wastes The primary processes determining the fate of waste materials in an oil refinery may be summarized as: Dispersion in air and water Dissolution in water Emulsification Sedimentation Adsorption/absorption Spreading The waste materials may undergo some of these processes simultaneously.
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CONTINUOS TREATMENT OF OILY SLUDGE AT COLOMBIAN REFINERIES
wastes treated in this process come from maintenance of refinery´s equipment and also from the physical- chemical separation process at the industrial waste water treatment plant. Oily sludge is a complex system where light and heavy oils, contaminated water and contaminated solids
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Treatment of cutting oil/water emulsion by coupling
Treatment of cutting oil/water emulsion by coupling coagulation and dissolved air flotation Article in Desalination 206(1):440-448 · February 2007 with 1,000 Reads How we measure 'reads'
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Petroleum refining water/wastewater management
Figure 11 Typical refinery wastewater treatment 25 Figure 12 Desalter oil/water separation 26 Figure 13 Desalter effluent stripper 26 Figure 14 Segregated wastewater treatment 27 Figure 15 API separator 28 Figure 16 Dissolved air flotation— a typical DAF unit 29 Figure 17 Induced air flotation (IAF) unit 30 Figure 18 Activated sludge system 32
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