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79 EVALUATION OF PHYSICAL, CHEMICAL, AND
BIOLOGICAL TREATMENT TO REMOVE FATS, OILS,
AND GREASE FROM PETROLEUM REFINERY WASTE
EFFLUENT PRIOR TO RECYCLING TO COOLING
TOWERS
David B. Mitchell, Senior Group Leader
GRACE Dearborn
Lake Zurich, Illinois 60047
Gene Way man, Research Associate
GRACE Dearborn
Lake Zurich, Illinois 60047
Tom Sulpizio, Manager Commercial Planning
Alan Chmurny, Manager Biological Chemistry
Don Durham, Staff Scientist Biological Chemistry
Don Fortney, Technical Associate Biological Chemistry
Washington Research Center
W. R. Grace & Company
Columbia, Maryland 21044
INTRODUCTION
A major refinery started to experience a reoccurring problem meeting Fats Oils and Grease (FOG)
discharge requirements (75 ppm). The existing treatment program consisted of catalyzed hydrogen
peroxide, primarily to oxidize thiosulfates, and polymer addition at the Wemco and Dissolved Air
Flotation (DAF) units. The polymers provided approximately 30-40% FOG removal with the effluent
concentrations ranging between 60-110 ppm. A comprehensive study was initiated with the following
objectives:
A. Determine the chemical composition of the FOG.
B. Evaluate all categories of potential treatment methods which included:
1. A comprehensive polymer screen
2. Adsorption/oxidation technologies
3. Biotreatment using a Fixed Film Bioreactor.
C. Evaluate the potential to recycle the waste water effluent to the Cooling Towers.
MATERIALS AND METHODS
Streaming Current Potential (SCP)
The SCPs of the unfiltered wastestreams (Wemco effluent, and DAF influent/effluent) were
determined using a Mutek PCD-02 and automatic tit rat or (Metrohm 702 SM Titrino). This procedure
determines how an emulsion is stabilized, and whether a polymer will destabilize the waste stream.
Fixed Film Bioreactor (FFBR)
In this study GRACE Dearborn utilized a FFBR. The proprietary support used was Type-Z. Microorganisms utilized were from a refinery SBR. Additional information pertaining to the chemical
support, such as the physical properties, approximate chemical composition and the advantages this
chemical support provides, with respect to recoveries from oxygen starvation etc., can be obtained
from GRACE Dearborn.
49th Purdue Industrial Waste Conference Proceedings, 1994 Lewis Publishers, Chelsea, Michigan 48118. Printed in
U.S.A.
745
Object Description
| Purdue Identification Number | ETRIWC199479 |
| Title | Evaluation of physical, chemical, and biological treatment to remove fats, oils, and grease from petroleum refinery waste effluent prior to recycling to cooling towers |
| Author |
Mitchell, David B. Wayman, Gene Sulpizio, Tom Chmurny, Alan Durham, Don Fortney, Don |
| Date of Original | 1994 |
| Conference Title | Proceedings of the 49th Industrial Waste Conference |
| Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,44602 |
| Extent of Original | p. 745-754 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital object copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Date Digitized | 2009-12-10 |
| Capture Device | Fujitsu fi-5650C |
| Capture Details | ScandAll 21 |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
Description
| Title | page 745 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Capture Device | Fujitsu fi-5650C |
| Capture Details | ScandAll 21 |
| Transcript | 79 EVALUATION OF PHYSICAL, CHEMICAL, AND BIOLOGICAL TREATMENT TO REMOVE FATS, OILS, AND GREASE FROM PETROLEUM REFINERY WASTE EFFLUENT PRIOR TO RECYCLING TO COOLING TOWERS David B. Mitchell, Senior Group Leader GRACE Dearborn Lake Zurich, Illinois 60047 Gene Way man, Research Associate GRACE Dearborn Lake Zurich, Illinois 60047 Tom Sulpizio, Manager Commercial Planning Alan Chmurny, Manager Biological Chemistry Don Durham, Staff Scientist Biological Chemistry Don Fortney, Technical Associate Biological Chemistry Washington Research Center W. R. Grace & Company Columbia, Maryland 21044 INTRODUCTION A major refinery started to experience a reoccurring problem meeting Fats Oils and Grease (FOG) discharge requirements (75 ppm). The existing treatment program consisted of catalyzed hydrogen peroxide, primarily to oxidize thiosulfates, and polymer addition at the Wemco and Dissolved Air Flotation (DAF) units. The polymers provided approximately 30-40% FOG removal with the effluent concentrations ranging between 60-110 ppm. A comprehensive study was initiated with the following objectives: A. Determine the chemical composition of the FOG. B. Evaluate all categories of potential treatment methods which included: 1. A comprehensive polymer screen 2. Adsorption/oxidation technologies 3. Biotreatment using a Fixed Film Bioreactor. C. Evaluate the potential to recycle the waste water effluent to the Cooling Towers. MATERIALS AND METHODS Streaming Current Potential (SCP) The SCPs of the unfiltered wastestreams (Wemco effluent, and DAF influent/effluent) were determined using a Mutek PCD-02 and automatic tit rat or (Metrohm 702 SM Titrino). This procedure determines how an emulsion is stabilized, and whether a polymer will destabilize the waste stream. Fixed Film Bioreactor (FFBR) In this study GRACE Dearborn utilized a FFBR. The proprietary support used was Type-Z. Microorganisms utilized were from a refinery SBR. Additional information pertaining to the chemical support, such as the physical properties, approximate chemical composition and the advantages this chemical support provides, with respect to recoveries from oxygen starvation etc., can be obtained from GRACE Dearborn. 49th Purdue Industrial Waste Conference Proceedings, 1994 Lewis Publishers, Chelsea, Michigan 48118. Printed in U.S.A. 745 |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
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