page 618 |
Previous | 1 of 8 | Next |
|
|
Loading content ...
The Effect of Inlet Conditions on Oil-Water Separators at Sohio's Toledo Refinery A. T. WALLACE, Assistant Professor of Civil Engineering Clemson University Clemson, South Carolina G. A. ROHLICH, Professor of Sanitary Engineering J. R. VILLEMONTE, Professor of Sanitary Engineering University of Wisconsin Madison, Wisconsin Laboratory studies on oil-water separators at the University of Wisconsin's Hydraulic and Sanitary Laboratory during the period from 1948 to 1950 (1) had shown conclusively that for comparable rates of flow, the major factor in basin hydraulic performance was the inlet design. A later field study at Hamburg, Germany comparing reaction-jet baffles with vertical post baffles (2) for removal of oil in parallel separators gave tacit support to the previous study. During the summer of 1964 the Standard Oil Company of Ohio (SOHIO), working in cooperation with the American Petroleum Institute (API) made two oil-water separators at their Toledo refinery available for a comparative study of hydraulic characteristics and oil removal. These separators were part of a bank of ten parallel basins, each receiving feed from a common channel. Oily waters enters an individual basin through three 18 in. by 18 in. slide gates which are operated by hand valves located on the walkway over the inlet end of the separators. The effluent leaves over simple weirs at the end of each separator and is conveyed away in a common channel. Each basin is 80 ft by 18 ft in plan and has a water depth of seven ft, 8 ins. Basin No. 1 had a simple overflow weir inlet and Basin No. 2 had an inlet consisting of four 10-in. reaction-jets, baffles 11 ins. in diameter with a three-in. hole at the center. Figures 1 and 2 show the basin and inlet details. METHODS AND PROCEDURES In general the experimental method was to obtain dispersion curves for both basins at comparable flow rates and to simultaneously measure the removal of oil by the basins. A sharp-crested weir with end contractions was installed in the effluent channel between the third and fourth basins to measure the combined discharge from basins 1 and 2. Basin No. 3 was not operated during the study so that it would not contribute to the measured discharge. The head on the weir was measured with both a point gage and a Steven's stage recorder located four ft upstream of the weir crest. Once the basin discharge had been regulated by means of the inlet slide gates, the head on the weir did not vary by more than one- hundredth of a ft from the mean. Dispersion curves were obtained in the following manner: 1. The basin slide gates at the inlet were adjusted until the appropriate point fage reading was obtained and the basin allowed to operate for at lease one full etention time to insure a stable flow condition before beginning a test. - 618 -
Object Description
Purdue Identification Number | ETRIWC196547 |
Title | Effect of inlet conditions on oil-water separators at Sohio's Toledo refinery |
Author |
Wallace, Alfred T., 1935- Rohlich, G. A. (Gerard A.) Villemonte, J. R. (James R.) |
Date of Original | 1965 |
Conference Title | Proceedings of the twentieth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,12162 |
Extent of Original | p. 618-625 |
Series |
Engineering extension series no. 118 Engineering bulletin v. 49, no. 4 |
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 | 2009-05-19 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 618 |
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 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | The Effect of Inlet Conditions on Oil-Water Separators at Sohio's Toledo Refinery A. T. WALLACE, Assistant Professor of Civil Engineering Clemson University Clemson, South Carolina G. A. ROHLICH, Professor of Sanitary Engineering J. R. VILLEMONTE, Professor of Sanitary Engineering University of Wisconsin Madison, Wisconsin Laboratory studies on oil-water separators at the University of Wisconsin's Hydraulic and Sanitary Laboratory during the period from 1948 to 1950 (1) had shown conclusively that for comparable rates of flow, the major factor in basin hydraulic performance was the inlet design. A later field study at Hamburg, Germany comparing reaction-jet baffles with vertical post baffles (2) for removal of oil in parallel separators gave tacit support to the previous study. During the summer of 1964 the Standard Oil Company of Ohio (SOHIO), working in cooperation with the American Petroleum Institute (API) made two oil-water separators at their Toledo refinery available for a comparative study of hydraulic characteristics and oil removal. These separators were part of a bank of ten parallel basins, each receiving feed from a common channel. Oily waters enters an individual basin through three 18 in. by 18 in. slide gates which are operated by hand valves located on the walkway over the inlet end of the separators. The effluent leaves over simple weirs at the end of each separator and is conveyed away in a common channel. Each basin is 80 ft by 18 ft in plan and has a water depth of seven ft, 8 ins. Basin No. 1 had a simple overflow weir inlet and Basin No. 2 had an inlet consisting of four 10-in. reaction-jets, baffles 11 ins. in diameter with a three-in. hole at the center. Figures 1 and 2 show the basin and inlet details. METHODS AND PROCEDURES In general the experimental method was to obtain dispersion curves for both basins at comparable flow rates and to simultaneously measure the removal of oil by the basins. A sharp-crested weir with end contractions was installed in the effluent channel between the third and fourth basins to measure the combined discharge from basins 1 and 2. Basin No. 3 was not operated during the study so that it would not contribute to the measured discharge. The head on the weir was measured with both a point gage and a Steven's stage recorder located four ft upstream of the weir crest. Once the basin discharge had been regulated by means of the inlet slide gates, the head on the weir did not vary by more than one- hundredth of a ft from the mean. Dispersion curves were obtained in the following manner: 1. The basin slide gates at the inlet were adjusted until the appropriate point fage reading was obtained and the basin allowed to operate for at lease one full etention time to insure a stable flow condition before beginning a test. - 618 - |
Resolution | 300 ppi |
Color Depth | 8 bit |
Tags
Comments
Post a Comment for page 618