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CHEMISTRY AND APPLICATION OF OZONE AND ULTRAVIOLET LIGHT FOR WATER REUSE- PILOT PLANT DEMONSTRATION Jack D. Zeff, President Eriks Leitis, Director of Research Westgate Research Corporation West Los Angeles, California 90025 John A. Harris, Director Environmental Affairs Occidental Chemical Co. Lathrop, California 95330 INTRODUCTION This evaluation of the UV-ozonation process for water reuse was conducted with the sponsorship of the Office of Water Research and Technology (OWRT) of the Department of Interior, Robert Madancy, Program Officer. The overall objective of the program was to demonstrate on a small pilot plant scale at an industrial site the destruction of refractory and toxic organic residues in a slip stream of a wastewater, which after treatment can be reused. The wastewater should be typical of a large industrial consumer of water, and the water after treatment can be reused either in the plant or for other purposes, nearby, such as irrigation or ground water recharge. After contacting a number of chemical plants in the California area, the Agrichemical Plant of Occidental Chemical Company in Lathrop, California, offered a wastewater site to Westgate Research Corporation and OWRT to conduct these studies. The chemical industry falls within the category of a large consumer of water, since it uses 13.5 billion gallons per day with the industrial organic chemical segment using 7.1 billion gallons daily [1]. The agricultural chemical companies within this classification withdraw 942 million gallons per day [2]. The wastewater treated in this pilot plant evaluation is typical of many agrichemical industries in that it is a rinse water collected from the wash down of formulation equipment and from rainwater run-off. This wash water is collected and pumped to storage tanks, where periodically it is transported by tank truck to a Class I landfill site. If the toxic and refractory organic compounds were removed, the water could serve a useful purpose in the plant for cooling or other utilitarian purposes, or outside the plant it could be used for irrigation. Our purpose in this pilot plant study was to show that UV-ozonation would detoxify this water economically in a treatment train with possibly other pretreatment and post-treatment processes. BENCH EVALUATION OF THE WASTEWATER Prior to the installation of the pilot plant at Lathrop, representative samples of the wastewater were collected to determine the concentration of specific refractory organic compounds, total organic carbon (TOC) and pH. Also a series of bench scale UV/O3 evaluations were conducted on the water samples to obtain 105
Object Description
Purdue Identification Number | ETRIWC198314 |
Title | Chemistry and application of ozone and ultraviolet light for water reuse : pilot plant demonstration |
Author |
Zeff, Jack D. Leitis, Eriks Harris, John A. |
Date of Original | 1983 |
Conference Title | Proceedings of the 38th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,34749 |
Extent of Original | p. 105-116 |
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 | 2009-07-28 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 105 |
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 | CHEMISTRY AND APPLICATION OF OZONE AND ULTRAVIOLET LIGHT FOR WATER REUSE- PILOT PLANT DEMONSTRATION Jack D. Zeff, President Eriks Leitis, Director of Research Westgate Research Corporation West Los Angeles, California 90025 John A. Harris, Director Environmental Affairs Occidental Chemical Co. Lathrop, California 95330 INTRODUCTION This evaluation of the UV-ozonation process for water reuse was conducted with the sponsorship of the Office of Water Research and Technology (OWRT) of the Department of Interior, Robert Madancy, Program Officer. The overall objective of the program was to demonstrate on a small pilot plant scale at an industrial site the destruction of refractory and toxic organic residues in a slip stream of a wastewater, which after treatment can be reused. The wastewater should be typical of a large industrial consumer of water, and the water after treatment can be reused either in the plant or for other purposes, nearby, such as irrigation or ground water recharge. After contacting a number of chemical plants in the California area, the Agrichemical Plant of Occidental Chemical Company in Lathrop, California, offered a wastewater site to Westgate Research Corporation and OWRT to conduct these studies. The chemical industry falls within the category of a large consumer of water, since it uses 13.5 billion gallons per day with the industrial organic chemical segment using 7.1 billion gallons daily [1]. The agricultural chemical companies within this classification withdraw 942 million gallons per day [2]. The wastewater treated in this pilot plant evaluation is typical of many agrichemical industries in that it is a rinse water collected from the wash down of formulation equipment and from rainwater run-off. This wash water is collected and pumped to storage tanks, where periodically it is transported by tank truck to a Class I landfill site. If the toxic and refractory organic compounds were removed, the water could serve a useful purpose in the plant for cooling or other utilitarian purposes, or outside the plant it could be used for irrigation. Our purpose in this pilot plant study was to show that UV-ozonation would detoxify this water economically in a treatment train with possibly other pretreatment and post-treatment processes. BENCH EVALUATION OF THE WASTEWATER Prior to the installation of the pilot plant at Lathrop, representative samples of the wastewater were collected to determine the concentration of specific refractory organic compounds, total organic carbon (TOC) and pH. Also a series of bench scale UV/O3 evaluations were conducted on the water samples to obtain 105 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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