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Experimental Treatment of Citrus Waste Water ROBERT R. MCNARY, RICHARD W. WOLFORD, and MARSHALL H. DOUGHERTY Research Fellows Florida Citrus Experiment Station Lake Alfred, Florida The experience of the citrus processing industry has followed a familiar pattern in regard to its wastes. In the early days the operations of the canning plants were on a relatively small scale and usually intermittent. Wastes did not accumulate so fast that they became burdensome. Waste disposal was in what might be called the wheelbarrow stage. It required little foresight or planning. A little extra labor to man the wheelbarrow was all that was needed to dispose of the wastes. As the production was stepped up a change in procedure was unavoidable. Planning ahead of time was necessary for the satisfactory disposition of the wastes. This was especially true of solid wastes such as peel, rag, and seeds. Piles of decomposing orange and grapefruit peel were not only malodorous and unsightly but usually were also "in the way" and had to be moved elsewhere. The necessity for doing something about the solid wastes fostered the development of their dehydration to cattle feed. This by-product known as dried citrus pulp has been a satisfactory and profitable solution to the problem of disposition of solid wastes. Liquid citrus wastes are not in as favorable a position as are the solid wastes. While it is true that some of the more concentrated liquid wastes, such as press liquor obtained during the manufacture of dried pulp, are usually evaporated to citrus molasses, most of the weaker liquid wastes are discarded with little or no treatment. Liquid wastes are easily removed from the premises by gravity flow, which requires no attention. Indeed, attention is too often the last thing given liquid citrus wastes even though they may be creating a nuisance. The market value of citrus molasses fluctuates widely since it follows the price of blackstrap molasses. At times its manufacture results in an economic loss. No other by-product has been developed which will utilize the more concentrated waste sugar solutions. While it is true that some ethyl alcohol is produced from citrus liquids, these liquids are concen- 256
Object Description
Purdue Identification Number | ETRIWC195327 |
Title | Experimental treatment of citrus waste water |
Author |
McNary, Robert R. Wolford, Richard W. Dougherty, Marshall H. |
Date of Original | 1953 |
Conference Title | Proceedings of the eighth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=3119&REC=9 |
Extent of Original | p. 256-274 |
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 | 2008-09-22 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 256 |
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 | Experimental Treatment of Citrus Waste Water ROBERT R. MCNARY, RICHARD W. WOLFORD, and MARSHALL H. DOUGHERTY Research Fellows Florida Citrus Experiment Station Lake Alfred, Florida The experience of the citrus processing industry has followed a familiar pattern in regard to its wastes. In the early days the operations of the canning plants were on a relatively small scale and usually intermittent. Wastes did not accumulate so fast that they became burdensome. Waste disposal was in what might be called the wheelbarrow stage. It required little foresight or planning. A little extra labor to man the wheelbarrow was all that was needed to dispose of the wastes. As the production was stepped up a change in procedure was unavoidable. Planning ahead of time was necessary for the satisfactory disposition of the wastes. This was especially true of solid wastes such as peel, rag, and seeds. Piles of decomposing orange and grapefruit peel were not only malodorous and unsightly but usually were also "in the way" and had to be moved elsewhere. The necessity for doing something about the solid wastes fostered the development of their dehydration to cattle feed. This by-product known as dried citrus pulp has been a satisfactory and profitable solution to the problem of disposition of solid wastes. Liquid citrus wastes are not in as favorable a position as are the solid wastes. While it is true that some of the more concentrated liquid wastes, such as press liquor obtained during the manufacture of dried pulp, are usually evaporated to citrus molasses, most of the weaker liquid wastes are discarded with little or no treatment. Liquid wastes are easily removed from the premises by gravity flow, which requires no attention. Indeed, attention is too often the last thing given liquid citrus wastes even though they may be creating a nuisance. The market value of citrus molasses fluctuates widely since it follows the price of blackstrap molasses. At times its manufacture results in an economic loss. No other by-product has been developed which will utilize the more concentrated waste sugar solutions. While it is true that some ethyl alcohol is produced from citrus liquids, these liquids are concen- 256 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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