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\ Some Problems Encountered in Spray Irrigation of Canning Plant Waste R. A. CANHAM Sanitary Engineer National Canners Association Washington, D. C. The two types of waste generally produced from canning plants are liquid and solid. Liquid wastes originate from (1) cleaning and washing food products, (2) equipment and floor washing, (3) processes in which water has a functional use as a means of hydraulic transportation, extraction, cooling, etc., (4) spillage or wastage of liquid foods or ingredients, (5) concentrates, and (6) condensates. Solid wastes originate either from the food material itself (rejects, trimmings, inedible parts, adhering soil) or residues from unit operations (extraction, etc.). Conversion of certain solid wastes to usable byproducts may be economically feasible. Except for a few cases the concentration of soluble organic materials in liquid wastes does not warrant by-product recovery. The subject of food canning waste disposal of the liquid waste is one which presents practically unlimited problems due to a number of factors and, therefore, requires special attention to each individual canner's situation. The first factor involved is that the majority of canning operations are seasonal in nature, although some few are practically year round. This means that a waste treatment system must usually be relatively low in capital investment and always reasonable in operating cost. Second, the waste characteristics from each product are different from those of other products. Each type of canning waste has a different range of pollutional potential as measured by the organic content of the waste. This strength is commonly reported as 5-day biochemical oxygen demand (B.O.D.). As is widely known, it is not a completely satisfactory test but is the best available at the present time. In actuality, the B.O.D. is used as a comparative index of the waste strength and is valuable because some regulatory agencies require treatment to a certain B.O.D. level. For purposes of comparison the strength of domestic waste in terms of B.O.D. is usually near 200 p.p.m., while the range of canning waste 120
Object Description
Purdue Identification Number | ETRIWC195510 |
Title | Some problems encountered in spray irrigation of canning plant waste |
Author | Canham, R. A. |
Date of Original | 1955 |
Conference Title | Proceedings of the tenth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=4339&REC=17 |
Extent of Original | p. 120-134 |
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 120 |
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 | \ Some Problems Encountered in Spray Irrigation of Canning Plant Waste R. A. CANHAM Sanitary Engineer National Canners Association Washington, D. C. The two types of waste generally produced from canning plants are liquid and solid. Liquid wastes originate from (1) cleaning and washing food products, (2) equipment and floor washing, (3) processes in which water has a functional use as a means of hydraulic transportation, extraction, cooling, etc., (4) spillage or wastage of liquid foods or ingredients, (5) concentrates, and (6) condensates. Solid wastes originate either from the food material itself (rejects, trimmings, inedible parts, adhering soil) or residues from unit operations (extraction, etc.). Conversion of certain solid wastes to usable byproducts may be economically feasible. Except for a few cases the concentration of soluble organic materials in liquid wastes does not warrant by-product recovery. The subject of food canning waste disposal of the liquid waste is one which presents practically unlimited problems due to a number of factors and, therefore, requires special attention to each individual canner's situation. The first factor involved is that the majority of canning operations are seasonal in nature, although some few are practically year round. This means that a waste treatment system must usually be relatively low in capital investment and always reasonable in operating cost. Second, the waste characteristics from each product are different from those of other products. Each type of canning waste has a different range of pollutional potential as measured by the organic content of the waste. This strength is commonly reported as 5-day biochemical oxygen demand (B.O.D.). As is widely known, it is not a completely satisfactory test but is the best available at the present time. In actuality, the B.O.D. is used as a comparative index of the waste strength and is valuable because some regulatory agencies require treatment to a certain B.O.D. level. For purposes of comparison the strength of domestic waste in terms of B.O.D. is usually near 200 p.p.m., while the range of canning waste 120 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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