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Recent Developments in the Design of Small Milk Waste Disposal Plants j. p. horton and h. a. trebler Assistant to the President of Laboratories and Head of Engineering Research National Dairy Research Laboratories, Inc. Oakdale, L. I., New York Unlike most other industries that have a serious waste disposal problem, the dairy industry is faced with the prospect of having to erect a large number of relatively small treatment plants for country milk receiving stations or small processing plants which are not on or near municipal sewerage systems. Because of their rural locations, the streams to which these plants discharge their wastes frequently are good fishing streams so that there is considerable pressure to eliminate pollution. Many country receiving stations, although presently increasing in size, are very small by most manufacturing standards, receiving only 30-60,000 pounds of milk per day and employing just two or three men. The magnitude of the waste disposal problem of each plant is also small by most waste treatment plant standards. Table I gives some examples of the waste volume from a few plants of our associated companies in Pennsylvania. In some locations, it has been necessary to build treatment plants to take waste volumes as low at 2,000 gallons per day and B.O.D. loads as low as 5 to 10 pounds per day. This may seem somewhat absurd to some people, but it may be necessary as part of a program leading to uniform law enforcement for small and large alike. From a technical point of view, many of these small plants do an excellent job of waste saving and might well be left alone since their wastes are oftentimes of more benefit than harm to the fish population. Milk is an excellent food both for human and aquatic life, and so long as the proper aerobic conditions are maintained in the stream at all times, milk solids are actually of benefit. An interesting series of articles by Pien (1) gives a wealth of data on aeration of milk waste under simulated stream conditions. The results indicate that, wherever sufficient dilution is available to reduce the B.O.D. to 20-30 p.p.m. in a fairly shallow stream, natural stream reaeration will always be able 32
Object Description
Purdue Identification Number | ETRIWC195305 |
Title | Recent developments in the design of small milk waste disposal plants |
Author |
Horton, J. P. Trebler, H. A. |
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. 32-45 |
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 32 |
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 | Recent Developments in the Design of Small Milk Waste Disposal Plants j. p. horton and h. a. trebler Assistant to the President of Laboratories and Head of Engineering Research National Dairy Research Laboratories, Inc. Oakdale, L. I., New York Unlike most other industries that have a serious waste disposal problem, the dairy industry is faced with the prospect of having to erect a large number of relatively small treatment plants for country milk receiving stations or small processing plants which are not on or near municipal sewerage systems. Because of their rural locations, the streams to which these plants discharge their wastes frequently are good fishing streams so that there is considerable pressure to eliminate pollution. Many country receiving stations, although presently increasing in size, are very small by most manufacturing standards, receiving only 30-60,000 pounds of milk per day and employing just two or three men. The magnitude of the waste disposal problem of each plant is also small by most waste treatment plant standards. Table I gives some examples of the waste volume from a few plants of our associated companies in Pennsylvania. In some locations, it has been necessary to build treatment plants to take waste volumes as low at 2,000 gallons per day and B.O.D. loads as low as 5 to 10 pounds per day. This may seem somewhat absurd to some people, but it may be necessary as part of a program leading to uniform law enforcement for small and large alike. From a technical point of view, many of these small plants do an excellent job of waste saving and might well be left alone since their wastes are oftentimes of more benefit than harm to the fish population. Milk is an excellent food both for human and aquatic life, and so long as the proper aerobic conditions are maintained in the stream at all times, milk solids are actually of benefit. An interesting series of articles by Pien (1) gives a wealth of data on aeration of milk waste under simulated stream conditions. The results indicate that, wherever sufficient dilution is available to reduce the B.O.D. to 20-30 p.p.m. in a fairly shallow stream, natural stream reaeration will always be able 32 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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