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Pilot Investigation of Starch-Gluten Waste Treatment JOSEPH T. LING, Senior Sanitary Engineer Minnesota Mining and Manufacturing Company St. Paul, Minnesota Construction of a new starch and gluten plant was planned several miles outside of a small city along a large river. There was no municipal sewer in that area and the industry was requested to provide its own waste treatment to meet the local requirements. The state health officials required a 35 per cent reduction of the BOD in the waste before discharging into the receiving stream. The state health officials further stipulated that treatment for removal of BOD up to 85 per cent may be required if adverse conditions in the receiving stream develop. The city water intake was located several miles downstream from the plant site. It was understood that under no circumstances would the quality of the raw water for the city water supply be impaired directly or indirectly as a result of the discharge of the waste plant effluent to the receiving stream. Since this plant was one of the first of its kind in this country, not much information could be found in published literature concerning the successful methods of disposal of the liquid wastes. The management finally decided that some experiments should be undertaken to explore suitable methods of treating this particular type of waste water. The general course leading to this goal normally involves process control, experiments, stream analysis, design, and operation. Only the experimental phase is reported in this paper. This also illustrates how industries approach their pollution abatement problem through investigation and research. CHARACTERISTICS OF WASTE The liquid waste from this manufacturing process can be separated into three sources, namely, tailing stream, sieve waste and equipment and floor cleaning. Insofar as the concentration and deoxygenation effects on the receiving waters are concerned, the tailing stream is the principal source of BOD. The characteristics of the tailing stream are presented as follows: Five-day BOD 12, 000 ppm Total solids 15, 000 ppm Total suspended solids 800 ppm Total volatile solids 14, 000 ppm Total carbon 5, 900 ppm Total nitrogen 420 ppm Total phosphorous 123 ppm Temperature 80-90 F pH 4.5-5 Of the total solids content, about 14 per cent is protein, 7 per cent is starch and 79 per cent is carbohydrate. Of the carbohydrates, about 62 per cent is reducing sugar. The tailing stream is quite constant in quantity and represents about - 217 -
Object Description
Purdue Identification Number | ETRIWC196122 |
Title | Pilot investigation of starch-gluten waste treatment |
Author | Ling, Joseph T. |
Date of Original | 1961 |
Conference Title | Proceedings of the sixteenth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=7917&REC=15 |
Extent of Original | p. 217-231 |
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 217 |
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 | Pilot Investigation of Starch-Gluten Waste Treatment JOSEPH T. LING, Senior Sanitary Engineer Minnesota Mining and Manufacturing Company St. Paul, Minnesota Construction of a new starch and gluten plant was planned several miles outside of a small city along a large river. There was no municipal sewer in that area and the industry was requested to provide its own waste treatment to meet the local requirements. The state health officials required a 35 per cent reduction of the BOD in the waste before discharging into the receiving stream. The state health officials further stipulated that treatment for removal of BOD up to 85 per cent may be required if adverse conditions in the receiving stream develop. The city water intake was located several miles downstream from the plant site. It was understood that under no circumstances would the quality of the raw water for the city water supply be impaired directly or indirectly as a result of the discharge of the waste plant effluent to the receiving stream. Since this plant was one of the first of its kind in this country, not much information could be found in published literature concerning the successful methods of disposal of the liquid wastes. The management finally decided that some experiments should be undertaken to explore suitable methods of treating this particular type of waste water. The general course leading to this goal normally involves process control, experiments, stream analysis, design, and operation. Only the experimental phase is reported in this paper. This also illustrates how industries approach their pollution abatement problem through investigation and research. CHARACTERISTICS OF WASTE The liquid waste from this manufacturing process can be separated into three sources, namely, tailing stream, sieve waste and equipment and floor cleaning. Insofar as the concentration and deoxygenation effects on the receiving waters are concerned, the tailing stream is the principal source of BOD. The characteristics of the tailing stream are presented as follows: Five-day BOD 12, 000 ppm Total solids 15, 000 ppm Total suspended solids 800 ppm Total volatile solids 14, 000 ppm Total carbon 5, 900 ppm Total nitrogen 420 ppm Total phosphorous 123 ppm Temperature 80-90 F pH 4.5-5 Of the total solids content, about 14 per cent is protein, 7 per cent is starch and 79 per cent is carbohydrate. Of the carbohydrates, about 62 per cent is reducing sugar. The tailing stream is quite constant in quantity and represents about - 217 - |
Resolution | 300 ppi |
Color Depth | 8 bit |
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