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Use of Sequencing Batch Reactors for Waste Treatment — CPC International, Corpus Christi, Texas ROBERT L. IRVINE, Engineer Quirk, Lawler, and Matusky, Engineers New York, New York WILLIAM B. DAVIS, Associate Professor Civil Engineering Department Texas A & M University Corpus Christi, Texas INTRODUCTION This paper represents a six month study of waste characterization and design criteria for effluent discharges from two widely different processes involved in the corn refining wet milling industry. Variations in manufacturing process operations create a variable waste volume and strength which critically influenced the design phase. The wastes associated with this design are those produced during the manufacture of modified or dry starches and in the wet milling process. The dry starch manufacturing process is a batch-wise operation which produces a wide variety of distinct products and wastes which have characteristics significantly different than those normally associated with waste treatment design. The starches are basically classified as hydroxyethylated, acid modified, phosphorylated, cationic and mill starches. The two basic wastes from the wet milling operation are from the feed and dextrose processes. These wastes are usually combined as a single waste stream which is fairly uniform in waste characteristics. Laboratory studies for design data had been obtained for the wet milling process at the CPC International plant at Pekin, Illinois. As a result major emphasis was given to the dry starch problem at Corpus Christi. Nevertheless studies were carried out on the wet milling waste to verify the similarity of the wet milling wastes from both the Pekin and Corpus Christi plants. LABORATORY STUDIES The total laboratory effort involved the following: 1. Acclimation procedures 2. Hydraulic selection of organism in continuous flow reactors 3. Batch studies to determine reaction rates, cell yield and oxygen requirements 450
Object Description
Purdue Identification Number | ETRIWC197140 |
Title | Use of sequencing batch reactors for waste treatment : CPC International, Corpus Christi, Texas |
Author |
Irvine, Robert L. Davis, W. B. (William B.) |
Date of Original | 1971 |
Conference Title | Proceedings of the 26th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,19214 |
Extent of Original | p. 450-462 |
Series | Engineering extension series no. 140 |
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 | 2009-06-25 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 450 |
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 | Use of Sequencing Batch Reactors for Waste Treatment — CPC International, Corpus Christi, Texas ROBERT L. IRVINE, Engineer Quirk, Lawler, and Matusky, Engineers New York, New York WILLIAM B. DAVIS, Associate Professor Civil Engineering Department Texas A & M University Corpus Christi, Texas INTRODUCTION This paper represents a six month study of waste characterization and design criteria for effluent discharges from two widely different processes involved in the corn refining wet milling industry. Variations in manufacturing process operations create a variable waste volume and strength which critically influenced the design phase. The wastes associated with this design are those produced during the manufacture of modified or dry starches and in the wet milling process. The dry starch manufacturing process is a batch-wise operation which produces a wide variety of distinct products and wastes which have characteristics significantly different than those normally associated with waste treatment design. The starches are basically classified as hydroxyethylated, acid modified, phosphorylated, cationic and mill starches. The two basic wastes from the wet milling operation are from the feed and dextrose processes. These wastes are usually combined as a single waste stream which is fairly uniform in waste characteristics. Laboratory studies for design data had been obtained for the wet milling process at the CPC International plant at Pekin, Illinois. As a result major emphasis was given to the dry starch problem at Corpus Christi. Nevertheless studies were carried out on the wet milling waste to verify the similarity of the wet milling wastes from both the Pekin and Corpus Christi plants. LABORATORY STUDIES The total laboratory effort involved the following: 1. Acclimation procedures 2. Hydraulic selection of organism in continuous flow reactors 3. Batch studies to determine reaction rates, cell yield and oxygen requirements 450 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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