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The Application of Oxidation- Reduction Potential to Biological Waste Treatment Process Control W. WESLEY ECKENFELDER, JR. President, Eckenfelder Associates, Inc. Ridgewood, New Jersey JOHN W. HOOD Superintendent of Sewage Treatment . Ridgewood, New Jersey This paper represents a report of progress on the investigation of analytical and control methods to the design and operation of industrial waste treatment processes, particularly as they relate themselves to biological treatment. Effective process control should be based upon analytical methods which are related to the functional operation of the process and which are simple to perform. In many waste treatment processes, the O-R Potential may be readily employed as a means of process control to attain the maximum process efficiency. Considerable work has been done on the application of the O-R Potential to sewage treatment process control.3 This work is an extension of these investi¬ gations to the application of the O-R Potential to waste treatment process control. In many cases, O-R Potential studies may suggest new approaches to problems of biological oxidation and reduction in process operation and provide a basis for further research. The O-R Potential represents the electrical pressure existing in a liquid as a result of the respective concentrations of oxidant and reductant present in a substrate. The O-R Potential relationship in industrial waste treatment is shown in Figure 1. In this respect O-R Potential is essentially an intensity factor and has been analogously compared to temperature by several investigators.7 Oxidation may be defined as a substance taking up negative charges. The potential difference is determined by the ratio of oxidant to reductant and the hydrogen ion concentration. While it is not a quantitative measure of these compounds, it may be assumed to be the relative proportions in which they exist. The conditions affecting the potential of a biological medium and the rate of change of potential are: (a) the kind of organism 221
Object Description
Purdue Identification Number | ETRIWC195125 |
Title | Application of oxidation-reduction potential to biological waste treatment process control |
Author |
Eckenfelder, W. Wesley (William Wesley), 1926- Hood, John W. |
Date of Original | 1951 |
Conference Title | Proceedings of the Sixth Industrial Waste Utilization Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext, 106 |
Extent of Original | p. 221-238 |
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 | ScandAll21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 221 |
Date of Original | 1951 |
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 | ScandAll21 |
Transcript | The Application of Oxidation- Reduction Potential to Biological Waste Treatment Process Control W. WESLEY ECKENFELDER, JR. President, Eckenfelder Associates, Inc. Ridgewood, New Jersey JOHN W. HOOD Superintendent of Sewage Treatment . Ridgewood, New Jersey This paper represents a report of progress on the investigation of analytical and control methods to the design and operation of industrial waste treatment processes, particularly as they relate themselves to biological treatment. Effective process control should be based upon analytical methods which are related to the functional operation of the process and which are simple to perform. In many waste treatment processes, the O-R Potential may be readily employed as a means of process control to attain the maximum process efficiency. Considerable work has been done on the application of the O-R Potential to sewage treatment process control.3 This work is an extension of these investi¬ gations to the application of the O-R Potential to waste treatment process control. In many cases, O-R Potential studies may suggest new approaches to problems of biological oxidation and reduction in process operation and provide a basis for further research. The O-R Potential represents the electrical pressure existing in a liquid as a result of the respective concentrations of oxidant and reductant present in a substrate. The O-R Potential relationship in industrial waste treatment is shown in Figure 1. In this respect O-R Potential is essentially an intensity factor and has been analogously compared to temperature by several investigators.7 Oxidation may be defined as a substance taking up negative charges. The potential difference is determined by the ratio of oxidant to reductant and the hydrogen ion concentration. While it is not a quantitative measure of these compounds, it may be assumed to be the relative proportions in which they exist. The conditions affecting the potential of a biological medium and the rate of change of potential are: (a) the kind of organism 221 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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