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BOD Progression in Soluble Substrates -III- Short-Term BOD and Bio-Oxidation Solids Production A. W. BUSCH and N. MYRICK1 Assistant Professor and Research Associate, Respectively Department of Civil Engineering The Rice Institute Houston, Texas This paper is the third in a series reporting results obtained in an investi- tation of the biochemical degradation of organic compounds. The study was initiated on the postulation that there is no essential difference in the progression of bacterial growth over the broad range of environments encountered in industrial waste treatment and water pollution control. Thus there should be basic parameters relating the areas of pollution measurement, waste "strength," biological treatment, and receiving water self-purification. Investigators have generally approached these problems as separate entities. This paper presents theoretical and experimental evidence, supported by mathematical and biochemical formulations of the interrelation of these areas of study. It should be noted that the ultimate objective of this investigation is sufficient basic knowledge to permit formulation of an experimental procedure for a short-term BOD test broadly applicable to organic wastes of interest in water pollution control. THEORY The first paper(l) in this series presented experimental data in support of the postulated theory regarding BOD progression in soluble substrates. The theory states that the process of biological oxidation of soluble organic substrates involves (a) conversion of the food material into cell substance with varying degrees of synthesis, and (b) utilization of stored decomposition products and cell substance. In this process a plateau of oxygen utilization representing conversion of all substrate or bacterial cells occurs in from 12 to 48 hrs (depending on the analytical environment) and has a characteristic value for a specific substrate. This plateau should afford a much more valid point for determining total load or ultimate oxygen demand than does the conventional five-day incubation. It was also pointed out that the only difference between the BOD bottle and the activated sludge process is concentration and hence time. The second paper(2) reported an attempt to attain the ultimate BOD through respiration only, by blocking the assimilatory processes. This work served to verify the theory of BOD progression by producing plateau values representing a greater percentage of the ultimate BOD although an additional lag period was induced at critical concentrations of assimilation inhibitors. 1 Current address: Department of Civil Engineering, Washington University, St. Louis, Missouri. - 19 -
Object Description
Purdue Identification Number | ETRIWC196004 |
Title | BOD progression in soluble substrates. III. Short-term BOD and bio-oxidation solids production |
Author |
Busch, Arthur Winston, 1926- Myrick, H. Nugent |
Date of Original | 1960 |
Conference Title | Proceedings of the fifteenth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=7908&REC=6 |
Extent of Original | p. 19-27 |
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 | 2009-06-04 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page019 |
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 | BOD Progression in Soluble Substrates -III- Short-Term BOD and Bio-Oxidation Solids Production A. W. BUSCH and N. MYRICK1 Assistant Professor and Research Associate, Respectively Department of Civil Engineering The Rice Institute Houston, Texas This paper is the third in a series reporting results obtained in an investi- tation of the biochemical degradation of organic compounds. The study was initiated on the postulation that there is no essential difference in the progression of bacterial growth over the broad range of environments encountered in industrial waste treatment and water pollution control. Thus there should be basic parameters relating the areas of pollution measurement, waste "strength," biological treatment, and receiving water self-purification. Investigators have generally approached these problems as separate entities. This paper presents theoretical and experimental evidence, supported by mathematical and biochemical formulations of the interrelation of these areas of study. It should be noted that the ultimate objective of this investigation is sufficient basic knowledge to permit formulation of an experimental procedure for a short-term BOD test broadly applicable to organic wastes of interest in water pollution control. THEORY The first paper(l) in this series presented experimental data in support of the postulated theory regarding BOD progression in soluble substrates. The theory states that the process of biological oxidation of soluble organic substrates involves (a) conversion of the food material into cell substance with varying degrees of synthesis, and (b) utilization of stored decomposition products and cell substance. In this process a plateau of oxygen utilization representing conversion of all substrate or bacterial cells occurs in from 12 to 48 hrs (depending on the analytical environment) and has a characteristic value for a specific substrate. This plateau should afford a much more valid point for determining total load or ultimate oxygen demand than does the conventional five-day incubation. It was also pointed out that the only difference between the BOD bottle and the activated sludge process is concentration and hence time. The second paper(2) reported an attempt to attain the ultimate BOD through respiration only, by blocking the assimilatory processes. This work served to verify the theory of BOD progression by producing plateau values representing a greater percentage of the ultimate BOD although an additional lag period was induced at critical concentrations of assimilation inhibitors. 1 Current address: Department of Civil Engineering, Washington University, St. Louis, Missouri. - 19 - |
Resolution | 300 ppi |
Color Depth | 8 bit |
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