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A Statistical Study of Five Years Operation of the West Virginia Pulp and Paper Company's Waste Treatment Plant OLIVER B. BURNS, Jr., Pollution Abatement Supervisor West Virginia Pulp and Paper Covington, Virginia W. WESLEY ECKENFELDER, Jr., President Hydroscience, Inc. Englewood Cliffs, New Jersey INTRODUCTION The Bleached Board Division ofthe West Virginia Pulp and Paper Company is headquartered in Covington, Virginia. The Covington Mill produces primarily high quality bleached board from kraft pulp and corrugating medium from neutral sulfite semi-chemical pulp. The total paper and board production is about 1, 000 T/D. An integral part of a concentrated effort to improve stream conditions below the mill led to the construction of an activated sludge waste treatment plant in 1955, only after pollution reduction at the source had reached the point of diminishing returns. As operating experience with the plant was gained and improvements added, it was possible to treat greater portions ofthe mill waste. Figure 1 illustrates the increasing BOD loadings the plant has accepted since startup and also demonstrates the ability of the system to effectively treat the wastes. The original plant consisted of one 100 ft diameter primary clarifier for the sedimentation of wastes with high suspended solids content ana activated sludge treatment for the settled wastes and a major portion of the low solids Bleach Plant flow which entered the secondary system directly. The paper machine wastes, some of the Bleach Plant flow, and a few miscellaneous wastes did not receive treatment initially. In 1959, in order to increase the plant's capacity and efficiency, diffused air aeration units were replaced by dual rotor turbine aerators and a second 100 ft diameter primary clarifier and an equalization tank were added to the facilities. Immediately after the expansion, additional wastes from the paper machines and more miscellaneous flows were accepted for treatment. All wastes were then mixed in the new equalization tank and the total flow equally split be - tween the two primary clarifiers. BOD REMOVAL The removal of BOD from simple substrate has been observed to exhibit zero or first order kinetics at low concentrations of BOD. In complex wastes such as those from pulp and paper mills, however, the constituents are subject to varying reaction rates. This results in a decreasing overall rate of removal of the various components. The overall rate of BOD removal can, therefore, be defined by a retardant type reaction. This form of equation was employed to define BOD reduction through the aeration tanks. The plot to determine the rate coefficients for numerous runs in which samples were withdrawn at the end of each day in the - 83 -
Object Description
Purdue Identification Number | ETRIWC196309 |
Title | Statistical study of five years operation of the West Virginia Pulp and Paper Company's waste treatment plant |
Author |
Burns, O. B. (Oliver B.) Eckenfelder, W. Wesley (William Wesley), 1926- |
Date of Original | 1963 |
Conference Title | Proceedings of the eighteenth Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=10285&REC=5 |
Extent of Original | p. 83-94 |
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 | 2009-05-18 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 83 |
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 | A Statistical Study of Five Years Operation of the West Virginia Pulp and Paper Company's Waste Treatment Plant OLIVER B. BURNS, Jr., Pollution Abatement Supervisor West Virginia Pulp and Paper Covington, Virginia W. WESLEY ECKENFELDER, Jr., President Hydroscience, Inc. Englewood Cliffs, New Jersey INTRODUCTION The Bleached Board Division ofthe West Virginia Pulp and Paper Company is headquartered in Covington, Virginia. The Covington Mill produces primarily high quality bleached board from kraft pulp and corrugating medium from neutral sulfite semi-chemical pulp. The total paper and board production is about 1, 000 T/D. An integral part of a concentrated effort to improve stream conditions below the mill led to the construction of an activated sludge waste treatment plant in 1955, only after pollution reduction at the source had reached the point of diminishing returns. As operating experience with the plant was gained and improvements added, it was possible to treat greater portions ofthe mill waste. Figure 1 illustrates the increasing BOD loadings the plant has accepted since startup and also demonstrates the ability of the system to effectively treat the wastes. The original plant consisted of one 100 ft diameter primary clarifier for the sedimentation of wastes with high suspended solids content ana activated sludge treatment for the settled wastes and a major portion of the low solids Bleach Plant flow which entered the secondary system directly. The paper machine wastes, some of the Bleach Plant flow, and a few miscellaneous wastes did not receive treatment initially. In 1959, in order to increase the plant's capacity and efficiency, diffused air aeration units were replaced by dual rotor turbine aerators and a second 100 ft diameter primary clarifier and an equalization tank were added to the facilities. Immediately after the expansion, additional wastes from the paper machines and more miscellaneous flows were accepted for treatment. All wastes were then mixed in the new equalization tank and the total flow equally split be - tween the two primary clarifiers. BOD REMOVAL The removal of BOD from simple substrate has been observed to exhibit zero or first order kinetics at low concentrations of BOD. In complex wastes such as those from pulp and paper mills, however, the constituents are subject to varying reaction rates. This results in a decreasing overall rate of removal of the various components. The overall rate of BOD removal can, therefore, be defined by a retardant type reaction. This form of equation was employed to define BOD reduction through the aeration tanks. The plot to determine the rate coefficients for numerous runs in which samples were withdrawn at the end of each day in the - 83 - |
Resolution | 300 ppi |
Color Depth | 8 bit |
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