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TREATABILITY AND FUNCTIONAL DESIGN OF A PHYSICAL-CHEMICAL WASTEWATER TREATMENT SYSTEM FOR A PRINTING AND PHOTODEVELOPING PLANT Paul A. Luther, Senior Environmental Engineer David C. Kennedy, Senior Associate Edward Edgerley, Jr., President Ryckman/Edgerley/Tomlinson & Associates, Inc. 12161 Lackland Road St. Louis, Missouri 63141 INTRODUCTION A complex industrial waste requires in-depth studies to assure that treatability is accomplished in such a manner that the ultimate design is efficient, technologically correct, economically feasible, and that the effluent is acceptable by current effluent limitation guidelines. Challenges of this nature are faced by the printing and photodeveloping industry with respect to the discharge of its process wastewater. The consulting firm of Ryckman/Edgerley/Tomlinson & Associates, Inc. (RETA), was engaged to study a problem for one of the country's largest printing and photodeveloping facilities, located in Illinois, and to develop a treatment system to meet these needs. This chapter presents the field sampling, wastewater characterization, treatability studies (both successful and unsuccessful) and the final bench-scale studies that were undertaken. From these studies, a functional design and estimated cost of treatment were developed. PROBLEM DEFINITION Recently established water quality objectives call for industries to install the "best practicable" wastewater treatment by 1977 and the "best available" treatment by 1983. To meet these deadlines, the Illinois EPA has enforced the Water Pollution Regulations of Illinois, adopted by the Illinois Pollution Control Board on March 7, 1972. With much of Illinois void of large internal bodies of water, these regulations are based on water quality limited discharge and are among the most stringent in the nation. This large printing and photodeveloping plant operates three 8-hr shifts/day with a 7-day work week. Because of the diverse capabilities of the plant, there are several sub- processes that generate wastewater of distinctly different characteristics. Due to the nature and complexity of the wastewater, standard wastewater treatment schemes would be expected to be generally ineffective. Complex organic molecules coupled with various types and quantities of heavy metals that are present in the wastewater would be expected to pass through conventional treatment processes untouched, or result in such high operating costs that economics would become a limiting factor. Currently, the plant is discharging its 16,560 gpd of wastewater into two storage lagoons. These lagoons were approaching their volumetric capacity when the printing company was directed by the state regulatory agency to investigate possible means for treating the waste. The printing company's first approach to the problem was to test a portable wastewater treatment system on the wastewater. The portable system consisted of biological treatment, sand filtration and chlorination. Table I shows the results of using this system to treat the wastewater. After treatment, four parameters (BODs, fluoride, iron and silver) all exceed Illinois stream standards. A second problem associated with the portable treatment unit was the estimated $285,000 cost of scaling the unit up to a size capable of treating the entire wastewater flow. This investment was considered to be prohibitive. 876
Object Description
Purdue Identification Number | ETRIWC197679 |
Title | Treatability and functional design of a physical-chemical wastewater treatment system for a printing and photodeveloping plant |
Author |
Luther, Paul A. Kennedy, David C. Edgerley, Edward |
Date of Original | 1976 |
Conference Title | Proceedings of the 31st Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,27048 |
Extent of Original | p. 876-884 |
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 | 2009-07-08 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 876 |
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 | TREATABILITY AND FUNCTIONAL DESIGN OF A PHYSICAL-CHEMICAL WASTEWATER TREATMENT SYSTEM FOR A PRINTING AND PHOTODEVELOPING PLANT Paul A. Luther, Senior Environmental Engineer David C. Kennedy, Senior Associate Edward Edgerley, Jr., President Ryckman/Edgerley/Tomlinson & Associates, Inc. 12161 Lackland Road St. Louis, Missouri 63141 INTRODUCTION A complex industrial waste requires in-depth studies to assure that treatability is accomplished in such a manner that the ultimate design is efficient, technologically correct, economically feasible, and that the effluent is acceptable by current effluent limitation guidelines. Challenges of this nature are faced by the printing and photodeveloping industry with respect to the discharge of its process wastewater. The consulting firm of Ryckman/Edgerley/Tomlinson & Associates, Inc. (RETA), was engaged to study a problem for one of the country's largest printing and photodeveloping facilities, located in Illinois, and to develop a treatment system to meet these needs. This chapter presents the field sampling, wastewater characterization, treatability studies (both successful and unsuccessful) and the final bench-scale studies that were undertaken. From these studies, a functional design and estimated cost of treatment were developed. PROBLEM DEFINITION Recently established water quality objectives call for industries to install the "best practicable" wastewater treatment by 1977 and the "best available" treatment by 1983. To meet these deadlines, the Illinois EPA has enforced the Water Pollution Regulations of Illinois, adopted by the Illinois Pollution Control Board on March 7, 1972. With much of Illinois void of large internal bodies of water, these regulations are based on water quality limited discharge and are among the most stringent in the nation. This large printing and photodeveloping plant operates three 8-hr shifts/day with a 7-day work week. Because of the diverse capabilities of the plant, there are several sub- processes that generate wastewater of distinctly different characteristics. Due to the nature and complexity of the wastewater, standard wastewater treatment schemes would be expected to be generally ineffective. Complex organic molecules coupled with various types and quantities of heavy metals that are present in the wastewater would be expected to pass through conventional treatment processes untouched, or result in such high operating costs that economics would become a limiting factor. Currently, the plant is discharging its 16,560 gpd of wastewater into two storage lagoons. These lagoons were approaching their volumetric capacity when the printing company was directed by the state regulatory agency to investigate possible means for treating the waste. The printing company's first approach to the problem was to test a portable wastewater treatment system on the wastewater. The portable system consisted of biological treatment, sand filtration and chlorination. Table I shows the results of using this system to treat the wastewater. After treatment, four parameters (BODs, fluoride, iron and silver) all exceed Illinois stream standards. A second problem associated with the portable treatment unit was the estimated $285,000 cost of scaling the unit up to a size capable of treating the entire wastewater flow. This investment was considered to be prohibitive. 876 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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