page 579 |
Previous | 1 of 24 | Next |
|
|
Loading content ...
EFFECT OF CARBONATE ION ON PRECIPITATION TREATMENT OF CADMIUM, COPPER, LEAD AND ZINC James W. Patterson, Professor Pritzker Department of Environmental Engineering Illinois Institute of Technology Chicago, Illinois 60616 Considerable effort is being expended to control heavy metals discharges to the nation's waters. Metals sources include treated and untreated municipal and industrial waste effluents, and geological sources. The quality and quantity of metal-bearing industrial effluents depend upon their industrial source and the degree of treatment imposed. Table I illustrates example sources and concentration ranges of several heavy metals in industrial wastewaters. Under the authority of the Clean Water Act of 1977, the U.S. Environmental Protection Agency has recently promulgated or proposed a number of BATEA and Pretreatment effluent limitations guidelines to be met by industry. An evaluation of these guidelines indicates that, for like pollutants, there are major differences in the effluent quality required for different categories of industrial dischargers [2]. Table II presents example BATEA effluent limitations guidelines for the four metals discussed in this article, on an equivalent concentration basis. The range of BATEA guidelines for cadmium is near 4-fold, for copper 200-fold, for lead 28-fold, and for zinc 30-fold. Similar guidelines variability is observed among subcategories within industrial categories, such as inorganic chemicals or iron and steel. Effluent limitations guidelines are normally derived from performance data obtained from field monitoring of highly efficient industrial wastewater treatment plants. Differences in limitation guidelines between industrial categories or subcategories are usually explained as resulting from variations in category or subcategory wastewater characteristics, and the Table I. Range of Heavy Metals Concentrations in Wastewater [ 1 ] Metal Typical Industrial Sources Concentration Range Reported (mg/1) Cadmium Electroplating, metallurgical alloying, ceramics 0-5,000 Copper Copper wire mills, metal process pickling baths, plating Storage battery industry, printing, paint, explosive materials, pigment manufacture, plating Nickel Metal processing industries, plating Zinc Zinc smelting, steel works with galvanizing lines, plating 0-800 0-843 0-900 0-48,000 579
Object Description
Purdue Identification Number | ETRIWC198163 |
Title | Effect of carbonate ion of precipitation treatment of cadmium, copper, lead and zinc |
Author | Patterson, James William, 1940- |
Date of Original | 1981 |
Conference Title | Proceedings of the 36th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,32118 |
Extent of Original | p. 579-602 |
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 | 2009-07-07 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 579 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | EFFECT OF CARBONATE ION ON PRECIPITATION TREATMENT OF CADMIUM, COPPER, LEAD AND ZINC James W. Patterson, Professor Pritzker Department of Environmental Engineering Illinois Institute of Technology Chicago, Illinois 60616 Considerable effort is being expended to control heavy metals discharges to the nation's waters. Metals sources include treated and untreated municipal and industrial waste effluents, and geological sources. The quality and quantity of metal-bearing industrial effluents depend upon their industrial source and the degree of treatment imposed. Table I illustrates example sources and concentration ranges of several heavy metals in industrial wastewaters. Under the authority of the Clean Water Act of 1977, the U.S. Environmental Protection Agency has recently promulgated or proposed a number of BATEA and Pretreatment effluent limitations guidelines to be met by industry. An evaluation of these guidelines indicates that, for like pollutants, there are major differences in the effluent quality required for different categories of industrial dischargers [2]. Table II presents example BATEA effluent limitations guidelines for the four metals discussed in this article, on an equivalent concentration basis. The range of BATEA guidelines for cadmium is near 4-fold, for copper 200-fold, for lead 28-fold, and for zinc 30-fold. Similar guidelines variability is observed among subcategories within industrial categories, such as inorganic chemicals or iron and steel. Effluent limitations guidelines are normally derived from performance data obtained from field monitoring of highly efficient industrial wastewater treatment plants. Differences in limitation guidelines between industrial categories or subcategories are usually explained as resulting from variations in category or subcategory wastewater characteristics, and the Table I. Range of Heavy Metals Concentrations in Wastewater [ 1 ] Metal Typical Industrial Sources Concentration Range Reported (mg/1) Cadmium Electroplating, metallurgical alloying, ceramics 0-5,000 Copper Copper wire mills, metal process pickling baths, plating Storage battery industry, printing, paint, explosive materials, pigment manufacture, plating Nickel Metal processing industries, plating Zinc Zinc smelting, steel works with galvanizing lines, plating 0-800 0-843 0-900 0-48,000 579 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Tags
Comments
Post a Comment for page 579