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Section 5. PAINT AND INK WASTES BIOLOGICAL TREATMENT OF PAINT INDUSTRY WASTEWATER WITH ACTIVATED CARBON Yeun C. Wu, Associate Professor Zahid Mahmud, Teaching Fellow Department of Civil Engineering University of Pittsburgh Pittsburgh, Pennsylvania 15261 INTRODUCTION It has increasingly become difficult for the paint industry to treat its wastes to the acceptable levels without excessive costs. Most of the constituents of paint wastewater have been classified by EPA to be hazardous. Use of activated carbon for advanced treatment of municipal and industrial wastewaters has developed rapidly in the last ten years. The 1972 Clean Water Act [ 1] Sec. 311 restricts the discharge of 65 toxic pollutants (which were in turn subdivided into 299 substances), and adoption of best available technology (BAT) by 1983. All the new NPDES (National Pollutant Discharge Elimination System) permits strictly observe it. Penalties have been revised and published on August 29, 1979 (40 CFR, pt. 117, 44 Fed. Reg. 50766). The responsible person is required under Sec. 311(b)(5) to notify the appropriate federal agency as soon as he had knowledge of any discharge of a hazardous substance in a reportable quantity. The 1972 Clean Water Act, with 1977 amendments, require each discharger to install additional control equipment by 1983 representing the BAT. Sec. 306 restricts the new source performance standards (NSPS) specifying that all new NPDES permits should require the greatest degree of effluent reduction available through use of the best available demonstrated control technology (BADCT). Combined activated carbon-biological process is a strong candidate to be a most effective means of 1983 best available treatment economically achievable (BATEA) limitations. This is for every "new source" but not for every "new plant." One of the most recently developed modification of the biological process is the addition of powdered or granular activated carbon to the activated sludge reactor. The carbon addition process is particularly well suited to wastewaters containing adsorbable, toxic and poorly biodegradable organics, as research [2-6] with wastes from organic chemical manufacturing, petroleum refining and textile manufacturing has shown. The present study primarily planned to investigate the feasibility of using sludge together with activated carbon for treatment of paint industrial wastewater. A great amount of applied research has been carried out on the various aspects of carbon adsorption. However, very little research has been done concerning the basic aspects of adsorption of paint wastes. The ability to predict the behavior of the biological reactor in conjunction with activated carbon is void, not only for the paint industry, but for industry as a whole. This research attempts to partially fill this void by providing an investigation into the response of the biomass subjected under various process operating conditions for the paint industry wastewater. PROCESS KINETICS Activated Sludge Process Activated sludge is used to convert finely divided and dissolved organic matter in wastewater into flocculant settleable solids that can be removed in sedimentation tank. The 200
Object Description
Purdue Identification Number | ETRIWC198021 |
Title | Biological treatment of paint industry wastewater with activated carbon |
Author |
Wu, Yeun C. Mahmud, Zahid |
Date of Original | 1980 |
Conference Title | Proceedings of the 35th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,31542 |
Extent of Original | p. 200-210 |
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 | 2009-10-22 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 200 |
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 | Section 5. PAINT AND INK WASTES BIOLOGICAL TREATMENT OF PAINT INDUSTRY WASTEWATER WITH ACTIVATED CARBON Yeun C. Wu, Associate Professor Zahid Mahmud, Teaching Fellow Department of Civil Engineering University of Pittsburgh Pittsburgh, Pennsylvania 15261 INTRODUCTION It has increasingly become difficult for the paint industry to treat its wastes to the acceptable levels without excessive costs. Most of the constituents of paint wastewater have been classified by EPA to be hazardous. Use of activated carbon for advanced treatment of municipal and industrial wastewaters has developed rapidly in the last ten years. The 1972 Clean Water Act [ 1] Sec. 311 restricts the discharge of 65 toxic pollutants (which were in turn subdivided into 299 substances), and adoption of best available technology (BAT) by 1983. All the new NPDES (National Pollutant Discharge Elimination System) permits strictly observe it. Penalties have been revised and published on August 29, 1979 (40 CFR, pt. 117, 44 Fed. Reg. 50766). The responsible person is required under Sec. 311(b)(5) to notify the appropriate federal agency as soon as he had knowledge of any discharge of a hazardous substance in a reportable quantity. The 1972 Clean Water Act, with 1977 amendments, require each discharger to install additional control equipment by 1983 representing the BAT. Sec. 306 restricts the new source performance standards (NSPS) specifying that all new NPDES permits should require the greatest degree of effluent reduction available through use of the best available demonstrated control technology (BADCT). Combined activated carbon-biological process is a strong candidate to be a most effective means of 1983 best available treatment economically achievable (BATEA) limitations. This is for every "new source" but not for every "new plant." One of the most recently developed modification of the biological process is the addition of powdered or granular activated carbon to the activated sludge reactor. The carbon addition process is particularly well suited to wastewaters containing adsorbable, toxic and poorly biodegradable organics, as research [2-6] with wastes from organic chemical manufacturing, petroleum refining and textile manufacturing has shown. The present study primarily planned to investigate the feasibility of using sludge together with activated carbon for treatment of paint industrial wastewater. A great amount of applied research has been carried out on the various aspects of carbon adsorption. However, very little research has been done concerning the basic aspects of adsorption of paint wastes. The ability to predict the behavior of the biological reactor in conjunction with activated carbon is void, not only for the paint industry, but for industry as a whole. This research attempts to partially fill this void by providing an investigation into the response of the biomass subjected under various process operating conditions for the paint industry wastewater. PROCESS KINETICS Activated Sludge Process Activated sludge is used to convert finely divided and dissolved organic matter in wastewater into flocculant settleable solids that can be removed in sedimentation tank. The 200 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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