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66 FEASIBILITY OF PACKED-BED ANAEROBIC TREATMENT OF POULTRY PROCESSING WASTEWATER Stephen R. Harper, Research Engineer G. Edd Valentine, Research Scientist Charles C. Ross, Research Engineer Georgia Tech Research Institute Environmental, Health & Safety Division Engineering Technology Branch Atlanta, Georgia 30332 INTRODUCTION Almost 15% of the chicken consumed in the United States is produced in the State of Georgia (Table I). Nearly 700 million birds are processed in Georgia yearly, resulting in approximately 20 MGD of wastewater which requires treatment. Most of Georgia's poultry processors depend on dissolved air flotation (DAF) for primary or pretreatment of their wastewaters, followed by either discharge to a publicly-owned treatment works (POTW) or additional on-site biological treatment such as activated sludge or aerated lagoon as required for direct discharge or land treatment. DAF treatment is typically successful in meeting pretreatment objectives (i.e., to below POTW surcharge levels). However, the process is operationally intensive with large daily chemical requirements, and large quantities of sludge are produced as a byproduct. DAF sludges (skimmings) from many plants are currently transported to rendering facilities where they are processed with other inedible poultry parts (offal) into animal feed products. Processing DAF sludges is a problem for the rendering plants, since the sludge has a much higher water content than offal, resulting in additional expenses for transporting and processing. Moreover, the sludge goes rancid if stored more than one day, yielding an inferior rendered product. To help alleviate these costs and concerns, a number of poultry processors are investigating and installing expensive sludge dewatering facilities. High rate anaerobic treatment systems have been demonstrated to be successful in treating a variety of food-type wastes and were considered a logical alternative for handling poultry processing wastewater.2 The objective of this study was to determine whether the anaerobic process could be used to successfully meet or exceed POTW surcharge limits, without producing trouble-some quantities of sludge. Moreover, initial estimates indicated that daily operating costs could be much lower for anaerobic treatment than for DAF treatment. Despite the relatively dilute organic waste stream which Table I. Comparison of Poultry Production in the United States and Georgia! Georgia Poultry Production (1985) In Millions Total Bird Production 694 Pounds of Processed Chicken 2938 Revenue Produced (Dollars) 813 Wastewater Produced (Gallons) 4858 or 19 MGD3 United States Poultry Production (1985) Total Bird Production 4478 Pounds of Processed Chicken 18851 Revenue Produced (Dollars) 5680 Wastewater Produced (Gallons) 31346 or 120 MGD» aBased on 250 operating days/year. 657
Object Description
Purdue Identification Number | ETRIWC198766 |
Title | Feasibility of packed-bed anaerobic treatment of poultry processing wastewater |
Author |
Harper, Stephen R. Valentine, G. Edd Ross, Charles C. |
Date of Original | 1987 |
Conference Title | Proceedings of the 42nd Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,38818 |
Extent of Original | p. 657-672 |
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 | 2009-08-03 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 657 |
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 | 66 FEASIBILITY OF PACKED-BED ANAEROBIC TREATMENT OF POULTRY PROCESSING WASTEWATER Stephen R. Harper, Research Engineer G. Edd Valentine, Research Scientist Charles C. Ross, Research Engineer Georgia Tech Research Institute Environmental, Health & Safety Division Engineering Technology Branch Atlanta, Georgia 30332 INTRODUCTION Almost 15% of the chicken consumed in the United States is produced in the State of Georgia (Table I). Nearly 700 million birds are processed in Georgia yearly, resulting in approximately 20 MGD of wastewater which requires treatment. Most of Georgia's poultry processors depend on dissolved air flotation (DAF) for primary or pretreatment of their wastewaters, followed by either discharge to a publicly-owned treatment works (POTW) or additional on-site biological treatment such as activated sludge or aerated lagoon as required for direct discharge or land treatment. DAF treatment is typically successful in meeting pretreatment objectives (i.e., to below POTW surcharge levels). However, the process is operationally intensive with large daily chemical requirements, and large quantities of sludge are produced as a byproduct. DAF sludges (skimmings) from many plants are currently transported to rendering facilities where they are processed with other inedible poultry parts (offal) into animal feed products. Processing DAF sludges is a problem for the rendering plants, since the sludge has a much higher water content than offal, resulting in additional expenses for transporting and processing. Moreover, the sludge goes rancid if stored more than one day, yielding an inferior rendered product. To help alleviate these costs and concerns, a number of poultry processors are investigating and installing expensive sludge dewatering facilities. High rate anaerobic treatment systems have been demonstrated to be successful in treating a variety of food-type wastes and were considered a logical alternative for handling poultry processing wastewater.2 The objective of this study was to determine whether the anaerobic process could be used to successfully meet or exceed POTW surcharge limits, without producing trouble-some quantities of sludge. Moreover, initial estimates indicated that daily operating costs could be much lower for anaerobic treatment than for DAF treatment. Despite the relatively dilute organic waste stream which Table I. Comparison of Poultry Production in the United States and Georgia! Georgia Poultry Production (1985) In Millions Total Bird Production 694 Pounds of Processed Chicken 2938 Revenue Produced (Dollars) 813 Wastewater Produced (Gallons) 4858 or 19 MGD3 United States Poultry Production (1985) Total Bird Production 4478 Pounds of Processed Chicken 18851 Revenue Produced (Dollars) 5680 Wastewater Produced (Gallons) 31346 or 120 MGD» aBased on 250 operating days/year. 657 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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