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Anaerobic Digestion of Rum Distillery Wastes WILLIAM C. HIATT, Engineer Watermation, Incorporated Cleveland, Ohio 44114 A.D. CARR, Professor and Head Chemical Engineering Department University of Cape Town Rondebosch Cape, South Africa JOHN F. ANDREWS, Professor and Head Environmental Systems Engineering Department Clemson University Clemson, South Carolina 29631 INTRODUCTION The production of rum in Puerto Rico is of major significance to the economy of the island. Inherent in rum production, however, is a very large output of pollutants. This waste stream, primarily the distillation residue, or slops, from the five operating distilleries on the Island has a waste equivalent of 77 percent of the island's population. The rum slops are characterized by low volatile solids, high BOD (30-60 gm/1) and COD (100-300 gm/1), a dark brown color, and a high temperature (near boiling). The slops have a high ionic strength, approximately that of sea water, and contain a high concentration of sulfate ions. An extensive research effort is being conducted by the Bacardi Corporation to determine the best method of waste treatment for rum slops. This work is partially financed by a demonstration grant from the United States Environmental Protection Agency. Earlier work at the Rum Pilot Plant, University of Puerto Rico (1), had indicated that this waste might be amenable to anaerobic digestion; however, this research also indicated that more extensive laboratory-scale work was required. In addition to the work at Bacardi, research on anaerobic digestion of rum waste has also been conducted at Clemson University and the University of Florida, among other institutions. In considering a full-scale treatment facility, little was known about the start-up and operational problems which might be encountered. Typical problems could be: the high ionic strength, high sulfate concentration, intermittent distillery operation, and variations in composition and concentration of the waste. A laboratory investigation, using rum slops supplied by the Bacardi Corporation, was therefore carried out with the following objectives in mind: 1) Establish that satisfactory pretreatment of this particular waste can be obtained, on a sustained basis, by anaerobic digestion; 2) Determine whether the slops are amenable to treatment at full strength or whether they must be diluted prior to treatment; 3) Establish preliminary hydraulic and organic loading parameters for use in subsequent pilot plant investigations; and 4) Investigate the special requirements for acclimitization of the microorganisms during the start-up period and study certain control actions, such as interruption or decrease of the feed rate, gas scrubbing to remove hydrogen sulfide, and neutralization of the feed. BACKGROUND The Production of Rum Rum is the end product of a complex manufacturing process, which includes biological 966
Object Description
Purdue Identification Number | ETRIWC197385 |
Title | Anaerobic digestion of rum distillery wastes |
Author |
Hiatt, William C. Carr, A. D. Andrews, John F. |
Date of Original | 1973 |
Conference Title | Proceedings of the 28th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,23197 |
Extent of Original | p. 966-976 |
Series | Engineering extension series no. 142 |
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 | 2009-06-24 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 966 |
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 | Anaerobic Digestion of Rum Distillery Wastes WILLIAM C. HIATT, Engineer Watermation, Incorporated Cleveland, Ohio 44114 A.D. CARR, Professor and Head Chemical Engineering Department University of Cape Town Rondebosch Cape, South Africa JOHN F. ANDREWS, Professor and Head Environmental Systems Engineering Department Clemson University Clemson, South Carolina 29631 INTRODUCTION The production of rum in Puerto Rico is of major significance to the economy of the island. Inherent in rum production, however, is a very large output of pollutants. This waste stream, primarily the distillation residue, or slops, from the five operating distilleries on the Island has a waste equivalent of 77 percent of the island's population. The rum slops are characterized by low volatile solids, high BOD (30-60 gm/1) and COD (100-300 gm/1), a dark brown color, and a high temperature (near boiling). The slops have a high ionic strength, approximately that of sea water, and contain a high concentration of sulfate ions. An extensive research effort is being conducted by the Bacardi Corporation to determine the best method of waste treatment for rum slops. This work is partially financed by a demonstration grant from the United States Environmental Protection Agency. Earlier work at the Rum Pilot Plant, University of Puerto Rico (1), had indicated that this waste might be amenable to anaerobic digestion; however, this research also indicated that more extensive laboratory-scale work was required. In addition to the work at Bacardi, research on anaerobic digestion of rum waste has also been conducted at Clemson University and the University of Florida, among other institutions. In considering a full-scale treatment facility, little was known about the start-up and operational problems which might be encountered. Typical problems could be: the high ionic strength, high sulfate concentration, intermittent distillery operation, and variations in composition and concentration of the waste. A laboratory investigation, using rum slops supplied by the Bacardi Corporation, was therefore carried out with the following objectives in mind: 1) Establish that satisfactory pretreatment of this particular waste can be obtained, on a sustained basis, by anaerobic digestion; 2) Determine whether the slops are amenable to treatment at full strength or whether they must be diluted prior to treatment; 3) Establish preliminary hydraulic and organic loading parameters for use in subsequent pilot plant investigations; and 4) Investigate the special requirements for acclimitization of the microorganisms during the start-up period and study certain control actions, such as interruption or decrease of the feed rate, gas scrubbing to remove hydrogen sulfide, and neutralization of the feed. BACKGROUND The Production of Rum Rum is the end product of a complex manufacturing process, which includes biological 966 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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