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Recovery of Undissolved Solids From Rubber Plant Wastewater STANFORD E. GROVES, Director of Engineering Copolymer Rubber and Chemical Corporation Baton Rouge, Louisiana 70821 HANS E. LUNDGREN, Marketing Specialist The Permutit Company Paramus, New Jersey 07652 INTRODUCTION The Copolymer rubber and latex plant in Baton Rouge, Louisiana is one of a number of nearly identical rubber plants in this country built by the Government during World War II to provide an uninterrupted supply of synthetic rubber as the natural supply diminished. Today the plant produces about 1 million pounds per day of finished rubber products, 97 percent of which are of the SBR (Styrene Butadiene) type, the rest being of the nitrile type. Only a fraction of the production is sold in the basic latex form. Four of the five production lines at Copolymer produce black master batch which contains extenders such as carbon black and oil while the fifth line produces unpigmented rubber. The plant makes its own butadiene and purchases the other raw materials. The waste stream from this operation amounted to about 5 mgd and a total of about 6 million pounds of suspended materials such as carbon black, oil latex and rubber were discharged yearly into the Monto Sano Bauou, a tributary of the Mississippi River. Four years ago when interest in ecology was first indicated, the plant management responded by initiating a program of recovering materials right at the source of discharge in order to minimize the solids losses. It soon became apparent that the equipment installed for that purpose, a styrene butadiene and oil recovery system, screens and hydrocyclones accomplished their purpose but did not bring Copolymer's effluent into compliance with EPA standards. Again without external pressure but in close cooperation with the Louisiana Stream Control Commission, the plant initiated its phase II program focusing on a primary effluent treatment/ recovery system. Although effluent discharge standards had not been set at that time, Copolymer elected to proceed on its own, primarily to keep one step ahead of the regulatory agencies thus having the option of evaluating and selecting the most efficient and economical system for the particular conditions at Baton Rouge. A literature search indicated a dearth of information on latex waste treatment and a subsequent evaluation of common waste treatment processes quickly eliminated: 1) the filtration process because of the extreme expenses; 2) the sedimentation process because of the wide specific gravity range of the waste solids (0.6 to 2.0); and 3) others, such as the centrifugation and microscreening, because of the sheer volume to be processed. The dissolved air flotation process (DAF) was finally selected for further investigation because of its already proven ability to remove both light and heavy materials and also because of promising initial flotation bench scale tests. 99
Object Description
Purdue Identification Number | ETRIWC197310 |
Title | Recovery of undissolved solids from rubber plant wastewater |
Author |
Groves, Stanford E. Lundgren, Hans E. |
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. 99-104 |
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 | 2009-06-02 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 99 |
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 | Recovery of Undissolved Solids From Rubber Plant Wastewater STANFORD E. GROVES, Director of Engineering Copolymer Rubber and Chemical Corporation Baton Rouge, Louisiana 70821 HANS E. LUNDGREN, Marketing Specialist The Permutit Company Paramus, New Jersey 07652 INTRODUCTION The Copolymer rubber and latex plant in Baton Rouge, Louisiana is one of a number of nearly identical rubber plants in this country built by the Government during World War II to provide an uninterrupted supply of synthetic rubber as the natural supply diminished. Today the plant produces about 1 million pounds per day of finished rubber products, 97 percent of which are of the SBR (Styrene Butadiene) type, the rest being of the nitrile type. Only a fraction of the production is sold in the basic latex form. Four of the five production lines at Copolymer produce black master batch which contains extenders such as carbon black and oil while the fifth line produces unpigmented rubber. The plant makes its own butadiene and purchases the other raw materials. The waste stream from this operation amounted to about 5 mgd and a total of about 6 million pounds of suspended materials such as carbon black, oil latex and rubber were discharged yearly into the Monto Sano Bauou, a tributary of the Mississippi River. Four years ago when interest in ecology was first indicated, the plant management responded by initiating a program of recovering materials right at the source of discharge in order to minimize the solids losses. It soon became apparent that the equipment installed for that purpose, a styrene butadiene and oil recovery system, screens and hydrocyclones accomplished their purpose but did not bring Copolymer's effluent into compliance with EPA standards. Again without external pressure but in close cooperation with the Louisiana Stream Control Commission, the plant initiated its phase II program focusing on a primary effluent treatment/ recovery system. Although effluent discharge standards had not been set at that time, Copolymer elected to proceed on its own, primarily to keep one step ahead of the regulatory agencies thus having the option of evaluating and selecting the most efficient and economical system for the particular conditions at Baton Rouge. A literature search indicated a dearth of information on latex waste treatment and a subsequent evaluation of common waste treatment processes quickly eliminated: 1) the filtration process because of the extreme expenses; 2) the sedimentation process because of the wide specific gravity range of the waste solids (0.6 to 2.0); and 3) others, such as the centrifugation and microscreening, because of the sheer volume to be processed. The dissolved air flotation process (DAF) was finally selected for further investigation because of its already proven ability to remove both light and heavy materials and also because of promising initial flotation bench scale tests. 99 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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