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80 WASTEWATER PRETREATMENT CONCEPTUAL DESIGN FOR A POLYMER MANUFACTURER James E. Robin, Engineer Montgomery Watson Wayzata, Minnesota 55391 Robert J. Januska, Supervising Engineer Montgomery Watson Metairie, Louisiana 70002 Alison M. Martin, Supervising Engineer Montgomery Watson Boston, Massachusetts 02109 INTRODUCTION A wastewater pretreatment system has been conceptually designed for a polymer manufacturer in the South. CYTEC Industries (CYTEC), a business unit of American Cyanamid, Inc., operates a facility in Mobile, Alabama, which manufactures cationic, anionic, and nonionic polymers and alum for water treatment and paper processing, and performs bulk resale of sulfuric acid. CYTEC currently pumps its wastewater to an adjacent paper mill's aerated lagoon system for final treatment. Solids formation and deposition has been problematic in the aerated lagoon, and this condition has worsened over the last few years. A project was initiated to develop an effective solution to this problem. This paper summarizes the findings of the investigations undertaken to develop a wastewater pretreatment system for the Mobile, Alabama CYTEC facility. BACKGROUND Manufacturing Processes The Mobile, Alabama CYTEC plant manufactures three groups of products: water and wastewater treatment polymers, paper processing polymers, and alum. The facility also performs bulk resale of sulfuric acid, which simply involves temporary storage and transfer of concentrated sulfuric acid between tank trucks and rail cars. All alum and polymer manufacturing is performed on a batch basis. When reactors are cleaned out between batches, a caustic solution is heated and stirred in the reactor, and then neutralized and drained through a series of pipes and process ditches to the existing wastewater treatment system. These processes are commonly referred to as "caustic boilouts." Residual alum slurry is also similarly drained to earthen impoundments between batches. Existing Wastewater Treatment System The wastewater collection system transports wastewater from the manufacturing processes, diked tank farm areas, and laboratory to the existing wastewater treatment system. Some of the wastewater from caustic boilouts bypasses the normal collection system and is piped directly to the treatment system. A large fraction of plant stormwater runoff flows through the wastewater collection and treatment systems. Wastewater from the alum manufacturing area is usually routed to earthen impoundments adjacent to the facility. When the impoundments have reached capacity (filled with residual alum slurry and rainwater), they are pumped into the wastewater treatment system. Onsite wastewater process units presently consist only of two hydraulically linked equalization basins. CYTEC currently pumps equalized wastewater (under an Alabama Department of Environmental Management indirect discharger permit) to an adjacent paper manufacturer's 76-acre aerated lagoon system for treatment prior to final NPDES discharge. The lagoon system is configured as a raceway, with floating mechanical aerators positioned along the entire flow path. The CYTEC discharge into 49th Purdue Industrial Waste Conference Proceedings, 1994 Lewis Publishers, Chelsea, Michigan 48118. Printed in U.S.A. 755
Object Description
Purdue Identification Number | ETRIWC199480 |
Title | Wastewater pretreatment conceptual design for a polymer manufacturer |
Author |
Robin, James E. Januska, Robert J. Martin, Alison M. |
Date of Original | 1994 |
Conference Title | Proceedings of the 49th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,44602 |
Extent of Original | p. 755-770 |
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 | 2009-12-10 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 755 |
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 | 80 WASTEWATER PRETREATMENT CONCEPTUAL DESIGN FOR A POLYMER MANUFACTURER James E. Robin, Engineer Montgomery Watson Wayzata, Minnesota 55391 Robert J. Januska, Supervising Engineer Montgomery Watson Metairie, Louisiana 70002 Alison M. Martin, Supervising Engineer Montgomery Watson Boston, Massachusetts 02109 INTRODUCTION A wastewater pretreatment system has been conceptually designed for a polymer manufacturer in the South. CYTEC Industries (CYTEC), a business unit of American Cyanamid, Inc., operates a facility in Mobile, Alabama, which manufactures cationic, anionic, and nonionic polymers and alum for water treatment and paper processing, and performs bulk resale of sulfuric acid. CYTEC currently pumps its wastewater to an adjacent paper mill's aerated lagoon system for final treatment. Solids formation and deposition has been problematic in the aerated lagoon, and this condition has worsened over the last few years. A project was initiated to develop an effective solution to this problem. This paper summarizes the findings of the investigations undertaken to develop a wastewater pretreatment system for the Mobile, Alabama CYTEC facility. BACKGROUND Manufacturing Processes The Mobile, Alabama CYTEC plant manufactures three groups of products: water and wastewater treatment polymers, paper processing polymers, and alum. The facility also performs bulk resale of sulfuric acid, which simply involves temporary storage and transfer of concentrated sulfuric acid between tank trucks and rail cars. All alum and polymer manufacturing is performed on a batch basis. When reactors are cleaned out between batches, a caustic solution is heated and stirred in the reactor, and then neutralized and drained through a series of pipes and process ditches to the existing wastewater treatment system. These processes are commonly referred to as "caustic boilouts." Residual alum slurry is also similarly drained to earthen impoundments between batches. Existing Wastewater Treatment System The wastewater collection system transports wastewater from the manufacturing processes, diked tank farm areas, and laboratory to the existing wastewater treatment system. Some of the wastewater from caustic boilouts bypasses the normal collection system and is piped directly to the treatment system. A large fraction of plant stormwater runoff flows through the wastewater collection and treatment systems. Wastewater from the alum manufacturing area is usually routed to earthen impoundments adjacent to the facility. When the impoundments have reached capacity (filled with residual alum slurry and rainwater), they are pumped into the wastewater treatment system. Onsite wastewater process units presently consist only of two hydraulically linked equalization basins. CYTEC currently pumps equalized wastewater (under an Alabama Department of Environmental Management indirect discharger permit) to an adjacent paper manufacturer's 76-acre aerated lagoon system for treatment prior to final NPDES discharge. The lagoon system is configured as a raceway, with floating mechanical aerators positioned along the entire flow path. The CYTEC discharge into 49th Purdue Industrial Waste Conference Proceedings, 1994 Lewis Publishers, Chelsea, Michigan 48118. Printed in U.S.A. 755 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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