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WASTEWATER TREATMENT EVALUATION AND REDESIGN Hugh McLaughlin, Process Engineer Schenectady Chemicals, Inc. Schenectady, New York 12301 INTRODUCTION In 1979 Schenectady Chemicals, Inc. (SCI) initiated a program to review the operation of its wastewater treatment plant at Rotterdam Junction (RJ). This review was prompted by the escalating cost of activated carbon used in the wastewater train. Currently over one million pounds of activated carbon are used each year. This wastewater review quickly developed a dual purpose to reduce the "cost of carbon" and to develop a waste treatment strategy that will meet the discharge permit levels of the 1980s. The cost of activated carbon is a problem that should be solved, but this solution must incorporate the anticipated lower discharge permit levels of the 1980s. Otherwise, SCI-RJ would again have an unacceptable wastewater treatment program in a very few years. This wastewater treatment review involved three phases: a) piloting of certain existing unit operations and proposed new treatment operations; b) extended observation of current operations; and c) assembly of a new treatment train design. BACKGROUND SCI's Rotterdam Junction Wastewater Treatment Facility treats aqueous effluents from two SCI manufacturing operations. Currently, the treatment consists of three basic operations equalization, removal of water insolubles and carbon filtration. All the chemical sewers empty into a lagoon, a 0.5 million-gallon holding tank. After the lagoon, the wastewater is neutralized and sent to Phase 1 (coagulation, floccu- lation and sedimentation). Phase I removes water insoiubles-essentially xylol and low- molecular-weight resins. Phase II currently consists of filtration through activated carbon. This operation removes all soluble aromatics, specifically phenol. After Phase II, the wastewater is discharged to the Mohawk River. The current train is shown in Figure 1. COAGULA-'JTS 1 ACTIVATED CARBON i 1 WASTt LAGOON PHASE I PHASE II iso;ARCS u.o HCHC MeOK MeOH 0-OK XYL HIRES INS i INSOLUBLES I xylene RESINS AS SLUDGE 1 #-OK 1 i L us ?OLL'JT SOJRC ON f—' TO CALCON KOHAKX RIVER Figure I. Schematic of current wastewater treatment system at Rotterdam Junction. 516
Object Description
Purdue Identification Number | ETRIWC198050 |
Title | Wastewater treatment evaluation and redesign |
Author | McLaughlin, Hugh |
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. 516-521 |
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 516 |
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 | WASTEWATER TREATMENT EVALUATION AND REDESIGN Hugh McLaughlin, Process Engineer Schenectady Chemicals, Inc. Schenectady, New York 12301 INTRODUCTION In 1979 Schenectady Chemicals, Inc. (SCI) initiated a program to review the operation of its wastewater treatment plant at Rotterdam Junction (RJ). This review was prompted by the escalating cost of activated carbon used in the wastewater train. Currently over one million pounds of activated carbon are used each year. This wastewater review quickly developed a dual purpose to reduce the "cost of carbon" and to develop a waste treatment strategy that will meet the discharge permit levels of the 1980s. The cost of activated carbon is a problem that should be solved, but this solution must incorporate the anticipated lower discharge permit levels of the 1980s. Otherwise, SCI-RJ would again have an unacceptable wastewater treatment program in a very few years. This wastewater treatment review involved three phases: a) piloting of certain existing unit operations and proposed new treatment operations; b) extended observation of current operations; and c) assembly of a new treatment train design. BACKGROUND SCI's Rotterdam Junction Wastewater Treatment Facility treats aqueous effluents from two SCI manufacturing operations. Currently, the treatment consists of three basic operations equalization, removal of water insolubles and carbon filtration. All the chemical sewers empty into a lagoon, a 0.5 million-gallon holding tank. After the lagoon, the wastewater is neutralized and sent to Phase 1 (coagulation, floccu- lation and sedimentation). Phase I removes water insoiubles-essentially xylol and low- molecular-weight resins. Phase II currently consists of filtration through activated carbon. This operation removes all soluble aromatics, specifically phenol. After Phase II, the wastewater is discharged to the Mohawk River. The current train is shown in Figure 1. COAGULA-'JTS 1 ACTIVATED CARBON i 1 WASTt LAGOON PHASE I PHASE II iso;ARCS u.o HCHC MeOK MeOH 0-OK XYL HIRES INS i INSOLUBLES I xylene RESINS AS SLUDGE 1 #-OK 1 i L us ?OLL'JT SOJRC ON f—' TO CALCON KOHAKX RIVER Figure I. Schematic of current wastewater treatment system at Rotterdam Junction. 516 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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