Treatability Test of a Stacked-tray Air Stripper for VOC in Water PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A common strategy for hydraulic containment and mass removal at VOC contaminated sites is'pump and treat (P & T)'. In P & T operations, contaminated ground water is pumped from wells, treated above ground, and discharged. Many P & T remediation systems at VOC sites rely on air stripping technology because VOCs are easily transferred to the vapor phase. In stacked-tray air strippers, contaminated water is aerated while it flows down through a series of trays. System operations at LLNL are strictly regulated by the California and federal Environmental Protection Agencies (Cal/EPA and EPA), the Bay Area Air Quality Management District (BAAQMD), the California Regional Water Quality Control Board (RWQCB) and the Department of Toxic Substances Control (DTSC). These agencies set discharge limits, require performance monitoring, and assess penalties for non-compliance. National laboratories are also subject to scrutiny by the public and other government agencies. This extensive oversight makes it necessary to accurately predict field treatment performance at new extraction locations to ensure compliance with all requirements prior to facility activation. This paper presents treatability test results for a stacked- tray air stripper conducted at LLNL and compares them to the vendor's modeling software results.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A common strategy for hydraulic containment and mass removal at VOC contaminated sites is'pump and treat (P & T)'. In P & T operations, contaminated ground water is pumped from wells, treated above ground, and discharged. Many P & T remediation systems at VOC sites rely on air stripping technology because VOCs are easily transferred to the vapor phase. In stacked-tray air strippers, contaminated water is aerated while it flows down through a series of trays. System operations at LLNL are strictly regulated by the California and federal Environmental Protection Agencies (Cal/EPA and EPA), the Bay Area Air Quality Management District (BAAQMD), the California Regional Water Quality Control Board (RWQCB) and the Department of Toxic Substances Control (DTSC). These agencies set discharge limits, require performance monitoring, and assess penalties for non-compliance. National laboratories are also subject to scrutiny by the public and other government agencies. This extensive oversight makes it necessary to accurately predict field treatment performance at new extraction locations to ensure compliance with all requirements prior to facility activation. This paper presents treatability test results for a stacked- tray air stripper conducted at LLNL and compares them to the vendor's modeling software results.
Author: J. Paul Guyer, P.E., R.A.
Publisher: Guyer Partners
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 24
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Book Description
Introductory technical guidance for civil, environmental and mechanical engineers and construction managers interested in removal of volatile organic compounds from water streams using air stripping technology. Here is what is discussed: 1. INTRODUCTION 2. DESCRIPTION OF AIR STRIPPERS 3. DESIGN METHODS 4. TREATABILITY 5. COMPARISON OF AIR STRIPPERS 6. AIR POLLUTION CONTROL REQUIREMENTS 7. FLOODING 8. PROCESS CONTROL 9. ECONOMIC EVALUATION 10. REFERENCES.
Author: L. J. Bilello
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
Environmental Science and Engineering, Inc. (ESE) performed a series of test runs in a packed column air stripper to determine performance for removal of four volatile contaminants. Test results were used to determine effect of various conditions such as matrix, contaminant concentration, stripper configuration, and temperature on stripper performance for treating ground water at various Department of the Army installations.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 37
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Book Description
Air stripping is an economical and efficient method of removing dissolved volatile organic compounds (VOCs) from contaminated groundwater. Air strippers, however, produce a vent air stream, which must meet the local air quality limits. If the VOC content exceeds the limits, direct discharge is not possible; therefore, a carbon adsorption VOC capture system is used to treat the vent air. This treatment step adds a cost of at least $50/lb of VOC captured. In this program, a combined air stripper/membrane vapor separation system was constructed and demonstrated in the laboratory. The membrane system captures VOCs from the stripper vent stream at a projected cost of $15/lb VOC for a water VOC content of 5 ppmw, and $75/lb VOC for a water VOC content of 1 ppmw. The VOCs are recovered as a small, concentrated liquid fraction for disposal or solvent recycling. The concept has been demonstrated in experiments with a system capable of handling up to 150,000 gpd of water. The existing demonstration system is available for field tests at a DOE facility or remediation site. Replacement of the current short air stripping tower (effective height 3 m) with a taller tower is recommended to improve VOC removal.
Author:
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 178
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Book Description
Author: Purdue Research Foun
Publisher: CRC Press
ISBN: 9781575040226
Category : Technology & Engineering
Languages : en
Pages : 872
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Book Description
Proceedings of the 50th Industrial Waste Conference is the only comprehensive documentation of the entire seminar. It is an overview of the current state of hazardous waste identification, management and disposal.
Author: Water Environment Federation. Task Force on Design of Wastewater and Stormwater Pumping Stations
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 528
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Book Description
Assists the practicing engineer in the design of wastewater and stormwater pumping stations. This is for the experienced designer rather than the novice.
![Combined Air Stripper/membrane Vapor Separation Systems. [Volatile Organic Compounds]. PDF](https://books.google.com/books/content/images/frontcover/oiAAwgEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 37
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Book Description
Air stripping is an economical and efficient method of removing dissolved volatile organic compounds (VOCs) from contaminated groundwater. Air strippers, however, produce a vent air stream, which must meet the local air quality limits. If the VOC content exceeds the limits, direct discharge is not possible; therefore, a carbon adsorption VOC capture system is used to treat the vent air. This treatment step adds a cost of at least $50/lb of VOC captured. In this program, a combined air stripper/membrane vapor separation system was constructed and demonstrated in the laboratory. The membrane system captures VOCs from the stripper vent stream at a projected cost of $15/lb VOC for a water VOC content of 5 ppmw, and $75/lb VOC for a water VOC content of 1 ppmw. The VOCs are recovered as a small, concentrated liquid fraction for disposal or solvent recycling. The concept has been demonstrated in experiments with a system capable of handling up to 150,000 gpd of water. The existing demonstration system is available for field tests at a DOE facility or remediation site. Replacement of the current short air stripping tower (effective height 3 m) with a taller tower is recommended to improve VOC removal.
Author:
Publisher:
ISBN:
Category : Factory and trade waste
Languages : en
Pages : 888
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Book Description
Author: Lawrence K. Wang
Publisher: Springer Science & Business Media
ISBN: 1597450294
Category : Science
Languages : en
Pages : 697
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Book Description
The past thirty years have witnessed a growing worldwide desire that po- tive actions be taken to restore and protect the environment from the degr- ing effects of all forms of pollution—air, water, soil, and noise. Because pollution is a direct or indirect consequence of waste, the seemingly idealistic demand for “zero discharge” can be construed as an unrealistic demand for zero waste. However, as long as waste continues to exist, we can only attempt to abate the subsequent pollution by converting it to a less noxious form. Three major questions usually arise when a particular type of pollution has been id- tified: (1) How serious is the pollution? (2) Is the technology to abate it ava- able? and (3) Do the costs of abatement justify the degree of abatement achieved? This book is one of the volumes of the Handbook of Environmental Engineering series. The principal intention of this series is to help readers f- mulate answers to the last two questions above. The traditional approach of applying tried-and-true solutions to specific pollution problems has been a major contributing factor to the success of en- ronmental engineering, and has accounted in large measure for the establi- ment of a “methodology of pollution control. ” However, the realization of the ever-increasing complexity and interrelated nature of current environmental problems renders it imperative that intelligent planning of pollution abatement systems be undertaken.
