multi phase extraction Articles
-
Enhanced Removal of Separate Phase Viscous Fuel by Electrical Resistance Heating and multi phase Extraction
Abstract A floating hydrocarbon plume at a manufacturing facility in Georgia was remediated using electrical resistance heating (ERH) and multi-phase extraction. The hydrocarbon was a specialty fuel similar to kerosene or diesel fuel. Initially, hydrocarbon covered an area of 4900 ft2 (500 m2) and was up to l0 ft (3 m) thick, with most wells containing 1-3 ft (0.5-1 m) of hydrocarbon. Most of ...
-
Raynesway resource park - Case Study
The Raynesway Resource Park is a 35 hectare site bounded on three sides by the River Derwent. The southern half of a former chemicals plant, soils and groundwaters were impacted by chlorinated solvents, acid tars, hydrocarbons and ammoniacal sludges. Celtic designed a sophisticated groundwater treatment system, integrating air sparging, multi-phase extraction and chemical oxidation to address ...
-
Thermal treatment of thick peat layers – DNAPL removal and shrinkage
Abstract A PCE DNAPL source zone was treated using thermal conduction heating combined with multi-phase extraction. Thick peat layers, even when contaminated with PCE DNAPL, were remediated to average soil PCE concentrations of 0.17 mg/kg (99.6% reduction compared to starting levels). This was accomplished in 83 days of heating, by elevating the temperature to the boiling point of water, and by ...
-
Case study: Ford Getrag
ISTR Overview Consultant: ICF Neighborhood: Downtown Heating Tubes: 130 Target Temp: 100 ˚C Heating Period: 49 Days Target: 6 mg/kg Destruction Rate Efficiency: > 99% Contaminant: Petroleum Hydrocarbons PAHs, Other Inorganics Geology: Fine Alluvium Volume: 50-500 A pilot test preceded the full scale thermal remediation. The subsurface soils were impacted by DNAPL trapped in a ...
-
Ozone Case Study
Historic activities at the site involved degreasing and industrial clean-ing service using solvents, primarily tetrachloroethene (PCE) and trichloroethene (TCE) to support the growing aerospace industry in Southern California. Site investigations indicated the presence of volatile organic compounds (VOCs), including. PCE, TCE, cis-1,2-dicloroethene (1,2-DCE), 1,1-dichloroethane (1,1-DCA), ...
-
Environmental Liability Management for a Large American University
Challenge A large American university recently acquired a two-hundred acre hospital property for the purpose of future developments. One fifth of the property was impacted by chlorinated solvents and petroleum. Antea Group was appointed to assume the liability, return the land to residential use, and abate the migration of contaminants with minimal disruption to the campus or the hospital. ...
-
Electrical Resistance Heating: a Hot New Approach to Soil and Groundwater Remediation
Electrical Resistance Heating (ERH) is an aggressive remediation technology that can quickly reduce the mass of volatile organic compounds (VOCs) in soil and groundwater by over 99%. The process is often used to clean sites where other technologies have had limited success. Larger ERH sites are cleaned within 6 to 12 months and smaller sites can be cleaned in half that time or less. The ...
-
U.S. Air Force DOD Project - Case Study
Environmental Issues Controlling the off-gas from a remediation project, where high concentrations of petroleum hydrocarbons are present, can be a difficult if not dangerous process when utilizing internal combustion engines and conventional oxidation technology. In more recent years, the use of high vacuum pumps to accomplish both liquid and gas phase extraction — sometimes referred to ...
-
Achieving exemplary compliance case study
Challenge: A major integrated oil company retained the services of Antea Group to manage environmental liability at a bulk storage and distribution facility that supplies gasoline, diesel fuel and other refined petroleum product to Minnesota, Iowa and Wisconsin. The property presented a series of unique challenges including multiple LNAPL plumes, LNAPL identified within karst bedrock, ...
-
Off-Gas Treatment Technologies for Soil Vapor Extraction Systems: State of the Practice
Untitled Document EXECUTIVE SUMMARY This document provides state-of-the-practice information on off-gas treatment technologies for soil vapor extraction (SVE) systems currently being used to clean up hazardous waste sites. It provides information on a wide variety of processes, including common practices as well as innovative emerging alternatives to illustrate the state ...
-
3-in-1 Flame-Ox High BTU Thermal Oxidizer - Case Study
Environmental Issues Controlling the off-gas from a remediation project, where high concentrations of petroleum hydrocarbons are present, can be a difficult if not dangerous process when utilizing internal combustion engines and conventional oxidation technology. In more recent years, the use of high vacuum pumps to accomplish both liquid and gas phase extraction — sometimes referred to as ...
-
In-situ Thermal Remediation Under an Apartment Building
This paper presents the implementation and results of ET-DSP, an in-situ electrical soil heating technology, in combination with high vacuum dual phase extraction, to achieve the removal of vapour pressure sensitive BTEX compounds from under an occupied residential apartment building. Operating within several engineering, environmental, and safety constraints, a design was developed in order to ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you