Numerical simulation of surfactant-enhanced remediation using UTCHEM
- INTERA Inc., Albuquerque, NM (United States)
- State Univ. of New York, Buffalo, NY (United States)
- Univ. of Texas, Austin, TX (United States)
- INTERA Inc., Austin, TX (United States)
The UTCHEM multiphase compositional simulator was used to model the migration and surfactant-enhanced remediation of perchloroethylene (PCE) in a test cell at Canadian Forces Base Borden, Ontario. A line of five injection wells was installed on one side of the test cell and a line of five withdrawal wells was installed on the opposite side of the cell. The injection and withdrawal wells penetrated the entire depth of the sand aquifer. A total of 231 liters of PCE was injected into a shallow well in the center of the test cell. Prior to surfactant flushing, 47 liters of free-phase PCE, which flowed into the injection and withdrawal wells over a two week period, was removed using a small-diameter plastic tube and a peristaltic pump. One to two months of water flooding (pump-and-treat), using the injection-withdrawal well system, flushed an additional 12 liters of PCE. Following the water flooding, an aqueous surfactant solution of 1% nonyl phenol ethoxylate and 1% phosphate ester of the nonyl phenol ethoxylate was circulated through the test cell via the injection-withdrawal wells. Between November 11, 1990 and May 29, 1991, a total of 130,000 liters of surfactant solution were recirculated through the test cell, during which time 62 liters of PCE were recovered. This paper describes preliminary scoping simulations of the surfactant flushing process at the Borden test site to demonstrate the capability of UTCHEM to model surfactant-enhanced remediation of a non-aqueous-phase liquid (NAPL). A discussion of efforts to simulate PCE migration is also presented.
- OSTI ID:
- 400842
- Report Number(s):
- CONF-950828-; TRN: IM9650%%248
- Resource Relation:
- Conference: 1995 National heat transfer conference, Portland, OR (United States), 5-9 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Heat transfer -- Portland 1995; El-Genk, M.S. [ed.] [Univ. of New Mexico, Albuquerque, NM (United States)]; PB: 378 p.; AIChE Symposium Series, Volume 91, Number 306
- Country of Publication:
- United States
- Language:
- English
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