Biotreatment of produced waters for volume reduction and contaminant removal

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Description

Produced water is wastewater that is brought to the surface from natural gas wells during natural gas production. Its constituents, mostly salt, with traces of hydrocarbons and heavy metals, are a significant disposal problem. Argonne National Laboratory (ANL), in partnership with the Gas Research Institute (GRI), has developed a low-cost, low-tech method, in which green plants are used to reduce the volume of produced water. The authors have designed an engineered bioreactor system, which is modeled after natural saline wetland ecosystems. The plant bioreactor system maximizes plant evapotranspiration to reduce wastewater volume and, concurrently, may function as a biological filter ... continued below

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18 p.

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Negri, M.C.; Hinchman, R.R. & Mollock, J. October 1, 1997.

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Description

Produced water is wastewater that is brought to the surface from natural gas wells during natural gas production. Its constituents, mostly salt, with traces of hydrocarbons and heavy metals, are a significant disposal problem. Argonne National Laboratory (ANL), in partnership with the Gas Research Institute (GRI), has developed a low-cost, low-tech method, in which green plants are used to reduce the volume of produced water. The authors have designed an engineered bioreactor system, which is modeled after natural saline wetland ecosystems. The plant bioreactor system maximizes plant evapotranspiration to reduce wastewater volume and, concurrently, may function as a biological filter to enhance contaminant degradation and immobilization in the root/rhizosphere zone. Halophyte plant species having high salt tolerance and high transpiration rates were selected after they tested them in greenhouse experiments. Models obtained by using their greenhouse findings reduced the volume of the wastewater (up to 6% salt) by 75% in about 8 days. A field demonstration of the bioreactor, designed on the basis of the results from the greenhouse study, is successfully under way at a natural gas well site in Oklahoma. The process could offer the petroleum industry a low-cost biological alternative to existing expensive options.

Physical Description

18 p.

Notes

OSTI as DE97054580

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  • 4. international petroleum environmental conference, San Antonio, TX (United States), 9-12 Sep 1997

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  • Other: DE97054580
  • Report No.: ANL/ES/CP--93084
  • Report No.: CONF-970990--
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/554814 | External Link
  • Office of Scientific & Technical Information Report Number: 554814
  • Archival Resource Key: ark:/67531/metadc689822

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • June 23, 2016, 1:23 p.m.

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Negri, M.C.; Hinchman, R.R. & Mollock, J. Biotreatment of produced waters for volume reduction and contaminant removal, report, October 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc689822/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.