Development of a biological treatment system for Hanford groundwater remediation

Technical Report · Sun Apr 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6941773· OSTI ID:6941773

Brouns, T M; Koegler, S S; Heath, W O; Fredrickson, J K ^[1]; Stensel, H D ^[2]; Johnstone, D L ^[3]; Donaldson, T L ^[4]

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1. Pacific Northwest Lab., Richland, WA (USA)
2. Washington Univ., Seattle, WA (USA)
3. Washington State Univ., Pullman, WA (USA)
4. Oak Ridge National Lab., TN (USA)

The primary objective of the biological treatment program is to develop and demonstrate a biological process for Hanford groundwater remediation that is capable of nitrate (NO {sub 3}{sup {minus}}) and organic contaminant destruction. Biodenitrification using facultative anaerobic microorganisms is a promising technology for the simultaneous removal of NO{sub 3}{sup {minus}} and organics from contaminated aqueous streams. During FY 1989, microbial consortium from the Hanford groundwater was shown to degrade both NO{sub 3}{sup {minus}} and carbon tetrachloride (CC1{sub 4}). A pilot-scale treatment system was subsequently designed and constructed based on the results of laboratory- and bench-scale testing. The pilot-scale system demonstrated continuous degradation of NO{sub 3}{sup {minus}} and CC1{sub 4} in a simulated groundwater. This report summarizes the results of biological groundwater treatment studies performed during FY 1989 at the pilot-, laboratory-, and bench-scales. Pilot-scale test were conducted using a simulate Hanford groundwater with a continuous stirred-tank bioreactor (CSTR) and a fluidized-bed bioreactor that was added to the pilot-scale treatment system in FY 1989. Laboratory test focused on the degradation of CC1{sub 4} and on the microbial toxicity from CC1{sub 4}, hexavalent chromium (Cr{plus} {sup 6}), and cyanide (CN){sup {minus}} 15 refs., 18 figs., 1 tab.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6941773
• Report Number(s): PNL-7290; ON: DE90010365
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
59 BASIC BIOLOGICAL SCIENCES
CARBON TETRACHLORIDE
BIODEGRADATION
GROUND WATER
DENITRIFICATION
NITRATES
ANAEROBIC CONDITIONS
BACTERIA
CHROMIUM
CYANIDES
HANFORD RESERVATION
MICROORGANISMS
ORGANIC WASTES
PILOT PLANTS
PROGRESS REPORT
WATER TREATMENT
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
DECOMPOSITION
DOCUMENT TYPES
ELEMENTS
FUNCTIONAL MODELS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
METALS
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
TRANSITION ELEMENTS
US DOE
US ERDA
US ORGANIZATIONS
WASTES
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
550700 - Microbiology