Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Pilot Test for in Situ Bioremediation of Perchlorate & Trichlorethene in Groundwater Using an Active Biobarier, Final Report
Author: Pilot Test for in Situ Bioremediation to Treat Perchlorate in GET D Recharge Water
Author: Phase II Pilot Test for in Situ Bioremediation to Treat Perchlorate in GET D Recharge Water
Author: Workplan for a Pilot Test of in Situ Bioremediation of Perchlorate and Trichlorethene Impacted Groundwater
Author: Pilot Test for in Situ Bioremediation of Perchlorate & Trichlorethene in Groundwater at Area 20
Author: In Situ Bioremediation of Trichloroethylene Using Burkholderia Cepacia G4 PR1
Author: Richard A. SnyderPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 12
Book Description
Bioaugmentation with Burkholderia Cepacia PR1301 for in Situ Bioremediation of Trichloroethylene Contaminated Water
Author: Engineered Approaches to in Situ Bioremediation of Chlorinated Solvents
Author: Publisher: DIANE Publishing
ISBN:
Category : In situ bioremediation
Languages : en
Pages : 152
Book Description
Modeling a Field Application of in Situ Bioremediation of Perchlorate- Contaminated Groundwater Using Horizontal Flow Treatment Wells (HFTWs)
Author: Peter G. ChosaPublisher:
ISBN: 9781423518594
Category : Bioremediation
Languages : en
Pages : 193
Book Description
Perchlorate contaminated groundwater is rapidly becoming a significant environmental remediation issue for the Department of Defense. In this study, an existing numerical model that simulates the operation of a Horizontal Flow Treatment Well (HFTW) system to effect the in situ biodegradation of perchlorate through the addition of an electron donor is modified to include a submodel that describes bioclogging. Bioclogging restricts flow out of the HFTW due to the accumulation of biomass directly adjacent to the well. The modified model is then applied to an existing perchlorate contaminated site that will be used for an evaluation of the HFTW technology. Simulations were conducted to determine the impact of altering various engineered parameters on HFTW performance. Simulation results indicate that higher time averaged electron donor concentrations and HFTW pumping rates lead to more perchlorate degradation in terms of total mass of perchlorate removed. Simulation results also indicate that varying the electron donor addition schedule has little impact on HFTW performance. The simulations conducted in this study show that, regardless of the engineered parameter values, bioclogging does not impact the ability of the HFTW technology to effect in situ biodegradation of perchlorate at the evaluation site.
Field Demonstration of in Situ Perchlorate Bioremediation at Building 1419
Author: Randall J. CramerPublisher:
ISBN: 9781423514664
Category :
Languages : en
Pages : 80
Book Description
The Applied Technology Department at the Indian Head Division, Naval Surface Warfare Center and Shaw Environmental, Inc., have just successfully completed a field demonstration of in situ bioremediation of a groundwater aquifer contaminated with perchlorate. Using a recirculation cell design, naturally occurring microorganisms were stimulated to degrade perchlorate by injecting a food source (lactate) and neutralizing the groundwater acidity with a carbonate buffer. Starting with perchlorate concentrations in excess of 210 mg/L, perchlorate levels were reduced by more than 95% in eight of the nine test plot monitoring wells over the 5 months of sampling. In two of the monitoring wells, the perchlorate levels were lowered to less than 5 ppb. In addition to the perchlorate levels and the pH, alkalinity, nitrate, and sulfate concentrations were measured. In situ bioremediation techniques are much less expensive and significantly lower in maintenance than traditional ex situ pump- and-treat systems. This is the first field trial conducted on the east coast of the United States, the first trial performed in an acidic aquifer, and the first demonstration of treating in situ perchlorate levels in excess of 200 mg/L. This project provides new and valuable information concerning the application of bioremediation for in situ perchlorate treatment.