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A reactor model for pulsed pumping groundwater remediation
C M Tenney1, C M Lastoskie, M J Dybas
1Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109-2125, USA.
Water Research
|September 24, 2004
Summary
A new hybrid in situ bioremediation and pulsed pumping method effectively cleans carbon tetrachloride groundwater contamination. This strategy optimizes well configuration and pumping schedules for efficient pollutant degradation.
Area of Science:
- Environmental Engineering
- Hydrogeology
- Bioremediation
Background:
- Carbon tetrachloride plumes pose significant environmental risks.
- In situ bioremediation offers a promising approach for groundwater cleanup.
- Pulsed pumping can enhance contaminant capture and treatment zones.
Purpose of the Study:
- To develop and evaluate a cost-effective hybrid in situ bioremediation and pulsed pumping strategy.
- To remediate a carbon tetrachloride plume in Schoolcraft, Michigan.
- To optimize the pulsed pumping system for maximum pollutant degradation.
Main Methods:
- A hybrid strategy combining in situ bioremediation with a pulsed pumping system.
- Utilizing a line of alternating injection and extraction wells.
- Developing a computationally efficient reactor model to simulate aquifer zones.
Main Results:
- The pulsed pumping system effectively creates and cleans recirculation zones.
- The reactor model accurately predicts solute concentration histories.
- Field data and simulations confirm the model's predictions.
Conclusions:
- The hybrid bioremediation/pulsed pumping strategy is a cost-effective solution for carbon tetrachloride plume remediation.
- The reactor model aids in optimizing well configuration, pumping rates, and schedules.
- This approach demonstrates significant potential for efficient groundwater pollutant degradation.