Accession Number:

ADA602379

Title:

Perchlorate Destruction and Potable Water Production Using Membrane Biofilm Reduction and Membrane Filtration

Descriptive Note:

Final rept. Oct 2005-Nov 2013

Corporate Author:

ARIZONA STATE UNIV TEMPE

Report Date:

2013-11-18

Pagination or Media Count:

384.0

Abstract:

This study demonstrated use of a membrane biofilm reactor MBfR for drinking water treatment from perchlorate- and nitrate- contaminated groundwater. The MBfR used anoxic autotrophic biodegradation for the complete destruction of perchlorate and nitrate. The objectives were to demonstrate the feasibility of MBfR to destroy perchlorate and nitrate in groundwater and produce potable water at the pilot scale, evaluate process control parameters to optimize performance, and estimate full-scale technology costs. These objectives were successfully demonstrated. The study included four phases Start-Up, Optimization, Steady State, and a Challenge phase to assess system robustness and resiliency. Using indigenous organisms, the MBfR was colonized with perchlorate- and nitrate-reducing bacteria within approximately one month. Perchlorate was reduced by approximately 94 percent to 9.2 2.3 gL in the effluent of the lag reactor during Steady State. Total nitrogen the sum of nitrate and nitrite was reduced by approximately 99 percent to an average of 0.12 0.07 mg-NL in the effluent of the lag reactor during Steady State.

Subject Categories:

  • Inorganic Chemistry
  • Organic Chemistry
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE