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


Personal Author(s) : Evans, Patrick ; Smith, Jennifer ; Singh, Tony ; Hyung, Hoon ; Arucan, Clyde ; Berokoff, Daniel ; Friese, David ; Overstreet, Ryan ; Vigo, Renato ; Rittman, Bruce


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a602379.pdf


Report Date : 18 Nov 2013


Pagination or Media Count : 384


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 g/L 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-N/L in the effluent of the lag reactor during Steady State.


Descriptors :   *NITRATES , *PERCHLORATES , *WATER TREATMENT , BIODEGRADATION , COST ANALYSIS , DISINFECTION , DRINKING WATER , FIELD TESTS , FILTRATION , MEMBRANES , SAMPLING , SITES


Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE