Please use this identifier to cite or link to this item:
Title: Microbial dynamics of a fluidized bed bioreactor treating perchlorate in groundwater
Authors: Knotek-Smith, Heather M.
Thomas, Catherine C.
Keywords: Groundwater--Pollution
Groundwater--Purification--Perchlorate removal
Explosives industry
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Special Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/EL SR-22-7
Abstract: Optimization of operation and performance of the groundwater treatment system regarding perchlorate removal at Longhorn Army Ammunition Plant (LHAAP) is dependent on specific conditions within the reactor and the larger groundwater treatment process. This study evaluated the microbial community compositions within the plant during periods of adequate perchlorate degradation, sub-adequate perchlorate degradation, and non-operating conditions. Factors affecting the performance of the LHAAP ground water treatment system (GWTS) perchlorate de-grading fluidized bed reactor (FBR) are identified and discussed. Isolation of the FBR from naturally occurring microbial populations in the groundwater was the most significant factor reducing system effectiveness. The microbial population within the FBR is highly susceptible to system upsets, which leads to declining diversity within the reactor. As designed, the system operates for extended periods without the desired perchlorate removal without intervention such as a seed inoculant. A range of modifications and the operation of the system are identified to increase the effectiveness of perchlorate removal at LHAAP.
Description: Technical Report
Gov't Doc #: ERDC/EL SR-22-7
Rights: Approved for Public Release; Distribution is Unlimited
Size: 57 pages / 2.18 MB
Types of Materials: PDF
Appears in Collections:Special Report

Files in This Item:
File Description SizeFormat 
ERDC-EL SR-22-7.pdf2.18 MBAdobe PDFThumbnail