Site Characterization Plan: Uranium Stabilization through Polyphosphate Injection

Vermeul, Vince R. ; Fruchter, Jonathan S. ; Wellman, Dawn M. ; Williams, Bruce A. ; Williams, Mark D.

Pacific Northwest National Laboratory (U.S.)

关键词: Removal;    Uranium;    Testing;    Site Characterization;    Stabilization;   

DOI  :  10.2172/896905
RP-ID  :  PNNL-16008
RP-ID  :  AC05-76RL01830
RP-ID  :  896905

美国|英语

来源: UNT Digital Library

【 摘 要 】

An initial feasibility study of options to treat the uranium plume at the 300-FF-5 Operable Unit considered hydraulic containment, slurry wall containment, and groundwater extraction as potential remedial action technologies. None were selected for interim action, and reduction of contamination levels by natural processes was considered a viable alternative while source removal actions continued. Subsequent planning for a Phase III feasibility study focused on methods that would reduce the concentration of uranium in the aquifer, including multiple methods to immobilize uranium using chemical-based technologies. Based on an initial technology screening, the polyphosphate technology was identified as the best candidate to treat the for further evaluation and selected for treatability testing. The overall objective of the polyphosphate treatability test is to evaluate the efficacy of using polyphosphate injections to treat uranium contaminated groundwater in situ. The objective of the work elements included in this site characterization plan is to collect site-specific characterization data that will be needed to design and implement a field-scale demonstration of the technology.