D-Area Drip Irrigation-Phytoremediation Project: SRTC Final Report

Wilde, E.W.

Savannah River Site (S.C.)

关键词: By-Products;    Plants;    Pumping;    Irrigation;    Cottonwoods;   

DOI  :  10.2172/807121
RP-ID  :  WSRC-TR-2002-00080
RP-ID  :  AC09-96SR18500
RP-ID  :  807121

美国|英语

来源: UNT Digital Library

【 摘 要 】

Groundwater in D-Area at the Savannah River Site (SRS) is contaminated with trichloroethylene (TCE) and by-products resulting from discharges of this organic solvent during past operations. Several potential clean-up strategies are being or have been investigated, including a novel drip irrigation-phytoremediation process that is the focus of the treatability study described in this report. The contaminated groundwater in D-Area occurs primarily at depths of 30 to 50 feet below ground surface, well below the depths that are typically penetrated by plant roots. The system investigated in this study involved pumping water from the contaminated aquifer and discharging the water into overlying test plots below the surface using drip irrigation. The test plots contained pines, cottonwoods, or no vegetation (controls). The primary objective was to determine the overall effectiveness of the process for TCE removal and to elucidate the biotic and abiotic pathways for its removal.