Source treatment and barriers using ORC{reg_sign} to enhance natural attenuation
- Regenesis Bioremediation Products, San Juan Capistrano, CA (United States)
ORC is a unique formulation of magnesium peroxide that releases oxygen slowly when hydrated. The compound is insoluble and releases oxygen while being converted to ordinary magnesium hydroxide which is also insoluble. ORC is packaged in exchangeable filter socks and is contacted with contaminated groundwater via an array of wells or trenches. ORC can also be made into a slurry to create permanent implants in the saturated zone, or dispersed as a free powder for the in-situ or ex-situ treatment of soil. These methods enhance the intrinsic bioremediation of aerobically degradable compounds and are summarized. ORC mediated oxygenated zones generally last four months to a year as a function of contaminant flux. The objective of the oxygen barrier is plume cut-off, however, any significant reduction of contaminant mass will reduce risk. A broad array of treatment points, in which ORC is backfilled or injected, can be effective for low-level source treatment. The points can be implemented with low-cost, small-bore technologies to achieve full remediation or risk reduction objectives. An overview of the history of the environmental applications of ORC, and the evolution of the strategies for site closure involving direct treatment of contaminants sources and control of plume migration, will be the emphasis of this presentation.
- OSTI ID:
- 452028
- Report Number(s):
- CONF-9611118-; TRN: IM9715%%60
- Resource Relation:
- Conference: HazMat West `96. International environmental management and technology conference and exhibition, Long Beach, CA (United States), 5-7 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 12. annual environmental management and technology conference west -- HazMat `96 west: Technical papers; PB: 544 p.
- Country of Publication:
- United States
- Language:
- English
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