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By Committee on Review and Evaluation of the Army Chemical Stockpile Disposal Program, Board on Army Sc

ISBN-10: 0309069459

ISBN-13: 9780309069458

ISBN-10: 0309516218

ISBN-13: 9780309516211

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Extra resources for Integrated Design of Alternative Technologies for Bulk-Only Chemical Agent Disposal Facilities (Compass Series (Washington, D.C.).)

Sample text

Criteria for detection limits to verify the absence of agent in the aqueous waste streams after final on-site treatment should be based on a risk evaluation that assumes either discharge to public waters or another final disposal method. Risk evaluations must address both worker and public risks. 9999 percent destruction level) of agent have shown that public risk is minimal (Garrick and Gekler, 1999). However, an evaluation of worker risk and potential mitigation measures has not been completed.

G. chromium, nickel), could affect the disposal of the salt streams, which consist largely of sulfate and phosphate salts. The Army will have to determine the amounts and effects of metals in the SCWO effluent as a result of corrosion, including their effects downstream of the SCWO reactor and how their presence will affect handling and disposal, overall effluent quality, monitoring, and regulatory and permitting issues. Operational Issues Problems with salt/solids management, including the potential for plugging and difficulties in pressure let-down, was thoroughly described in the SCWO report (NRC, 1998) but have not been resolved in the ADP as currently modified.

Nutrients are added, the pH is adjusted and the hydrolysate is diluted with water in preparation for the transfer to the SBRs. Sodium bicarbonate solution is added to the SBRs to neutralize the acids formed during biotreatment and to maintain pH. 45 (sludge), and salt. Sludge, which is settled and withdrawn daily from the SBRs, is biologically stabilized in aerobic digesters and then thickened and dewatered prior to disposal. The supernatant from the SBRs is pumped to the Effluent Filtration Module.

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Integrated Design of Alternative Technologies for Bulk-Only Chemical Agent Disposal Facilities (Compass Series (Washington, D.C.).) by Committee on Review and Evaluation of the Army Chemical Stockpile Disposal Program, Board on Army Sc


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