Evaluation of Alternative Technologies for Disposal of by National Research Council, Division on Engineering and

By National Research Council, Division on Engineering and Physical Sciences, Board on Army Science and Technology, Committee on Review and Evaluation of the Army Non-Stockpile Chemical Materiel Disposal Program

Chemical conflict materiel (CWM) encompasses varied goods that have been used in the course of 60 years of efforts by way of the us to strengthen an ability for carrying out chemical conflict. Non-Stockpile CWM (NSCWM) is materiel now not incorporated within the present U.S. stock of chemical munitions and contains buried materiel, recovered materiel, parts of binary chemical guns, former creation amenities, and miscellaneous materiel. simply because NSCWM is saved or buried at many destinations, the military is constructing moveable remedy platforms that may be moved from website to website as wanted. initially, the military deliberate to increase 3 portable remedy platforms for nonstockpile chemical materiel: the swift reaction procedure (RRS), the munitions administration gadget (MMD), and the explosive destruction process (EDS).

This record supplementations an prior record that evaluated 8 replacement applied sciences for destruction of the liquid waste streams from of the U.S. Army’s moveable therapy structures for nonstockpile chemical materiel: the RRS and the MMD. This document evaluates an analogous applied sciences for the destruction of liquid waste streams produced via the EDS and discusses the regulatory approval concerns and hindrances for the mixed use of the EDS and the choice applied sciences that deal with the EDS secondary waste streams. even though it specializes in the destruction of EDS neutralent, it additionally takes under consideration the facility of posttreatment applied sciences to procedure the extra dilute water rinses which are utilized in the EDS following therapy with a reagent.

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Extra info for Evaluation of Alternative Technologies for Disposal of Liquid Wastes from the Explosive Destruction System

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Army, 2001d). K2SO4). 7See discussion of chlorodibenzodioxins in Appendix G. APPLICABILITY OF TREATMENT TECHNOLOGIES TO EDS LIQUID WASTE STREAMS in EDS neutralents compared with MMD neutralents are not likely to compromise the applicability of the process. WAO does not fully mineralize organics but instead reduces them to short-chain molecules such as acetic acid (the primary component of vinegar). Thus, effluents would need to be treated further by biotreatment, possibly at a POTW. Prior to biotreatment, toxic heavy metals in the EDS neutralent would need to be precipitated, filtered out, and stabilized for disposal in a hazardous waste landfill.

Because neutralents contain a high percentage of water, the concentrated nitric acid solutions will be diluted. This could alter the chemistry and necessitate the removal of water. Electrochemical oxidation with Ce(IV) avoids some of the deficiencies of the Ag(II) process; for example, unlike Ag, Ce does not form an insoluble salt with chloride ions. Nevertheless, like the Ag(II) process, the Ce(IV) process requires large quantities of corrosive nitric acid and gener- 25 ates large quantities of nitrogen oxides at the cathode, which must be reformed and the waste gases scrubbed.

Treating these organoarsenic compounds with hot concentrated hydrochloric acid destroys the compounds, but this reagent may be too corrosive for use in the current EDS system. Alkaline reagents like aqueous sodium hydroxide hydrolyze the As-Cl chemical bonds in these compounds, thus reducing their toxicity, but do not necessarily destroy the organoarsenic structures. For the small number of munitions containing these agents, it may be most appropriate to treat the detonation products with aqueous sodium hydroxide reagent and then destroy the neutralent in a treatment unit or facility capable of substantially reducing the toxicity, mobility, and volume of the arsenic wastes.

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