![]() performed the first phase of an incremental decontamination demonstration with the goal of decontaminating 700 cubic yards (cy) (pilot-scale) for engineering design and cost economics information for commercial scale operations. The use of sediment washing is suitable for sediments with low to moderate contamination levels, typical of industrialized waterways. This work is more » being conducted under the auspices of the Water Resources Development Act (WRDA). Several types of treatment technologies suitable for use with varying levels of sediment contamination have been selected based on the results of bench- and pilot-scale tests. The components of the train include: (1) dredging and preliminary physical processing (materials handling), (2) decontamination treatment, (3) beneficial use, and (4) public outreach. The authors describe here a regional contaminated sediment decontamination program that is being implemented to meet the needs of the Port. « lessĭecontamination and beneficial use of dredged material is a component of a comprehensive Dredged Material Management Plan for the Port of New York and New Jersey. These tests indicated that metal items contaminated with TNT and treated for six hours at a minimum temperature of 500F are not characteristically hazardous and are appropriate for disposal or, potentially, for resale as scrap. Previous pilot tests and studies completed by Weston in more » 1990 (1), have shown that metal components can be decontaminated by heating the items with a circulating hot gas, which volatilizes the explosives and destroys them in a high temperature thermal oxidizer. In addition, many metal munition items, such as projectiles and mine casings, from which explosives have been removed (washout, meltout, or augered out) require additional decontamination (to 5X standards) in order to dispose of them properly. This contamination must be removed before any of this can be accomplished. This residual contamination prevents the maintenance and repair of the equipment as well as its reuse or disposal as scrap. The manufacture, handling, and loading of explosives at Army ammunition plants contaminates process equipment (such as pumps, tanks, and piping) with explosive residue. A general discussion of the continuous emissions monitoring (CEM) system used to support operations is also provided. This manual provides equipment descriptions, functional descriptions of the more » system control loops, startup and shutdown procedures, loading and unloading procedures, and maintenance specifically related to the HOD furnace and thermal oxidizer. This Operations and Maintenance Manual reflects the final system configuration of the transportable HOD equipment and the procedures for operating and maintaining that equipment. System modifications and enhancements were made to the original %as delivered equipment between the demonstration and validation test periods to optimize system efficiencies. The HOD equipment was delivered in March 1995, demonstrated in December 1995, and validated between January and March 1996. Weston, Inc., to design, procure, demonstrate, and validate transportable hot gas decontamination (HOD) equipment. ![]() In 1994, the United States Army Environmental Center contracted Roy F. Various equipment modifications were made to the `as delivered` equipment to optimize system operated equipment design which was supplied to USAEC under contact DACA 31-91-D-0079, Delivery order Number 10, the demonstration test and the equipment modifications completed to optimize systems = , System trials proved the hot-gas equipment to he fully functional and capable of maintaining anticipated treatment temperatures. The 1 week demonstration test period was conducted. The resultant equipment design was delivered to USAEC`s test site at the Alabama Army Ammunition Plant (ALAAP) located in Alpine, Alabama for demonstration testing. to design and procure system equipment-specifically for the treatment of explosives-contaminated materials by the hot-gas decontamination process. As a result USAEC contacted Roy E Weston, Inc. The results from these investigations and studies verified the effectiveness of the hot-gas technology for treating clinical agent and explosives, however post-test recommendations indicated that equipment designed specifically for the hot-gas decontamination concept would improve system efficiencies and process optimization goals. The United States Army Environmental Center (USAEC) has been conducting laboratory investigations and pilot-sca1e studies of the hot-gas decontamination process since 1975.
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