Destruction and removal efficiency

DRE Destruction and removal efficiency SMART Save money and reduce toxics... 

SW-846, is used to measure emissions of semivolatile principal organic constituents. Method 0010 is designed to determine destruction and removal efficiency (DRE) of POHCs from incineration systems. The method involves a modification of the EPA Method 5 sampling train and may be used to determine particulate emission rates from stationary sources. The method is applied to semivolatile compounds, including polychlorinated biphenyls (PCBs), chlorinated dibenzodioxins and dibenzofurans, polycyclic organic matter, and other semivolatile organic compounds. 

Emissions from hazardous waste combustors are regulated under two statutory authorities RCRA and the CAA. The MACT standards set emission limitations for dioxins, furans, metals, particulate matter, total chlorine, hydrocarbons/carbon monoxide, and destruction and removal efficiency (DRE) for organics. Once a facility has demonstrated compliance with the MACT standards by conducting its comprehensive performance test (CPT) and submitting its notification of compliance (NOC), it is no longer subject to the RCRA emission requirements with a few exceptions. RCRA-permitted facilities, however, must continue to comply with their permitted emissions requirements until they obtain modifications to remove any duplicative emissions conditions from their RCRA... 

To obtain a permit, an owner/operator must demonstrate that emission levels set for various hazardous organic constituents are not exceeded. U.S. EPA s principal measure of incinerator performance is its destruction and removal efficiency (DRE). A 99.99% DRE means that one molecule of an organic compound is released to the air for every 10,000 molecules entering the incinerator. A 99.9999% DRE means that one molecule of an organic compound is released to the air for every 1 million molecules entering the incinerator. 

Limited data is available on the concentration of volatile organic compounds, semi-volatile organic compounds (SVOCs), and polycyclic aromatic hydrocarbons (PAHs) from gasification processes. The data that is available indicate that VOCs, SVOCs, and PAHs are either non-detectable in flue gas streams from IGCC process or, in some cases where they were detected, they are at extremely low levels (on the order of parts per billion and lower). The analysis of syngas also indicates greater than 99.99 percent chlorobenzene and hexachlo-robenzene destruction and removal efficiencies and part per billion or less concentration of selected PAHs and VOCs.9-14... 

It destroys chemical agent to a 99.9999 percent destruction and removal efficiency (DRE) and energetic materials to a 99.999 DRE. 

Validate the ability of the SILVER II unit operation to achieve a destruction and removal efficiency (DRE) of 99.999 percent for Composition B—cyclotrimethylenetrinitramine (RDX) and trinitrotoluene (TNT). 

First, the incinerator must achieve a destruction and removal efficiency (DRE) of at least 99.99% for each of the designated Appendix VIII chemicals present in the waste feed. In other words, 0.01% of the respective compound in the waste feed can be emitted in the incinerator stack gases. The specific Appendix VIII chemicals evaluated are selected by EPA from those found in the hazardous waste at reasonable concentrations and are termed principal organic hazardous constituents (POHCs). 

Is capable of high destruction and removal efficiencies (DREs). 

In a 1996 report compiled by EANE, cost estimates were prepared for seven innovative off-gas treatment technologies as well as for three off-gas technologies currently in use. Results of the estimate for SDP are summarized in Table 1. It was estimated that SDP was most cost effective in treating high concentrations of specific contaminants at low flow rates. It was found that cost was independent of VOC concentration but was dependent on the desired destruction and removal efficiency (DRE) and the flow rate. Energy costs drop for gas matrices other than air (e.g., off-gas from a pyrolizer or low-temperature desorber or gas streams carried by an inert gas such as argon) (D130756, p. 21). 

Destruction and removal efficiencies (DREs) for contaminants are high and consistent emissions of harmful by-products are minimal. 

Achieves destruction and removal efficiencies of greater than 99.99%. 

TT states that the advantages of FTO technology include the lack of an open flame, the high destruction and removal efficiencies that can be achieved, low nitrogen emissions, and the range of process flow rates that are acceptable for treatment. 

SQI systems can achieve destruction and removal efficiencies (DREs) of up to 99.9999%. System can treat wastes containing organic contaminants, heavy metals, and some inorganic compounds. 

RCRA incinerator regulations include administrative as well as performance standards. Administrative standards include procedures for waste analysis, inspection of equipment, monitoring, and facility security. Steps needed to meet administrative standards are outlined in the permit application performance standards are demonstrated during a trial bum. Trial bum operating conditions are included in the permit to assure ongoing compliance with the performance standards. Performance standards include destruction and removal efficiency (DRE), particulate emissions limits, products of incomplete combustion emission limits, metal emission limits, and HC1 and Cl emission limits (see Exhaust control, industrial). 

Finding 2-1. Trial bum results from the 1999 JACADS tests confirmed the required destruction and removal efficiency of 99.9999 percent when 4.2-inch mortar projectiles filled with mustard agent were incinerated through the metal parts furnace at a feed rate of 96 rounds per batch. Subsequently, almost 95,000 mustard projectiles were successfully destroyed in the JACADS MPF by mid-1999. 

The committee was also asked to evaluate the trial burn practices at the incineration-based facilities and compare them with similar practices in industry. Each Chemical Materials Agency (CMA) incineration facility has several types of incinerators and each has been required, by permit, to carry out a surrogate burn on all of its furnaces after start-up and before feeding any agent. A surrogate trial burn is required to demonstrate the ability of the unit to achieve a 99.9999 percent ( six nines ) destruction and removal efficiency and unit operability. They have then been required to carry out a trial burn with each agent. After the trial burn, the feed rates are reduced to 50 percent until the trial burn data... 

NOTE DFS, deactivation furnace system DRE, destruction and removal efficiency LIC, liquid incinerator and MPF, metal parts furnace. 

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