Hazardous waste eliminate

The main objectives of RCRA ate to protect pubHc health and the environment and to conserve natural resources. The act requires EPA to develop and adininistet the following programs soHd waste disposal practices providing acceptable protection levels for pubHc health and the environment transportation, storage, treatment, and disposal of hazardous wastes practices that eliminate or minimize hazards to human health and the environment the use of resource conservation and recovery whenever technically and economically feasible and federal, state, and local programs to achieve these objectives. 

Reduce or eliminate the generation of hazardous waste as expeditiously as possible... 

Most of the occurrences mentioned above maybe related to the location of tlie plant. Natural hazards, waste disposal liazards, and avoidance of congested areas, particularly tliose with inadequate emergency facilities, may eliminate or minimize the potential hazards of the phuit itself. It is important to set an efficient and appropriate environment for the plant site, as was discussed in Chapter 5. 

Anand et al. 1987). The authors hypothesized that the ocular effects associated with endosulfan may be a result of prolonged hypertension (although no data on blood pressure were presented, and there is no other information to indicate that chronically administered endosulfan induces hypertension) or an endosulfan-induced vitamin A deficiency (which was observed in this study). Although the rabbit may represent a uniquely sensitive species, the possibility that long-term exposure of persons at hazardous waste sites to endosulfan may result in adverse effects on ocular tissues cannot be eliminated. 

A number of site-specific factors must first be evaluated. Including (1) the chemical characteristics and amount of hazardous waste, (2) the potential for release to the environment, (3) the sensitivity of the particular environment to the hazardous waste, (4) the proximity of the hazardous waste to humans, and (5) Its potential effect on human health. Then the environmental engineer must decide If a field Investigation of the site Is necessary, whether a feasibility study for remedial action Is required, what remedial action Is required to mitigate. If not eliminate, the contamination, and finally, what monitoring plan will enable the efficacy of the remedial action to be evaluated. 

The public was outraged. It did not matter whether the pollution came from a chemical factory, power utilities, mines, petroleum, automobiles, or semiconductors the chemical industry s reputation was in free-fall. In 1990, the U.S. Congress established the Super Fund, requiring industry to pay for cleaning up hazardous waste. Major chemical manufacturers banded together in a voluntary effort to reduce factory emissions to almost zero and to police themselves. At the opposite extreme, some environmentalists called for the elimination of all toxic substances. 

In June of 2003, the U.S. Army unearthed 113 bacteria-containing vials, including live strains of brucellosis and non-virulent anthrax, during excavation of its Fort Detrick site to eliminate toxic chemicals and hazardous waste. (Credit The Council for Responsible Genetics)... 

Evidence further suggests that male rats eliminate disulfoton at a faster rate than females. This difference may be due to differences in absorption, metabolism, retention, excretion, or a combination of factors. The metabolic pathways of disulfoton are relatively well understood based on data from animal studies (Bull 1965 Lee et al. 1985 March et al. 1957 Puhl and Fredrickson 1975). Similar metabolites have been detected in the urine and tissues from humans exposed to disulfoton (Brokopp et al. 1981 Yashiki et al. 1990). One study suggests that a greater percentage of disulfoton sulfoxide is oxidized to demeton S-sulfoxide, rather than disulfoton sulfone to form demeton S-sulfone (Bull 1965). Additional studies in animals, designed to measure the rate and extent of absorption, distribution, and excretion of disulfoton after inhalation or dermal exposure would be useful for predicting the toxicokinetics of disulfoton in humans at an occupational or hazardous waste site. 

Johanson, J. G. Yosim, S. J. Kellogg, L. G. Sudar, S. "Elimination of Hazardous Wastes by the Molten Salt Destruction Process," Proc. 8th Annu. Res. Symp. Incineration and Treatment of Hazardous Waste, EPA-600/9-83-003,... 

Table 1 gives a cost comparison of asphaltic metals stabilization (AMS) versus hazardous waste landfill disposal (HWLD). The AMS eliminated 173.00/ton in state and county taxes. 

Eliminates costs associated with hazardous waste storage, treatment, and disposal the hazardous waste is either reclassified or deregulated as nonhazardous. 

The normal cost for treatment of soils is under 100 per ton treated. The vendor claims that this is less expensive than excavation and hauhng and eliminates the need for hazardous waste disposal and the associated liabihty (personal communication, James Roma, KEECO, 9/97). 

Abatement (technology) Various processes and methods (e.g., incinerators) designed to eliminate or reduce the amount of hazardous waste, environmental emissions, or effluents from a facility. 

Unexpected additional benefits include a 30% drop in rejects due to the uniform, consistent surfaces produced, and the elimination of a hand-polishing step that had previously been required. The per-part production cost has remained approximately the same, although the savings in hazardous waste disposal costs has been significant. 

The salt baths in some nitriding and cyaniding processes also constitute hazardous wastes when spent. Nitriding and cyaniding baths for example, contain sodium and potassium cyanide and cyanate. Implementation of gas nitriding eliminates this waste stream. Gas nitriding employs ammonia gas to supply the nitrogen, and produces no hazardous waste stream. 

The first option is to eliminate the generation of the reactive desulfurization slag by substituting calcium carbide with some other material. A few large foundry companies have made major advancements in new desulfurization technologies over the past years. One such process involves the use of a mixture of calcium oxide, calcium fluoride, and two other materials. One foundry reports that, not only is the product quality satisfactory, but the plant has eliminated the generation of a major problem hazardous waste, and the economics of the process are actually better than calcium carbide desulfurization. 

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