Incineration solvent wastes

Off-site waste disposal methods involve the transfer of solvent wastes to an alternative location before their treatment, reuse, or release into the environment. One such method commonly used both on- and offsite is incineration. Solvent wastes are often incinerated, especially when they contain toxic substances and pose long-term EHS risks if directly released. The process of waste incineration releases a large amount of CO2 into the environment, but often the heat generated from this process may be recovered for use within a plant. When contaminated... 

If arrangements for incineration of waste solvent and disposal of solid chemical waste by licensed contract disposal services are nol in place, a list of providers of such services should be available from a state or local office of environmental protection. 

J.F. Mullen (Dorr-Ohver luc.) reports that fluidized bed incinerators have been used for municipal sludge and industrial waste incineration since the early 1960s for a variety of wastes (petroleum tank bottoms, sludge from pharmaceutical, pulp and paper, and nylon manufacturing operations), waste plastics, waste oils, and solvents. Fluid beds were first considered for incinerating hazardous wastes in the 1980s. 

The degree of hazard approach, on the face of it, may offer a similar basis for prescribing a sort of intensity of need for management. Beyond this, it is also apparent that, given the choice of available management options for a given waste stream (such as land treatment, land burial, incineration, chemical fixation, etc.) there can be technical decisions rendered as to which of these options are suitable for the waste material (e.g., a chlorinated hydrocarbon solvent waste), and which are less suitable, or even unacceptable. 

MEK is burned in a chemical incinerator equipped with an afterburner and scrubber. Land disposal concentration of MEK in wastewater should not exceed 0.05 ppm, and that in TCLP extract of spent solvent wastes,... 

Incineration to waste provides a last resort for environmentally acceptable disposal. Since this has often been necessary for burning used chlorinated solvent residue, the incinerator needs to be equipped with sophisticated scrubbing facilities. 

Chlorine is also harmful in most cases in which catalytic incineration rather than thermal incineration is used. It clearly makes Httle sense in the removal of VOC and the process odours sometimes associated with them if the organic molecules are recaptured from the air by carbon adsorption, only for the material that is removed from the bed during regeneration to be incinerated to waste. Thermal or catalytic incineration of the contaminated air is an effective way of cleaning it, and the solvent vapour present in the air makes an appreciable contribution to achieving the temperatures required. 

EPA and ICF Consulting Associates (1990) Solvent Waste Reduction, Noyes Data Corporation, Park Ridge, NJ. Survey of the US requirements on discharge of solvents and the various options, such as reuse, recycling, incineration, cement kUn fuel available. Applicable mostly to the small operator with in-house facilities. 

The wide spread detection of dissolved organic compounds in groundwater is a major environmental concern, and has led to greater emphasis on incineration and waste minimization when compared with the land disposal of solvent-containing wastes. The movement and environmental fate of dissolved organic solvents from point sources can be approximated by the use of computer-assisted, solute-transport models. These models require information about the composition of leachate plumes, and site-specific hydrogeological and chemical... 

Incineration is an expensive disposal option. The technique involves the use of a purpose built plant that operates at high temperatures. Incinerators can be used to destroy highly toxic waste and flammable solvents. The process needs a support fuel (which can be the waste solvent) to destroy solid and non-combustible waste. Some companies send their solvent waste to specialist disposal companies who produce a solvent blend, which is suitable for use as a fuel in a cement works. In this case, the composition of the blended solvent must be strictly controlled to ensure that the cement works does not exceed its emission limits. 

Incineration. Gases sufftciendy concentrated to support combustion are burned in waste-heat boilers, dares, or used for fuel. Typical pollutants treated by incineration are hydrocarbons, other organic solvents and blowdown gases, H2S, HCN, CO, H2, NH, and mercaptans. VOC... 

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