Liquid organic wastes

Smith and Raptis53 have suggested using the deep-well environment as a wet-oxidation reactor for liquid organic wastes. This process, however, does not involve deep-well injection of wastes but rather uses temperatures and pressures in the subsurface to increase the oxidation rate of organic wastes, which are then returned to the surface. 

Smith J.M. and Raptis, T.J., Supercritical deep well wet oxidation of liquid organic wastes, in Proc. Int. Symp. Subsurface Injection of Liquid Wastes, New Orleans, National Water Well Association, Dublin, OH, 1986, pp. 715-732. 

The electric infrared incineration technology is a mobile thermal processing system that is suitable for soils or sediments contaminated with organic compounds, polychlorinated biphenyls (PCBs), and metals. Liquid organic wastes can be treated after mixing with sand or soil. Electrically powered silicon carbide rods heat organic wastes to combustion temperature while any remaining combustibles are incinerated in an afterburner. 

Weatherly, Inc., developed the supercritical water oxidation (SCWO) system to treat liquid organic wastes. In February, 1999, Chematur Engineering acquired the exclusive rights to the... 

INCINERATION. Disposal of solid and liquid organic waste materials by burning at temperatures 1200 to ISOCC. This method is approved by the EPA for use on very toxic organic chemicals and chemical wastes. Use of specially equipped incinerator ships for burning chemical wastes at sea has become common place. 

The most important liquid wastes are the high-level effluents, containing fission products from fuel reprocessing. They contain >99% of the fission products in the fuel with small quantities of U and Pu. Medium-level liquid waste has an activity of 4 GBq/L and results from various steps in fuel reprocessing. Low-level (<0.1GBq/m3) waste is treated or concentrated. Liquid organic waste is usually incinerated or chemically destroyed. 

Containers for solid chemical waste disposal Containers for liquid organic waste disposal Corks... 

The extraction cycles lead to the production of various aqueous and organic waste solutions, mainly from solvent clean-up and washing. Some of the aqueous LLW solutions may be released directly into the environment if their activity is low enough. Others are decontaminated by precipitation, coprecipitation, ion exchange or sorption procedures. The general tendency in handling liquid wastes is to reduce the volume as far as possible and to transform LLW into MLW, as already mentioned. Liquid organic wastes are either incinerated or the radionuclides contained therein are separated by precipitation or other procedures. 

The liquid organic waste consists of spent TBP diluent mixtures originating from the organic solvent clean-up circuits and from the diluent (keros e) washings of the aqueous streams (to remove entrained solvent) in addition to degradation products of TBP and die diluent it contains small amounts of actinides (mainly U and Pu) and FP (mainly Ru, Zr, and Nb). 

Another problem to consider, especially when disposing of liquid organic wastes, is the possibility of reactivity of noncompatible mixtures. As an example, mixing of ethers with strong oxidants, such as ethyl ether with perchloric acid, is likely to produce a violent explosion. 

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