Clean process technology utility waste

Civilian applications are numerous, but most funding of SCWO technology has stemmed from the military s need to find a safe and effective alternative to incineration of their wastes, as well as the need to clean up mixed wastes (radioactive and hazardous organic materials) at DOE weapons facilities. For better utilization of SCWO for its application to a wide range of waste types, a better fundamental understanding of reaction media, including reaction rates, reaction mechanisms, and phase behavior of multicomponent systems is required. Such an understanding would help optimize the process conditions to minimize reactor corrosion and salt... 

Pyrolysis is the treatment of plastic waste in the presence of heat under controlled temperatures without catalysts. The pyrolysis process is an advanced conversion technology, in which the hydrocarbon content of the waste is converted into a clean, high calorific value gas from a wide variety of plastic waste. The produced gas can be utilized in gas engines, electricity generation, or in boiler applications. 

Plastics waste is found in refuse from industry and household. Its state varies from one source to the next. The scrap from polymer processing is often clean, whereas that from the building sites or municipal waste streams usually is contaminated. Depending on the type of waste and the technological possibilities, four methods of utilization of plastics waste are distinguished ... 

Treatment of more concentrated chelant wastes requires the use of a more aggressive chemistry. Kennedy demonstrated that iron and copper could be removed from EDTA by a combination of lime, NaOH, and diethyidithiocarbamate. By this process, >99.9% of the iron and copper was removed. However, only 82% of the nickel was precipitated. Samuelson described the use of this technology to treat several waste streams from operational cleaning of utility power boilers. 

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