A method for treating aqueous liquid and semi-liquid wastes by solidification comprising the steps of mixing with the waste a dry water-reactive solidification agent comprising cement, a dry water absorbent material, and a powdered alkali metal silicate in a quantity sufficient to convert the mixture into a chemically and physically stable solid end product substantially insoluble in water and which contains no substantially free-standing water, and allowing the mixture to set to a sedentary mas...

Plants are used for the reduction in volume of solid, bioinjurious wastes, especially radioactive wastes, in closed sheet metal containers, which consist of a closed containment enclosure having roller conveyors and other transportation elements, a container receiving lock, a high pressure press and a container discharge lock; a compacting apparatus is characterized by a container charging lock rotatable around the vertical axis and having a hydraulic cylinder for transporting the sheet metal co...

Petroleum refinery waste stream sludges are recycled by segregating the sludges according to their oil content. Sludges of high oil content are injected into a delayed coking unit during the coking phase so that they are converted to coke and liquid coking products. High water content sludges are used to quench the coke during the quench phase of the coking cycle, with minimal increases in coke volatile matter. The process increases the capacity of the delayed coking unit to process and recycle ...

The present invention provides a method for the destruction of hazardous carbonaceous wastes comprising solids which comprises the steps of (a) gasifying said wastes and producing an intimate admixture of the gaseous products of said gasification with air, said admixture containing at least a stoichiometric amount of air, (b) passing said admixture to a plug flow combustion zone, and (c) effecting sustained and essentially complete combustion of said admixture under essentially adiabatic conditi...

Wastes, in the form of liquids, solids and slurries, are converted to a mixture of a gas and an inorganic ash by introducing the waste as a finely atomized spray into a zone heated by means of a hot gas. Contact of the spray particles with the hot gas results in drying the waste and calcining and combusting the dried waste. The process is particularly useful with wastes containing hazardous materials such as radioactive substances.

A process for the consolidation or stabilization of radioactive wastes in a glass matrix, wherein a glass smelt which has been enriched with the active material is solidified through cooling. The process is distinguished in that the maximally 1200.degree. C. hot gas smelt with the active waste within the final respository container is brought into contact prior to its cooling, at least along its surface, with a solid viscosity-increasing oxide up to at least a partial dissolution thereof. Among ...

A process is disclosed for removing hydrocarbons from oily wastes. According to the process, the oily wastes are mixed with solids and a binder and then granulated. The granules thus formed are contacted with solvent to extract hydrocarbons from the granules. Preferred solids include limestone and preferred binders include portland cement calcium sulfate and/or calcium sulfate hydrate such as plaster of Paris.

A device for collecting animal wastes comprising a harness adapted for attachment to the hind quarters of the animal and a collection bag detachably connected to the harness. The fasteners connecting the bag to the harness are of a type permitting the use of any flexible bag and in particular permit the use of inexpensive disposable plastic garbage bags. The preferred form of fastener for securing the bag comprises the loop and stud type fastener commonly used for hosiery garters.

This container system is designed in such a way that wastes which cannot be differentiated according to their effects can be stored for an indefinite period in the system which is self-contained and hence cut off from the environment, and these wastes can also be recovered at any time without polluting the environment. For this purpose this container concept is designed as a double-walled system, consisting of an inner container (2) as a casing for the waste and an outer container (1) as a prote...

Initially, putrescent waste is deposited on a surface of a disposal volume which is partially composed of putrescent waste. A living system bio-converts at least a portion of the putrescent waste in the disposal volume, transforming the putrescent waste into waste residue. While bio-conversion is occurring on a portion of the putrescent waste in the disposal volume, waste residue is excavated from the disposal volume below the surface of the disposal volume. Because the excavation takes place be...