Abstract: A method of removing contaminants from an aqueous waste stream comprising feeding a contaminated aqueous liquid to the lower internal space of a feed tank and cooling the liquid in the tank to a temperature which results in precipitation of at least part of the contaminants; withdrawing the precipitated contaminants from the feed tank lower internal space; withdrawing aqueous liquid from the feed tank upper internal space and delivering it to a freezer; cooling the aqueous liquid in the freezer to convert at least part of the liquid to ice to produce an aqueous ice slurry; feeding aqueous ice slurry from the freezer to an aqueous ice slurry receiver; withdrawing aqueous ice slurry from the aqueous ice slurry receiver and recycling some of it to the freezer and some of it to the lower internal space of the feed tank; withdrawing aqueous ice slurry from the aqueous ice slurry receiver and delivering it to a central space of a separator-precipitate vessel; withdrawing aqueous ice slurry from the central space of

Abstract: A method of incinerating all kinds of wastes such as municipal waste, waste plastics, industrial waste, various kinds of waste slurries and waste liquid, etc. or fuels such as coal, oil cokes and bark, etc. using a fluidized bed type incinerator which employs a granular material as a fluidizing medium, said granular material comprising TiO.sub.2 or Al.sub.2 O.sub.3, particularly anatase-type TiO.sub.2 or .alpha.-Al.sub.2 O.sub.3, as the primary component thereof.

Abstract: A forced jet convection oven is utilized to practice a vacuum bagging process for the production of thermoplastic composite laminates containing reinforcing fiber. The oven comprises a support suitable for supporting a panel wherein said support means is positioned in the oven with the upper surface of the support means being spaced apart from the oven ceiling to define a panel-receiving chamber between the upper surface of the support means and the oven ceiling, a first manifold means having a first multiplicity of outlets directed toward the upper surface of the support means wherein said first manifold means is positioned between the upper surface of the support means and the oven ceiling; and a second manifold means having a second multiplicity of outlets directed toward the upper surface of the support means wherein said second manifold means is positioned between the upper surface of the support means and the oven floor.