Profile: Castle Environmental is a supplier of collection, treatment, disposal, and recycling services for hazardous & non-hazardous wastes. We specialize in the collection and safe disposal of a wide range of industrial & commercial chemical wastes. Subjects we cover are listed as corrosive solids & liquids, oxidizing solids, flammable material, contaminated packaging, metal recovery, incinerator ash, sludges & effluent, laboratory smalls, and oil recycling. We offer a broad suite of waste treatment solutions including physico-chemical treatment, separation phase, metals removal & recovery, incinerator ash conditioning, and acid & alkali neutralization.