Abstract: An improved method of separation of liquids from solids. Animal manure in particular must be separated in order to further process the liquid. This improved method of separation also utilizes a slanted plate clarifier in its design. This design will also provide a means of removing some of the more soluble chemicals from the liquid.

Abstract: Cavities, such as manholes of differing sizes and shapes are repaired by an apparaatus that includes an inflatable bladder enveloped by a carrier formed of a resin-impregnated fiberglass fabric. A hoist lowers the bladder and fabric into the manhole and an air blower inflates the bladder until the fabric tightly overlies the inner walls of the manhole. The resin then cures in situ. The liner so created forms a monolithic whole that is impervious to water and silt and prevents further crumbling and deterioration of the inner surfaces of the manhole. The bladder is deflated and retracted after the resin in the fabric has cured.