Abstract: Disclosed is a method for removing inorganic acid-forming constituents from a gas stream contaminated therewith (e.g. high sulfur coal effluent). Such removal is accomplished by passing the gas stream through an active composting biodegradable organic waste held under thermophilic bacteria-phase digestion conditions. Also disclosed is a comprehensive composting treatment site which desirably employs a windrowing composting technique and is suitably adapted to be operated with the gas stream scrubbing process disclosed herein.

Abstract: Windrowing apparatus for laterally transferring an elongate row of waste material wherein a windrow conveyor is supported for movement by three pivotally mounted and freely rotatable wheels. The apparatus may be coupled or decoupled from a conventional front end loader and the wheels are so spaced and positioned as to permit the windrow conveyor to confront a row of waste while remaining protected from "climbing up" on the waste material. Considerably improved flexibility in the operation of a windrowing facility is effected with the apparatus.