Abstract: A method of removing ammonia from a wastewater containing free and fixed ammonia said process comprising the steps of: distilling the wastewater to remove the free ammonia; treating the distilled wastewater with soda ash to decompose the fixed ammonia; and distilling the treated wastewater to remove the decomposed ammonia.An apparatus for removing ammonia from a wastewater containing free and fixed ammonia comprising: an ammonia still for removing free and fixed ammonia; a source of soda ash solution; and means for feeding the soda ash solution from said soda ash source to the ammonia still to decompose the fixed ammonia.

Abstract: Method and apparatus for extruding incandescent coke from a coke oven and for quenching the coke prior to transport thereof from the point where extruded. The method and apparatus include enhanced air pollutant emission control characteristics. The apparatus includes an inverted, truncated-pyramid container cradled within the frame of a vehicle similar to that used to transport molten metal. Prior to coke extrusion the vehicle permits indexing of the container under the plane through which the extruded coke falls so as to receive all of such extruded coke. While indexed and immobile, the container is adapted to mate with a correspondingly indexed hood having emission control means adapted to be operable during both the extrusion and quenching of the coke at the indexed position of the container/hood. Use of the present invention, in comparison to the prior art, further minimizes the escape of uncleaned, air pollutant-emitting fume, both by virtue of combustion suppression and exhaust gas cleaning.

Abstract: A method for removing biodegradable compounds selected from the group comprising: phenolics, free and fixed ammonia compounds, thiosulfates, cyanides, thiocyanates, sulfides and the like from a feed wastewater. The method comprises the steps of treating the feed wastewater by adding soda ash thereto; and further treating the wastewater by means of an activated sludge treatment in a sludge reactor to reduce the level of biodegradable compounds in the wastewater.A method for removing biodegradable compounds selected from the group comprising phenolics, free and fixed ammonia compounds, thiosulfates, cyanides, thiocyanates, sulfides and mixtures thereof from a feed wastewater comprising the steps of: treating the feed wastewater with an inorganic carbon source; and further treating the wastewater by means of a single-stage activated sludge treatment in a sludge reactor to reduce the level of said biodegradable compounds in the wastewater.