A Process for the Extraction of Ammonia from the Sewage Waters of Towns and similar Liquids.

摘要

14,966. Schilling, R., and Kremer, C. July 4. Sewage and foul waters, treating; manures.- Ammonia is extracted from sewage water and similar fluids by allowing the clarified liquid to remain over filtering-layers of coke, slag, or the like, arranged in suitable chambers a. The liquid is admitted by pipesj, is spread by the grid z, and, after standing for about half an hour, is run off by the cock k; hot gases are then admitted by the perforated pipes c, and are drawn off with ammonia through the pipe g by the exhauster f, and are delivered to an absorbing-vessel to recover the ammonia. The heated gases are preferably produced by the combustion of the slime remaining from the clarification process so as to destroy it and to recover the nitrogen therein, and they should be so hot as to destroy all organic matter contained in the liquid remaining on the filter, which will thus be revivefied. The ashes from the slime are used as manure, and the chambers may be connected in sets so that one may be filled while another is being heated and another is standing.