| 摘要 |
<p>1. Process for separating gaseous, volatile and/or liquid impurities from waste gases from intense animal farming buildings, animal body utilization plants, industrial sewage and processing plants, as well as fermenting and rotting processes in the form of hydrogen sulphide, ammonia, ammonium compounds, thiols or aliphatic cycloaliphatic or aromatic hydrocarbons, which can optionally also be halogenated, with the aid of an adsorbent forming a heap of approximately constant filling height, whose particles pass in the manner of a migrating lager from top to bottom through a container through which the waste gas from bottom to top, in that via a conveying mechanism the adsorbent supplied to the container from above by means of mechanical feed-in and discharge means and which is removed at the base and optionally after admixing fresh adsorbent is supplied to the container again from above, the adsorbent being constituted by an at least partly, but not yet completely rotted compost, which is biologically highly active and obtained from a biological rotting process for organic waste and/or sewage sludge, characterized in that the compost has a loose, friable structure with a porosity of 20 to 50%, preferably 30 to 40% and a water content of 40 to 60% by weight and correspondingly a dry substance content of 60 to 40% by weight, a pH-value (in water) of 6 to 7.5 with fungus comprising at least the species Mucor, bacteria comprising at least the species Actinomycates and microbes comprising at least mites, Collemboles and nematodes and that the waste gases supplied to the container at its base by means of a pipe system using a pressure fan after flowing through the adsorbent are sucked out through an opening by means of a suction fan in such a way that a vacuum formed above the heap does not exceed 0.07 bar, the speeds of the suction and/or pressure fan being regulated for the purpose of setting the residence time of the waste gases to be purified in the adsorbent so that in the case of gas velocities of 2 to 5, preferably 2 to 10 m/min, there are residence times of the waste gases in the adsorbent of at least 50 sec.</p> |
