Process for the biological purification of waste air streams
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United States of America Patent
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Aug 3, 1993
Issued Date -
N/A
app pub date -
Sep 4, 1992
filing date -
Aug 10, 1990
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Abstract
In a process for the biological elimination of halogen- and sulfur-containing gaseous pollutants from a waste air stream, the waste air stream is passed through an intermittently moistened trickling filter tower. In a preferred variant of the process, individual sections of the surface of the trickling filter are subjected to intermittent phase-displaced moistening. Cyclic moistening of the trickling filter sections can be achieved in this way. The volume-time yield in the biological purification of gas streams can be considerably improved by this process.
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