Process for the biological purification of waste air streams

Details Process for the biological purification of waste air streams Process for the biological purification of waste air streams

1992-09-04

1993-08-03

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423DIG17, 55 90, 55 97, 210615, B01D 5300

Patent

active

052326764

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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