Method and apparatus for the purification of waste air containin

Details Method and apparatus for the purification of waste air containin Method and apparatus for the purification of waste air containin

1987-03-06

1988-02-09

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 94, 55222, 55233, 210615, 210151, 435262, 435266, B01D 5314

Patent

active

047239689

ABSTRACT:
A method and an apparatus for the purification of waste air containing biologically decomposing impurities. The waste water is conducted through an absorption tower in which the impurities are absorbed by washing liquid containing an activated sludge. Subsequently, the impurities are biologically decomposed in an activated sludge basin by the microorganisms of the activated sludge. To ensure that the residual amount of washing liquid to be removed is small and only a small amount of biological excess sludge is produced even if large amounts of impurities must be decomposed, while the activated sludge basin remains relatively small, the waste air is subjected to a preliminary purification in at least two successive stages by means of a highly polluted washing liquid. Subsequently, the waste air is subjected to an after purification by means of an only lightly polluted washing liquid. The two different washing liquids are then conducted in a cascade-like manner through separate activated sludge basins. Only the washing liquid from the least polluted activated sludge basin is removed and subsequently purified.

REFERENCES:
patent: 3828525 (1974-08-01), Copa et al.
patent: 4225381 (1980-09-01), Ishikawa et al.
patent: 4544381 (1985-10-01), Schmidt
patent: 4662900 (1987-05-01), Ottengraf

Affiliated with

Also associated with

Rating

Method and apparatus for the purification of waste air containin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the purification of waste air containin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the purification of waste air containin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1282110