Biochemical coupling deodorizing technique and apparatus with anti-blocking and dredging functions

The invention discloses a biochemical coupling deodorizing technique and apparatus with anti-blocking and dredging functions. The apparatus is characterized in that a spraying layer is arranged abovea filler layer in a deodorizing column, an online backflushing device and a liquid-collecting gas distribution layer are arranged below the filler layer, the upper portion of the deodorizing column isprovided with a demisting layer and an exhaust port; the bottom of the deodorizing column is fitted with a dredging port, a drain port, an intake port and a regular dredging mechanism; the dredging port and the drain port are connected with a sewage station aerator; the sewage station aerator is connected sequentially with a PH adjusting tank, a front pulp-residue filter and a spray pump; the spray pump is connected with the spraying layer. The technique is characterized in that liquid collection points and spray liquid PH adjusting mode are selected reasonably; the front pulp-residue filtering, filler backflushing an