Deodorizing device and deodorizing method of bio-trickling filtration tower

Abstract

The invention discloses a deodorizing device and a deodorizing method of a bio-trickling filtration tower. In order to solve the problems that the bio-trickling filtration tower is high in resistance, instable in deodorizing rate, short in operating period and required to be back-flushed periodically because the bio-trickling filtration tower is blocked by dead micro-organisms in the operating process of the bio-trickling filtration tower, a liquid collector and a gas distributor are arranged on the bio-trickling filtration tower, so the dead micro-organisms of upper and middle sections of packing cannot be taken to the lower part of the bio-trickling filtration tower, the blocking of a packing layer at the lower part of the bio-trickling filtration tower is avoided, the packing layer at the lower part of the bio-trickling filtration tower cannot be over-flushed by circulating liquid, and the number of surface bio-membranes of the lower-layer packing is increased. After the deodorizing device continuously operates in a petrifaction sewage plant, an experimental result shows that: the resistance of the bio-trickling filtration tower is less than 2,000 Pascal per metre (Pa / m), an operating period is more than two years, back-flushing is not required, and the deodorizing rate is stable and directly meets a national discharge standard.

Description

technical field [0001] The present invention relates to a malodorous gas biological treatment device and method, in particular to a biological trickling filter tower for removing malodorous and organic gases in complex malodorous gases through absorption and biodegradation, and using the biological trickling filter tower to process malodorous gas method of deodorization. Background technique [0002] Biological trickling filter, also called fixed-film biological scrubber, has a structure similar to that of a biological filter, except that a spray system is installed on the top, and the continuously sprayed liquid drips down through the surface of the porous packing, and the spray liquid The medium often contains the nutrients needed for microbial growth, and thus controls the humidity and pH value in the equipment. The method of continuous liquid circulation makes most of the pollutants dissolve in the liquid. In the bio-trickling filter tower, fillers attached to microorga...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a biological trickling filter tower and deodorization method for processing complex malodorous gases, so as to solve the problem that the dead microorganisms in the upper layer are brought to the lower part of the biological trickling filter tower by the circulating liquid and block the packing layer in the lower part of the biological trickling filter tower. Prevent the circulating fluid from spraying in sections from excessively scouring the lower packing layer of the biological trickling filter tower, thereby increasing the amount of biofilm on the surface of the lower packing layer; the biological trickling filter tower of the present invention has stable operation, low resistance, strong impact resistance, and does not need to be backwashed. Stable odor gas removal, long operation period

Images