Biological deodorization filler and trickling filter for removing odor of landfill leachate by using filler

Abstract

The invention discloses a biological deodorization filler and a trickling filter for removing odor of landfill leachate by using the filler. The filler comprises activated carbon loaded polyurethane and modified polypropylene; the trickling filter comprises a tower body, a purified gas outlet formed in the top of the tower body, a filler filling area arranged in the middle of the tower body, an odor inlet, a spraying system, a circulating liquid pool arranged at the lower part of the tower body, and a nutrient solution pool arranged at one side of the tower body; the odor inlet is formed in the side wall of the tower body; and a space for odor circulation is reserved between the upper part of the liquid level of the circulating liquid pool and the filler filling area. And the filler has stable deodorization efficiency. The biological deodorization filler has the advantages of large surface area, good hydrophilic moisturizing performance, strong acid resistance, corrosion resistance andcertain mechanical strength. The filler improves the capacity of a biological film in a reactor and increases the effective reaction area of pollutants and the biological film, so that the treatmentcapacity and buffer capacity of the bio-trickling filter and the volume load of the whole system are influenced, and finally, the purification effect of the bio-trickling filter for removing stink pollutants is improved.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a biological deodorization filler and a trickling tower using the filler to remove the stench of landfill leachate. Background technique [0002] According to the process of landfill leachate treatment, the malodorous gas in the landfill leachate treatment plant comes from the leachate treatment system and the sludge treatment system. The odor in the sewage treatment system mainly comes from the water inlet head, pretreatment, primary treatment, filter backwash liquid, sludge treatment supernatant, etc. The agitation and oxygenation of the aeration tank will also produce some odor. The source of odor in the sludge treatment system is mainly distributed in the process of sludge concentration, sludge dehydration after anaerobic digestion, sludge stacking and external transportation. [0003] The substances that produce odor during the treatment of landfill leachate are...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a biological deodorization filler and a trickling filter tower using the filler to remove the stench of landfill leachate. It is necessary to solve the problem of poor processing capacity of the biological trickling filter tower, small filler surface area, limited hydrophilic and moisturizing performance, and resistance to strong acids and corrosion. , low mechanical strength, small porosity, long start-up time, large floor area, low impact resistance and other technical problems in the existing biological deodorization technology

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