Technique and device for simultaneously removing malodor of multiple gas mixture

Abstract

The invention discloses an odor biological treatment process and a device in environmental engineering, meanwhile, the invention discloses a process for removing a plurality of mixed obnoxious gases and a device, which is characterized in that a trickling bio-filter A is arranged, the gas to be treated is pressurized by a draught fan to be delivered to an air pretreatment device, then the gas enters into a gas distributor at the lower part of the trickling bio-filter A, thereby carrying out the reactions of filtration, adsorption, degrading and biochemical when passing through a biological carrier and removing H2S; a trickling bio-filter B is arranged, the gas comes from the top of the trickling bio-filter A and enters into the trickling bio-filter B from the bottom of the trickling bio-filter A, which can pass through the biological carrier to remove volatile organic compounding exhaust gases; the trickling bio-filter A and the trickling bio-filter B are respectively provided with a spraying liquid A and a spraying liquid B, and the spraying liquid A and the spraying liquid B enter into the biological carrier from top to down. The process and the device have the advantages that the obnoxious gases are removed with different grades; the device is flexible and convenient to manufacture, assembly and disassembly with low cost; the trickling bio-filter B is provided with a multi-grade biological carrier; the trickling bio-filter A and the trickling bio-filter B are respectively sprayed with the spraying liquid A, the spraying liquid B and nutrient fluid thereof, which is convenient to operate, easy to adjust and are capable of removing a plurality of obnoxious gases with good treatment effect and strong ability against load impacts.

Description

technical field [0001] The invention relates to an odor biological treatment process and device in environmental engineering. Background technique [0002] Odor pollution problems often occur in the production process of petrochemical, biopharmaceutical, leather, and paint companies and in sewage sludge treatment. In addition, urban waste landfills and polluted rivers also continue to emit some putrid odors, becoming one of the important sources of pollution in the city. The polluted air is not only foul smelling, irritating, corrosive, flammable and explosive, but also makes people feel unhappy and disgusting, affects people's physical and mental health, and even endangers people's lives. The environmental protection department pays more and more attention to the control and treatment of stench, but the operation and management costs of the existing stench treatment methods and facilities are relatively expensive. Therefore, the development of deodorization equipment with...

AI Technical Summary

Problems solved by technology

There are also some reports on the removal of VOCs, but there are few studies on the simultaneous removal of hydrogen sulfide and volatile organic pollutants, and the technology is not mature

[0007] At present, in the development of most of the technologies for controlling odor by biological methods, a single component (or a combination of several simple components) is used as the treatment object, and the change of the gas load is also very orderly and stable, while in actual engineering , there are few technical achievements in abnormal load airflow and multi-component complex gas mixture

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