A combined biological filler of Raschig rings and porous media

Abstract

The invention discloses a Raschig ring and porous medium combined biologic filling which is composed of two inert biologic fillings. The Raschig ring and porous medium combined biologic filling comprises a Raschig ring which is internally and fixedly filled with a porous medium. In a preferred scheme, the inner wall of the tubular Raschig ring is provided with a sawtooth fixing bar, and the outer wall of the Raschig ring is provided with a plurality of strip-shaped grooves along an axial direction, so that specific surface area and microorganism adhesive force of the Raschig ring are increased greatly, and uniform flow of a liquid-state fluid is facilitated. The Raschig ring and porous medium combined biologic filling, disclosed by the invention, has the advantages of simple manufacturing process, big specific surface area, and high porosity, easy bio-film formation, great unit volume biomass, high pollution removal charge, low stacking density, low resistance coefficient and good support intensity, is good for uniform flow of the liquid-state fluid and particularly suitable for a biologic dropping and filtering device, can greatly reduce energy consumption of the biologic dropping and filtering device and can fully improve purification efficiency of organic waste gas.

Description

technical field [0001] The invention relates to the field of fillers in organic waste gas treatment devices, in particular to a combined biological filler of Raschig rings and porous media. Background technique [0002] With the development of industry and the acceleration of the world's urbanization process, the world's air quality is generally threatened. In the system of air pollutants, gaseous pollutants account for more than 75% of the world's annual emissions of air pollutants. following SO 2 and NO x After the research upsurge, the pollution control of volatile organic compounds (Volatile Organic Compound) has become another focus of attention of countries all over the world. [0003] Biological method has the advantages of good treatment effect, low investment and operating costs, mild reaction conditions (normal temperature, normal pressure), no secondary pollution, easy management and operation, etc., especially when dealing with large flow and low concentration ...

AI Technical Summary

Problems solved by technology

Although the composite biological filler attaches inorganic filler zeolite and expanded vermiculite particles to the surface of the organic filler polyvinyl chloride skeleton, making it easy for microorganisms to form a film, it has little effect on the pressure drop of the filler layer, and is more suitable for treating organic wastewater. When used in When organic waste gas is treated in the biological trickling filter device, its specific surface area is small, resulting in less biomass of the film-hanging film, and the stability of the surface composite material cannot be guaranteed, which may cause the bio-trickling filter device The blocking problem of

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