Biological filler with self-rotating function for waste gas treatment

Abstract

The invention relates to the field of filler and aims at providing biological filler with a self-rotating function for waste gas treatment. The biological filter comprises a spherical support frame and a hollow multi-surface sphere, wherein the spherical support frame is formed by the abutting joint of two semispherical surfaces, each semispherical surface is formed by a plurality of longitudinal bars and transverse bars which are staggered; the hollow multi-surface sphere comprises a rotating shaft and a plurality of semi-circular blades which are fixed on the rotating shaft through straight sides; the two ends of the rotating shaft are arranged in a rotating shaft sleeve of the spherical support frame; and the hollow multi-surface sphere can freely rotate in the spherical support frame. The biological filler has the advantages of being beneficial to the uniform growing and distribution of microorganisms on the surface of the filler, further being beneficial to the increasing of microorganism charge capacity of the filler in unit volume, the purification efficiency of waste gas and load, being capable of promoting aged biological membranes to timely fall off and be taken away from gaps of the filter along with circulating water so as to avoid short-circuiting and blocking of a filler layer and having large enough specific surface area and void ratio, thereby ensuring the surface and space required for the growth of the microorganisms.

Description

technical field [0001] The invention relates to a filler used for a waste gas biological treatment device, in particular to a filler used for a waste gas biological trickling filter device. Background technique [0002] Compared with physical and chemical adsorption methods, exhaust gas biological treatment technology is recognized as low treatment cost and small secondary pollution. In recent years, this technology has been extensively studied and has been applied in a certain scale of engineering. [0003] The biological trickling filtration method has the advantages of large biomass and easy control of operating conditions, and is an efficient waste gas biological treatment technology. Biofilm filler is the carrier of microbial attachment and material transfer in the bio-trickling filter device, and its performance directly affects the effect of exhaust gas purification. [0004] The heavy filler itself requires higher structural strength of the bioreactor, which will i...

AI Technical Summary

Problems solved by technology

However, the packing itself is static. Due to the contact and crossing phenomenon between the packings, the bias flow and channel flow of gas and liquid are inevitable. In severe cases, even part of the packing cannot be fully wetted.

As a result, the moisture and nutrient matrix obtained by each part of the filler are different, and the microorganisms are excessively accumulated locally. Under the conditions of high pollutant load or long-term operation, short circuits or blockages are prone to occur.

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