Method for making structured biological deodorizing filler and structured biological deodorizing filler

Abstract

The invention discloses a method for manufacturing regular biological deodorization packing. The method is characterized in that humic acid, composite nutrients and water are doped in raw material ceramsite and straw particles forming the packing, meanwhile, acidity buffer matter is added, the packing in a regular shape is pressed through a mould, and a cellular structure body is formed after natural airing. The invention further discloses the regular biological deodorization packing. The regular biological deodorization packing is characterized in that the regular biological deodorization packing is composed of, by weight, 60 percent to 70 percent of the ceramsite, 12 percent to 15 percent of the straw particles, three percent to five percent of sodium humate, two percent to three percent of the composite nutrients (urea, carbinol, the humic acid, nitrogen-phosphorus-potassium mixed fertilizer, molasses, peptone, light ground pumice and the like), two percent to three percent of the acidity buffer matter, hydroxide, 12 percent to 15 percent of silicate and the balance water. The biological deodorization packing has the performance of controllability and self-domestication culturability, packing cost is lowered, the biological deodorization packing is high in deodorization efficiency, stable in running, long in service life and low in cost, and needed nutrition can be continuously provided for microorganism in the deodorization process.

Description

technical field [0001] The invention relates to the technical field of deodorizing fillers for sewage treatment plants, in particular to a method for preparing biological deodorizing fillers and the technology of biological deodorizing fillers prepared according to the method. Background technique [0002] At present, the biological fillers used in China can be divided into three categories according to their materials: inorganic fillers, organic fillers and composite fillers. Inorganic fillers mainly include Pall rings, Raschig rings, ceramsite, volcanic rocks, etc. Inorganic fillers can be used as carriers for microbial film formation and growth, but they do not contain the nutrients necessary for biological growth, and they need to supplement nutrients for microorganisms regularly during operation. In addition, due to the large proportion of inorganic fillers, the strength of the tower body is high, which will increase the project investment to a certain extent; organic ...

AI Technical Summary

Problems solved by technology

[0004] 1) Material issues. Inorganic fillers have suitable strength and stability, but due to the lack of nutrients in their own materials, additional nutrients need to be added to the microorganisms growing on the fillers during the odor treatment process, resulting in increased operating costs and complicated processes; And because of its large specific gravity, the overall structural strength requirements of the deodorization system are relatively high, which makes the initial investment cost of the project construction relatively high

The organic filler can continuously provide nutrients to the microorganisms during operation, but with the increase of the service life, the loss and dissolution of the internal substances will lead to the decay, hardening, and collapse of the filler layer, which will increase the system resistance and seriously affect the odor. At the same time, it also causes great hidden dangers to the safe operation of the process, so it needs to be supplemented or replaced regularly to increase the operating burden

Although the composite filler mixes organic fillers and inorganic fillers, it can alleviate their respective shortcomings to a certain extent, but due to the limitations of the two materials, it is ultimately difficult to make breakthroughs in terms of construction investment, operation input, safety and stability, etc.

[0005] 2) Lack of pertinence. Although the commonly used inorganic fillers in China can be used as carriers for microbial film formation and growth in gas treatment, most of them are transplanted from chemical production or sewage treatment industries, and are not exclusively used in gas biological deodorization Biological fillers, whose chemical properties, specific surface area, porosity and other key factors are not suitable for the ideal state of gas biological treatment

This kind of filler transplanted from other industries has not yet achieved the best applicability to gas treatment, and its limitations are more obvious when dealing with gases in extreme situations

In addition, the biological fillers used in China are usually not considered in the process of microbial film formation: according to different types of processing gases, the technical parameters such as filler composition, structure, and characteristics are adjusted accordingly, and different biological fillers are selected for different processing objects. Filling, so as to formulate corresponding operation plans in terms of screening, cultivating, acclimating, and adding corresponding selective substances to promote the growth and reproduction of dominant strains, so as to achieve the expected effect

Instead, almost the same biological filler is selected for all treatment objects. This lack of pertinence and applicability often increases the burden on the initial operation of the project, and also leads to prolongation of the project commissioning cycle, and the treatment effect is not satisfactory

[0006] 3) Lack of compatibility. Inorganic fillers have the characteristics of stable properties, high strength, and long service life. However, due to the lack of nutrients in the material, nutrients need to be added periodically during operation to ensure the activity of microorganisms, which makes the project operation cost increase; the organic filler contains the nutrients needed for microbial growth, but this also leads to its disadvantages of easy loss and hardening, and the maintenance investment is relatively large; although the composite filler mixes the two, it can only alleviate it to a certain extent. Defects, failed to solve the problem fundamentally

[0009] (1) Irregular structure, random pile filling, and inconsistent pores;

[0010] (2) The surface roughness is inconsistent, which is not conducive to the growth of microbial film;

[0011] (3) No pH adjustment function;

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