Preparation technology of suspended filler for rapid microbial biofilm formation

Abstract

The invention discloses a preparation technology of suspended filler for rapid microbial biofilm formation. The preparation technology comprises the following steps; an acetone solution is prepared from 3-5 parts of maleic anhydride and 0.2-0.6 parts of dicumyl peroxide through dissolution with 2.5 kg of acetone and placed in a mixer; 65-75 parts of high-density polyethylene, 5-15 parts of slaked lime, 5-20 parts of DOW powdered activated carbon, 6-10 parts of light calcium carbonate, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of Fe3O4 magnetic powder and 0.1-0.3 parts of manganese-zinc ferrite are added to the mixer and uniformly mixed, acetone volatilizes naturally after a mixture is taken out and placed in an open container, and the mixer becomes a solid; the solid material is fed into a twin-screw extruder and subjected to melt-extrusion and granulation; granulated granules are fed into a type 45 single-screw extruder and is subjected to extruding molding through an extrusion mold. The biofilm formation speed is high, a biofilm is not prone to falling, the treating efficiency is high, and the preparation technology is suitable for treating low-concentration organic matters and ammonia nitrogen in sewage.

Description

technical field [0001] The invention relates to a preparation process of suspended biological filler, which belongs to the sewage treatment in the discipline of environmental engineering [0002] technology field. Background technique [0003] With the continuous development of cities, the emergence of emerging industries has accelerated the deterioration of environmental pollution. In particular, the state has stepped up efforts to control industrial pollution and raised sewage discharge standards. It is difficult for existing treatment technologies to meet the requirements of the new standards. Therefore, my country's water treatment industry is also accelerating the development and research of new technologies according to the development needs of the environment to meet the increasingly severe environmental requirements. In recent years, biofilm technology has been used in sewage treatment to meet the requirements of sewage upgrading, so as to alleviate the pressure of...

AI Technical Summary

Problems solved by technology

At present, the commonly used fillers in China are fixed fillers such as honeycomb fillers, soft fillers, semi-soft fillers, and composite fillers. However, these fillers often encounter problems such as clogging, agglomeration, and hardening during use, which affects the biological treatment effect.

And the above-mentioned fillers need to be installed on the auxiliary bracket, which causes many inconveniences such as filler installation and replacement.

[0004] The filler products of the prior art have certain problems in practical application. Due to the small specific surface area, poor hydrophilicity and bio-affinity, there are problems in the speed of film formation, the amount of film formation, and the tightness between the film and the filler. Insufficient; Secondly, due to the low pollution load, the growth of microorganisms is limited and the growth rate is slow, which also makes it difficult to biofilm

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