Preparation method of suspended biological carrier for water treatment

Abstract

The invention discloses a preparation method of a suspended biological carrier for water treatment. The preparation method comprises the following steps: an acetone solution is prepared by dissolving 3-5 parts of maleic anhydride and 0.2-0.6 parts of dicumyl peroxide with 2.5 kg of acetone and then put into a mixer; 55-65 parts of high-density polyethylene, 8-12 parts of low-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 and 0.5-2 parts of magnetic powder are added to the mixer and uniformly mixed, and the mixture is taken out and put into an open container, so that acetone can volatilize naturally and becomes solids; the solid materials are put into a double-screw extruder, and granulation is realized through melting extrusion; the prepared granules are put into a 45-model single screw extruder and are extruded to be formed through an extrusion die. The suspended biological carrier has very high adsorption intensity for a biological membrane and facilitates interception and accumulation of biomass on a filler carrier, the membrane forming speed is high, and the filler is not prone to fall.

Description

technical field [0001] The invention relates to a MBBR 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 water treatment o...

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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