A kind of modified flow biological filler and its preparation method and application

Abstract

The invention relates to a modified flowable biological filling material, and a preparation method and application thereof. The modified flowable biological filling material is prepared from the following components by weight: 78.8 to 79.8% of polyethylene, 8.6 to 9.5% of polypropylene, 5.0 to 6.0% of barium sulfate, 2.0 to 2.5% of magnesium carbonate, 1.6 to 2.0% of diatomite, 0.7 to 0.9% of mixed active carbon powder, 0.6 to 0.8% of iron oxide red and 0.08 to 0.12% of an anti-oxidant. According to the invention, the modified flowable biological filling material provided by the invention has substantially improved hydrophilicity and becomes a hydrophilic substance; in use, the biological filling material closely contacts with water, so the surface roughness of the biological filling material is greatly increased, and thus, the specific surface area of the biological filling material is increased and activated sludge can be easily adhered onto the surface of the biological filling material; and the biological filling material has improved usage effect, greatly enhanced anti-ageing and anti-oxidation performance and prolonged service life.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a modified mobile biological filler and its preparation method and application. Background technique [0002] 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 of enterprises and the...

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.

[0003] 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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