Modified MBBR (moving bed biofilm reactor) suspended biological filler and preparation method thereof

Abstract

The invention discloses a modified MBBR (moving bed biofilm reactor) suspended biological filler which is composed of the following components in parts by weight: 65-75 parts of high-density polyethylene, 5-15 parts of white lime, 5-20 parts of Dow powder activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder. The density of the modified MBBR suspended biological filler is 0.96-0.98 g / cm<3>. The modified MBBR suspended biological filler has the advantages of high biofilm formation speed, low shedding tendency and high treatment efficiency, is suitable for treating low-concentration organic matters and ammonia nitrogen in sewage, and is applicable to low-concentration organic wastewater. The biological filler has very high hydrophilicity and biological affinity, has very high adsorption strength for the biofilm, and thus, is beneficial to entrapment and accumulation of biomass on the filler carrier.

Description

technical field [0001] The invention relates to a modified 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 tr...

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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