Efficient suspension type biological carrier

Abstract

The invention discloses an efficient suspension type biological carrier. The hydrophilic biological carrier comprises a short hollow tube as well as a first concentric ring and a second concentric ring which are sequentially concentrically arranged on the outer side of the short hollow tube. The biological carrier comprises components in parts by weight as follows: 65-75 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, 3-5 parts of maleic anhydride, 0.2-0.6 parts 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 (moving bed biological reactor) suspension type biological filler is 0.96-0.98 g/cm<3>. According to the efficient suspension type biological carrier, microorganisms are attached to the carrier more easily, the hydrophilic biological carrier has a large specific surface area and extremely high adsorbability, a microbial film attached to the outer surface of the carrier can be prevented from shedding due to friction of the carriers in water, and the time required for film forming is short.

Description

technical field [0001] The invention relates to a suspended biological carrier, 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 of en...

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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