Microorganism-loaded filling material and preparation method thereof

Abstract

The invention discloses a microorganism-loaded filling material. The microorganism-loaded filling material comprises, by weight part, high-density polyethylene, polypropylene resin, low-density polyethylene, bamboo charcoal powder, wood powder, lignin, dichloromethane, diethyl guanidine sulfate, N,N'-ethylene bis-stearamide, maleic anhydride, dicumyl peroxide, gelatin, magnetic powder and pentaerythritol stearate, and the density of the microorganism-loaded filling material is 0.96-0.98 g/<cm>3. The filling material is high in biofilm culturing speed, not likely to fall off, high in treatmentefficiency and suitable for treating low-concentration organic substances and ammonia nitrogen in sewage and low-concentration organic wastewater. The biological filling material has extremely high hydrophilicity and biocompatibility, the filling material has high adsorption strength on biofilms, and interception and accumulation of biomass on a filling material carrier are facilitated.

Description

technical field [0001] The invention relates to a filler for carrying microorganisms, which belongs to the sewage treatment in the discipline of environmental engineering [0002] technology field. Background technique [0003] Biofilm sewage treatment is a technology that makes microorganisms such as nitrifying bacteria and denitrifying bacteria fix on the surface of the filler and grow in the form of a film to achieve sewage treatment. Generally, it can be divided into biological filter, biological turntable, biological contact oxidation method, etc. Although their structures are very different, their basic principles are the same, that is, through the contact between wastewater and biofilm, the mass transfer of solid-liquid two-phase is carried out. Biofilm biodegrades organic matter, enabling wastewater to be purified. The biofilm method has a high treatment efficiency and has obvious effects on water bodies slightly polluted by organic matter and ammonia nitrogen. Ho...

AI Technical Summary

Problems solved by technology

[0004] The main problems are as follows: On the one hand, problems such as clogging, agglomeration, and hardening are often encountered in the use of fillers, which affect the biological treatment effect

And the above-mentioned fillers all need to be installed on the auxiliary support, causing many inconveniences such as filler installation and replacement; There are deficiencies in the speed, the amount of film formation and the tightness between the film and the filler; secondly, due to the low pollution load, the growth of microorganisms is limited, and the growth rate is slow, which also makes it difficult for biofilm formation