Biological affinitive hydrophilic modified magnetic filler

Abstract

The invention relates to biological affinitive hydrophilic modified magnetic filler applied in the field of wastewater treatment. The biological affinitive hydrophilic modified magnetic filler comprises the following raw materials: 78%-82% of polypropylene, 6%-8% of polyvinyl alcohol, 2%-4% of active carbon powder, 2%-3% of modified heavy calcium carbonate powder, 2% of hydroxyapatite, 1.6% of stearic acid, 0.4% of white mineral oil and 4% of modified barium ferrite magnetic powder. According to the biological affinitive hydrophilic modified magnetic filler, a biological hydrophilic macromolecular material-polyvinyl alcohol is mainly introduced, so that the pollutant adsorption performance can be improved; the hydroxyapatite is introduced, so that the bioactivity can be improved, a proper nutritional source is provided for microorganisms, the hydrophilicity of the filler is improved, the biofilm formation starting speed is increased, and the wastewater treatment efficiency is improved; the modified barium ferrite magnetic powder containing rare metal is introduced, so that a microscopic high-intensity magnetic field and a macroscopic low-intensity magnetic field are formed, the adsorption effect of degradation bacteria on the surface of the filler is enhanced, and then the biofilm formation speed and the wastewater degradation speed of the filler in wastewater treatment are increased.

Description

technical field [0001] The invention relates to a bio-affinity and hydrophilic modified magnetic seed filler, which is applied in the field of sewage treatment. Background technique [0002] With the rapid economic development, the sewage problem seriously affects the ecological environment. At present, the methods of wastewater treatment can be divided into physical methods, chemical methods and biological methods. Physical methods and chemical methods include physical adsorption, sedimentation, chemical incineration, etc. These methods are simple to operate, but have high application costs and affect environmental safety. Therefore, biological treatment methods are getting more and more attention. [0003] At present, the common biological fillers on the market are mainly made of polypropylene, polyethylene, polyvinyl chloride or polyester, etc., but from the molecular structure of these materials, it can be seen that the only groups that exist are -CH 3 、-CH 2 , these...

AI Technical Summary

Problems solved by technology

[0003] At present, the common biological fillers on the market are mainly made of polypropylene, polyethylene, polyvinyl chloride or polyester, etc., but from the molecular structure of these materials, it can be seen that the only groups that exist are -CH 3 、-CH 2 , the polarity of these two groups is very weak in water, they are very typical superficially hydrophobic polymers with poor hydrophilicity

In practical applications, it has been found that the fillers made of these materials have poor hydrophilicity (the ability to absorb moisture on the surface of the material) and bioaffinity (biocompatibility and biological activity), which leads to the wetting of the surface of biological fillers. , Mass transfer performance and microbial attachment and growth performance are not good, and there are deficiencies in the start-up speed of microbial film formation, the amount of film formation, the tightness of the film and filler, the activity of microbial cells and the utilization rate of oxygen

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