A modified polyethylene microorganism carrier filler

Abstract

The invention provides a modified polyethylene microbial carrier filler. Modified polyethylene serves as a main framework material and is subjected to die-cast formation, a hydrophilic polymer coatingis coated on the surface of the framework, and the coating is subjected to high energy electron beam irradiation, so that oxygen-containing polar groups are introduced onto molecular chains of the modified polyethylene to be firmly bound to the modified polyethylene, a hydrophilic surface is formed so as to enhance the hydrophilic property of the carrier filler, and the filler is in a suspended state in water, can turn up and down in the pool and is fully contacted and reacted with the water. According to the carrier filler, every two of a polygonal ring, a first circular ring and a second circular ring are firmly connected by radial ribs, so that the carrier filler is difficult to deform when being used for a long time. Grooves are formed in radial ribs, anaerobes are attached, protection is provided for growth of the anaerobes, dominant population grows, and the biofilm biomass on the carrier is increased.

Description

technical field [0001] The invention relates to a modified polyethylene microbial carrier filler, which belongs to the field of sewage treatment. Background technique [0002] The biofilm moving bed process is a new and efficient biological treatment process that absorbs the advantages of the traditional activated sludge process and biological contact oxidation process. The filler moves freely in the biochemical tank by means of aeration and stirring. When the sewage continuously passes through the reactor with the filler, it grows on the filler to form a biofilm, and the microorganisms on the biofilm multiply in large numbers. C, N, P, etc. are metabolized to purify sewage. The filler is the core of the biofilm moving bed process, and its material and surface properties will directly affect the attachment and growth of microorganisms, and then affect the treatment effect of wastewater. [0003] At present, the common polyethylene biofillers on the market have poor hydroph...

AI Technical Summary

Problems solved by technology

[0003] At present, the common polyethylene biofillers on the market have poor hydrophilicity and bio-affinity, resulting in insufficient film-hanging speed, film-hanging amount, and tightness between the film and the filler. Bioaffinity modification, activated carbon and magnetic modification are expected to improve the mass transfer, film formation and water treatment performance of the packing

In addition, the impact strength of PVC is only 3-5kJ / m 2 , has the disadvantages of low impact strength and poor thermal stability, which lead to the aging of the filler and the short service life

At the same time, most of the fillers have low strength, soft materials, smooth surfaces, and float in water. Even under the action of external forces, they cannot form a full range of "fluidization" states, that is, they cannot completely react with the water in the pool.

Images