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Gutta-percha-modified biofilm filler and its preparation method and application

A technology of eucommia gum and biofilm, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of insufficient roughness, poor biocompatibility, insufficient adhesion of biofilms, etc. , to achieve the effect of low process application cost, simple manufacturing conditions, and increased surface roughness and hydrophilicity

Active Publication Date: 2018-11-06
CHINA CONSTR THIRD BUREAU GREEN IND INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of surface hydrophobicity, insufficient roughness, poor biocompatibility, and insufficient adhesion of biofilm on fillers of traditional biofilm fillers, the present invention uses natural Eucommia gum to modify traditional biofilm fillers, and is made of inert polymers. Surface modification of biofilm fillers can enhance the biofilm loading effect of conventional polyester filaments; Eucommia gum modified biofibers can increase their surface roughness and improve hydrophilicity and biophilicity

Method used

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  • Gutta-percha-modified biofilm filler and its preparation method and application
  • Gutta-percha-modified biofilm filler and its preparation method and application
  • Gutta-percha-modified biofilm filler and its preparation method and application

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Effect test

Embodiment 1

[0033] 1. Polypropylene filler in the shape of multifaceted hollow spheres (such as figure 1 shown) placed in a constant temperature room at -20°C;

[0034] 2. Add eucommia gum to petroleum ether with a low boiling point, and ultrasonicate it in a constant temperature water bath at 70° C. to prepare a supersaturated solution of eucommia gum with a mass fraction of 30 wt %;

[0035] 3. Under constant temperature conditions, transfer the supersaturated solution of eucommia gum prepared in step 2 into a stainless steel bottle, and use high-pressure nitrogen as a carrier gas to spray the supersaturated solution of eucommia gum evenly onto the surface of the expanded polypropylene filler. The eucommia gum is rapidly condensed and solidified, and sticks to the surface of the polypropylene filler, and the petroleum ether is still in liquid state and is recovered from the polypropylene filler by dripping to obtain the eucommia gum-modified polypropylene filler.

[0036] The structura...

Embodiment 2

[0042] 1. The present embodiment selects combined polyvinyl chloride biological fiber filler (such as Figure 5 shown).

[0043] 2. Heating Eucommia gum to a molten state (maintaining the temperature between 85-100°C, keeping the Eucommia gum in liquid state), under the transport of high-pressure carrier gas (nitrogen, air or carbon dioxide), using molten state injection technology, the The molten eucommia gum is evenly sprayed onto the surface of the unfolded burr ball polyvinyl chloride biofiber filler, and the eucommia gum rapidly condenses and adheres to the surface of the polyvinyl chloride biofiber filler under low temperature or normal temperature conditions. The structural characteristic parameters of the polyvinyl chloride biological fiber filler before and after modification are listed in Table 2.

[0044] Table 2 Structural characteristic parameters of combined polyvinyl chloride bio-fiber filler before and after modification of Eucommia gum

[0045]

[0046]3....

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Abstract

The invention discloses a gutta-percha-modified biofilm filler and its preparation method and application. Natural gutta-percha is sprayed on the surface of a traditional biofilm filler through the solution jet technology, surface modification is conducted on the biofilm filler prepared from inert polymers, and the loading effect of biofilm filler is enhanced; after quick-drying molding, the modified biofilm filler has hydrophilicity and biophilicity, can effectively improve such shortcomings of a traditional suspended biofilm filler that on-surface formed biofilms are little, the impact loadresistance is low, the adhesion force of the biofilms is not enough and the biofilm formation time is long, and can be applied in the biofilm technology suitable for industrial and municipal sewage treatment. The adopted gutta-percha as raw materials is widely planted in China and low in technologic application cost, condition requirements of the preparation technology are simple, the preparationtime is short, and the gutta-percha-modified biofilm filler is especially suitable for mass preparation of high-performance suspended biofilm fillers.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a eucommia modified biofilm filler used in a biofilm sewage treatment system, a preparation method and an application thereof. Background technique [0002] Biofilm filler is one of the core technologies in water treatment, which is of great significance to the field of water treatment. Most of the commercially available biofilm filler skeletons are high molecular polymers such as polyethylene, polypropylene, and resin, which are cheap, but they are hydrophobic and poor in biocompatibility, so the film hangs for a long time and the biofilm is easy to fall off; while the hydrophilic ones Most of the biofilm fillers are expensive, and the cost of industrial application is high. Contents of the invention [0003] In order to solve the problems of surface hydrophobicity, insufficient roughness, poor biocompatibility, and insufficient adhesion of biofilm on fillers of traditional biof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
CPCC02F3/00
Inventor 王旭毛旭辉黄种买汪远熊鹰胡茂华曾香
Owner CHINA CONSTR THIRD BUREAU GREEN IND INVESTMENT CO LTD
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