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Modified bamboo fiber-suspended magnetic filler and preparation method thereof

A magnetic filler and bamboo fiber technology, applied in the direction of chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problem of lack of hydrophilicity, biocompatibility and mechanical strength, and does not provide magnetic suspension Filler preparation methods and other issues, to achieve high bio-affinity, high efficiency, easy to hang film effect

Inactive Publication Date: 2021-07-09
WENZHOU IND SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN110304712A discloses a sulfur-loaded bamboo fiber magnetic suspension filler, and its components and content are: high-density polyethylene 70%-80%; bamboo fiber 2%-5%; magnetic powder 15%-20%; Pyrite powder 1%~6%; Wherein, described magnetic powder is ferroferric oxide, and above-mentioned patent only discloses the component of suspended filler, does not provide a kind of adopting two kinds of powdery raw materials (magnetic powder, pyrite powder) A preparation method for preparing magnetic suspension filler with bamboo fiber and high-density polyethylene, and the bamboo fiber and high-density polyethylene are directly used as the main raw materials of the suspension filler, and the prepared suspension filler has the advantages of hydrophilicity, biocompatibility and mechanical strength, etc. There are deficiencies in this aspect, and further improvement is urgently needed

Method used

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  • Modified bamboo fiber-suspended magnetic filler and preparation method thereof
  • Modified bamboo fiber-suspended magnetic filler and preparation method thereof

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Effect test

Embodiment 1

[0028] A kind of modified bamboo fiber suspended magnetic filler and preparation method thereof

[0029] The modified bamboo fiber suspended magnetic filler is formed by blending, extruding and cutting magnetized polyethylene and modified bamboo fiber; the weight ratio of the magnetized polyethylene to the modified bamboo fiber is 1:0.2; the magnetized polyethylene is modified It is blended with polyethylene and magnetic active powder; the above magnetic active powder is Si-Fe 3 o 4 / PEI-EDTA magnetic nano powder; the weight ratio of the above-mentioned modified polyethylene to the magnetizing active powder is 1:0.01; the above-mentioned modified bamboo fiber is surface-modified thick bamboo fiber.

[0030] In the present embodiment, the above-mentioned modified polyethylene includes the following raw materials in parts by weight: 80kg of high-density polyethylene, 5kg of rare earth compound, 2kg of hydrophilic polymer, 1kg of calcium hardate, 15kg of montmorillonite powder, ...

Embodiment 2

[0038] A kind of modified bamboo fiber suspended magnetic filler and preparation method thereof

[0039] The modified bamboo fiber suspended magnetic filler is formed by blending, extruding and cutting magnetized polyethylene and modified bamboo fiber; the weight ratio of the magnetized polyethylene to the modified bamboo fiber is 1:0.25; the magnetized polyethylene is modified It is blended with polyethylene and magnetic active powder; the above magnetic active powder is Si-Fe 3 o 4 / PEI-EDTA magnetic nano powder; the weight ratio of the above-mentioned modified polyethylene to the magnetizing active powder is 1:0.15; the above-mentioned modified bamboo fiber is a surface-modified thick bamboo fiber.

[0040] In the present embodiment, the above-mentioned modified polyethylene includes the following raw materials in parts by weight: 85kg of high-density polyethylene, 7kg of rare earth compound, 2.5kg of hydrophilic polymer, 1.5kg of calcium hardate, 18kg of montmorillonite p...

Embodiment 3

[0048] A kind of modified bamboo fiber suspended magnetic filler and preparation method thereof

[0049] The modified bamboo fiber suspended magnetic filler is formed by blending, extruding and cutting magnetized polyethylene and modified bamboo fiber; the weight ratio of the magnetized polyethylene to the modified bamboo fiber is 1:0.3; the magnetized polyethylene is modified It is blended with polyethylene and magnetic active powder; the above magnetic active powder is Si-Fe 3 o 4 / PEI-EDTA magnetic nano powder; the weight ratio of the above-mentioned modified polyethylene to the magnetizing active powder is 1:0.015; the above-mentioned modified bamboo fiber is a surface-modified thick bamboo fiber.

[0050] In the present embodiment, the above-mentioned modified polyethylene includes the following raw materials in parts by weight: 88kg of high-density polyethylene, 9kg of rare earth compound, 3.5kg of hydrophilic polymer, 1.5kg of calcium hardate, 20kg of montmorillonite p...

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Abstract

The invention discloses a modified bamboo fiber-suspended magnetic filler and a preparation method thereof. The modified bamboo fiber-suspended magnetic filler is prepared by blending, extruding and cutting magnetized polyethylene and modified bamboo fibers, wherein a weight ratio of the magnetized polyethylene to the modified bamboo fibers is 1: (0.2-0.5); the magnetized polyethylene is formed by blending modified polyethylene and magnetized active powder; a weight ratio of the modified polyethylene to the magnetized active powder is 1: (0.01-0.03); the modified bamboo fibers are surface-modified coarse bamboo fibers; and the magnetized active powder is Si-Fe3O4 / PEI-EDTA magnetic nanopowder. The prepared modified bamboo fiber-suspended magnetic filler is good in hydrophilicity, high in porosity, large in specific surface area and high in mechanical strength, and has acid and alkali corrosion resistance and oxidation resistance.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a modified bamboo fiber suspended magnetic filler and a preparation method thereof. Background technique [0002] The moving bed biofilm reactor (MBBR) is an efficient and economical sewage treatment process. The filler is in a suspended state in the moving bed biofilm reactor, which is used as an active carrier of the biofilm, providing microorganisms with the opportunity to attach, grow and degrade organic matter. In the process of sewage treatment, the contact between sewage and biofilm can be enhanced, and the reflection efficiency can be improved. Suspended filler is the core of MBBR wastewater treatment process, which affects the efficiency of MBBR treatment process. At present, MBBR fillers are mainly divided into three categories: fixed fillers, suspended fillers, and dispersed fillers. The main manufacturing materials are polypropylene, polyethylene, polyester,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F101/16C02F101/30
CPCC02F3/00C02F2101/30C02F2101/16
Inventor 管鸿才郑卉孙雅峰邵建雷潘钦权黄志达
Owner WENZHOU IND SCI RES INST
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