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Magnetic hollow circular cylinder filler based on residual activated sludge and preparation method thereof

A residual active, hollow technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of environmental pollution of residual sludge, achieve resource utilization, low cost, The effect of increased porosity

Inactive Publication Date: 2014-06-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is based on the above background and in order to overcome the deficiencies in the above-mentioned prior art, and solve the problem that the excess sludge is easy to cause environmental pollution, and provides a magnetic hollow cylindrical filler based on excess activated sludge and its preparation method

Method used

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  • Magnetic hollow circular cylinder filler based on residual activated sludge and preparation method thereof
  • Magnetic hollow circular cylinder filler based on residual activated sludge and preparation method thereof
  • Magnetic hollow circular cylinder filler based on residual activated sludge and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] Such as Figure 1 to Figure 3 The following method is used to prepare the magnetic hollow cylindrical filler 1 based on excess activated sludge, which consists of a matrix 2 , a magnetic ferrite layer 3 and a biofilm carrier layer 4 . Wherein the substrate 2 is a hollow cylinder with an outer diameter of 20mm, an inner diameter of 16mm, and a length of 25mm; the inner and outer surfaces of the hollow cylinder are covered with a magnetic ferrite layer 3, and the thickness of the magnetic ferrite layer 3 is 0.5mm; The surface of the magnetic ferrite layer 3 is covered with a biofilm carrier layer 4, and the thickness of the biofilm carrier layer 4 is 1.5mm.

[0030] The preparation method is:

[0031] (1) A cylindrical mold is used, and the fly ash, yellow sand and cement slurry forming the matrix 2 are coated on its surface, and the two ends of the cylindrical mold are not coated. The weight percentages of the fly ash, yellow sand and cement slurry are 37% cement, 20% ...

Embodiment 2

[0041] The following method is used to prepare the magnetic hollow cylindrical filler 1 based on residual activated sludge, which consists of a substrate 2 , a magnetic ferrite layer 3 and a biofilm carrier layer 4 . Wherein the substrate is a hollow cylinder, the outer diameter of the cylinder is 30mm, the inner diameter is 22mm, and the length is 22mm; the inner and outer surfaces of the hollow cylinder are covered with a magnetic ferrite layer 3, and the thickness of the magnetic ferrite layer 3 is 1mm; The surface of the oxygen body layer is covered with a biofilm carrier layer 4, and the thickness of the biofilm carrier layer 4 is 2 mm.

[0042] The preparation method is:

[0043] (1) A cylindrical mold is used, and the fly ash, yellow sand and cement slurry forming the matrix 2 are coated on its surface, and the two ends of the cylindrical mold are not coated. The weight percentages of the fly ash, yellow sand and cement slurry are 44% cement, 26% fly ash, 5% yellow san...

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Abstract

The invention relates to magnetic hollow circular cylinder filler based on residual activated sludge and a preparation method thereof. The magnetic hollow circular cylinder filler based on the residual activated sludge is composed of a matrix, magnetic ferrite layers and biofilm carrier layers, wherein the matrix is a hollow circular cylinder, each of the inner surface and the outer surface of the hollow circular cylinder is covered with a magnetic ferrite layer, and the surface of each magnetic ferrite layer is covered with a biofilm carrier layer. The preparation method comprises the following steps: adopting a cylindrical mould, coating coal ash, yellow sand and cement paste which form the matrix on the surface of the cylindrical mould; after the matrix is formed, separating the matrix from the cylindrical mould, and maintaining the matrix at room temperature; then applying glue on the inner surface and the outer surface of the matrix and covering each of the inner surface and the outer surface of the matrix with a magnetic ferrite powder layer, so as to form magnetic ferrite layers; after the glue is dried and the magnetic ferrite powder is stable, coating slurry forming the biofilm carrier layer on the surface of the magnetic ferrite layer.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a magnetic hollow cylinder filler based on excess activated sludge and a preparation method thereof. Background technique [0002] In sewage treatment, the biofilm method has the advantages of strong adaptability, good operational stability, no sludge bulking, convenient operation and management, and good sewage treatment effect. Therefore, it is widely used in sewage treatment. In the biofilm treatment system, the biofiller is one of the cores of the biofilm water treatment technology, and it is the place where microorganisms rely for growth and metabolism, which is directly related to the effect and cost of water treatment. Traditional fillers often have disadvantages such as hydrophilicity, poor biocompatibility or high cost. [0003] At the same time, with the acceleration of urbanization, a large number of sewage treatment plants have been continuously built. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
Inventor 赵如金卞瑛磊王瑞静龚丽影王韦胜张云时杰华
Owner JIANGSU UNIV
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