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Catalytic iron internal electrolysis biological fluidization filler and preparation method thereof

A technology of biological fluidization and catalytic iron, which is applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve problems such as hindering direct contact between waste water and filler, reducing treatment effect, difficulty in installation and replacement, etc. , to achieve the effect of easy replacement, good effect and strong restoring ability

Inactive Publication Date: 2012-12-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the heavy electrolytic filler in the catalytic iron, it usually exists in a static state in the system. Therefore, although the bulk density of the filler used is small and the void ratio of the filler reaches more than 95%, with the extension of the operating time , the inevitable clogging phenomenon hinders the direct contact between the waste water and the filler and reduces the treatment effect
In addition, the installation of traditional catalytic iron packing requires a special support frame, which is difficult to install and replace
Therefore, when using this type of catalytic iron inner electrolytic filler, we have to consider how to reduce the occurrence of this type of phenomenon and take various measures, which affects the popularization and application of this technology to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Leftovers after cast iron processing-iron shavings and copper shavings are made into a spherical catalytic iron unit material with a diameter of 95mm according to a ratio of 10:1, and the bulk specific gravity is 0.15. The carbon content of the iron shavings used is 0.5%, and the thickness of the iron shavings is 2.0mm, with ductility and tensile strength, except for iron shavings, other impurities are 2%, the copper shavings used are processed from copper sheets, the thickness is 1.0mm, the length is 100mm, and the width is 15mm. In addition, polyethylene material is used to make a mesh hemispherical cap with an outer diameter of 100 mm and an inner diameter of 95 mm. Its porosity is 55%. The non-porous part of each hemispherical cap is hollow to form an air bag. The buoyancy of the shell is equal to the shell Its gravity is 0.95 times the sum of the gravity of the spherical catalytic iron unit material. The spherical catalytic iron unit material is placed in two hemisp...

Embodiment 2

[0032] The scrap iron shavings and copper shavings processed by cast iron will be made into a hemispherical crown catalytic iron unit material with a diameter of 145mm according to a ratio of 15:1. The bulk specific gravity is 0.2, and the carbon content of the iron shavings used is 0.05%. The thickness is 1.0mm, with ductility and tensile strength. Except for iron shavings, the other impurities are 2%. The copper shavings used are processed from copper sheets. The thickness is 0.5mm, the length is 150mm, and the width is 5mm. The electrolytic material in the catalytic iron is placed in the existing spherical suspension filler with a diameter of 150 mm, and foam plastic is placed at the center of the catalytic iron unit material, so that the buoyancy of the foam plastic is equal to 1.0 times the gravity of the electrolytic biofluidized filler in the entire catalytic iron. The catalytic iron part of the electrolytic biological fluidized filler in the finally formed catalytic iro...

Embodiment 3

[0034] The scrap iron shavings and copper shavings processed by the cast iron will be made into a hemispherical crown catalytic iron unit material with a diameter of 36mm according to the ratio of 20:1, the bulk specific gravity is 0.3, and the carbon content of the iron shavings used is 0.1%. The thickness is 1.5mm, with ductility and tensile strength. Except for iron shavings, other impurities are 1%. The copper shavings used are processed from copper sheets. The thickness is 0.5mm, the length is 50mm, and the width is 10mm. Put the inner electrolytic material into a shell with a diameter of 38mm, add a specific gravity adjustment material made of foam (the buoyancy generated by the foam is equal to 0.95 times the gravity of the entire combined packing that is finally formed), and fix the shell to form a material that can be suspended in water. The catalytic iron internal electrolysis biological fluidized packing, the catalytic iron carrier in the fluidized packing accounts f...

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Abstract

The invention discloses a catalytic iron internal electrolysis biological fluidization filler and a preparation method thereof, falling into the field of wastewater treatment. The filler comprises the following materials by weight: 10-15% of a casing, 80-90% of catalytic iron, and 0-5% of specific gravity regulating material. The preparation method comprises the steps of pressing catalytic iron into catalytic iron internal electrolysis material of certain shape, and filling the catalytic iron internal electrolysis material and specific gravity regulating material into the casing, or directly filling the catalytic iron internal electrolysis material into the casing with regulating function, to obtain fluidizable biological filler. According to the invention, the defect of easy blocking of catalytic iron internal electrolysis is solved, while the technical merits of catalytic iron internal electrolysis filler, such as low cost, easy availability, environment friendliness, strong reducing ability, good effect, and wide pH adaptability, are fully retained.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a catalytic iron internal electrolysis biological fluidization filler and a preparation method thereof. Background technique [0002] In order to improve the microbial biomass and activity in wastewater biological treatment systems, scientists and engineers have developed a variety of biological carrier fillers. According to the different installation methods of packing, it can be divided into fixed type and fluidized type. The former includes soft, semi-soft packing, composite packing, elastic packing, etc. Although these packings are relatively cheap, they require corresponding packing frames for installation, which not only increases the investment and the difficulty of packing replacement, but also affects the related water under the packing. Maintenance and replacement of processing equipment (such as aeration, stirring, water distribution, etc.). The fluid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/28C02F3/30
CPCY02W10/10
Inventor 刘志刚马鲁铭王红武吴德礼樊金红
Owner TONGJI UNIV
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