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Foamed nickel and iron carbon combination type biological filler and preparation method thereof

A technology of biological filler and nickel foam, which is applied in chemical instruments and methods, biological water/sewage treatment, electrochemical and biological combination treatment, etc., to achieve the effects of good sedimentation, easy biofilm formation, and simple manufacturing process

Active Publication Date: 2019-05-14
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the current pollution characteristics of waste water and waste gas and the deficiencies of existing biotechnology, the present invention provides a combined biological filler of nickel foam and iron-carbon and its preparation method, which can greatly reduce the energy consumption of waste water and waste gas purification systems, and process The process does not involve secondary pollution, and can fully improve the purification efficiency of refractory organic pollutants

Method used

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  • Foamed nickel and iron carbon combination type biological filler and preparation method thereof
  • Foamed nickel and iron carbon combination type biological filler and preparation method thereof

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preparation example Construction

[0034] The preparation process of nickel foam 2 is: polyurethane foam → roughening → sensitization → activation → electroless nickel plating → electroforming nickel → pyrolysis → heat treatment. Coarsening with KMnO 4 +H 2 SO 4 The process makes the porosity rate reach more than 99%; sensitization and activation adopt conventional stannous chloride and palladium chloride process, electroless nickel plating adopts alkaline low-temperature nickel plating process with sodium hypophosphite as reducing agent; electroforming nickel adopts Nickel sulfate solution, the anode uses electrolytic nickel, the foam after electroless nickel plating is fixed on the conductive frame as the cathode, the power supply uses a silicon controlled rectifier that can be controlled by constant voltage and constant current; the foam mandrel skeleton is removed by heating and decomposition, and then reduced Ni foam 2 was obtained by heat treatment under atmosphere.

[0035] The specific operation step...

Embodiment 1

[0040] Such as figure 1 As shown, the combined biofiller of foamed nickel and iron-carbon particles of the present invention includes foamed nickel 2, and iron-carbon particles 1 coated with surface-distributed iron needle-like net 3 are fixed in the foamed nickel 2, and the foamed nickel 2 is a continuous foam For nickel, the pore diameter of the foamed nickel 2 is 0.5 mm to 1 mm, the thickness of the foamed nickel 2 is 1 mm to 2 mm, and the geometric size of the foamed nickel 2 is 15 mm×15 mm. The inner diameter of the iron-carbon particles 1 is 10mm-12mm, and the height of the iron-carbon particles 1 is 8mm-10mm. A piece of nickel foam 2 is coated with iron-like needle mesh 3 and iron-carbon particles 1 distributed on the surface, and the iron needle-like mesh 3 is used to support the nickel foam 2 . The nickel foam 2 is an ultra-thin flaky nickel foam 2, and the iron-carbon particle 1 is a cylindrical solid made by mixing iron-carbon powder.

[0041] The content of the t...

Embodiment 2

[0044] Under normal temperature conditions, the reactor will contain 100mg·Nm -3 and 120mg·Nm -3 Xylene and ethyl acetate mixed simulated waste gas 100L h -1 Pass it into the electrode biofilm reactor with the built-in biological filler, stay for 1min, and detect the purified tail gas. The result is that the removal efficiencies of xylene and ethyl acetate are 91.1% and 95.5% respectively.

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Abstract

The invention discloses a foamed nickel and iron carbon combination type biological filler and a preparation method thereof. The foamed nickel and iron carbon combination type biological filler comprises foamed nickle; the foamed nickle is internally coated with iron carbon particles; the foamed nickle adopts an ultrathin netting type sheet structure; and the matrix of the iron carbon particles adopts cylindrical particles, the outer surfaces of the cylindrical particles are distributed with acicular ferrite. According to the preparation method of the foamed nickel and iron carbon combinationtype biological filler, the iron carbon particles are completely coated with the sheet-shaped foamed nickle, and the shape is spherical, and the foamed nickle is supported on the surfaces of the ironcarbon particles through an acicular ferrite net; wherein the foamed nickle is prepared by adopting an electrodeposition technology; the foamed nickle adopts polyester-type polyurethane polyfoam withholes formed by mechanical blasting; and the polyfoam is composed of a dodecahedral structural element with a pentagonal window. By adopting the preparation method provided by the invention, the energy consumption of a purification system of waste water and waste gas is greatly reduced, no secondary pollution is involved during the process treatment, and the efficiency in purifying persistent organic pollutants is fully improved.

Description

technical field [0001] The invention belongs to the technical field of electrochemical treatment of organic waste water and organic waste gas, and in particular relates to a combined biological filler of nickel foam and iron-carbon and a preparation method thereof. Background technique [0002] Water and atmosphere are the important basis for human life and production, and are indispensable resources for human beings. However, since the 20th century, with the rapid development of industry, more and more untreated or partially treated industrial waste liquids have infiltrated into the ground, injected into rivers or lakes and other surface water bodies, and the types and quantities of waste water have increased rapidly, seriously It affects the water quality of aquifers and surface water bodies, aggravating the crisis of water resources, and the quality of water bodies in the world is generally threatened. Due to the complex composition of industrial wastewater, organic wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
CPCC02F3/005C02F2003/001
Inventor 刘楠李营营杨海龙陈润古德宁刘杨赵继红
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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