Method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes

An iron-carbon micro-electrolysis and anti-hardening technology, which is applied in chemical instruments and methods, water pollutants, aerobic process treatment, etc., can solve the problems of wasting resources and energy, achieve energy saving, extensive treatment and pretreatment, and reduce maintenance problem effect

Active Publication Date: 2013-08-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, activated carbon and charcoal are fired industrial raw materials, which are used to re-fire fillers to waste resources and energy

Method used

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  • Method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to the ratio of mass parts, pulverize 40 parts of iron powder, 20 parts of lignin, 30 parts of red mud, and 30 parts of clay, mix the dried raw materials evenly in a mixer, and place the raw materials in a disc-type ball forming machine , Spray the binder diluent (diluted 6 times after boiled with 0.5wt% polyvinyl alcohol and 1.5wt% sodium carboxymethylcellulose aqueous solution) during the rolling process, so that the raw material is rolled into a ball shape. After the raw meal balls are dried for 24 hours, they are fired in a tube furnace with a nitrogen protection device. Firing method: put the raw material balls into the furnace, pass nitrogen gas, wait for 15 minutes after the temperature rises to 300°C, then raise the temperature to 800°C and stay for 25 minutes, close the tube furnace, take out the filler after cooling .

[0033]The performance parameters of the obtained filler are as follows: particle size: 4mm; bulk density: 870kg / m 3 ;Water Absorpt...

Embodiment 2

[0035] According to the ratio of mass parts, pulverize 45 parts of iron powder, 25 parts of lignin, 25 parts of red mud, and 30 parts of clay, mix the dried raw materials evenly in a mixer, and place the raw materials in a disc-type ball forming machine , in the process of rolling, spray through binding agent diluent (same embodiment 1), be that raw material is rolled into ball shape. After the raw meal balls are dried for 24 hours, they are fired in a tube furnace with a nitrogen protection device. The specific method of firing is as follows. Put the raw material balls into the furnace, feed nitrogen, set the temperature to 350°C, wait for 20 minutes after the temperature rises to 300°C, then raise the temperature to 900°C and stay for 30 minutes, close the tube type Furnace, after cooling, take out the stuffing.

[0036] The performance parameters of the obtained filler are as follows: particle size: 5mm; bulk density: 870kg / m 3 ;Water Absorption: 12%.

[0037] Example of...

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Abstract

The invention relates to a method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes. The method comprises the steps of mixing iron powder, lignin, red mud and clay, which are used as raw materials, in a mass ratio of (4-5):(2-3):(1-3):3, then pelleting, and burning under a reducing atmosphere. The particle size of the prepared anti-hardening granular ceramic iron-carbon micro-electrolysis filler is 4-6mm. When used for sewage treatment, the anti-hardening granular ceramic iron-carbon micro-electrolysis filler can improve the biodegradability of wastewater in a short time and reduce the CODCr (Chemical Oxygen Demand Cr) and toxicity of the wastewater, and is difficult to be hardened in use, long in service cycle and simple to maintain. The industrial wastes are used as raw materials, so that energy resources are saved, and the treatment of wastes with processes of wastes against one another is realized.

Description

technical field [0001] The invention relates to an anti-hardening granular ceramic iron-carbon micro-electrolytic filler and a preparation method thereof, belonging to the technical field of sewage treatment, especially the field of pretreatment of high-concentration refractory wastewater. Background technique [0002] Since the 1960s, with the rapid development of the chemical industry, a large number of artificially synthesized organic materials have been industrialized, such as rubber, plastic, nylon, synthetic fibers and other macromolecular organic substances. During the production of these organic materials, a large amount of high-concentration organic wastewater will be produced. According to the "Global Environmental Statistical Bulletin", as of 2008, the discharge of industrial organic wastewater in my country accounted for 44.3% of the total discharge of wastewater. Its components are complex, mostly aromatic compounds and heterocyclic compounds, and also contain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
CPCC02F1/46114C02F1/46176C02F2101/308C02F2101/38C02F2103/38C02F1/288C02F3/08C02F2201/46195Y02W10/10
Inventor 岳钦艳黄德毅高宝玉孙媛媛张晓伟高原傅凯放孔娇娇
Owner SHANDONG UNIV
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