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Preparation method and application of a sludge carbon plate electrode

A plate electrode and sludge carbon technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as pollution, carbon emissions, and waste, and achieve the effects of simple and fast methods, increased power density, and low cost

Active Publication Date: 2017-03-29
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a long time, due to the lack of proper treatment, it has caused serious secondary pollution, wasted resources and emitted a large amount of carbon, making my country face the dual pressure of pollution prevention and carbon emission reduction

Method used

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  • Preparation method and application of a sludge carbon plate electrode
  • Preparation method and application of a sludge carbon plate electrode
  • Preparation method and application of a sludge carbon plate electrode

Examples

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preparation example Construction

[0024] A preparation method of sludge carbon plate electrode, comprising the following steps:

[0025] 1) Crush the sawdust and sieve;

[0026] 2) Dry the sludge, crush and sieve to obtain dry sludge powder;

[0027] 3) Mix wood chips and sludge dry powder according to the weight ratio of (0~30):100, add water with a weight of 20%~65% of the total weight of wood chips and sludge dry powder, mix well, and roll into shape;

[0028] 5) Take out the mixture formed by rolling and forming in the previous step, dry it, and carbonize it under anaerobic conditions to obtain the electrode material, that is, the sludge carbon plate electrode.

[0029] Preferably, the wood chips in the above step 1) are sieved by 20-60 mesh sieves.

[0030] Preferably, the sieving of the sludge in the above step 2) is through a 60-120 mesh sieve.

[0031] Preferably, the drying described in the above step 2) is drying at 50-80°C until the moisture content is below 5%.

[0032] Preferably, the sawdust ...

Embodiment 1

[0039] A preparation method of sludge carbon plate electrode, comprising the following steps:

[0040] 1) Crush the sawdust and screen it with a 40-mesh sieve to obtain sawdust that meets the size requirements;

[0041] 2) Take the waste sludge from the sewage plant, dry it at 50-80 ℃ and grind it into powder, and sieve it with a 100-mesh sieve to get the sludge dry powder;

[0042] 3) Mix wood chips and sludge dry powder in proportions of 0:100, 5:100, 10:100, and 20:100, respectively, and pour the mixture into the mold, add water equal to 50% of the total weight of the two, and mix well , rolling forming;

[0043] 4) Take out the above-mentioned rolling-formed mixture, dry it at 50-80 °C until the moisture content is below 5%, and then put it into the cremation furnace for high-temperature gradient anaerobic carbonization, specifically at 400 °C, 500 °C, and 700 °C. ℃, 900℃, anaerobic carbonization for 30min in turn, to obtain the electrode material, that is, the sludge ca...

Embodiment 2

[0047] A preparation method of sludge carbon plate electrode, comprising the following steps:

[0048] 1) Crush the sawdust and screen it with a 20-mesh sieve to obtain sawdust that meets the size requirements;

[0049] 2) Take the discarded sludge from the sewage plant, dry it at 50-80 ℃ and grind it into powder, and sieve it with an 80-mesh sieve to get the sludge dry powder;

[0050] 3) Mix sawdust and sludge dry powder evenly in the ratio of 2:100, 4:100, 6:100, 8:100 respectively, mix and pour into the mold, add water with a weight of 65% of the total weight of the two, and mix well , rolling forming;

[0051] 4) Take out the above-mentioned rolling-formed mixture, dry it at 50-80 °C until the moisture content is below 5%, and then put it into the cremation furnace for high-temperature gradient anaerobic carbonization, specifically at 400 °C, 500 °C, 700 °C °C, 850 °C in the four temperature gradients, followed by anaerobic carbonization for 50 minutes, to obtain the el...

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Abstract

The invention discloses a preparation method and application of a sludge carbon plate electrode. The preparation method comprises the steps of uniformly mixing smashed wood flour and dried sludge powder at certain weight ratio, pouring the mixture into a mold, adding with a certain amount of moisture, grinding and shaping; and taking out, drying, and carrying out high-temperature gradient anaerobic carbonization to obtain a sludge carbon plate electrode material. According to the prepared electrode material, waste sludge in a sewage plant and discarded biomass wood flour are used as raw materials, the cost is low, the preparation method is simple and rapid, and the method can provide a new way for the sludge resourced technology. The sludge carbon plate electrode can be applied to a microbial fuel cell, and compared with the traditional graphite electrode, the sludge carbon plate electrode has the power density of the battery, which is improved nearly twice.

Description

technical field [0001] The invention discloses a preparation method and application of a sludge carbon plate electrode. Background technique [0002] With the improvement of urban sewage treatment rate in our country, the treatment and disposal of a large amount of excess sludge has become a new environmental issue that needs to be solved urgently. Urban sludge resource treatment should be based on environmental sanitation and safety, resource recovery, resource input-output ratio and benefit-impact ratio. The sustainability and practicability of the sludge resource utilization scheme are evaluated in four aspects. As a major solid waste in my country, municipal sludge is produced in a large amount and is a biomass resource to be utilized. For a long time, due to the lack of proper treatment, it has caused serious secondary pollution, wasted resources and emitted a large amount of carbon, making my country face the dual pressure of pollution prevention and carbon emission r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M8/16
CPCH01M4/8875H01M8/16Y02E60/50
Inventor 袁勇刘婷唐家桓周顺桂
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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