Sludge bagasse active carbon and preparation method thereof

A technology of bagasse and activated carbon, which is applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of poor adsorption performance of sludge-based activated carbon and use safety, so as to improve safety, The effect of excellent adsorption performance

Active Publication Date: 2013-08-14
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of poor adsorption performance of sludge-based activated carbon and use safety, and at the same time make better use of bagasse resources in the sugar industry, to utilize sludge and bagasse as resources, and to provide a Kind of sludge bagasse activated carbon and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Using the technologies of CN201210374893.7 and CN201210374993.X invented by the applicant to remove heavy metals from sludge;

[0032] (2) Take the bagasse and the sludge that has been removed from heavy metals and put them in the drying room respectively, and dry them at 105 oC, and control the water content to ≤ 12%;

[0033] (3) Crushing the dried sludge and bagasse with a pulverizer, sieving, and retaining the part with a particle size range of 20-60 mesh;

[0034] (4) Sludge and bagasse according to the mass ratio of 9:1, respectively weigh the pulverized sludge and bagasse into the mixer, and mix evenly;

[0035] (5) Put the mixture in the dipping tank, add ZnCl with a concentration of 3 mol / L according to the solid-to-liquid ratio of 1:3 2 Activate in the solution, stir while dipping, keep the temperature at 40 oC for 24 hours;

[0036] (6) The impregnated mixture is dehydrated by conventional methods and dried to constant weight;

[0037] (7) Put the acti...

Embodiment 2

[0040] (1) Using the technologies of CN201210374893.7 and CN201210374993.X invented by the applicant to remove heavy metals from sludge;

[0041] (2) Take bagasse and the sludge that has been removed from heavy metals, and place them in a drying room to dry at 105 oC, and control the water content to ≤ 11.5%;

[0042] (3) Crushing the dried sludge and bagasse with a pulverizer, sieving, and retaining the part with a particle size range of 20-60 mesh;

[0043] (4) Sludge and bagasse: Weigh the pulverized sludge and bagasse according to the mass ratio of 7:3 and put them into the mixer, and mix them evenly;

[0044] (5) Put the mixture in the dipping tank, add ZnCl with a concentration of 3 mol / L according to the solid-to-liquid ratio of 1:3 2 Activate in the solution, stir while dipping, keep the temperature at 40 oC for 16 hours;

[0045] (6) The impregnated mixture is dehydrated by conventional methods and dried to constant weight;

[0046] (7) Place the activated sample i...

Embodiment 3

[0049] (1) Using the technologies of CN201210374893.7 and CN201210374993.X invented by the applicant to remove heavy metals from sludge;

[0050] (2) Take bagasse and the sludge that has been removed from heavy metals, and place them in a drying room to dry at 105 oC, and control the water content to ≤ 10%;

[0051] (3) Crushing the dried sludge and bagasse with a pulverizer, sieving, and retaining the part with a particle size range of 20-60 mesh;

[0052] (4) Sludge and bagasse: Weigh the pulverized sludge and bagasse according to the mass ratio of 5:5 and put them into the mixer, and mix them evenly;

[0053] (5) Put the mixed material in the dipping tank, and add the activation solution (ZnCl 2 solution), stir while impregnating, and maintain the temperature at 40 oC for 24 h;

[0054] (6) The impregnated mixture is dehydrated by conventional methods and dried to constant weight;

[0055] (7) Place the activated sample in a pyrolysis furnace, heat it up to 600 oC for 60...

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Abstract

The invention relates to sludge bagasse active carbon and a preparation method thereof. The sludge bagasse active carbon is prepared from sewage treatment sludge and sugar refining industrial waste bagasse. The bagasse is added into the sludge to improve the carbon content of the sludge and the adsorptive property of sludge base active carbon, so that the problem that the adsorptive property of the sludge base active carbon is poor is solved; and the sludge is subjected to heavy metal removal to improve the using safety of the sludge base active carbon. The process comprises the following steps of: carrying out heavy metal removal on the sludge by adopting a certain technical means; drying the sludge and the bagasse, and then uniformly mixing the sludge and the bagasse according to a certain proportion; adding an activating agent ZnCl2 solution with a certain concentration to carry out immersion and activation; then carrying out pyrolysis under the protection of an inert gas; and washing and drying to obtain the active carbon. According to the preparation method, the active carbon is prepared from the sludge and the bagasse, the active carbon with good adsorptive property is prepared, and the resource utilization of the two types of industrial solid wastes is achieved at the same time, so that the sludge bagasse active carbon has good economic, social and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource treatment, and relates to the resource utilization of two kinds of solid waste, in particular to a sludge bagasse activated carbon and a preparation method thereof. Background technique [0002] Sewage treatment sludge is an inevitable product of urban sewage treatment. With the increase in the number of urban sewage plants and sewage discharge standards, the output of sludge has also increased sharply. At present, my country's annual sludge output is about 22 million tons. It is estimated that by the end of 2015, my country's annual output of dewatered sludge will exceed 26 million tons. Sludge treatment and disposal, especially resource utilization, is still an urgent problem to be solved. Sludge contains a large amount of organic matter, including 60-70% crude protein and about 25% carbohydrates. It has objective conditions for the preparation of activated carbon. Therefore, the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C02F11/00B09B3/00B01J20/20B01J20/30C01B32/324
Inventor 喻泽斌项国梁杨瓯蒙胡晓
Owner GUANGXI UNIV
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