Method for preparing activated carbon with sludge as raw material

A technology for preparing activated carbon and activated carbon, which is applied in the field of activated carbon, can solve the problems of unstable properties, perishability, environmental pollution, etc., and achieve the effect of good adsorption effect and high porosity

Inactive Publication Date: 2016-12-07
句容市百诚活性炭有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Urban sewage treatment plants will produce a large amount of sludge while treating sewage. The sludge contains a l

Method used

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  • Method for preparing activated carbon with sludge as raw material

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Embodiment 1

[0017] A method for preparing activated carbon from sludge, comprising the following steps:

[0018] Step 1, taking sludge, centrifugal dehydration, drying, and grinding to obtain dry sludge;

[0019] Step 2, in parts by weight, mix 10 parts of dry sludge with 0.2 parts of zinc chloride, 0.5 parts of tartaric acid, 0.1 parts of tetrabutyl titanate and 3 parts of isopropanol, stand at 30°C for 30 hours, and dry to obtain Activated sludge;

[0020] Step 3, in parts by weight, mix 10 parts of activated sludge with 0.5 parts of citric acid, 0.3 parts of mannitol, and 0.1 parts of sodium alginate, and heat up to 600 ° C for 5 hours under nitrogen to carbonize to obtain crude activated carbon;

[0021] In step 4, the obtained activated carbon crude product is acid-washed, washed with water, and dried to obtain activated carbon.

[0022] Among them, the particle size of the dried sludge in step 1 is 1-2mm, the drying temperature in step 2 is 100°C, the heating rate in step 3 is 15°...

Embodiment 2

[0024] A method for preparing activated carbon from sludge, comprising the following steps:

[0025] Step 1, taking sludge, centrifugal dehydration, drying, and grinding to obtain dry sludge;

[0026] Step 2, in parts by weight, mix 10 parts of dry sludge with 0.4 parts of zinc chloride, 1.2 parts of tartaric acid, 0.3 parts of tetrabutyl titanate and 5 parts of isopropanol, stand at 40°C for 25 hours, and dry to obtain Activated sludge;

[0027] Step 3, in parts by weight, mix 10 parts of activated sludge with 0.8 parts of citric acid, 0.5 parts of mannitol, and 0.2 parts of sodium alginate, and heat up to 650 ° C for 3 hours under nitrogen to carbonize to obtain crude activated carbon;

[0028] In step 4, the obtained activated carbon crude product is acid-washed, washed with water, and dried to obtain activated carbon.

[0029] Among them, the particle size of the dried sludge in step 1 is 1-2mm, the drying temperature in step 2 is 100°C, the heating rate in step 3 is 15°...

Embodiment 3

[0031] A method for preparing activated carbon from sludge, comprising the following steps:

[0032] Step 1, taking sludge, centrifugal dehydration, drying, and grinding to obtain dry sludge;

[0033] Step 2, in parts by weight, mix 10 parts of dry sludge with 0.7 parts of zinc chloride, 1.7 parts of tartaric acid, 0.3 parts of tetrabutyl titanate and 6 parts of isopropanol, stand at 40°C for 30 hours, and dry to obtain Activated sludge;

[0034] Step 3, in parts by weight, mix 10 parts of activated sludge with 1.3 parts of citric acid, 0.5 parts of mannitol, and 0.4 parts of sodium alginate, and heat up to 600 ° C for 5 hours under nitrogen to carbonize to obtain crude activated carbon;

[0035] In step 4, the obtained activated carbon crude product is acid-washed, washed with water, and dried to obtain activated carbon.

[0036] Among them, the particle size of the dried sludge in step 1 is 1-2mm, the drying temperature in step 2 is 100°C, the heating rate in step 3 is 15°...

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Abstract

The invention provides a method for preparing activated carbon with sludge as the raw material. The method includes the steps that firstly, sludge is taken and subjected to centrifugal dewatering, drying and grinding, the obtained dried sludge is mixed with zinc chloride, organic acid, tetrabutyl titanate and isopropanol, and the mixture is subjected to standing for 20-30 h at 30-45 DEG C and dried; then, the activated sludge is mixed with citric acid, mannitol and sodium alginate, and the mixture is heated to 600-700 DEG C under the nitrogen condition to be carbonized for 2-5; finally, an obtained activated carbon crude product is subjected to acid washing, water washing and drying, and the activated carbon is obtained. The surface of the sludge activated carbon is of an irregular porous structure and has high porosity; the sludge activated carbon has a good adsorption effect when applied to treatment of activated brilliant red X-3B wastewater.

Description

technical field [0001] The invention belongs to the technical field of activated carbon, and in particular relates to a method for preparing activated carbon by using sludge as a raw material. Background technique [0002] Urban sewage treatment plants will produce a large amount of sludge while treating sewage. The sludge contains a large amount of organic matter and harmful substances. Its nature is very unstable and perishable. The environment is polluted. Therefore, it must be disposed of properly and safely. Sludge resource utilization can make full use of the useful components in sludge, turn waste into treasure, and produce better environmental protection and economic benefits. It has become one of the hot spots in the safe treatment and disposal of sludge. [0003] For the research on the resource utilization of the excess sludge produced by the biological method, there have been many utilization technologies, but any resource utilization technology has certain adv...

Claims

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Application Information

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IPC IPC(8): C01B31/12C02F1/28
CPCC02F1/283C01P2006/12C01P2006/14C01P2006/17
Inventor 林丽萍叶孙龙周敦满
Owner 句容市百诚活性炭有限公司
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