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Method for preparing acetic acid activation sludge-based adsorbent

A technology for activating sludge and adsorbents, applied in chemical instruments and methods, and other chemical processes, can solve the problems of sludge energy treatment limitations, huge energy consumption, environmental pollution, etc., and achieve reduction of sludge drying process, Energy-saving and easy-to-operate effects

Inactive Publication Date: 2016-08-03
张能力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to requiring huge energy consumption, the conventional sludge drying treatment method causes a lot of pollution to the environment, such as a large amount of water vapor, sulfur and small molecule organic pollutants (odor) generated during the dewatered sludge drying process. Leading to different degrees of restrictions on sludge energy treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of acetic acid activated sludge base adsorbent, concrete steps are as follows:

[0020] (1) Take an appropriate amount of sludge, adjust the moisture content of the sludge to 88%, make mud, place it in a mashing homogenizer, take glacial acetic acid according to the mass ratio of mud and glacial acetic acid as 1:0.5, and add glacial acetic acid In the mud, place it in a mashing homogenizer, mash and homogenize for 20 minutes, ultrasonically oscillate for 40 minutes, seal it, and soak it at 50°C for 12 hours to obtain a homogeneous acetic acid activated sludge slurry;

[0021] (2) Place the homogeneous acetic acid activated sludge slurry in an oven with a temperature of 100°C and dry it at a constant temperature for 20 hours to obtain dry sludge with a moisture content lower than 5%, and then pulverize the dry sludge in a pulverizer, pulverize The particle size is 2mm;

[0022] (3) Screening, putting the dry sludge particles with a particle ...

Embodiment 2

[0028] A kind of preparation method of acetic acid activated sludge base adsorbent, concrete steps are as follows:

[0029] (1) Take an appropriate amount of sludge, adjust the water content of the sludge to 89%, make mud, place it in a mashing homogenizer, take glacial acetic acid according to the mass ratio of mud and glacial acetic acid as 1:0.6, and add glacial acetic acid In the mud, place it in a mashing homogenizer, mash and homogenize for 25 minutes, ultrasonically oscillate for 45 minutes, seal it, and soak it at 52°C for 13 hours to obtain a homogeneous acetic acid activated sludge slurry;

[0030] (2) Place the homogeneous acetic acid activated sludge slurry in an oven with a temperature of 105° C. and dry it at a constant temperature for 21 hours to obtain dry sludge with a moisture content lower than 5%, and then pulverize the dry sludge in a pulverizer, pulverize The particle size is 3mm;

[0031] (3) Screening, putting the dry sludge particles with a particle s...

Embodiment 3

[0037] A kind of preparation method of acetic acid activated sludge base adsorbent, concrete steps are as follows:

[0038] (1) Take an appropriate amount of sludge, adjust the water content of the sludge to 90%, make mud, put it in a mashing homogenizer, take glacial acetic acid according to the mass ratio of mud and glacial acetic acid as 1:0.8, and add glacial acetic acid In the mud, place it in a mashing homogenizer, mash and homogenize for 30 minutes, ultrasonically oscillate for 50 minutes, seal it, and soak it at 55°C for 14 hours to obtain a homogeneous acetic acid activated sludge slurry;

[0039] (2) Place the homogeneous acetic acid activated sludge slurry in an oven with a temperature of 110°C and dry it at a constant temperature for 22 hours to obtain dry sludge with a moisture content lower than 5%, and then pulverize the dry sludge in a pulverizer, pulverize The particle size is 4mm;

[0040] (3) Screening, putting the dry sludge particles with a particle size ...

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Abstract

The invention discloses a preparation method of an acetic acid-activated sludge-based adsorbent. The specific steps are as follows: taking an appropriate amount of sludge and glacial acetic acid to obtain a homogeneous acetic acid-activated sludge slurry; drying the homogeneous acetic acid-activated sludge slurry to obtain dry sewage Sludge and pulverize, and screen out sludge particles with a particle diameter of 1-2mm; add an activator solution compounded with zinc chloride and sulfuric acid, and perform pyrolysis reaction under nitrogen atmosphere to obtain sludge pyrolysis residue; wash with distilled water after grinding ,dry. The invention has simple manufacturing process and convenient operation. It adopts wet sludge to be directly pyrolyzed without drying treatment. The pyrolysis temperature is low, which belongs to low-temperature pyrolysis. While reducing the sludge drying process, it saves a lot of energy and is more energy-saving and environmentally friendly. The sludge adsorbent is prepared by the chemical activation method of the compound activator, and the carbon-containing compounds in the sludge are condensed into non-volatile polycondensation carbon through dehydration, condensation, moistening and expansion of chemical agents, so as to obtain adsorption with a well-developed porous structure. agent.

Description

technical field [0001] The invention relates to a sludge adsorbent, in particular to a preparation method of an acetic acid-activated sludge-based adsorbent. Background technique [0002] Sludge treatment is one of the challenging topics in the engineering field. With the rapid increase of sludge production and the advancement of urbanization, sludge treatment must follow stricter environmental standards and the treatment principles of "harmless, reduced, stabilized, and resourceful". Conventional methods of sludge treatment mainly include land use, landfill, and incineration. But there are certain defects and deficiencies, and it is difficult to meet the increasingly stringent environmental protection requirements. The pyrolysis method is to use the thermal instability of the organic matter in the sludge to heat and dry it under the condition of anaerobic or anoxic, so that the organic matter can be thermally cracked, and after condensation, the synthetic gas, bio-oil and...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20B01J2220/4887
Inventor 张能力
Owner 张能力
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