Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of sludge-based activated carbon

A technology of activated carbon and sludge, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc.

Pending Publication Date: 2021-06-01
周跃男
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many researchers have studied the preparation method of sludge-based activated carbon, but there is still a big gap between the activated carbon produced and prepared at present and the commercial activated carbon.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of sludge-based activated carbon
  • Preparation method and application of sludge-based activated carbon
  • Preparation method and application of sludge-based activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of embodiment 1 sludge-based activated carbon

[0035] A preparation method of sludge-based activated carbon, comprising the steps of:

[0036] Add 4g of compound enzyme to 4kg of municipal sludge with a moisture content of 40% (the compound enzyme is formed by mixing cellulase, protease, and chitinase in a mass ratio of 3:1:1), and stir at 40°C 12h, to obtain enzymatic sludge;

[0037] Add earthworms to the enzymatic sludge (a total of 200g of earthworms with a body weight of 10-15g are added to each kilogram of enzymatic sludge), and under aerobic conditions (pass air into the enzymatic sludge at a flow rate of 1.5L / min) ) at 25°C for 3 days, take out the earthworms, and obtain the treated sludge;

[0038] Dry the treated sludge at 120°C to reduce the moisture content to below 15%, grind, sieve, and retain the sludge particles with a particle size of 100-200 mesh;

[0039] Add an activator to the sludge granules, the activator is ZnCl with a concent...

Embodiment 2

[0043] The preparation of embodiment 2 sludge-based activated carbon

[0044] A preparation method of sludge-based activated carbon, comprising the steps of:

[0045] Add 3g of compound enzyme to 4kg of urban sludge with a moisture content of 50% (the compound enzyme is formed by mixing cellulase, protease, and chitinase in a mass ratio of 3:2:1), and stir at 30°C 24h to obtain enzymatic sludge;

[0046] Add earthworms to the enzymatic sludge (a total of 300g of earthworms with a body weight of 10-15g are added to each kilogram of enzymatic sludge), and under aerobic conditions (pass air into the enzymatic sludge at a flow rate of 1.5L / min) ) were cultured at 20°C for 4 days, and the earthworms were taken out to obtain the treated sludge;

[0047] Dry the treated sludge at 150°C to reduce the moisture content to below 15%, grind, sieve, and retain the sludge particles with a particle size of 100-200 mesh;

[0048] Add an activator to the sludge granules, the activator is Zn...

Embodiment 3

[0052] The preparation of embodiment 3 sludge-based activated carbon

[0053] A preparation method of sludge-based activated carbon, comprising the steps of:

[0054] Add 2g of compound enzyme to 4kg of urban sludge with a water content of 45% (the compound enzyme is formed by mixing cellulase, protease, and chitinase in a mass ratio of 3:2:2), and stir at 35°C 18h to obtain enzymatic sludge;

[0055] Add earthworms to the enzymatic sludge (a total of 250g of earthworms with a body weight of 10-15g are added to each kilogram of enzymatic sludge), and under aerobic conditions (pass air into the enzymatic sludge at a flow rate of 1.5L / min) ) at 22°C for 3.5 days, take out the earthworms, and obtain the treated sludge;

[0056] Dry the treated sludge at 130°C to reduce the moisture content to below 15%, grind, sieve, and retain the sludge particles with a particle size of 100-200 mesh;

[0057] Add an activator to the sludge granules, the activator is ZnCl with a concentration o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of sludge-based activated carbon. The preparation method of the sludge-based activated carbon comprises the following steps: adding a compound enzyme into municipal sludge, and stirring to obtain enzymolysis sludge; co-culturing the enzymolysis sludge and earthworms, and taking out the earthworms to obtain treated sludge; drying, grinding and sieving the treated sludge to obtain sludge particles; adding an activating agent into the sludge particles, and activating to obtain activated sludge; performing acid leaching on the activated sludge to obtain acid-leached sludge; pyrolyzing and carbonizing the acid-leached sludge to obtain an activated carbon crude product; and washing and drying the active carbon crude product to obtain the active carbon. The invention further discloses the activated carbon prepared by the preparation method and application of the activated carbon in sewage treatment. The sludge-based activated carbon disclosed by the invention is large in specific surface area and high in iodine adsorption value, has a relatively good adsorption effect in sewage treatment, and realizes resource utilization of waste sludge.

Description

technical field [0001] The invention relates to the field of sludge resource utilization. More specifically, it relates to a preparation method and application of sludge-based activated carbon. Background technique [0002] With the improvement of human living standards and the development of industrial production, the amount of urban sewage generated is increasing. Therefore, the amount of urban sludge produced by sewage purification is increasing. Further diffusion of malodorous substances, pathogens, and organic pollutants in sludge will cause secondary pollution, which seriously threatens environmental safety and public health. How to properly dispose of sludge and effectively utilize it as a new resource, turning waste into wealth, has become an urgent environmental problem to be solved. [0003] Sludge contains a large amount of organisms and organic matter, has high calorific value and carbon content, and meets the objective requirements for preparing activated carb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B32/348C01B32/324
CPCC01B32/348C01B32/324
Inventor 周跃男
Owner 周跃男
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com