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
View PDF5 Cites 7 Cited by
  • 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

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] A preparation method of an acetic acid activated sludge-based adsorbent, the specific steps are as follows:

[0020] (1) Take an appropriate amount of sludge, adjust the moisture content of the sludge to 88%, make a slurry, place it in a smashing homogenizer, take the glacial acetic acid according to the mass ratio of the slurry and the glacial acetic acid to 1:0.5, and add the glacial acetic acid to it. In the mud, placed in a smashing and homogenizing machine, smashing and homogenizing for 20 minutes, ultrasonically oscillating for 40 minutes, airtight, and soaking for 12 hours at 50 °C to obtain a homogeneous acetic acid activated sludge slurry;

[0021] (2) The homogeneous acetic acid activated sludge slurry was placed in an oven with a temperature of 100 ° C for constant temperature drying for 20 hours to obtain dry sludge with a moisture content of less than 5%, and then the dry sludge was pulverized in a pulverizer, and pulverized The particle...

Example Embodiment

[0027] Example 2

[0028] A preparation method of an acetic acid activated sludge-based adsorbent, the specific steps are as follows:

[0029] (1) Take an appropriate amount of sludge, adjust the moisture content of the sludge to 89%, make a slurry, place it in a smashing homogenizer, take the glacial acetic acid according to the mass ratio of the slurry to the glacial acetic acid 1:0.6, and add the glacial acetic acid to it. The slurry was placed in a smashing homogenizer, smashed and homogenized for 25 minutes, ultrasonically vibrated for 45 minutes, sealed, and soaked for 13 hours at 52 °C to obtain a homogeneous acetic acid activated sludge slurry;

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

[0031...

Example Embodiment

[0036] Example 3

[0037] A preparation method of an acetic acid activated sludge-based adsorbent, the specific steps are as follows:

[0038] (1) Take an appropriate amount of sludge, adjust the moisture content of the sludge to 90%, make a slurry, put it in a smashing homogenizer, take the glacial acetic acid according to the mass ratio of the slurry to the glacial acetic acid of 1:0.8, and add the glacial acetic acid to it. The slurry was placed in a smashing and homogenizing machine, smashed and homogenized for 30 minutes, ultrasonically vibrated for 50 minutes, sealed, and soaked for 14 hours at 55 °C to obtain a homogeneous acetic acid activated sludge slurry;

[0039] (2) The homogeneous acetic acid activated sludge slurry was placed in an oven with a temperature of 110 ° C for constant temperature drying for 22 hours to obtain dry sludge with a moisture content of less than 5%, and then the dry sludge was pulverized in a pulverizer to pulverize The particle size is 4m...

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
Granularityaaaaaaaaaa
Diameteraaaaaaaaaa
Granularityaaaaaaaaaa
Login to view more

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

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): B01J20/20B01J20/30
CPCB01J20/20B01J2220/4887
Inventor 张能力
Owner 张能力
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap