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

Method for baking clay ceramsite by using biological sludge of sewage treatment plant

A sewage treatment plant and biological sludge technology, which is applied in the field of using sewage treatment plant biological sludge to burn clay ceramsite, can solve the problems of incapable of resource utilization, occupation of large land, serious environmental pollution, etc.

Inactive Publication Date: 2004-10-20
SOUTH CHINA UNIV OF TECH
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many urban biological sludge is only used for landfill treatment, which not only occupies a large amount of land, but also cannot be used as a resource, and the degree of environmental pollution is becoming more and more serious. The development and utilization of biological sludge waste from sewage treatment plants has become an urgent need. research problem

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
  • Method for baking clay ceramsite by using biological sludge of sewage treatment plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Example 1 wet sludge 34.90 30.35 11.58 4.44 1.82 0.95 2.54 1.47 5.16 72.50

Embodiment 2

[0041] Example 2 wet sludge 42.39 21.45 8.89 3.57 2.42 0.96 2.09 1.46 4.88 85.00

Embodiment 3

[0042] Example 3 wet sludge 56.90 7.08 3.39 2.63 1.52 1.10 1.75 1.25 7.61 77.30

[0043] Wet Clay 10.00 59.89 17.43 8.62 2.21 1.61 29.70

[0044] Iron powder 13.13 17.23 5.87 60.82 3.28 2.64

[0045] Limestone powder 39.70 6.98 1.34 0.69 49.28 1.32

[0046] Embodiment 1 Bituminous coal ash 47.73 28.68 8.83 5.99 2.48

[0047] Embodiment 2 Bituminous coal ash 55.38 25.15 6.56 4.85 2.93

[0048] Embodiment 3 Bituminous coal ash 63.46 22.65 4.73 3.79 2.37

[0049] Industrial analysis (weight %) and heat value of table 4 fuel

[0050] fuel f A f V f C f Q f DW (kJ / kg)

[0051] Embodiment 1 bituminous coal 4.19 16.04 26.90 56.47 27632

[0052] Embodiment 2 bituminous coal 5.45 20.24 27.15 53.63 26237

[0053] Embodiment 3 bituminous coal 6.58 23.19 28.03 49.10 25865

[0054] In Example 1, the flow rate of the wet biological sludge of Guangzhou Liede Sewage Treatment Plant in the screw feeder i...

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

No PUM Login to View More

Abstract

The present invention relates to a method for baking clay ceramsite by using biological sludge produced by sewage plant. Its raw material composition contains (wt%) clay 71-89%, dried biological sludge of sewage plant 6-21%, limestone 3-8% and iron powder 2-6%. This invention uses the biological sludge produced by sewage plant as useful resource to bake high-quality ceramsite instead of partial clay, and can save firing expansion agent and mineralizing agent so that it possesses the extensive application.

Description

technical field [0001] The invention relates to a firing technology of clay ceramsite, in particular to a method for firing clay ceramsite by utilizing biological sludge of a sewage treatment plant. Background technique [0002] Clay ceramsite refers to a kind of artificial inorganic light aggregate made by using clay as the main raw material, adding solid fuel (such as bituminous coal powder), mixing, forming into balls and sintering at high temperature. Because it has fine pores inside, it has the characteristics of light bulk density, high strength, small thermal conductivity, high refractoriness and good chemical stability, so it has better physical properties than natural aggregates, and can be used to prepare various high-strength and light-weight aggregates. Concrete and thermal insulation, sound absorption and sound insulation and other functional materials and products are widely used in construction, metallurgy, chemical industry, petroleum, agriculture and other d...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/28C04B14/34C04B38/06
CPCC04B2111/285C04B14/34C04B38/0665C04B14/28
Inventor 吴清仁吴建青邢益和李丽桃郭晓时陈炜刘秋荣何琼宇
Owner SOUTH CHINA UNIV OF TECH
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