Multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter

A technology with high water content and treatment method, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of difficulty in popularization and application, immaturity, high price, etc., to increase sludge permeability, increase permeability and Dehydration, the effect of enhancing structural strength

Inactive Publication Date: 2020-07-10
中船勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these reduction treatment technologies are either immature, unable to achieve effective drainage and consolidation of municipal sludge, or expensive and difficult to popularize and apply

Method used

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  • Multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter
  • Multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter
  • Multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 , figure 2 and image 3 As shown, the multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter is as follows:

[0041] (1) Site preparation, remove the accumulated water on the surface of the site, clear the weeds in the site, and carry out preliminary site leveling.

[0042] (2) A layer of woven cloth (1) and a layer of geogrid (2) are laid on the site surface (14). The woven fabric can use 280g / m2 BBT PP60-42 / 3.8 woven fabric, and the geogrid can use TGSG20-20 geogrid.

[0043](3) Open holes (5) on the first layer of woven cloth (1) and geogrid (2), and mix 10% calcium oxide with the sludge by a light stirring machine according to the dry weight of the sludge.

[0044] (4) A layer of geotextile (3) geotextile cushion is laid on the geogrid (2). The geotextile can use 200g / m2 short-fiber needle-punched non-woven geotextile. The geotextile laying range should cover the entire reinforceme...

Embodiment 2

[0059] like figure 1 , figure 2 and image 3 As shown, the multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter is as follows:

[0060] (1) Site preparation, remove the accumulated water on the surface of the site, clear the weeds in the site, and carry out preliminary site leveling.

[0061] (2) A layer of woven cloth (1) and a layer of geogrid (2) are laid on the site surface (14). The woven fabric can use 280g / m2 BBT PP60-42 / 3.8 woven fabric, and the geogrid can use TGSG20-20 geogrid.

[0062] (3) Open holes (5) on the first layer of woven cloth (1) and geogrid (2), and mix 20% calcium oxide with the sludge by a light stirring machine according to the dry weight of the sludge.

[0063] (4) A layer of geotextile (3) geotextile cushion is laid on the geogrid (2). The geotextile can use 200g / m2 short-fiber needle-punched non-woven geotextile. The geotextile laying range should cover the entire reinforcem...

Embodiment 3

[0078] like figure 1 , figure 2 and image 3 As shown, the multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter is as follows:

[0079] (1) Site preparation, remove the accumulated water on the surface of the site, clear the weeds in the site, and carry out preliminary site leveling.

[0080] (2) A layer of woven cloth (1) and a layer of geogrid (2) are laid on the site surface (14). The woven fabric can use 280g / m2 BBT PP60-42 / 3.8 woven fabric, and the geogrid can use TGSG20-20 geogrid.

[0081] (3) Open holes (5) on the first layer of woven cloth (1) and geogrid (2), and mix 30% calcium oxide with the sludge by a light stirring machine according to the dry weight of the sludge.

[0082] (4) A layer of geotextile (3) geotextile cushion is laid on the geogrid (2). The geotextile can use 200g / m2 short-fiber needle-punched non-woven geotextile. The geotextile laying range should cover the entire reinforcemen...

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Abstract

The invention provides a multifunctional composite vacuum preloading treatment method for sludge with high water content and high organic matter. The multifunctional composite vacuum preloading treatment method comprises the following steps: a woven fabric and a geogrid are laid on the surface layer of a site; holes are formed in the woven fabric and the geogrid, and calcium oxide is added; a geotechnical cloth is laid on the geogrid; a foam board is laid on the geotechnical cloth; a Fenton agentia and peanut shells are added through an agentia adding hole; a plastic drainage board is struck;a pressurization pipe is buried; the top of the pressurization pipe is connected with a horizontal pressure pipe, and the pressurization pipe is externally connected with an air compressor; a drainagepipe network is laid; a final water outlet of the drainage pipe network is connected with a vacuum jet pump; a sealing system is constructed; the horizontal sealing system is made of double layers ofpolyvinyl chloride vacuum sealing films; after vacuumizing reaches stable full loading, the surface is overlaid with water for protection; the vacuum jet pump is laid; vacuumizing is tested; and a pressurization system is started. The amount of the sludge can be decreased, pathogenic bacteria of the sludge and toxicity can be further reduced, and finally treatment, disposal and resource utilization of the sludge are facilitated.

Description

technical field [0001] The invention relates to a multi-functional composite vacuum preloading treatment method for sludge with high water content and high organic matter, which belongs to the field of environmental rock and soil. Background technique [0002] Because the municipal sludge produced by the sewage treatment plant has a high water content (>80%), high compressibility, high organic matter content (up to 40-60%), low permeability coefficient, and a long-term continuous flow of new municipal sludge , The volume of sludge is large, so the pollution to the environment and potential safety hazards (fluid, instability) are relatively large. It is difficult to eradicate its adverse effects, the cycle is long, and the cost is high. [0003] At present, there is a huge amount of municipal sludge in my country, and the commonly used reduction treatment technologies include in-situ and ex-situ solidification technology, mud filter press technology, and adding water purif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D3/10E02D3/12
CPCE02D3/00E02D3/10E02D3/12
Inventor 李玉灿董天林彭伟颉伟郭小余
Owner 中船勘察设计研究院有限公司
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