A construction method for microbial solidification of garbage incineration ash permeable pavement

A technology of waste incineration ash and permeable pavement, applied in the field of solid waste resource utilization, can solve the problems of limited ecological and environmental benefits and application conditions, low consumption of solid waste ash and slag, and difficult to lock harmful components, and achieve good environmental protection and Ecological benefits, good economic benefits, and the effect of reducing high energy consumption

Active Publication Date: 2021-11-30
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Technical problem: The purpose of this invention is to overcome the defects of large consumption of traditional building materials, low consumption of solid waste and ash, difficulty in locking harmful components, limited ecological and environmental benefits and application conditions in the existing waste incineration ash road construction technology, and will Microbe-induced calcium carbonate crystallization technology is used in the construction of urban waste incineration ash roads, and solves the problems of resource utilization of urban waste incineration ash and the construction of urban permeable roads on the sea surface with ecological, environmental protection and energy-saving methods

Method used

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  • A construction method for microbial solidification of garbage incineration ash permeable pavement

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Embodiment 1

[0034] In this example, a construction method of microbial solidification of waste incineration ash permeable pavement is used in the construction of urban slow-moving greenways. After completion, the roads can be used for people to walk and non-motor vehicles to drive. The specific implementation includes the following steps:

[0035] a. Spread the unscreened garbage incineration ash on the leveled roadbed 1 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base course 2;

[0036] b. A layer of geotextile is laid on the upper surface of the subbase 2 as the filter layer 3;

[0037] c. Take the waste incineration ash with a particle size less than 10mm after screening, spread it on the filter layer 3 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base layer 4;

[0038] d. First, evenly spray CaCl on the upper surface of the base layer 4 with a volume equal to ...

Embodiment 2

[0047]In this example, a construction method of microbial solidification of waste incineration ash permeable pavement is used in the construction of parking lot pavement, and the completed parking lot is used for parking small motor vehicles. The specific implementation includes the following steps:

[0048] a. Spread the unscreened garbage incineration ash on the leveled roadbed 1 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base course 2;

[0049] b. A layer of geotextile is laid on the upper surface of the subbase 2 as the filter layer 3;

[0050] c. Take the waste incineration ash with a particle size less than 10mm after screening, spread it on the filter layer 3 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base layer 4;

[0051] d. First, evenly spray CaCl on the upper surface of the base layer 4 with a volume equal to 1 times the pore volume of t...

Embodiment 3

[0060] In this example, a construction method of microbial solidification of garbage incineration ash permeable pavement is used in the hardening construction of the public fitness square ground, and the completed site is used for people to carry out sports activities. The specific implementation includes the following steps:

[0061] a. Spread the unscreened garbage incineration ash on the leveled roadbed 1 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base course 2;

[0062] b. A layer of geotextile is laid on the upper surface of the subbase 2 as the filter layer 3;

[0063] c. Take the waste incineration ash with a particle size less than 10mm after screening, spread it on the filter layer 3 and roll it compactly, the compacted thickness is 20cm, and the controlled compaction degree is 95%, as the base layer 4;

[0064] d. First, evenly spray CaCl on the upper surface of the base layer 4 with a volume equal to 1...

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Abstract

A construction method for microorganism-solidified garbage incineration ash permeable pavement, the method steps comprising: a. spreading garbage incineration ash on the roadbed 1 and compacting it as a subbase 2; b. paving the upper surface of the subbase 2 Geotextiles are used as the filter layer 3; c. Take garbage incineration ash and spread it on the filter layer 3 and roll it compactly as the base layer 4; d. Spray CaCl on the upper surface of the base layer 4 first 2 solution, after it has completely infiltrated, spray the bacterial solution again, and let it stand for 2 hours; e. Spray the cementing liquid on the upper surface of the base layer 4, and let it stand for 12 hours; f. Repeat step e for 4 to 6 times; g. Mix sand, spread it on the base layer 4 and compact it as the surface layer 5; h. Spray CaCl on the upper surface of the surface layer 5 2 After the solution is completely infiltrated, spray the bacterial solution and let it stand for 2 hours; i. Spray the cementing liquid on the upper surface of the surface layer 5 and let it stand for 12 hours; j. Repeat step i 4 to 6 times to complete the construction.

Description

technical field [0001] The invention relates to a construction method for constructing a water-permeable pavement by using microorganisms to solidify municipal solid waste incineration ash, and belongs to the technical field of resource utilization of solid waste. Background technique [0002] The residual ash after municipal solid waste incineration for power generation is regarded as solid waste. At present, the main disposal method is to send it to landfill, which requires a large amount of landfill space. The municipal solid waste incineration ash as road construction material is an effective way for its reduction and resource utilization. The existing municipal solid waste incineration ash for road construction mainly includes ash-slag asphalt pavement, cement-stabilized ash-slag road base, mud-bound ash-slag pavement, and the like. Microbial-induced calcium carbonate crystallization technology (MICP technology) can also realize the cementation of bulk materials, but f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/22E01C7/32
Inventor 邵光辉陈相宇赵志峰
Owner NANJING FORESTRY UNIV
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