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Black-odor riverway ecological transformation method utilizing building rubbish reclaimed materials and sludge

A technology for construction waste and recycled materials, applied in the fields of botanical equipment and methods, construction, artificial waterways, etc., can solve the problems of sacrificing the water environment and waste of resources, not in line with the basic concept of sustainable development, etc., to save management costs, The channel has strong anti-scour ability and the effect of reducing engineering cost

Pending Publication Date: 2020-07-31
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If construction waste and black and smelly river silt are not strictly controlled and properly disposed of, the development at the expense of the water environment and waste of resources does not conform to the basic concept of sustainable development
[0004] At present, there have been no reports on the ecological transformation project of black and odorous rivers using construction waste and silt as two solid wastes

Method used

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  • Black-odor riverway ecological transformation method utilizing building rubbish reclaimed materials and sludge
  • Black-odor riverway ecological transformation method utilizing building rubbish reclaimed materials and sludge
  • Black-odor riverway ecological transformation method utilizing building rubbish reclaimed materials and sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Level the slope protection slope of the black and odorous river, remove all rocks, broken mud, miscellaneous plants, and garbage, the slope ratio is 1:0.75, the slope is Class I, and the height is 4m. Dredging the river channel silt, removing the silt and leveling the bottom of the canal.

[0036] (2) The fine aggregate (particle size ≤ 2.36mm) and the solidified sludge after construction waste are screened are uniformly mixed by a mixer, and the mixing time is 180 seconds. After mixing evenly, polyacrylamide, carboxymethyl Cellulose sodium water retaining agent is modified by composite intercalation through aqueous solution polymerization. After the composite anti-seepage material is prepared, it is laid on the river slope protection and the bottom of the channel with a thickness of 8cm to form a composite anti-seepage layer for the river.

[0037] (3) Select the construction waste coarse aggregate to prepare a rectangular prefabricated porous concrete block with a...

Embodiment 2

[0047] (1) Level the slope protection slope of the black and odorous river, remove all rocks, broken mud, miscellaneous plants, and garbage, the slope ratio is 1:1.25, the slope is a first-class structure, and the vertical height is 3m. Dredging the black and odorous silt, removing the silt and leveling the canal bottom.

[0048] (2) The fine aggregate (particle size ≤ 2.36mm) and the solidified sludge after construction waste are screened are uniformly mixed by a mixer, and the mixing time is 180 seconds. After mixing evenly, polyacrylamide, carboxymethyl Cellulose sodium water retaining agent is modified by composite intercalation through aqueous solution polymerization. After the composite anti-seepage material is prepared, it is laid on the river slope protection and the bottom of the channel with a thickness of 8cm to form a composite anti-seepage layer for the river.

[0049] (3) Select construction waste coarse aggregate to prepare a regular hexagonal prefabricated poro...

Embodiment 3

[0058] (1) Level the slope protection slope of the black and odorous river, remove all rocks, broken mud, miscellaneous plants, and garbage, and build a stepped foundation along the slope with a slope ratio of 1:1.25 and a vertical height of 3m. Dredging the river channel silt, removing the silt and leveling the bottom of the canal. For slope drainage ditch construction, excavate a rectangular trench with a width of 20cm and a depth of 20cm.

[0059] (2) The fine aggregate (particle size ≤ 2.36mm) and the solidified sludge after construction waste are screened are uniformly mixed by a mixer, and the mixing time is 180 seconds. After mixing evenly, polyacrylamide, carboxymethyl Cellulose sodium water retaining agent is modified by composite intercalation through aqueous solution polymerization. After the composite anti-seepage material is prepared, it is laid on the foundation of river channel slope protection and channel bottom with a thickness of 8cm to form a composite anti-...

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Abstract

The invention provides a black-odor riverway ecological transformation method utilizing building rubbish reclaimed materials and sludge. Building rubbish fine aggregates and solidified sludge are combined to manufacture riverway tunnel bottom composite seepage-proofing materials to be paved at a riverway protection slope and the tunnel bottom; building rubbish rough aggregates are used for manufacturing prefabricated porous vegetation concrete blocks; after being solidified, building rubbish fine aggregates and riverway sludge are combined to manufacture green planting soil to serve as planting base materials; building rubbish fine aggregates and riverway sludge are used for prepaing unfired landscape / water purification ceramsite; building rubbish recovery steel is used for manufacturing prefabricated porous vegetation concrete block fixing parts; and large building rubbish is screened to be shaped to serve as building block materials of a side slope platform or protection feet. By means of the method, building rubbish reclaimed materials and riverway sludge are fully utilized, ecological reasonable transformation is carried out on black-odor riverway side slopes, riverway tunnelbottoms and other positions, the water quality of black-odor riverways is improved, meanwhile, the usage level of stone, cement and other traditional building materials is reduced, solid-waste resource utilization is completed, and remarkable economic and ecological benefits are achieved.

Description

technical field [0001] The invention relates to a method for ecological transformation of black and odorous rivers by using recycled materials from construction waste and silt, and belongs to the technical field of ecological transformation of black and odorous rivers. Background technique [0002] With the development of urbanization, a large amount of construction waste will be generated in the process of construction, demolition, decoration and renovation of construction projects, of which concrete and mortar blocks account for 30% to 40%, and bricks and tiles account for 35% to 45%. , Steel accounts for 10%, and others account for 5% to 8%. At present, China produces about 1.55 to 2.4 billion tons of construction waste every year. A large amount of construction waste basically stays in the simple landfill treatment method, which poses serious safety hazards and increases the difficulty of environmental governance. [0003] The appearance of black and smelly rivers is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/12E02B3/14E02B5/02A01G9/02C04B30/00C04B28/00C04B28/04
CPCA01G9/02C04B28/00C04B28/04C04B30/00E02B3/12E02B3/128E02B3/14E02B5/02C04B24/2652C04B18/167C04B18/0418C04B24/383C04B18/08C04B22/143C04B2103/0068C04B2103/42Y02A20/402
Inventor 祝建中汪存石朱秋子陈靓陈琦
Owner HOHAI UNIV
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