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Pollution intercepting type water permeable brick and preparation method thereof

A technology of permeable bricks and cement is applied in the field of green building materials to achieve the effects of large adsorption capacity, improved adsorption performance and simple preparation method

Inactive Publication Date: 2018-05-25
李思诺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the sewage intercepting permeable brick, that is, the permeable brick prepared by using fly ash, biomass and zeolite powder or sepiolite as the main material has the function of removing pollutants in rainwater

Method used

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  • Pollution intercepting type water permeable brick and preparation method thereof
  • Pollution intercepting type water permeable brick and preparation method thereof
  • Pollution intercepting type water permeable brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Crush the fly ash and zeolite to a particle size of 200-300 mesh, wash with water for 30 minutes, and then freeze-dry for 36 hours; crush the corn stalks to a particle size of less than 3mm, according to the mass ratio of 70:5:10:0.5:0.5 : 1: 0.5: 0.5 Weigh fly ash, biomass, zeolite powder, aluminum phosphate, magnesium aluminum hydrotalcite, bentonite, cement and magnesium lignosulfonate and mix evenly, add 10% of the total weight of the mixture in clean water , after mixing evenly, aging at 4°C for 12 hours, pressurized with a water-permeable stainless steel mold of 30×50×15cm, air-dried for 4 hours, dried at 105°C for 12 hours, and then heated at 600°C under the condition of nitrogen gas Roasted in a muffle furnace for 2 hours, and then cooled to room temperature with the furnace to obtain the finished sewage intercepting permeable brick. attached by figure 1 The SEM image of the permeable brick shows that the permeable brick is a smooth spherical particle with irre...

Embodiment 2

[0036] Crush the fly ash and sepiolite to a particle size of 200-300 mesh, wash them with clean water for 30 minutes, and then freeze-dry them for 48 hours; crush the rice husks to a particle size of less than 3mm, according to the mass ratio of 85:10:20:3 : 3:3:1:1 Weigh fly ash, biomass, sepiolite powder, aluminum phosphate, magnesium-aluminum hydrotalcite, bentonite, cement and quartz powder and mix evenly, add 5% of the total weight of the mixture in purified water , after stirring evenly, aging at 6°C for 24h, pressurized with a water-permeable stainless steel mold of 30×30×10cm, air-dried for 8h, dried at 120°C for 8h, and then heated at 400°C under the condition of nitrogen gas Roasted in a muffle furnace for 4 hours, and then cooled to room temperature with the furnace to obtain the finished sewage intercepting permeable brick.

[0037] Strength and water permeability test: Strength and water permeability test: According to the provisions of Appendix A in "Permeable Br...

Embodiment 3

[0040] The permeable brick prepared in Example 2 was soaked in 5mol / L hydrochloric acid for 24 hours after adsorption saturation, then rinsed with water until neutral, dried at 120°C for 12 hours, and then placed in a horse at 600°C under the condition of nitrogen gas. Furnace roasting 4h, with the furnace to cool to room temperature. attached by Figure 4 According to the SEM images of the regenerated permeable bricks, the water channels and particles of the regenerated permeable bricks have slight changes, the strength and water permeability of the permeable bricks change within 1%, and the adsorption capacity recovers to more than 95% of the newly prepared permeable bricks.

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Abstract

The invention discloses a pollution intercepting type water permeable brick and a preparation method thereof. The water permeable brick is prepared from aggregate, a binder and an additive in a ratiobeing 85-125:2.5-10:0.5-1.5 in parts by mass, wherein the aggregate is prepared from fly ash, biomass and zeolite powder or sepiolite powder in a ratio being 70-85: 5-10:10-20; the binder is preparedfrom aluminium phosphate, magnesium-aluminium hydrotalcite, bentonite and water in a ratio being 0.5-3: 0.5-3:1-3:0.5-1; the additive is magnesium lignosulfonate or quartz powder. Smashed materials are mixed uniformly, clean water is added, the mixture is uniformly stirred and aged, then extrusion forming, natural airing and heating curing are performed, and a product is subjected to roasting setting in a muffle furnace. The prepared water permeable brick is good in water permeability, high in strength and good in pollution intercepting effect, heavy metals and organic pollutants in rainwatercan be removed effectively, and the water permeable brick can be applied to rainwater collection for various grounds and has good economic and social benefits.

Description

technical field [0001] The invention relates to a sewage intercepting permeable brick and a preparation method thereof, specifically to a material formula of a permeable brick used to remove soluble heavy metals and organic pollutants in rainwater and a preparation method of pressure molding and medium-temperature firing, which belongs to green buildings field of materials technology. Background technique [0002] At present, large-scale paving of impermeable and hardened roads such as cement and asphalt on the surface of cities not only brings convenience to traffic, but also blocks rainwater from infiltrating the soil and conserving groundwater; the pavement water formed by rainwater runoff not only affects people's travel, but also Increased rainstorm runoff and aggravated urban drainage load; a large number of pollutants on the road surface are washed by rainwater and enter the water environment with runoff to form major urban non-point source pollution. Although the cu...

Claims

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Application Information

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IPC IPC(8): C04B33/135C04B33/132C04B38/08E01C5/04E01C11/22
CPCC04B33/132C04B33/1352C04B38/08C04B2235/3206C04B2235/3217C04B2235/3418C04B2235/3463C04B2235/447C04B2235/658E01C5/04E01C11/225Y02P40/60
Inventor 李思诺
Owner 李思诺
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