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Multi-pore cement concrete with photocatalytic purification effect

A cement concrete and multi-porous technology, which is applied in special compound water treatment, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of lack of purification ability, achieve simple operation, weaken the impact, and theoretically strong effect

Inactive Publication Date: 2019-07-09
河北曲港高速公路开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above technology found that the purification effect of porous cement concrete on organic pollutants, ammonia nitrogen pollutants and phosphorus pollutants is 10%-30%, which does not have effective purification ability, let alone effectively solve the pollution problems of different environments. like figure 1 Single particle size porous cement concrete on total phosphorus removal rate and figure 2 The removal rate of ammonia nitrogen by single particle size porous cement concrete shows that the rainfall intensity and time have little effect on the removal rate of pollutants in water

Method used

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  • Multi-pore cement concrete with photocatalytic purification effect
  • Multi-pore cement concrete with photocatalytic purification effect
  • Multi-pore cement concrete with photocatalytic purification effect

Examples

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Embodiment 1

[0031] A kind of porous cement concrete with photocatalytic purification effect, it comprises the following steps:

[0032] 1) For the porous cement concrete sample block, the aggregate should be single particle size or graded combination, the cement can be 42.5MPa Portland cement, the water-cement ratio should be 0.25, and the forming method is recommended to be obtained by vibratory compaction.

[0033] 2) Nano-titanium dioxide dispersion liquid P25 nano-titanium dioxide is dispersed in water to form a dispersion liquid with a concentration of 1.5g / L and 1.0g / L.

[0034] In fact, the nano-titanium dioxide dispersion is applied to the upper surface of the porous cement concrete.

[0035]Preferably, the porous cement concrete sample block is selected from any one or several of basalt, granite and quartzite.

[0036] Preferably, the particle size range of the porous cement concrete sample block is 4.75-9.50mm, and the specific surface area is 200-900m 2 / g.

[0037] Preferab...

Embodiment 2

[0047] A kind of porous cement concrete with photocatalytic purification effect, it comprises the following steps:

[0048] 1) The aggregate of the porous cement concrete sample block can be selected from a single particle size or a gradation combination. The cement is 52.5MPa Portland cement, the water-cement ratio is recommended to be 0.32, and the molding method is the vibration compaction method.

[0049] 2) The nano-titanium dioxide dispersion liquid is dispersed in water with P25 nano-titanium dioxide at a concentration of 0.5 g / L.

[0050] In fact, the nano-titanium dioxide dispersion is applied to the upper surface of the porous cement concrete.

[0051] Preferably, the porous cement concrete sample block is selected from any one or several of basalt, granite and quartzite.

[0052] Preferably, the particle size of the porous cement concrete sample block is 4.75-9.50mm, and the specific surface area is 200-900m 2 / g.

[0053] Preferably, the stormwater runoff pollut...

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Abstract

The invention provides a multi-pore cement concrete with photocatalytic purification effect. The upper layer of the multi-pore cement concrete is coated by nanometer titanium dioxide dispersion liquid. The purification effect of multi-pore cement concrete pavement on organic pollutant, ammonia nitrogen pollutant and phosphorus pollutant is improved. The invention can improve the purification effect of the multi-pore cement concrete sample block to the rainwater runoff pollutant, especially to the ammonia nitrogen pollutant and the organic pollutant after adding the nanometer titanium dioxide dispersion liquid, so as to greatly improve the purification effect on the ammonia nitrogen pollutant and the organic pollutant. Therefore, the purification method can directly and effectively improvethe purification effect of multi-pore cement concrete, in order to effectively alleviate the pollution problem of runoff sewage.

Description

technical field [0001] The invention belongs to the technical field of rainwater pollution, and in particular relates to a porous cement concrete with photocatalytic purification effect. Background technique [0002] At present, the global water resources are scarce, the environment is deteriorating, and the demand for ecological civilization construction is increasing. Therefore, research on the water purification performance of green and environmentally friendly porous pavement materials can make porous pavement effective in water resource conservation, ecological sustainability and environmental protection. Protection etc. play a role. Porous cement concrete is composed of cement, water, permeable concrete reinforcing agent (cementing material) mixed with high-quality single particle size or discontinuously graded aggregate, and is a mixed material with a certain porosity. The main requirement for porous permeable pavements in cities near the sea is that rainwater can in...

Claims

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Application Information

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IPC IPC(8): C04B41/65C02F1/30C02F101/16C02F101/10C02F101/30
CPCC04B41/5072C04B41/65C04B41/009C02F1/30C02F2101/16C02F2101/105C02F2101/30C02F2103/001C02F2305/10C04B28/04C04B38/00
Inventor 赵文忠李辉李新杰梁霄张超刘正一
Owner 河北曲港高速公路开发有限公司
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