Road dust suppressant for controlling inhalable particles in near-surface air and preparation method

A dust suppressant, near-surface technology, applied in separation methods, air quality improvement, chemical instruments and methods, etc., can solve problems such as inhalable particulate matter control, and achieve the effect of long duration of effectiveness and weak corrosion.

Active Publication Date: 2014-10-01
北京首创大气环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in road traffic, the dust emission caused by vehicles rolling over the road surface and wheel wear is a relatively large contribution rate among the m...

Method used

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  • Road dust suppressant for controlling inhalable particles in near-surface air and preparation method
  • Road dust suppressant for controlling inhalable particles in near-surface air and preparation method
  • Road dust suppressant for controlling inhalable particles in near-surface air and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 150 grams of calcium acetate magnesium salt mixture, wherein the ratio of calcium acetate to magnesium acetate is 6:4, 20 grams of calcium oxide, 0.2 grams of sodium lauryl sulfate, mix with 700 grams of tap water and stir evenly, and then prepare 3.5 grams of nano 2% aqueous fluorocarbon solution of grade titanium dioxide 3000 ml.

[0026] First, spray 3000 ml of titanium dioxide-containing glue evenly on 33 to 35 square meters of paved roads.

[0027] Then, after 20 to 120 minutes, according to the temperature and wind speed, it is determined according to the situation. After it is completely dry, it is sprayed evenly with a spraying amount of 30 to 35 ml of dust suppressant solution per square meter of road surface.

[0028] After 24 hours, tests for inhalable particulate matter and nitrogen oxides were carried out. The results were: TPM10 decreased by 78.83-86.96%; PM2.5 decreased by 42.50-61.88%; nitrogen oxide content decreased by 82.27-85.16%.

[0029] Th...

Embodiment 2

[0052] The main difference between this example and the above example is that the content of each component is different and the detection time is different, as follows: Weigh 100 grams of the calcium-magnesium acetate salt mixture, wherein the ratio of calcium acetate to magnesium acetate is 5:5, and Mix 300 grams of tap water and stir well. Spray 100 milliliters of road dust suppressant of the present invention on every square meter of road surface. Spray evenly on 10 square meters of paved roads, and conduct continuous testing in 4 weeks. The corresponding main testing methods and testing results are as follows and Table 3:

[0053] The particle evaluation method used in this embodiment is: the gravimetric method for measuring PM10 in ambient air under the HJ618 standard.

[0054] table 3

[0055]

[0056]

[0057] Among them, TPM10 decreased by an average of 78.06-90.16%.

[0058] The road dust suppression agent spraying construction method of this embodiment incl...

Embodiment 3

[0060] Weigh and weigh 122 grams of calcium magnesium acetate mixture, wherein the ratio of calcium acetate to magnesium acetate is 4:6, calcium hydroxide 4 grams, sodium hexametaphosphate 0.5 grams, alkylphenol polyoxyethylene ether TX-10 0.06 grams, 0.08 grams of sodium dodecylbenzene sulfonate, and then add 0.1 to 0.3 grams of nanoscale titanium dioxide, mix with 1800 grams of tap water and stir evenly. Spray 200 milliliters of road dust suppressant of the present invention on every square meter of road surface. Spray evenly on the paved road and detect continuously in 4 weeks. The corresponding main detection method is the same as the above-mentioned embodiment. The detection results of this embodiment are shown in Table 4:

[0061] Table 4

[0062]

[0063] Among them, TPM10 decreased by 67.52-86.78% on average, and nitrogen oxide content decreased by 81.94-87.76%.

[0064] Show by the detection result of above-mentioned each embodiment, road dust suppression agent o...

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Abstract

The invention relates to a road dust suppressant for controlling the inhalable particles in near-surface air and a preparation method thereof. The road dust suppressant comprises the following components in parts by weight: 100-150 parts of calcium magnesium acetate, 0.04-0.2 part of dust suppression aid and 300-1,800 parts of water, wherein the calcium magnesium acetate comprises 0.1-0.9 part of calcium acetate and 0.1-0.9 part of magnesium acetate; and the dust suppression aid is one of surfactants including sodium lauryl sulfate, alkylphenol polyoxyethylene ether TX-10, wetting agent X-405, sodium dodecyl benzene sulfonate, Tween and Span or a mixture of more than one of the surfactants. The road dust suppressant provided by the invention can effectively reduce the inhalable particles and harmful substances such as nitrogen oxides and sulfides on the road, and has the characteristics of environmental friendliness, low corrosion to vehicles and pavement, long-lasting effect and the like.

Description

technical field [0001] The invention relates to an environment-friendly dust-suppressing composition, in particular to a road dust-suppressing agent for treating inhalable particles in near-surface gas and a preparation method thereof. Background technique [0002] With the development of industrialization, air pollution has increasingly become an unavoidable and must-face environmental problem for the whole society. Among them, inhalable particulate matter is a serious pollutant that can directly endanger people's health. [0003] In the prior art, particulate matter (including liquid droplets) with a particle size of less than 10 microns is usually referred to as PM10, also known as inhalable particulate matter or floating dust. The smaller the particle diameter, the deeper it will enter the human respiratory tract. Particles with a diameter of 10 microns are usually deposited in the upper respiratory tract, while particles with a diameter of 5 microns can enter the deep...

Claims

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Application Information

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IPC IPC(8): C09K3/22B01D53/38B01D53/60B01D53/94
CPCY02A50/20
Inventor 郑向军霍茂清薛峰解刚杜志刚
Owner 北京首创大气环境科技股份有限公司
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