Road dust suppressant for controlling inhalable particulate matter in near-surface air and preparation method thereof
A dust suppressant, near-surface technology, used 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.
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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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