Coal transportation dust suppressant prepared based on microorganisms and use method thereof

Abstract

The invention discloses a coal transportation dust suppressant prepared based on microorganisms and a use method thereof. The dust suppressant is composed of a concentrated bacterial solution and a calcium ion solution. The bacterium of the concentrated bacterial solution is Bacillus mucilaginosus and the concentration of the concentrated bacterial solution is 10<10>-10<11>cells / mL, the calcium ion solution is a soluble calcium salt solution and has a calcium ion concentration of 0.1mol / L-2mol / L, and the volume ratio of the Bacillus mucilaginosus concentrated bacterial solution to the soluble calcium salt solution is 1:10-1.5:10. The method includes: mixing the Bacillus mucilaginosus and the soluble calcium salt solution uniformly in proportion, and spraying the mixture to the upper surface of coal evenly. Treatment of coal with a surface area of 1m<2> needs 2.5-4L of the dust suppressant, and according to the transportation needed time, the calcium ion solution concentration can be increased to adapt to the dust suppression time. The microbial dust suppressant provided by the invention has obvious suppression effect on flying dust generated in the coal transportation process, and has good environmental friendliness and economical efficiency.

Description

technical field [0001] The invention belongs to the interdisciplinary science and technology in the fields of microbiology and environmental protection, and relates to the preparation and application method of a novel microbial dust suppressant for coal transportation. Background technique [0002] China is a large coal-producing country, and 70% of the total coal transportation needs to be transported by rail. Among them, in 2005, the Daqin Railway alone transported more than 200 million tons of coal, while in 2014 the figure was already 400 million tons, four times the design capacity of that year. When coal is transported over long distances, uncovered carriages are usually used for the convenience of loading and unloading. According to the calculation based on the current speed of bulk freight trains in my country, which is generally 70km / h, the coal mine powder needs to withstand the wind speed erosion of 19.4m / s (under no wind conditions), not only the loss is huge (o...

AI Technical Summary

Problems solved by technology

The time for watering to suppress dust is limited and the effect is not obvious. When the water evaporates and then withstands high-speed wind erosion, the coal will be in an unrestricted state again, and it will be blown out of the car, causing loss and pollution

When using organic dust suppressant spraying to suppress coal dust, the dust suppression time cannot be adjusted, and the cost of dust suppression is relatively expensive. The production process of some dust suppressants will pollute the environment, and the use of multiple components increases the difficulty of use , and at the same time bring the inconvenience of automation, it is rare to actually get popularized and applied

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