Pollution-free road surface dust depressor and application method thereof

Abstract

The invention relates to a pollution-free road surface dust depressor and an application method thereof. The pollution-free road surface dust depressor is prepared from the following components in parts by weight: 2.0 to 4.0 parts of a moisture absorbent, 0.5 to 2.2 parts of a humectant and 0.3 to 1.0 part of a binding agent. After the road surface dust depressor provided by the invention is sprayed, the average reduction capability of PM10 (Particulate Matter 10) can reach 36.8mu g / m<3> and the average reduction capability of PM2.5 (Particulate Matter 2.5) can reach 20.1mu g / m<3>. When the road surface dust depressor provided by the invention is sprayed, the condition that the concentration of particulate matters is increased, caused by a vehicle, can be effectively inhibited, and the concentration of atmospheric particulate matters in a near road surface range can also be reduced. A sprayed road surface still has a good dust depression effect, and the effective time can last for 2 to3 weeks.

Description

【Technical field】 [0001] The invention belongs to the technical field of environmental protection. More specifically, the present invention relates to a non-polluting road surface dust suppressant, and also relates to a method for using the non-polluting road surface dust suppressant. 【Background technique】 [0002] As we all know, dust pollution is one of the world's public hazards, and road dust is an important part of dust pollution. As far as the current situation of road dust is concerned, open-pit mine roads are generally earth-rock or gravel roads with low grade and poor quality. The main problem of this kind of road is dust suppression on the road surface. When heavy-duty trucks are running, the dust content in the air is as high as 0.5-1g / m 3 Above, hundreds of times more than the national health standards, resulting in serious dust pollution. Urban hardened road dust is the main source of urban secondary dust. At present, people have carried out a lot of resear...

AI Technical Summary

Problems solved by technology

However, there are still some technical problems in these dust suppressants, for example, some dust suppressants have poor bonding and adsorption effects, short lasting moisturizing effect, some hygroscopic salts are corrosive, and the cost of dust suppression is high

[0003] In addition, at present, water spraying method is mainly used at home and abroad to suppress dust on the road surface. Sprinkling water is simple and convenient, but the evaporation speed is fast and the action time is short, which cannot meet the long-term and effective dust suppression requirements for roads with large dust thickness.

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