Breathable dust is a fine dust particles suspended in air, which are invisible to the naked eye. It generally includes dust, smoke and other particles generated by mechanical movement, such as grinding, sanding and sawing, which are generated by motor vehicles and diesel engines, and dust generated by construction sites and coal mines.
Inhaling breathable dust can enter the human nasal cavity and the alveoli in the lungs, accelerate the loss of dust in the body, shorten the volume of breath, increase the heart rate and hinder its breathing. The specific effects of inhaled dust on humans depend on the size, shape and quantity of the dust particles. Under the effect of respiration, the suspended dust particles will enter into the airway and alveoli, which can cause clogging of airway and alveoli, reduce alveolar ventilation, change the structure of the bronchial tree, and cause bronchial asthma. The condition of bronchial asthma can be alleviated by symptomatic treatment, but the time of onset varies from person to person, and some people will present with rapid onset of severe respiratory tract obstruction. In severe cases, it may even cause pulmonary edema and lung heart failure leading to death.
In view of the health hazards of breathable dust, it is necessary to take effective prevention and control measures. In terms of dust prevention, it is necessary to do dustproof and wear protective masks according to the working environment. For example, coal mines should wear special dustproof masks to reduce the inhalation of breathable dust. In addition, it is recommended to ventilate and filter the air in the workplace, and increase the frequency of cleaning, so as to reduce the number of dust particles in the air.
In addition, it is also important to raise the environmental awareness of operators and raise the self-protection awareness of operators. For example, strengthening safety production knowledge training, teaching operators how to use safety equipment reasonably and correctly, timely elimination of dangerous factors, establishing a safety education system and so on.
To sum up, the hazards of breathable dust to humans are very serious. Therefore, it is necessary to take effective preventive measures, so as to protect the workers health and safety, reduce the occurrence of occupational diseases, and promote the physical and mental health of workers.
