Masks rescue dust village

Can humanity's high technology enter heaven and earth, but can it not cure this dust?
This is a small village in Gansu, which is heavily polluted by gypsum flour mills. There are about six such gypsum powder mills distributed around villagers' living quarters. The local people said, “When I wake up every morning, the whole yard is filled with black and gray. If there is a bit of wind, it’s just a bunch of piles of clothes. At night, the clothes cannot dare to dry. Dare to open." Because of the environmental problems, when the children in the village were young, they often stayed in the house because they had poor resistance. They were basically not playing in the yard. “The gypsum powder plant produces not only black dust, but also the noise produced by the machine throughout the night. “We are farmers. We have no culture. We do not know that these dusts are harmless, but cough is a common cause of inhalation of excessive dust. Some things, said the local people. For the elderly, they all hope that children and grandchildren are full, but the elderly here are just the opposite. They are afraid of affecting future generations. Therefore, pregnant women are more worried about their pregnancy. A worker surnamed Wang told reporters : "There are many people in the village working in the gypsum powder factory. The gypsum powder factory did not sign a formal employment contract with us. We are all peasants, and the wages paid by others are fine. We are working in it. As far as the dust is harmless to the body, I don't know.” The factory here basically did not sign a formal labor service contract, and during the production process, it only gave workers some simple protective tools such as masks and gloves.
For the villagers living in such hostile environments, the protection of labor is really important. They are ordinary people and don’t have much knowledge. However, we know how to understand this, how can we stand by and watch the following? Anti-dust masks!
First of all, choose a dust mask to follow a few principles:
1. The mask has high dust blocking efficiency. The dust-blocking efficiency of a mask is based on its dust-blocking efficiency for fine dust, especially for respiratory dust less than 5 μm. In general gauze masks, the principle of blocking dust is mechanical filtering, that is, when the dust collides with the gauze, after some layers of barrier, some large particles of dust are blocked in the gauze. However, fine dust, especially dust less than 5 μm, will pass through the gauze mesh and enter the respiratory system. There are some dust masks on the market for sale. The filter material consists of fibers filled with permanent static electricity. Respirable dusts smaller than 5 μm will be attracted by the electrostatic material when they pass through the filter material. On the really play a role in blocking dust.
2. The degree of closeness of the mask and face shape is better. When the mask is not in close contact with the human face, dust in the air will enter the respiratory tract from the gap around the mask. Therefore, people should choose dust masks that fit their faces and wear dust masks correctly.
3. Wear should be comfortable, including small breathing resistance, light weight, wear hygiene, easy maintenance, such as wearing an arched dust mask.
Also, dust masks should be cleaned and disinfected daily. Both gauze masks and air filter masks can be disinfected with heat. The specific approach is:
1. Clean. Gently rub the gauze mask with warm water and soap. The bowl-shaped mask can be gently brushed with a soft brush, then rinsed with water. Please note that do not rub hard, because if the longitude and latitude of gauze is too large, it will lose the role of anti-impedance droplets.
2. Disinfection. Soak the clean mask in a 2% solution of peracetic acid for 30 minutes or boil in boiling water for 20 minutes or steam in a steamer for 15 minutes, and then dry it for use. This method is suitable for gauze masks and bowl-shaped masks.
3. Check. Before using it again, you should carefully check whether the mask and mask are still intact. For the gauze masks and masks, you can use the light transmission inspection method, that is, take a look before the lamp to see if there is any obvious light spot, and the middle part and the edge part are translucent. The rate is not the same. If there is doubt, it will be replaced with new ones. In any case, masks and masks are generally refreshed after 3 to 7 washings, and masks of particularly good quality can be washed 10 times. Activated carbon adsorption mask should pay attention to the regular replacement of activated carbon sandwich, if the activated carbon sandwich is not replaceable, used to be replaced within 7 to 14 days, this mask can not be cleaned and then reused.
China Labor Safety Net reminds everyone that in recent years, because dust causes too many respiratory diseases, long-term living in the dust-affected environment must pay attention to dust-proof work, and hope that the relevant departments can strengthen the environmental work.

China Labor Insurance Network