The character, action, harm and management of sulfur dioxide

The character, action, harm and management of sulfur dioxide
I. Characteristics of sulfur dioxide:
1. Physical characteristics: Colorless and irritating toxic gases (such as the pungent smell you can smell when setting off firecrackers) are more dense than air and soluble in water;
2, chemical properties, acid oxide connectivity (similar to CO2), reduction, oxidation, bleaching.
Two, the role of sulfur dioxide:
1, wood, paper, wool, silk, rattan and other bleaching;
2, food, wine additives, function for anti-corrosion, anti-oxidation, whitening, color protection, etc.;
3, organic solvent/refrigerant/refined lubricating oil;
4, is the production of sulfuric acid, sulfur trioxide, sulfite and other raw materials;
5, fumigants, preservatives, disinfectants, reducing agents, pesticides, fungicides, etc.;
6, in pesticides, artificial fibers, dyes and other industries are also widely used.
Three, the harm of sulfur dioxide:
1. Acid rain, the main forming substance of air pollution, is harmful to aquatic organisms, soil, crops and buildings;
2, as an additive, not according to the standard application of sulfur dioxide will cause irreversible damage to the human body, such as liver, kidney damage, easy to cancer, etc.;
3. Poison can kill.
Iv. Sulfur dioxide control:
According to the sources of SO2 -- fossil fuels, industrial waste gas, industrial sulfuric acid, etc., the following treatment methods are adopted:
1. Control the source and actively develop new energy fuels to replace traditional energy;
2, control emissions, such as coal desulfurization, industrial exhaust gas treatment, etc.;
3. Be careful about buying, selling and using.