From primitive times people leave behind a lot of different waste.In the process of the development of civilization they became more and more dangerous for both man and nature alike.Now all the waste of our ability to live according to the degree of danger are divided into types and classes.
Hazard waste depends on their type.Wastes are household or chemical.Domestic, or MSW, too, are divided into safe and unsafe.MSW is considered safe paper or cardboard, wood, metals, textiles, rubber, glass and plastic, as well as food waste.Hazardous MSW are broken equipment and medical devices, which contain acid or mercury, and expired medicines and fertilizers.It's such a waste, and have the class of danger.
Hazardous MSW are divided into five categories or classes.The most innocuous belong to the first class.In fifth grade including waste, most of all polluting water and air.The list of such wastes listed mercury from broken thermometers and energy-saving light bulbs burned out, the remains of paints and varnishes, acid from the batteries or rechargeable batteries broken and unusable medicines.Outlived its tires and other waste allocated to other classes.Hazard №5 means that its member substances used special methods of disposal.
main danger associated with solid waste landfill are.Even relatively harmless waste, dumped in a heap, harm the environment.The only way to save the environment from the waste with any class of danger - Dispose of them properly.Ideally, all waste should be disposed of in separate containers and recycled as recycled.Another method of disposal - incineration - is very harmful, as contained in the smoke of carbon dioxide and dioxin poison the atmosphere and eating away at the ozone layer.
Chemicals also divided by class.Hazard chemicals depends on the size of the lesion, and, of course, of the damage, which is applied to the nature of these substances.Traditionally, chemicals have chetyrehklassovoe division, which is the most dangerous chemicals belongs to the first class.However, there are other classification systems.Thus, SD Zaugolnikov in 1967th developed a system for classifying poisons.Chemical substances distributed therein according to the concentration and amount of the lethal dose.There is also a system that separates poisons according to industrial application in the agricultural, medical, household, biological and military.Separate poisonous chemicals and effects on the body.Under this system, there are nerve poisons, liver, kidney, blood, gastrointestinal and lung.Military doctors divide toxic substances tactical action.
Although the type and class of danger, any waste harmful to nature, and thus undermining our health.Humanity is in danger of completely destroy the ecology of the planet, if you do not learn in time and properly dispose of hazardous substances.
