2. Biological pollution. Garbage contains a variety of pathogenic microorganisms. Garbage is often a breeding ground for mosquitoes, flies, cockroaches and mice, which will inevitably endanger the health of the general public.
3. Occupy a lot of land. According to the preliminary investigation, in 2003, two thirds of the 668 cities in China were surrounded by garbage belts. The national garbage depot covers an area of 800,000 mu.
Extended data:
Useful materials, such as paper, plastics, rubber, glass, bottles and cans, metals and waste household appliances, are separated from garbage for recycling and utilization, thus turning waste into treasure.
It not only improves the utilization level of garbage resources, but also reduces the amount of garbage treatment. It is an important way and means to realize waste reduction and recycling. After the garbage is classified and collected, it is convenient for different types of garbage to be classified and treated.
For example, organic waste compost fermentation, organic waste made into fertilizer for farmland and greening, inorganic waste landfill with no recycling value, and combustible waste incineration with high calorific value.
References:
Baidu encyclopedia-garbage