1. The open-air dumping of garbage will release a lot of harmful gases such as ammonia and sulfide, which will seriously pollute the atmosphere and the living environment of the city.
2. Seriously pollute the water source. Solid waste not only contains pathogenic microorganisms, but also produces a large number of acidic and alkaline organic pollutants in the process of stacking corruption, and dissolves heavy metals in the waste, forming pollution sources of organic matter, heavy metals and pathogenic microorganisms. Leachate produced by rainwater leaching will inevitably cause serious pollution to surface water and groundwater.
3. 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.
4. Occupy a lot of land. According to preliminary investigation, in 2003, many of the 668 cities in China were surrounded by garbage belts, and the total garbage storage area in China was 800,000 mu.
5. Garbage explosion accidents keep happening. With the increase of organic matter content in the city, open-air decentralized storage has changed to centralized storage, which simply covers the anaerobic environment that is easy to produce methane gas, and is flammable and explosive.
waste sorting
The types of garbage can be divided into recyclable garbage, kitchen garbage, harmful waste and other garbage.
1. Recyclable materials mainly include waste paper, plastic, glass, metal, cloth, etc., mainly domestic garbage suitable for recycling.
2. Hazardous wastes refer to wastes that can directly or potentially endanger health or the natural environment, mainly including waste batteries, rechargeable batteries, button cell, waste paints, disinfectants, fluorescent lamps, mercury-containing thermometers, etc.
3. Other wastes include bricks and tiles, muck, toilet waste paper, paper towels and other wastes that are difficult to recycle, dust, food bags, etc. besides the above-mentioned types of wastes.
4. Kitchen waste refers to perishable domestic waste generated by daily domestic waste, mainly including food waste, leftovers, expired food, melon skin and stone, flowers and green plants, etc.