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"Garbage Disposal" Environment and Us PPT Courseware 4
What impact will the open dumping of garbage have?
Landfill waste simulation experiment: Method: Place washed fine pebbles about 3 cm thick into a jar, then add clean water so that the water is exactly halfway up the pebbles. Use tweezers to put a few balls of paper towels soaked in ink into the bottle near the wall, bury them with fine stones, and then slowly spray water on them. Observe the change in color and clarity of the water at the bottom of the bottle.
Schematic diagram of new landfill:
The garbage dump uses an impermeable liner to isolate the "garbage house" from the surrounding soil, and establishes a garbage filtrate collection tank and a treatment tank. It can collect and process the water that seeps into the garbage house from the ground and is contaminated by garbage; the fermentation of garbage piles will produce a large amount of gases, including flammable gases and toxic gases. The garbage dump is equipped with gas discharge pipes to eliminate harmful gases in a timely manner, and there are also detection Wells monitor soil and groundwater conditions near landfills at all times.
The advantages of garbage incineration: it occupies a small area, avoids the pollution of groundwater by garbage, and the heat generated can also be used to generate electricity.
There are also some problems with the incineration method. Not only will it consume a lot of electricity and leave residues, but if it is not properly controlled, it will also produce toxic substances and cause secondary pollution.
Ways to clean landfills
Advantages Effectively reduce the pollution of groundwater, soil and air caused by garbage
Disadvantages: Environmental pollution cannot be eradicated, and large amounts of soil will be permanently occupied.
Incineration method
Advantages: It occupies a small area, avoids garbage contamination of groundwater, and the heat generated is used to generate electricity.
Disadvantages: polluting the surrounding air,
judge:
1. For a long time, people have used the method of digging holes in the ground and filling them in to dispose of garbage.
2. Landfilling garbage is the safest and most effective method.
3. After the landfill is filled with garbage, parks and stadiums can be built on it.
4. After the garbage is landfilled, houses can be built on it.
5. Burning garbage will not cause pollution.
Talk about what each part represents in the landfill simulation experiment?
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For more information about the PPT courseware "The Environment and Our Garbage Disposal", please click the Environment and Our Garbage Disposal ppt tab.
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"Waste Disposal" Environment and Us PPT:
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