"One Day's Garbage" Environment and Our PPT Courseware

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"One Day's Garbage" Environment and Our PPT Courseware

Garbage classification table

Garbage is classified according to its material: plastic, metal, glass, paper, cloth and other garbage

According to whether it is toxic or not, toxic waste and non-toxic waste

According to whether it is perishable or not, it is divided into perishable garbage and non-perishable garbage.

According to the source of waste: domestic waste, industrial waste, agricultural waste

At present, the per capita daily domestic waste production in Beijing is 0.82 kilograms, and the city’s daily waste production is 11,500 tons. If calculated based on a truck with a load capacity of 4 tons, 2,875 trucks of garbage are transported every day.

Shopping malls, factories, schools, institutions, and agricultural production also produce a lot of garbage!

think about it

What harm does garbage do to the environment?

It pollutes the air, soil, and water bodies, and also attracts mosquitoes and flies, spreading diseases.

What experimental phenomena will we observe?

After spraying water, the original clear water at the bottom of the bottle turned into ink color.

——It means that if the garbage is buried underground, harmful substances will still leach out and pollute the groundwater.

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?

Garbage disposal

1. Sanitary burial method: As the name suggests, it is to find an open space and bury the garbage.

2. Incineration method: After sorting the garbage, send it to the incinerator for burning.

3. Fertilizer method: Stack the garbage to rot the fiber and organic matter of the waste and turn it into fertilizer to improve the soil.

Waste utilization

After sorting and processing by a new set of garbage treatment equipment, some organic matter from the kitchen, such as leftovers, leftover rice, vegetable leaves, etc., can be further processed into organic synthetic fertilizer. The sorted metal can be recycled as waste .The ash produced after incineration of inorganic substances is bonded with cement and sand with a die-casting machine and adhesive, and can be used as construction equipment; plastic products are mixed and homogenized to make semi-finished plastic products: plastic pellets for sale. A series of processes such as chemical fertilizers, sorting, and incineration can generate a lot of added value from useful resources in garbage, thereby obtaining good economic benefits.

Keywords: The environment and our teaching courseware, a day's rubbish teaching courseware, download the science PPT courseware of the second volume of the sixth grade of the Education Science Edition, download the sixth grade science slide courseware, download the environment and us PPT courseware, download a day's rubbish PPT courseware, .PPT Format;

For more information about the PPT courseware "Environment and our daily garbage", please click the "Environment and our daily garbage ppt" tab.

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Update Time: 2024-10-01

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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