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प्रश्न
State the scientific and eco-friendly methods of waste management.
उत्तर
The scientific and eco-friendly methods of waste management are:
- Waste separation: This is the first step in waste management. Classification of dry waste and wet waste is very important for further processing of waste.
- Composting: Decomposing decomposing kitchen waste in small pits in the backyard, garden or terrace is called composting. Good quality compost can be made by composting food scraps, fruit peels, vegetables etc.
- Vermicomposting: In this method, solid waste is rapidly decomposed with the help of earthworms. Manure obtained from vermicomposting is useful for agriculture as it is rich in nutrients.
- Secured landfill: In this method, the waste is kept in a special place safely away from human habitation. In such places, the ground is covered with plastic and clay so that the waste water does not seep into the ground.
- Pyrolysis: It is a method for solid waste management. It is the chemical decomposition of solid waste by heat under high pressure and the end products of pyrolysis are used to produce steam and electricity.
- The combustion of the furnace/bhashimation: This is an industrial method in which the waste is converted into a simple solid or aerodynamic form. In this method, the garbage in the furnace is infused at high temperatures. Generally, this method is used for biological medical waste.
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संबंधित प्रश्न
How can you help in reducing the problem of waste disposal? Give any two methods.
Students in a school listened to the news read in the morning assembly that the mountain of garbage in Delhi suddenly exploded and various vehicles got buried under it. Several people were also injured and there was traffic jam all around. In the brain storming session the teacher also discussed this issue and asked the students to find out a solution to the problem of garbage. Finally they arrived at two main points -one is self management of the garbage we produce and the second is to generate less garbage at individual level.
1) Suggest two measures to manage the garbage we produce.
2) As an individual, what can we do to generate the least garbage? Give two points.
3) List two values the teacher instilled in his student in this episode.
How will you register individual participation in solid waste management?
What do you mean by a scrubber?
How does an incinerator work?
Explain the role of government in waste management.
Study the image below and write down three items you have at home in each category of waste.
Biodegradable ______
Study the image below and write down three items you have at home in each category of waste.
Recyclable: ______
Study the image below and write down three items you have at home in each category of waste.
Non-recyclable: ______
The use of microorganism metabolism to remove pollutants such as oil spills in the water bodies is known as ____________.
Excessive exposure to ultraviolet radiation causes ______.
Unwanted materials pollute our ______.
The burning of solid waste in ______ is called incineration.
Garbage buried inside landfills remain here for a long time as they decompose very slowly and become _______.
Analogy:
Biodegradable waste: Leaves, Garden wastes:: Non-biodegradable waste: ______.
Give the Solid Waste Management (SWM) rules.
What are the two major types of solid wastes?
Provide a suitable term that expresses the meaning of the following statement.
An area where a lot of garbage is collected, spread out and covered with soil.
