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Questions and Answers
What is the main advantage of the pulverization method of solid waste disposal?
What is the main advantage of the pulverization method of solid waste disposal?
- It reduces the volume of waste and makes it almost odorless (correct)
- It produces no residue or by-product
- It requires no skilled labor for its implementation
- It is the most economical method of waste disposal
What is the role of insecticides like DDT in the disposal by land filling method?
What is the role of insecticides like DDT in the disposal by land filling method?
- To prevent breeding of mosquitoes and flies (correct)
- To accelerate the decomposition of organic matter
- To reduce the volume of waste
- To neutralize harmful chemicals in the waste
What happens to the refuse during the disposal by land filling method?
What happens to the refuse during the disposal by land filling method?
- It is completely incinerated
- It settles down by 25 to 38% of its original height (correct)
- It is pulverized into powder form
- It is converted into stable compounds immediately
What is a demerit of the disposal by land filling method?
What is a demerit of the disposal by land filling method?
What is the purpose of the disposal into sea method of solid waste disposal?
What is the purpose of the disposal into sea method of solid waste disposal?
What is a demerit of the compositing method of solid waste disposal?
What is a demerit of the compositing method of solid waste disposal?
What is the main advantage of the incineration method of solid waste disposal?
What is the main advantage of the incineration method of solid waste disposal?
What is the purpose of pyrolysis in the solid waste disposal process?
What is the purpose of pyrolysis in the solid waste disposal process?
What happens to the solid waste during the disposal into sea method?
What happens to the solid waste during the disposal into sea method?
What is a merit of the land filling method of solid waste disposal?
What is a merit of the land filling method of solid waste disposal?
Study Notes
Pulverization Method
- The main advantage is the reduction in waste volume, making it easier to manage and dispose of solid waste.
- It allows for easier transportation and potential recycling of materials.
Insecticides in Land Filling
- Insecticides like DDT can leach into soil and groundwater during landfilling, posing environmental and health risks.
- They can persist in the environment, accumulating in ecosystems and potentially impacting wildlife.
Refuse in Land Filling
- Refuse decomposes slowly in landfills, generating methane gas and leachate that can contaminate surrounding areas.
- Over time, weight from overlying waste compresses lower layers, altering refuse characteristics and affecting decomposition rates.
Demerit of Land Filling
- Landfills require large areas of land and can lead to soil and groundwater contamination.
- They also contribute to greenhouse gas emissions, particularly methane.
Disposal into Sea
- The purpose is to manage large volumes of waste, particularly those that are non-biodegradable or unsuitable for landfilling.
- It helps in mitigating pollution on land but raises concerns about oceanic ecosystems.
Demerit of Composting
- One demerit is that it can attract pests and vermin if not managed properly.
- Improper composting conditions can lead to odor issues and greenhouse gas emissions.
Incineration Method
- The main advantage is significant volume reduction of solid waste, often by up to 90%.
- It allows for the recovery of energy from waste materials through the combustion process.
Pyrolysis Purpose
- Pyrolysis is used to convert organic materials into useful byproducts like biochar, oils, and gases.
- It reduces waste volume while also producing energy and raw materials for other uses.
Solid Waste Disposal into Sea
- Solid waste undergoes dissolution, degradation, or sedimentation in marine environments, depending on the material's nature.
- It can disrupt marine ecosystems and affect marine life through pollution.
Merit of Land Filling
- Landfilling can serve as a controlled environment for waste management, providing a systematic approach to waste disposal.
- It can be an effective way to reclaim land, with proper management and engineering practices.
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Description
Test your knowledge on methods of solid waste disposal with this quiz. Learn about pulverization, land filling, composting, incineration, pyrolysis, and disposal into the sea. See how much you know about these different waste management techniques.