Class 7 Exam > Class 7 Videos > Science Class 7 > Working of a Wastewater Treatment Plant
Working of a Wastewater Treatment Plant Video Lecture | Science Class 7
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FAQs on Working of a Wastewater Treatment Plant Video Lecture - Science Class 7
| 1. How does a wastewater treatment plant work? |  |
Ans. A wastewater treatment plant works by removing pollutants and contaminants from wastewater to make it safe for disposal or reuse. The process involves several stages such as preliminary treatment, primary treatment, secondary treatment, and tertiary treatment. During these stages, physical, chemical, and biological processes are used to remove solids, organic matter, and harmful microorganisms from the wastewater.
| 2. What is the purpose of a wastewater treatment plant? | |
Ans. The purpose of a wastewater treatment plant is to protect the environment and public health by treating and purifying wastewater before it is discharged back into natural water bodies or reused. By removing pollutants and contaminants, the plant helps prevent water pollution, reduces the spread of diseases, and ensures the sustainable use of water resources.
| 3. What are the main components of a wastewater treatment plant? | |
Ans. The main components of a wastewater treatment plant include screens or grates to remove large debris, grit chambers to remove sand and grit, primary clarifiers to settle and remove suspended solids, aeration tanks for biological treatment, secondary clarifiers to separate solids from treated water, and disinfection units to kill harmful microorganisms. Additionally, there are also sludge treatment units for handling and processing the solid byproducts generated during the treatment process.
| 4. How long does it take to treat wastewater in a treatment plant? | |
Ans. The time taken to treat wastewater in a treatment plant can vary depending on various factors such as the size of the plant, the complexity of the treatment process, and the quality of the incoming wastewater. Generally, it can take anywhere from a few hours to several days for wastewater to undergo complete treatment and purification in a treatment plant.
| 5. What happens to the treated wastewater after it leaves the treatment plant? | |
Ans. After leaving the treatment plant, the treated wastewater is usually discharged into nearby water bodies such as rivers, lakes, or oceans. However, in some cases, the treated wastewater may also be reused for various purposes such as irrigation, industrial processes, or groundwater recharge, depending on the quality of the treated water and local regulations.
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Nov 21, 2024 Last updated |
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