Biology Waste Water Story Part 8 (Sewage harming aquatic life) Class 7 VII | Summary and Q&A

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January 14, 2016
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Biology Waste Water Story Part 8 (Sewage harming aquatic life) Class 7 VII

TL;DR

Directly disposing sewage into water bodies can harm aquatic life by degrading oxygen levels and causing pollution.

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Key Insights

  • 💦 Disposing untreated sewage directly into water bodies harms aquatic life by depleting oxygen levels and causing bio degradation of organic matter.
  • 💦 Microbes in water consume oxygen while breaking down organic impurities, leaving insufficient oxygen for aquatic plants and animals.
  • 🤗 Open drains breed insects, mosquitoes, and diseases, making it essential to cover drains in localities.
  • 🚾 Throwing solid waste, oil, chemicals, pesticides, and medicines into sinks can lead to blockages, both in pipes and soil pores. This affects the transportation of sewage and the effective filtering of water through soil.

Transcript

hello friends this video on wastewater story part 8 is brought to you by example comm no more fear from exam so we have spoken so much about the sewage treatment plan now had these plans not been there do you have any idea that how much of harm the sewage can do to the aquatic life now if you do not treat the sewage before disposing it off into wat... Read More

Questions & Answers

Q: How does directly disposing sewage into water bodies harm aquatic life?

Directly disposing sewage into water bodies can harm aquatic life by degrading oxygen levels and leading to the death of plants, animals, and fish due to the lack of oxygen.

Q: What is the role of microbes in wastewater treatment?

Microbes in wastewater treatment plants consume the organic impurities in sewage, but they also use up the dissolved oxygen in the water, which is vital for aquatic plants and animals.

Q: How can we manage wastewater better as individuals?

We can manage wastewater better as individuals by ensuring that drains are covered, not throwing solid wastes into sinks, and avoiding the disposal of oil, chemicals, pesticides, and medicines into sinks.

Q: What are the disadvantages of throwing solid waste and oil into sinks?

Throwing solid waste and oil into sinks can cause blockages in pipes, leading to the inefficient transportation of sewage to treatment plants. Oil can also block soil pores, reducing the effective filtering of water through soil.

Summary & Key Takeaways

  • Disposing sewage directly into water bodies without treatment can harm aquatic life by depleting oxygen levels and causing bio degradation of organic matter.

  • Microbes in the water consume the organic impurities in sewage, but they also consume the dissolved oxygen, leaving little for aquatic plants and animals.

  • Lack of oxygen leads to the gradual death of aquatic life, making it crucial to never dispose of sewage directly into water bodies.

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