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Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12 Video Lecture

FAQs on Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12 Video Lecture

1. What is secondary sewage treatment?

Ans. Secondary sewage treatment is a process in which wastewater undergoes further treatment after primary treatment. It involves the use of microorganisms to break down organic matter present in the wastewater, resulting in cleaner water that can be safely released back into the environment.

2. How do microbes contribute to secondary sewage treatment?

Ans. Microbes play a crucial role in secondary sewage treatment. They are responsible for the breakdown of organic matter, such as human waste and other pollutants, present in the wastewater. These microorganisms utilize the organic matter as a food source and convert it into simpler compounds through processes like aerobic or anaerobic digestion, fermentation, and nitrification. This helps in reducing the organic load and harmful pollutants from the wastewater.

3. What are the benefits of secondary sewage treatment using microbes?

Ans. Secondary sewage treatment using microbes offers several benefits. Firstly, it helps in significantly reducing the organic load and pollutants present in wastewater, making it safer for the environment. Secondly, the treatment process helps in preventing the contamination of water bodies, thereby protecting aquatic life and ensuring a healthier ecosystem. Lastly, the treated wastewater can be reused for various purposes like irrigation, industrial processes, and even as a source of drinking water, reducing the strain on freshwater resources.

4. What are some common microbes used in secondary sewage treatment?

Ans. Several types of microorganisms are commonly used in secondary sewage treatment. These include bacteria, fungi, and protozoa. Bacteria like aerobic bacteria, facultative bacteria, and nitrifying bacteria are commonly used for organic matter breakdown and nutrient removal. Fungi, such as white rot fungi, are effective in degrading complex organic compounds. Protozoa, like ciliates and flagellates, help in further breaking down organic matter and controlling bacterial populations.

5. Are there any limitations or challenges in secondary sewage treatment using microbes?

Ans. While secondary sewage treatment using microbes is highly effective, there are a few limitations and challenges. Some of the challenges include the need for proper maintenance of treatment systems to ensure optimal microbial activity, the potential for the growth of pathogenic bacteria if the treatment process is not properly managed, and the cost associated with implementing and operating the treatment plants. Additionally, variations in the composition of wastewater can affect microbial activity, making it necessary to adjust treatment processes accordingly.

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	Nov 05, 2024 Last updated

Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12 for Class 122024 is part of Class 12 preparation. The notes and questions for Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12 have been prepared according to the Class 12 exam syllabus. Information about Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12 covers all important topics for Class 122024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Secondary Sewage Treatment - Microbes in Human Welfare, Biology, Class 12.

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