NPTEL Water and waste water treatment Week 7 Assignment Answers 2024

Introduction to NPTEL Water and Waste Water Treatment Course

The NPTEL Water and Waste Water Treatment course provide comprehensive insights into the principles and practices of managing water resources and treating wastewater effectively. Week 7 of the course involves assignments designed to test the students' understanding of key concepts discussed in the lectures.

NPTEL Water and waste water treatment Week 7 Assignment Answers 2024


2. Overview of Week 7 Assignment

In Week 7, students are tasked with answering questions that delve into various aspects of water treatment and wastewater management. These questions are crafted to assess the depth of understanding and application of theoretical knowledge into practical scenarios.

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. Select the correct option regarding statements below

Statement 1: Ionic strength increases with charge of coagulant.

Statement 2: Electronic double layer thickness decreases, by increasing coagulant dose till a certain limiting concentration and increases with excessive dosages.


Statement 2 is right and statement 1 is wrong

Statement 1 is right and statement 2 is wrong

Both statements 1 and 2 are wrong

Both statements 1 and 2 are right

Answer :- For Answer Click  Here 

3. Particle entrapment in the precipitates during the coagulation called_______


Compression of electronic double layer

Adsorption

Charge neutralization

Sweep coagulation

Answer :- For Answer Click  Here 

4. Choose the correct option regarding X, Y, Z shown in picture below


NPTEL Water and waste water treatment Week 7 Assignment Answers 2024

X->Zeta potential, Y->Diffuse layer, Z->Electrical double layer

X->Zeta potential, Y->Electrical double layer, Z-> Diffuse layer

X->Surface potential, Y-> Diffuse layer, Z-> Electrical double layer

X-> Surface potential, Y->Electrical double layer, Z-> Diffuse layer

Answer :- 

5. For a city of 6 lakh population, compute the fire demand in L/min using Kuichling’s formula


Answer :- 

6. The population of a town, as per census records, is given below for the years 1951 to 2011.


Year 1951 1961 1971 1981 1991 2001 2011

Population in lakhs 5 5.8 6.7 8.1 10 12.5 14.5


Use data and forecast the population for the year 2041 by using the geometric increase method


Answer :- For Answer Click  Here 

7. Use question number 6 data and forecast the population for the year 2041 by using the incremental increase method



3. Understanding Assignment Questions

H1: Question 1

Question: Discuss the Process of Coagulation in Water Treatment


H1: Question 2

Question: Explain the Concept of Activated Sludge Process


H1: Question 3

Question: Describe the Function of Sedimentation Tanks in Waste Water Treatment


4. Detailed Answers to Assignment Questions

H2: Question 1: Discuss the Process of Coagulation in Water Treatment

Coagulation is a vital step in water treatment, aiming to remove suspended particles that are not easily filtered out. In this process, chemicals known as coagulants are added to the water. These coagulants neutralize the electrical charge of colloidal particles, causing them to clump together and form larger particles called flocs. These flocs can then be easily removed through sedimentation or filtration processes.


H2: Question 2: Explain the Concept of Activated Sludge Process

The activated sludge process is a widely used biological treatment method for wastewater. It involves the use of microorganisms to break down organic matter present in wastewater. In this process, wastewater is mixed with a culture of microorganisms in aeration tanks. These microorganisms consume organic pollutants as their food source, effectively purifying the water. The treated water is then separated from the sludge and discharged into the environment.


H2: Question 3: Describe the Function of Sedimentation Tanks in Waste Water Treatment

Sedimentation tanks play a crucial role in wastewater treatment by allowing suspended particles to settle at the bottom of the tank. As wastewater flows into the sedimentation tank, it undergoes a period of calm, allowing gravity to pull down the heavier particles. These particles form a sludge layer at the bottom of the tank, while clearer water rises to the top. The clarified water is then collected and subjected to further treatment processes, while the sludge is removed for disposal.


5. Key Concepts and Terminologies

Throughout the assignment, several key concepts and terminologies related to water and wastewater treatment are discussed. These include coagulation, flocculation, sedimentation, activated sludge, aeration, and more. Understanding these concepts is essential for effectively managing water resources and ensuring environmental sustainability.


6. Importance of Understanding Water and Waste Water Treatment

The proper treatment of water and wastewater is critical for maintaining public health, protecting the environment, and ensuring sustainable development. By understanding the principles and practices of water and wastewater treatment, individuals can contribute to the preservation of water resources and the mitigation of pollution.


7. Conclusion

In conclusion, the Week 7 assignment of the NPTEL Water and Waste Water Treatment course provides students with an opportunity to demonstrate their understanding of key concepts in water treatment and wastewater management. By successfully completing these assignments, students can deepen their knowledge and contribute to addressing the global challenges associated with water scarcity and pollution.


FAQs (Frequently Asked Questions)

Is the NPTEL Water and Waste Water Treatment course suitable for beginners?


Yes, the course is designed to cater to both beginners and those with prior knowledge in the field of water treatment.

Are there any prerequisites for enrolling in the course?


While there are no specific prerequisites, a basic understanding of chemistry and environmental science would be beneficial.

How are the assignments evaluated?


Assignments are typically evaluated based on the accuracy and depth of the answers provided, as well as the clarity of explanation.

Can the course be completed online?


Yes, the NPTEL courses are available online, allowing students to study at their own pace from anywhere in the world.

Is certification provided upon completion of the course?


Yes, students who successfully complete the course and pass the assessments are eligible to receive a certificate from NPTEL.

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