Primary treatment of wastewater

Introduction

This material is for students to use for learning about Primary treatment of wastewater

Task

The task is to learn and to answer the questions with yes or no about primary treatment of wastewater using video material. The questions you answered with no please correct.

https://www.youtube.com/watch?v=uME-5LP4KJo

 

Process

When using this material the students should wach the video and then answer to the questions that are given.

The questions:

  1. There are four processes of primary treatment of wastewater?
  2. In the first processe they use only chemical methods?
  3. A pump is always necessary?
  4. The third processes includes gravity?
  5. In the fourth processes they separate pieces which sink?
  6. After primary treatment of wastewater the water goes to secondary treatment of wastewater?
  7. The primary treatment of wastewater do nat include biological treatment?
  8. After the primary treatment they remove about 40-80% of solids?
  9. After the primary treatment they remove about 30-40% of oxygen demand?
  10. The secondary treatment is for removing the big things that are in the water?

Evaluation

You can get maximum of 20 points 2 points for each question. If the questions answer is yes you automatically get 2 points but if the questions answer is no you get 1 point for the answer and the second for writing the correction. Your  answer will not be the same as given but the key is that the idea is the same.

The answers:

  1. Yes
  2. No, in the first processe they use only physical methods.
  3. No, if all of the chambers are on the same floor.
  4. Yes
  5. No, in the fourth processes they separate pieces which float and sink.
  6. Yes
  7. Yes
  8. No, qfter the primary treatment they remove about 40-60% of solids
  9. Yes 
  10. No, the secondary treatment is for removing smaller things in the water. 

Conclusion

You have finished the task and if you got:

20-19 points you have understood the theme and done your task very well

18-15 points you have understood the theme and done your task well 

14-10 points you have understood the theme

9-5 points  your points are below average if you want to understand this theme better you shauld watch the video again

4-1 points you do not understand have primary treatment of wastewater works and you should watch the vidio again