Listen and read the textbook excerpt again. How is offal and viscera removed from water?

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Measurement techniques

Used water

Pollutants

__________

__________

__________

__________

__________

__________

__________

5. Listen and read the textbook excerpt again. How is offal and viscera removed from water?

Listening

6. Listen to a conversation between a student and a i professor. Choose the correct answers.

1 Which pollutant is a part of the FOG group?

A oils        С offal

В viscera    D solvents

2 How do workers manage solids that cannot be filtered out?

A they treat the water with viscera

В they use BOD

С they use a settling basin

D they process the water through screens

7. Listen again and complete the conversation.

Professor: What are the different kinds of 1 _________?

Student: First there are the unwanted parts of the fish such as 2__________ and viscera.

Professor: Excellent. How do we treat those?

Student: Screens and 3 _________ can remove those from the water.

Professor: Good. What other kinds of pollutants can you tell me about?

Student: There's also 4 ___________. That's the group of fats, oils, and grease. They can be cleaned with solvents

Professor: What about 5 ___________that cannot be filtered out?

Student: That's what the 6__________ _________ is for. We can measure the concentration of pollutants in the water as well using BOD and TSS.

Speaking

8. With a partner, act out the roles below based on Task 7. Then, switch roles.

USE LANGUAGE SUCH AS:

What kinds of ... ?

Would that be ... ?

It is important that these ...

Student A: You are a student. Talk to Student В about:

· different kinds of pollutants

· removing pollutants from wastewater

· measuring pollutants in wastewater

Student B: You are a professor. Talk to Student A about the reasons for removing pollutants from wastewater.

Writing

Познавательные статьи:



Где возникла философия и почему?

Относительная высота сжатой зоны бетона

Сущность проекции Гаусса-Крюгера и использование ее в геодезии

Тарифы на перевозку пассажиров