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3. Answer the questions to the text:

1. What is filtration? What does the process of filtration consist in?

2. Why may filtration be combined with other unit operations?

3. What is the main object of filtration?

4. What is a filter?

5. What is a filter cake?

6. What are filter media manufactured from?

7. What are continuous filters? How do continuous filters operate?

8. What are the main types of continuous filters?

9. What does the design of a rotary drum filter provide?

10. What are intermittent filters? How do intermittent filters operate?

  1. Match the words from the text with their synonyms on the right:

1) operation

a) aim

1)

2) simultaneously

b) persistent

2)

3) retain

c) restore

3)

4) object

d) grain

4)

5) coarse

e) at the same time

5)

6) cake

f) construction

6)

7) apparatus

g) action

7)

8) continuous

h) rough

8)

9) design

i) sediment

9)

10) particle

j) settling

10)

11) sludge

k) device

11)

12) recover

l) hold

12)

5. Fill in the gaps with the words from the text and translate them into Ukrainian:

Ukrainian translation

1. to process the feed __________

2. to provide __________ for the accumulated solids

3. visibly cover __________

4. two __________ groups

5. operate without __________

6. various __________ designs

7. producing __________ effluent

8. must be recovered from __________ liquor

9. solid-collecting __________

6. Change the following sentences according to the model.

Model A:

People can use heat, electricity and light for many purposes.

B:

People are able to use heat, electricity and light for many purposes.

1. We can produce heat by means of chemical action.

2. Chemists could obtain coke by heating coal in special forms of apparatus.

3. The workers can use this motor to drive compressors tomorrow.

4. Geologists could find oxides of many elements in the earth’s crust.

5. We can consume great quantities of oxygen in the burning of coal and wood.

7. Work in pairs. One of the student is a journalist from a scientific journal whose task is to write an article about innovative solutions to the filtration in industrial processes. The second student to be interviewed is an engineer working on filtration equipment design. Think over possible questions and answers. Act the interview out.

7. Pick up the key words from the text “Filtration and filters”. Make up your own sentences with them.

8. Write an abstract to the text “Filtration and filters”.

9. Get ready for presenting the topic “Filtration and filters” at the conference ”Innovations in Science and Engineering” based on the following questions of Task 3.

LESSON 5

1. Read and memorize the following words:

immiscible

незмішуваний, розшарований

tangentially

побічно, побіжно

vortex

вир, вихровий потік

induce

сприяти, призводити до …

regardless of

незалежно від …

outwardly

зовні

inwardly

всередині

spinner

обертач

impel

приводити в рух

permeability

проникність, прохідність

ratio

співвідношення, пропорція

adjustment

настройка

capability

робоча потужність

option

вибір, варіант вибору

micron

мікрометр, мікрон

footprint

площа, ділянка

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