Sort the treatment processes

Exercise and reference answers

Items

1. Group

   Physical

   Item

   Bar screen

2. Group

   Physical

   Item

   Grit tank

3. Group

   Physical

   Item

   Skimmer

4. Group

   Biological

   Item

   Aerobic

5. Group

   Biological

   Item

   Anaerobic

6. Group

   Biological

   Item

   Earthworm

7. Group

   Chemical

   Item

   Chlorine

8. Group

   Chemical

   Item

   Ozone

9. Group

   Chemical

   Item

   Disinfect

Groups

1. Item

   Physical

2. Item

   Biological

3. Item

   Chemical

Instructions

Drop each clue onto physical, biological or chemical treatment.

Explanation