Catch the treatment steps

Exercise and reference answers

Items

1. Matches the category

   Yes

   Item

   Bar screen

2. Matches the category

   Yes

   Item

   Grit tank

3. Matches the category

   Yes

   Item

   Clarifier

4. Matches the category

   Yes

   Item

   Aeration

5. Matches the category

   Yes

   Item

   Sludge tank

6. Matches the category

   Yes

   Item

   Chlorine

7. Matches the category

   No

   Item

   Cooking oil

8. Matches the category

   No

   Item

   Paint

Category

Treatment steps

Instructions

Catch the stages of a wastewater treatment plant. Let the drain-cloggers fall.

Explanation