Sewage Flashcards
1
Q
What is sewage made up of?
A
Undigested food material
Contains biological molecules e.g. carbohydrates, proteins, nucleus acids and fats
2
Q
Explain the affect of sewage on bacteria?
A
Provides a good good source for nutrition, increases bacteria population.
3
Q
What happens to aquatic organisms when bacteria population increases in water?
A
The bacteria respire,
Increases B.O.D., using up oxygen,
Less oxygen for other organisms to respire aerobically,
Populations die
