Waste management 8.2

Question 1

Sewage?

Answer 1

• Contains mostly water
• Mixture of everything washed down drains & toilets.
• Pipes and sewers take waste to treatment plant.

Question 2

Septic tank?

Answer 2

Where waste in rural areas in taken.

• a tank in the ground
• organic waste forms layer of sludge
• scum forms on top
• water in-between Is clean and usable.

Question 3

Steps to clean water?

Answer 3

1. Screening
2. Aeration
3. Settling
4. Filteration
5. Sterilisation
6. Output

Question 4

Recycled Sewage around the world

Answer 4

• drought and overpopulation making water supply hard.
• Most sewage atm is going to ocean
• singapore and california recycle it into drinking water.
• Proposal called ‘indirect potable re-use’ to integrate recycled water into water supply.
• City Toowoomba rejected this cause its ‘gross’.