Pitt Town
 

Purification process

Pitt Town Water's processes meet strict Australian Guidelines for Water Recycling. Wastewater undergoes seven extensive filtration and purification processes including Membrane Bioreactor (MBR) and Ultraviolet (UV).

 

Purification Steps

  1. Wastewater screening
  2. Anaerobic processing
  3. Aerobic processing
  4. Chemical treatment
  5. Membrane filtration
  6. Ultraviolet disinfection
  7. Chlorination
1

Wastewater Screening

Plastics and rubbish are taken out of the wastewater.

2

Anaerobic Processing

After the wastewater is screened it enters the biological processing tank for anaerobic processing. Natural bugs break down the wastewater.

3

Aerobic Processing

Air is added to the wastewater, creating new bugs which continue the break down process.

4

Chemicals Added

Four chemicals - Sodium Hydroxide, Sodium Hypochlorite, Aluminium Sulphate and Acetic Acid - are added at different stages to balance and disinfect.

5

Membrane Fibres

Purified water is sucked through microscopic membranes that block out bugs - removing bacteria, pathogens and all other impurities. The holes in the fibres are so tiny, bacteria and viruses are unable to penetrate and are forced out keeping the recycled water clean.

 

6

Ultraviolet

Water goes through the Ultraviolet purification process neutralising any remaining impurities.

7

Chlorine

Chlorine is added to the water for the final purification process.

Recycled water storage

Once purified, the recycled water is held in two large storage tanks of 1.25 Megalitres or 1,250,000 litres each. It is then pumped to individual homes for use on the garden and to wash clothes and flush toilets.

Drinking water

Sydney Water provides Pitt Town Vermont households with drinking water. Households receive a separate drinking water bill from Sydney Water.