Fact sheet
Typical wastewater treatment plant flow diagram
PRELIMINARY
TREATMENT
PRIMARY
TREATMENT
SECONDARY
TREATMENT
WATER RECYCLING
ODOUR CONTROL
RETURNED
TO WATER
CYCLE
OR
EVAPORATION
PONDS
OCEAN
RAW
SCREENING
WASTEWATER SYSTEMS
(SEWAGE)
GRIT TANKS
PRIMARY
SEDIMENTATION
AERATION
TANKS
SECONDARY
SEDIMENTATION
WATER
RECYCLED
FOR USE
OR
INDUSTRY
OR
WATERING
AGRICULTURE
Did you know that...
2828 | © watercorporation.com.au 2016
BIOSOLIDS
SLUDGE
TREATMENT
•
Wastewater treatment plants are not generic and vary from one
location to another.
•
Some plants have two separate components to the secondary
process and some have units combined into one.
•
Some wastewater treatment plants have an odour control process
to prevent odours affecting nearby residents.
•
Wastewater treatment plants work 24 hours a day, 365 days a year,
to provide an important sanitation service that protects public health
and the environment.