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Water and Wastewater Plant Directory
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Moorabbin, Victoria, Australia
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Mornington Sewage Treatment Plant
c/o South East Water
20 Corporate Drive
Moorabbin, Victoria, 3189
Australia
Contact Information:
Contact:
Email:
Telephone: 03 9552 3000
Fax:
Plant Operation: Municipal
Processing: Wastewater
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Web site:
http://www.southeastwater.com.au/sewl/upload/document/mornington_s.pdf
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Plant/Process Description:
Wastewater directed to the Mornington Sewage
Treatment Plant contains only small amounts of
contaminants (less than 0.1%). These contaminants
are progressively removed prior to the wastewater
being either discharged to Bass Strait,via the
South Eastern Outfall, or reclaimed.
To achieve this the treatment process at the
Plant incorporates screening, grit removal, an
activated sludge process and effluent
disinfection and polishing.
Raw sewage entering the Plant is screened to
remove rags and other large objects. The
screenings are then removed from site for
disposal at a secure landfill. The screened
sewage is directed to an aerated grit removal
unit to remove sand and other heavy inorganic
material prior to settling in a primary
sedimentation unit.
The primary sedimentation process captures a
large fraction of the solid material from the
sewage, these solids are sent directly to
anaerobic digestion. The primary effluent then
flows into the activated sludge process.
The activated sludge process uses bacteria to
stabilise the particulate and dissolved organic
matter. Air diffusers, supplied by blowers, are
used to supply the oxygen needed for this
biological process, which continuously creates
new cells, or activated sludge.The final stage of
the activated sludge process separates the
bacterial cells from the treated water in a
secondary clarifier. The solids recovered in the
secondary clarifier are recycled to the start of
the activated sludge process, while the treated
water is disinfected by contact with gaseous
chlorine.
To avoid the build-up of solids in the activated
sludge process, a portion of the activated sludge
mass is removed from the process for further
anaerobic digestion.The digested sludge from the
digesters is then dried in sludge drying pans
before the dried soil-like material is stockpiled
on-site prior to reuse.
The effluent from the secondary clarifiers is
stored temporarily in a holding basin prior to
disinfection. The treated water is drawn from the
holding basin and dosed with a small amount of
chlorine before it is passed through fine Copasac
bags as a final screening stage. The chlorine
oxidises any remaining pathogens contained in the
effluent before it is discharged into the South
Eastern Outfall or reclaimed. Wastewater from
this plant is used to irrigate a vineyard and a
rose nursery.
The Plant - At a glance
Commissioned: 1978
Population served: 50,800
Annual Average Flow: 12.8 megalitres (ML) per
day
Licenced Plant Capacity: 14.0 ML/d
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Owner:
South East Water
Web site:
http://www.southeastwater.com.au/
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Operating Company:
South East Water
Web site:
http://www.southeastwater.com.au/
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Directions:
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Disclaimer:
Water and Wastewater.com provides the information on
this page for reference purposes only. We do not certify
the accuracy of the information provided by third-party
individuals for this listing.
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