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EGL has experience in a wide range of BNR
technologies including continuous flow activated sludge,
oxidation ditch/carousel activated sludge, sequencing batch
reactors (SBR’s), as well as biofilm processes (including
Kaldnes and Anox). Our local expertise is further backed
by a major international technology supplier who have delivered
over 50 BNR plants worldwide.
 EGL
has extensive expertise in BNR treatment ranging from advanced
process modeling through to design,
construction and operation of complete systems. Unlike
many other companies, EGL does not rely on a single type
of BNR
system. We will select and customize the system best suited
to the application, taking into account effluent requirements,
process robustness, whole of life cost and ease of operation.
How it Works
Traditionally, sewage was treated in biological
wastewater treatment systems designed only to remove solids
and dissolved organic pollutants (BOD). In order to cater
for ever increasing standards for wastewater treatment, modern
biological wastewater treatment systems have been developed
to also remove nutrients such as nitrogen and phosphorous.
In
Biological Nutrient Removal (BNR) treatment systems, the
wastewater is treated biologically in an optimised system
incorporating aerated and non-aerated zones
treatment steps.
References
Redcliffe Wastewater Treatment
Plant
West Wodonga Wastewater Treatment Plant
Luggage Point Wastewater Treatment Plant
South Caboolture Environment Wastewater Re-Use Plant
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