Floating Brush Aerators are ideally suited for operation in municipal sewage treatment lagoons, especially shallow lagoon applications where vertical shaft-type aerators cannot operate.
The Lagoon Master Aerator is engineered for efficient aeration and mixing in shallow pond and lagoon wastewater treatment systems.
The DBS Hyperbolic Mixer is an advanced mixing solution for flocculation, suspension, homogenisation, and subsurface aeration in water and wastewater treatment processes.
The BSK® Turbine surface aerator delivers outstanding oxygen transfer and intensive mixing, supporting highly efficient biological treatment processes.
Applications
Real-world examples
In 2014-15 Water Corporation constructed Stage 1A of the East Rockingham WWTP, which included two (2) Oxidation Ditches (ODs). Each OD with approx. dimensions 115m L x 25m W x 6.1m D at (Top Water Level) TWL, was fitted with two (2) pier mounted surface aerators. Initially each OD would treat 3 ML/day increasing to 10 ML/day of screened & degritted sewage. The system was designed so that in subsequent upgrade stages Primary Settling Tanks will be installed upstream of the ODs, that will allow future treatment of up to 20 ML/d per OD. The NSA-series Low Speed Aerator model NSA5-300B (220 kW) supplied by DBS Manufacturing was selected for this project due to its low power usage and demonstrated performance in many similar applications.
East Rockingham, Western Australia
Lagoon Aeration for Municipal STP
A large Victorian Municipal Water Authority was upgrading its wastewater lagoons to cater for additional loads and required an aeration system to improve the wastewater treatment process. Key requirements for the aeration system included: • Shallow draft as the lagoons are only 1.5m deep • Quiet operations due to proximity of local residents (<70DbA) Aeration Demand requirements • BOD (Peak) – 231 kg O2/d, Actual Oxygen Transfer Rate (Peak) – 15 kg O2/hr
Victoria
