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Activated sludge sewage treatment plant in Massachusetts, US
Activated sludge sewage treatment plant in Massachusetts, US
Rural Kansas lagoon on private property
Rural Kansas lagoon on private property
Aeration tank of activated sludge sewage treatment plant (fine-bubble diffusers) near Adelaide, Australia
Aeration tank of activated sludge sewage treatment plant (fine-bubble diffusers) near Adelaide, Australia
A poorly maintained anaerobic treatment pond in Kariba, Zimbabwe (sludge needs to be removed)
A poorly maintained anaerobic treatment pond in Kariba, Zimbabwe (sludge needs to be removed)
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Sewage treatment plant (a type of wastewater treatment plant) in Cuxhaven, Germany
Sewage treatment plant (a type of wastewater treatment plant) in Cuxhaven, Germany
Aeration tank of an activated sludge process at the wastewater treatment plant in Dresden-Kaditz, Germany
Aeration tank of an activated sludge process at the wastewater treatment plant in Dresden-Kaditz, Germany
Clarifiers are widely used for wastewater treatment.
Clarifiers are widely used for wastewater treatment.
Primary settling tank of wastewater treatment plant in Dresden-Kaditz, Germany
Primary settling tank of wastewater treatment plant in Dresden-Kaditz, Germany