Solumstrand Wastewater Treatment Plant case study


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Greater capacity - same floor footprint!
Solumstrand Wastewater Treatment Plant was built in 1991 with a capacity of 3.000 m3/h using primary calcium precipitation and seawater. A subsequent requirement for secondary treatment plus the need to increase the capacity to compensate for the closing of the Muusøya Treatment Plant, led to a major renewal and expansion of the plant in 2011. The new design capacity is 4.000 m3/h which includes both chemical precipitation and biological treatment.

Four of the existing 6 sedimentation basins were converted to Kaldnes MBBR reactors while the remaining two were rebuilt as dual-flow Actiflo’s, each with a capacity of 2.750 m3/h. This released more space in the basins that could be used for storing chemicals and dosage equipment. This combination of processes increased the capacity and transformed the treatment process without having to extend the plant area.

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