WATER TREATMENT CASE STUDY Rusko Water Treatment Works Tampere, Finland Situation: In the 1960’s, the City of Tampere, Finland began drawing water from Lake Roine when the quality of water from its original lake source deteriorated. A hori- zontal sedimentation basin was constructed in the early 70’s and a laminar flotation process was implemented in 1989. Activated carbon replaced sand filtration in 1996, but the City was still not satisfied w

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