Tivoliverket Wastewater Treatment Plant, Sundsvall, Sweden

Tivoliverket is a wastewater treatment plant located in Sundsvalls Gustav Adolfs distrikt, Sweden, serving the Sundsvall urban area. The plant handles wastewater for a population of approximately 75,000, classifying it as a medium-to-large agglomeration under EU regulations. As a Swedish facility, Tivoliverket operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's designed capacity is 1.00 (likely in a unit such as m³/s or similar), indicating it is sized to handle the local wastewater load. Treatment processes and specific permit details are managed by the relevant Swedish authorities. The plant discharges treated effluent into the local water system, which ultimately drains into the Baltic Sea via the Gulf of Bothnia. This coastal discharge location necessitates careful management to protect the sensitive marine environment of the Baltic Sea, which is known for its brackish waters and vulnerability to eutrophication.

Tivoliverket's treated effluent flows into the Sundsvall area's waterways, which drain into the Gulf of Bothnia, a northern arm of the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. The plant's discharge contributes to the local watershed, which supports diverse aquatic life and is an important area for migratory fish. Effective treatment is crucial to minimize eutrophication risks in this ecologically sensitive coastal region.