Overview
TP 401 of Lapuan kt serves Lapua, Etelä-Pohjanmaa, Finland, treating wastewater for approximately 77,300 people. The plant operates under Finland's national implementation of the EU Urban Waste Water Treatment Directive.
TP 401 of Lapuan kt is a municipal wastewater treatment plant located in Lapua, within the Etelä-Pohjanmaa region of Finland. It serves a population of approximately 77,300, classifying it as a medium-to-large agglomeration under EU standards. The plant is situated near the Lapuanjoki river system, which drains into the Gulf of Bothnia. As a Finnish facility, TP 401 operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Finland's national regulations, enforced by the Regional State Administrative Agencies, mandate advanced treatment in sensitive areas. The plant's treatment processes are designed to meet these stringent standards, ensuring compliance with nutrient removal targets for the Baltic Sea catchment. The plant's treated effluent is discharged into the local watercourse, likely the Lapuanjoki river, which flows into the Gulf of Bothnia. This region is ecologically significant as part of the Baltic Sea drainage basin, where nutrient loading is a key concern. The plant plays a crucial role in protecting downstream aquatic ecosystems and supporting the health of the Bothnian Bay.
Environmental context
TP 401 of Lapuan kt discharges into the Lapuanjoki river system, which flows into the Gulf of Bothnia, a sub-basin of the Baltic Sea. The Baltic Sea is highly sensitive to nutrient pollution, and Finnish plants in this region are required to implement advanced treatment for nitrogen and phosphorus removal. The surrounding watershed supports diverse aquatic life and is an important area for migratory fish species.
Frequently asked questions
TP 401 of Lapuan kt is located in Lapua, in the Etelä-Pohjanmaa region of Finland, near the Lapuanjoki river.
The plant serves approximately 77,300 people, classifying it as a medium-to-large agglomeration under EU definitions.
Treated wastewater is discharged into the Lapuanjoki river system, which flows into the Gulf of Bothnia in the Baltic Sea.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), implemented by Finnish regulations. For agglomerations over 10,000 population equivalent, secondary treatment is required, with additional nutrient removal in sensitive areas like the Baltic Sea catchment.
Plants of this scale in Finland typically employ secondary biological treatment with nutrient removal (nitrogen and phosphorus) to meet EU and national standards, especially when discharging into the Baltic Sea basin.
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