TP 393 of Lappeenrannan kt, Lappeenranta

Overview

TP 393 of Lappeenrannan kt is a municipal wastewater treatment plant in Lappeenranta, Finland, serving approximately 120,000 people. It operates under Finland's implementation of the EU Urban Waste Water Treatment Directive.

TP 393 of Lappeenrannan kt is a wastewater treatment plant located in the Reijola district of Lappeenranta, in the Etelä-Karjala region of Finland. The plant serves a population of approximately 120,000, classifying it as a large agglomeration under EU regulations. As a facility in Finland, the plant operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, the directive requires secondary treatment as a minimum, with tertiary treatment in sensitive areas. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a substantial infrastructure. The plant discharges treated wastewater into the local water system, which ultimately drains into the Gulf of Finland via the Saimaa lake system and the Vuoksi River. This water body supports diverse aquatic life and is an important resource for the region. The plant plays a key role in protecting the downstream environment from nutrient pollution.

Environmental context

The plant is located within 50 km of the coast, and its treated effluent flows into the Saimaa lake system, which drains through the Vuoksi River into Lake Ladoga and eventually the Gulf of Finland. This watershed is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for birds. Nutrient loading from wastewater can contribute to eutrophication in the Baltic Sea, making effective treatment critical.

Frequently asked questions

The plant is located in the Reijola district of Lappeenranta, in the Etelä-Karjala region of Finland, at Myllymäenkatu in the Ihalaisen teollisuusalue industrial area.

The plant serves approximately 120,000 people, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive.

The treated wastewater is discharged into the local water system, which flows into the Saimaa lake system and ultimately reaches the Gulf of Finland via the Vuoksi River.

As a Finnish plant, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations over 15,000 population equivalent, with tertiary treatment in sensitive areas.

For large agglomerations in Finland, the EU Urban Waste Water Treatment Directive requires at least secondary treatment. Many plants also employ tertiary treatment to reduce nutrients, especially in areas draining to the Baltic Sea, which is sensitive to eutrophication.