Ventos aglomeracija Wastewater Treatment Plant, Venta, Lithuania

Ventos aglomeracija is a wastewater treatment plant located in Venta, Šiaulių apskritis, Lithuania. It serves a population of approximately 1,500 people, classifying it as a small agglomeration under EU classification. The plant is situated near the Venta River, which flows into the Baltic Sea. The plant employs advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 5,200 m³/day and a current discharge volume of 209.74 m³/day, the plant operates well within its capacity. As a Lithuanian facility, it adheres to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size, with advanced treatment required in sensitive areas. The treated effluent from Ventos aglomeracija is discharged into the Venta River, which flows through northwestern Lithuania and into Latvia, eventually reaching the Baltic Sea. This river supports diverse aquatic life and is an important ecological corridor. The plant's advanced treatment helps protect downstream water quality and the sensitive coastal environment of the Baltic Sea.

The Venta River, which receives treated effluent from the plant, flows through Lithuania and Latvia before emptying into the Baltic Sea. This river supports diverse fish populations and serves as a migratory route for salmonids. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it sensitive to nutrient pollution. Advanced treatment at the plant helps reduce nutrient loads, protecting the river and sea ecosystems.