Overview
Birzu aglomeracija wastewater treatment plant serves the city of Biržai in Panevėžio apskritis, Lithuania. It treats wastewater from approximately 14,400 people as part of the country's municipal infrastructure.
Birzu aglomeracija is a wastewater treatment plant located in Biržai, a city in the Panevėžio apskritis region of northern Lithuania. The plant serves a population of approximately 14,400 people, placing it in the medium agglomeration category under EU classification. As a Lithuanian facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity are managed to comply with national regulations aligned with EU standards. The treated effluent from Birzu aglomeracija is discharged into the local watershed, which ultimately drains into the Baltic Sea via the Nemunas River basin. The plant plays a key role in protecting the region's water quality, supporting aquatic life in downstream rivers and contributing to the ecological health of the Baltic Sea.
Environmental context
The plant's discharge enters the local river system, which flows through the Nemunas River basin and eventually reaches the Baltic Sea. This watershed supports diverse aquatic ecosystems, including fish spawning grounds and migratory bird habitats. The Baltic Sea is a semi-enclosed brackish sea sensitive to nutrient pollution, making effective wastewater treatment critical for preventing eutrophication and maintaining marine biodiversity.
Frequently asked questions
Birzu aglomeracija is located in Biržai, a city in the Panevėžio apskritis region of northern Lithuania. The plant's address is Krantinės g., Biržai, Širvėnos seniūnija, Biržų rajono savivaldybė.
The plant serves approximately 14,400 people, classifying it as a medium-sized agglomeration under EU standards.
The treated effluent is discharged into the local river system, which flows into the Nemunas River basin and eventually reaches the Baltic Sea.
As a Lithuanian plant serving over 10,000 people, it falls under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment and potentially more advanced treatment if the receiving waters are sensitive.
Under EU regulations, plants of this scale typically employ secondary biological treatment. In sensitive areas, additional nutrient removal may be required to protect the Baltic Sea from eutrophication.
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