Overview
Ahtme wastewater treatment plant in Kohtla-Järve, Estonia, is a closed facility with advanced treatment and a designed capacity of 19,000 m³/day. It is located within 10 km of the coast.
Ahtme is a former wastewater treatment plant located in the Ahtme district of Kohtla-Järve, in Ida-Viru County, Estonia. The facility was designed with a capacity of 19,000 cubic meters per day and employed advanced treatment processes. It is situated near the Baltic Sea coast, within 10 km of the shoreline. As a closed plant, Ahtme no longer treats wastewater. However, during its operation, it would have been subject to Estonian regulations aligned with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas such as the Baltic Sea. The plant's coastal location and advanced treatment level suggest it was designed to meet stringent nutrient removal standards to protect the marine environment. Given its coastal proximity, treated effluent likely discharged into the Gulf of Finland, part of the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to eutrophication from nutrient pollution. Effective wastewater treatment in this region is critical for reducing algal blooms and preserving marine biodiversity.
Environmental context
The Ahtme plant is located near the coast of the Gulf of Finland, a basin of the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. Discharges from coastal plants in this region can contribute to eutrophication, leading to algal blooms and oxygen depletion. Advanced treatment helps mitigate these impacts by removing nitrogen and phosphorus.
Frequently asked questions
The Ahtme plant is located in the Ahtme district of Kohtla-Järve, in Ida-Viru County, Estonia. Its address is Altserva, Ahtme, Kose küla, Kohtla-Järve linn, Jõhvi vald, Ida-Viru maakond.
The Ahtme plant was designed with a capacity of 19,000 cubic meters per day, indicating it served a medium to large agglomeration.
The Ahtme plant employed advanced treatment, which includes nutrient removal (nitrogen and phosphorus) beyond secondary treatment. This is typical for plants discharging into sensitive areas like the Baltic Sea.
As an Estonian plant, Ahtme operated under the EU Urban Waste Water Treatment Directive (91/271/EEC). The directive requires advanced treatment for discharges into sensitive areas, such as the Baltic Sea, to reduce eutrophication.
The plant is within 10 km of the Baltic Sea coast. The Baltic Sea is highly sensitive to nutrient pollution, so advanced treatment at coastal plants is crucial for protecting marine ecosystems from eutrophication.
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