Overview
SIA Valgums S is a wastewater treatment plant in Rīga, Latvia, serving approximately 12,000 people. It operates under the EU Urban Waste Water Treatment Directive, which sets treatment standards for agglomerations of this scale.
SIA Valgums S is a wastewater treatment facility located in the Dārziņi neighborhood of Rīga, Latvia, along the Daugava River. The plant serves a population of around 12,000, classifying it as a medium-sized agglomeration under European Union regulations. Its location in the capital city places it within a dense urban and industrial context, where effective wastewater management is critical for public health and environmental protection. As a plant serving between 10,000 and 150,000 people, SIA Valgums S is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's designed capacity is 1.00 (likely in thousand cubic meters per day or similar units), indicating a facility sized for its service population. The treated effluent from SIA Valgums S is discharged into the Daugava River, which flows through Rīga and into the Gulf of Rīga, part of the Baltic Sea. The Daugava is a major watercourse in Latvia, supporting diverse aquatic life and providing drinking water for the region. The plant's operation helps protect the river's water quality and the downstream marine environment from nutrient pollution and other contaminants.
Environmental context
The plant discharges into the Daugava River, which flows through Rīga and empties into the Gulf of Rīga, a brackish basin of the Baltic Sea. The Daugava is ecologically significant, supporting fish species such as salmon and sturgeon, and its delta provides important bird habitats. The Baltic Sea is highly sensitive to nutrient inputs, making effective wastewater treatment crucial for preventing eutrophication and maintaining water quality in this vulnerable marine ecosystem.
Frequently asked questions
SIA Valgums S is located at 65 Daugavmalas iela in the Dārziņi neighborhood of Rīga, Latvia, along the Daugava River.
The plant serves approximately 12,000 people, classifying it as a medium-sized agglomeration under EU regulations.
The treated effluent is discharged into the Daugava River, which flows through Rīga and into the Gulf of Rīga, part of the Baltic Sea.
As a plant serving over 10,000 people, SIA Valgums S is required to meet secondary treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). If the Daugava River is designated as a sensitive area, more advanced treatment may be required.
In Latvia, plants of this scale typically employ secondary biological treatment, such as activated sludge or trickling filters, to meet EU standards. Some facilities may also include nutrient removal to protect the Baltic Sea from eutrophication.
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