Overview
Marma avloppsreningsverk is an advanced wastewater treatment plant in Marmaverken, Sweden, serving approximately 1,560 people. It discharges 245.36 m³/day of treated effluent.
Marma avloppsreningsverk is a municipal wastewater treatment plant located in Marmaverken, within Söderhamn Municipality, Gävleborg County, Sweden. The plant serves a population of about 1,560 residents, reflecting a small community scale typical of rural Swedish settlements. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC). With a designed capacity of 2,500 m³/day and an actual discharge volume of 245.36 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Baltic Sea via the Ljusnan River system. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports Sweden's commitment to reducing nutrient loads in the Baltic Sea, a sensitive marine environment.
Environmental context
The plant discharges into the Ljusnan River basin, which flows eastward into the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it highly sensitive to nutrient pollution. Advanced treatment at this plant helps reduce nitrogen and phosphorus loads, mitigating eutrophication risks in coastal waters and supporting the health of fish populations and migratory birds along the Swedish coast.
Frequently asked questions
Marma avloppsreningsverk is located in Marmaverken, within Söderhamn Municipality, Gävleborg County, Sweden.
The plant serves approximately 1,560 people, corresponding to a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant discharges treated effluent into the local watershed, which flows into the Ljusnan River and ultimately reaches the Baltic Sea.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment, in line with Swedish standards for sensitive areas.
Sweden implements the EU Urban Waste Water Treatment Directive, which requires secondary treatment for agglomerations over 2,000 PE and advanced treatment in sensitive areas. This plant's advanced treatment exceeds those requirements, supporting Baltic Sea protection.
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