Overview
Crespos wastewater treatment plant in Braga, Portugal serves 3,500 people with secondary treatment. It discharges 583.56 m³/day and operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
Crespos is a secondary-level wastewater treatment plant located in the Braga municipality of northern Portugal. Serving a population of approximately 3,500, the plant is part of the region's municipal wastewater infrastructure, handling domestic sewage from the Crespos and Pousada areas. With a designed capacity of 3,500 m³/day and a current discharge volume of 583.56 m³/day, the plant operates well within its capacity. As a secondary treatment facility, it meets the EU Urban Waste Water Treatment Directive requirements for agglomerations of this size, ensuring biological treatment of organic matter before discharge. The treated effluent is released into local watercourses that drain into the Cávado River basin, eventually reaching the Atlantic Ocean near Esposende. The plant plays a key role in protecting the Cávado River and its downstream ecosystems from untreated sewage pollution.
Environmental context
The Crespos plant discharges into the Cávado River basin, which flows westward through Braga district and enters the Atlantic Ocean at Esposende. The Cávado River supports diverse aquatic life and is an important water resource for irrigation and recreation. The plant's secondary treatment helps reduce organic load and nutrient inputs, safeguarding downstream water quality in the coastal zone.
Frequently asked questions
The Crespos plant is located in the Braga municipality of northern Portugal, at Rua de Areias, Couço, Crespos e Pousada, Braga, 4710-613.
The plant serves approximately 3,500 people in the Crespos and Pousada areas of Braga.
The treated effluent is discharged into local watercourses that drain into the Cávado River basin, eventually reaching the Atlantic Ocean.
The plant provides secondary treatment, which includes biological processes to remove organic matter, meeting EU standards for agglomerations of this size.
As a Portuguese plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations with a population equivalent over 2,000.
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