Cabo Prioriño WWTP

Cabo Prioriño Submarine Outfall. Improved Treatment and Discharge. This station serves the municipalities of Ferrol, Narón and Neda. It is a modern and compact plant in which the occupation has been minimised to reduce the visual impact generated by the clearing necessary for its construction.

General Information

Entity: MIMAM. North Hydrographic Confederation
Location: Ferrol, A Coruña, Spain
Flow: 31,000 m3/day

Key points

Water Line

Influent construction and pre-sand/silt trapping
Forebay
Influent flow metering and regulation
Raw water lifting to treatment line, with 5 submergible screw pumps
Pre-treatment with 3 mm sieving in 4 channels and sand/silt trapping-grease trapping in 5 channels
Pre-treated water flow metering
Lamellar settling without reagents (SEDIPAC), in three units
Biological filtration (BIOFOR), in six units
Biofor dirty washing water regulation (with the excess sludge from this biological treatment)
Delivery of treated water to action commencement (Disinfection and undersea effluent pipe)

Sludge Line

Joint primary sludge and excess sludge extraction from the DEDIPAC, and six screw pump pumping
Excess sludge thickening through thickening screens, in three units with chemical conditioning
Pumping to digestion, by three twist screw units

Gas line

Gas production in digesters
Gas storage in low pressure gasometer
Using gas in sludge heating
Surplus gas burning in flare

Ancillary services

Deodorising
Building ventilation
Service water
Service air

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General Information

Key points

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