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