La qualité et l’assainissement des eaux du Port

The video is an institutional corporate report focusing on environmental measures and technical sanitation solutions aimed at improving water quality across the Port of Barcelona. It opens with an introductory screen displaying "Port de Barcelona, una apuesta decidida por la sostenibilidad - La mejora de la calidad del agua". Throughout the clip, footage presents aerial views of the commercial harbor, berthed cruise liners, the port entrance, scientists collecting water and sediment samples from boats, laboratory chemical testing, underwater marine life and benthic organisms, swimmers competing in the traditional Copa Nadal and open-water international swimming championships, sanitation pumping stations, wastewater treatment plants, skimmer vessels removing floating debris, and the deployment of oil-containment booms. Key technical indicators appear superimposed on screen:

• Port dimensions: Port waters cover 890 hectares with a total volume of 90 million cubic meters.
• Water and sediment sample testing: Nutrients, microbiological contamination, heavy metals, hydrocarbons, and organic compounds.
• Reduction of chemical indicators in inner waters (2000 vs. 2018 comparison):
  • Nitrate (µmol/L): Outer waters 0.8 (2000) and 0.9 (2018); Inner waters 4.1 (2000) and 1.6 (2018).
  • Ammonium (µmol/L): Outer waters 2.5 (2000) and 0.8 (2018); Inner waters 7.8 (2000) and 2.0 (2018).
  • Chlorophyll A (mg/m³): Outer waters 1.0 (2000) and 1.1 (2018); Inner waters 2.9 (2000) and 1.5 (2018).
• Presence of benthic organisms (Shannon diversity index): Outer waters 2.4 (2000) and 3.3 (2017); Inner waters 1.2 (2000) and 2.6 (2017).
• Port and city sanitation networks: Over 35 kilometers of sewer collectors and 16 pumping stations managed from Barcelona's City Council control center to eliminate discharges into port basins, diverting wastewater to the Llobregat (Baix Llobregat WWTP) and Besòs treatment plants.
• Floating debris collection: 365-day operational service recovering over 400 cubic meters of floating waste annually.
  • Floating waste composition: Plastics (37%), Wood (23%), Others (21%), and Organics (19%).
• North entrance opening: Enhanced water turnover in Port Vell, reducing renewal time from 20 days down to 7 days.
• MARPOL services: Efficient vessel waste collection for liquid (MARPOL I) and solid (MARPOL V) waste to prevent marine pollution.
• Spill prevention and containment: Deployment of technical teams and floating booms under the port's Internal Maritime Contingency Plan. The video ends with the slogan "Port de Barcelona - Por un futuro sostenible" and the official #GreenPort screen with social media links.