29,000
Population equivalent
CLEAN WATER AND SANITATION
Ensure access to water and sanitation for all
Over 2,000 million people in the world live without access to a basic drinking water service, and 3,6 billionhave no access to a basic sanitation service, resulting in avoidable deaths, chronic disease, fewer hours of education and low productivity.
ACCIONA has positioned itself as a key player in the water treatment sector. Its innovative management seeks to resolve the challenges with respect to the shortage of water resources.
CLIMATE ACTION
Take urgent action to combat climate change and its impacts
The generation and use of energy accounts for 35 % of total greenhouse gas emissions in the world. This activity is the largest contributor to global warming. Investment in renewable energy, energy efficiency and other low-carbon technologies will continue to be essential to meet the emerging needs of humanity and to minimize their negative impact on the environment.
ACCIONA considers the fight against climate change and its effects to be a strategic priority. The company works to mitigate greenhouse gas emissions in order to contribute to the progress of society and respond to the main challenges of sustainable development in the areas of infrastructure, water and energy, leading the transition to a low-carbon economy.
General Information
- Entity: GIASA
- Location: Seville, Spain
- Population: 29,000 eq/inhab
- Flow: 6,525 m3/day
Key points
Technical data
- Average DBO5 : 377 mg/l
- Head in DBO5 : 2460 kg/d
- Average S.S.T. : 300 mg/l
- Head in S.S. : 1958 kg/d
Treatment
Influent construction
- Coarse solids well
- Raw water pumping
Pre-treatment
- Coarse solids breakdown
- Fine solids sieving
- Sand/silt trapping-Grease trapping
Biological treatment
- Secondary settling
- Sludge recirculation
- Excess sludge extraction
Sludge treatment
- Sludge thickening
- Centrifuge sludge dehydration
- Dehydrated sludge storage
Tertiary treatment and foam control
- Sodium hypochlorite disinfection