General Information
- Project: DWTP (Water Treatment Plant) Sollano.
- Entity: Municipality of Bilbao.
- Location: Zalla, Vizcaya (Basque Country). Spain.
- Design flow: 129,600 m3/day.
- Population: 300,000.
Key points
Treatment:
Headworks or mixing chamber of three push button type decanters, 18 aquazur open type sand filters.
Reagents used in the process:
Coagulant, basic polychlorinated aluminium sulphate, flocculant, anionic polyelectrolyte, disinfectant, chlorine gas, disinfection reinforcement, hypochlorite, additional flocculant, fluoride.
Sludge treatment:
- Catchment dams of filter washing and decanter purge water.
- Thickener.
- Buffer tank.
- Press filter.