Method and installation for the treatment of soiled water from ships

摘要

Wastewater is pretreated by surface filtration, collected in container (1) and optionally enriched with oxygen. Wastewater is fed from container (1) to bioreactor and aerobic treatment is carried out. Wastewater is passed to sealed container (3), in which denitrification is performed. Water from container (3) is fed into settling container (4). Sludge from container (3) is recirculated and water is subjected to fine filtration. Wastewater is pretreated by surface filtration. The pretreated wastewater is collected in a container (1) used as a mixing tank and optionally enriched with oxygen. The wastewater is continuously fed from the container (1) to a bioreactor and aerobic wastewater treatment is carried out in a container (2). Wastewater from the container (2) is passed to a sealed container (3), in which denitrification is performed, in batches. Water from the container (3) is fed into a container (4) used as a settling container. The sludge from container (3) is recirculated at regular intervals in batches into container (1). After disinfecting, water is subjected to fine filtration from container (4). An independent claim is included for wastewater treating assembly.