Case study 10-Bahco treatment wetland for effluent final polishing (Argentina)

MAINE, M. A.; HADAD, H.R.; SANCHEZ, G. C; MUFARREGE, M.M; DI LUCA, G. A

Wetland Technology. Practical information on designing treatment wetlands. IWA Scientific and Technical Report No.27

The International Water Association (IWA)

Año: 2019; p. 122 - 123

Bahco metallurgical industry for toolmaking needed an effluent final stage treatment. A large land area was available in the factory facilities and costs for maintance and operation of watewater treatment are limiting factors in Argentina. In addition, sewage from the factory also required a final treatment.A FWS wetland was constructed. This type of TW was selected due to the efficiency in metal removal and the low costs for operation and maintenance. Although FWSs requires a large area, this is not a problem in this case. Industrial wastewater containing metals and sewage from the factory are treated together, both after a primary treatment (25 m3 d-1 of sewage +75 m3 d-1 of industrial wastewater). Sewage improves the ability of macrophytes to take up heavy metals from wastewater.