Water and sediment chemistry of a wetland treating municipal wastewater

摘要: Abstract The effects of wastewater discharge in an artificially confined wetland, Turangi land treatment facility, New Zealand, were investigated by measuring the changes water and sediment chemistry facility. Analysis surface shows that facility is effective at removing BOD5 (85%), but not NH4‐N, SO4, PO4‐P, total suspended solids. Surface flow measurements indicate effluent flows through wetland less than a day. retention time too short to allow exchange between vegetation effluent, thus preventing efficient contaminant removal. change use c. 30 years ago associated with construction reflected stratigraphy chemistry. Elevated sulphur zinc concentrations sediments are attributed sewage discharge, soil uptake taking place.