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ENERGY-EFFICIENT WASTEWATER TREATMENT TECHNOLOGIES IN CONSTRUCTED WETLANDS
Usually in wastewater treatment plants the removal of organic matter is ensured in aerotanks in biochemical reactions where activated sludge in presence of oxygen transforms the organic matter. The quantity of organic matter in water can be determined as the biochemical oxygen demand in five days (BOD). BOD in village municipal sewage is around 250 mg l-1 or 65 g per day from each resident. It means that 1.7 kg of oxygen is needed for mineralizing one kg of organic matter. Therefore, it can befatcat:637itnslzfg6zgj5wl33t4td2a