Removal of Nitrogen and Phosphorous from Wastewater of Seafood Market by Intermittent Cycle Extended Aeration System (ICEAS)

Background: this study aimed to determine the efficiency ofthe intermittent cycle extended aeration system (iceas) and theremoval conditions of treating contaminants, especially nitrogenphosphorus from sea shopping center wastewater.methods: experiment was carried out on fish distribution centerof bandar abbas and 30 samples were collected in a 6 monthperiod from the inlet of the market septic tank. the used pilotstudy carried out consisted of two zones: pre-react and main reactzones. they were divided using a baffle wall. firstly, wastewaterenters a pre-react zone and then through the opening at the bottomof the baffle wall it enters the main react zone. the experimentwas carried out with three simultaneous cycles per day.results: the results showed that the mean of bod5, cod,phosphorus, and nitrate and nitrite removal was 91.5, 86.7, 59.5,49, and 80.8 percent, respectively.conclusion: it was shown that the system is able to removenitrogen and phosphorus almost similar to other proprietaryphosphorus removal processes and with lower cost; however, itis not a proprietary process.