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Evaluation of Nutrient Removal Dynamic in Post Treatment Slow Sand Filter Unit
Samir A Afifi, Amany A Elfari, Samir Alnahhal
Using Slow Sand Filter (SSF) is a well-known approach for post wastewater treatment. The paper presents and evaluates using of SSF as post treatment unit after a secondary biological treatment in Rafah Wastewater treatment Plant (RWWTP), Gaza Palestine. Samples were collected and analyzed for the post treatment SSF unit in order to evaluate the nutrient removal.
Results show that 50% of Total Kjeldahl Nitrogen (TKN), 47% of Ammonia (NH4), and 55% ortho-phosphorous were removed from the final effluent of the whole unit. The SSF led to increase the concentration of nitrate due to high concentrations of Dissolved Oxygen (DO), which is an important factor affecting the nitrification process and the oxidation of nitrogen reduce form.