Optimizing vertical flow aerated steel slag filter system with nitrifiers bacteria for nutrients' removal from domestic wastewater: a pilot study

摘要

BACKGROUND The present study aimed to optimize the removal efficiency of ammonia nitrogen (NH3-N) and total kjeldhal nitrogen (TKN) from domestic wastewater as a function of hydraulic loading rates (HLRs) (0.16-5.44 m(3) m(-3) day(-1)) and the aeration rate (3, 5 and 10 L min(-1)) in a vertical flow aerated steel slag filter (VFASSF) system with nitrifier bacteria. The nitrifier bacterial cell morphology was determined using scanning electron microscopy (SEM) analysis.