Introduction

Y-PNR (Yeongam-Phosphorus & Nitrogen Removal) is supplemented the faults of and improved existing Bardenpho method, and it is a biological advanced treatment technology that supplies the fixed microbe carrier (nitrification media) into the aerobic tank which is a part of the bioreactor comprised of anaerobic tank, anoxic tank, and aerobic tank to increase the volume of effective microbes to maximize nitrification rate and shorten the duration.