Preliminary Investigation of an Installed Pilot-Scale Biological Nutrient Removal Technology (BNRT) for Sewage Treatment

Water utilities, commercial and industrial establishments are required to upgrade or install new treatment systems comply with the revised effluent standards issued by Department of Environment Natural Resources – Management Bureau (DENR EMB) which now includes removal monitoring nutrients (nitrogen phosphorus components). One solution is utilize a biological nutrient technology (BNRT) system capable removing from sewage. The on-going study aims investigate performance pilot-scale in designed anaerobic-anoxic-oxic (A 2 O) process total hydraulic retention time 8.37 hrs. was operated an existing sewage plant (STP). System modification adapted ensure continuous operation. Dissolved oxygen (DO) temperature each compartment were evaluated after 45 days modification. DO anaerobic oxic remained within range, while internal recycling flowrate and/or aeration must be adjusted achieve concentration 0.20 0.50 mg/L anoxic compartment. research financially supported Philippine Council for Industry, Energy Emerging Technology Research Development Science (PCIEERD Project No. 04176).