Role of influent split ratio in a two-line BNR process performing denitrifying phosphorus removal

Strength and Water Purification Properties of Environment-Friendly Construction Material Produced with the (D)PAOs and Zeolite

“…The T-P removal rate was slightly higher in the (D)PAOs-added porous concrete at an early stage of immersion, but the difference significantly increased after 5-day of immersion. The reason for this is that flocs tend to increase in size and number, as shown in Figure 9, which is similarly observed when microorganisms are used to purify wastewater [11][12][13][14]. Also, PAOs such as Acetobacter (obligate aerobes), take in phosphorus in wastewater.…”

“…PAOs (Phosphate Accumulating Organisms) and DPAOs (De-nitrifying Phosphate Accumulating Organisms) (D)PAOs use O 2 as an electron acceptor for phosphorous uptake in oxic conditions to store phosphorous in their cells, while using NO 3− as an electron acceptor in anoxic conditions. In the present study, (D)PAOs were sampled from those used in the biological nutrient removal (BNR) process of a wastewater treatment facility in Daejeon, Korea, as shown in Figure 1 [3,11].…”

Efficiency of SBR Process with a Six Sequence Aerobic-Anaerobic Cycle for Phosphorus and Organic Material Removal from Municipal Wastewater

“…Sequencing batch reactor (SBR) as modified version of activated sludge is one of the most successful methods in nutrient removal [7][8][9][10]. SBR systems have replaced other conventional systems in the biological treatment of industrial and sanitary wastewater due to their numerous advantages.…”

Organic substrate transformation and sludge characteristics in the integrated anaerobic anoxic oxic–biological contact oxidation (A2/O–BCO) system treating wastewater with low carbon/nitrogen ratio

“…In the anaerobic stage, both DNPAOs and PAOs took up volatile fatty acids (VFAs) to synthesize poly-β-polyhydroxyalkanoates (PHA) and stored it internally [10]. DNPAOs consumed the energy from glycogen glycolysis and polyphosphate hydrolysis, and resulted in the release of DNPAOs have a unique advantage over conventional EBPR of PAOs: the capability of utilizing the limited carbon sources for simultaneous nitrogen and phosphorus removal, especially treating municipal wastewater with low carbon/nitrogen (COD/N) ratio [11,12]. However, glycogen accumulating organisms (GAOs) [13,14] and denitrifying GAOs (DNGAOs) [15] competed with DNPAOs for carbon sources without phosphorus release and uptake, and deteriorated phosphorous removal efficiency [16,17].…”