Bioavailable and biodegradable dissolved organic nitrogen in activated sludge and trickling filter wastewater treatment plants

Characteristics and transformations of dissolved organic nitrogen in municipal biological nitrogen removal wastewater treatment plants

“…As a result of efficient BENR processing, the main fraction of the residual nitrogen in effluent discharged to certain sensitive surface waters consists of dissolved organic nitrogen (DON) (Pagilla et al 2006, Liu et al 2012. Previous studies indicated that effluent DON can be bioavailable to natural algae and plankton (Pehlivanoglu-Mantas and Sedlak 2004, Sattayatewa et al 2009, Simsek et al 2013. Thus, DON is drawing more and more attention in wastewater treatment plants (WWTPs) currently due to growing concerns such as stimulating algal growth of receiving waters (Pehlivanoglu-Mantas and Sedlak 2004) and forming nitrogenous disinfection by-product N-nitrosodimethylamine (Pehlivanoglu-Mantas and Sedlak 2006, Lee et al 2007.…”

“…Previous studies on wastewater-derived DON focused on two important research questions: where DON is removed or produced in BNR processes and what is the effect of BNR process on DON (Czerwionka et al 2012, Simsek et al 2013. Sattayatewa et al (2009) reported that about 28-57% of the effluent DON was bioavailable or biodegradable by using different types of test species.…”

“…Sattayatewa et al (2009) reported that about 28-57% of the effluent DON was bioavailable or biodegradable by using different types of test species. Simsek et al (2013) determined biodegradable dissolved organic nitrogen (BDON) and bioavailable dissolved organic nitrogen (ABDON) in activated sludge (AS) and trickling filter (TF) wastewater treatment processes. They reported that 65% BDON and 63% ABDON were removed in the TF facility and 68%, 56%, respectively in the AS facility, between primary clarification to final effluent.…”

Determination of the Fate of Dissolved Organic Nitrogen in the Three Wastewater Treatment Plants, Jordan

“…Because of successful of BENR processing, the most important part of the remaining nitrogen within effluent released to the responsive environments is made of dissolved organic nitrogen (DON) (Pagilla et al 2006, Liu et al 2012. Earlier reports revealed that effluent DON is usually bioavailable to algae and also plankton (Pehlivanoglu-Mantas and Sedlak2004, Sattayatewa et al 2009, Simsek et al 2013. Accordingly, DON is actually drawing a greater number of interesting in waste water treatment plants (WWTPs) recently as a result of increasing worries including the revitalizing algal continuing growth of aquatic environments (Pehlivanoglu-Mantas and Sedlak 2004) and also the forming nitrogenous disinfection by-product N-nitrosodimethylamine (Pehlivanoglu-Mantas and Sedlak 2006.…”

“…Earlier investigations on wastewater-derived DON focused on two questionable problems; where DON is eliminated or even created in BENR processes and what exactly is the influence of BENR process on DON (Czerwionka et al 2012,Simsek et al 2013, Huo, et al, 2013. Sattayatewa et al (2009) reported that around 28-57% of the effluent DON was bioavailable or biodegradable, Simsek and his colleague (2013) determined biodegradable dissolved organic nitrogen (BDON) and bioavailable dissolved organic nitrogen(ABDON) in activated sludge (AS) and trickling filter (TF)wastewater treatment processes.…”