Start-up and bacterial community compositions of partial nitrification in moving bed biofilm reactor

2016 ◽  
Vol 101 (6) ◽  
pp. 2563-2574 ◽  
Author(s):  
Tao Liu ◽  
Yan-jun Mao ◽  
Yan-ping Shi ◽  
Xie Quan
Chemosphere ◽  
2018 ◽  
Vol 200 ◽  
pp. 481-486 ◽  
Author(s):  
Maciej S. Kowalski ◽  
Tanner R. Devlin ◽  
Jan A. Oleszkiewicz

2014 ◽  
Vol 38 (2) ◽  
pp. 273-285 ◽  
Author(s):  
Xin Chen ◽  
Lingjun Kong ◽  
Xingyu Wang ◽  
Shuanghong Tian ◽  
Ya Xiong

2019 ◽  
Vol 145 (4) ◽  
pp. 04019009
Author(s):  
Yubin Ji ◽  
Chong Tan ◽  
Di Cui ◽  
Yingjie Liu ◽  
Lei Jiang

2013 ◽  
Vol 34 (23) ◽  
pp. 3095-3101 ◽  
Author(s):  
Ivar Zekker ◽  
Ergo Rikmann ◽  
Toomas Tenno ◽  
Kristel Kroon ◽  
Priit Vabamäe ◽  
...  

Water ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 2484
Author(s):  
César Huiliñir ◽  
Vivian Fuentes ◽  
Carolina Estuardo ◽  
Christian Antileo ◽  
Ernesto Pino-Cortés

This work aimed to achieve partial nitrification (PN) in a Sequencing Moving Bed Biofilm Reactor SMBBR with zeolite as a biomass carrier by using sulfide pulses in the presence of organic matter as an inhibitor. Two conditions were evaluated: sulfide (HS−) = 5 mg S/L and vvm (air volume per liquid volume per minute, L of air L−1 of liquid min−1) = 0.1 (condition 1); and a HS− = 10 mg S/L and a vvm = 0.5 (condition 2). The simultaneous effect of organic matter and sulfide was evaluated at a Chemical Oxygen Demand (COD) = 350 mg/L and HS− = 5 mg S/L, with a vvm = 0.5. As a result, using the sulfide pulse improved the nitrite accumulation in both systems. However, Total Ammonia Nitrogen (TAN) oxidation in both processes decreased by up to 60%. The simultaneous presence of COD and sulfide significantly reduced the TAN and nitrite oxidation, with a COD removal yield of 80% and sulfide oxidation close to 20%. Thus, the use of a sulfide pulse enabled PN in a SMBBR with zeolite. Organic matter, together with the sulfide pulse, almost completely inhibited the nitrification process despite using zeolite.


2017 ◽  
Vol 77 (3) ◽  
pp. 714-720 ◽  
Author(s):  
J. C. Leyva-Díaz ◽  
A. Rodríguez-Sánchez ◽  
J. González-López ◽  
J. M. Poyatos

Abstract A membrane bioreactor (MBR) and a hybrid moving bed biofilm reactor-membrane bioreactor (hybrid MBBR-MBR) for municipal wastewater treatment were studied to determine the effect of salinity on nitrogen removal and autotrophic kinetics. The biological systems were analyzed during the start-up phase with a hydraulic retention time (HRT) of 6 h, total biomass concentration of 2,500 mg L−1 in the steady state, and electric conductivities of 1.05 mS cm−1 for MBR and hybrid MBBR-MBR working under regular salinity and conductivity variations of 1.2–6.5 mS cm−1 for MBR and hybrid MBBR-MBR operating at variable salinity. The variable salinity affected the autotrophic biomass, which caused a reduction of the nitrogen degradation rate, an increase of time to remove ammonium from municipal wastewater and longer duration of the start-up phase for the MBR and hybrid MBBR-MBR.


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