Combining Fluidized And Fixed-Film Processes in A Single Biofilm Reactor for Organic Matter Removal

2007 ◽  
Vol 24 (3) ◽  
pp. 267-276
Author(s):  
Deniz Dolgen ◽  
M. Necdet Alpaslan ◽  
Caner Izmirligil
Keyword(s):  
Organic Matter ◽  
Biofilm Reactor ◽  
Organic Matter Removal ◽  
Fixed Film

scholarly journals Organic Matter Removal in a Simultaneous Nitrification-Denitrification Process Using Fixed-Film System.

2021 ◽  
Author(s):  
Perla Gonzalez ◽  
Ana Aguilar Ruiz ◽  
Andrea Reynosa Varela ◽  
Ulises Durán Hinojosa ◽  
Marco Garzón Zuñiga ◽  
...  
Keyword(s):  
Organic Matter ◽  
Nitrogen Compound ◽  
Upflow Anaerobic Sludge Blanket ◽  
Swine Wastewater ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Organic Matter Removal ◽  
Fixed Film ◽  
Suspended Biomass ◽  
Anaerobic Sludge Blanket

Abstract This study focused on evaluating different support media for COD and nitrogen compound removal from an Upflow Anaerobic Sludge Blanket (UASB) reactor fed with swine wastewater. Maximum specific nitrification (MSNA) and denitrification (MSDA) activity tests were performed in two fixed-film systems with (1) polyurethane foam (R1) and (2) polyethylene rings (R2). The results showed that the R2 system performed more efficiently than R1, reaching organic matter removal of 77 ± 8% and nitrogen of 98 ± 4%, attributed to higher specific denitrifying activity recorded (5.3 ± 0.34 g NO3--N/g VTS ∙h). In this sense, MSDA tests indicated that the suspended biomass was responsible for at least 70% of nitrogen removal in the form of ammonium compared with 20% attributed to biomass in the form of biofilm. On the other hand, 40 ± 5% of initial nitrogen could not be quantified in the system effluents, but 10 ± 1% was attributed to loss by volatilization. According to the analyses, the previous information infers the development of simultaneous nitrification-denitrification (SND) routes. Respect to the analyses of microbial diversity and abundance in the biofilm of R2 rings, the presence of the genus Pseudomonas dominated the prokaryotic community of the system in 54.4%.

Organic Matter Removal in a Membrane-Aerated Biofilm Reactor

2018 ◽  
Vol 144 (8) ◽  
pp. 04018057 ◽  
Author(s):  
Tatiana Santos da Silva ◽  
Tsunao Matsumoto ◽  
Mariane Luz dos Anjos ◽  
Liliane Lazzari Albertin
Keyword(s):  
Organic Matter ◽  
Biofilm Reactor ◽  
Organic Matter Removal

scholarly journals Simultaneous organic matter removal and nitrification of an inert self-supporting immersed media to upgrade aerated lagoons

2017 ◽  
Vol 77 (1) ◽  
pp. 51-59 ◽  
Author(s):  
E. Boutet ◽  
S. Baillargeon ◽  
B. Patry ◽  
P. Lessard
Keyword(s):  
Organic Matter ◽  
Freezing Point ◽  
Nitrification Rate ◽  
Test Results ◽  
Organic Matter Removal ◽  
Biofilm Thickness ◽  
Effluent Quality ◽  
Loading Rates ◽  
Organic Removal ◽  
Fixed Film

Abstract A pilot study was performed to evaluate the potential of an inert self-supported immersed fixed film media to upgrade aerated lagoons. Simultaneous organic matter removal and nitrification was assessed under different loading rates and temperatures (near 0 °C) using 12 laboratory-scale reactors operated in parallel. Test results showed that both the temperature and the load have an influence on organic matter effluent concentrations. Effluent quality seemed related to the observed biofilm thickness. Thicker biofilm is believed to have contributed to biomass detachment and increased particulate organic matter concentrations in the effluent. Simultaneous organic removal and nitrification was obtained at loads above 5 g CBOD5/m2·d. The highest nitrification rate at 0.4 °C was obtained for the smallest load, which showed a nitrification limitation close to freezing point.

scholarly journals Heterotrophic Kinetic Study and Nitrogen Removal of a Membrane Bioreactor System Treating Real Urban Wastewater under a Pharmaceutical Compounds Shock: Effect of the Operative Variables

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1785
Author(s):  
Antonio Monteoliva-García ◽  
Juan Carlos Leyva-Díaz ◽  
Cristina López-López ◽  
José Manuel Poyatos ◽  
María del Mar Muñío ◽  
...  
Keyword(s):  
Organic Matter ◽  
Membrane Bioreactor ◽  
Biological Systems ◽  
Oxygen Demand ◽  
Pharmaceutical Compounds ◽  
Biofilm Reactor ◽  
Urban Wastewater ◽  
Organic Matter Removal ◽  
Bioreactor System ◽  
Hostile Environments

Numerous studies have analyzed the viability of the biodegradation and removal of different compounds of emerging concern in biological systems for wastewater treatment. However, the effect on the heterotrophic biomass of organic matter removal is sometimes missed. The aim of the present research was to study the effect of the addition of a mix of three pharmaceuticals (carbamazepine, ciprofloxacin, and ibuprofen) on the behavior of the biomass in two different membrane-based biological systems treating urban wastewater. The present research studied a membrane bioreactor (MBR) pilot plant operating at a similar mixed liquor suspended solids (MLSS) concentration (about 5.5 g/L). This system works as an MBR and is combined with a moving bed biofilm reactor (MBBR-MBR) to treat real urban wastewater at 6 and 10 h of hydraulic retention time (HRT) under three different shocks of pharmaceuticals with increasing concentrations. In all cases, the organic matter removal was, in average terms, higher than about 92% of biochemical oxygen demand on the fifth day (BOD5), 79% of chemical oxygen demand (COD), and 85% of total organic carbon (TOC). Nevertheless, the removal is higher in the MBBR-MBR technology under the same HRT and the MLSS is similar. Moreover, the removal increased during the shock of pharmaceutical compounds, especially in the MBR technology. From a kinetic perspective, MBBR-MBR is more suitable for low HRT (6 h) and MBR is more effective for high HRT (10 h). This could be due to the fact that biofilm systems are less sensitive to hostile environments than the MBR systems. The removal of N-NH4+ decreased considerably when the pharmaceutical compounds mix was introduced into the system until no removal was detected in cycle 1, even when biofilm was present.

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