Evaluation of simultaneous organic matter and nitrogen removal in a novel anaerobic/anoxic/oxic membrane bioreactor system for treatment of synthetic paper-recycling wastewater

2020 ◽  
Vol 189 ◽  
pp. 66-73
Author(s):  
Ali Izadi ◽  
Morteza Hosseini ◽  
Ghasem Najafpour Darzi ◽  
Gholamreza Nabi Bidhendi ◽  
Farshid Pajoum Shariati
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Paper Recycling ◽  
Bioreactor System

Application of membrane bioreactor system with full scale plant on livestock wastewater

2005 ◽  
Vol 51 (6-7) ◽  
pp. 465-471 ◽  
Author(s):  
H. Kim ◽  
H.-S. Kim ◽  
I.-T. Yeom ◽  
Y.-B. Chae
Keyword(s):  
Organic Matter ◽  
Membrane Bioreactor ◽  
Full Scale ◽  
Nitrogen And Phosphorus ◽  
Livestock Wastewater ◽  
Bioreactor System ◽  
High Level

A full-scale plant of an MBR system treating livestock wastewater has shown impressive results. The Cheorwon County Environmental Authorities adopted the MBR process with UF membrane for retrofitting the old plant, which removes organic matter, nitrogen and phosphorus at a high level. According to 6 months operation data, BOD and SS removal were about 99.9% and CODMn, TN and TP removal were 92.0%, 98.3% and 82.7%, respectively. It is considered that the temperature at the bioreactor has to be controlled to be below 40 °C so as to ensure sufficient nitrification. It appeared that the MBR system is competitive with other conventional technologies for treatment of livestock wastewater such as piggery waste.

scholarly journals Organic Matter and Nitrogen Removal in Rotary Disk Type UF Membrane Bioreactor for Fermentation Wastewater Treatment.

1999 ◽  
pp. 123-133
Author(s):  
Shuguang LU ◽  
Tsuyoshi IMAI ◽  
Masao UKITA ◽  
Masahiko SEKINE ◽  
Masayuki FUKAGAWA ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Rotary Disk

scholarly journals Performance and microbial community of the CANON process in a sequencing batch membrane bioreactor with elevated COD/N ratios

2020 ◽  
Vol 81 (1) ◽  
pp. 138-147
Author(s):  
Xiaoling Zhang ◽  
Xincong Liu ◽  
Meng Zhang
Keyword(s):  
Organic Matter ◽  
Microbial Community ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Ammonia Oxidation ◽  
Heterotrophic Bacteria ◽  
Removal Rate ◽  
Ammonia Oxidizing Bacteria ◽  
Anaerobic Ammonia Oxidation ◽  
Canon Process

Abstract In this study, the effects of elevated chemical oxygen demand/nitrogen (COD/N) ratios on nitrogen removal, production and composition of the extracellular polymer substances (EPS) and microbial community of a completely autotrophic nitrogen removal via nitrite (CANON) process were studied in a sequencing batch membrane bioreactor (SBMBR). The whole experiment was divided into two stages: the CANON stage (without organic matter in influent) and the simultaneous partial nitrification, anaerobic ammonia oxidation and denitrification (SNAD) stage (with organic matter in influent). When the inflow ammonia nitrogen was 420 mg/L and the COD/N ratio was no higher than 0.8, the addition of COD was helpful to the CANON process; the total nitrogen removal efficiency (TNE) was improved from approximately 65% to more than 75%, and the nitrogen removal rate (NRR) was improved from approximately 0.255 kgN/(m3·d) to approximately 0.278 kgN/(m3•d), while the TNE decreased to 60%, and the NRR decreased to 0.236 kgN/(m3•d) when the COD/N ratio was elevated to 1.0. For the EPS, the amounts of soluble EPS (SEPS) and loosely bound EPS (LB-EPS) were both higher in the CANON stage than in the SNAD stage, while the amount of tightly bound EPS (TB-EPS) in the SNAD stage was significantly higher due to the proliferation of heterotrophic bacteria. The metagenome sequencing technique was used to analyse the microbial community in the SBMBR. The results showed that the addition of COD altered the structure of the bacterial community in the SBMBR. The amounts of Candidatus ‘Anammoxoglobus’ of anaerobic ammonia oxidation bacteria (AAOB) and Nitrosomonas of ammonia oxidizing bacteria (AOB) both decreased significantly, and Nitrospira of nitrite oxidizing bacteria (NOB) was always in the reactor, although the amount changed slightly. A proliferation of denitrifiers related to the genera of Thauera, Dokdonella and Azospira was found in the SBMBR.

scholarly journals Nitrogen Removal of Membrane Bioreactor System Having Two Intermittent Aeration Tanks.

2001 ◽  
Vol 24 (6) ◽  
pp. 398-403 ◽  
Author(s):  
Katsushi URYU ◽  
Takamasa TSUJI ◽  
Yoshinori TAKEZAKI ◽  
Yasutoshi SHIMIZU
Keyword(s):  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Intermittent Aeration ◽  
Bioreactor System

Study on Nitrogen Removal Efficiency of Hybrid Anoxic/Aerobic Membrane Bioreactor

2012 ◽  
Vol 178-181 ◽  
pp. 516-519
Author(s):  
Bai Ge Su ◽  
Zhi Qiang Liu ◽  
Xiao Jing Li ◽  
Xue Xu ◽  
Lei Gao
Keyword(s):  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Hybrid Membrane ◽  
Filling Ratio ◽  
Experimental Results ◽  
Aeration Intensity ◽  
System A ◽  
Bioreactor System ◽  
Main Influence

Based on fillers theory and traditional A/O-MBR theory, anoxic/aerobic hybrid membrane bioreactor system (A/O-HMBR for short) was modified by adding suspended biological fillers in one of the aerobic tanks of the traditional A/O-MBR, in which the filling ratio of fillers was 8%. The thesis mainly studies the nitrogen removal effect in the A/O-HMBR system when the main influence parameters, such as influent C/N(5,7,10), aeration intensity(15m3/h,20m3/h,25m3/h) and HRT(5h,8h,11h), were changed.The experimental results show that when HRT was 8h, C/N was 7, and aeration intensity was 20m3/h, TN removal effect was best.

Carbon and nitrogen removal from tannery wastewater with a membrane bioreactor

2003 ◽  
Vol 48 (1) ◽  
pp. 207-214 ◽  
Author(s):  
A. Goltara ◽  
J. Martinez ◽  
R. Mendez
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Sequencing Batch Reactor ◽  
Biomass Yield ◽  
Batch Reactor ◽  
Biomass Concentration ◽  
Carbon And Nitrogen ◽  
Yield Values ◽  
Removal Efficiencies

A 3.5 L Membrane Sequencing Batch Reactor (MSBR) was used for the treatment of a wastewater coming from the beamhouse section of a tannery. The wastewater, produced after the oxidation of sulphide compounds, contained average COD and ammonium concentrations of 550 and 90 mg/L respectively. The system was operated for a period of 150 days, with no sludge removal during the whole period of operation. The biomass concentration inside the reactor varied considerably, with maximum values close to 10 g/L at the end of operation. Low biomass yield values were achieved probably due to the low feed/microorganisms (F/M) ratio. An important accumulation of organic matter in the reactor was noticed, although the COD effluent was not affected due to the permeation through the membrane. The nature of this organic matter is finally discussed. Removal efficiencies close to 100% in ammonium and 90% in COD were achieved and the TN removal efficiency ranged from 60 to 90%.

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.

scholarly journals Nitrogen Removal by Sulfur-Based Carriers in a Membrane Bioreactor (MBR)

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 115 ◽  
Author(s):  
Thi-Kim-Quyen Vo ◽  
Jeong-Jun Lee ◽  
Joon-Seok Kang ◽  
Seogyeong Park ◽  
Han-Seung Kim
Keyword(s):  
Removal Efficiency ◽  
Total Phosphorus ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Oxygen Demand ◽  
Autotrophic Denitrification ◽  
Nitrogen Gas ◽  
Sulfate Ions ◽  
Major Disadvantage ◽  
Bioreactor System

Sulfur-based carriers were examined to enhance the nitrogen removal efficiency in a mixed anoxic–anaerobic-membrane bioreactor system, in which sulfur from the carrier acts as an electron donor for the conversion of nitrate to nitrogen gas through the autotrophic denitrification process. A total nitrogen removal efficiency of 63% was observed in the system with carriers, which showed an increase in the removal efficiency of around 20%, compared to the system without carriers. The results also indicated that the carriers had no adverse effect on biological treatment for the organic matter and total phosphorus. The removal efficiencies for chemical oxygen demand (COD) and total phosphorus (TP) were 98% and 37% in both systems, respectively. The generation of sulfate ions was a major disadvantage of using sulfur-based carriers, and resulted in pH drop. The ratio of sulfate in the effluent to nitrate removed in the system ranged from 0.86 to 1.97 mgSO42−/mgNO3−-N, which was lower than the theoretical value and could be regarded as due to the occurrence of simultaneous heterotrophic and autotrophic denitrification.

Nitrogen Removal in a Real-Time Controlled Sequencing Batch Membrane Bioreactor

2010 ◽  
Vol 5 (3) ◽  
Author(s):  
Cheng-Nan Chang ◽  
Li-Ling Lee ◽  
Han-Hsien Huang ◽  
Ying-Chih Chiu
Keyword(s):  
Real Time ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Synthetic Wastewater ◽  
Real Time Control ◽  
Time Control ◽  
Cake Layer ◽  
On Line ◽  
Solid Liquid ◽  
Solid Liquid Separation

The performance of a real-time controlled Sequencing Batch Membrane Bioreactor (SBMBR) for removing organic matter and nitrogen from synthetic wastewater has been investigated in this study under two specific ammonia loadings of 0.0086 and 0.0045g NH4+-N gVSS−1 day−1. Laboratory results indicate that both COD and DOC removal are greater than 97.5% (w/w) but the major benefit of using membrane for solid-liquid separation is that the effluent can be decanted through the membrane while aeration is continued during the draw stage. With a continued aeration, the sludge cake layer is prevented from forming thus alleviating the membrane clogging problem in addition to significant nitrification activities observed in the draw stage. With adequate aeration in the oxic stage, the nitrogen removal efficiency exceeding 99% can be achieved with the SBMBR system. Furthermore, the SBMBR system has also been used to study the occurrence of ammonia valley and nitrate knee that can be used for real-time control of the biological process. Under appropriate ammonia loading rates, applicable ammonia valley and nitrate knee are detected. The real-time control of the SBMBR can be performed based on on-line ORP and pH measurements.

Pre-Precipitation Facilitates Nitrogen Removal without Tank Expansion

1990 ◽  
Vol 22 (7-8) ◽  
pp. 85-92 ◽  
Author(s):  
Ingemar Karlsson ◽  
Gunnar Smith
Keyword(s):  
Waste Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Carbon Source ◽  
Nitrogen Removal ◽  
Waste Water Treatment ◽  
Chemical Precipitation ◽  
Sewage Water ◽  
Laboratory Studies ◽  
Denitrification Process

Chemically coagulated sewage water gives an effluent low in both suspended matter and organics. To use chemical precipitation as the first step in waste water treatment improves nitrification in the following biological stage. The precipitated sludge contains 75% of the organic matter in the sewage and can by hydrolysis be converted to readily degradable organic matter, which presents a valuable carbon source for the denitrification process. This paper will review experiences from full-scale applications as well as pilot-plant and laboratory studies.

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