scholarly journals Enhanced carbon and nitrogen removal in an integrated anaerobic/anoxic/aerobic-membrane aerated biofilm reactor system

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28838-28847
Author(s):  
Zhiye Sun ◽  
Mei Li ◽  
Guofeng Wang ◽  
Xiaojun Yan ◽  
Yi Li ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Reactor System ◽  
Carbon And Nitrogen ◽  
System P

A pilot-scale anaerobic/anoxic/aerobic-membrane aerated biofilm reactor (A2/O-MABR) system was constructed to enhance carbon and nitrogen removal.

Characteristics of an air-fluidized-bed biofilm reactor system with a multi-media filter

1994 ◽  
Vol 30 (11) ◽  
pp. 101-110
Author(s):  
Toshiaki Tsubone ◽  
Seiichi Kanamori ◽  
Tatsuo Takechi ◽  
Masahiro Takahashi
Keyword(s):  
Particle Size ◽  
Fluidized Bed ◽  
Suspended Solids ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Reactor System ◽  
Multi Media ◽  
Bod Removal

A pilot scale study was conducted using an Air-Fluidized-Bed Biofilm Reactor (AFBBR) system with a Multi Media Filter (MMF). Soluble BOD (S-BOD) concentration in the effluent of the AFBBR had a correlation with total BOD (T-BOD) and Suspended Solids (SS) concentration in the effluent of the MMF. The lower the S-BOD in the effluent of the AFBBR was, the lower was not only T-BOD but also SS in the effluent of the MMF. It was found that as treatment proceeded, S-BOD was removed and the particle size of SS increased in the AFBBR. These results suggested that the mechanism of BOD removal in this system was: S-BOD was removed and a part of the S-BOD was changed to SS and the particle size of the SS increased in the AFBBR, and then the SS was removed by the MMF. Thus not only the T-BOD but also the SS in the effluent of MMF was lower when the S-BOD in the effluent of the AFBBR was lower. When the S-BOD in the effluent of the AFBBR was 8mg/L, T-BOD and the SS in the effluent of the MMF were 10mg/L and 4mg/L, respectively. In order to have an average S-BOD value in the effluent of the AFBBR of about 8mg/L, the T-BOD loading and the S-BOD loading needed to be less than 1.3kg/m3/day and 0.45 kg/m3/day, respectively. Even when the BOD loading was high, nitrification still occurred in this system.

Sequencing batch reactor treatment of tannery wastewater for carbon and nitrogen removal

2002 ◽  
Vol 46 (9) ◽  
pp. 219-227 ◽  
Author(s):  
S. Murat ◽  
E. Atesş Genceli ◽  
R. Tasşli ◽  
N. Artan ◽  
D. Orhon
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Tannery Wastewater ◽  
Tannery Effluent ◽  
Industrial District ◽  
Carbon And Nitrogen ◽  
Start Up ◽  
Evaluation Of System Performance

The paper evaluates the organic carbon and nitrogen removal performance of the sequencing batch reactor (SBR), technology for tannery wastewater. For this purpose, a pilot-scale SBR was installed on site to treat the plain-settled tannery effluent. The study involved wastewater characterization, start-up and operation of the reactor for carbon and nitrogen removal and model evaluation of system performance. Its removal efficiency was compared with that of the existing continuous-flow activated sludge system providing full treatment to wastewater from the Istanbul Tannery Organized Industrial District.

Simultaneous carbon and nitrogen removal using a litre-scale upflow microbial fuel cell

2013 ◽  
Vol 69 (2) ◽  
pp. 293-297 ◽  
Author(s):  
Ling-ling Zhao ◽  
Tian-shun Song
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Microbial Fuel Cells ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Chicken Manure ◽  
Synthetic Wastewater ◽  
Nitrification Rate ◽  
Carbon And Nitrogen

A 10 L upflow microbial fuel cell (UMFC) was constructed for simultaneous carbon and nitrogen removal. During the 6-month operation, the UMFC constantly removed carbon and nitrogen, and then generated electricity with synthetic wastewater as substrate. At 5.0 mg L−1 dissolved oxygen, 100 Ω external resistance, and pH 6.5, the maximum power density (Pmax) and nitrification rate for the UMFC was 19.5 mW m−2 and 17.9 mg·(L d)−1, respectively. In addition, Pmax in the UMFC with chicken manure wastewater as substrate was 16 mW m−2, and a high chemical oxygen demand (COD) removal efficiency of 94.1% in the UMFC was achieved at 50 mM phosphate-buffered saline. Almost all ammonia in the cathode effluent was effectively degraded after biological denitrification in the UMFC cathode. The results can help to further develop pilot-scale microbial fuel cells for simultaneous carbon and nitrogen removal.

Organic matter and total nitrogen removal from wastewater using a pilot-scale membrane-aerated biofilm reactor

2021 ◽  
pp. 100817
Author(s):  
Withanage Buddhima Sharmane Siriweera ◽  
Lee Yun-Je ◽  
Kobayashi Masumi ◽  
Chettiyappan Visvanathan
Keyword(s):  
Organic Matter ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Total Nitrogen Removal

The BIOZO process – a biofilm system combined with ozonation: occurrence of xenobiotic organic micro-pollutants in and removal of polycyclic aromatic hydrocarbons and nitrogen from landfill leachate

2010 ◽  
Vol 61 (12) ◽  
pp. 3188-3197 ◽  
Author(s):  
Benedek Gy. Plósz ◽  
Christian Vogelsang ◽  
Kenneth Macrae ◽  
Harald H. Heiaas ◽  
Antonio Lopez ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Nitrogen Removal ◽  
Aromatic Hydrocarbons ◽  
Landfill Leachate ◽  
Effective Means ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Priority List ◽  
Polycyclic Aromatic ◽  
Micro Pollutants

We present an assessment of xenobiotic organic micro-pollutants (XOM) occurrence and removal of polycyclic aromatic hydrocarbons (PAHs) in a novel biofilm system combined with ozonation, the BIOZO concept, treating partly stabilised landfill leachate. A novel, staged moving-bed biofilm reactor (SMBBR) design was implemented in laboratory- and pilot-scale, and the PAHs removal efficiency of controlled ozonation was assessed installing the ozonation step in the nitrate recirculation line (Position 1) or between the pre-anoxic and aerobic zones (Position 2). COD removal in a laboratory- and in a pilot-scale SMBBR system with and without ozonation is additionally addressed. Results obtained in a screening study (GC-ToF-MS) were used to compile a priority list of XOMs in leachate based on relative occurrence, showing PAHs as the predominant fraction. Biological treatment is shown to be an effective means to remove PAHs detected in the aqueous phase. PAH removal takes in most part place in the pre-anoxic zone, thereby decreasing toxicity exhibited by PAH on autotrophic nitrifier bacteria in the aerobic zone. Ozonation installed in Position 2 is shown to be superior over Position I in terms of COD, PAH and nitrogen removal efficiencies. We additionally demonstrate the potential of intermittent sludge ozonation as a means to decrease PAH concentrations in sludge wasted and to improve nitrogen removal in the BIOZO system.

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