Full-scale anaerobic sequencing batch biofilm reactor for sulfate-rich wastewater treatment

2011 ◽  
Vol 25 (1-3) ◽  
pp. 13-19 ◽  
Author(s):  
Arnaldo Sarti ◽  
Ariovaldo J. Silva ◽  
Marcelo Zaiat ◽  
Eugenio Foresti
Keyword(s):  
Wastewater Treatment ◽  
Full Scale ◽  
Biofilm Reactor ◽  
Sequencing Batch Biofilm Reactor

Upgrading of a small wastewater treatment plant in a cold climate region using a moving bed biofilm reactor (MBBR) system

2000 ◽  
Vol 41 (1) ◽  
pp. 177-185 ◽  
Author(s):  
G. Andreottola ◽  
P. Foladori ◽  
M. Ragazzi
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Internal Surface ◽  
Full Scale ◽  
Biofilm Reactor ◽  
Cold Climate ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
North East

The aim of this study was to evaluate the performance of a full-scale upgrading of an existing RBC wastewater treatment plant with a MBBR (Moving Bed Biofilm Reactor) system, installed in a tank previously used for sludge aerobic digestion. The full-scale plant is located in a mountain resort in the North-East of Italy. Due to the fact that the people varied during the year's seasons (2000 resident people and 2000 tourists) the RBC system was insufficient to meet the effluent standards. The MBBR applied system consists of the FLOCOR-RMP®plastic media with a specific surface area of about 160 m2/m3 (internal surface only). Nitrogen and carbon removal from wastewater was investigated over a 1-year period, with two different plant lay-outs: one-stage (only MBBR) and two stage system (MBBR and rotating biological contactors in series). The systems have been operated at low temperature (5–15°C). 50% of the MBBR volume (V=79 m3) was filled. The organic and ammonium loads were in the average 7.9 gCOD m−2 d−1 and 0.9 g NH4−N m−2 d−1. Typical carbon and nitrogen removals in MBBR at temperature lower than 8°C were respectively 73% and 72%.

Integration of chemical and biological oxidation in a SBBR for tannery wastewater treatment

2004 ◽  
Vol 50 (10) ◽  
pp. 107-114 ◽  
Author(s):  
C. Di Iaconi ◽  
F. Bonemazzi ◽  
A. Lopez ◽  
R. Ramadori
Keyword(s):  
Wastewater Treatment ◽  
Chemical Oxidation ◽  
Biofilm Reactor ◽  
Flow Dynamics ◽  
Laboratory Scale ◽  
Tannery Wastewater ◽  
Biological Degradation ◽  
Bed Porosity ◽  
Sequencing Batch Biofilm Reactor ◽  
Innovative Process

This paper reports the results of an investigation aimed at evaluating the laboratory-scale performance of an innovative process for treating tannery wastewater. In this process, biological degradation, carried out in a sequencing batch biofilm reactor (SBBR), is combined with chemical oxidation by ozone. Tannery wastewater treatment was carried out, at laboratory scale, on a real primary effluent coming from a centralised plant treating wastewater produced by a large tannery district in Northern Italy. SBBR performance both without and with ozonation, was assessed with very satisfactory results. In particular, in the latter instance the recorded COD, TKN and TSS average removals, (96%), (92%) and (98%) respectively, allowed the maximum allowable concentration values fixed by the Italian regulation in force to be achieved without any additional polishing step. During the investigation biofilm properties (biofilm concentration and biofilm density) and flow dynamics aspects (head loss, shear stress, bed porosity) were also studied. A major feature of the process is that, with or without ozonation, it was characterised by very low specific sludge production (0.05 kgVSS/kgCODremoved) and high biofilm density (i.e. 87-122 gVSS/Lsludge) both contributing to a rather high biofilm concentration (i.e. 31-44 gTSS/Lfilter).

Experimental study on sequencing batch biofilm reactor with biological filtration (SBBR-BF) for wastewater treatment

2004 ◽  
Vol 48 (11-12) ◽  
pp. 299-307 ◽  
Author(s):  
T.W. Li ◽  
Y.Z. Peng ◽  
Y.Y. Wang ◽  
G.B. Zhu ◽  
W.Q. Chi ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Laboratory Experiment ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Biofilm Reactor ◽  
Treatment Technology ◽  
Biological Filtration ◽  
Efficient System ◽  
Filtration Cycle ◽  
Sequencing Batch Biofilm Reactor

A novel wastewater treatment technology combining a sequencing batch biofilm reactor and biological filtration in an SBBR-BF system was presented. Elastic plastic filaments were fixed as biofilms carrying media. Particle materials (sand or anthracite) and the settled sludge constituted the filtration layer. In the laboratory studies, operating results of SBR, SBBR and SBBR-BF were compared. Better quality and stable water quality of effluent could be achieved in SBBR-BF because the fixed film and filtration layer were added in the reactor. Other laboratory experiment results indicated that slow filtration, cycle water stirring and backwashing making use of the settled supernatant are successful methods for preventing clogging and saving energy. The velocity and headloss of filtration were significantly impacted by different MLSS concentration. The MLSS concentration in the reactor must be less than 1,400 mg/L for optimal results. The average velocity of filtration ranging from 0.6 to 1.0 m/h, the backwash velocity of 10–15 m/h and the backwash time of 20 seconds are recommended according to the laboratory experiment. On-site experiment and study showed that SBBR-BF is a stable and efficient system for domestic wastewater treatment, and is particularly suited for small wastewater treatment plants, because of the simple operation and compact installation.

Anaerobic sequencing batch biofilm reactor applied to automobile industry wastewater treatment: Volumetric loading rate and feed strategy effects

2008 ◽  
Vol 47 (8) ◽  
pp. 1374-1383 ◽  
Author(s):  
Ricardo Polisaitis Oliveira ◽  
José Antonio Ghilardi ◽  
Suzana Maria Ratusznei ◽  
José Alberto Domingues Rodrigues ◽  
Marcelo Zaiat ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Automobile Industry ◽  
Loading Rate ◽  
Biofilm Reactor ◽  
Sequencing Batch Biofilm Reactor ◽  
Feed Strategy ◽  
Volumetric Loading ◽  
Industry Wastewater

Operation of a full-scale pumped flow biofilm reactor (PFBR) under two aeration regimes

2011 ◽  
Vol 64 (6) ◽  
pp. 1218-1225 ◽  
Author(s):  
E. O'Reilly ◽  
M. Rodgers ◽  
E. Clifford
Keyword(s):  
Municipal Wastewater ◽  
Average Energy ◽  
Oxygen Demand ◽  
Ammonium Nitrogen ◽  
Full Scale ◽  
Biofilm Reactor ◽  
Novel Technology ◽  
Sequencing Batch Biofilm Reactor ◽  
Average Energy Consumption ◽  
L 14

A novel technology suitable for centralised and decentralised wastewater treatment has been developed, extensively tested at laboratory-scale, and trialled at a number of sites for populations ranging from 15 to 400 population equivalents (PE). The two-reactor-tank pumped flow biofilm reactor (PFBR) is characterised by: (i) its simple construction; (ii) its ease of operation and maintenance; (iii) low operating costs; (iv) low sludge production; and (v) comprising no moving parts or compressors, other than hydraulic pumps. By operating the system in a sequencing batch biofilm reactor (SBBR) mode, the following treatment can be achieved: 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and total suspended solids (TSS) reduction; nitrification and denitrification. During a 100-day full-scale plant study treating municipal wastewater and operating at 165 PE and 200 PE (Experiments 1 and 2, respectively), maximum average removals of 94% BOD5, 86% TSS and 80% ammonium-nitrogen (NH4-N) were achieved. During the latter part of Experiment 2, effluent concentrations averaged: 14 mg BOD5/l; 32 mg CODfiltered/l; 14 mg TSS/l; 4.4 mg NH4-N/l; and 4.0 mg NO3-N/l (nitrate-nitrogen). The average energy consumption was 0.46–0.63 kWh/m3treated or 1.25–1.76 kWh/kg BOD5 removed. No maintenance was required during these experiments. The PFBR technology offers a low energy, minimal maintenance technology for the treatment of municipal wastewater.

Tannery Wastewater Treatment by Sequencing Batch Biofilm Reactor

2003 ◽  
Vol 37 (14) ◽  
pp. 3199-3205 ◽  
Author(s):  
C. Di Iaconi ◽  
A. Lopez ◽  
R. Ramadori ◽  
R. Passino
Keyword(s):  
Wastewater Treatment ◽  
Biofilm Reactor ◽  
Tannery Wastewater ◽  
Sequencing Batch Biofilm Reactor

Increased nitrogen removal in existing volumes at Sundet wastewater treatment plant, Växjö

2014 ◽  
Vol 9 (2) ◽  
pp. 215-224 ◽  
Author(s):  
Anneli Andersson Chan ◽  
Niklas Johansson ◽  
Magnus Christensson
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Full Scale ◽  
Biofilm Reactor ◽  
Main Stream ◽  
Ammonium Oxidation ◽  
N Removal

Many wastewater treatment plants need to improve their nitrogen removal due to stricter requirements and increasing loads. This often means larger bioreactor volumes, which can be very expensive and is sometimes impossible if space is limited. Therefore, there is a need for compact hybrid solutions that can increase capacity within existing volumes. Two full-scale demonstration projects using moving bed biofilm reactor (MBBR) technology has proven to be an efficient way to treat nitrogen in existing volumes at Sundet wastewater treatment plant in Växjö. Increased nitrification and denitrification capacity in parts of the main stream were demonstrated through the Hybas™ process, a combination of MBBR and activated sludge using the integrated fixed-film activated sludge technology. The ANITA™ Mox process, using autotrophic N-removal through anaerobic ammonium oxidation (anammox), provided high nitrogen removal for the sludge liquor. Data collected on-site for over a year are analyzed and compared with the performance of conventional treatment systems. These two full-scale demonstration projects have been a successful learning experience in identifying and correcting both process and operational issues, which may not have arisen at pilot scale. The set objectives in terms of nitrogen removal were met for both processes and design modifications have been identified that will improve future operation at Sundet WWTP.

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