Experience with an up-flow biological aerated filter (BAF) for tertiary treatment: from pilot trials to full scale implementation

Payraudeau, M.; Pearce, Alexandra R.; Goldsmith, Robert L.; Bigot, B.; Wicquart, F.

doi:10.2166/wst.2001.0754

Cited by 16 publications

(4 citation statements)

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“…This HRT is considerably less than that of other nitrification processes, such as the 60 min for up-flow, biological aerated filters (Payraudeau, Pearce, Bigot and Wicquart, 2001).…”

Section: /23mentioning

confidence: 90%

Particulate-biofilm, expanded-bed technology for high-rate, low-cost wastewater treatment: Nitrification

Dempsey

Lannigan

Minall³

2005

Water Research

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The performance of a particulate-biofilm, expanded-bed process for nitrification of activated sludge final effluent (ASFE) is reported for a plant receiving mixed industrial and domestic wastewater. The support material for the particulate-biofilms was glassy coke, to which the nitrifying bacteria attached and formed a highly active biofilm. An average nitrification rate of 1.7+/-0.6 kg m(expanded bed)(-3)d(-1) was recorded during operation of the bioreactor, which had a hydraulic residence time of 15 min. On average, the ASFE contained 12.6+/-3.7 g m(-3) NH3-N, which was reduced to 2.6+/-3.3 g m(-3) NH3-N. Furthermore, transfer of 10-12% of the oxygen in air was achieved using counter-current aeration. This investigation has demonstrated that a high rate of nitrification can be achieved with a particulate-biofilm, expanded-bed process. It has also demonstrated that the process can operate without backwashing and still remove particulate material from the ASFE feed.

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“…This HRT is considerably less than that of other nitrification processes, such as the 60 min for up-flow, biological aerated filters (Payraudeau, Pearce, Bigot and Wicquart, 2001).…”

Section: /23mentioning

confidence: 90%

Particulate-biofilm, expanded-bed technology for high-rate, low-cost wastewater treatment: Nitrification

Dempsey

Lannigan

Minall³

2005

Water Research

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“…Generally, nitrification is critically affected by water-temperature changes. Many researchers used and studied biofilm technology, such as moving bed biofilm reactors (MBBR) or BAFs, to solve nitrification problems at low temperature [15,20,21]. When the water temperature decreases, the ammonia-nitrogen-removal efficiency greatly decreases and only gradually recovers after a long period of adaptation to low temperatures [15].…”

Section: Low-concentration Ammonia-nitrogen Removalmentioning

confidence: 99%

Nitrification of low concentration ammonia nitrogen using zeolite biological aerated filter (ZBAF)

Kim

Lee

Choi

et al. 2019

Environmental Engineering Research

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This study focuses on nitrification through a biological aerated filter (BAF) that is filled with a zeolite medium at low concentrations of ammonia. The zeolite medium consists of natural zeolite powder. The BAF is operated under two types of media, which are a ball-type zeolite medium and expanded poly propylene (EPP) medium. Nitrification occurred in the zeolite BAF (ZBAF) when the influent concentration of ammonia nitrogen was 3 mg L-1, but the BAF that was filled with an EPP medium did not experience nitrification. The ammonia nitrogen removal efficiency of ZBAF was 63.38% and the average nitrate nitrogen concentration was 1.746 mg/L. The ZBAF was tested again after a comparison experiment to treat pond water, and municipal wastewater mixed pond water. The ZBAF showed remarkable ammonia-nitrogen treatment at low concentration and low temperature. During this period, the average ammonia nitrogen removal efficiency was 64.56%. Especially, when water temperature decreased to 4.7℃, ammonia nitrogen removal efficiency remained 79%. On the other hand, the chemical-oxygen demand (COD) and phosphorus-removal trends were different. The COD and phosphorus did not show as efficient treatment as the ammonia-nitrogen treatment.

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“…The plant receives an approximately equal mixture of domestic sewage and various industrial wastewaters. Some of these industrial wastewaters are a source of nitrification inhibitors (Payraudeau et al, 2001). Of historical note, it was at Davyhulme in 1914 that Ardern and Locket developed the batch activated sludge (AS) process and the site now has in use two continuous flow AS plants (ASP1 and ASP2).…”

Section: Pilot-scale Evaluation Of Ebbr Performancementioning

confidence: 99%

The Expanded Bed Biofilm Reactor (EBBR) – An Innovative Biofilm Approach for Tertiary Nitrification

McQuarrie¹,

Dempsey²,

Boltz³

et al. 2007

proc water environ fed

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The expanded bed biofilm reactor (EBBR) was developed by Advanced Bioprocess Development Ltd. (ABD) to provide a compact tertiary nitrification process. In terms of performance, the EBBR can meet an NH 3 -N discharge of less than 1 mg/L at high volumetric loading rates (1.0 kg NH 3 -N/m 3 expanded bed /day). This high rate results from a predominance of nitrifying bacteria immobilized as thin biofilms on small particles of a novel support medium, glassy coke. The resulting bed of biofilm-particles are fluidized by the upward flow of wastewater in the reactor column, thus forming an expanded bed. The continuous-flow expanded bed does not require periodic backwashing. The immobilization of biomass and lack of backwashing means that the system offers a long biofilm retention time (equivalent to an activated sludge age of > 30 days). This long residence time allows formation of a complex community of heterotrophic microbes, which includes bacteria, protozoa, rotifers, nematodes and oligochaetes. While providing tertiary nitrification treatment to activated sludge settled effluent at a pilot-scale, this heterotrophic community provided collateral removal of roughly 50 percent of the incoming biochemical oxygen demand (BOD) and total suspended solids (TSS). A reduction of bacteria counts was also observed.An engineering analysis was conducted to compare EBBR with proven-effective submerged biofilm technologies, namely the moving bed biofilm reactor (MBBR) and biological aerated filter (BAF), for a small municipal wastewater treatment case at a design daily average flow of 5,490 m 3 /day (1.45 mgd). For this case, the analysis suggested that EBBR could be competitive with established submerged biofilm treatment technologies in terms of overall system footprint, construction and capital cost. The EBBR technology is now being considered for demonstration scale testing and full-scale applications in the North American market.

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Experience with an up-flow biological aerated filter (BAF) for tertiary treatment: from pilot trials to full scale implementation

Cited by 16 publications

References 0 publications

Particulate-biofilm, expanded-bed technology for high-rate, low-cost wastewater treatment: Nitrification

Particulate-biofilm, expanded-bed technology for high-rate, low-cost wastewater treatment: Nitrification

Nitrification of low concentration ammonia nitrogen using zeolite biological aerated filter (ZBAF)

The Expanded Bed Biofilm Reactor (EBBR) – An Innovative Biofilm Approach for Tertiary Nitrification

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