Biological treatment of ammonium-rich wastewater by partial nitritation and subsequent anaerobic ammonium oxidation (anammox) in a pilot plant

Fux, C.; Boehler, M.; Huber, Philipp; Brunner, Irene; Siegrist, Hansruedi

doi:10.1016/s0168-1656(02)00220-1

Cited by 384 publications

(155 citation statements)

References 17 publications

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“…The continuously low effluent NO2 -concentration during stable reactor operation (Figure 3) indicates that the overall N elimination could be limited by the nitrification efficiency of the AAOB at low temperature and DO conditions rather than an inhibition of the AnAOB. The latter was also concluded for similar N elimination experiments in two separated reactors (35). Further pilot-scale implementations will determine under what conditions the RBC approach for complete autotrophic N removal can be optimized.…”

Section: Discussionmentioning

confidence: 68%

Start-up of Autotrophic Nitrogen Removal Reactors via Sequential Biocatalyst Addition

Pynaert

Smets²,

Beheydt³

et al. 2004

Environ. Sci. Technol.

135

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A procedure for start-up of oxygen-limited autotrophic nitrification-denitrification (OLAND) in a lab-scale rotating biological contactor (RBC) is presented. In this one-step process, NH 4 + is directly converted to N 2 without the need for an organic carbon source. The approach is based on a sequential addition of two types of easily available biocatalyst to the reactor during start-up: aerobic nitrifying and anaerobic, granular methanogenic sludge. The first is added as a source of aerobic ammonia-oxidizing bacteria (AAOB), the second as a possible source of planctomycetes including anaerobic ammonia-oxidizing bacteria (AnAOB). The initial nitrifying biofilm serves as a matrix for anaerobic cell incorporation. By subsequently imposing oxygen limitation, one can create an optimal environment for autotrophic N removal. In this way, N removal of about 250 mg of N L -1 d -1 was achieved after 100 d treating a synthetic NH 4 + -rich wastewater. By gradually imposing higher loads on the reactor, the N elimination could be increased to about 1.8 g of N L -1 d -1 at 250 d. The resulting microbial community was compared with that of the inocula using general bacterial and AAOB-and planctomycete-specific PCR primers. Subsequently, the RBC reactor was shown to treat a sludge digestor effluent under suboptimal and strongly varying conditions. The RBC biocatalyst was also submitted to complete absence of oxygen in a fixed-film bioreactor (FFBR) and proved able to remove NH 4 + with NO 2 -as electron acceptor (maximal 434 mg of NH 4 + -N (g of VSS) -1 d -1 on day 136). DGGE and real-time PCR analysis demonstrated that the RBC biofilm was dominated by members of the genus Nitrosomonas and close relatives of Kuenenia stuttgartiensis, a known AnAOB. The latter was enriched during FFBR operation, but AAOB were still present and the ratio planctomycetes/ AAOB rRNA gene copies was about 4.3 after 136 d of reactor operation. Whether this relates to an active role of AAOB in the anoxic N removal process remains to be solved.

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Section: Discussionmentioning

confidence: 68%

Start-up of Autotrophic Nitrogen Removal Reactors via Sequential Biocatalyst Addition

Pynaert

Smets²,

Beheydt³

et al. 2004

Environ. Sci. Technol.

135

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“…However, recent studies have shown that the actual bottleneck in the overall capacity of the autotrophic N-removal process is due to the limiting capacity of the first part of the treatment, that is, PN with the SHARON reactor [6]. This limitation is due to the low biomass concentration that can be achieved because it works without biomass retention to achieve and maintain PN [7].…”

Section: Introductionmentioning

confidence: 99%

High-throughput nitritation of reject water with a novel ammonium control loop: Stable effluent generation for anammox or heterotrophic denitritation

Torà

Lafuente

Garcia-Belinchón

et al. 2014

Chemical Engineering Journal

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“…Selective inhibition of NOBs can be achieved by creating proper operating conditions in the reactor, such as: high free ammonia/nitrous acid concentrations [12], low dissolved oxygen concentrations [13] or elevated temperature [14]. As nitritation consumes alkalinity due to two protons production per mole of oxidized ammonium, final NO 2 /NH 4 ratio depends on influent alkalinity and may be controlled by pH maintained in the reactor [15]. Necessity of only partial oxidation of ammonium in this processes reduces net oxygen required for nitrogen removal to 1.71 mg O 2 /mg N-NH 4 converted into gas if influent biodegradable organic matter is used to denitrify residual N-NO x [16].…”

Section: Partial Nitritationmentioning

confidence: 99%

One-stage deammonification start-up control using ion-selective electrodes (ISE) sensor

Miodoński

Muszyński-Huhajło

2017

E3S Web Conf.

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Abstract. Dynamic development of side-stream ammonia-rich streams treatment technologies creates need of new methods of control techniques. So far, most of available technologies are based on relatively simple sensors, such as pH probes. This article presents the results of an ion selective electrode used for controlling a one-stage deammonification process in the start-up period. Sensor applicability under alternating aerobic/anaerobic conditions and large fluctuations of measured substances concentrations was investigated. ISE probe was also used to verify Anammox bacteria response on elevated dissolved oxygen exposition at the beginning of the anaerobic phases preceded by aerobic phases.

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Biological treatment of ammonium-rich wastewater by partial nitritation and subsequent anaerobic ammonium oxidation (anammox) in a pilot plant

Cited by 384 publications

References 17 publications

Start-up of Autotrophic Nitrogen Removal Reactors via Sequential Biocatalyst Addition

Start-up of Autotrophic Nitrogen Removal Reactors via Sequential Biocatalyst Addition

High-throughput nitritation of reject water with a novel ammonium control loop: Stable effluent generation for anammox or heterotrophic denitritation

One-stage deammonification start-up control using ion-selective electrodes (ISE) sensor

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