Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant

Coşkuner, Gülnur; Jassim, Majeed S.

doi:10.1002/jctb.1808

Cited by 8 publications

(2 citation statements)

References 32 publications

(23 reference statements)

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“…This present study has investigated the feasibility of using UMSBs for domestic wastewater treatment, focusing on the nitrification performance. To avoid the side effects of high organic loading on nitrification that accelerated heterotrophic bacterial growth and inhibited the nitrification (Coskuner and Jassim 2008), the UMSB performance for domestic wastewater treatment was firstly investigated at a low COD LR level of 0.3 kg m -3 day -1 as well as a DO level (0.3-0.5 mg l -1 ) similar to that in our previous study (Zheng et al 2011) (phase 1). However, a low ammonia nitrogen (NH 3 -N) reduction (24%) was obtained during phase 1 (see ''Results and discussion'' section).…”

Section: Introductionmentioning

confidence: 99%

Efficient COD removal and nitrification in an upflow microaerobic sludge blanket reactor for domestic wastewater

Zheng

Cui

2011

Biotechnol Lett

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The treatment performance of an upflow microaerobic sludge blanket reactor (UMSB) for synthetic domestic wastewater was investigated at two dissolved oxygen (DO) levels, 0.3-0.5 and 0.7-0.9 mg l(-1), focusing on nitrification performance. The higher DO level induced complete nitrification of ammonia nitrogen (NH(3)-N), achieving chemical oxygen demand and NH(3)-N removals of 97 and 92%, respectively. There were consistently significantly higher nitrate nitrogen (NO(3)-N) and nitrite nitrogen (NO(2)-N) levels in the effluent, with ~66% of newly-produced oxidised nitrogen as NO(2)-N. Despite the high nitrification efficiency, only about 23% of the removed NH(3)-N amount from the influent was ultimately transformed into oxidised nitrogen due to the simultaneous nitrification-denitrification. Sludge blanket development and granulation occurred simultaneously in the UMSB.

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Section: Introductionmentioning

confidence: 99%

Efficient COD removal and nitrification in an upflow microaerobic sludge blanket reactor for domestic wastewater

Zheng

Cui

2011

Biotechnol Lett

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“…Due to these characteristics, it is difficult to obtain and maintain sufficient nitrifiers in wastewater treatment plants (WWTPs), if solids retention time (SRT) gets shorter [ 3 ]. And as a consequence, it is difficult to maintain nitrification in municipal and industrial wastewater treatment plants (WWTPs) [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Shifts in Nitrification Kinetics and Microbial Community during Bioaugmentation of Activated Sludge with Nitrifiers Enriched on Sludge Reject Water

Peng

Pan

2012

Journal of Biomedicine and Biotechnology

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This study used two laboratory-scale sequencing batch reactors (SBRs) to evaluate the shifts in nitrification kinetics and microbial communities of an activated sludge sewage treatment system (main stream) during bioaugmentation with nitrifiers cultivated on real sludge reject water (side stream). Although bioaugmentation exerted a strong influence on the microbial community and the nitrification kinetics in the main stream, there was 58% of maximum ammonia uptake rate (AUR) and 80% of maximum nitrite uptake rate (NUR) loss of the seed source after bioaugmentation. In addition, nitrite accumulation occurred during bioaugmentation due to the unequal and asynchronous increase of the AUR (from 2.88 to 13.36 mg N/L·h) and NUR (from 0.76 to 4.34 mg N/L·h). FISH results showed that ammonia oxidizing bacteria (AOB) was inclined to be washed out with effluent in contrast to nitrite oxidizing bacteria (NOB), and Nitrosococcus mobilis lineage was the dominant AOB, while the dominant NOB in the main stream gradually transferred from Nitrospira to Nitrobacter. Nitrospina and Nitrococcus which existed in the seed source could not be detected in the main stream. It can be inferred that nitrite accumulation occurred due to the mismatch of NOB structure but washed out with effluent.

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Effects of Cr(VI) on the performance and kinetics of the activated sludge process

Cheng

Jiang

et al. 2011

Bioresource Technology

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Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant

Cited by 8 publications

References 32 publications

Efficient COD removal and nitrification in an upflow microaerobic sludge blanket reactor for domestic wastewater

Efficient COD removal and nitrification in an upflow microaerobic sludge blanket reactor for domestic wastewater

Shifts in Nitrification Kinetics and Microbial Community during Bioaugmentation of Activated Sludge with Nitrifiers Enriched on Sludge Reject Water

Effects of Cr(VI) on the performance and kinetics of the activated sludge process

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