Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Li, Jin; Qiang, Zhimin; Yu, Dawei; Wang, Dan; Zhang, Peiyu; Li, Yue

doi:10.1016/j.biortech.2016.07.081

Cited by 64 publications

(18 citation statements)

References 40 publications

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“…reported that the simultaneous partial nitrification, anammox and denitrification process was affected more by nitrogen loading rate (NLR) than by OLR. Li et al . reported that the SAD process was greatly affected by OLR, which was in agreement with the present work.…”

Section: Resultssupporting

confidence: 94%

“…Wang et al 35 reported that the simultaneous partial nitrification, anammox and denitrification process was affected more by nitrogen loading rate (NLR) than by OLR. Li et al 21 reported that the SAD process was greatly affected by OLR, which was in agreement with the present work. These results indicated that low mannitol (≤0.2 mmol L −1 ) feeding could result in enhancement of SAD performance treating saline wastewater.…”

Section: Long-term Effect Resulting From Mannitol Addition On Sad Prosupporting

confidence: 94%

“…where the subscripts represent anammox (ana), denitrification (den), removal (rem), influent (inf), and effluent (eff); and the concentrations of NH 4 + , NO 2 − and NO 3 − are all expressed in mg L −1 as N …”

Section: Methodsmentioning

confidence: 99%

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Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Yang

Zhu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Simultaneous anammox and denitrification (SAD) can remove carbon and nitrogen. However, its performance is suppressed under saline surroundings. In this work, mannitol was used to enhance a SAD process treating saline wastewater. RESULTS The optimum carbon and nitrogen removal was achieved at 0.2 mmol L−1 mannitol, during which ammonium removal efficiency (ARE), nitrite removal efficiency (NRE) and chemical oxygen demand (COD) removal efficiency were 96.95%, 93.70% and 90.05%, respectively. The maximum ammonium removal rate (ARR), nitrite removal rate (NRR) and the specific anammox activity (SAA) were increased by 25.49%, 55.84% and 33.83% with optimum addition (0.2 mmol L−1 mannitol) respectively. The diameter of sludge was enlarged with the addition of mannitol (≤0.2 mmol L−1). The Tseng‐Wayman model was more suitable to simulate the whole SAD process. The modified logistic model, the modified Boltzman model and the modified Gompertz model were all appropriate to describe nitrogen removal in a typical cycle with the addition of mannitol. CONCLUSION Mannitol was effective in enhancing a SAD process treating saline wastewater, and maximum nitrogen removal was achieved at mannitol = 0.2 mmol L−1. The Tseng‐Wayman model satisfactorily predicted the whole SAD process treating saline wastewater with mannitol addition. © 2018 Society of Chemical Industry

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Section: Resultssupporting

confidence: 94%

Section: Long-term Effect Resulting From Mannitol Addition On Sad Prosupporting

confidence: 94%

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Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Yang

Zhu

et al. 2018

J of Chemical Tech & Biotech

Self Cite

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“…Another study stated that anammox also could coexist with denitrifier bacteria in a simultaneous process. Anammox bacteria dominantly existed in low carbon condition meanwhile the high carbon was favored by denitrifier (54). Presence of ammonium and nitrite become the substrates of anammox bacteria.…”

Section: Challenges In Wastewater Treatment: the Risk Of Nitrogen Formentioning

confidence: 99%

Domestic Wastewater in Indonesia: Challenge in the Future Related to Nitrogen Content

Wijaya¹,

Soedjono²

2018

GEOMATE

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ABSTRACT:The option of reusing treated wastewater is becoming necessary for environment sustainability approach. In fact, wastewater effluent discharge regulations have become stricter leading to a better water quality. Municipal activities, agriculture, and rapid urbanization led to increased nitrogen and phosphorus discharge to the water system. More often, the effluents from municipal wastewater treatment plant failed to meet the national standard for effluent quality. Excess nutrients, mostly N and P is the main cause of eutrophication the which results in oxygen depletion, biodiversity reduction, fish kills, odor, and increased toxicity. Biological nutrient removal technologies are preferred and widely used to remove nitrogen and phosphorus from domestic wastewater and protect water quality. Chemical compositions in wastewater are highly diverse substances from simple compounds to complex polymers. Some wastewater samples were analyzed in this research. Conventional technology still retains the basic principle of complete nitrogen cycle through nitrification and denitrification. Anammox is a sustainable and cost-effective alternative to the basic method of nitrogen removal. Anammox has been identified as a new biotechnology for nitrogen reduction from wastewater. Compared to the common process of nitrogen removal, anammox can reduce 64% off aeration, 100% of an exogenous electron donor, and sludge production by 80-90%. Some benefits from anammox include high nitrogen removal rate, lower operational cost, and small space requirements. Anaerobic baffled reactor (ABR) in Indonesia has been used commonly as communal wastewater treatment. Promoting anammox process in ABR potentially become an improvement for ABR in removing nitrogen better. This combination process still outlined for further research.

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“…Anammox bacteria dominate at lower COD concentrations. More Anammox bacteria cause large ammonia removal, but little to no nitrate removal (Li, Qiang, Yu, Wang, Zhang, & Li, 2016).…”

Section: Mechanisms Of Nitrogen Removalmentioning

confidence: 99%

Investigation of Ammonia and Nitrate Removal From Municipal Wastewater Using Biowish

Holland¹

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This research entails investigation of ammonia, nitrate, and nitrite removal from wastewater using a proprietary blend of bacteria known as BiOWiSH TM. The degradation rates of ammonia, nitrate, and nitrite for Aqua were determined using wastewater at the San Luis Obispo Water Resource Recovery Facility (SLO WRRF). Laboratory and field experiments were conducted to test how Aqua compared with natural bacteria for removal of nitrogen compounds. Preliminary data suggested that Aqua performed nitrate removal best in SLO WRRF wastewater at the secondary clarifier. Aqua could perform anoxic and aerobic denitrification in secondary clarifier wastewater. In mineral media, Aqua removed 6.6 mg NO3-N/L/hr. In partially sterilized wastewater, Aqua removed 2.67 mg NO3-N/L/hr. Field experiments using a batch reactor suggested that Aqua aided in nitrate removal when dosed above 25 ppm in secondary clarifier wastewater. A dose of 25 ppm Aqua resulted in a 0.1 mg NO3-N/L/hr removal rate. A dose of 50 ppm Aqua resulted in a 0.15 mg NO3-N/L/hr. Aqua did not aid in ammonia or nitrate removal in sludgewash at the SLO WRRF likely due to high concentrations of nitrate and ammonia existing in the wastewater were toxic to Aqua. Aqua removed about 5 ppm more nitrate than a competitor bacteria blend in a laboratory setting. Activating Aqua to increase initial cell count before inoculation did not have any effect on removal. Providing partial aeration did not help nitrification rates and inhibited nitrate removal for Aqua. Laboratory experiments showed v that Aqua did not remove nitrate in final clarifier wastewater most likely due to a limited carbon source. Aqua can perform nitrification in mineral media. Aerobic activation of Aqua inhibited denitrification. Aqua activated anoxically can perform denitrification. Using a powder with 70% microbial cultures, instead of the 1% found in Aqua, resulted in quicker nitrate removal. Inoculating as a concentrated liquid versus a dry powder did not affect nitrate removal rates. Use of trace mineral media did not affect nitrate removal rates. vi ACKNOWLEDGMENTS I would like to thank BiOWiSH TM Technologies for funding this research project and providing the necessary bacterial mixes needed for experimentation. I would also like to thank them for providing this amazing opportunity and for their guidance throughout this project. I would also like to thank the San Luis Obispo Water Resource Recovery Facility for providing wastewater samples and allowing me to set my batch reactors up at the plant. They have been extremely nice and understanding throughout this project. This thesis research would not have been possible without the help of Dr. Nirupam Pal. Thank you for allowing me to participate in this amazing research opportunity and thank you for all of your guidance throughout my research. I would like to thank Dr. Rebekah Oulton and Dr. Amro El Badawy for being in my thesis committee and answering any questions I had about my thesis. I appreciate all the guidance you both have given me. I would als...

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Performance and microbial community of simultaneous anammox and denitrification (SAD) process in a sequencing batch reactor

Cited by 64 publications

References 40 publications

Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater

Domestic Wastewater in Indonesia: Challenge in the Future Related to Nitrogen Content

Investigation of Ammonia and Nitrate Removal From Municipal Wastewater Using Biowish

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