Influence of fermentation liquid from waste activated sludge on anoxic/oxic- membrane bioreactor performance: Nitrogen removal, membrane fouling and microbial community

Han, Xiaomeng; Zhou, Zhen; Mei, Xi; Ma, Yue; Xie, Zhenfang

doi:10.1016/j.biortech.2017.11.090

Cited by 62 publications

(14 citation statements)

References 47 publications

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“…Both genera are known as denitrifiers, with the ability to store organic substrates as PHA, and producers of amyloid adhesins in the extracellular polymeric substances (EPS) . Another genus, Ferruginibacter , which is involved in the biosynthesis and exportation of EPS also increased during P‐II. As already mentioned, PAO genera and more specifically Candidatus Accumulibacter were found to be more abundant in the first half of P‐II, while GAO genera and more specifically Candidatus Competibacter dominated the second half of P‐II.…”

Section: Resultsmentioning

confidence: 99%

Biological nutrient removal from slaughterhouse wastewater via nitritation/denitritation using granular sludge: an onsite pilot demonstration

Dobbeleers

Caluwé

Dockx

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: In this study, an onsite pilot sequencing batch reactor (SBR) of 450 L was operated at a local Flemish slaughterhouse in two consecutive periods. During period I, nitrogen removal via nitritation/denitritation (Nit/DNit) was achieved by the use of an innovative startup strategy without seed sludge and subsequently maintained by the use of aeration phase length control based on the oxygen uptake rate (OUR). In period II, the operational strategy was modified. In order to obtain Nit/DNit granular sludge (GS), an anaerobic (feast) feeding was introduced followed by a dynamic controlled (OUR-based) aerobic (famine) reaction step. RESULTS: After 74 days, the local (Flemish) legislation standards for COD (125 mg O 2 L −1 ) and T-N (15 mg N L −1 ) were fulfilled. During period II, floccular sludge was partially transformed into GS, which resulted in increased COD and NH 4 -N conversion rates of 50 and 60% respectively. Average removal efficiencies for SCOD, N and P during period II were 89.5 ± 4.2, 88.8 ± 9.8 and 84.4 ± 9.3% respectively. Despite the relatively low biomass concentrations (2.5 g L −1 ), excellent sludge settling was reported, with SVI 30 < 100 mL g −1 from day 167 onwards. Moreover, it was found that the operational strategy and temperature variability had a crucial impact on the microbial community dynamics and granule growth.CONCLUSION: This study demonstrated the Nit/DNit BNR-GS system in a real operational environment through the operation of an onsite pilot plant.

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Section: Resultsmentioning

confidence: 99%

Biological nutrient removal from slaughterhouse wastewater via nitritation/denitritation using granular sludge: an onsite pilot demonstration

Dobbeleers

Caluwé

Dockx

et al. 2019

J of Chemical Tech & Biotech

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“…Steroidobacter , Thermomonas, and Rhodobacter were typical anoxic denitrifying bacteria (Fahrbach et al, ; Idi, Ibrahim, Mohamad, & Majid, ). Ferruginibacter normally functioned in the anoxic/oxic/membrane reactor (AO/MR), and the extracellular polymers (EPS) could release carbon sources to promote the denitrification (Han, Zhou, Mei, Ma, & Xie, ). The proper conditions with abundant carbon source and low oxygen in the final part of TB could promote microbial anoxic denitrification.…”

Section: Resultsmentioning

confidence: 99%

A novel pilot‐scale tubular bioreactor‐enhanced floating treatment wetland for efficient in situ nitrogen removal from urban landscape water: Long‐term performance and microbial mechanisms

Cui

Yang

Ding

et al. 2019

Water Environment Research

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In order to strengthen in situ nitrogen removal of urban landscape water, a novel pilot-scale tubular bioreactor-enhanced floating treatment wetland (TB-EFTW) was constructed, and the long-term performance and responsible microbial mechanisms were investigated in this study. The results showed that the system could remove 81.5% nitrogen from the landscape water after 240 days' operation. Moreover, the contribution rate of plant absorption to nitrogen was low (8.3%), which indicated that microbial biotransformation rather than plant absorption played a more key role in nitrogen removal in TB-EFTW system. The declining dissolved oxygen (DO) concentration along the axial direction of tubular bioreactor (TB) resulted in the sequential bacterial community of nitrifying, aerobic denitrifying, and anoxic denitrifying bacteria in the front, middle, and final part of TB. High-throughput sequencing results demonstrated that the internal environment of the system realized the coexistence of nitrifying, aerobic denitrifying and anoxic denitrifying process. The reason was mainly because that oxic-anoxic (O-A) areas were formed in sequence along the axial direction of tubular bioreactor. Overall, a unique advantage in nitrogen removal was achieved in TB-EFTW, which could provide important references for in situ treatment of urban landscape water. • Practitioner points• TB-EFTW strengthened nitrogen removal for in situ urban landscape water treatment. • Microbial conversion played a key role in nitrogen removal of the TB-EFTW system. • The unique distribution of oxic-anoxic (O-A) areas was formed in sequence along the TB. • Nitrification, aerobic, and anoxic denitrification were synergistically involved in the TB.• Key words agriculture; biological treatment; nitrogen removal; surface water

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“…They found the effectiveness was the balance of the direct effect of foulant removal and indirect effect of modification of the mixed liquor. Han, Zhou, Zhou, Mei, Ma, and Xie (2018) investigated the effects of waste activated sludge (WAS) fermentation liquid on anoxic/oxic-MBR. While WAS fermentation liquid improved denitrification, severe membrane fouling occurred.…”

Section: Fouling Measurement and Characterizationmentioning

confidence: 99%

Membrane processes

Arabi¹,

Pellegrin

Aguinaldo

et al. 2020

Water Environment Research

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This literature review provides a review for publications in 2018 and 2019 and includes information membrane processes findings for municipal and industrial applications. This review is a subsection of the annual Water Environment Federation literature review for Treatment Systems section. The following topics are covered in this literature review: industrial wastewater and membrane. Bioreactor (MBR) configuration, membrane fouling, design, reuse, nutrient removal, operation, anaerobic membrane systems, microconstituents removal, membrane technology advances, and modeling. Other subsections of the Treatment Systems section that might relate to this literature review include the following: Biological Fixed-Film Systems, Activated Sludge, and Other Aerobic Suspended Culture Processes, Anaerobic Processes, and Water Reclamation and Reuse. This publication might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants.

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Influence of fermentation liquid from waste activated sludge on anoxic/oxic- membrane bioreactor performance: Nitrogen removal, membrane fouling and microbial community

Cited by 62 publications

References 47 publications

Biological nutrient removal from slaughterhouse wastewater via nitritation/denitritation using granular sludge: an onsite pilot demonstration

Biological nutrient removal from slaughterhouse wastewater via nitritation/denitritation using granular sludge: an onsite pilot demonstration

A novel pilot‐scale tubular bioreactor‐enhanced floating treatment wetland for efficient in situ nitrogen removal from urban landscape water: Long‐term performance and microbial mechanisms

Membrane processes

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