Influence of cell lysis by Fenton oxidation on cryptic growth in sequencing batch reactor (SBR): Implication of reducing sludge source discharge

Zhang, Yu; Meng, Chengcheng; He, Yueling; Wang, Xiaonuan; Xue, Gang

doi:10.1016/j.scitotenv.2021.148042

Cited by 6 publications

(6 citation statements)

References 60 publications

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“…SOUR value was relatively higher in lysis stages. Similar to this study, it was reported that sludge lysis increased sludge activity and accordingly increased the SOUR value [34,36]. An et al [37] on the other hand, observed a 33.1 % decrease in SOUR value in anaerobic-anoxic-aerobic process in sludge lysis with potassium ferrate.…”

Section: Sludge Characteristicssupporting

confidence: 87%

“…The release of organic and nutrients by the sludge lysis process increases the pollution load of the reactor. While some studies stated that the load increase due to sludge lysis decreased the reactor performance [31,32], some studies stated that it did not affect the reactor performance [18,33,34]. In this study, no change was observed in the COD and nitrogen removal efficiency as a result of the return of the sludge lysis effluent to the reactor.…”

Section: Treatment Performancementioning

confidence: 50%

“…Lv et al combined quicklime-based thermal alkaline sludge disintegration with SBR, which achieved a sludge reduction efficiency of about 40.1 % [33]. The rate of sludge reduction in SBR where Fenton oxidation was included for cell lysis was found to be 38 % [34]. In the study performed by combining electrochemical oxidation with anoxic-aerobic reactor, a sludge reduction of 39.1 % was obtained with lysis-cryptic growth [20].…”

Section: Sludge Reductionmentioning

confidence: 99%

“…It was stated that it was not economical if the part subjected to sludge disintegration was above 2 % of the flow-rate [39]. Zhang et al [34] used the Fenton method for sludge disintegration and subjected 5 % of the settled sludge volume to sludge disintegration. Sun et al [41] subjected 5 %, 8 %, 10 % and 15 % of the sludge to disintegration in the oxic-settling-anaerobic process and they stated that 10 % was the optimum value in terms of sludge reduction and lower and higher values decreased the sludge reduction efficiency.…”

Section: Selection Of Reactor Operating Parametersmentioning

confidence: 99%

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Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration

Gürtekin

2022

Ecological Chemistry and Engineering S

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In this study, alkaline-H2O2 sludge disintegration was combined with anoxic-aerobic sequencing batch reactor (SBR). The carbon obtained by alkaline-H2O2 sludge disintegration was used in the denitrification process and sludge reduction was achieved in the SBR process. In the SBR process, a 9 % increase in nitrogen removal efficiency was achieved with the improvement in the denitrification process. A sludge reduction efficiency of 43 % was obtained in the SBR process with alkaline-H2O2 sludge disintegration. A synergistic effect was obtained in the combination of alkaline and H2O2 methods and the sludge reduction increased by 8 %. By combining sludge disintegration into the SBR process, it is possible to reduce the amount of sludge formed, which is an important environmental problem, and to provide carbon source for the denitrification process.

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Section: Sludge Characteristicssupporting

confidence: 87%

Section: Treatment Performancementioning

confidence: 50%

Section: Sludge Reductionmentioning

confidence: 99%

Section: Selection Of Reactor Operating Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration

Gürtekin

2022

Ecological Chemistry and Engineering S

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“…The Shannon index of A3 was relatively increased, indicating an increase in community diversity. The Shannon index of A4 was decreased (Zhang et al, 2021). The Pielou_e index represents the evenness of the community, and its trend of the four reaction devices was the same as the previous analysis.…”

Section: Alpha Diversity Analysissupporting

confidence: 63%

Changes in microbial community during hydrolyzed sludge reduction

Liu,

Wu,

et al. 2023

Front. Microbiol.

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In this study, the effects of different enzymes (lysozyme, α-amylase and neutral protease) on sludge hydrolysis efficiency and microbial community in sequencing batch reactor (SBR) were introduced. The results showed that the hydrolysis efficiencies of the three enzymes were 48.5, 22.5 and 31%, respectively, compared with the accumulated sludge discharge of the blank control group. However, it has varying degrees of impact on the effluent quality, and the denitrification and phosphorus removal effect of the system deteriorates. The lysozyme that achieves the optimal sludge hydrolysis effect of 48.5% has the greatest impact on the chemical oxygen demand (COD), total nitrogen (TN), and nitrate nitrogen (NO3−-N) of the effluent. The sludge samples of the control group and the groups supplemented with different enzyme preparations were subjected to high-throughput sequencing. It was found that the number of OTUs (Operational Taxonomic Units) of the samples was lysozyme > α-amylase > blank control > neutral protease. Moreover, the abundance grade curve of the sludge samples supplemented with lysozyme and α-amylase was smoother, and the community richness and diversity were improved by lysozyme and α-amylase. The species diversity of the sludge supplemented with lysozyme and neutral protease was great, and the community succession was obvious. The introduction of enzymes did not change the main microbial communities of the sludge, which were mainly Proteobacteria, Actinobacteria and Bacteroidetes. The effects of three enzyme preparations on sludge reduction and microbial diversity during pilot operation were analyzed, the gap in microbial research was filled, which provided theoretical value for the practical operation of enzymatic sludge reduction.

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Integrating electrochemical pre-treatment with carrier-based membrane bioreactor for efficient treatment of municipal waste transfer stations leachate

Song

Sun

Xing

et al. 2023

Bioresource Technology

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Influence of cell lysis by Fenton oxidation on cryptic growth in sequencing batch reactor (SBR): Implication of reducing sludge source discharge

Cited by 6 publications

References 60 publications

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration

Changes in microbial community during hydrolyzed sludge reduction

Integrating electrochemical pre-treatment with carrier-based membrane bioreactor for efficient treatment of municipal waste transfer stations leachate

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Influence of cell lysis by Fenton oxidation on cryptic growth in sequencing batch reactor (SBR): Implication of reducing sludge source discharge

Cited by 6 publications

References 60 publications

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H2O2 Disintegration

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H2O2 Disintegration

Changes in microbial community during hydrolyzed sludge reduction

Integrating electrochemical pre-treatment with carrier-based membrane bioreactor for efficient treatment of municipal waste transfer stations leachate

Contact Info

Product

Resources

About

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration

Nitrogen Removal and Sludge Reduction in Anoxic-Aerobic Sequencing Batch Reactor with Alkaline-H₂O₂ Disintegration