Simultaneous nitrification, denitrification and phosphorus removal in aerobic granular sequencing batch reactors with high aeration intensity: Impact of aeration time

He, Qiulai; Chen, Li; Zhang, Shujia; Wang, Li; Liang, J. Nellie; Wen-hao, Xia; Wang, Hongyu; Zhou, Jinping

doi:10.1016/j.biortech.2018.05.007

Cited by 85 publications

(21 citation statements)

References 48 publications

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“…During the last month of operations (days 487-522), the reactor worked under pseudo-stationary conditions and the nitrogen removal efficiency was 71 ± 6% (effluent nitrogen concentrations: 8.6 ± 2.0 mgTIN/L and 9.8 ± 2.2 mgTN/L). The nitrogen removal registered in the present study is comparable with other literature results for higher C/N wastewater treatment with AGS (68 -71% obtained by Chen et al (2011) with C/N = 10; 64 -86% obtained by He et al (2018) with C/ N = 9.7). Thus, considering the very low C/N of the treated wastewater (2.8 ± 1.3 g bCOD/gTN during Stage I, and 3.8 ± 1.6 g bCOD/gTN during Stage II), the obtained results are noteworthy, compared with the reference literature (Derlon et al, 2016;Lochmatter et al, 2014;Pronk et al, 2015a).…”

Section: Nitrogen Removalsupporting

confidence: 90%

Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge

Campo

Sguanci

Caffaz³

et al. 2020

Bioresource Technology

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This work reports on simultaneous nitrification, denitrification and phosphorus removal treating real domestic wastewater with low carbon/nitrogen (C/N) ratio by aerobic granular sludge (AGS). Operations at high sludge retention time (SRT = 61 ± 24 days) resulted in low biomass yield per chemical oxygen demand removed (COD rem ) (0.21 ± 0.01 gCOD x /gCOD rem ), lower COD demand for denitrification as well as high effluent quality in terms of total suspended solids (TSS) (22 ± 7 mgTSS/L). The average ratio between the biodegradable soluble COD stored anaerobically as polyhydroxyalkanoates (PHAs) and the N removed was 3.1 ± 0.6 gCOD sto /gN rem , suggesting that nitrification/denitrification occurred partly via the nitrite pathway. Results revealed that stable AGS process with high C/N/P removal efficiency of 84/71/96% can be obtained besides a low organic loading rate (0.43 ± 0.11 g COD/L/d) and influent C/N ratio (3.8 ± 1.6 g/g), resulting in a high effluent quality characterized by 25 ± 6 mg sCOD/L, 0.09 ± 0.

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Section: Nitrogen Removalsupporting

confidence: 90%

Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge

Campo

Sguanci

Caffaz³

et al. 2020

Bioresource Technology

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“…4B), indicating that the species richness was improved by the addition of external carbon source. The peaks (5.58, 0.039) occurred with the mixture of HAc and HPr on Day 80, suggesting the highest relative abundances of bacterial community (He et al, 2018). However, Shannon (4.59) and Simpson indexes (0.032) unexpectedly fell down with more HPr on Day 120, implying that HPr was not a suitable carbon source for DPR in terms of bacterial richness, which was in accordance with the poor nutrient metabolism performance (Fig.…”

Section: Effect Of Carbon Source On the Microbial Structure Communitymentioning

confidence: 80%

“…Combining with the microbial diversity (Fig. 4A-B), the results showed that more disparate microbial distributions were shared under the mixture of HAc and HPr, which had been proved that mixed carbon source decidedly shaped the bacterial community (He et al, 2018).…”

Section: Effect Of Carbon Source On the Microbial Structure Communitymentioning

confidence: 82%

Nutrient metabolism, mass balance, and microbial structure community in a novel denitrifying phosphorus removal system based on the utilizing rules of acetate and propionate

et al. 2020

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The effect of acetate (HAc) and propionate (HPr) on denitrifying phosphorus removal (DPR) was evaluated in a novel two-sludge A 2 /O -MBBR (anaerobic/anoxic/oxicmoving bed biofilm reactor) system. Results showed that it was the carbon source transformation and utilization especially the composition of poly-β-hydroxyalkanoates (PHA) (mainly poly-βhydroxybutyrate (PHB) and poly-bhydroxyvalerate (PHV)) decided DPR performance, where the the co-exist of HAc and HPr promoted the optimal nitrogen (85.77%) and phosphorus (91.37%) removals. It facilitated the balance of PHB and PHV and removing 1mg NO3 -(PO4 3-) consumed 3. 04 -4.25 (6.84 -9.82) mgPHA, where approximately 40 -45% carbon source was saved. Mass balance revealed the main metabolic pathways of carbon (MAn,C (consumed amount in anaerobic stage) and

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“…Even in some cases, the development of cyanobacteria was resistant to the allelopathic secreted substances from the macrophytes [49]. A long-term and stable partial nitrification could be achieved in the intermittent aeration [50,51]. Besides, the suitable relatively calm state for cyanobacteria was disturbed by the aeration, resulting in the higher removal rate obtained in tank B with aeration than that in tank A without aeration (Figure 4).…”

Section: Discussionmentioning

confidence: 99%

An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test

Wang

Yin

Cai

et al. 2019

Water

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Water eutrophication is one of the most serious environmental problems in urban lakes and ponds due to the excessive nutrients. To deal with this problem, the development of methods for supporting ecological rehabilitation has been undertaken. Meanwhile, the trophic interactions during rehabilitation also have been analyzed. In this study, a new technique was employed to solve the water eutrophication problems in an urban pond. To evaluate the water eutrophication at a pilot scale, an enhanced artificial floating-type biological treatment system (FBTS) composed of a floating bed, macrophyte, artificial biofilm carrier (polyurethane sponge) and aerator could be used as equipment for urban pond remediation. In addition, FBTS was employed to decrease the total nitrogen (TN), ammonia-nitrogen (NH3-N), total phosphorus (TP) and chemical oxygen demand (COD) in water. Meanwhile, the changes of water qualities were monitored in the remediation process, and differences in phytoplankton functional group diversity were also registered. Cyanobacteria would decrease after the removal of P, and the diatom assemblage composition changed. The dominant species Cyanophyta were transformed to co-existed with Bacillariophyta, Pyrrophyta and Chlorophyta due to the improvement of water quality. Consequently, this new FBTS could be a promising eco-technology for the removal of nitrogen and phosphorus from eutrophic water, and even could promote the phytoplankton succession.

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Simultaneous nitrification, denitrification and phosphorus removal in aerobic granular sequencing batch reactors with high aeration intensity: Impact of aeration time

Cited by 85 publications

References 48 publications

Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge

Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge

Nutrient metabolism, mass balance, and microbial structure community in a novel denitrifying phosphorus removal system based on the utilizing rules of acetate and propionate

An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test

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