Enhanced simultaneous organics and nutrients removal in tidal flow constructed wetland using activated alumina as substrate treating domestic wastewater

Tan, Xiaodong; Yang, Yunxia; Liu, Yongwang; Li, Xing; Fan, Xiao-Yan; Zhou, Zhiwei; Liu, Changjian; Yin, Wenchao

doi:10.1016/j.biortech.2019.02.036

Cited by 82 publications

(16 citation statements)

References 31 publications

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“…Typical nitrogen removal microorganisms are dominant in Proteobacteria, Bacteroidetes, and Planctomycetes, and they are detected in different sewage treatment processes (Tian et al, ). Proteobacteria have been reported by many studies to contain common denitrifiers and play a major role in N‐cycle for the removal of nitrogen (Shu, He, Yue, & Wang, ; Tan et al, ). Bacteroidetes has been shown to be associated with the degradation of cellulose‐rich organic wastes such as plant residues and agricultural wastes (Dennehy et al, ), and sludge fermentation system (Huang, Dong, Wang, & Feng, ).…”

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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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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“…were not found in this study, probably because the salt in the catholyte passed through the membranes and caused high anode salinity. Anaeromusa and Geobacter microbes existed extensively in substrate where lactate and citrate were carbon sources [65,66]. Dechlormonas was more active in domestic wastewater [66].…”

Section: Microbial Community Compositionmentioning

confidence: 99%

“…Anaeromusa and Geobacter microbes existed extensively in substrate where lactate and citrate were carbon sources [65,66]. Dechlormonas was more active in domestic wastewater [66]. In addition, land ll leachate as an anode substrate has a complex composition and high toxicity that may be inhibitory to those microorganisms.…”

Section: Microbial Community Compositionmentioning

confidence: 99%

Electricity generation and pollutants removal of landfill leachate by osmotic microbial fuel cells with different forward osmosis membranes

Jiang

Huang

Cai

et al. 2020

Preprint

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In this study, thin-film composite with embedded polyester screen (TFC-ES), cellulose triacetate with a cast nonwoven (CTA-NW) and cellulose triacetate with embedded polyester screen (CTA-ES) were examined as the intermediate membranes in osmotic microbial fuel cells (OsMFCs). The reactors were fed with actual landfill leachate and the performance was studied in two operation modes: active layer facing draw solution (AL-DS) and active layer facing feed solution (AL-FS). The OsMFC with CTA-ES exhibited the best energy generation (maximum power density: 0.44 W m-2) and pollutant removal efficiency (ammonia nitrogen: 70.12 ± 0.28%, total nitrogen: 74.04 ± 0.33%) in the AL-FS mode, which could be ascribed to the lowest internal resistance (236.75 ohm) and highest microbial richness. Pseudomonas was the highest proportion of microbial in OsMFCs. The results of this study has demonstrated the potential of OsMFCs for landfill leachate treatment.

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“…Over the last decades, constructed wetlands (CWs) have been wildly used and implemented for removing pollutants from a wild range of wastewaters [3]. The types of wastewater treated include domestic wastewater [4,5], rural wastewater [6], industrial wastewater [7], swine wastewater [8], agricultural wastewater [9], winery wastewater [10], and even landfill leachate [11]. Flores et al [10] compared six scenarios and three common methods to purify winery wastewater and found that the CW scenarios were the most environmentally friendly alternatives.…”

Section: Introductionmentioning

confidence: 99%

Numerical Models of Subsurface Flow Constructed Wetlands: Review and Future Development

et al. 2020

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Numerical model as a simulation tool was used to describe the pollutants transformation and degradation process in constructed wetlands (CWs). It can help provide insight into the “black box” and increase the understanding of the complex processes in CWs. In the last few decades, several process-based numerical models were developed to depict the pollutants removal processes in CWs, which include biochemical model, hydraulic model, reactive-transport model, plants model, clogging model, and coupling model combining two or more sub-models. However, there was a long way to go before fully understanding the decontamination mechanisms of CWs. On the one hand, single or a composite model coupling a small number of sub-models cannot fully reveal the decontamination processes. On the other hand, a comprehensive model including all sub-models of current cognition involves numerous parameters, most of which are interaction and cannot quantitatively determined, thus making the model complex and leading to diffuse interaction. Therefore, in order to describe the reaction processes in CWs more accurately, it is expected that all parameters should be quantified as far as possible in the future model. This study aims to provide a review of the numerical models of CWs and to reveal mechanism of decontamination. Based on the advantages and disadvantages of existing models, the study presented the improvement method and future research direction: (1) new detection/monitoring technique or computing method to quantitatively assess the parameters in CWs models, (2) correcting the simulation errors caused by the assumption of Activated Sludge Models (ASMs) and developing a complete biofilm reaction sub-model, (3) simplification of the comprehensive model, and (4) need of emerging pollutants modeling.

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Enhanced simultaneous organics and nutrients removal in tidal flow constructed wetland using activated alumina as substrate treating domestic wastewater

Cited by 82 publications

References 31 publications

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

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

Electricity generation and pollutants removal of landfill leachate by osmotic microbial fuel cells with different forward osmosis membranes

Numerical Models of Subsurface Flow Constructed Wetlands: Review and Future Development

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