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学者姓名：彭永臻
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Abstract ：
Nutrient removal from wastewater is crucial for global wastewater recycling and sustainable reuse. However, traditional methods for nitrogen and phosphorus removal face limitations in terms of energy consumption, operational complexity and environmental impact. Here we develop a floc management strategy to integrate anammox and enhanced biological phosphorus removal (EBPR) processes in a single-stage hybrid system (biofilms and flocs). This integrated approach resolves the conflicts between anammox and EBPR processes concerning ecological niche and solid retention time, enabling ultraefficient nitrogen and phosphorus removal efficiencies of 97.7 +/- 1.3% and 97.4 +/- 0.7%, respectively, in low-carbon municipal wastewater treatment. Notably, anammox benefitted from substrate competition with endogenous denitrification (both nitrite and nitrate) with floc loss, resulting in a significant enrichment of anammox bacteria in biofilms (12.5%) under mainstream conditions. Meanwhile, controlling floc concentrations at around 1,000 mg l-1 could maintain low polyphosphate levels in flocs, effectively addressing the additional phosphorus removal burden imposed by the enrichment of phosphorus-accumulating organisms in biofilms. This work offers a transformative solution to the long-standing challenge of integrating anammox and EBPR, paving the way for more sustainable and energy-efficient nutrient removal in wastewater treatment.
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| GB/T 7714 | Dan, Qiongpeng , Zhang, Qiong , Wang, Tong et al. Floc management enables integrated anammox and enhanced biological phosphorus removal for sustainable ultra-efficient nutrient removal [J]. | NATURE WATER , 2025 . |
| MLA | Dan, Qiongpeng et al. "Floc management enables integrated anammox and enhanced biological phosphorus removal for sustainable ultra-efficient nutrient removal" . | NATURE WATER (2025) . |
| APA | Dan, Qiongpeng , Zhang, Qiong , Wang, Tong , Wang, Hanbin , Peng, Yongzhen . Floc management enables integrated anammox and enhanced biological phosphorus removal for sustainable ultra-efficient nutrient removal . | NATURE WATER , 2025 . |
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Abstract ：
为探究低C/N城镇污水处理在无外加碳源的情况下实现深度脱氮除磷的效能，试验以实际城镇生活污水为处理对象，搭建了日处理规模为100 m~3·d~(-1)的A~2/O-BCO前置反硝化除磷中试，并从中试快速启动、工况调整与优化、微生物群落分析等角度进行研究.结果表明，通过先在A~2/O单元与BCO单元中分别富集聚磷菌与硝化菌，再增加硝化液回流以富集反硝化除磷菌（DPAOs）的方式，可实现A~2/O-BCO前置反硝化除磷中试的快速启动.A~2/O单元厌氧/缺氧/好氧容积比调整为3∶5∶1，硝化液回流比设定为250%时，缺氧段对磷去除率的平均值达到95%，平均出水PO_4~(3-)-P浓度小于0.2 mg·L~(-1)，出水TN小于11 mg·L~(-1).通过分子生物学分析发现，除磷菌（PAOs）与硝化菌丰度显著提高，Candidatus Accumulibacter的相对丰度从原始种泥的2%增加到14%，已被证实具有反硝化聚磷功能的Dechloromonas的相对丰度从原始种泥的2%增加到7%,BCO单元中的生物膜上，Nitrosomonas的相对丰度为5.91%,Nitrospira的相对丰度为7.58%.
Keyword ：
前置反硝化除磷 前置反硝化除磷 快速启动 快速启动 无外加碳源 无外加碳源 低C/N城镇污水 低C/N城镇污水 中试规模 中试规模
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| GB/T 7714 | 周庆国 , 苏健 , 陈东旭 et al. A~2/O-BCO前置反硝化除磷中试的启动与优化运行 [J]. | 环境科学学报 , 2024 , 44 (03) : 13-22 . |
| MLA | 周庆国 et al. "A~2/O-BCO前置反硝化除磷中试的启动与优化运行" . | 环境科学学报 44 . 03 (2024) : 13-22 . |
| APA | 周庆国 , 苏健 , 陈东旭 , 彭永臻 . A~2/O-BCO前置反硝化除磷中试的启动与优化运行 . | 环境科学学报 , 2024 , 44 (03) , 13-22 . |
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Abstract ：
Achieving stable and high-rate partial nitrification (PN) remains a worldwide technical conundrum in lowstrength mainstream conditions. This study successfully achieved ultrarapid mainstream PN within 8 days under a saturated dissolved oxygen (DO) supply strategy, reaching a record-breaking PN rate of over 1.0 kg N m(- 3) d(- 1) treating municipal wastewater. Stable PN was maintained for over 200 days with an ultrahigh nitrite accumulation ratio of 98.5 +/- 0.9 %, resilient to seasonal fluctuations in temperature (16.0-25.6 degrees C) and load (NH4+-N, 40-80 mg N/L). Kinetics revealed a remarkable 159.1-fold increase in the maximum activity ratio of ammonia-oxidizing bacteria (AOB) to nitrite-oxidizing bacteria (NOB). The faster response of AOB to saturated DO stimulated its highest activity difference with NOB, contributing to the AOB (Nitrosomonas oligotropha) boom and the elimination of NOB groups (-99.9 %). Our results highlight the importance of promoting AOB rather than solely focusing on NOB suppression for initiating and stabilizing high-rate mainstream PN.
Keyword ：
Dissolved oxygen Dissolved oxygen Mainstream wastewater Mainstream wastewater NOB elimination NOB elimination Nitrite accumulation Nitrite accumulation Ammonium oxidation rate Ammonium oxidation rate
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| GB/T 7714 | Dan, Qiongpeng , Li, Xiyao , Zhang, Fangzhai et al. Saturated dissolved oxygen-driven high-rate and ultrastable partial nitrification in municipal wastewater [J]. | BIORESOURCE TECHNOLOGY , 2024 , 413 . |
| MLA | Dan, Qiongpeng et al. "Saturated dissolved oxygen-driven high-rate and ultrastable partial nitrification in municipal wastewater" . | BIORESOURCE TECHNOLOGY 413 (2024) . |
| APA | Dan, Qiongpeng , Li, Xiyao , Zhang, Fangzhai , Du, Rui , Li, Jialin , Wang, Tong et al. Saturated dissolved oxygen-driven high-rate and ultrastable partial nitrification in municipal wastewater . | BIORESOURCE TECHNOLOGY , 2024 , 413 . |
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Abstract ：
Anammox-based processes are pivotal for elevating nitrogen removal efficiency in municipal wastewater treatment. This study established a novel HF-EPDA system combined in-situ hydrolytic fermentation (HF) with endogenous partial denitrification (EPD) and anammox. Slowly-biodegradable organic matter (SBOM) was degraded and transformed into endogenous polymers for driving production of sufficient nitrite by EPD, further promoted the nitrogen removal via anammox process. Processes above formed positive feedback, guaranteeing the robustness and recoverability of system. After a 92-day suspension during operation, advanced nitrogen removal was still achieved with excellent nitrogen removal efficiency of 95.84 +/- 1.73 %, treating with actual domestic wastewater and synthetic nitrate wastewater. Candidatus Brocadia and Candidatus Competibacter were dominant bacteria on biofilms responsible for the anammox and EPD process respectively, while the main hydrolytic fermentation organisms norank_o SBR1031 was enriched in floc sludge. This study highlights the reliable potential for expanding anammox application with simultaneous improvement of SBOM utilization.
Keyword ：
Slowly-biodegradable organic matter (SBOM) Slowly-biodegradable organic matter (SBOM) Anammox Anammox Hydrolytic fermentation (HF) Hydrolytic fermentation (HF) Endogenous partial denitrification (EPD) Endogenous partial denitrification (EPD)
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| GB/T 7714 | Xie, Chen , Li, Xiyao , Zhang, Qiong et al. Achieving advanced nitrogen removal with anammox and endogenous partial denitrification driven by efficient hydrolytic fermentation of slowly-biodegradable organic matter [J]. | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
| MLA | Xie, Chen et al. "Achieving advanced nitrogen removal with anammox and endogenous partial denitrification driven by efficient hydrolytic fermentation of slowly-biodegradable organic matter" . | BIORESOURCE TECHNOLOGY 414 (2024) . |
| APA | Xie, Chen , Li, Xiyao , Zhang, Qiong , Zhang, Lujing , Cao, Xiaoxin , Peng, Yongzhen . Achieving advanced nitrogen removal with anammox and endogenous partial denitrification driven by efficient hydrolytic fermentation of slowly-biodegradable organic matter . | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
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Abstract ：
For low carbon-to-nitrogen ratio municipal wastewater, full utilization of carbon sources is positive in reducing carbon emissions and carbon source addition. This study evaluated and proposed appropriate anaerobic duration control to improve nitrogen and phosphorus removal performance in Denitrifying Phosphorus Removal and Partial Denitrification coupled with Anammox (DPR-PDA) system. Excessive anaerobic duration resulted in wasted carbon source, anaerobic stage should be stopped after carbon source had been utilized. Hydraulic Retention Time-Anaerobic (HRT-An) of R1 was shortened from 5h to 0.56h, while R2 was maintained at 5h. The removal efficiency of nitrate (NO3-) were 91.7% in R1 and 71.5% in R2. Peak of NO2- accumulation (Peak-NO2--N) during denitrification in R1 was 4.5 times than in R2. Candidatus_Brocadia as anammox bacteria was self-enriched, the abundance in R1 was 4.67 times than in R2. This provided a practical guide for optimization of wastewater treatment processes and application of anammox technology.
Keyword ：
Anammox bacteria self-enrichment Anammox bacteria self-enrichment Anaerobic duration Anaerobic duration Nitrite accumulation Nitrite accumulation Carbon source utilization Carbon source utilization
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| GB/T 7714 | Su, Yunlong , Li, Xiyao , Wang, Jiao et al. Effect of anaerobic duration on nitrogen and phosphorus removal and carbon source utilization in integrated denitrifying phosphorus removal and partial denitrification coupled with anammox system [J]. | JOURNAL OF CLEANER PRODUCTION , 2024 , 474 . |
| MLA | Su, Yunlong et al. "Effect of anaerobic duration on nitrogen and phosphorus removal and carbon source utilization in integrated denitrifying phosphorus removal and partial denitrification coupled with anammox system" . | JOURNAL OF CLEANER PRODUCTION 474 (2024) . |
| APA | Su, Yunlong , Li, Xiyao , Wang, Jiao , Du, Rui , Xue, Xiaofei , Shi, Yanwei et al. Effect of anaerobic duration on nitrogen and phosphorus removal and carbon source utilization in integrated denitrifying phosphorus removal and partial denitrification coupled with anammox system . | JOURNAL OF CLEANER PRODUCTION , 2024 , 474 . |
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Abstract ：
Challenges in obtaining stable nitrite have impeded the use of anammox in municipal wastewater treatment. This study explored the feasibility of using sludge fermentation products as carbon source and selective nitrification inhibitor to supply nitrite via partial nitrification (PN) and partial denitrification (PD). PD was initiated within 15 days, achieving nitrite transformation rate of over 90 % with a carbon/nitrogen ratio of 3 and a reaction time of 0.75 h. The dominant genus, Romboutsia, increased in relative abundance from 4.1 to 35 %. Organic acids in sludge fermentation products, like acetate (200 mg/L) and propionate (400 mg/L), selectively suppressed nitriteoxidizing bacteria (NOB) more than ammonia-oxidizing bacteria (AOB), leading to PN. Combining anaerobic exposure with sludge fermentation products addition achieved PN with over 80.0 % nitrite accumulation. AOB increased tenfold in the long term, significantly outpacing NOB growth. This strategy simplifies difficulty of anammox application and shows broad application potential in municipal wastewater treatment.
Keyword ：
Short-chain fatty acids Short-chain fatty acids Carbon source Carbon source Microbial community Microbial community Nitrification inhibitor Nitrification inhibitor Nitrite accumulation Nitrite accumulation
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| GB/T 7714 | Liu, Jinjin , Wang, Rui , Qiu, Shengjie et al. Feasibility of double nitrite supply through partial nitrification and partial denitrification driven by sludge fermentation [J]. | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
| MLA | Liu, Jinjin et al. "Feasibility of double nitrite supply through partial nitrification and partial denitrification driven by sludge fermentation" . | BIORESOURCE TECHNOLOGY 414 (2024) . |
| APA | Liu, Jinjin , Wang, Rui , Qiu, Shengjie , Peng, Yi , Peng, Yongzhen . Feasibility of double nitrite supply through partial nitrification and partial denitrification driven by sludge fermentation . | BIORESOURCE TECHNOLOGY , 2024 , 414 . |
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Abstract ：
Anaerobic ammonia oxidation (Anammox) exhibits promise for wastewater treatment, but the enrichment of anammox bacteria (AnAOB) in municipal wastewater treatment plants is a significant challenge. This study constructed a novel Anoxic-Anaerobic-Oxic An aerobic-Oxic (AAnO) process with a pure biofilm anoxic zone fed with actual fluctuating municipal wastewater and operated for six months to enrich AnAOB at ambient temperature. High- throughput sequencing (HTS), qPCR, and fluorescence in situ hybridization showed that AnAOB were successfully enriched in the anoxic biofilms, reaching 1.56 % relative abundance on day 75 detected by HTS. During the period from day 130 to day 186, the anammox process contributed to 55.8 +/- 19.2 % of the nitrogen removal in the anoxic zone. Phylogenetic analysis revealed this AnAOB species was closely related to Candidatus Brocadia fulgida. . This study provides technical support for the application of anammox in mainstream wastewater.
Keyword ：
Biofilm Biofilm Partial denitrification Partial denitrification Fluctuating municipal wastewater Fluctuating municipal wastewater Ambient temperature Ambient temperature
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| GB/T 7714 | Chen, Guo , Li, Jianwei , Zhang, Shujun et al. Novel Anoxic-Anaerobic-Oxic process successfully enriched anammox bacteria under actual municipal wastewater [J]. | BIORESOURCE TECHNOLOGY , 2024 , 412 . |
| MLA | Chen, Guo et al. "Novel Anoxic-Anaerobic-Oxic process successfully enriched anammox bacteria under actual municipal wastewater" . | BIORESOURCE TECHNOLOGY 412 (2024) . |
| APA | Chen, Guo , Li, Jianwei , Zhang, Shujun , Gao, Xiaoyu , Gu, Changkun , Lv, Xintao et al. Novel Anoxic-Anaerobic-Oxic process successfully enriched anammox bacteria under actual municipal wastewater . | BIORESOURCE TECHNOLOGY , 2024 , 412 . |
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Abstract ：
Nitrite supply was pretty significant to exogenous or endogenous partial denitrification (ExPD or EdPD) for their combination with anammox in removing nitrogen. This study investigated how temperature impacted the nitrite supply of ExPD and EdPD, through long-term experiments in two 10 L sequencing batch reactors (SBRs) and 12 batch temperature tests, with sodium acetate as organic. It was demonstrated that low temperature (5-15 degrees C) favored higher nitrite transformation rate (NTR) for two systems (1.1-1.3 and 1.1-1.2 times higher separately), and ExPD owned higher nitrite-supply ability than EdPD (32.8 % higher NTR). Moreover, quantitative reverse transcription PCR and 16srDNA sequencing were conducted, exploring the inherent mechanism and microbial dynamics. Results presented that more inhibition to transcription and translation of nirSK genes than narG in low temperature induced higher NTR. Besides, compared with ExPD, less microbial dynamics and granule size reduction occurred to EdPD, which was more capable of adapting to low temperature.
Keyword ：
Transcription mechanism Transcription mechanism Microbial dynamics Microbial dynamics Nitrite transformation rate Nitrite transformation rate Low temperature Low temperature Partial denitrification Partial denitrification
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| GB/T 7714 | Peng, Zhihao , Zhang, Qiong , Li, Xiyao et al. Exploring and comparing the impacts of low temperature to endogenous and exogenous partial denitrification: The nitrite supply, transcription mechanism, and microbial dynamics [J]. | BIORESOURCE TECHNOLOGY , 2023 , 370 . |
| MLA | Peng, Zhihao et al. "Exploring and comparing the impacts of low temperature to endogenous and exogenous partial denitrification: The nitrite supply, transcription mechanism, and microbial dynamics" . | BIORESOURCE TECHNOLOGY 370 (2023) . |
| APA | Peng, Zhihao , Zhang, Qiong , Li, Xiyao , Wang, Shuying , Peng, Yongzhen . Exploring and comparing the impacts of low temperature to endogenous and exogenous partial denitrification: The nitrite supply, transcription mechanism, and microbial dynamics . | BIORESOURCE TECHNOLOGY , 2023 , 370 . |
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Abstract ：
The application of partial nitritation-anammox (PNA) process suffers severe obstacles due to the instability of partial nitritation (PN) process. This study sought to evaluate the feasibility of endogenous partial denitratation (EPD) as a remediation or alternative to supply nitrite for the unstable PNA process. A novel strategy of optimal organics utilization through pre-anaerobic carbon storage and post-anoxic endogenous denitrification coupled with anammox was developed in a single-stage bioreactor treating actual municipal wastewater with low C/N (similar to 3.2). Specifically, the undesired NO2-/NH4+ ratio (2.4 to 0.04) and nitrate accumulation were obtained by increasing the aeration rate (0.6 to 1.8 L/min) to simulate the PN instability. Delightedly, advanced nitrogen removal efficiency (92.1%) was maintained despite a dramatic decrease in nitrite accumulation ratio from 97.6% to 2.6%. This was attributed to the significant increase in anammox contribution to total nitrogen removal from 30.2% to 80.5%. The steady nitrite flux supplied from EPD coupled with PN (EPD contribution increased from 0 to 97.0%) was assumed to be the main reason for the continually increasing abundance and bioactivity of anammox bacteria. Both the anammox bacteria (1.5%, Ca. Brocadia) and glycogen accumulating organisms (6.0%, responsible for EPD) were enriched and coexisted stably in the single reactor. Our study confirms that coupling EPD with anammox has great potential as a remediation for the unstable mainstream PNA process.
Keyword ：
Municipal wastewater Municipal wastewater Endogenous partial denitratation Endogenous partial denitratation Mainstream anammox Mainstream anammox Nutrient removal Nutrient removal Partial nitritation Partial nitritation
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| GB/T 7714 | Dan, Qiongpeng , Du, Rui , Wang, Tong et al. Endogenous partial denitritation as an efficient remediation to unstable partial nitritation-anammox (PNA) process: Bacteria enrichment and superior robustness [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 454 . |
| MLA | Dan, Qiongpeng et al. "Endogenous partial denitritation as an efficient remediation to unstable partial nitritation-anammox (PNA) process: Bacteria enrichment and superior robustness" . | CHEMICAL ENGINEERING JOURNAL 454 (2023) . |
| APA | Dan, Qiongpeng , Du, Rui , Wang, Tong , Sun, Tiantian , Li, Xiyao , Zhang, Qiong et al. Endogenous partial denitritation as an efficient remediation to unstable partial nitritation-anammox (PNA) process: Bacteria enrichment and superior robustness . | CHEMICAL ENGINEERING JOURNAL , 2023 , 454 . |
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Abstract ：
In practical anammox systems, ammonia-oxidizing microbes (AOM) inevitably coexisted with anammox bacteria (AnAOB) due to residue oxygen in influent, but the diversity and impact of AOM in the system remain unclear. In this study, a practical anammox-dominated system with high relative abundance (15.15-19.07 %) of AnAOB (including Ca. Brocadia and Ca. Kuenenia) was studied, which treated low-strength wastewater with dissolved oxygen of 0.24-0.27 mg/L. Results demonstrated that complete ammonia-oxidizing (comammox) bacteria was the most abundant AOM and dominant over other canonical nitrifying bacteria, wherein comammox amoA gene was 8.3-fold more abundant than ammonia-oxidizing bacteria (AOB) amoA gene. Phylogenetic results indicated that the comammox bacteria in this study belonged to comammox Nitrospira clade A. Notably, when treating real nitritation municipal wastewater, cooperative effect of anammox bacteria, comammox bacteria and heterotro-phic denitrifiers enhanced nitrogen removal efficiency to 92.9 +/- 1.1 %. Hence, these results show that the functional significance of comammox bacteria in engineered ecosystems was previously overlooked. Our findings highlight that comammox bacteria could be an essential functional group in mainstream anammox systems and possess a high potential for energy-efficient nitrogen removal.
Keyword ：
Ammonia-oxidizing microbes (AOM) Ammonia-oxidizing microbes (AOM) Comammox Comammox Nitrogen cycle Nitrogen cycle Anammox Anammox
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| GB/T 7714 | Cui, Huihui , Zhang, Liang , Zhang, Qiong et al. Enrichment of comammox bacteria in anammox-dominated low-strength wastewater treatment system within microaerobic conditions: Cooperative effect driving enhanced nitrogen removal [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 453 . |
| MLA | Cui, Huihui et al. "Enrichment of comammox bacteria in anammox-dominated low-strength wastewater treatment system within microaerobic conditions: Cooperative effect driving enhanced nitrogen removal" . | CHEMICAL ENGINEERING JOURNAL 453 (2023) . |
| APA | Cui, Huihui , Zhang, Liang , Zhang, Qiong , Li, Xiyao , Peng, Yongzhen . Enrichment of comammox bacteria in anammox-dominated low-strength wastewater treatment system within microaerobic conditions: Cooperative effect driving enhanced nitrogen removal . | CHEMICAL ENGINEERING JOURNAL , 2023 , 453 . |
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