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学者姓名：彭永臻
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摘要 ：
Biotreatment of high load hydrogen sulfide (H2S) can lead to rapid acidification of a bioreactor, which greatly challenges the application of bio-desulfurization technology. In this study, the bio-desulfurization performance was improved by enriching acidophilic mixotrophic sulfur-oxidizing bacteria (SOB) by adding organics under extremely acidic conditions (pH < 1.0). A biotrickling filter (BTF) for the removal of H2S was established and operated under pH < 1.0 for 420 days. In the autotrophic period, the maximum H2S elimination capacity (ECmax-H2S) was 135.8 g/ m(3)/h with biofilm mass remaining within 11.1 g/L-BTF. The autotrophic SOB bacterium Acidithiobacillus was dominant (62.1 %). When glucose was added to the BTF system, ECmax-H2S increased by 272 % to 464.3 g/m(3)/h as biofilm mass increased to 22.3 g/L-BTF. The acidophilic mixotrophic SOB bacteria Mycobacterium (78.4 %) and Alicyclobacillus (20.7 %) were enriched while Acidithiobacillus was gradually eliminated (< 0.1 %). Furthermore, the major sulfur me-tabolism pathways were identified to explore the desulfurization mechanism under extremely acidic conditions. To maintain optimal desulfurization performance and avoid biofilm overgrowth in the BTF system, biofilm mass should be maintained within 20-22 g/L-BTF. This can be achieved by adding 1.0 g/L-BTF glucose every 20 days under a load rate of H2S in 50-90 g/m3/h anda trickling liquid velocity of 1.8 m/h. Extremely acidic conditions eliminated non-aciduric microorganisms so that the addition of organics can increase the abundance of acidophilic mixotrophic SOB (> 99 %), thus offering a novel strategy for enhancing H2S removal.
关键词 ：
Biofilm mass Biofilm mass H2S removal H2S removal Mixotrophic SOB Mixotrophic SOB Extremely acidic conditions Extremely acidic conditions Sulfur metabolism pathways Sulfur metabolism pathways
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| GB/T 7714 | Jia, Tipei , Zhang, Liang , Sun, Shihao et al. Adding organics to enrich mixotrophic sulfur-oxidizing bacteria under extremely acidic conditions-A novel strategy to enhance hydrogen sulfide removal [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 854 . |
| MLA | Jia, Tipei et al. "Adding organics to enrich mixotrophic sulfur-oxidizing bacteria under extremely acidic conditions-A novel strategy to enhance hydrogen sulfide removal" . | SCIENCE OF THE TOTAL ENVIRONMENT 854 (2023) . |
| APA | Jia, Tipei , Zhang, Liang , Sun, Shihao , Zhao, Qi , Peng, Yongzhen . Adding organics to enrich mixotrophic sulfur-oxidizing bacteria under extremely acidic conditions-A novel strategy to enhance hydrogen sulfide removal . | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 854 . |
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摘要 ：
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.
关键词 ：
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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摘要 ：
A novel double-anammox process for advanced mainstream nitrogen removal was established using step-feed sequencing batch reactor (SBR) system with integration of suspend sludge and biofilms. Following optimization of influent distribution ratio, the effluent total inorganic nitrogen (TIN) was < 10.2 mg N/L, with influent TIN of 43.4 mg N/L, and anammox contributed 71.4% to TIN removal. Biological processes and batch tests revealed that gradient C/N reduction promoted denitratation/anammox in anoxic stage, and simultaneous nitritation and anammox were achieved in oxic stage. Specially, anammox maintained on biofilms with abundance over 109 copies/ (g dry sludge). High-throughput sequencing revealed that Thauera and Nitrosomonas were enriched in flocs. Furthermore, metagenomic sequencing confirmed that Thauera owns narG and napA (NO3--> NO2-) and Nitrosomonas owns amoA (NH4+-> NO2-), support stable NO2- supply for double-anammox. This mainstream anammox-dominant process could potentially be used for stable nitrogen removal in municipal wastewater treatment plants.
关键词 ：
Anammox Anammox Denitratation Denitratation Municipal wastewater Municipal wastewater Nitritation Nitritation Step-feed sequencing batch reactor Step-feed sequencing batch reactor
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| GB/T 7714 | Li, Wenyu , Li, Jianwei , Liu, Ying et al. Mainstream double-anammox driven by nitritation and denitratation using a one-stage step-feed bioreactor with real municipal wastewater [J]. | BIORESOURCE TECHNOLOGY , 2022 , 343 . |
| MLA | Li, Wenyu et al. "Mainstream double-anammox driven by nitritation and denitratation using a one-stage step-feed bioreactor with real municipal wastewater" . | BIORESOURCE TECHNOLOGY 343 (2022) . |
| APA | Li, Wenyu , Li, Jianwei , Liu, Ying , Gao, Ruitao , Deng, Liyan , Kao, Chengkun et al. Mainstream double-anammox driven by nitritation and denitratation using a one-stage step-feed bioreactor with real municipal wastewater . | BIORESOURCE TECHNOLOGY , 2022 , 343 . |
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摘要 ：
Partial nitrification and partial denitrification combined with anammox is a promising process for sewage treatment. In this study, real municipal wastewater was treated in a continuous two-stage anoxic/oxic (A/O) reactor. External mixed sludge fermentation products were added in the anoxic zone, simultaneously achieving partial nitrification and partial denitrification and achieving a high and relatively stable accumulation of nitrite. The maximum accumulation rates of NO2--N in A1.2 and A2.1-A2.4 zones of the reactor reached 70% and 61%- 37%, respectively, which improved denitrification efficiency and created conditions that supported the coupling of subsequent anammox. The influent nitrogen load of the system was 0.078 kg/(m(3)center dot d), and the mean influent and effluent total nitrogen were 51 and 12 mg/L, respectively. The mean total nitrogen removal rate reached 76%. Further analysis revealed that Hyphomicrobium (incomplete denitrifiers) and Nitrosomonas (ammonia oxidizing bacteria) were enriched, which may have facilitated the high nitrite accumulation. Moreover, the batch test showed that adding sludge fermentation during denitrification significantly suppressed nitrite reduction, resulting in the nitrite accumulation.
关键词 ：
Anammox Anammox Nitrite accumulation Nitrite accumulation Partial denitrification Partial denitrification Sludge fermentation products Sludge fermentation products
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| GB/T 7714 | Chen, Yao , Zhang, Ying , Zhang, Liang et al. Applicability of two-stage anoxic/oxic shortcut nitrogen removal via partial nitrification and partial denitrification for municipal wastewater by adding sludge fermentation products continuously [J]. | CHEMOSPHERE , 2022 , 287 . |
| MLA | Chen, Yao et al. "Applicability of two-stage anoxic/oxic shortcut nitrogen removal via partial nitrification and partial denitrification for municipal wastewater by adding sludge fermentation products continuously" . | CHEMOSPHERE 287 (2022) . |
| APA | Chen, Yao , Zhang, Ying , Zhang, Liang , Zhang, Shujun , Peng, Yongzhen . Applicability of two-stage anoxic/oxic shortcut nitrogen removal via partial nitrification and partial denitrification for municipal wastewater by adding sludge fermentation products continuously . | CHEMOSPHERE , 2022 , 287 . |
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摘要 ：
The slow initiation of anammox for treating typical domestic wastewater and the relatively high footprint of wastewater treatment infrastructures are major concerns for practical wastewater treatment systems. Herein, a 300 m(3)/d hybrid biofilm reactor (HBR) process was developed and operated with a short hydraulic retention time (HRT) of 8 h. The analysis of the bacterial community demonstrated that anammox were enriched in the anoxic zone of the HBR process. The percentage abundance of Candidatus Brocadia in the total bacterial community of the anoxic zone increased from 0 at Day 1 to 0.33% at Day 130 and then to 2.89% at Day 213. Based upon the activity of anammox bacteria, the removal of ammonia nitrogen (NH4+-N) in the anoxic zone was approximately 15%. This showed that the nitrogen transformation pathway was enhanced in the HBR system through partial anammox process in the anoxic zone. The final effluent contained 12 mg/L chemical oxygen demand (COD), 0.662 mg/L NH4+-N, 7.2 mg/L total nitrogen (TN), and 6 mg/L SS, indicating the effectiveness of the HBR process for treating real domestic wastewater.
关键词 ：
Anammox Anammox Biofilm Biofilm Candidatus Brocadia Candidatus Brocadia Domestic wastewater Domestic wastewater Full scale Full scale
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| GB/T 7714 | Hou, Feng , Zhang, Ting , Peng, Yongzhen et al. Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment [J]. | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2022 , 16 (3) . |
| MLA | Hou, Feng et al. "Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment" . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 16 . 3 (2022) . |
| APA | Hou, Feng , Zhang, Ting , Peng, Yongzhen , Cao, Xiaoxin , Pang, Hongtao , Shao, Yanqing et al. Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2022 , 16 (3) . |
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摘要 ：
The start-up, efficient, and secure operation of Anammox treating low ammonia sewage, is an important research focus. In this study, a partial nitrification-denitrification coupled with simultaneous Anammox and denitrifi-cation (PND-SAD) process was achieved in sequencing batch reactor/up-flow anaerobic sludge bed (SBR-UASB). The key measures to maintain high efficiency PND were: (i) controlling dissolved oxygen in the SBR below 0.5 mg/L, which is not only conducive to PN, but also promotes the contribution of simultaneous nitrification and denitrification to nitrogen removal; (ii) monitoring the nitrate (NO3--N) of SBR effluent and discharging sludge to wash out nitrate oxidation bacteria when the NO3--N exceeds 1.0 mg/L. The nitrite accumulation rate reached 97.6%. SBR effluent and domestic sewage entered the UASB. Although Candidatus Brocadia only accounted for 0.8%, its contribution to nitrogen removal reached 76.8%. In PND-SAD system, the aerobic HRT was only 3.8 h, nitrogen removal efficiency up to 97.3%.
关键词 ：
Anammox Anammox Deep denitrification Deep denitrification Domestic sewage Domestic sewage Partialnitrification-denitrification (PND) Partialnitrification-denitrification (PND)
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| GB/T 7714 | Zhao, Yueru , Zhang, Qiong , Peng, Yi et al. Advanced nitrogen elimination from domestic sewage through two stage partial nitrification and denitrification (PND) coupled with simultaneous anaerobic ammonia oxidation and denitrification (SAD) [J]. | BIORESOURCE TECHNOLOGY , 2022 , 343 . |
| MLA | Zhao, Yueru et al. "Advanced nitrogen elimination from domestic sewage through two stage partial nitrification and denitrification (PND) coupled with simultaneous anaerobic ammonia oxidation and denitrification (SAD)" . | BIORESOURCE TECHNOLOGY 343 (2022) . |
| APA | Zhao, Yueru , Zhang, Qiong , Peng, Yi , Peng, Yongzhen , Li, Xiyao , Jiang, Hao . Advanced nitrogen elimination from domestic sewage through two stage partial nitrification and denitrification (PND) coupled with simultaneous anaerobic ammonia oxidation and denitrification (SAD) . | BIORESOURCE TECHNOLOGY , 2022 , 343 . |
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摘要 ：
It is a challenging subject to realize nitrogen and phosphorus elimination synchronously from limited-carbon sewage through conventional biological processes. Herein, a novel continuous flow anaerobic/oxic/anoxic/ oxic (AOA-O) process, which integrated denitrifying dephosphatation, endogenous denitrification and anammox in the anoxic zone, was developed to enhance nutrient elimination from low carbon/nitrogen sewage (3.4 in average). After the long-term operation (280 days), a satisfactory nutrient removal performance (effluent PO43-- P: 0.2 mg P/L, total inorganic nitrogen (TIN):8.9 mg N/L) was obtained. Mass balance indicated that anammox contributed to 26.1% TIN removal and denitrifying dephosphatation contributed to 25.6% phosphorus removal, respectively. The cooperation of anammox bacteria retained in biofilms and endogenous denitrifying bacteria in flocculent sludge was responsible for the enhanced nutrient removal in the anoxic zone. Dechloromonas carried out phosphorus uptake both under oxic conditions and anoxic conditions. This study can broaden the application prospect of mainstream anammox.
关键词 ：
Mainstream anammox Mainstream anammox Denitrifying dephosphatation Denitrifying dephosphatation Endogenous denitrification Endogenous denitrification Continuous flow Continuous flow
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| GB/T 7714 | Feng, Yan , Luo, Shaoping , Zhang, Yingxin et al. Enhanced nutrient removal from mainstream sewage via denitrifying dephosphatation, endogenous denitrification and anammox in a novel continuous flow process [J]. | BIORESOURCE TECHNOLOGY , 2022 , 351 . |
| MLA | Feng, Yan et al. "Enhanced nutrient removal from mainstream sewage via denitrifying dephosphatation, endogenous denitrification and anammox in a novel continuous flow process" . | BIORESOURCE TECHNOLOGY 351 (2022) . |
| APA | Feng, Yan , Luo, Shaoping , Zhang, Yingxin , Wang, Shuying , Peng, Yongzhen . Enhanced nutrient removal from mainstream sewage via denitrifying dephosphatation, endogenous denitrification and anammox in a novel continuous flow process . | BIORESOURCE TECHNOLOGY , 2022 , 351 . |
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摘要 ：
Phosphorus-accumulating organisms (PAOs), which harbor metabolic mechanisms for phosphorus removal, are widely applied in wastewater treatment. Recently, novel PAOs and phosphorus removal metabolic pathways have been identified and studied. Specifically, Dechloromonas and Tetrasphaera can remove phosphorus via the denitrifying phosphorus removal and fermentation phosphorus removal pathways, respectively. As the main PAOs in biological phosphorus removal systems, the conventional PAO Candidatus Accumulibacter and the novel PAOs Dechloromonas and Tetrasphaera are thoroughly discussed in this paper, with a specific focus on their phosphorus removal metabolic mechanisms, process applications, community abundance and influencing fac-tors. Dechloromonas can achieve simultaneous nitrogen and phosphorus removal in an anoxic environment through the denitrifying phosphorus removal metabolic pathway, which can further reduce carbon source re-quirements and aeration energy consumption. The metabolic pathways of Tetrasphaera are diverse, with phos-phorus removal occurring in conjunction with macromolecular organics degradation through anaerobic fermentation. A collaborative oxic phosphorus removal pathway between Tetrasphaera and Ca. Accumulibacter, or a collaborative anoxic denitrifying phosphorus removal pathway between Tetrasphaera and Dechloromonas are
关键词 ：
Tetrasphaera Tetrasphaera Phosphorus -accumulating organisms Phosphorus -accumulating organisms Candidatus accumulibacter Candidatus accumulibacter Dechloromonas Dechloromonas Collaborative phosphorus removal Collaborative phosphorus removal
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| GB/T 7714 | Zhao, Weihua , Bi, Xuejun , Peng, Yongzhen et al. Research advances of the phosphorus-accumulating organisms of Candidatus Accumulibacter, Dechloromonas and Tetrasphaera: Metabolic mechanisms, applications and influencing factors [J]. | CHEMOSPHERE , 2022 , 307 . |
| MLA | Zhao, Weihua et al. "Research advances of the phosphorus-accumulating organisms of Candidatus Accumulibacter, Dechloromonas and Tetrasphaera: Metabolic mechanisms, applications and influencing factors" . | CHEMOSPHERE 307 (2022) . |
| APA | Zhao, Weihua , Bi, Xuejun , Peng, Yongzhen , Bai, Meng . Research advances of the phosphorus-accumulating organisms of Candidatus Accumulibacter, Dechloromonas and Tetrasphaera: Metabolic mechanisms, applications and influencing factors . | CHEMOSPHERE , 2022 , 307 . |
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摘要 ：
The efficient removal of nitrogen and phosphorus remains challenging for traditional wastewater treatment. In this study, the feasibility for enhancing the partial-denitrification and anammox process by Fe (III) reduction coupled to anammox and nitrate-dependent Fe (II) oxidation was explored using municipal wastewater. The nitrogen removal efficiency increased from 75.5 % to 83.0 % by adding Fe (III). Batch tests showed that NH4+-N was first oxidized to N-2 or NO2--N by Fe (III), then NO3--N was reduced to NO2--N and N(2 )by Fe (II), and finally, NO2--N was utilized by anammox. Furthermore, the performance of phosphorus removal improved by Fe addition and the removal efficiency increased to 78.7 %. High-throughput sequencing showed that the Fe-reducing bacteria Pseudomonas and Thiobacillus were successfully enriched. The abundance of anammox bacterial increased from 0.03 % to 0.22 % by multiple nitrite supply pathways. Fe addition presents a promising pathway for application in the anammox process.
关键词 ：
NDFO NDFO Biological nitrogen removal Biological nitrogen removal Feammox Feammox Flocculation Flocculation Microbial analysis Microbial analysis
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| GB/T 7714 | Kao, Chengkun , Zhang, Qiong , Li, Jianwei et al. Simultaneous nitrogen and phosphorus removal from municipal wastewater by Fe(III)/Fe(II) cycling mediated partial-denitrification/anammox [J]. | BIORESOURCE TECHNOLOGY , 2022 , 363 . |
| MLA | Kao, Chengkun et al. "Simultaneous nitrogen and phosphorus removal from municipal wastewater by Fe(III)/Fe(II) cycling mediated partial-denitrification/anammox" . | BIORESOURCE TECHNOLOGY 363 (2022) . |
| APA | Kao, Chengkun , Zhang, Qiong , Li, Jianwei , Gao, Ruitao , Li, Wenyu , Li, Xiyao et al. Simultaneous nitrogen and phosphorus removal from municipal wastewater by Fe(III)/Fe(II) cycling mediated partial-denitrification/anammox . | BIORESOURCE TECHNOLOGY , 2022 , 363 . |
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摘要 ：
A continuous plug-flow multistage anoxic/oxic (A/O) system based on one-stage partial nitrification coupled anammox (PNA) process with integrated fixed-film activated sludge (IFAS) was established and operated over 400 days. A step feed strategy effectively controlled free ammonia concentration and alleviated impacts on ammonia oxidizing bacteria (AOB) and anammox bacteria (AnAOB). During day 301-405, 98.1% of total inorganic nitrogen was removed from mature landfill leachate, whereas chemical oxygen demand (COD) removal efficiency was 52.9%. With the enrichment of AnAOB in oxic biofilm, nitrogen removal via the anammox pathway reached 94.3%-95.0%. During system operation, the dominant anammox genus shifted from Candidatus_Brocadia to Candidatus_Kuenenia. Fluorescent in situ hybridization (FISH) indicated AnAOB encapsulated by AOB colonies were mainly distributed inside of the biofilm, which promoted nitrite utilization by the anammox process. This innovative system and the results are of great value to practical applications.
关键词 ：
Partial nitrification coupled anammox (PNA) Partial nitrification coupled anammox (PNA) Landfill leachate Landfill leachate Integrated fixed-film activated sludge (IFAS) Integrated fixed-film activated sludge (IFAS) Step feed Step feed Continuous plug-flow system Continuous plug-flow system
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| GB/T 7714 | Ren, Shang , Wang, Zhong , Jiang, Hao et al. Efficient nitrogen removal from mature landfill leachate in a step feed continuous plug-flow system based on one-stage anammox process [J]. | BIORESOURCE TECHNOLOGY , 2022 , 347 . |
| MLA | Ren, Shang et al. "Efficient nitrogen removal from mature landfill leachate in a step feed continuous plug-flow system based on one-stage anammox process" . | BIORESOURCE TECHNOLOGY 347 (2022) . |
| APA | Ren, Shang , Wang, Zhong , Jiang, Hao , Li, Xiyao , Zhang, Qiong , Peng, Yongzhen . Efficient nitrogen removal from mature landfill leachate in a step feed continuous plug-flow system based on one-stage anammox process . | BIORESOURCE TECHNOLOGY , 2022 , 347 . |
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