• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索
高影响力成果及被引频次趋势图 关键词云图及合作者关系图

您的检索:

学者姓名:彭永臻

精炼检索结果:

来源

应用 展开

合作者

应用 展开

清除所有精炼条件

排序方式:
默认
  • 默认
  • 标题
  • 年份
  • WOS被引数
  • 影响因子
  • 正序
  • 倒序
< 页,共 273 >
Synchronous Achievement of Advanced Nitrogen Removal and N2O Reduction in the Anoxic Zone in the AOA Process for Low C/N Municipal Wastewater SCIE
期刊论文 | 2024 , 58 (5) , 2335-2345 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
摘要&关键词 引用

摘要 :

Continuous flow processes for the in situ determination of N2O emissions during low C/N municipal wastewater treatment have rarely been reported. The anaerobic/aerobic/anoxic (AOA) process has recently shown promising potential in energy savings and advanced nitrogen removal, but it still needs to be comprehensively explored in relation to N2O emissions for its carbon reduction advantages. In this study, a novel gas-collecting continuous flow reactor was designed to comprehensively evaluate the emissions of N2O from the gas and liquid phases of the AOA process. Additionally, the measures of enhancing endogenous denitrification (ED) and self-enriching anaerobic ammonium oxidation (Anammox) were employed to optimize nitrogen removal and achieve N2O reduction in the anoxic zone. The results showed that enhanced ED coupled with Anammox led to an increase in the nitrogen removal efficiency (NRE) from 67.65 to 81.96%, an enhancement of the NO3- removal rate from 1.76 mgN/(L h) to 3.99 mgN/(L h), and the N2O emission factor in the anoxic zone decreased from 0.28 to 0.06%. Impressively, ED eliminated 91.46 +/- 2.47% of the dissolved N2O from the upstream aerobic zone, and the dissolved N2O in the effluent was reduced to less than 0.01 mg/L. This study provides valuable strategies for fully evaluating N2O emissions and N2O reduction from the AOA process.

关键词 :

advanced nitrogen removal advanced nitrogen removal anaerobic/aerobic/anoxic anaerobic/aerobic/anoxic municipalwastewater municipalwastewater anammox anammox endogenous denitrification endogenous denitrification N2O emissions N2O emissions

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 An, Zeming , Gao, Xinjie , Shao, Baishuo et al. Synchronous Achievement of Advanced Nitrogen Removal and N2O Reduction in the Anoxic Zone in the AOA Process for Low C/N Municipal Wastewater [J]. | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2024 , 58 (5) : 2335-2345 .
MLA An, Zeming et al. "Synchronous Achievement of Advanced Nitrogen Removal and N2O Reduction in the Anoxic Zone in the AOA Process for Low C/N Municipal Wastewater" . | ENVIRONMENTAL SCIENCE & TECHNOLOGY 58 . 5 (2024) : 2335-2345 .
APA An, Zeming , Gao, Xinjie , Shao, Baishuo , Zhang, Qiong , Ding, Jing , Peng, Yongzhen . Synchronous Achievement of Advanced Nitrogen Removal and N2O Reduction in the Anoxic Zone in the AOA Process for Low C/N Municipal Wastewater . | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2024 , 58 (5) , 2335-2345 .
导入链接 NoteExpress RIS BibTex
Partial nitrification response to dissolved oxygen variation and aerobic starvation: Kinetics and microbial community analyses SCIE
期刊论文 | 2024 , 481 | CHEMICAL ENGINEERING JOURNAL
摘要&关键词 引用

摘要 :

Partial nitrification (PN) has great significance in promoting both anaerobic ammonium oxidation (anammox) and advanced nitrogen removal. However, the kinetics of PN have not been sufficiently studied. Deterioration of PN often occurs due to nitrite-oxidizing bacteria (NOB) outgrowth, for which the dissolved oxygen (DO) is a critical factor. This study investigated the kinetic parameters of ammonia-oxidizing bacteria (AOB) and NOB by varying the DO concentration. The partial nitrification-anammox (PNA) process was operated under sequentially low (0.3-0.8 mg/L) and high (4.0-5.0 mg/L) DO. The results show that AOB could not adapt to low DO, resulting in a significant decrease in the maximum AOB activity (Vmax,AOB) and a slightly altered oxygen half-saturation constant of AOB (KO,AOB). Conversely, KO,NOB decreased and Vmax,NOB maintained, indicating that the main NOB genus, Nitrospira, was more adaptable to DO changes. Under high DO, AOB growth was weaker than NOB, leading to a low Vmax,AOB - Vmax,NOB value; KO,AOB increased and was larger than KO,NOB and PNA was eventually destroyed. The aerobic starvation was then adopted to restore PN. AOB recovered faster and dominated, with Vmax,AOB greatly exceeding Vmax,NOB. Finally, NOB were inhibited and PN was recovered. During this process, KO, NOB increased and was higher than KO,AOB. Changes in the kinetic parameters, especially the Vmax,AOB -Vmax,NOB value, have specific guiding significance for DO regulation during PNA. This work helps better understand the effect of DO variations on the nitrifying microbial community, which influences oxygen affinity and maximum activity.

关键词 :

Dissolved oxygen Dissolved oxygen Oxygen affinity Oxygen affinity Partial nitrification Partial nitrification Nitrifying microbial community Nitrifying microbial community Maximum nitrification activity Maximum nitrification activity

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Duan, Chenxue , Zhang, Qiong , Li, Jialin et al. Partial nitrification response to dissolved oxygen variation and aerobic starvation: Kinetics and microbial community analyses [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 481 .
MLA Duan, Chenxue et al. "Partial nitrification response to dissolved oxygen variation and aerobic starvation: Kinetics and microbial community analyses" . | CHEMICAL ENGINEERING JOURNAL 481 (2024) .
APA Duan, Chenxue , Zhang, Qiong , Li, Jialin , Feng, Wanyi , Zhang, Liang , Peng, Yongzhen . Partial nitrification response to dissolved oxygen variation and aerobic starvation: Kinetics and microbial community analyses . | CHEMICAL ENGINEERING JOURNAL , 2024 , 481 .
导入链接 NoteExpress RIS BibTex
An overlooked effect of hydroxylamine on anammox granular sludge: Promoting granulation and boosting activity SCIE
期刊论文 | 2024 , 921 | SCIENCE OF THE TOTAL ENVIRONMENT
摘要&关键词 引用

摘要 :

The exogenous hydroxylamine dosing has been proven to enhance nitrite supply for anammox bacteria. In this study, exogenous hydroxylamine was fed into a sequencing batch reactor to investigate its long-term effect on anammox granular sludge. The results showed that hydroxylamine enhanced the reactor's performance with an increase in total nitrogen removal rate from 0.23 to 0.52 kg N/m3/d and an increase in bacterial activity from 11.65 to 78.24 mg N/g VSS/h. Meanwhile, hydroxylamine promoted granulation by eluting flocs. And higher anammox activity and granulation were supported by extracellular polymeric substances (EPS) characteristics. Moreover, Candidatus Brocadia's abundance increased from 1.10 % to 3.03 %, and its symbiosis with heterotrophic bacteria was intensified. Additionally, molecular docking detailed the mechanism of the hydroxylamine effect. Overall, this study would provide new insights into the hydroxylamine dosing strategy application.

关键词 :

Granulation Granulation Bacterial activity Bacterial activity Anammox Anammox Hydroxylamine Hydroxylamine

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Su, Xinwei , Li, Jianwei , Peng, Yi et al. An overlooked effect of hydroxylamine on anammox granular sludge: Promoting granulation and boosting activity [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 921 .
MLA Su, Xinwei et al. "An overlooked effect of hydroxylamine on anammox granular sludge: Promoting granulation and boosting activity" . | SCIENCE OF THE TOTAL ENVIRONMENT 921 (2024) .
APA Su, Xinwei , Li, Jianwei , Peng, Yi , Yuan, Yue , Wu, Lei , Peng, Yongzhen . An overlooked effect of hydroxylamine on anammox granular sludge: Promoting granulation and boosting activity . | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 921 .
导入链接 NoteExpress RIS BibTex
Novel control strategy employing anaerobic/aerobic/anoxic/aerobic/ anoxic mode to enhance endogenous denitrification and anammox for municipal wastewater treatment SCIE
期刊论文 | 2024 , 414 | BIORESOURCE TECHNOLOGY
摘要&关键词 引用

摘要 :

Anaerobic/Aerobic/Anoxic (AnOA) n OA) process utilizes endogenous denitrification to remove nitrogen. However, low endogenous denitrification activity critically restricts its application owing to insufficient carbon sources. In this study, a novel control strategy employing anaerobic/aerobic/anoxic/aerobic/anoxic (AOAOA) mode was introduced to treat low Carbon/Nitrogen (C/N) ratio municipal wastewater over 262 days. The concentration of total inorganic nitrogen (TIN) was only 3.9 +/- 2.0 mg/L in the effluent, with a high nitrogen removal efficiency (NRE) of 94.3 %. The relative abundance of Candidatus Competibacter increased from 1.2 % to 2.3 %, ensuring an efficient endogenous denitrification process. Additionally, Candidatus Brocadia enriched from 0.02 % to 0.6 %, contributing to 63.1 % nitrogen removal during the anoxic stage in Phase III. This study presents a promising approach for enhancing endogenous denitrification and anammox in the AnOA n OA process, contributing to sustainable wastewater treatment.

关键词 :

Efficient wastewater treatment Efficient wastewater treatment Low C/N ratio Low C/N ratio AOAOA mode AOAOA mode Mainstream Mainstream EPDA system EPDA system

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Shi, Xialian , Liu, Jinjin , Wu, You et al. Novel control strategy employing anaerobic/aerobic/anoxic/aerobic/ anoxic mode to enhance endogenous denitrification and anammox for municipal wastewater treatment [J]. | BIORESOURCE TECHNOLOGY , 2024 , 414 .
MLA Shi, Xialian et al. "Novel control strategy employing anaerobic/aerobic/anoxic/aerobic/ anoxic mode to enhance endogenous denitrification and anammox for municipal wastewater treatment" . | BIORESOURCE TECHNOLOGY 414 (2024) .
APA Shi, Xialian , Liu, Jinjin , Wu, You , Wu, Ke , Peng, Yongzhen . Novel control strategy employing anaerobic/aerobic/anoxic/aerobic/ anoxic mode to enhance endogenous denitrification and anammox for municipal wastewater treatment . | BIORESOURCE TECHNOLOGY , 2024 , 414 .
导入链接 NoteExpress RIS BibTex
Brain-inspired multimodal approach for effluent quality prediction using wastewater surface images and water quality data SCIE
期刊论文 | 2024 , 18 (3) | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
摘要&关键词 引用

摘要 :

Efficiently predicting effluent quality through data-driven analysis presents a significant advancement for consistent wastewater treatment operations. In this study, we aimed to develop an integrated method for predicting effluent COD and NH3 levels. We employed a 200 L pilot-scale sequencing batch reactor (SBR) to gather multimodal data from urban sewage over 40 d. Then we collected data on critical parameters like COD, DO, pH, NH3, EC, ORP, SS, and water temperature, alongside wastewater surface images, resulting in a data set of approximately 40246 points. Then we proposed a brain-inspired image and temporal fusion model integrated with a CNN-LSTM network (BITF-CL) using this data. This innovative model synergized sewage imagery with water quality data, enhancing prediction accuracy. As a result, the BITF-CL model reduced prediction error by over 23% compared to traditional methods and still performed comparably to conventional techniques even without using DO and SS sensor data. Consequently, this research presents a cost-effective and precise prediction system for sewage treatment, demonstrating the potential of brain-inspired models.

关键词 :

Wastewater treatment system Wastewater treatment system Multimodal data Multimodal data Attention mechanism Attention mechanism Data driven analysis Data driven analysis Brain-inspired model Brain-inspired model Water quality prediction Water quality prediction

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Li, Junchen , Lin, Sijie , Zhang, Liang et al. Brain-inspired multimodal approach for effluent quality prediction using wastewater surface images and water quality data [J]. | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2024 , 18 (3) .
MLA Li, Junchen et al. "Brain-inspired multimodal approach for effluent quality prediction using wastewater surface images and water quality data" . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 18 . 3 (2024) .
APA Li, Junchen , Lin, Sijie , Zhang, Liang , Liu, Yuheng , Peng, Yongzhen , Hu, Qing . Brain-inspired multimodal approach for effluent quality prediction using wastewater surface images and water quality data . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2024 , 18 (3) .
导入链接 NoteExpress RIS BibTex
Unlocking partial nitrification by acidophilic microorganisms in ultra-low strength wastewater: Long-term investigation and genomic insights SCIE
期刊论文 | 2024 , 496 | CHEMICAL ENGINEERING JOURNAL
摘要&关键词 引用

摘要 :

Achieving partial nitrification (PN) in low-strength wastewater is still a worldwide issue. In this study, conversion from nitrification to PN was successfully achieved with a self-sustained pH as low as 5.3 and a nitrite accumulation ratio (NAR) of 93.4 % by enriching novel acidic-tolerant functional flora. A strong positive correlation was observed between decreasing pH and NAR (R-2 = 0.97). Even with 73.1 % reduction in influent ammonia (from 86.7 to 23.3 mg/L), high dissolved oxygen loading (4.5-5.3 mg/L), and extreme over-aeration, PN efficacy remained robust with the NAR consistently maintained at 90.6 +/- 5.3 %. Over 180 days of continuous monitoring, novel ammonia-oxidizing bacteria (AOB) Candidatus Nitrosoglobus became the dominant nitrifying guild (1.65 %) with a specific growth rate of 0.091/day; however, traditional nitrifying bacteria exhibited impaired functionality and bacterial diversity was dramatically reduced. Amo abundance increased by 147 %, while Nxr in nitrifying bacteria dropped below detection limit, preventing complete nitrification. Upregulated electron transport chain genes enhanced electron flow, managing excess oxygen and effectively limiting harmful oxygen radical production, resulting in a desirable nitritation rate of 0.3 kg/m(3)d with influent NH4+-N as low as 23.3 mg/L. These regulatory mechanisms boosted NH4+ oxidation efficiency, successfully unlocking scientific barriers associated with PN in ultralow-strength wastewater and laying the groundwork for future PN/A implementation.

关键词 :

pH < 6 pH < 6 Acidophilic partial nitrification Acidophilic partial nitrification Ultralow-strength wastewater Ultralow-strength wastewater Candidatus Nitrosoglobus Candidatus Nitrosoglobus Upregulated electron transport Upregulated electron transport

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Zhang, Fangzhai , Du, Ziyi , Wang, Jiahui et al. Unlocking partial nitrification by acidophilic microorganisms in ultra-low strength wastewater: Long-term investigation and genomic insights [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 496 .
MLA Zhang, Fangzhai et al. "Unlocking partial nitrification by acidophilic microorganisms in ultra-low strength wastewater: Long-term investigation and genomic insights" . | CHEMICAL ENGINEERING JOURNAL 496 (2024) .
APA Zhang, Fangzhai , Du, Ziyi , Wang, Jiahui , Peng, Yongzhen . Unlocking partial nitrification by acidophilic microorganisms in ultra-low strength wastewater: Long-term investigation and genomic insights . | CHEMICAL ENGINEERING JOURNAL , 2024 , 496 .
导入链接 NoteExpress RIS BibTex
Predicting aeration time and nitrite accumulation rate variations for Partial Nitritation: A model incorporating nitrogen oxidation rate dynamics SCIE
期刊论文 | 2024 , 268 | WATER RESEARCH
摘要&关键词 引用

摘要 :

This study aimed to develop a two-step nitrification model to predict variations in aeration time and nitrite accumulation rate (NAR) under fluctuating operational conditions in mainstream partial nitritation (PN) processes. Lab-scale sequencing batch reactors (SBRs) were used to evaluate the ammonia oxidation rate (AOR) and nitrite oxidation rate (NOR) under different solids retention times (SRT) (10, 15, 20, 30, and 50 days) and total volumetric nitrogen loadings (TVNL) (20-60 mg N/L per cycle). A static model was developed to predict consistent AOR and NOR values in the steady state, whereas a dynamic model was established to capture the growth dynamics of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) under unsteady- state conditions. The static model accurately predicted the AOR, NOR, and aeration time at steady state. The dynamic model quantified the relationship between specific growth rates (mu) and food-to-microorganism ratios (F/M) through exponential fitting, successfully capturing AOB and NOB growth dynamics. Validation experiments (SRT = 10 d, TVNL = 60 mg/L per cycle) demonstrated the ability of the dynamic model to predict trends in NAR and aeration time accurately. This study emphasizes the importance of accurately modeling AOR and NOR variations to predict aeration time and NAR, thereby providing valuable insights for aeration control and precise management of AOB and NOB populations in mainstream PN processes.

关键词 :

Nitrogen loading Nitrogen loading F/M F/M Partial Nitritation Partial Nitritation Kinetic analysis Kinetic analysis Solids retention time Solids retention time

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Zhou, Wentao , Zhang, Qiong , Wang, Bo et al. Predicting aeration time and nitrite accumulation rate variations for Partial Nitritation: A model incorporating nitrogen oxidation rate dynamics [J]. | WATER RESEARCH , 2024 , 268 .
MLA Zhou, Wentao et al. "Predicting aeration time and nitrite accumulation rate variations for Partial Nitritation: A model incorporating nitrogen oxidation rate dynamics" . | WATER RESEARCH 268 (2024) .
APA Zhou, Wentao , Zhang, Qiong , Wang, Bo , Peng, Yi , Hou, Feng , Pang, Hongtao et al. Predicting aeration time and nitrite accumulation rate variations for Partial Nitritation: A model incorporating nitrogen oxidation rate dynamics . | WATER RESEARCH , 2024 , 268 .
导入链接 NoteExpress RIS BibTex
Acidophilic partial nitrification (pH<6) facilitates ultra-efficient short-flow nitrogen transformation: Experimental validation and genomic insights SCIE
期刊论文 | 2024 , 260 | WATER RESEARCH
摘要&关键词 引用

摘要 :

Partial nitrification (PN) represents an energy-efficient bioprocess; however, it often confronts challenges such as unstable nitrite accumulation, nitrite oxidizing bacteria shocks, and slow reaction rate. This study established an acidophilic PN with self-sustained pH as low as 5.36. Over 120-day monitoring, nitrite accumulation rate (NAR) was stabilized at more than 97.9 %, and an ultra-high ammonia oxidation rate of 0.81 kg/m(3)& sdot;d was achieved. Notably, least NAR of 77.8 % persisted even under accidental nitrite oxidizing bacteria invasion, aeration delay, alkalinity fluctuations, and cooling shocks. During processing, despite detrimental effects on bacterial diversity, there was a discernible increase in acid-tolerant bacteria responsible for nitrification. Candidatus Nitrosoglobus, gradually dominated in nitrifying guild (2.15 %), with the substantially reduction or disappearance of typical nitrifying microorganisms. Acidobacteriota, a key player in nitrogen cycling of soil, significantly increased from 0.45 % to 9.98 %, and its associated nitrogen metabolism genes showed a substantial 215 % rise. AmoB emerged as the most critical functional gene influencing acidophilic PN, exhibiting significantly higher unit gene expression than other nitrification genes. Blockade tricarboxylic acid cycle, DNA damage, and presence of free nitrous acid exert substantial effects on nitrite-oxidizing bacteria (NOB), serving as internal driving forces for acidophilic PN. This highlights the reliable potential for shortening nitrogen transformation process.

关键词 :

Ultra -fast reaction rate Ultra -fast reaction rate Candidatus nitrosoglobus Candidatus nitrosoglobus Acidophilic partial nitrification Acidophilic partial nitrification pH < 6 pH < 6 Acidobacteriota Acidobacteriota

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Zhang, Fangzhai , Du, Ziyi , Wang, Jiahui et al. Acidophilic partial nitrification (pH<6) facilitates ultra-efficient short-flow nitrogen transformation: Experimental validation and genomic insights [J]. | WATER RESEARCH , 2024 , 260 .
MLA Zhang, Fangzhai et al. "Acidophilic partial nitrification (pH<6) facilitates ultra-efficient short-flow nitrogen transformation: Experimental validation and genomic insights" . | WATER RESEARCH 260 (2024) .
APA Zhang, Fangzhai , Du, Ziyi , Wang, Jiahui , Du, Yujia , Peng, Yongzhen . Acidophilic partial nitrification (pH<6) facilitates ultra-efficient short-flow nitrogen transformation: Experimental validation and genomic insights . | WATER RESEARCH , 2024 , 260 .
导入链接 NoteExpress RIS BibTex
Insight into the shift in coupling mechanisms during one-stage partial-denitrification/anammox process for municipal wastewater treatment SCIE
期刊论文 | 2024 , 207 | RESOURCES CONSERVATION AND RECYCLING
摘要&关键词 引用

摘要 :

Partial-denitrification coupled with anammox (PD/A) process is regarded as an emerging technology to improve nitrogen removal efficiency during municipal wastewater treatment. In this work, the shift from low to high nitrite accumulation in one-stage anoxic biofilm reactor using PD/A process was studied. When dinirogen gas (N-2) was pumped into the bioreactor to remove CO2, effluent nitrite concentration sharply increased from 0.3 mg N/L on day 10 without N-2 to 14.6 mg N/L on day 21 with N-2, but the coupled anammox reaction almost stopped. Batch tests indicate that the metabolic process of PD/A underwent a notable shift, transitioning from initially low nitrite (<0.5 mg N/L) to high nitrite accumulation (13.5 mg N/L). Metagenomic sequencing demonstrated that Thauera was associated with the genes napA, napB and narG, supporting the improved nitrate-to-nitrite pathway. The shift in coupling mechanisms demonstrated that the one-stage PD/A process has significant practical potential.

关键词 :

One-stage pd/a process One-stage pd/a process Municipal wastewater Municipal wastewater Nitrite accumulation Nitrite accumulation Anoxic biofilm Anoxic biofilm Metagenomic sequencing Metagenomic sequencing

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Li, Jianwei , Liu, Qiyu , Peng, Yongzhen . Insight into the shift in coupling mechanisms during one-stage partial-denitrification/anammox process for municipal wastewater treatment [J]. | RESOURCES CONSERVATION AND RECYCLING , 2024 , 207 .
MLA Li, Jianwei et al. "Insight into the shift in coupling mechanisms during one-stage partial-denitrification/anammox process for municipal wastewater treatment" . | RESOURCES CONSERVATION AND RECYCLING 207 (2024) .
APA Li, Jianwei , Liu, Qiyu , Peng, Yongzhen . Insight into the shift in coupling mechanisms during one-stage partial-denitrification/anammox process for municipal wastewater treatment . | RESOURCES CONSERVATION AND RECYCLING , 2024 , 207 .
导入链接 NoteExpress RIS BibTex
Organics Recovery from Waste Activated Sludge In-Situ Driving Efficient Nitrogen Removal from Mature Landfill Leachate: An Innovative Biotechnology with Energy Superiority SCIE
期刊论文 | 2024 , 34 , 120-132 | ENGINEERING
摘要&关键词 引用

摘要 :

The sustainable recovery and utilization of sludge bioenergy within a circular economy context has drawn increasing attention, but there is currently a shortage of reliable technology. This study presents an innovative biotechnology based on free nitrous acid (FNA) to realize sustainable organics recovery from waste activated sludge (WAS) in -situ , driving efficient nitrogen removal from ammonia rich mature landfill leachate by integrating partial nitrification, fermentation, and denitrification process (PN/DN-F/DN). First, ammonia ((1708.5 +/- 142.9) mg center dot L -1 ) in mature landfill leachate is oxidized to nitrite in the aerobic stage of a partial nitrification coupling denitrification (PN/DN) sequencing batch reactor (SBR), with nitrite accumulation ratio of 95.4% +/- 2.5%. Then, intermediate effluent (NO 2 - -N = (1196.9 +/- 184.2) mg center dot L -1 ) of the PN/DN-SBR, along with concentrated WAS (volatile solids (VSs) = (15 119.8 +/- 2484.2) mg center dot L -1 ), is fed into an anoxic reactor for fermentation coupling denitrification process (F/DN). FNA, the protonated form of nitrite, degrades organics in the WAS to the soluble fraction by the biocidal effect, and the released organics are utilized by denitrifiers to drive NO x - reduction. An ultra -fast sludge reduction rate of 4.89 kg center dot m -3 center dot d -1 and nitrogen removal rate of 0.46 kg center dot m -3 center dot d -1 were realized in the process. Finally, F/DN-SBR effluent containing organics is refluxed to PN/DN-SBR for secondary denitrification in the post anoxic stage. After 175 d operation, an average of 19 350.6 mg chemical oxygen demand organics were recovered per operational cycle, with 95.2% nitrogen removal and 53.4% sludge reduction. PN/DN-F/DN is of great significance for promoting a paradigm transformation from energy consumption to energy neutral, specifically, the total benefit in equivalent terms of energy was 291.8 kW center dot h center dot t -1 total solid. (c) 2023 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering and Higher Education Press Limited Company. This is an open access article under the CC BY -NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

关键词 :

Free nitrous acid Free nitrous acid Bioresource recovery Bioresource recovery Waste activated sludge Waste activated sludge Mature landfill leachate Mature landfill leachate sludge sludge Simultaneous treatment of wastewater and Simultaneous treatment of wastewater and

引用:

复制并粘贴一种已设定好的引用格式,或利用其中一个链接导入到文献管理软件中。

GB/T 7714 Zhang, Fangzhai , Ren, Shang , Liang, Haoran et al. Organics Recovery from Waste Activated Sludge In-Situ Driving Efficient Nitrogen Removal from Mature Landfill Leachate: An Innovative Biotechnology with Energy Superiority [J]. | ENGINEERING , 2024 , 34 : 120-132 .
MLA Zhang, Fangzhai et al. "Organics Recovery from Waste Activated Sludge In-Situ Driving Efficient Nitrogen Removal from Mature Landfill Leachate: An Innovative Biotechnology with Energy Superiority" . | ENGINEERING 34 (2024) : 120-132 .
APA Zhang, Fangzhai , Ren, Shang , Liang, Haoran , Wang, Zhaozhi , Yan, Ying , Wang, Jiahui et al. Organics Recovery from Waste Activated Sludge In-Situ Driving Efficient Nitrogen Removal from Mature Landfill Leachate: An Innovative Biotechnology with Energy Superiority . | ENGINEERING , 2024 , 34 , 120-132 .
导入链接 NoteExpress RIS BibTex
每页显示 10| 20| 50 条结果
< 页,共 273 >

导出

数据:

选中

格式:
在线人数/总访问数:464/4922162
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司