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Production of N

Youkui GONG,Yongzhen PENG,Shuying WANG,Sai WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 589-597 doi: 10.1007/s11783-013-0571-7

Abstract: The N O production in two nitrogen removal processes treating domestic wastewater was investigated inDuring the aerobic phase, the nitrogen conversion to N O gas was 27.7% and 36.8% of loss for conventionalbiologic N-removal process and short-cut biologic N-removal process.Higher nitrite accumulation resulted in higher N O emission in the short-cut nitrogen removal processPulse-wise addition of 20 mg gave rise to 3-fold of N O emission in the conventional N-removal process

Keywords： conventional N-removal process     N2O     short-cut N-removal process     nitrite accumulation     ammonia    

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Characteristics and removal mechanism of the precursors of N-chloro-2,2-dichloroacetamide in a drinkingwater treatment process at Taihu Lake

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1338-6

Abstract:

• N-Cl-DCAM, an emerging N-DBP in drinking water was investigated.

Keywords： N-chloro-2     2-dichloroacetamide     Liquid chromatography with tandem mass spectrometry     Precursors     Removal    

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Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 519-530 doi: 10.1007/s11783-013-0610-4

Abstract: Six wastewater treatment plants (WWTPs) were investigated to evaluate the occurrence and removal ofChemically enhanced primary process (CEPP) had no effect on removal of either NDMA or NDMA FP.DMA was well removed in all the six surveyed WWTPs; its removal efficiency was greater than 97%.had better removal efficiency than conventional activated sludge process.The best removal efficiencies for TMA, DMFA and DMAB were 95%, 68% and 72%, respectively.

Keywords： N-nitrosodimethylamine     NDMA precursors     NDMA formation potential     biological treatment process     chemicallyenhanced primary process    

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Techno-economic characteristics of wastewater treatment plants retrofitted from the conventional activatedsludge process to the membrane bioreactor process

Frontiers of Environmental Science & Engineering doi: 10.1007/s11783-021-1483-6

Abstract: itemcontent>

While a growing number of wastewater treatment plants (WWTPs) are being retrofitted from the conventionalactivated sludge (CAS) process to the membrane bioreactor (MBR) process, the debate on the techno-economy

Keywords： Membrane bioreactor (MBR)     Conventional activated sludge (CAS)     Cost-benefit analysis     Data envelopment    

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Comparative experiment on treating digested piggery wastewater with a biofilm MBR and conventional MBR: simultaneous removal of nitrogen and antibiotics

Xiaoyan Song,Rui Liu,Lujun Chen,Tomoki Kawagishi

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0919-5

Abstract: The removal of antibiotics was influenced significantly by HRT.Membrane filtration greatly contributed to antibiotics removal.A biofilm membrane bioreactor (BF-MBR) and a conventional membrane bioreactor (MBR) were parallelly operatedThe removal performance of COD, TN, NH -N, TP as well as antibiotics were simultaneously studied whenThe averaged removal rates of COD, NH -N, TN and TP were 92.1%, 97.1%, 35.6% and 54.2%, respectively,

Keywords： Alkalinity     Antibiotics     Biofilm     Digested piggery wastewater (DPW)     Membrane bioreactor    

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1358-2

Abstract:

• Microbes enhance denitrification under varying DO concentrations and SIF dosages.

Keywords： Scrap iron filing     Nitrate removal     Phosphate removal     Mixed culture denitrification     Zero valent iron    

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Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1522-y

Abstract:

• Simultaneous C & N removal in Methammox occurs at wide C:N ratio.

Keywords： Methanogens     Biological Nitrogen Removal (BNR)     Simultaneous     Methammox     C:N ratio    

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Advantages of intermittently aerated SBR over conventional SBR on nitrogen removal for the treatment

Xiaoyan Song, Rui Liu, Lujun Chen, Baogang Dong, Tomoki Kawagishi

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0941-7

Abstract: reactor (SBR) were parallelly constructed to treat digested piggery wastewater, which was in high NH -NTheir pollutant removal performance was compared under COD/TN ratios of 1.6–3.4 d and hydraulic retentionThe results showed that the IASBR removed TN, NH -N and TOC more efficiently than the SBR.The average removal rates of TN, NH -N and TOC were 83.1%, 96.5%, and 89.0%, respectively, in the IASBRA pre-anoxic process in the IASBR would enhance the ammonium oxidation while restrict the nitrite oxidation

Keywords： Anoxic stress     Carbon source     Digested piggery wastewater     Intermittently aerated SBR (IASBR)     Total nitrogen    

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N2O emission from a sequencing batch reactor for biological N and P removal from wastewater

Lei SHEN,Yuntao GUAN,Guangxue WU,Xinmin ZHAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 776-783 doi: 10.1007/s11783-013-0586-0

Abstract: Nitrous oxide (N O) is a greenhouse gas that can be released during biological nitrogen removal fromN O emission from a sequencing batch reactor (SBR) for biological nitrogen and phosphorus removal fromwastewater was investigated, and the aims were to examine which process, nitrification or denitrification, would contribute more to N O emission and to study the effects of heterotrophic activities on N O emissionThe ratio of N O emission to the removed ammonium nitrogen (N O-N/NH -N) was 2.5% in the SBR system with

Keywords： biological nutrient removal     denitrification     greenhouse gas     nitrification     nitrous oxide    

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Taxonomic and functional variations in the microbial community during the upgrade process of a full-scalelandfill leachate treatment plant – from conventional to partial nitrification-denitrification

Binbin Sheng, Depeng Wang, Xianrong Liu, Guangxing Yang, Wu Zeng, Yiqing Yang, Fangang Meng

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1272-7

Abstract: Abstract • Upgrade process was investigated in a full-scale landfill leachate treatment plant. • Theoptimization of DO can technically achieve the shift from CND to PND process. • Nitrosomonas was mainly. • Enhanced metabolic potentials on organics was found during the process update.In this study, the process upgrade from conventional to partial nitrification-denitrification was comprehensivelyMoreover, the upgrading process facilitated the enrichment of Nitrosomonas (abundance increased from

Keywords： Landfill leachate     Process upgrade     Partial nitrification-denitrification     Bacterial community     Metagenomics    

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Performance of completely autotrophic nitrogen removal over nitrite process under different aeration

GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 439-445 doi: 10.1007/s11783-008-0046-4

Abstract: reactors (SBBRs) were operated for 155 days to evaluate the performance of completely autotrophic nitrogen removalover nitrite (CANON) process under different aeration modes and dissolved oxygen (DO).Synthetic wastewater with 160-mg NH-N/L was fed into the reactors.However, to achieve the same nitrogen removal efficiency, the DO needed in the intermittently-aeratedthe CANON system should be adjusted to the aeration mode, and low DO was not a prerequisite to CANON process

Keywords： Synthetic wastewater     process     Whereas     biofilm     detection    

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Occurrence of bisphenol A in surface and drinking waters and its physicochemical removal technologies

Liping LIANG,Jing ZHANG,Pian FENG,Cong LI,Yuying HUANG,Bingzhi DONG,Lina LI,Xiaohong GUAN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 16-38 doi: 10.1007/s11783-014-0697-2

Abstract: Each removal option has its own limitation and merits in removing BPA.However, the necessary regeneration of activated carbon and the low BPA removal efficiency when the membranebecame saturated may limit the application of activated carbon adsorption and membrane processes for BPA removalHybrid processes, e.g. combining adsorption and biologic process or combining membrane and oxidationprocess, which can achieve simultaneous physical separation and degradation of BPA, will be highly preferred

Keywords： Bisphenol A (BPA)     occurrence     conventional oxidation     advanced oxidation     adsorption     membrane filtration    

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Nitrate removal to its fate in wetland mesocosm filled with sponge iron: Impact of influent COD/N ratio

Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1183-7

Abstract: CW-Fe allowed a high-performance of NO3‒-N removal at the COD/N ratio of 0.The application of s-Fe0 contributed to TIN removal in wetland mesocosm. s-Fe0 changed the main denitrifiers/N ratios (0, 5, and 10).Results showed that the NO3‒-N removal efficiencies were significantly increased by 6.6 to 58.9% in theof 0 and 5, the TIN removal efficiencies increased by 4.5%‒12.4%.

Keywords： Sponge iron     Wetland mesocosm     Electronic donor     Denitrification     COD/N ratio    

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Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1047-6

Abstract:

MABR exhibits excellent TN removal performance for treating ROC withlow C/N ratio.

Operating conditions should be properly controlled to achieve optimal TN removal

The TN removal rate remains over 70% when the

Keywords： Membrane-aerated biofilm reactor (MABR)     Salinity     Total nitrogen     Reverse osmosis concentrate    

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Reutilize tire in microbial fuel cell for enhancing the nitrogen removal of the anammox process coupled

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1409-3

Abstract:

• MFC promoted the nitrogen removal of anammox with Fe-C micro-electrolysis

Keywords： Waste tire     MFCs     Micro-electrolysis     Anammox     Feammox    

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Title Author Date Type Operation

Production of N

Youkui GONG,Yongzhen PENG,Shuying WANG,Sai WANG

Journal Article

Characteristics and removal mechanism of the precursors of N-chloro-2,2-dichloroacetamide in a drinkingwater treatment process at Taihu Lake

Journal Article

Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Journal Article

Techno-economic characteristics of wastewater treatment plants retrofitted from the conventional activatedsludge process to the membrane bioreactor process

Journal Article

Comparative experiment on treating digested piggery wastewater with a biofilm MBR and conventional MBR: simultaneous removal of nitrogen and antibiotics

Xiaoyan Song,Rui Liu,Lujun Chen,Tomoki Kawagishi

Journal Article

Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

Journal Article

Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

Journal Article

Advantages of intermittently aerated SBR over conventional SBR on nitrogen removal for the treatment

Xiaoyan Song, Rui Liu, Lujun Chen, Baogang Dong, Tomoki Kawagishi

Journal Article

N2O emission from a sequencing batch reactor for biological N and P removal from wastewater

Lei SHEN,Yuntao GUAN,Guangxue WU,Xinmin ZHAN

Journal Article

Taxonomic and functional variations in the microbial community during the upgrade process of a full-scalelandfill leachate treatment plant – from conventional to partial nitrification-denitrification

Binbin Sheng, Depeng Wang, Xianrong Liu, Guangxing Yang, Wu Zeng, Yiqing Yang, Fangang Meng

Journal Article

Performance of completely autotrophic nitrogen removal over nitrite process under different aeration

GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu

Journal Article

Occurrence of bisphenol A in surface and drinking waters and its physicochemical removal technologies

Liping LIANG,Jing ZHANG,Pian FENG,Cong LI,Yuying HUANG,Bingzhi DONG,Lina LI,Xiaohong GUAN

Journal Article

Nitrate removal to its fate in wetland mesocosm filled with sponge iron: Impact of influent COD/N ratio

Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn

Journal Article

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Journal Article

Reutilize tire in microbial fuel cell for enhancing the nitrogen removal of the anammox process coupled

Journal Article