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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 inbiologic N-removal process and short-cut biologic N-removal process.The dissolved N O was reduced to N in the anoxic denitrification phase.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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Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewaterthrough short-cut nitrification-denitrification and partial anammox

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1318-x

Abstract: . • Extra NH4+-N from SFL was removed by anammox in anoxic phase. • Nitrogen removal efficiency of 92.51%was achieved in municipal wastewater. • The novel system could efficiently treat low COD/N municipalBiological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wastedIn this study, the process of using SFL was successfully improved by involving anammox process.Stable short-cut nitrification was achieved after 46d and then anammox sludge was inoculated.

Keywords： Sludge fermentation liquid     Municipal wastewater     Advanced nitrogen removal     Short-cut nitrification     Partial    

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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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Effect of short-term atrazine addition on the performance of an anaerobic/anoxic/oxic process

Changyong WU, Xiaoling LI, Zhiqiang CHEN, Yongzhen PENG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 150-156 doi: 10.1007/s11783-010-0020-9

Abstract: wastewater with short-term atrazine addition.was achieved in the AO process.The phosphorus removal rate was not affected by the short-term addition of atrazine under the appliedAtrazine was not removed with the AO process, even via absorption by the activated sludge in the processof the short-term addition of atrazine.

Keywords： biological nutrient removal     atrazine     anaerobic/anoxic/oxic (A2O) process     oxygen demand removal     oxygen    

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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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Insights into simultaneous anammox and denitrification system with short-term pyridine exposure: Process

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1433-3

Abstract:

• Short-term effect of the pyridine exposure on the SAD process was

Keywords： Anammox     Inhibition     Metabolic pathway     Microbial community     Pyridine     SAD    

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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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Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 19-32 doi: 10.1007/s11465-009-0082-1

Abstract: An experimental study of the depth of cut in multipass abrasive waterjet (AWJ) cutting of alumina ceramicsIt is found that this cutting technique can significantly increase the depth of cut by an average ofPredictive models for the depth of cut are then developed.The modelling process starts with single pass cutting using a dimensional analysis technique and the

Keywords： abrasive waterjet     engineering ceramics     depth of cut     cutting performance     nozzle oscillation     machining    

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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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Experimental evaluation and simulation of volumetric shrinkage and warpage on polymeric composite short

GARZÓN,Luis M. LÓPEZ

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 287-293 doi: 10.1007/s11465-015-0346-x

Abstract:

A polymeric natural fiber-reinforced composite is developed by extrusion and injection molding processThe shrinkage and warpage of high-density polyethylene reinforced with short natural fibers of Guadua

Keywords： biocomposite     natural fiber     shrinkage     simulation     warpage    

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Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 58-64

Abstract: and ground is 5~8m, in order to insure the safety of the upper buildings, technologies of parallel cutwith big empty hole, one-time initiation and delay by parts, and multiply short holes were adopted in

Keywords： blasting design     parallel cut     big empty hole     delay- time initiation     short- hole blasting    

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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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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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Title Author Date Type Operation

Production of N

Youkui GONG,Yongzhen PENG,Shuying WANG,Sai WANG

Journal Article

Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewaterthrough short-cut nitrification-denitrification and partial anammox

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

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

Effect of short-term atrazine addition on the performance of an anaerobic/anoxic/oxic process

Changyong WU, Xiaoling LI, Zhiqiang CHEN, Yongzhen PENG,

Journal Article

Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Journal Article

Insights into simultaneous anammox and denitrification system with short-term pyridine exposure: Process

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

Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

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

Experimental evaluation and simulation of volumetric shrinkage and warpage on polymeric composite short

GARZÓN,Luis M. LÓPEZ

Journal Article

Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Journal Article

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

GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu

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