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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 from

Keywords： biological nutrient removal     denitrification     greenhouse gas     nitrification     nitrous oxide    

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Simulation of long-term nutrient removal in a full-scale closed-loop bioreactor for sewage treatment:

Zheng LI,Rong QI,Wei AN,Takashi MINO,Tadashi SHOJI,Willy VERSTRAETE,Jian GU,Shengtao LI,Shiwei XU,Min YANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 534-544 doi: 10.1007/s11783-014-0660-2

Abstract: In this study, the performance of nitrogen and phosphorus removal in a full-scale closed-loop bioreactorThe calibrated model could describe the long-term trend of nutrient removal and short-term variationscontributed 71.2% of the total Poly-P storage, which reveals the dominance of denitrifying phosphorus removal

Keywords： activated sludge model     Bayesian inference     biological nutrient removal     closed-loop bioreactor     oxidation    

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Practical consideration for design and optimization of the step feed process

Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 135-142 doi: 10.1007/s11783-012-0454-3

Abstract: such as the anaerobic/anoxic/oxic volumes, internal recycle ratios, and sludge retention times, for removalResults showed high removal efficiencies of COD of (85.0±1.7)%, ammonium of (99.7±0.2)%, total nitrogenaccounting for approximately 39.2% of PAOs, was also greatly beneficial to the nitrogen and phosphorus removalfor the wastewater treatment plant, because it had extremely competitive advantages such as higher nutrientremoval efficiencies, lower energy and dosages consumption, excellent settling sludge and operational

Keywords： University of Cape Town (UCT)     simultaneous nitrification and denitrification (SND)     denitrifying phosphorus removal     biological nutrient removal (BNR)    

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Optimization of denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 5, doi: 10.1007/s11783-018-1084-1

Abstract:

Advanced N and P removal was optimized to treat

Keywords： Denitrifying phosphorus removal     C/N ratio     Nitrate recycling     Carbon source type     Biological nutrient 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: the operation of a wastewater treatment plant (WWTP) in relation to Chemical Oxygen Demand (COD) and biologicalnutrient removal.Domestic wastewater with atrazine addition in 3 continuous days was treated when steady biological nutrientremoval was achieved in the AO process.The results showed that atrazine addition did not affect the removal of COD.

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

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Fluidized-Bed Bioreactor Applications for Biological Wastewater Treatment: A Review of Research and Developments Review

Michael J. Nelson, George Nakhla, Jesse Zhu

Engineering 2017, Volume 3, Issue 3,   Pages 330-342 doi: 10.1016/J.ENG.2017.03.021

Abstract: At present, the most cost-effective way of treating wastewater is with biological treatment processes90% of the influent organic matter and 80% of the nitrogen, and produces less than one-third as much biological

Keywords： Wastewater     Biological wastewater treatment     Fluidized-bed technology     Fluidized-bed reactor     Biologicalnutrient removal     Bio-particles     High-efficiency process    

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Kinetic analysis of anaerobic phosphorus release during biological phosphorus removal process

DOU Junfeng, LIU Xiang, LUO Guyuan

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 233-239 doi: 10.1007/s11783-007-0040-2

Abstract: Enhanced biological phosphorus removal (EBPR) is a commonly used and sustainable method for phosphorusremoval from wastewater.batch experiments were performed using the excessively aerated sludge from the aerobic unit of the biologicalphosphorus removal system in this study.

Keywords： interruption     process     ΔρP/Δρ     Enhanced biological     Poly-β-hydroxybutyrate    

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Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0911-0

Abstract: EBPR and PN/A were combined to enhance nutrients removal from municipal wastewater.Phosphorus and nitrogen removal was achieved in two separated units.Conventional biological removal of nitrogen and phosphorus is usually limited due to the lack of biodegradableIn this study, a new alternative consisting of enhanced biological phosphorus removal (EBPR) followedA maximum of nitrogen removal rate of 0.12 kg N?m ?d was finally achieved.

Keywords： Phosphorus removal     Partial nitrification     Anammox     Municipal wastewater    

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Experimental study of nitrite accumulation in pre-denitrification biological nitrogen removal process

WU Xuelei, CHEN Lunqiang, PENG Yongzhen, WANG Pu, WANG Yayi

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 236-240 doi: 10.1007/s11783-008-0008-x

Abstract: The effect of dissolved oxygen (DO) concentration on nitrite accumulation was investigated in a pilot-scale pre-denitrification process at room temperature for 100 days. In the first 10 days, due to the instability of the system, the DO concentration fluctuated between 1.0 and 2.0 mg/L. In the next 14 days, the DO concentration was kept at 0.5 mg/L and nitrite accumulation occurred, with the average nitrite accumulation rate at 91%. From the 25th day, the DO concentration was increased to 2.0 mg/L to destroy the nitrite accumulation, but nitrite accumulation rate was still as high as 90%. From the 38th day the nitrite accumulation rate decreased to 15%–30% linearly. From the 50th day, DO concentration was decreased to 0.5 mg/L to resume nitrite accumulation. Until the 83rd day the nitrite accumulation rate began to increase to 80%. Dissolved oxygen was the main cause of nitrite accumulation, taking into account other factors such as pH, free ammonia concentration, temperature, and sludge retention time. Because of the different affinity for oxygen between nitrite oxidizing bacteria and ammonia oxidizing bacteria when DO concentration was kept at 0.5 mg/L, nitrite accumulation occurred.
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Circulating fluidized bed biological reactor for nutrients removal

CUI Yubo, LIU Hongbo, BAI Chunxue

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 349-353 doi: 10.1007/s11783-008-0051-7

Abstract: A new biological nitrogen removal process, which is named herein “The circulating fluidized bed bioreactor(CFBBR)”, was developed for simultaneous removal of nitrogen and organic matter.from the aerobic bed enters the anaerobic bed from the bottom of the anaerobic bed, completing the removalbed) and a nitrified liquid recirculation rate of 400% based on the influent flow rate, the average removal

Keywords： soluble chemical     bioreactor     biological nitrogen     optimum nitrified     nitrogen removal    

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Technologies for pollutant removal and resource recovery from blackwater: a review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1683-3

Abstract:

● Blackwater is the main source of organics and nutrients in domestic wastewater.

Keywords： Blackwater     Water-flushing toilet     Sanitation     Nutrient recovery     Water reuse     Sustainable development    

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Realization of the First Water Plant with Biological Removal of Iron and Manganese

Li Dong,Yang Hong,Zhang Jie

Strategic Study of CAE 2003, Volume 5, Issue 7,   Pages 53-57

Abstract:

The project was designed according to the theory of biological fixation and removal of manganese.Inoculating the aboriginal manganese removal bacteria from raw water, after 2～3 months culture, the filterobtained the strong manganese removal ability.This theory solved the difficulty of manganese removal over the past harf of century and built the fistbiological removal of iron and manganese water plant in the world.

Keywords： biological fixation and removal of manganese     weak aeration     economic process     simultaneous removal    

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Feammox and anammox process facilitated by activated carbon as an electron shuttle for autotrophic biologicalnitrogen removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1498-z

Abstract:

• The autotrophic nitrogen removal combining Feammox and Anammox was

Keywords： Feammox     Anammox     Extracellular electron transfer     Electron shuttle     Activated carbon    

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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     chemically    

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polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen and phosphorus removal

Hongjing LI, Yinguang CHEN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 283-290 doi: 10.1007/s11783-010-0243-9

Abstract: effect of polyhydroxyalkanoates (PHA) and glycogen transformations on biologic nitrogen and phosphorus removalThe total nitrogen (TN) removal efficiency was 68% and 82% in SBR1 and SBR2, respectively.In the two SBRs, the soluble ortho-phosphate (SOP) removal efficiency was 94% and 99%, and the averageglycogen transformation, and poly-P contained in activated sludge and further determined TN and SOP removalMoreover, significant correlations between the SOP removal rate and the (PHV+ PH2MV)/PHA ratio were observed

Keywords： low dissolved oxygen (DO)     biological nitrogen and phosphorus removal     polyhydroxyalkanoates (PHA)     glycogen    

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Title Author Date Type Operation

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

Simulation of long-term nutrient removal in a full-scale closed-loop bioreactor for sewage treatment:

Zheng LI,Rong QI,Wei AN,Takashi MINO,Tadashi SHOJI,Willy VERSTRAETE,Jian GU,Shengtao LI,Shiwei XU,Min YANG

Journal Article

Practical consideration for design and optimization of the step feed process

Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG

Journal Article

Optimization of denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration

Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng

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

Fluidized-Bed Bioreactor Applications for Biological Wastewater Treatment: A Review of Research and Developments

Michael J. Nelson, George Nakhla, Jesse Zhu

Journal Article

Kinetic analysis of anaerobic phosphorus release during biological phosphorus removal process

DOU Junfeng, LIU Xiang, LUO Guyuan

Journal Article

Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Journal Article

Experimental study of nitrite accumulation in pre-denitrification biological nitrogen removal process

WU Xuelei, CHEN Lunqiang, PENG Yongzhen, WANG Pu, WANG Yayi

Journal Article

Circulating fluidized bed biological reactor for nutrients removal

CUI Yubo, LIU Hongbo, BAI Chunxue

Journal Article

Technologies for pollutant removal and resource recovery from blackwater: a review

Journal Article

Realization of the First Water Plant with Biological Removal of Iron and Manganese

Li Dong,Yang Hong,Zhang Jie

Journal Article

Feammox and anammox process facilitated by activated carbon as an electron shuttle for autotrophic biologicalnitrogen removal

Journal Article

Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Journal Article

polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen and phosphorus removal

Hongjing LI, Yinguang CHEN

Journal Article