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Advanced nitrogen and phosphorus removal in A

Jianhua WANG, Yongzhen PENG, Yongzhi CHEN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 474-480 doi: 10.1007/s11783-011-0360-0

Abstract: bigger anoxic zone and biologic aerated filter (A O-BAF) system was operated to treat low carbon-to-nitrogenThe A O process was employed mainly for organic matter and phosphorus removal, and for denitrificationof phosphorus along with nitrogen, which indicated that the suspended activated sludge process presenteda good denitrifying phosphorus removal performance.The average removal efficiency of chemical oxygen demand (COD), total nitrogen (TN), total phosphorus

Keywords： zone and biologic aerated filter (A2O-BAF) system     domestic wastewater with low carbon-to-nitrogenratio     advanced nitrogen and phosphorus removal     denitrifying phosphorus removal    

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Research on polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen andphosphorus removal in low dissolved oxygen systems

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: was conducted on the effect of polyhydroxyalkanoates (PHA) and glycogen transformations on biologic nitrogenand phosphorus removal in low dissolved oxygen (DO) systems.The total nitrogen (TN) removal efficiency was 68% and 82% in SBR1 and SBR2, respectively.transformations should be taken into account as key components for optimizing anaerobic/aerobic (low DO) biologic nitrogenand phosphorus removal systems.

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

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Combined biologic aerated filter and sulfur/ceramisite autotrophic denitrification for advanced wastewaternitrogen removal at low temperatures

Tian WAN,Guangming ZHANG,Fengwei DU,Junguo HE,Pan WU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 967-972 doi: 10.1007/s11783-014-0690-9

Abstract: An innovative advanced wastewater treatment process combining biologic aerated filter (BAF) and sulfur/ceramisite-based autotrophic denitrification (SCAD) for reliable removal of nitrogen was proposed inThe performance of this process was investigated, and the impact of temperature on nitrogen removal wasResults showed that the combined system was effective in nitrogen removal even at low temperatures (8Removal of total nitrogen (TN), -N, N reached above 90% at room temperature.

Keywords： denitrification     biologic aerated filter (BAF)     sulfur/ceramisite-based autotrophic denitrification (SCAD)     advancednitrogen removal    

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Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

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: . • Nitrogen removal efficiency of 92.51% was achieved in municipal wastewater. • The novel system couldBiological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wastedIn the stable period, effluent total inorganic nitrogen (TIN) was less than 4.3 mg/L with removal efficiencyOverall, this study suggests anammox could be combined with SFL addition, resulting in a stable enhanced nitrogenbiological removal.

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

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On-line controlling system for nitrogen and phosphorus removal of municipal wastewater in a sequencing

LI Jun, NI Yongjiong, WEI Su, CHENG Guobiao, OU Changjin, PENG Yongzhen, GU Guowei, LU Jingen

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 99-102 doi: 10.1007/s11783-008-0017-9

Abstract: The objectives of this study were to establish an on-line controlling system for nitrogen and phosphorusremoval synchronously of municipal wastewater in a sequencing batch reactor (SBR).The variation of DO, ORP and pH is relevant to each phase of biological process for nitrogen and phosphorusremoval in this SBR.The controlling system can operate automatically for nitrogen and phosphorus efficiently removal.

Keywords： DO     relevant     biological process     nitrogen     pH    

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Advanced nitrogen removal by pulsed sequencing batch reactors (SBR) with real-time control

YANG Qing, PENG Yongzhen, YANG Anming, LI Jianfeng, GUO Jianhua

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 488-492 doi: 10.1007/s11783-007-0078-1

Abstract: feasibility of pH and oxidation reduction potential (ORP) as on-line control parameters to advance nitrogenremoval in pulsed sequencing batch reactors (SBR) was evaluated.

Keywords： reduction potential     oxidation reduction     operational     feasibility     nitrogen    

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Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 33-38 doi: 10.1007/s11783-007-0006-4

Abstract: Since eutrophication has become increasingly severe in China, nitrogen and phosphorous have been theconcern of wastewater treatment, especially nitrogen removal.The stabilization of the intelligent control system and nitrogen removal efficiency were investigatedUsing the intelligent control system not only could save energy, but also could achieve advanced nitrogenremoval.

Keywords： eutrophication     pilot-scale aerobic-anoxic     stabilization     oxidation reduction     nitrification    

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Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1564-1

Abstract:

● A new model for bloom control in open land scape water was constructed.

Keywords： Reclaimed water landscape     Algal bloom     Nitrogen and phosphorus     Hydraulic retention time     Threshold    

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Anoxic phosphorus removal in a pilot scale anaerobic-anoxic oxidation ditch process

Hongxun HOU, Shuying WANG, Yongzhen PENG, Zhiguo YUAN, Fangfang YIN, Wang GAN

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1,   Pages 106-111 doi: 10.1007/s11783-009-0005-8

Abstract: of DPB to biological nutrient removal, and enhance the denitrifying phosphorus removal in the A /O ODremoval.removal performance.Phosphorus uptake took place in the anoxic zone by poly-phosphorus accumulating organisms could beused as electron receptors in denitrifying phosphorus removal, and the phosphorus uptake rate with

Keywords： wastewater treatment     anaerobic-anoxic (A2/O)     oxidation ditch (OD)     biological phosphorus removal     denitrifying phosphorus removal    

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Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1463-x

Abstract:

• Lanthanum modified bentonite (LMB) can effectively absorb phosphorus

Keywords： Sediment     Eutrophication     Thin-layer capping     Phosphorus     Nitrogen     Aluminum-based P-inactivation agent    

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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: Phosphorus and nitrogen removal was achieved in two separated units.A proper post-anoxic phase improved the nitrogen removal performance of PN/A unit.Conventional biological removal of nitrogen and phosphorus is usually limited due to the lack of biodegradableA maximum of nitrogen removal rate of 0.12 kg N?m ?d was finally achieved.During the stable period, effluent concentrations of total phosphorus and total nitrogen were 0.25 and

Keywords： Phosphorus removal     Partial nitrification     Anammox     Municipal wastewater    

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INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Jouke OENEMA, Oene OENEMA

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,   Pages 130-147 doi: 10.15302/J-FASE-2020376

Abstract: Many grassland-based dairy farms are intensifying production, i.e., produce more milk per ha of land in response to the increasing demand for milk (by about 2% per year) in a globalized market. However, intensive dairy farming has been implicated for its resources use, ammonia and greenhouse gas emissions, and eutrophication impacts. This paper addresses the question of how the intensity of dairy production relates to N and P surpluses and use efficiencies on farms subjected to agri-environmental regulations. Detailed monitoring data were analyzed from 2858 grassland-based dairy farms in The Netherlands for the year 2015. The farms produced on average 925 Mg·yr milk. Milk production per ha ranged from<10 to>30 Mg·ha ·yr . Purchased feed and manure export strongly increased with the level of intensification. Surpluses of N and P at farm level remained constant and ammonia emissions per kg milk decreased with the level of intensification. In conclusion, N and P surpluses did not differ much among dairy farms greatly differing in intensity due to legal N and P application limits and obligatory export of manure surpluses to other farms. Further, N and P use efficiencies also did not differ among dairy farms differing in intensity provided the externalization of feed production was accounted for. This paper provides lessons for proper monitoring and control of N and P cycling in dairy farming.

Keywords： ammonia     externalization     feed     forage maize     front runners     manure production     milk yield     nitrogen surplus    

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Biotoxicity evaluation of zinc oxide nanoparticles on bacterial performance of activated sludge at COD, nitrogen, and phosphorus reduction

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1453-z

Abstract:

• ZnO-NP disrupted metabolic/catabolic balance of bacteria by affecting DHA activity.

Keywords： Granular sludge     Biotoxicity     Reactive oxygen species     Extracellular polymeric substances    

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Optimization of phosphorus removal in uniFed SBR system for domestic wastewater treatment

Xuguang TANG, Shuying WANG, Yongzhen PENG

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 475-481 doi: 10.1007/s11783-010-0244-8

Abstract: The characteristic of phosphorus removal and appropriate change of the traditional operation modes wereUniFed SBR system with its unique operation mode had the distinct superiority of phosphorus removal.removal were studied.Appropriate change of the traditional operation modes could optimize the efficiency of phosphorus removalThe carbon source in the influent can be used adequately, and denitrifying phosphorus removal was carried

Keywords： UniFed sequencing batch reactor (SBR)     phosphorus removal     volumetric exchange ratio (VER)     alternation    

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INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,

Abstract:

• Monitoring data of>5000 dairy farms collected and examined in uniform manner.

• Environmental performances of farms influenced by government regulations.

• N and P surpluses at farm level remained about constant with intensity level.

• N and P use efficiencies at farm, herd and soil increased with intensity level.

• Accounting for externalization of off-farm feed production affects NUE and PUE.

• Ammonia emissions per kg milk decreased with the level of intensification.

 

Many grassland-based dairy farms are intensifying production, i.e., produce more milk per ha of land in response to the increasing demand for milk (by about 2% per year) in a globalized market. However, intensive dairy farming has been implicated for its resources use, ammonia and greenhouse gas emissions, and eutrophication impacts. This paper addresses the question of how the intensity of dairy production relates to N and P surpluses and use efficiencies on farms subjected to agri-environmental regulations. Detailed monitoring data were analyzed from 2858 grassland-based dairy farms in The Netherlands for the year 2015. The farms produced on average 925 Mg·yr−1 milk. Milk production per ha ranged from<10 to>30 Mg·ha−1·yr−1. Purchased feed and manure export strongly increased with the level of intensification. Surpluses of N and P at farm level remained constant and ammonia emissions per kg milk decreased with the level of intensification. In conclusion, N and P surpluses did not differ much among dairy farms greatly differing in intensity due to legal N and P application limits and obligatory export of manure surpluses to other farms. Further, N and P use efficiencies also did not differ among dairy farms differing in intensity provided the externalization of feed production was accounted for. This paper provides lessons for proper monitoring and control of N and P cycling in dairy farming.

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Title Author Date Type Operation

Advanced nitrogen and phosphorus removal in A

Jianhua WANG, Yongzhen PENG, Yongzhi CHEN

Journal Article

Research on polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen andphosphorus removal in low dissolved oxygen systems

Hongjing LI, Yinguang CHEN

Journal Article

Combined biologic aerated filter and sulfur/ceramisite autotrophic denitrification for advanced wastewaternitrogen removal at low temperatures

Tian WAN,Guangming ZHANG,Fengwei DU,Junguo HE,Pan WU

Journal Article

Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

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

Journal Article

On-line controlling system for nitrogen and phosphorus removal of municipal wastewater in a sequencing

LI Jun, NI Yongjiong, WEI Su, CHENG Guobiao, OU Changjin, PENG Yongzhen, GU Guowei, LU Jingen

Journal Article

Advanced nitrogen removal by pulsed sequencing batch reactors (SBR) with real-time control

YANG Qing, PENG Yongzhen, YANG Anming, LI Jianfeng, GUO Jianhua

Journal Article

Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Journal Article

Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom

Journal Article

Anoxic phosphorus removal in a pilot scale anaerobic-anoxic oxidation ditch process

Hongxun HOU, Shuying WANG, Yongzhen PENG, Zhiguo YUAN, Fangfang YIN, Wang GAN

Journal Article

Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

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

INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Jouke OENEMA, Oene OENEMA

Journal Article

Biotoxicity evaluation of zinc oxide nanoparticles on bacterial performance of activated sludge at COD, nitrogen, and phosphorus reduction

Journal Article

Optimization of phosphorus removal in uniFed SBR system for domestic wastewater treatment

Xuguang TANG, Shuying WANG, Yongzhen PENG

Journal Article

INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Journal Article