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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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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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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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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.were performed using the excessively aerated sludge from the aerobic unit of the biological phosphorusremoval system in this study.The interruption of anaerobic HAc-uptake and phosphorus-release occurs when the glycogen in the phosphorus-accumulating-organisms

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

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Ammonia and phosphorus removal from agricultural runoff using cash crop waste-derived biochars

Alisa Salimova, Jian’e Zuo, Fenglin Liu, Yajiao Wang, Sike Wang, Konstantin Verichev

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1225-1

Abstract: . • Modified tea tree residuals biochar had a stronger ability to remove phosphorus. • Partially-modifiedbiochar could remove ammonia and phosphorus at the same time. • The real runoff experiment showed anammonia nitrogen removal rate of about 80%. • The removal rate of total phosphorus in real runoff experimentAl-modified Orange Tree BC 3h/500°C showed the best performance for ammonia removal with an adsorptionPhosphorus adsorption was related to oxidation and interaction between PO43– and Fe3+.

Keywords： Biochar     Adsorption     Ammonia removal     Phosphorus removal     Agricultural runoff    

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Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 334-340 doi: 10.1007/s11783-009-0039-y

Abstract: From March 2007 to March 2008, the average concentration of total nitrogen (TN) and total phosphorusThe trophic level of XBA was meso-eutrophic, while the general nutrient limitation was phosphorus.N-fixation from cyanobacteria occurred and became an important process in overcoming the nitrogen deficitThe increase of TP in XBA was caused mainly by particulate phosphorus, which could originate from a non-point

Keywords： Three Gorges Reservoir     eutrophication     nitrogen     phosphorus     seasonal variation     chlorophyll    

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Removing nitrogen and phosphorus from simulated wastewater using algal biofilm technique

WEI Qun, HU Zhiquan, LI Genbao, XIAO Bo, SUN Hao, TAO Meiping

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 446-451 doi: 10.1007/s11783-008-0064-2

Abstract: Experimental study on removing nitrogen and phosphorus from simulated wastewater using algal biofilmThe results showed that the effect of removing nitrogen and phosphorus by algal biofilm was remarkableThe removal efficiencies of total phosphorus (TP), total nitrogen (TN), ammonia-nitrogen (NH-N), andDuring a run of 24 days, the removal efficiencies of TP, TN, NH-N, and COD reached 95.38%, 83.93%, 82.38%This study demonstrates the feasibility of removing nitrogen and phosphorus from simulated wastewater
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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

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

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

Kinetic analysis of anaerobic phosphorus release during biological phosphorus removal process

DOU Junfeng, LIU Xiang, LUO Guyuan

Journal Article

Ammonia and phosphorus removal from agricultural runoff using cash crop waste-derived biochars

Alisa Salimova, Jian’e Zuo, Fenglin Liu, Yajiao Wang, Sike Wang, Konstantin Verichev

Journal Article

Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Journal Article

Removing nitrogen and phosphorus from simulated wastewater using algal biofilm technique

WEI Qun, HU Zhiquan, LI Genbao, XIAO Bo, SUN Hao, TAO Meiping

Journal Article