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Short-term prediction of influent flow rate and ammonia concentration in municipal wastewater treatment

Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 128-136 doi: 10.1007/s11783-013-0598-9

Abstract: method is presented in this paper in order to estimate and predict the periodicity of the influent flowrate trend and rain events.The results show that 1) for both of the two plants, the periodicity affects the flow rate and NH concentrationsin different cycles (especially cycles longer than 1 day); 2) when the flow rate and NH concentrationsrate less obvious in intensive rainy periods.

Keywords： influent load prediction     wavelet de-noising     power spectrum density     autoregressive model     time-frequency analysis     wastewater treatment    

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Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a

Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 747-773 doi: 10.1007/s11708-022-0830-z

Abstract: pipelines owing to the low-temperature and high-pressure environment, although requiring the cooperation of flowrate, water content, gas-liquid ratio, and other specific factors.In addition, it summarized the influences of fluid flow and water content on the risk of hydrate blockageIn general, flow rate was implicated in the regulation of blockage risk through its characteristic toaffect sedimentation tendencies and flow patterns.

Keywords： hydrate     flow rate     water content     mechanism of pipeline blockage     rich liquid phase system    

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Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 406-412 doi: 10.1007/s11708-013-0266-6

Abstract: Through reacting-flow experiments performed on a full-scale experimental setup, the influence of differentoil flow rates on bituminous coal combustion as well as flow rates without coal feed was analyzed.second combustion chambers, these distributions remained almost unchanged under a constant coal feed rateHowever on the burner centerline, distributions increased slightly with increasing flow rate.At the same coal feed rate of 4 t/h, burner resistances are 480, 600, and 740 Pa for oil flow rates of

Keywords： ignition     coal     burner     boiler     oil flow rate    

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Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 429-434 doi: 10.1007/s11465-011-0247-6

Abstract: for elliptical lobe shape rotors profile and curvature of them have been derived and then Specific flowand wear rate proportional factor (WRPF) have been formulated.shape factor is changed for each value of number of outer rotor teeth in a feasible range and wear rateAlso in order to have better comparison specific flow has been presented.and show the significant improvement in wear of the rotors with negligible changes in the specific flow

Keywords： gerotor pump     elliptical lobe shape pump     wear rate proportional factor (WRPF)     specific flow    

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Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0943-5

Abstract: However, turbidity and algal contents fluctuated temporally in the direction of river flow.Statistical analysis showed that turbidity was strongly positively correlated with algal contents for flowrate<0.1 m·s , whereas it was strongly positively correlated with both algal contents and TOC for flowrate>0.1 m·s ., and was influenced by flow rate as well.

Keywords： Reclaimed water     Urban river     Turbidity     Algae     Flow rate    

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Experimental study on performance of passive and active solar stills in Indian coastal climatic condition

R. LALITHA NARAYANA, V. RAMACHANDRA RAJU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 105-113 doi: 10.1007/s11708-018-0536-4

Abstract: This present work is aimed to examine the effect of mass flow rate on distillate output and performanceIn the active solar still, with the optimum water depth, different flow rates of 0.5, 1 and 1.5 L/minIt is observed that both the mass flow rate and the variation of internal heat transfer coefficientswith the mass flow rate have a significant effect on the yield and performance of the still.The experimental results show that the combination of 1.5 L/min mass flow rate and an optimum water depth

Keywords： distillation efficiency     solar still     heat transfer coefficient     water depth     optimum and mass flow rate    

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Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 160-172 doi: 10.1007/s11708-014-0321-y

Abstract: thermal efficiency, the values of Nusselt have been compared with those of smooth duct under similar flow

Keywords： Nusselt number     flow rate     heat transfer     heat transfer coefficient     thermal efficiency     forced convection    

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A Modification of Evacuation Time Computational Model andSimulation Comparison Analyses With Olympic Stadium

Zhang Qingsong,Liu Mao,Zhao Guomin

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 64-69

Abstract: EDTM uses crowd flow theory and discrete computational methods to identify various width of egress thatavailable to the occupants for movement,  which is more accurate and practicable because the crowd flowrate is variable, while the crowd flow rate as the function of crowd density based on the empirical

Keywords： evacuation time     crowd flow rate     egress     simulation     Olympic stadium    

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Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium

M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 439-444 doi: 10.1007/s11465-012-0337-0

Abstract: Experiments were conducted in varying water pressure, nozzle traverse speed, abrasive mass flow rate

Keywords： abrasive waterjet     aluminium     garnet     water pressure     mass flow rate     traverse speed     standoff distance    

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The combined effects of biomass and temperature on maximum specific ammonia oxidation rate in domestic

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1411-9

Abstract:

• Actual SAORs was determined using MLVSS and temperature.

Keywords： Specific ammonia oxidation rate     Sequencing batch reactor     Biomass     Temperature coefficient     Model simulation    

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Use of float consumption rate in resource leveling of construction projects

Atilla DAMCI, Gul POLAT, Firat Dogu AKIN, Harun TURKOGLU

Frontiers of Engineering Management 2022, Volume 9, Issue 1,   Pages 135-147 doi: 10.1007/s42524-020-0118-0

Abstract: Although the main principle behind traditional resource leveling is achieving an even flow of resourcesThe float consumption rate is the percentage that is set to determine the maximum amount of float which

Keywords： resource management     resource leveling     float consumption rate     scheduling    

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated

Keywords： Mechanically and biologically treated waste     Landfill     Triaxial test     Loading rate     Axial strain     Shear    

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Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for high-rate

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1788-1800 doi: 10.1007/s11705-023-2326-8

Abstract: exhibited a significant energy storage capability of 265 F·g–1 at 0.5 A·g–1 and high-rate

Keywords： carbon nanospheres     size-controlled     nitrogen-doped     high-rate     supercapacitors    

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Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 386-397 doi: 10.1007/s11708-011-0156-8

Abstract: By performing gas flow field numerical simulations for several inlet Reynolds numbers (from 2 × 10to 9 × 10 ) and byflow ratios (from 10% to 20%), the present study has proposed to improve the flowNo particle has been included in the gas flow for a -epsilon turbulence model.Then the flow passage improvement method has focused on the separation area.in this study has succeeded in designing a shape which enhances the flow behavior.

Keywords： streamlines     pressure losses     flow passage improvement     inlet particle separator (IPS)    

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Improved rate-based modeling of carbon dioxide absorption with aqueous monoethanolamine solution

Stefania MOIOLI, Laura A. PELLEGRINI, Simone GAMBA, Ben LI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 123-131 doi: 10.1007/s11705-014-1415-0

Abstract: The aim is to obtain a reliable tool for process simulation: a customized rate-based model has been developed

Keywords： Absorption     carbon dioxide capture     rate-based model     monoethanolamine scrubbing    

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Title Author Date Type Operation

Short-term prediction of influent flow rate and ammonia concentration in municipal wastewater treatment

Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON

Journal Article

Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a

Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO

Journal Article

Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN

Journal Article

Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Journal Article

Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Journal Article

Experimental study on performance of passive and active solar stills in Indian coastal climatic condition

R. LALITHA NARAYANA, V. RAMACHANDRA RAJU

Journal Article

Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI

Journal Article

A Modification of Evacuation Time Computational Model andSimulation Comparison Analyses With Olympic Stadium

Zhang Qingsong,Liu Mao,Zhao Guomin

Journal Article

Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium

M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA

Journal Article

The combined effects of biomass and temperature on maximum specific ammonia oxidation rate in domestic

Journal Article

Use of float consumption rate in resource leveling of construction projects

Atilla DAMCI, Gul POLAT, Firat Dogu AKIN, Harun TURKOGLU

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for high-rate

Journal Article

Numerical study of internal flow field and flow passage improvement of an inlet particle separator

Florian PAOLI, Tong WANG

Journal Article

Improved rate-based modeling of carbon dioxide absorption with aqueous monoethanolamine solution

Stefania MOIOLI, Laura A. PELLEGRINI, Simone GAMBA, Ben LI

Journal Article