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Control of sludge settleability and nitrogen removal under low dissolved oxygen condition

Zhaoxu PENG, Yongzhen PENG, Zhenbo YU, Xuliang LIU, Xiaoling LI, Randeng WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 884-891 doi: 10.1007/s11783-012-0408-9

Abstract: Low dissolved oxygen (DO) is an energy-saving condition in activated sludge process.and setting pre-anoxic (anaerobic) phase were effective strategies to induce and inhibit filamentous sludgeAccording to the sludge settleability, LFB could be maintained steadily by adjusting operation patternsFilamentous bacteria content and sludge volume index (SVI) were likely correlated.settleability in spite of the unstable status of activated sludge system.

Keywords： limited filamentous bulking     sequencing batch reactor     sludge settleability     sludge volume index     simultaneous    

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Bioaerosolization behavior along sewage sludge biostabilization

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1339-5

Abstract:

• Aerosolization behavior during a lab-scale sludge biostabilization

Keywords： Sludge     Composting     Bioaerosol     Bioaerosolization index     High-throughput sequencing     4′     6-diamidino-    

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Accelerated engineering properties of high and low volume fly ash concretes reinforced with glued steel

Vallarasu Manoharan SOUNTHARARAJAN, Dr. Anandan SIVAKUMAR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 429-445 doi: 10.1007/s11709-013-0226-6

Abstract: Low and high volume fly ash concrete mixtures were studied systematically with the addition of acceleratingAlso, it can be noted that the high volume fly ash (50%) addition in concrete showed a reduction in strength

Keywords： fly ash     pozzolanic index     steam curing     superplasticizer     accelerator     steel fibres     elastic modulus    

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Fast implementation of kernel simplex volume analysis based on modified Cholesky factorization for endmember

Jing LI,Xiao-run LI,Li-jiao WANG,Liao-ying ZHAO

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3,   Pages 250-257 doi: 10.1631/FITEE.1500244

Abstract: inconsistency in final results; second, excessive computation is caused by the iterations of a simplex volumeTo solve the first issue, the spatial pixel purity index (SPPI) method is used in this study to extractapproach tackles the second issue by initially using a modified Cholesky factorization to decompose the volumetriangular matrices, in order to avoid directly computing the determinant tautologically in the simplex volume

Keywords： Endmember extraction     Modified Cholesky factorization     Spatial pixel purity index (SPPI)     New simplex    

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Assessment of liver volume variation to evaluate liver function

Cong Tong, Xinsen Xu, Chang Liu, Tianzheng Zhang, Kai Qu

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 421-427 doi: 10.1007/s11684-012-0223-5

Abstract: to get a regression formula for standard liver volume (SLV) and BSA.It turned out that the mean liver volume of the control group was 1 058±337 cm3.The hepatic volume of cirrhosis patients in Child A, B level was not reduced, but in Child C level itwas significantly reduced with the lowest liver volume index (CTLV/SLV).Likewise, in the death group of ALF patients, the volume index was significantly lower than that of the

Keywords： liver volume variation     cirrhosis     acute liver failure (ALF)    

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Methanogenic community structure in simultaneous methanogenesis and denitrification granular sludge

Yujiao Sun, Juanjuan Zhao, Lili Chen, Yueqiao Liu, Jiane Zuo

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1067-2

Abstract:

• UASB with SMD granules was operated with high removal efficiency of COD and NO3--N.

• Methanosaetaceae was absolute predominant methanogen in SMD granules.

• The methanogen quantity and activity decreased as C/N decreased from 20:1 to 5:1.

• Bacterial community succession happened with C/N decreasing.

Keywords： Simultaneous methanogenesis and denitrification (SMD)     Methanogens     Community structure     Diversity index     Granular sludge    

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Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: Aggregates are the biggest contributor to concrete volume and are a crucial parameter in dictating its, a detailed experimental investigation was carried out to evaluate the effect of sand-to-aggregate volume

Keywords： aggregates     non-destructive testing     sand-to-aggregate volume ratio (s/a)     maximum aggregate    

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Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 296-305 doi: 10.1007/s11705-018-1701-3

Abstract: membrane separation process for volatile organic compounds by combining the MD simulation with the free volumeand pure gas permeation data are employed to correlate pressure-irrelevant parameters for the free volume

Keywords： membrane vapor separation     membrane process modeling     process engineering     free volume theory     volatile organic    

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Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 63-66 doi: 10.1007/s11783-007-0012-6

Abstract: In order to study the minimization of excess sludge production, the reduction in the excess sludge productionThe experimental results show that such an addition could effectively reduce the production of excess sludgeestablished in this work, energy uncoupling coefficient () was used to evaluate the reduction in excess sludgepresence of dNP, and that dNP was an effective uncoupler for reducing the production of excess activated sludge

Keywords： uncoupling coefficient     Cu     minimization     presence     uncoupling    

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Co-pyrolysis of sludge and kaolin/zeolite in a rotary kiln: Analysis of stabilizing heavy metals

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1488-1

Abstract:

• Adding kaolin/zeolite promotes the formation of stable heavy metals.

Keywords： Co-pyrolysis     Sewage sludge     Heavy metals     Rotary kiln     Immobilization mechanism    

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Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activatedsludge system

Xi CHEN,Linjiang YUAN,Wenjuan LU,Yuyou LI,Pei LIU,Kun NIE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 324-333 doi: 10.1007/s11783-014-0627-3

Abstract: Aerobic granules were formed in a conventional, continuous flow, completely mixed activated sludge systemThe reactor was inoculated with seed sludge containing few filaments and fed with synthetic municipalThe settling time of the sludge and the average dissolved oxygen (DO) of the reactor were 2 h and 4.2The reactor was agitated by a stirrer, with a speed of 250 r·min , to ensure good mixing．The granular sludgehad good settleability, and the sludge volume index (SVI) was between 50 and 90 mL·g .

Keywords： aerobic granular sludge     completely mixed activated sludge system (CMAS)     continuous flow     shear force     filamentous    

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High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1364-4

Abstract:

• High-solid anaerobic digestion (HS-AD) of sewage sludge (SS) is overviewed

Keywords： High-solid effect     Anaerobic fermentation     Methane production     Biodegradability     Sludge treatment    

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A review on sustainable reuse applications of Fenton sludge during wastewater treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1511-6

Abstract:

• The sustainable approaches related to Fenton sludge reuse systems

Keywords： Fenton sludge     Heavy metals     Coagulant     Iron source     Heterogeneous catalyst    

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Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 117-124 doi: 10.1007/s11783-010-0220-3

Abstract: In this work we investigated the chemical, thermal and toxic properties of dried sewage sludge (DSS),the preparation and properties of lightweight sludge ceramic (LSC) and the mechanisms of action of the

Keywords： sludge     foaming agents     ceramics     preheating process    

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Effect of wastewater composition on the calcium carbonate precipitation in upflow anaerobic sludge blanket

Shucheng YANG, Yanling HE, Charles CHOU, Pengxiang ZHANG, Dongqi WANG, Yonghong LIU,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 142-149 doi: 10.1007/s11783-010-0026-3

Abstract: to study the effect of wastewater composition on calcium carbonate precipitation in upflow anaerobic sludgehad significant influence on the location of calcium carbonate precipitation in anaerobic granular sludgewhich was expected due to the different methanogens distribution and pH gradient within the granular sludgecarbonate precipitation substantially affected the specific methanogenic activity (SMA) of the granular sludge

Keywords： calcium carbonate     precipitation     anaerobic granular sludge     wastewater composition     microstructure     upflowanaerobic sludge blanket (UASB)    

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Title Author Date Type Operation

Control of sludge settleability and nitrogen removal under low dissolved oxygen condition

Zhaoxu PENG, Yongzhen PENG, Zhenbo YU, Xuliang LIU, Xiaoling LI, Randeng WANG

Journal Article

Bioaerosolization behavior along sewage sludge biostabilization

Journal Article

Accelerated engineering properties of high and low volume fly ash concretes reinforced with glued steel

Vallarasu Manoharan SOUNTHARARAJAN, Dr. Anandan SIVAKUMAR

Journal Article

Fast implementation of kernel simplex volume analysis based on modified Cholesky factorization for endmember

Jing LI,Xiao-run LI,Li-jiao WANG,Liao-ying ZHAO

Journal Article

Assessment of liver volume variation to evaluate liver function

Cong Tong, Xinsen Xu, Chang Liu, Tianzheng Zhang, Kai Qu

Journal Article

Methanogenic community structure in simultaneous methanogenesis and denitrification granular sludge

Yujiao Sun, Juanjuan Zhao, Lili Chen, Yueqiao Liu, Jiane Zuo

Journal Article

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Journal Article

Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Journal Article

Co-pyrolysis of sludge and kaolin/zeolite in a rotary kiln: Analysis of stabilizing heavy metals

Journal Article

Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activatedsludge system

Xi CHEN,Linjiang YUAN,Wenjuan LU,Yuyou LI,Pei LIU,Kun NIE

Journal Article

High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Journal Article

A review on sustainable reuse applications of Fenton sludge during wastewater treatment

Journal Article

Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

Journal Article

Effect of wastewater composition on the calcium carbonate precipitation in upflow anaerobic sludge blanket

Shucheng YANG, Yanling HE, Charles CHOU, Pengxiang ZHANG, Dongqi WANG, Yonghong LIU,

Journal Article