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Research on flocculation conditions and coking wastewatertreatment of Microbial Flocculants

Wei Xiaojin,Li Jing,He Xuwen

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 88-91

Abstract: One strain of Bacillus SP. from the activated sludge is able to produce a stable and efficient bio- flocculationThe flocculation properties and application of this microbial flocculants in wastewater treatment areThe results show that the optimum flocculation can be reached in conditions as follows: above pH 7.0,In the optimum flocculation condition the strain boasts obvious coagulation efficiency in wastewatertreatment with produced bio- flocculation.

Keywords： microbial flocculants     flocculation conditions     coking wastewater treatment    

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The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1310-5

Abstract: Electro-flocculation has emerged as a powerful remediation technology.Electro-flocculation in a bubble column tower with a bipolar electrode (BPE) was tested in an attemptThe system’s electro-flocculation and electrical floatation removed turbidity, phosphate and sulphion

Keywords： Black-odorous water     Bipolar electrodes     Flocculation     Floatation     Oxygen enrichment     Turbidity    

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Flocculation behaviors of a novel papermaking sludge-based flocculant in practical printing and dyeing

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1390-x

Abstract:

•PSBF performed better than PAC and PAM in CODCr removals.

Keywords： Practical wastewater treatment     Commercial coagulant/flocculant     Secondary coagulation-flocculation process     Chemical oxygen demand     Coagulation-flocculation mechanism    

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Performance evaluation on the pollution control against wet weather overflow based on on-site coagulation/flocculation

Zongqun Chen, Wei Jin, Hailong Yin, Mengqi Han, Zuxin Xu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1400-z

Abstract: Abstract • A way for overflow control based on on-site coagulation/flocculation was proposed. • CoagulantThe conventional overflow treatment based on coagulation/flocculation in terminal drainage systems requiresOn-site coagulation/flocculation in terminal drainage pipes was proposed in this study which was aimedto transfer the coagulation/flocculation process to the inside of pipes at the terminal drainage systemto save space and reduce the retention time of the coagulation/flocculation process.

Keywords： Wet weather overflow     On-site coagulation/flocculation     Fast removal of particulate pollutants    

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Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface

Ziming Zhao, Wenjun Sun, Madhumita B. Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1159-7

Abstract: Charge neutralization and sweep flocculation were the major mechanisms.Optimal coagulation conditions were studied by response surface methodology.that the major mechanisms of coagulation to remove algae and DOM were charge neutralization and sweep flocculationThe optimal coagulation conditions with coagulant dosage of 7.57 mg Al/L, pH of 5.42 and initial algalfor the treatment of algae-laden surface water in practical application by the optimal coagulation-flocculation

Keywords： Algae     Coagulation-flocculation     Response surface methodology     Artificial neural networks    

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Changes of ecological conditions induced by rock tunneling in Laoshan Mountain area

LI Xiaozhao, ZHAO Xiaobao, WANG Zhongsheng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 366-370 doi: 10.1007/s11709-008-0056-0

Abstract: Through field investigation, this paper examined the changes of ecological conditions induced by tunnelThe changed ecological conditions are beneficial for the settlement and growth of some herb and shrub

Keywords： supplement     fragmentation     reference     tunneling activity     vegetation situation    

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Suspended solid abatement in a conical fluidized bed flocculator

Dandan ZHOU, Shuangshi DONG, Keyu LI, Huizhong JIANG, Dandan SHANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 127-134 doi: 10.1007/s11783-012-0415-x

Abstract: The abatement efficiencies of the suspended fine solids under several hydrodynamic conditions were studiedThe suspended solids abatement efficiency was found to increase with increasing Camp Number and flocculation

Keywords： conical fluidized bed     flocculation     velocity gradient    

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What have we known so far about microplastics in drinking water treatment? A timely review

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-021-1492-5

Abstract:

• 23 available research articles on MPs in drinking water treatment are reviewed.

Keywords： Microplastics     Drinking water treatment     Coagulation     Flocculation     Membrane     Filtration    

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Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 487-500 doi: 10.1007/s11709-020-0609-4

Abstract: evaluate the performance of the artificial neural network (ANN) approach for predicting interlayer conditionsTo achieve this goal, two ANN based back-calculation models were proposed to predict the interlayer conditionsback-calculation model developed with ANN could be used to accurately predict layer modulus and interlayer conditions

Keywords： asphalt pavement     interlayer conditions     finite element method     artificial neural network     back-calculation    

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Influence of initial curing conditions and exposure environments on chloride migration in concrete using

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 348-353 doi: 10.1007/s11709-010-0077-3

Abstract: To investigate the influence of initial curing conditions and exposure environments on chloride ions’ migration in concrete, the specimens that were cured in different conditions and placed in severalThe results indicated that the initial curing conditions and the wet-dry interval of external environments

Keywords： durability     effective diffusion coefficient     steady-state     migration test    

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Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 401-408 doi: 10.1007/s11465-013-0272-8

Abstract: A decay analysis technique developed by Gregory and Wan is converted into necessary conditions on theThe prescribed end-data of the circle cylinder must satisfy these conditions in order that they couldWhen stress and mixed conditions are imposed on the end of cylinder, these decaying state conditionsThey are then used for the correct formulation of boundary conditions for the theory solution (or theThe results of the present paper enable us to establish a set of correct boundary conditions, most of

Keywords： solid and structures     the axisymmetric deformation     the piezoelectric circular cylinder     the refined theory     Bessel’s Function    

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Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 359-368 doi: 10.1007/s11465-011-0222-2

Abstract: numerically simulated, considering the rotation speeds of a turntable from 0 to 5 m/s and different boundary conditions

Keywords： hydrostatic oil cavity     flow state     oil cavity pressure     stability     vortex    

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Performance design of a cryogenic air separation unit for variable working conditions using the lumped

Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 24-42 doi: 10.1007/s11465-019-0558-6

Abstract: semiconductor industries, are being developed with high operating elasticity under variable working conditionsand energy conservation laws, the piecewise-lumped parameters are extracted under variable working conditionsexchangers, and packing column of a 100000 Nm O /h large-scale ASU is enhanced to adapt to variable working conditions

Keywords： performance design     air separation unit (ASU)     lumped parameter model (LPM)     variable working conditions    

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Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1331-1348 doi: 10.1007/s11709-020-0686-4

Abstract: This article proposes a novel methodology that uses mathematical and numerical models of a structure to build a data set and determine crucial nodes that possess the highest sensitivity. Regression surfaces between the structural parameters and structural output features, represented by the natural frequencies of the structure and local transmissibility, are built using the numerical data set. A description of a possible experimental application is provided, where sensors are mounted at crucial nodes, and the natural frequencies and local transmissibility at each natural frequency are determined from the power spectral density and the power spectral density ratios of the sensor responses, respectively. An inverse iterative process is then applied to identify the structural parameters by matching the experimental features with the available parameters in the myriad numerical data set. Three examples are presented to demonstrate the feasibility and efficacy of the proposed methodology. The results reveal that the method was able to accurately identify the boundary coefficients and physical parameters of the Euler-Bernoulli beam as well as a highway bridge model with elastic foundations using only two measurement points. It is expected that the proposed method will have practical applications in the identification and analysis of restored structural systems with unknown parameters and boundary coefficients.

Keywords： structural model validation     eigenvalue problem     response surface     inverse problems    

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of preozonation on the bioactivity and biodiversity of subsequent biofilters under low temperature conditions—A

Jiaxuan YANG, Jun MA, Dan SONG, Xuedong ZHAI, Xiujuan KONG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0844-z

Abstract: The bioactivity was enhanced by preozonation under low temperature conditions.Temperature and nutrients are the dominant factors in external conditions to influence the biological

Keywords： Preozonation     BAC filtration     High ammonia level     Bacterial activity     Microbial community structure     Pilot scale study    

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Title Author Date Type Operation

Research on flocculation conditions and coking wastewatertreatment of Microbial Flocculants

Wei Xiaojin,Li Jing,He Xuwen

Journal Article

The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Journal Article

Flocculation behaviors of a novel papermaking sludge-based flocculant in practical printing and dyeing

Journal Article

Performance evaluation on the pollution control against wet weather overflow based on on-site coagulation/flocculation

Zongqun Chen, Wei Jin, Hailong Yin, Mengqi Han, Zuxin Xu

Journal Article

Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface

Ziming Zhao, Wenjun Sun, Madhumita B. Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Journal Article

Changes of ecological conditions induced by rock tunneling in Laoshan Mountain area

LI Xiaozhao, ZHAO Xiaobao, WANG Zhongsheng

Journal Article

Suspended solid abatement in a conical fluidized bed flocculator

Dandan ZHOU, Shuangshi DONG, Keyu LI, Huizhong JIANG, Dandan SHANG

Journal Article

What have we known so far about microplastics in drinking water treatment? A timely review

Journal Article

Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Journal Article

Influence of initial curing conditions and exposure environments on chloride migration in concrete using

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Journal Article

Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Journal Article

Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Journal Article

Performance design of a cryogenic air separation unit for variable working conditions using the lumped

Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN

Journal Article

Identification of structural parameters and boundary conditions using a minimum number of measurement

Ali KARIMPOUR, Salam RAHMATALLA

Journal Article

of preozonation on the bioactivity and biodiversity of subsequent biofilters under low temperature conditions—A

Jiaxuan YANG, Jun MA, Dan SONG, Xuedong ZHAI, Xiujuan KONG

Journal Article