Hydrodynamics research of wastewater treatment bioreactors
REN Nan-qi1, ZHANG Bing1, ZHOU Xue-fei2
1.School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China;2.State Key Laboratory of Pollution Control and Resource Reuse Research,Tongji University,Shanghai 200092,China
Abstract:
To optimize the design and improve the performance of wastewater treatment bioreactors,the review concerning the hydrodynamics explored by theoretical equations,process experiments,modeling of the hydrodynamics and flow field measurement is presented. Results of different kinds of experiments show that the hydrodynamic characteristics can affect sludge characteristics,mass transfer and reactor performance significantly. Along with the development of theoretical equations,turbulence models including large eddy simulation models and Reynolds-averaged Navier-Stokes (RANS) models are widely used at present. Standard and modified k-ε models are the most widely used eddy viscosity turbulence models for simulating flows in bioreactors. Numerical simulation of hydrodynamics is proved to be efficient for optimizing design and operation. The development of measurement techniques with high accuracy and low intrusion enables the flow filed in the bioreactors to be transparent. Integration of both numerical simulation and experimental measurement can describe the hydrodynamics very well.
Key words: wastewater treatment bioreactor hydrodynamics simulation measurement technique
DOI：10.11916/j.issn.1005-9113.2009.03.003
Clc Number:X703
Fund:
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Hydrodynamics research of wastewater treatment bioreactors
本站小编 哈尔滨工业大学/2019-10-23
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