TY - JOUR
T1 - Optimization of mechanical accelerated clarifier based on numerical simulation of flow field
AU - Xu, Ying
AU - Wang, Cunteng
AU - Wu, Yuebin
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The paper is financially supported by the Foundation for Distinguished Young Talents in Higher Education of Heilongjiang, China (UNPYSCT-2015072) and National Natural Science Fund of China (No. 51208160).
Publisher Copyright:
© The Author(s) 2017.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - In this article, the numerical simulation of a mechanical mixing process typical of that in water treatment has been performed and optimization of process parameters is achieved. First, the prediction capability of the numerical calculation method is verified through laboratory experiments. Then, the index of turbulence intensity and mixing effect is presented. Finally, optimization of design and operational parameters is carried out based on the maximization of two indices while minimizing power consumption in an actual water treatment plant. The results have shown that the nature of the flow field has a strong influence on the mixing effect. Moreover, the index of turbulence intensity and mixing effect was shown to provide a feasible approach to the optimization of design and operational parameters. For the mechanical accelerated clarifier in the actual water treatment plant, the optimal paddle diameter, submerged depth, and rotational speed were 0.8 m, 1.25 m, and 40 r/min, respectively.
AB - In this article, the numerical simulation of a mechanical mixing process typical of that in water treatment has been performed and optimization of process parameters is achieved. First, the prediction capability of the numerical calculation method is verified through laboratory experiments. Then, the index of turbulence intensity and mixing effect is presented. Finally, optimization of design and operational parameters is carried out based on the maximization of two indices while minimizing power consumption in an actual water treatment plant. The results have shown that the nature of the flow field has a strong influence on the mixing effect. Moreover, the index of turbulence intensity and mixing effect was shown to provide a feasible approach to the optimization of design and operational parameters. For the mechanical accelerated clarifier in the actual water treatment plant, the optimal paddle diameter, submerged depth, and rotational speed were 0.8 m, 1.25 m, and 40 r/min, respectively.
KW - Mechanical accelerated clarifier
KW - mixing effect
KW - turbulence intensity
KW - turbulence numerical simulation
KW - water treatment process
UR - http://www.scopus.com/inward/record.url?scp=85030245188&partnerID=8YFLogxK
U2 - 10.1177/1687814017720881
DO - 10.1177/1687814017720881
M3 - Journal article
AN - SCOPUS:85030245188
SN - 1687-8132
VL - 9
SP - 1
EP - 10
JO - Advances in Mechanical Engineering
JF - Advances in Mechanical Engineering
IS - 9
ER -