基于CFD的废水厌氧处理系统布水形式数值模拟

Abstract
Figure/Table
References
Related Citation (6)

Download: PDF (1856 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to explore how to improve the effect of anaerobic wastewater treatment systems, as anaerobic system two different forms of water distribution a model, using CFD numerical simulation techniques to simulate, this paper analyzes the relationship between the different forms of water distribution and the flow rate and the impact on mass transfer effects.Research conclusions:(1) The impacts of two different water distribution forms on the reaction of the whole system are quite different. (2) At the same speed, the simulation results show that the reactor of water distribution in the form of perforated pipe can effectively alleviate the interference of phenomena of density flow, which is more conducive to the internal mass transfer. (3) The results of two different speed status show that, however the speed changes, the turbulence law in the system has little change for divergent trumpet. (4) Improving the flow rate, for the perforated pipe, not only increased the fluid turbulence degree of the fluid at the inlet, but also improved the overall disturbance of internal fluid, and thus it is very favorable for the sewage treatment. (5) Using simulation technology derived the conclusion from the velocity and water distribution form that water distribution in the form of perforated pipe is beneficial for mixing of internal wastewater and microbes of the unpowered anaerobic wastewater system, more conducive to improve the effect of water treatment. (6) The conclusion can provide a reference for the design of water distribution form of unpowered anaerobic reactor.

Key words： water distribution form numerical simulation density flow turbulence reference

Received: 10 March 2014

PACS:

X703.3

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Yi-long
	ZHAI Ji-hong
	MA Min-jie

Cite this article:

ZHANG Yi-long,ZHAI Ji-hong,MA Min-jie. Numerical Simulation of Anaerobic Wastewater Treatment System Distribution Based on CFD[J]. 铁道工程, 2014, 31(10): 98-102.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2014/V31/I10/98

[1] 王福军. 计算流体动力学分析——CFD软件原理与应用[J]. 北京:清华大学出版社,2004.
Wang Fujun. Computational Fluid Dynamics Analysis——CFD Software Principles and Applications[J]. Beijing: Tsinghua University Press, 2004.
[2] 蔡金傍,段祥宝,朱亮.沉淀池水流数值模拟[J].重庆建筑大学学报,2003(4):64-69.
Cai Jinbang, Duan Xiangbao, Zhu Liang. Numerical Simulation of Flow in Sedimentation Tanks[J]. Journal of Chongqing Jianzhu University, 2003(4):64-69.
[3] 詹咏,吴文权,王惠民. 沉淀池中的异重流运动特性[J].中国给水排水,2003(1):43-45.
Zhan Yong, Wu Wenquan, Wang Huimin. Density Current Motion Characteristics of the Settling Tank[J]. China Water & Wastewater, 2003(1):43-45.
[4] 雷晓玲,方小桃,刘贤斌,等. 给水厂高密度沉淀池沉淀区流态模拟及优化设计[J]. 中国给水排水,2011(3):52-55.
Lei Xiaoling, Fang Xiaotao, Liu Xianbin, etc. Simulation and Optimization of Flow Pattern in High Density Settler of Water Treatment Plant[J]. China Water & Wastewater, 2011(3):52-55.
[5] 张自杰. 排水工程[M]. 北京:中国建筑工业出版社,2000.
Zhang Zijie. Wastewater Engineering[M]. Beijing: China Architecture & Building Press, 2000.
[6] Orlandi P, Leonardi S, Tuzi R, et al. Direct Numerical Nimulation of Turbulent Channel Flow with Wall Velocity Disturbances[J]. Physics of Fluids, 2003(12):3587-3601.
[7] 张伟,郭春梅,张志刚,等. CFD在曝气沉砂池集气罩通风设计中的应用[J].中国给水排水,2006(7):97-100.
Zhang Wei, Guo Chunmei, Zhang Zhigang, etc. Application of CFD in Ventilation Design of Gas-collecting Hood of Aerated Grit Chamber[J]. China Water & Wastewater, 2006(7):97-100.
[8] Deininger A,Gunther F W,Wilderer P A.The Influence of Currents on Circular Secondary Clarifier Performance and Design[J].Water Sci Technol,1996(34):405-412.
[9] 顾正平. 周边式二次沉淀池流态的计算模拟的数值研究方法[J]. 环境科学研究,1995(3):50-52.
Gu Zhengping. A New Computer Simulation Method for Flow Pattern of Peripheral Feed-Peripheral Effluent Secondary Clarifier[J]. Research of Environmental Sciences, 1995(3):50-52.
[10]Yakhot V, Smith L M. The Renormalization Group the Expansion and Derivation of Turbulence Models[J]. Journal of Science Computing,1992(1):31-52.
[11]张兆杰,高波,王英学. 基于Fluent二次开发研究高速列车通过隧道时的瞬变压力[J]. 铁道工程学报,2005(6):41-44.
Zhang Zhaojie, Gao Bo, Wang Yingxue. Analysis of Transient Pressure Induced by High-speed Train Passing a Tunnel Based on the Second Development of Fluent[J]. Journal of Railway Engineering Society,2005(6):41-44.