[1]董 鑫,李永强,曾 倩,等.微曝氧化沟气泡羽流氧输运特性研究[J].常州大学学报(自然科学版),2019,31(02):19-28.[doi:10.3969/j.issn.2095-0411.2019.02.003]
　DONG Xin,LI Yongqiang,ZENG Qian,et al.Research on Oxygen Transfer Characteristics of Bubble Plumes in Micro-Oxidation Ditch[J].Journal of Changzhou University(Natural Science Edition),2019,31(02):19-28.[doi:10.3969/j.issn.2095-0411.2019.02.003]
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微曝氧化沟气泡羽流氧输运特性研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年02期
页码:
19-28
栏目:
机械制造及其自动化
出版日期:
2019-03-28

文章信息/Info

Title:
Research on Oxygen Transfer Characteristics of Bubble Plumes in Micro-Oxidation Ditch
文章编号:
2095-0411(2019)02-0019-08
作者:
董 鑫; 李永强; 曾 倩; 刘凤霞; 刘志军; 许晓飞
(大连理工大学 化工机械与安全学院,辽宁 大连 116024)
Author(s):
DONG Xin;  LI Yongqiang;  ZENG Qian;  LIU Fengxia;  LIU Zhijun;  XU Xiaofei
(School of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian 116024, China)
关键词:
气泡羽流;  氧传质;  曝气充氧性能;  动力效率;  优化工况
Keywords:
bubble plume;  oxygen mass transfer;  aeration performance;  dynamic efficiency;  optimum operating conditions
分类号:
X 703.3
DOI:
10.3969/j.issn.2095-0411.2019.02.003
文献标志码:
A
摘要:
氧化沟工艺中曝气装置是耗能最大的部分,为达到节能降耗的目的,以清水为液相环境,对微曝氧化沟内充氧性能进行实验研究。基于氧传质理论,研究微曝氧化沟复杂流动条件下气泡羽流氧传质过程,分析曝气量、横向推流强度和曝气器布置方式对曝气充氧性能的影响,得出最优实验工况。横向流动可提高氧体积传质系数; 均匀布置微孔曝气器可使增氧能力提高35%。综合考虑体积传质系数和系统动力效率,获得最优实验工况,为实现氧化沟工艺的节能降耗和优化运行提供理论依据。
Abstract:
Aerator is the largest part of the energy consumption of oxidation ditch. In order to reach the goal of saving energy and reducing consumption, in this study a series of experimental studies on aeration and oxygenation performance were conducted in tap water. Based on the theoretical model of oxygen mass transfer, the influence of operating conditions such as aeration rate, the arrangement of aerators and the strength of lateral flow on mass transfer were investigated. The oxygen mass transfer coefficient increased when there exists transverse flow in the ditch, but the system power efficiency was not positively related to transverse flow. The oxygenation capacity increased 35% using uniform arrangement of the micro-pore aerator. With the increase of aeration rate, oxygen volume mass transfer coefficient increased, but the changes in oxygen utilization rate behaved opposite. Combining with the volumetic mass transfer coefficient and the dynamic efficiency of the system, the research on oxygen transport performance of micro-porous aerator can provide theoretical basis for the purpose of saving energy and reducing consumption and optimizing operation conditions.

参考文献/References:


[1] BENEFIELD L D, RANDALL C W. Biological process design for wastewater treatment[M]. New Jersey: Prentice Hall,1980.
[2]MAKINIA J, BELL B A. Oxidation ditches in wastewater treatment [M]. California: Ann Arbor Science Publishers, 1984.
[3]陈旭露,王洪臣,齐鲁,等.阴离子表面活性剂对微孔曝气氧传质过程影响的研究[J].环境科学学报,2013,33(2):395-400.
[4]GUDE V G.Energy and water autarky of wastewater treatment and power generation systems[J].Renewable and Sustainable Energy Reviews,2015,45:52-68.
[5]范笼,陈大方,王志强,等.Carrousel氧化沟的流动特性研究[J].环境污染治理技术与设备,2006,7(12):36-41.
[6]CANCINO B, ROTH P, REUB M.Design of high efficiency surface aerators [J].Aqua Cultural Engineering,2004(31):83-121.
[7]NAKAMACHI K, FUJIWARA T, XIAO Q C, et al. Energy efficiency of full-scale oxidation ditch with dual dissolved oxygen control technology in clean water and domestic wastewater[J].Journal of Water and Environment Technology, 2012,10(3):229-240.
[8]刘春,张磊,杨景亮,等.微气泡曝气中氧传质特性研究[J].环境工程学报,2010(3):585-589.
[9]李小冬,齐鲁,刘国华,等.通气量对微孔曝气器充氧性能影响的中试研究[J],中国给水排水,2014(5):81-84.
[10]MUELLER J A, BOYLE W C, P?PEL H J. Aeration: principles and practice[M]. Boca Raton: CRC Press, 2002.
[11]XIA S B, LIU J X. An innovative integrated oxidation ditch with vertical circle for domestic wastewater treatment [J]. Process Biochemistry,2004,39(9):1111-1117.
[12]刘彦颖.微曝氧化沟工艺在城市污水处理中的运用[J].科技资讯,2011(3):140.
[13]杨亚红,彭党聪,李磊,等.微孔曝气变速氧化沟循环特性的中试研究[J].环境工程学报, 2013(4):1336-1340.
[14]IRANPOUR R, STENSTROM M K. Relationship between oxygen transfer rate and airflow for fine-pore aeration under process conditions [J].Water Environment Research,2001,73(3):266-275.
[15]KRASNYI B L, TARASOVSKII V P, KRASNYI A B, et al. Porous permeable ceramic for fine bubble waste water aeration systems in aeration tanks[J]. Refractories and Industries and Industrial Ceramics,2011,51(5):322-327.

备注/Memo

备注/Memo:
收稿日期:2018-10-04。
基金项目:国家自然科学基金项目(11502046); 教育部留学回国人员科研启动基金项目(第50批); 辽宁省博士科研启动基金项目(201501179)。
作者简介:董鑫(1990—),女,黑龙江哈尔滨人,博士生。通信联系人:许晓飞(1981—),xiaofei.xu@dlut.edu.cn
更新日期/Last Update: 2019-03-30