Effects of different layouts of fine-pore aeration tubes on sewage collection and aeration in rectangular water tanks

doi:10.1016/j.aquaeng.2020.102060

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	Effects of different layouts of fine-pore aeration tubes on sewage collection and aeration in rectangular water tanks
	Du, Yishuai 2,3; Chen, Fudi 1,2,3; Zhou, Li 2,3; Qiu, Tianlong 2,3; Sun, Jianming 2,3
刊名	AQUACULTURAL ENGINEERING
	2020-05-01
卷号	89 页码:9
关键词	Aeration tube Layout Oxygen transfer Sewage collection Rectangular tank Computational fluid dynamics
ISSN号	0144-8609
DOI	10.1016/j.aquaeng.2020.102060
通讯作者	Sun, Jianming(sjmqd@qdio.ac.cn)
英文摘要	Sewage collection and dissolved oxygen (DO) management have always been the focus of industrialized recirculating aquaculture. However, there are still no reports on how to achieve efficient sewage collection and increase DO in rectangular water tanks. In the present study, the performance of sewage collection and aeration in rectangular water tanks were compared among three fine-pore aeration tubes (disc-type diffuser, four corner-type diffuser and distribute-type diffuser) layouts at three airflow rates, 6, 18, and 30 m(3)/h. The results of computational fluid dynamics (CFD) modeling and bait collection tests revealed that sewage collection using the four corner-type diffuser was better than using the disc-type diffuser and the distribute-type diffuser. Using the four corner-type diffuser, a strip-shaped sewage collector could be set up at the bottom of the tank to collect sewage at an airflow rate of 18 m(3)/h and a disc-shaped sewage collector could be set up at the bottom of the tank to collect sewage at an air flow rate of 30 m(3)/h. In terms of aeration, volumetric oxygen transfer coefficient (K(L)a(20)), standard oxygen transfer rate (SOTR), and standard oxygen transfer efficiency (SOTE) of the distributetype diffuser were all the highest at the three airflow rates, followed by four corner-type diffuser, and finally the disc-type diffuser, indicating that the aeration performance in the distribute-type diffuser was optimal. However, there were no significant differences in K(L)a(20), SOTR, and SOTE between the four corner-type diffuser and the distribute-type diffuser at both 18 and 30 m(3)/h airflow rates. Therefore, four corner-type diffusers were the optimal choice for recirculating aquaculture, considering the sewage collection and aeration requirements. The results of the present offer novel insights on the application of CFD in recirculating aquaculture, in addition to basic data and theoretical guidance on how to achieve efficient sewage collection and aeration in recirculating aquaculture.
资助项目	National Key R&D Program of China[2017YFD0701703] ; Key Research and Development Program of Shandong Province[2019GHY112004]
WOS研究方向	Agriculture ; Fisheries
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000550135600015
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/167936]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Sun, Jianming
作者单位	1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, 7 Nanhai RD, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai RD, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Du, Yishuai,Chen, Fudi,Zhou, Li,et al. Effects of different layouts of fine-pore aeration tubes on sewage collection and aeration in rectangular water tanks[J]. AQUACULTURAL ENGINEERING,2020,89:9.
APA	Du, Yishuai,Chen, Fudi,Zhou, Li,Qiu, Tianlong,&Sun, Jianming.(2020).Effects of different layouts of fine-pore aeration tubes on sewage collection and aeration in rectangular water tanks.AQUACULTURAL ENGINEERING,89,9.
MLA	Du, Yishuai,et al."Effects of different layouts of fine-pore aeration tubes on sewage collection and aeration in rectangular water tanks".AQUACULTURAL ENGINEERING 89(2020):9.