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Field study on the dynamic characteristics of sewage collection in a circular aquaculture tank

文献类型： 外文期刊

作者： Wu, Yanfei 1 ; Gui, Fukun 2 ; Yang, Jianxin 3 ; Qi, Hongfang 3 ; Zhang, Hong 3 ; Wang, Yang 3 ; Feng, Dejun 2 ; Zhang, Qingjing 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing Key Lab Fishery Biotechnol, Beijing 100068, Peoples R China

2.Zhejiang Ocean Univ, Natl Engn Res Ctr Marine Aquaculture, Zhoushan 316022, Peoples R China

3.Rescue & Rehabil Ctr Naked Carps Qinghai Lake, Qinghai Key Lab Qinghai Lake Naked Carps Breeding, Xining 810016, Peoples R China

关键词： Circular aquaculture tank; Field study; Hydrodynamics; Inlet; Sewage collection

期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.4； 五年影响因子：2.7 ）

ISSN： 0967-6120

年卷期： 2025 年 33 卷 1 期

页码：

收录情况： SCI

摘要： To address the low sewage collection performance in circular aquaculture tanks, this paper systematically investigates the influence of jet pipe flow rate Q, the deployment distance ratio d/r (where d represents the distance between the midpoint of the axis and the nearest tank wall, and r is the radius of the circular aquaculture tank), the deployment angle theta, and the structure of the jet pipe on the dynamic characteristics of sewage collection. In the field study, a high-definition camera was used to record the distribution of sewage, the distribution of the flow field in the aquaculture tank was measured by the Acoustic Doppler Velocimetry, and the distance between the sewage and the center of the tank was quantified. Furthermore, the sewage collection performance of the aquaculture tank was evaluated by comparing the maximum distance between the sewage and the center of the tank under different working conditions. The results indicated that the formation of an effective horizontal circulation in the circular aquaculture tank is the primary condition for sewage accumulation to the center of the tank, while different flow rate Q of the jet pipe, the deployment distance ratio d/r, the deployment angle theta, and the structure of the jet pipe all can affect the sewage collection effect in the tank. In the horizontal single-pipe single-hole jet pipe structure mode, the best sewage collection result was obtained at the deployment angle theta of 0 degrees, the deployment distance ratio of 1/4, and the deployment flow rate Q of 7 L/s; when the deployment flow rate Q was less than 7 L/s, the sewage accumulated near the tank wall, and the sewage particle dispersion was relatively high. In the vertical single-pipe porous jet pipe structure mode, better sewage collection performance was achieved when the deployment flow rate Q was adjusted to 7 similar to 9 L/s, the deployment angle theta was set to 45 degrees, and the deployment distance ratio d/r was set to 1/4. The sewage collection performance of the aquaculture tank under the vertical single-pipe porous jet pipe deployment mode was obviously better than that of the horizontal single-pipe single-hole jet pipe mode. These results can directly and effectively guide the inlet design of such aquaculture tanks to reduce the flow rate and energy consumption and improve sewage collection performance.

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