Whirling System of Water Exchange in Breeding Pools

Q4 Environmental Science
Karolina Matej, Iwona Pawliczka, J. Sawicki, P. Wielgat, P. Zima
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引用次数: 1

Abstract

Abstract To create proper living conditions for sea mammals kept in closed systems, one has to make sure that the characteristics of breeding pools, such as their shape, dimensions, the facing of the walls and bottom, as well as the quality and motion of water, resemble as closely as possible the natural environment of the animals. An appropriate system of water exchange plays a very important role here. A complete exchange of water is time-consuming, expensive and troublesome, so it can be performed only periodically and should be supported by a supplementary continuous exchange. This operation improves water quality and can create a proper velocity field in breeding pools. The breeding pools investigated in the present study are located in a sealarium in Hel (Poland), which belongs to the Institute of Oceanography of the Gdansk University. Tracer measurements, carried out in these reservoirs made it possible to evaluate the intensity of continuous water exchange. It was found that this intensity was insufficient (as evidenced by large dead zones in the pools and short detention time), and therefore alterations to the existing system were proposed (i.e. a tangential position of the inlet and a centrally situated outlet). On the basis of a simplified model of circulative water flow, it was shown that the altered hydraulic system can considerably improve the situation.
养殖池水交换的旋转系统
为了给封闭系统中的海洋哺乳动物创造适宜的生存条件,必须确保繁殖池的形状、尺寸、池壁和池底的朝向以及水的质量和运动等特征尽可能接近动物的自然环境。一个适当的水交换系统在这里起着非常重要的作用。一次完全的水交换是费时、昂贵和麻烦的,因此只能定期进行,并应辅以一次补充的连续交换。该操作改善了养殖池的水质,并能在养殖池中形成适当的流速场。本研究调查的繁殖池位于赫尔(波兰)的一个海洋水族馆,该水族馆属于格但斯克大学海洋学研究所。在这些储层中进行的示踪测量使得评估连续水交换的强度成为可能。结果发现,这种强度是不够的(从水池中较大的死区和较短的滞留时间可以看出),因此建议对现有系统进行改变(即入口的切向位置和位于中心的出口)。在简化的循环水流模型的基础上,表明改变后的液压系统可以显著改善这一状况。
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来源期刊
Archives of Hydroengineering and Environmental Mechanics
Archives of Hydroengineering and Environmental Mechanics Environmental Science-Water Science and Technology
CiteScore
1.30
自引率
0.00%
发文量
4
期刊介绍: Archives of Hydro-Engineering and Environmental Mechanics cover the broad area of disciplines related to hydro-engineering, including: hydrodynamics and hydraulics of inlands and sea waters, hydrology, hydroelasticity, ground-water hydraulics, water contamination, coastal engineering, geotechnical engineering, geomechanics, structural mechanics, etc. The main objective of Archives of Hydro-Engineering and Environmental Mechanics is to provide an up-to-date reference to the engineers and scientists engaged in the applications of mechanics to the analysis of various phenomena appearing in the natural environment.
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