超微气泡技术在对虾室内养殖中的初步应用

Primary application of Micro-Nano-Bubble technology in indoor shrimps aquaculture

为了探究超微气泡技术在水产养殖应用的安全性和可行性,在小型凡纳滨对虾(Litopenaeus vannamei)养殖生态系统中,以常规鼓风充气作为对照组,应用超微气泡发生装置,研究对比其在对虾养殖过程中的增氧效果、水体相关理化和生物因子的响应及对虾生长情况。结果显示:超微气泡能有效地提高水体中溶氧质量浓度,并使之维持更长的时间;与常规充气相比,在超微气泡技术条件下,养殖水体溶氧质量浓度平均高出7.66%,差异显著(P<0.05);超微气泡能加快养殖水体颗粒物的降解,并对浮游植物的优势种结构产生影响;对虾在两种充气方式下,生长率和存活率都没有明显差异。研究表明:超微气泡技术对提高养殖水体溶氧的效果显著,在对虾养殖中应用是可行的;超微气泡技术为水产养殖新装备的研究应用提供了一条新思路。

The research aims to study the safety and the feasibility of application of Micro-Nano-Bubblestechnology in aquaculture. Micro-Nano-Bubbles generating devices were applied in culture ecosystem of Litopenaeus vannamei,with air blower as control, to comparative study the changes of dissolved oxygen, the physicochemical and biological response and the growth of Litopenaeus vannamei. The result showed that Micro-Nano-Bubbles can effectively improve the concentration of dissolved oxygen in water and maintain it for a longer time. The average concentration of DO was 7. 76% higher in Micro-Nano-Bubbles condition than in air blower with significant difference （P〈0. 05）. Micro-Nano-Bubbles can improve the degradation of organic matter in aquaculture and affect the phytoplankton structure of dominant species. There was no significant difference between the growth and survival rate of shrimps under the two inflatable conditions. The study shows that the nano-bubble technology has a more pronounced effect in improving the dissolved oxygen in aquaculture water,and feasible to be applied in shrimp culture. The Micro-Nano-Bubbles technology provides a new idea for the application of new devices for aquaculture.