学术
水产养殖系统中机械增氧与液态氧增氧的效果比较
李玉全[1] 张海艳[1] 李健[2] 王清印[2] 李振东[1]
[1]青岛农业大学,青岛266109 [2]农业部海洋渔业资源可持续利用重点开放实验室,中国水产科学研究院黄海水产研究所,青岛266071
摘 要:
【研究目的】为分析水产养殖系统中机械增氧与液态氧增氧的增氧效果；【方法】设置增氧潜力、溶解氧（DO）扩散速度、水质因子、对虾生长等多个处理组，对比两增氧系统在各方面的差异。【结果】液态氧的增氧潜力是机械增氧的3倍左右，且DO扩散速度快；液态氧增氧系统和机械增氧系统的DO含量、水温、盐度和pH变化趋势相似，且均相对稳定。与机械增氧系统相比，液态氧增氧系统的氨态氮（TAN）、亚硝态氮（N02-N）和可溶性磷（PO4-P）含量变化剧烈；液态氧增氧系统中开启增氧机会在一定程度上降低DO含量。液态氧增氧的运行成本与机械增氧相当；但液态氧增氧的效果稳定，且无噪音、无污染、不受外界气压等环境因素的影响。【结论】液态氧增氧在增氧潜力及增氧速度等多个方面均优于机械增氧。[著者文摘]
文章出处:
《中国农学通报》-2008年24卷2期 -475-480页
栏目信息:
分 类 号:
文献标识码:
A
The Comparison of Aeration Effect Between Air Aeration and Pure Oxygen Aeration Systems in Aquaculture
Li Yuquan, Zhang Haiyan, Li Jian, Wang Qingyin, Li Zhendong （1 Qingdoo Agricultural University, Qingdao 266109; 2 Key Laboratory for Sustainable Utilization for Marine Fisheries Resource, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071）
Abstract:
[OBJECTIVE]In this study, aeration effect of air aeration and liquid pure O2 aeration was analyzed in aquaculture. [METHOD]Several treatments, such as aeration potential, diffusing speed of dissolved oxygen （DO）, water quality factors and shrimp growth, were designed to compare the aeration effect between two systems. [RESULTS]Aeration potential of liquid pure O2 was three times than that of air, and diffusing speed of the former was faster than the later Changes of DO concentration, water temperature, salinity and pH value in liquid pure O2 aeration system were similar with those of air aeration system, however, changes of TAN, NO2-N and PO4-P concentrations in the former were acute than the later. Aerating air in liquid pure O2 system could decrease DO concentration of farming ponds. Run cost of liquid pure O2 aeration was similar with that of air aeration. [CONCLUSION] Liquid pure O2 aeration was better than air aeration on aeration potential and diffusing speed, etc.[著者文摘]
Key words:
liquid pure O2, DO concentration, water quality factors, growth
基金资助:
农业科技跨越计划“对虾工厂化养殖与质量安全控制技术”（2003-5）,国家科技攻关计划项目“无公害水产养殖技术研究与示范”（2004BA52680201）和青岛农业大学人才启动基金项目“对虾工厂化养殖系统分析及养殖废水无害化处理体系探讨”（630628）.
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