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中国农学通报

中国农学通报 ›› 2019, Vol. 35 ›› Issue (9): 138-142.doi: 10.11924/j.issn.1000-6850.casb18090064

所属专题： 水产渔业

• 水产 渔业 • 上一篇    下一篇

电解铜离子浓度对循环水养殖系统杀菌效果的影响

单建军, 管崇武, 张成林, 张宇雷, 吴凡   

  1. 中国水产科学研究院渔业机械仪器研究所
  • 收稿日期:2018-09-14 修回日期:2018-12-11 接受日期:2018-12-20 出版日期:2019-03-26 发布日期:2019-03-26
  • 通讯作者: 管崇武
  • 基金资助:
    中国水产科学研究院渔业机械仪器研究所基本科研业务费专项“电化学法铜离子杀菌技术研究”(2017YJS0010)；，现代农业产业技术体系 建设专项资金“海水鱼体系养殖设施与装备岗位”(CARS-47-G20)。

The Concentration of Cu2+: Effects on Germicidal Efficacy in Recirculating Aquaculture System

  • Received:2018-09-14 Revised:2018-12-11 Accepted:2018-12-20 Online:2019-03-26 Published:2019-03-26

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摘要： 【研究目的】本文旨在研究循环水养殖系统中铜离子浓度对系统净化效能的影响；【方法】通过在循环水养殖系统中利用铜离子发生器添加铜离子，监测水质和斑马鱼健康状况，评价杀菌效果；【结果】铜离子发生器的铜离子增加速度R2=0.9942，稳定性较好。在24 h时，斑马鱼在铜离子浓度达到0.76 mg/L时，出现死亡情况；另外在同一浓度范围内，温度越低，斑马鱼对铜离子的耐受度越高，同一温度下，铜离子浓度越大，斑马鱼死亡速度越快。在安全浓度范围内（Cu2 +为0~0.23 mg/L），(26±2)℃为事宜养殖温度，并且0.14~0.226 mg/L范围内的铜离子浓度能有效地抑制细菌生长。最后本研究利用斑马鱼进行20天的养殖验证试验，随着铜离子浓度增加，硝酸盐、亚硝酸盐、总氨氮的变化趋势较为一致；【结论】铜离子浓度在0.1~0.2 mg/L之间，养殖温度(26±2)℃时，硝酸盐、亚硝酸盐、总氨氮、细菌总数处于平稳状态，有利于斑马鱼生长。

Abstract: The paper aims to study the effects of concentration of Cu2+ in the recirculating aquaculture system on the purification efficiency of the system. Adding Cu2+ through the generator in the recirculating aquaculture system, we evaluated the germicidal efficacy by monitoring water quality and the health of zebrafish. The results showed that: the increase speed R2 of Cu2+ in the generator was 0.9942 with better stability; after 24 h, when the concentration of Cu2 + got to 0.76 mg/L, the zebrafish began to die; in the same concentration, the lower the temperature, the higher the zebrafish’s tolerance to Cu2 + ; in the same temperature, the zebrafish could die faster with the increasing concentration of Cu2+; in the safe concentration (the concentration of Cu2+ was 0-0.23 mg/L), the suitable breeding temperature was (26±2)℃ and the Cu2 + could inhibit the bacteria effectively when the concentration was 0.14-0.226 mg/L. We make a 20-day zebrafish fishing test to verify the results, the concentration of nitrate nitrogen, nitrite nitrogen, TAN change similarly when the concentration of Cu2 + get higher; the concentration of nitrate nitrogen, nitrate nitrogen, TAN and the total number of bacteria keep in a stable state when the concentration of Cu2+ is 0.1-0.2 mg/L and the breeding temperature is (26±2)℃, and this condition is beneficial for the growth of zebrafish.