A potential zero water exchange system for recirculating aquarium using a DHS-USB system coupled with ozone
A potential zero water exchange system for recirculating aquarium using a DHS-USB system coupled with ozone
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使用 DHS-USB 系统与臭氧结合的潜在零水交换系统，用于再循环水族箱
DOI：
10.1080/09593330.2020.1784295
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Takashi Yamaguchi
中科院分区：
文献类型：
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作者：
Nur Adlin;Masashi Hatamoto;Shinichi Yamazaki;Takahiro Watari;Takashi Yamaguchi
部分水交换是循环水族箱系统中最常用的保持水质和美观的常规方法之一。然而，该方法使用大量的水。臭氧下降流挂海绵上升流污泥毯（臭氧DHS USB）系统试图成为一个更负责任的方法水族馆的维护。它通过将氮浓度保持在安全水平并减少黄色物质，消除了水族馆中水交换的必要性。此外，O3对DHS-USB系统的影响进行了研究。使用受23°C至34°C范围内的环境温度影响的现场淡水水族箱对系统进行测定。在臭氧化阶段1和3期间，水族馆中的水的颜色成功地保持在10个颜色单位以下。DHS中微生物的16 S rRNA基因分析表明，O3的持续应用导致亚硝酸盐氧化细菌（NOB）的减少。尽管如此，NH3和NH 4维持在0.1 mg N L−1以内，并且在整个研究期间维持在14.6 ± 9.20 mg N L− 1。 鲤鱼在没有进行任何水交换的情况下存活了425天。我们的研究支持臭氧-DHS-USB系统具有创建低维护水族馆的高潜力。
Partial water exchange is one of the most common conventional methods used to maintain water quality and aesthetic beauty in recirculating aquarium systems (RASs). However, this method uses substantial amount of water. The ozone-down-flow hanging sponge-up-flow sludge blanket (ozone-DHS-USB) system attempts to be a more responsible method for aquarium maintenance. It eliminates the necessity for water exchange in aquarium by maintaining nitrogen concentrations at a safe level and by reducing yellow substances. Also, the impact of O3on the DHS-USB system was investigated. The system was assayed using an on-site freshwater aquarium influenced by ambient temperature ranging from 23°C to 34°C. During ozonation Phases 1 and 3, the colour of the water in the aquarium was successfully maintained below 10 colour units. The 16S rRNA gene analysis of microorganisms in the DHS revealed that constant application of O3has caused a decrease in nitrite-oxidizing bacteria (NOB). Nevertheless, NH3andwere maintained within 0.1 mg N L−1, andwas maintained at 14.6 ± 9.20 mg N L−1throughout the study. Carps survived for 425 days without any water exchange performed. Our study supports that the ozone-DHS-USB system has a high potential towards creating low-maintenance aquaria.