Performance comparison of down-flow hanging sponge reactor and moving bed bioreactor for aquaponic systems

Q1 Environmental Science Bioresource Technology Reports Pub Date : 2024-09-22 DOI:10.1016/j.biteb.2024.101963

Limin Teng , Takahiro Watari , Taichi Fujimoto , Naoya Sato , Taito Sato , Yasuaki Enoki , Nur Adlin , Masashi Hatamoto , Takashi Yamaguchi

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Abstract

Aquaponics require high-quality water purification for the high and stable production of fish and vegetables. This study investigated the performance of a down-flow hanging sponge (DHS) reactor and a moving bed bioreactor (MBBR) in an Acipenser ruthenus–Lactuca sativa aquaponic system. At high fish density conditions, the NH₄⁺-N in the DHS-aquaculture tank was maintained as low as 0.38 ± 0.26 mg-N·L⁻¹ compared with the MBBR-aquaculture tank despite an effective volume of one-fifth. Additionally, the DHS-aquaponic system produced greater amounts of lettuce (1075.23 g) and longer plants (21.70 ± 1.36 cm) in comparison to the MBBR system (842.78 g and 17.02 ± 2.2 cm). This study showed that a DHS system effectively reduces ammonium nitrogen concentrations, stabilizes nitrogen levels in water, and enhances the ecological health of hydroponic systems. Therefore, the DHS system not only improves agricultural production efficiency but also promotes sustainable agricultural development.

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下流式悬挂海绵反应器和移动床生物反应器在水生植物栽培系统中的性能比较

鱼菜共生需要高质量的水净化，以实现鱼类和蔬菜的高产稳产。本研究调查了下流式悬挂海绵（DHS）反应器和移动床生物反应器（MBBR）在如意鱼-莴苣鱼菜共生系统中的性能。在高密度养鱼条件下，DHS-水产养殖池中的 NH4+-N 保持在 0.38 ± 0.26 mg-N-L-1 的低水平，而 MBBR-水产养殖池中的 NH4+-N 只有其有效容积的五分之一。此外，与 MBBR 系统（842.78 克和 17.02 ± 2.2 厘米）相比，DHS-水培系统生产的生菜量更大（1075.23 克），植株更长（21.70 ± 1.36 厘米）。这项研究表明，DHS 系统能有效降低铵态氮浓度，稳定水中的氮含量，提高水培系统的生态健康水平。因此，DHS 系统不仅能提高农业生产效率，还能促进农业可持续发展。

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