Development of an intelligent recirculating water system for land-based sea cucumber aquaculture

  Presently, three fundamental methods are employed for sea cucumber aquaculture: pond culture, dam culture, and submarine seedling culture. However, these methods are susceptible to environmental water quality degradation due to factors such as sea cucumber feces, excessive feed, and climate change, which can impede sea cucumber growth and affect yields.

In order to address the issues outlined above, this study presents the intelligent circulating water system (ICWS), which is composed of a composite low-energy physical liquid-solid separator and a multi-mixed biofilter. A detailed description of these components is provided below.

• Composite Low Energy Physical Liquid-Solid Separator

The liquid-solid separator uses minimal energy because of its innovative composite type. It extracts the contaminant source from the aquatic environment, reducing biofilter bed load and energy demand.

• Multi-mixed Biofilter

The configuration of hybrid arrangement structures increases the specific surface area of the biofilter, leading to a reduction in its volume. The structure controls flow rate, hydraulic residence time, and hydraulic loading, which can be used to regulate temperature, salinity, pH, dissolved oxygen, and ammonia levels. This ensures the provision of high-quality water that meets the needs of sea cucumbers.

The innovative low-energy-consuming water recycling system outlined in this project has the theoretical potential to achieve complete water recycling without the necessity of replenishing the source water. This scenario presents a mutually beneficial opportunity for the sustainable utilization of Earth's water resources and the realm of commercial aquaculture, exhibiting no inherent incompatibility.