The double blowdown ecological capture chassis combines the blowdown and water circulation functions efficiently. One kind of equipment can complete the task of two kinds of traditional equipment, and the two pipelines of blowdown and water circulation can be effectively separated without mutual interference, which reduces the cost of equipment procurement and reduces the pressure of subsequent water treatment process.
The diameter of the central vertical pipe is large, which is used for the exchange of water in the aquaculture pool and connected with the main return water pipe; the diameter of the side pipe is small, which is used to collect and discharge the residual bait feces, and connected with the solid-liquid separator, which can quickly separate the circulating water and the residual bait feces, greatly reducing the energy consumption of backwashing of the microfilter and the nitrification reaction load of the biofilter.