Freshwater aquaculture tail water biological comprehensive purification system

Abstract

The invention relates to a freshwater aquaculture tail water biological comprehensive purification system, and aims to fill the blank of the prior art. The system comprises a comprehensive purification water tank, which is rectangular, wherein a water inlet is formed in one end of the tank, a water outlet is formed in the other end of the tank, the comprehensive purification water tank is sequentially provided with a primary sedimentation tank, a submerged plant treatment area, a filter-feeding fish culture area and a biological floating island treatment area from the water inlet to the wateroutlet, an aeration area is arranged between the water inlet of the comprehensive purification water tank and a primary sedimentation area, an aeration pipe is arranged at the bottom of the aeration area, a through hole is formed in the aeration pipe, the aeration pipe is communicated with an outlet of a matched air pump through a valve, lotus roots are planted at the bottom in the primary sedimentation area, submerged partition walls are built on the front side and the rear side of the submerged plant treatment area respectively, submerged plant pruning devices are arranged, and the upper surfaces of the submerged partition walls are 5-10 cm away from the water surface. The system is simple in structure, good in purification effect, reliable in operation, not prone to smelly water and suitable for purification treatment of aquaculture water and reclaimed water.

Description

technical field [0001] The invention relates to a biological comprehensive purification system for freshwater aquaculture tail water. Background technique [0002] The Chinese invention patent application published on April 20, 2018 with the publication number CN 107935296A discloses an ecological treatment system and method for aquaculture wastewater. The system includes filter-feeding fish culture ponds, primary filter ponds, Biological floating island treatment pool, secondary filter pool and submerged plant treatment pool; the primary filter pool and the secondary filter pool are filled with volcanic rocks, plants are planted on the upper surface of the volcanic rocks, and microbial strains are placed in the lower part. This patent document points out that submerged plants include hornwort and other submerged plants that have the function of purifying water bodies. [0003] As we all know: Hydrilla versicolor, hornwort, and Elodea have good adaptability and strong regen...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is how to fill the above-mentioned gaps in the prior art, and provide a cutting process that has little disturbance to the submerged plants. Freshwater aquaculture tail water bio-comprehensive purification system with less damage and less rotten smelly water

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