Aquatic product ecological circulation method without wastewater discharge

Abstract

The invention relates to the technical field of sewage treatment in the aquatic product industry, in particular to an aquatic product ecological circulation method without wastewater discharge. A circulation system comprises a reservoir, a culture pond, a first-stage reaction pond and a second-stage reaction pond which are connected in series to form a loop, the reservoir is communicated with a self-purification pond through a water inlet pipe and a water outlet pipe, the self-purification pond is communicated with an ecological biological water purification pond through a pipeline, and a heatabsorption, heat preservation and ventilation film is arranged at the top of the ecological biological water purification pond. The circulation system actually comprises two sets of circulation subsystems, wherein one is physical and chemical filtration of circulating filtration formed by the reservoir, the culture pond, the first-stage reaction pond and the second-stage reaction pond, and the other one is biological self-purification filtration formed by the self-purification pond and the ecological biological water purification pond. The two subsystems operate in a crossed manner and do notinterfere with each other, and bait residues and biological corpses are removed through biological filtration, so that impurities in internal circulation are reduced, and the filtration burden is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment in the aquatic industry, in particular to an aquatic ecological cycle method without wastewater discharge. Background technique [0002] In the industrialized intensive aquaculture production, the recycling treatment of water body is the focus and difficulty. Some enterprises even put forward the high-end standard of no wastewater discharge. For example, a Chinese patent discloses an intermittent industrialized circulating aquaculture method, patent number 201811005939.1, which records: to realize the biochemical reaction of aquaculture water of different water quality, after the aquaculture water purified in the secondary reaction tank is discharged, the primary reaction The pool still maintains biochemical reactions, cultivating enough microorganisms for the next cycle, increasing the treatment time of the primary treatment pool, improving the utilization efficiency of microorganisms to...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned technical solutions and the existing technologies are difficult to eliminate harmful substances such as aquatic corpses, dead eggs, feed fragments, and microbial corpses that will inevitably appear in the water body. After long-term filtration, harmful substances will become more and more difficult to eliminate.