Construction process of fish and vegetable mode

Abstract

The invention relates to a construction process of fish and vegetable mode. In a fish pond water circulation mode, a water inlet valve of a vegetable pond is closed, and all drained water of the fish pond directly enters a microfiltration machine to be filtered after passing through a vertical flow precipitator; the water filtered by the microfiltration machine is sequentially subjected to moving bed biological evolution, degassing, ultraviolet disinfection and immobilized microorganism reverse leading and then returns to the fish pond; in the water circulation mode of the fish pond and the vegetable pond, the fish pond is adjusted through a water level adjuster, and water with the circulation amount of 10%-30% is promoted to enter the vertical flow precipitator through a lower water outlet; a water outlet of the vertical flow precipitator is connected with the microfiltration machine, and a precipitate drain outlet is connected with the vegetable pond; when the water demand of the vegetable pond is smaller than the water discharge of the fish pond, redundant filtered water overflows into the microfiltration machine through an upper part; bottom blow-down sewage treated by the microfiltration machine and supernatant of the fish pond are converged in an adjusting pond and then are sequentially connected with at least two stages of moving beds; and degassing, ultraviolet disinfection and immobilized microorganism reverse leading are sequentially conducted and then the treated liquid is returned to the fish pond.

Description

technical field [0001] The invention relates to a construction process of a fish and vegetable model, and belongs to the technical field of fish and vegetable symbiotic cultivation. Background technique [0002] The traditional aquaponics symbiosis has different nutritional requirements and pH requirements, which requires a compromise between the fish and the vegetables, which affects the nutrient absorption of the plants and reduces the comfort of the fish. With a single planting area of ​​less than 10,000 square meters, fish or vegetable farming can be economically feasible. However, the existing fish and vegetable symbiosis farming system is inefficient and cannot take into account the nutritional needs of fish and vegetables for fish and vegetables with a single scale of more than 10,000 square meters. [0003] In the common mode of fish and vegetable symbiosis system, the excrement of the fish pond is sedimented through the discharge water of the fish pond, biologicall...

AI Technical Summary

Problems solved by technology

[0008] However, in a large-scale aquaponics system, if one-sided bias is carried out according to the above method, the output of both cannot be taken into account, and the maximum economic benefits cannot be achieved. Specifically, there are the following direct problems:

[0009] 1. The instability of the system makes it difficult to increase fish production;

[0010] 2. The growth of algae inhibits the absorption of plants;

[0011] 3. The system does not supplement nutrients, and the plants are deficient in nutrients, making it difficult to supplement;

[0012] 4. Due to the physical removal process, it is difficult for plants to absorb phosphorus from the system;

[0013] 5. In terms of management, the large-scale fish and vegetable symbiosis system is a unified management mode of vegetables and fish in the same space, which requires extremely high comprehensive technical requirements for managers

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