Closed loop type fish and vegetable symbiosis system

Abstract

The invention discloses a closed loop type fish and vegetable symbiosis system. The closed loop type fish and vegetable symbiosis system comprises a buffer pool, a fishpond, a sedimentation tank, a disinfection tank, a filter tank, a biofiltration tank, a hydroponic area, a fermenting tank and a dry-wet separation device. Fish manure and other waste generated by fish are subjected to sedimentation, disinfection, filtration, fermentation and other circular processing to be converted into nutrition required for vegetables. Oxygen generated by photosynthesis of the vegetables can be utilized by the fish, carbon dioxide generated by fish breathing provides a raw material for the photosynthesis of the vegetables, thereby efficiently utilizing water, gas, nutrition and other resources. Through reasonable layout and closed-loop design of each module of the system, the stability and running efficiency of the system are effectively improved, the hydroponic area corresponding to a water body ofeach unit is increased, the construction cost is reduced, the large-scale and commercialized promotion can be achieved; the closed loop type fish and vegetable symbiosis system avoids the problem of environment pollution possibly generated by aquaculture, can also harvest the fish and vegetables with considerable quantity and safe quality, thereby satisfying the demands of people for food safety,environmental protection and other aspects.

Description

technical field [0001] The invention relates to the field of compound agriculture, and more particularly, to a closed-loop aquaponics system. Background technique [0002] Aquaculture is highly dependent on water quality. The three nitrogens (ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, commonly known as "three nitrogens") and other pollutants produced by fish directly or indirectly affect their own survival. The random discharge of aquaculture wastewater also aggravates the water environment pollution and becomes an important source of water pollution. In addition, people pay more and more attention to the issue of food safety. Green, pollution-free, nutritious and healthy vegetable products are loved by people, which is particularly important for improving people's quality of life. [0003] The aquaponic symbiosis technology that has emerged in recent years integrates circulating aquaculture technology and vegetable hydroponics technology, using beneficial micro...

AI Technical Summary

Problems solved by technology

[0004] However, the existing aquaponics technology still has the following problems: First, the utilization rate of water and nutrients needs to be improved. For example, the semi-closed-loop aquaponics system regularly removes fish feces from the system and changes the water regularly, and the system integration is relatively low. Low, fish manure treatment is not thorough, and water and nutrients are wasted; second, the stability of the system’s all-weather and year-round operation is not high, mainly reflected in the water temperature seasons, large day and night fluctuations, resulting in high overall water quality control costs; third, the system Improper design results in cumbersome daily maintenance and low operational stability. If solid media (ceramsite, etc.) are used to simply filter and deposit fish manure, the problem will become more serious when high-density (greater than 30 kg / m3) farming is achieved; Fourth, some systems mechanically transplant circulating water equipment, which requires a large investment, such as using microfilters for filtration. Especially in the north, some greenhouses used for production generally have a single area of ​​about 400 square meters. If each greenhouse is installed A microfiltration machine has a large one-time investment and operating costs, which is not conducive to large-scale and commercial promotion

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