Ecological treatment matching technology for symbiosis of fishes and vegetables in circulating water under RAS technology

Abstract

The invention discloses an ecological treatment matching technology for symbiosis of fishes and vegetables in circulating water under a RAS technology. A first route comprises the steps of: discharging the circulating water discharged from a recycling aquaculture system (RAS) into an ecological breeding pond, performing stocking on filter-feeding fishes of Polyodon spashula, Aristichthys nobilis and Cyprinus carpio in the ecological breeding pond, constructing a floating bed on the ecological breeding pond, and planting Lactuca sativa, Ipomoea aquatica Forssk. and Oenanthe stolonifera on the floating bed so as to absorb ammonia nitrogen in water, and a second path comprises the steps of: discharging fish poop precipitate at the bottom of the RAS, introducing the discharged fish poop into abiogas tank, pouring the remaining part of harvested vegetables and dead fishes into the biogas tank, performing fermentation on the poured substances together with the fish poop so as to obtain biogas which can be used as production and life energy of a supplement project, introducing supernatant in the biogas tank into a track ring-shaped wetland, and planting aquatic vegetables and terrestrialvegetables in the track ring-shaped wetland so as to degrade the ammonia nitrogen in the water. The ecological treatment matching technology has the advantages that ecological balance and combinationof planting and breeding are achieved, zero emission of breeding is realized, the ecological treatment matching technology is environmentally friendly, and the economic benefits of agricultural production are improved.

Description

technical field [0001] The invention relates to the field of circulating water treatment methods, in particular to a fish and vegetable symbiosis ecological treatment proportioning technology for circulating water under the RAS technology. Background technique [0002] The domestic aquaculture industry is divided into fish farming in still water ponds, running water fish farming and cage fish farming, all of which consume a lot of water resources in essence, and the purpose of obtaining agricultural products is to discharge a large amount of waste water, which has a negative impact on the environment , it is impossible to carry out sustainable agricultural production development, and it is impossible to turn waste water into treasure; in China, technical institutions such as the Chinese Academy of Sciences are conducting technical research on zero-discharge of breeding and planting waste, and have achieved certain results; Emission production attempts, but there are still ma...

AI Technical Summary

Problems solved by technology

[0002] The domestic aquaculture industry is divided into fish farming in still water ponds, running water fish farming and cage fish farming, all of which consume a lot of water resources in essence, and the purpose of obtaining agricultural products is to discharge a large amount of waste water, which has a negative impact on the environment , it is impossible to carry out sustainable agricultural production development, and it is impossible to turn waste water into treasure; in China, technical institutions such as the Chinese Academy of Sciences are conducting technical research on zero-discharge of breeding and planting waste, and have achieved certain results; Emission production attempts, but there are still many deficiencies

[0003] Disadvantages of the existing technology: 1. A large amount of water resources are used for breeding (exchanging resources for products) is not conducive to sustainable development; 2. The full discharge of breeding has a negative impact on the environment; 3. Waste water is not recycled, and the combination of planting and breeding has not been realized