Comprehensive processing method of aquiculture sewerage

Abstract

The invention relates to a comprehensive treatment method of aquiculture sewage comprising the following steps: providing a ecological treatment pool, discharging the aquaculture sewage into the ecological treatment pool, then inoculating photosynthetic bacteria and chlorella to reach a first ecological environment; inoculating rotifer and moina macrocopa to reach a second ecological environment;drying the rotifer and daphnias at a low temperature after collecting the same to obtain the solid products; discharging the filtrate after ozone treatment; supplementing new aquiculture sewage into the ecological treatment pool and repeating the above treatment. The method of the invention constructs an integration technology system about physicochemical, biology, ecological combinative technology and provides feasible technical support for the sustainable development of the intensive breeding industry and the establishment of the circular economy mode.

Description

Technical field [0001] The invention belongs to the field of aquaculture and relates to a method for treating aquaculture sewage. Background technique [0002] With the continuous expansion of the scale of aquaculture and the rapid increase in output, a series of ecological and environmental problems have gradually emerged. The residual bait, debris, fish and shrimp body excreta produced in aquaculture cause aquaculture to produce its own pollution, especially with the development of intensive cultivation methods, the breeding density and the amount of bait greatly increase, the amount of residual bait and fish body excretion The amount of food has also increased correspondingly, and the pollution of aquaculture has become more serious. In marine fish farming, its metabolites are 20% to 35% of the bait amount, and the residual bait is 10-40% of the bait amount, which is directly discharged into the water body, thereby reducing the dissolved oxygen in the water, ammonia nitrogen ...

AI Technical Summary

Problems solved by technology

However, the use of algae-rotifer-copepod food chain ecosystems to directly recycle nitrogen and phosphorus nutrients from aquaculture wastewater has not yet been studied.

[0011] To sum up, the current research and practice of aquaculture sewage treatment technology still focus on the removal of pollutants, using a single treatment method or a simple combination, there is no proper solution to the pollution of antibiotics and heavy metals, and the nitrogen and phosphorus in wastewater There is no effective recycling method for nutrients such as nutrient substances, and there is no economical, efficient, and multi-functional comprehensive treatment technology.

The pollution load of aquaculture sewage is high. If it is purely for the purpose of treatment, the construction investment and operation costs will be high, and the burden on enterprises will be heavy.

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