A resource utilization method of intensive Litopenaeus vannamei culture wastewater

Abstract

The invention relates to a resource utilization method of intensive litopenaeus vannamei breeding wastewater. The method comprises the following steps: step one, performing filtering on wastewater discharged from an intensive litopenaeus vannamei breeding pond by using a slant filtering screen; step two, collecting wastewater after the filtering by the slant filtering screen into a wastewater storage pond; step tree, conveying the wastewater in the wastewater storage pond to a sunlight-shed microalgae proliferation pond for culturing microalgae; and step four, conveying the cultured microalgae water into a cladoceran or a copepod cultivation pond, and harvesting cladocerans or copepods for supplementing the baits of the litopenaeus vannamei breeding. The method has the advantages that with the help of a food chain of microalgae-zooplankton-prawn, cyclic utilization of nitrogen and phosphorus nutrient substances in the wastewater is realized, while the eutrophic breeding wastewater is purified, the breeding water environment is protected, and the natural baits for the intensified prawn breeding are supplemented, so that the feed cost of the prawn breeding is reduced, and the breeding benefits are improved.

Description

technical field [0001] The invention relates to the technical field of resource-based treatment of aquaculture wastewater, in particular to a method for resource-based utilization of intensive Litopenaeus vannamei culture wastewater. Background technique [0002] Litopenaeus vannamei has become the main cultured species of prawns in China, South America and Southeast Asia because of its fast growth, high meat yield and wide adaptability to salinity. Since the introduction of aquaculture in my country in the late 1980s, China’s Litopenaeus vannamei industry has developed rapidly. According to the statistics of the China Fishery Yearbook, in 2016, my country’s seawater crustacean aquaculture output was 1.4349 million tons, of which more than 40% came from Litopenaeus vannamei, while freshwater The production of cultured Litopenaeus vannamei was 731,500 tons. However, with the rapid development of my country's Litopenaeus vannamei industry, many problems such as provenance, dis...

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Problems solved by technology

However, there is no report on the resource utilization method of this intensive Litopenaeus vannamei culture wastewater

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