Purification treatment method for mariculture tail water emission

Abstract

The invention discloses a purification treatment method for mariculture tail water emission. Various mariculture tail water is collected in a uniform manner, subjected to aeration treatment through activated sludge, then purified by secondary precipitation and sludge reduction and further subjected to primary biological purification, ammonia nitrogen and nitrogen nitrite are degraded through an active biological film, ruppiaceae-based secondary biological purification and tertiary biological purification composite treatment is further performed, ammonia nitrogen and active phosphate are sufficiently absorbed and utilized, nitrogen, phosphorus and other eutrophic pollutants are efficiently removed, and culture tail water drained after systematic purification treatment is superior to the national second-class seawater quality standard. The method is applicable to purification treatment of fish and prawn mariculture in various manners.

Description

technical field [0001] The invention belongs to the field of agricultural and environmental protection mariculture tail water discharge purification treatment, and specifically relates to a mariculture tail water discharge purification treatment method. Maritime aquaculture tail water refers to the waste water produced by aquaculture fish and shrimp. Direct discharge has already had an impact on marine environmental pollution. At present, the state prohibits the direct discharge of mariculture tail water. Mariculture must conform to the development direction of the national agricultural industry's environmental protection, green, healthy and environmentally friendly, especially the purification of mariculture tail water discharge The treatment method solves the problem of direct discharge of the current aquaculture tail water. Background technique [0002] At present, the tail water of land ponds or industrial mariculture models in my country is mainly discharged directly, w...

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Problems solved by technology

[0004] In summary, both of the above two inventions belong to the purification treatment method of freshwater fish pond culture tail water, therefore, there is a big difference with the purification treatment method of mariculture tail water discharge proposed by the present invention

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