Method for treating industrial mariculture tail water in multi-combination manner

Abstract

The invention belongs to the technical field of mariculture, and particularly relates to a method for treating industrial mariculture tail water in a multi-combination manner. The method comprises thefollowing steps: precipitating and pretreating culture tail water in a buffer pool, carrying out engineering treatment on the culture tail water subjected to precipitation and pretreatment, and removing residual nitrogen and phosphorus nutritive salt in an ecological treatment unit. According to the method, the efficient engineering water treatment and ecological water treatment technology are combined, so that the tail water generated by high-density industrial mariculture can be effectively treated, up-to-standard discharge can be achieved after treatment, and the method has the advantagesof being small in occupied area, high in removal efficiency of nutrient salt such as nitrogen and phosphorus, small in energy consumption, low in operation cost and the like.

Description

technical field [0001] The invention belongs to the technical field of mariculture, in particular to a multi-combination method for treating industrial mariculture tail water. Background technique [0002] China is a big country in aquaculture, and its aquaculture production ranks first in the world. According to the 2019 China Fishery Statistical Yearbook, my country's aquaculture output in 2018 was 49.9106 million tons, far exceeding the catch. In the past two decades, the mariculture industry has developed rapidly in China. Land-based seawater factory aquaculture, especially the recirculating aquaculture model, can achieve high-density farming of aquatic organisms such as fish and shrimp by optimizing the aquaculture water environment. At the same time, the aquaculture wastewater mixed with a large amount of residual bait, aquatic animal manure, input leached matter and metabolites is directly discharged into the environment or after simple treatment, which will easily c...

AI Technical Summary

Problems solved by technology

At present, in actual production, mariculture wastewater is generally discharged directly into the sea after simple primary sedimentation, and it is difficult to meet the requirements of the discharge water quality index

For the related design of mariculture wastewater, there are disadvantages such as relatively long treatment cycle, limited effect, large floor area, small controllability, and limited water volume per unit time.

Images