Research Progress on the Treatment Technology of Tail Water from Factory Farming of Marine Fish

The tail water of aquaculture is one kind of waste water which contains a lot of residual bait and feces. It is rich in nitrogen and phosphorus, and it is easily to cause water eutrophication and secondary ecological problems if tail water discharged into water environment directly. Factory aquaculture of marine fish is one of the encouraged aquaculture methods in the 13th five-year plan for national fishery development (2016~2020). However, due to the high intensification, the technical requirements for the treatment of farming tail water are higher. In order to provide reference for the development of the treatment technology of the tail water from the factory, it was summarized on the common technologies for the treatment of the tail water, and the advantages and disadvantages of various technologies are also analyzed in this paper.