Production of biochemical fish meal from fish-meal waste water

Abstract

The invention is concerned with a kind of method to produce biochemical fish powder using waste water of fish powder. Filtrate and callback the solid stuff in the waste water of fish powder, and add separating assistant agent in the oil-water to separate and callback the fish oil. After the separation, decompress and concentrate the water solution with low temperature and add preserative agent to keep fresh for using. Dispose the waste water through microwave cracking into cracked solution, add compound proteinase to crack the protein of the cracked solution, adjust the pH value of enzyme hydrolyze solution and add biology gene with some components, such as microzyme to counteract the ferment at feasible temperature, adjust the flowing state of material to counteract the bitterness, salted and fishy smell of solution. Filtrate the viscous stuff such as mucopolysaccharides with ceramic filter having different apertures, and send the concentrated filtrate into the desiccation tower in vacuum to produce the biochemical fish powder by spraying and drying. This invention reduces the produce cost and enhances the quality and digest rate with advanced and feasible process.

Description

technical field [0001] The invention relates to a method for preparing biochemical fish meal used as nutritional additives such as feed and food, in particular to a method for preparing biochemical fish meal by utilizing fish meal waste water. Background technique [0002] After steaming low-value miscellaneous fish, fishmeal is obtained through pressing, drying, crushing and other processes, and the fishmeal wastewater formed by pressing is directly discharged without treatment. Because the solids such as dissolved fish protein contained in fishmeal wastewater, fish oil, amino acids, trace elements and other components are easily corrupted, resulting in eutrophication of offshore seawater, which seriously affects coastal tidal flats and offshore aquaculture in my country, and is also the main cause of frequent red tides. reason. At present, some manufacturers in China use concentrators to reclaim fish protein, such as the "fishmeal wastewater treatment method" disclosed in ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art that fishmeal wastewater is directly discharged to pollute the environment, and the fish protein recovered from fishmeal wastewater treatment produces poor economic benefits, the utility model provides a method for producing biochemical fishmeal using fishmeal wastewater, which is advanced and feasible in operation. It can reduce production costs and improve product quality, not only can completely solve the problem of fish meal wastewater polluting the environment, but also can turn waste into treasure, and the produced biochemical fish meal and fish protein have small molecular weight, suitable taste, and high absorption and digestibility