A continuous microbial culture device

Abstract

The invention belongs to the field of microorganism cultivation devices, and in particular relates to a microorganism continuous cultivation device. It includes a culture tank and an aeration tube arranged in the culture tank, and also includes a heating tube surrounding the periphery of the aeration tube and heating the culture solution in the culture tank. The aeration tube is also fixed with a plurality of baffles distributed along the axial direction of the aeration tube. The baffles are circular in shape and the center is sunken downwards. Leakage holes are arranged on the positions of the baffles close to the aeration tube. The heating pipe is spirally wound around the periphery of the aeration pipe, and the diameter of the spiral is larger than that of the baffle. The invention has the advantages of simple structure, convenient operation and low manufacturing cost, and can greatly reduce the deposition of iron and vanadium on heating pipes and culture tanks while continuously cultivating ore leaching microorganisms, so as to achieve the goal of continuously obtaining microorganisms for a long time, and greatly extend the working life of the heating device. service life.

Description

technical field [0001] The invention belongs to the field of microorganism cultivation devices, and in particular relates to a microorganism continuous cultivation device. Background technique [0002] Biometallurgy is a hydrometallurgical technology that uses ore leaching microorganisms to leach low-grade, highly complex, refractory mineral resources or solid waste containing heavy metals. It has a wide range of metal leaching, good leaching effects, and no pollution. Environmental pressure It is small, and has the advantages of low input cost and good economic benefits, so it is widely used in the field of mining of mineral resources and recovery of secondary resources. [0003] Bioleaching microorganisms play the main role in biometallurgy, so cultivating ore leaching microorganisms and continuously obtaining a large number of leaching microorganisms in the biometallurgy process are the key to ensure bioleaching. In the process of bioleaching process exploration and opti...

AI Technical Summary

Problems solved by technology

This aeration method needs to control the specific direction of the air bubbles. If the aeration hole is too large, the air bubbles will be too large, and the aeration efficiency per unit volume will decrease. If the aeration hole is too small, the air bubbles will move along the airflow direction and the path will be short, and will not form a spiral. Stirring, the effective aeration area is limited to the vicinity of the aeration tube

And for the iron oxide leaching microbial culture system, the formed precipitate particles will cause the aeration aperture to fluctuate within a certain range

Therefore, the aeration method in the prior art is difficult to take into account the effects of high-efficiency aeration and reducing scaling of heating pipes (iron-vanadium-like substances that are easily formed under the action of leaching microorganisms tend to be formed on heating) at the same time.

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