Keep-alive concentration method for chrysophyceae and device for implementing method

Abstract

The invention discloses a keep-alive concentration method for a chrysophyceae and a device for implementing the method. The invention has the advantages that through the adoption of the method and the device, the keep-alive ratio of the chrysophyceae reaches above 95% within 24 h after the chrysophyceae is concentrated to 30 to 100 million cells per liter. According to the keep-alive concentration method for the chrysophyceae, an external compression super-microfiltration membrane is adopted to concentrate to-be-concentrated chrysophyceae solution to obtain concentrated chrysophyceae solution, wherein the super-microfiltration membrane is a polyvinylidene fluoride super-microfiltration membrane with an aperture of less than 0.05 micron. The device for implementing the method comprises an injection pump, a chrysophyceae solution storage tank, a chrysophyceae solution pump, an external compression super-microfiltration membrane component, a back-flushing pump and a liquid waste storage tank, wherein the injection pump is communicated with the chrysophyceae solution storage tank by a first pipeline; the chrysophyceae solution storage tank is further communicated with the inlet of the external compression super-microfiltration membrane component by a second pipeline; and the liquid waste outlet of the external compression super-microfiltration membrane component is connected with a third pipeline inlet and a fourth pipeline outlet in parallel.

Description

technical field [0001] The invention relates to a method for concentrating microalgae and a device thereof, in particular to a method for preserving and concentrating golden algae and a device thereof. Background technique [0002] Golden algae is an indispensable bait in the production process of aquaculture animal seed. If the unenriched golden algae culture stock solution is directly used in production, there are the following problems: 1. It will increase the toxic components such as ammonia nitrogen in the animal seed breeding water, seriously affecting the growth and development of farmed animals; 2. The gold in the culture stock solution Algae cell density is very low, the cost of sales and transportation as a product is extremely high, and it is impossible to carry out specialized production; 3. It is impossible to process and store golden algae bait. [0003] The concentration and collection of cultured microalgae bait has always been a key technical point in the p...

AI Technical Summary

Problems solved by technology

If the unenriched golden algae culture stock solution is directly used in production, there are the following problems: 1. It will increase the toxic components such as ammonia nitrogen in the animal seed breeding water, seriously affecting the growth and development of farmed animals; 2. The gold in the culture stock solution The density of algae cells is very low, and the cost of sales and transportation as a product is extremely high, making it impossible to carry out specialized production; 3. It is impossible to process and store golden algae bait

Conventional microfiltration and ultrafiltration usually cause microalgae to block the filter pores and make the filtration process difficult to continue. What is more serious is that golden algae is a single-celled algae without cell walls. Death or even rupture and loss of bait application value

Images