Method for cleaning inner wall of pipeline type photobioreactor pipe

Abstract

The invention belongs to the biologic field of micro algae, relating to a method for cleaning inner wall of pipeline type photobioreactor pipe in micro algae culture. Magnetic sphere is placed into a pipeline type photobioreactor, culture solution flows when being pushed by power, the magnetic sphere randomly enters into the pipeline of photobioreactor along with the culture solution and does directional movement or slides under manual regulation of a control system outside the pipeline, and the magnetic sphere continuously slightly collides and rubs pipe wall in circulated moving process in the photobioreactor pipeline, so that algae cell material adhered onto transparent pipeline inner wall is rubbed into liquid phase used for culturing micro algae, the pipeline photobioreactor pipeline is effectively cleaned and light transmission thereof is maintained. The invention can effectively clean cells into algae liquid phase at initial stage of adherence, or substance such as cell adhered to the inner wall of the pipeline type photobioreactor pipe is removed, restriction of micro algae cell adherence to micro algae cell culture is overcome, and good light transmission and culture effect of photobioreactor are maintained.

Description

technical field [0001] The invention belongs to the field of microalgae biology and relates to a method for cleaning the inner wall of a pipe photobioreactor for microalgae cultivation. Background technique [0002] As an important part of primary productivity in the biosphere, microalgae are the only bait for the entire growth process (or specific developmental stages) of aquatic animals in the aquatic ecosystem or the bait for bait organisms. At the same time, microalgae are close to 50% of plant species, and have diversity, complexity and particularity in terms of germplasm, ecological distribution, genetic information, biochemical composition, and metabolic pathways, which further determine their potential nutritional and pharmaceutical value. Humans may develop a large number of structurally specific high value-added bioactive ingredients from them. [0003] Energy is not only the lifeblood of economic development but also the driving force of social development, which...

AI Technical Summary

Problems solved by technology

[0011] Once the microalgae cells adhere to the wall, a vicious cycle will occur and the following series of adverse effects will be formed, which will make the cell culture effect continue to decline, and even lead to the collapse of the entire culture system

First of all, after the microalgae cells adhere to the inner wall of the reactor, the surface of the reactor material is rough, which increases the fluid resistance, reduces the flow rate of the algae solution, and further increases the number of dead spots in the photobioreactor, making it easier for the cells to adhere. wall phenomenon, a vicious cycle in which the degree of cell attachment is continuously aggravated; secondly, after the microalgae cells are attached to the wall, the formed microalgae spots (or thin layers of microalgae) are also light-isolated spots (or even light-isolated layers), varying degrees It affects the light permeability of the photobioreactor and hinders the light from entering the photobioreactor, so the light absorbed by the internal microalgae cells is insufficient, and the photosynthetic efficiency of the microalgae cells decreases; thirdly, the adherent cells near the pipeline are always under strong light state, the light is oversaturated and light damage occurs, resulting in a decrease in the photosynthetic efficiency of this part of the cell, and even cell death

In addition, if the adherent cells die, the algae will rot, which will also affect the quality of microalgae products.

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