grid photobioreactor

Abstract

The invention relates to a grid-plate type photobioreactor, which comprises a supporting plate and a plurality of grid plates which are supported by virtue of the supporting plate, wherein the plurality of grid plates extend in a horizontal direction and the plurality of grid plates are superposed in a vertical direction in a mode of being mutually spaced; each grid plate has an upper surface, which is used for holding a culture solution for cultivating target photosynthetic microorganisms, and a lower surface which is opposite to the upper surface; each grid plate is provided with a connecting side which is connected to the supporting plate, a free side which is opposite to the connecting side and two end sides which are adjacent to the connecting side; and weir parts, which extend from the upper surfaces of the corresponding grid plates, are arranged at the two end sides and the free sides, wherein the minimum vertical height of the weir parts at the free sides and the end sides is not greater than 10cm. In addition, the invention also relates to a method for cultivating the photosynthetic microorganisms with the application of the grid-plate type photobioreactor.

Description

technical field [0001] The invention relates to the field of photobioreactors, in particular to a grid-type photobioreactor. Background technique [0002] Photosynthetic microorganisms are a group of microorganisms that use light as their sole or main energy source, including microalgae, cyanobacteria and other microorganisms that contain chlorophyll and can perform photosynthesis. This kind of microorganism has important biological utilization value, especially microalgae, which is rich in protein and can be used as aquatic bait or livestock feed (such as spirulina); more importantly, some microalgae can synthesize a large amount of secondary metabolism under certain conditions substances, such as oils, carotenoids, polysaccharides, etc. These substances are often biologically active substances with extremely high economic value, and can be used in functional foods, food additives, pharmaceuticals, bioenergy and other fields. Among them, extracting microalgae oil through l...

AI Technical Summary

Problems solved by technology

However, this solid-state culture method often depends to a large extent on the water retention performance of porous materials and the adhesion characteristics of algae. If the water retention of the material is poor, it needs to supply water continuously, which consumes energy; If the species is easy to detach, it will not be able to make the algae grow normally

These porous materials are often opaque materials, which will absorb more light energy. The efficiency of light utilization by algae species is not high. Difficulty with disinfection

Moreover, this solid-state culture method is often very unsuitable for the cultivation of larger algae, such as Nostocs, Gexianmi and Dipis

[0009] To sum up, the existing photobioreactors generally have the following technical problems: ①, the open raceway pool occupies a large area, the culture density is low, the energy consumption of the culture medium circulation is high, and it is easy to be polluted by the outside world; ②, the closed type The cost of light-transmitting containers is high, especially glass containers, which are limited by the particularity of glass processing technology and cannot be molded at one time. The manufacturing cost, installation and maintenance costs are very high, and there are also low cell density, insufficient space utilization, and high energy consumption. The problem

③. Whether it is an open track pool or a closed light-transmitting container, it needs to consume a lot of culture fluid and energy. The concentration of the culture fluid is low when harvesting, and it needs to go through cumbersome separation, filtration and drying procedures. Technical defects cannot reduce the microalgae Product Cost

④The solid-state culture photobioreactor is very dependent on the material itself, the light utilization efficiency is low, and its applicability is relatively limited. The liquid supply device is an energy-consuming device, so it cannot further reduce the culture cost

⑤ The existing photobioreactors are not conducive to the effective isolation and control of pollution sources

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