Floating microalgae cultivation system and microalgae cultivation method

A microalgae culture, floating technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problem that the film material is difficult to resist wave impact for a long time, insufficient low cost, large-scale microalgae production, Increase the cost and other issues to achieve the effect of increasing the yield of microalgae production, reducing installation costs and reducing costs

Active Publication Date: 2021-09-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many advantages, there are still many problems in the current floating microalgae cultivation system, including: 1) most floating photobioreactor systems are prone to membrane fouling, which is difficult to clean, and therefore requires frequent updating of the entire photobioreactor system , which causes a lot of waste and increases the cost; 2) Although the floating culture system made of thin film can reduce the amount of materials and thereby reduce the cost, the thin film material is difficult to resist wave impact for a long time, and it is easy to break and leak
Therefore, monolithic photofloating photobioreactors are insufficient for low-cost, large-scale microalgae production

Method used

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  • Floating microalgae cultivation system and microalgae cultivation method
  • Floating microalgae cultivation system and microalgae cultivation method
  • Floating microalgae cultivation system and microalgae cultivation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1. Flexible floating carrier and thin-film photobioreactor with arched structure

[0043] Such as figure 1 , the floating carrier that makes in the present embodiment, its shape is open rectangle, and floating carrier is the rectangular parallelepiped pool that forms by welding together of transparent polyvinyl chloride (PVC) sealing pipe, and the diameter of inflatable pipe is 15.0cm. According to this method, the length of the floating carrier is 10.0m, the width is 2.0m, it has an arched structure, and the height is 1.5m. The floating carrier has a handle ring 8, which can be connected with ropes and anchors, and the floating carrier 1 is fixed in a certain area of ​​water to prevent it from being washed away by water waves. The bottom surface of the floating carrier 1 is used to support the photobioreactor, maintain a rigid structure at the bottom of the reactor, and promote the sufficient mixing of the liquid inside the photobioreactor 2 . When in use, th...

Embodiment 2

[0044] Example 2. Rigid floating carrier and thin-film photobioreactor with arched structure

[0045] The difference from Example 1 is that the floating carrier 1 of the rigid arch structure produced in this embodiment is rectangular or square, and its main material is stainless steel material with anti-seawater corrosion, and the arch structure 3 is an arch of stainless steel material. Tube, the diameter of the tube is 2.0cm. The production method is as follows: the carrier is four independent anti-seawater corrosion stainless steel support frames such as figure 2 and 3 , the frame is a triangle formed by connecting steel pipes through electric welding, and the diameter of the steel pipes used is 5.0cm. After docking and correction, the frame is connected into a cuboid through U-shaped cards. A certain number of foam plastic floats are fixed at the bottom of the frame to provide buoyancy. The arched steel pipe with a certain radian is connected to the top of the box by e...

Embodiment 3

[0047] Example 3. Rigid floating carrier has a thin-film photobioreactor with a cavity structure upper wall

[0048] Such as Figure 5 As shown, the upper surface of the reactor has a cavitation structure (ie, a transparent inflated gas). The top of the photobioreactor is provided with an inlet and outlet 6, which communicates with the inside of the cavity 4 through the upper surface. When in use, the reactor is placed in a floating carrier without an arched structure, and is fixed with the floating carrier through an adhesive tape buckle structure, such as Figure 6 shown. Then put materials for microalgae cultivation through the inlet and outlet 6, such as microalgae and microalgae culture fluid, and during the cultivation of microalgae, also take samples through the inlet and outlet to observe the growth of microalgae.

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Abstract

A floating microalgae cultivation system, comprising a photobioreactor and a floating carrier carrying the photobioreactor, both of which are detachably connected; wherein the floating carrier refers to a solid structure that can float on the water surface; the photobiological The reactor is a closed type, and the liquid in the photobioreactor is mixed with the movement of the floating carrier; the top of the plastic bag photobioreactor is suspended and fixed on the arched structural beam of the floating carrier, or on the A number of air bubble structures are arranged on the top of the photobioreactor; an inflatable air cushion with adjustable thickness is installed between the photobioreactor and the floating carrier, so as to control the cultivation temperature inside the photobioreactor. The microalgae cultivation system of the present invention has simple structure of each main body, easy manufacture, low cost, long service life, easy enlargement and good application prospect in the large-scale cultivation of microalgae.

Description

technical field [0001] The invention relates to the field of microalgae biotechnology, in particular to a floating microalgae cultivation system and a microalgae cultivation method. Background technique [0002] Mixed energy consumption accounts for the largest part in conventional closed photobioreactors, which significantly increases the total cost of microalgae cultivation, therefore, it is crucial to reduce the power consumption during microalgae cultivation. But if the mixing is insufficient, it will lead to mass transfer problems of carbon and oxygen, and there is only limited cell movement in the vertical direction, which cannot cause effective circulation of microalgae between the light zone and the dark zone, and the light energy utilization efficiency is low. To resolve this contradiction, natural forces can be considered to drive the mixing of microalgae cultivation systems. [0003] In the prior art, there is a technical means of using wave energy to drive the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12N1/12C12R1/89
CPCC12M21/02C12M23/56C12N1/12
Inventor 迟占有朱陈霸赵云鹏朱贺翟晓嵌
Owner DALIAN UNIV OF TECH
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