Runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells

A culture system and raceway pool technology, applied in the field of microalgae cultivation engineering, can solve the problems of easy breeding of bacteria, large energy consumption, biomass loss, etc., and achieve the effects of improving photosynthesis efficiency, improving utilization rate, and preventing light damage

Inactive Publication Date: 2015-10-28
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of this method is poor, especially when dealing with some non-benthic microalgae
In addition, since most of the cells are settled in a dark environment for a long time, this process is not only easy to breed bacte

Method used

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  • Runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells
  • Runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells
  • Runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells

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Experimental program
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Effect test

Embodiment 1

[0049] figure 1 , 3 , 4. As shown, the microalgae culture system in the runway pool that utilizes microbubble continuous air flotation to harvest algae cells provided by the present embodiment includes a runway pool, and a turbulent carbon replenishing device, a microbubble air flotation harvesting device, and a barrier are provided in the runway pool. Flow device, double paddle wheels and the groove structure below.

[0050] The turbulent flow carbon replenishment device for the microalgae runway pool provided in this embodiment includes a transparent sealing cover and a base plate, the transparent sealing cover is located above the base plate, and a water flow blocking plate is arranged on the inner wall and the bottom plate of the transparent sealing cover perpendicular to the direction of water flow, the water flow blocking plate and the exposure plate. An aeration device, the aeration device is located on the bottom plate and in front of the water flow blocking plate, th...

Embodiment 2

[0069] Such as figure 2 As can be seen, the difference between the new gas supply device for the microalgae runway pool provided in this embodiment and that in Embodiment 1 is that the transparent enclosure and the bottom plate are fixedly connected together by two pillars.

Embodiment 3

[0071] Such as Figure 5 As mentioned above, the difference between this embodiment and the previous embodiments is that a groove structure is set under the paddle wheel, which can make the stirred algae liquid form an upward recoil force there, thus helping to realize the upper and lower layers of the algae liquid convection. The concave surface of the groove is arc-shaped, the span is 3 times of the width of the paddle wheel impeller, and the deepest part is 15cm.

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Abstract

The invention discloses a runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells; the system includes a runway pool, the runway pool is internally provided with a turbulent flow carbon supplementing device, a device using micro-bubble continuous gas flotation to collect the runway pool algal cells, a flow blocking device, a double-paddle-wheel device and a groove structure which is arranged at the lower side. The system has the following advantages: (1) the circulation of a water body in the runway pool can be accelerated, and the gas exchange frequency between a liquid surface and the atmosphere is improved; (2) preliminary concentration on the algal cells can be achieved effectively in real time, the centrifugal efficiency is improved, the centrifugal energy consumption is reduced and the harvesting cost is decreased; (3) distributed carbon dioxide can be prevented from escaping, the utilization rate of carbon dioxide is improved, and the pH of an algal liquid is more rapidly adjusted; (4) exchange between an upper layer and a lower layer of the algae liquid can be effectively promoted, not only can the algae cells on the surface layer be prevented from being damaged by light, but also the total effective light energy quantity received by the algae cells of the unit water body is increased; and (5) the runway pool can realize continuous cultivation of microalgae, and an extremely small amount of waste water generated in the cultivation process can be recycled after the waste water is introduced to a disinfection pool and a nutrient salt blending pool through a pipeline and is treated.

Description

technical field [0001] The invention relates to a microalgae culture system in a raceway pond for continuously harvesting algae cells by means of microbubbles, in particular to a raceway pond for large-scale cultivation of microalgae, which belongs to the field of microalgae cultivation engineering. Background technique [0002] Microalgae are the most important primary producers of natural water bodies, accounting for more than 40% of global CO2 fixation by microalgae. At the same time, microalgal cells are rich in polyunsaturated fatty acids, various essential amino acids, active polysaccharides, pigments and other high value-added bioactive substances, making them of great application value in the fields of functional food, cosmetics, medicine and fine chemicals. In recent years, with the acceleration of the global industrialization process, the demand for energy has been increasing, while the traditional fossil energy is non-renewable, and the reserves are decreasing day...

Claims

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Application Information

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IPC IPC(8): C12M1/04C12M1/02
CPCC12M23/02C12M27/02C12M29/06C12M47/02
Inventor 潘克厚韩吉昌张琳王松李赟
Owner OCEAN UNIV OF CHINA
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