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A cascading device and method for harvesting microalgae biomass with high efficiency and energy saving

A high-efficiency, energy-saving, and biomass-based technology, applied in enzymology/microbiology devices, biochemical cleaning devices, biochemical equipment and methods, etc., can solve the problems of high cost input, high cost, and high energy consumption of centrifugation, and achieve reduction Harvesting costs, reducing labor costs, and low professional requirements

Active Publication Date: 2016-06-15
INST OF AQUATIC LIFE ACAD SINICA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the biological characteristics of microalgae, common collection methods are difficult to apply to the harvesting of their biomass
At present, the methods of collecting microalgae in actual production mainly include centrifugation and flocculant methods, but both have great limitations.
Among them, the centrifugation method has high energy consumption and high cost. Although the collection rate is high, it is not suitable for batch industrial production.
The flocculant method is used alone, and the energy consumption is low, but the collection rate is not high. After flocculation, further follow-up treatment is required to harvest biomass. The cost input is high, and it is difficult to industrialize

Method used

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  • A cascading device and method for harvesting microalgae biomass with high efficiency and energy saving
  • A cascading device and method for harvesting microalgae biomass with high efficiency and energy saving
  • A cascading device and method for harvesting microalgae biomass with high efficiency and energy saving

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Embodiment Construction

[0031] The method will be further described below in conjunction with the accompanying drawings and specific examples.

[0032] A cascading high-efficiency and energy-saving device for harvesting microalgae biomass, including a microalgae liquid inlet hose 1, the microalgae liquid inlet hose 1 communicates with the flocculation tank 4 through the first peristaltic pump 5-1, and the flocculation tank 4 is also passed through the second The second peristaltic pump 5-2 is connected with the flocculant storage tank 6, and the flocculation tank 4 is also connected with the settling tank 8 through the liquid inlet hose 7 of the settling tank. Settling tank supernatant output hose 11-1 is arranged on the top, and the bottom of the settling tank 8 communicates with the third peristaltic pump 5-3 through the sedimentation tank sediment output hose 11-2, and the third peristaltic pump 5-3 passes through the tube centrifugal Machine sampling hose 12 communicates with tubular centrifuge 1...

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Abstract

The invention discloses a cascade, efficient and energy-saving method for harvesting microalgae biomass. The method comprises the following main steps: a prepared flocculant and a microalgae liquid culture are uniformly mixed; the mixed solution enters a sedimentation tank for sedimentation; a part of a supernatant is removed; the residual mixed solution is pumped through a peristaltic pump into a tubular bowl centrifuge to carry out algae-water separation; and finally, the microalgae biomass is harvested. The invention also discloses a cascade, efficient and energy-saving device for harvesting the microalgae biomass. Main devices used contain a flocculation basin, a sedimentation tank, a centrifugal device and a power controller. Flow velocity of an introduced sample is controllable. Sample processing is continuous and sample handling capacity is large. The method and the device are suitable for large-scale production and are suitable for harvesting the microalgae biomass at large scale.

Description

technical field [0001] The invention relates to the technical field of oil-producing microalgae biomass harvesting, more specifically to a cascading device for harvesting microalgae biomass with high efficiency and energy saving, and also relates to a method for cascading high-efficiency and energy-saving harvesting of microalgae biomass, which is suitable for mass production Rapid and efficient collection of oily microalgal biomass. Background technique [0002] With the increasing consumption of mineral energy and the resulting global climate problems, the whole world is committed to the research, development and utilization of new environmentally friendly renewable energy. Among them, microalgae with high oil content have become one of the most promising renewable energy sources due to their advantages such as high photosynthetic efficiency, short growth cycle, high cell oil content and strong environmental adaptability. [0003] In the industrialization process of using...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/02C12N1/12C12M1/02
CPCC12M27/02C12M47/10
Inventor 李敦海彭成荣罗群李双双郑娇莉
Owner INST OF AQUATIC LIFE ACAD SINICA
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