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An integrated device for culturing and separating microalgae and its system and method

A technology for microalgae cultivation and algae liquid separation, applied in the direction of microorganism-based methods, biochemical equipment and methods, and methods for supporting/immobilizing microorganisms, etc., which can solve the problem of increased frequency of membrane module replacement and membrane cleaning, and increased operating costs of membrane processes , Membrane water flux decline and other issues, to achieve the effect of carbon emission reduction, waste gas purification and absorption, promotion of electron transfer effect, growth and metabolism rate increase

Active Publication Date: 2021-06-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the process of membrane filtration, the membrane will be in contact with the particles, colloidal particles or solute macromolecules in the solution, so these particles or macromolecules will be adsorbed or deposited on the membrane surface or in the membrane pores, causing the membrane pore size to become smaller or clogged , leading to a significant decrease in the water flux of the membrane, and finally an increase in the frequency of membrane module replacement and membrane cleaning, which in turn increases the operating cost of the membrane process
Membrane fouling is a very prominent problem in the use of membrane technology, and it is also a bottleneck that must be overcome to reduce the cost of membrane technology in the process of microalgae separation.

Method used

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  • An integrated device for culturing and separating microalgae and its system and method
  • An integrated device for culturing and separating microalgae and its system and method
  • An integrated device for culturing and separating microalgae and its system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0078] This example aims to verify the effect of Chlorella pyrenoidosa in the actual culture and isolation process after using the microalgae culture system.

[0079] In this embodiment, the specific implementation process of the alternate operation process of aeration and separation: During the microalgae cultivation and separation process, the temperature is maintained at 25±5°C. When the microalgae reaches a stable period, turn on the peristaltic pump, and control the transmembrane pressure of the ceramic membrane to -10~-30kPa by adjusting the speed of the peristaltic pump, and the average flow rate of the ceramic membrane is 20-50L m -2 h -1 , Filtration time depends on the amount of filtered microalgae, the concentration of concentrated microalgae can generally reach 30-100g / L. When the flux of the ceramic membrane is lower than 20L·m -2 h -1 , stop the filtration process, and turn on the aeration pump, the pressure of the gas is controlled at 10-50kPa, and the aerati...

Embodiment 2

[0087]The configuration of the microalgae culture medium is consistent with that in Example 1, and other parameters and operating steps are also the same as in Example 1. The difference is that the volume of the culture solution is 1L, and the same amount of air as before is maintained during the cultivation process, and 5g of conductive zinc sheet is added, and another comparison group is added with 5g of weak magnetic material, which is cut into small pieces of 5mm×5mm before adding the material ;Measure the concentration of microalgae regularly every day, the specific results are as attached Figure 5 shown. Adding conductive materials or magnetic materials can indeed promote the growth rate of microalgae to a certain extent, the main reason may be to promote the process of electron transfer during photosynthesis. Through comparison, it can be seen that the effect of promoting the growth rate of microalgae is better after adding conductive zinc flakes.

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Abstract

The invention belongs to the technical field of environmental protection, and in particular relates to an integrated device for cultivating and separating microalgae, and also relates to a microalgae cultivating system and method. The integrated device includes: a hollow cylindrical incubator, the upper part of which is provided with an incubator upper cover (1), and several vent holes (2) are opened on the surface of the incubator upper cover (1), and the incubator upper cover (1) Connect with the main body (A) of the hollow cylindrical incubator through the upper cover locking device (3); sealing ring (4); microalgae growth area (5); lamp holder (6); LED light source (7); ceramic filter The membrane (8); the filter pipe interface (9); the lower end of the main body (A) of the hollow cylindrical incubator is provided with an incubator base (10), and the lower end of the incubator base (10) is provided with a drain hole. Therefore, the technical solution provided by the present invention has strong market competitiveness and broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an integrated device for cultivating and separating microalgae, and also relates to a microalgae cultivating system and method. Background technique [0002] Microalgae refers to the general term for tiny algae that can only be seen under a microscope. Microalgae have the characteristics of small size, rapid growth, simple structure, strong environmental adaptability and high solar energy absorption efficiency. Microalgae has high application value and can be used for food, feed, biomass raw materials and fine chemical raw materials, etc., or as experimental materials for genetics and molecular biology. With the depletion of fossil fuels and the increasingly serious problems of environmental pollution in the process of mining and utilization of fossil fuels, the development of sustainable and clean energy has become an urgent problem in today's envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12M1/04C12M1/12C12M1/38C12M1/36C12N1/12C12R1/89
CPCC12M29/06C12M31/10C12M41/12C12M41/48C12M47/10C12N1/12
Inventor 周雪飞张亚雷于振江王慈炫朱昱敏张哲渊薛岩文杨蕾
Owner TONGJI UNIV
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