74 results about "Microalgae growth" patented technology

The invention relates to a carbon quantum dot for strengthening and promoting growth of microalgae and application thereof. In the process of preparing the carbon quantum dots by a conventional hydrothermal method, a precursor mixture is subjected to acidification modification in advance, the pH value is adjusted to 2 by using nitric acid, and then a hydrothermal reaction is performed, so that the prepared carbon quantum dots have the capability of promoting the growth of microalgae. However, if other acids are adopted or pH adjustment is not in place, the effect cannot be achieved, and even the inhibition effect can be achieved. The obtained product is good in effect and stable in performance, no special reaction device needs to be additionally arranged in the acidification modification process, and the method has the advantages that operation is easy and convenient, raw materials are easy to obtain, and the process can be quantified; the method is simple and convenient in process operation, has universality and is easy for industrial production.

Photobioreactors are described herein. The photobioreactors include a vessel for cultivating microalgae. The vessel defines an interior chamber comprising a culture containing medium. The vessel has at least one transparent wall to permit passage of light of a frequency necessary to promote growth of the microalgae in the culture containing medium. The vessel also includes a plurality of sensors, each sensor being configured to monitor at least one environmental condition within the photobioreactor, and at least one flow generator positioned within the vessel. The photobioreactor also includes a controller communicatively coupled to each of the plurality of sensors and the at least one flow generator. The controller is configured to: receive sensor data from each of the plurality of sensors, apply a mathematical model to the sensor data to determine when to adjust at least one environmental condition within the photobioreactor and adjust one or more components of the photobioreactor.

The invention relates to a microalgae photosynthetic carbon sequestration technology, and aims to provide a method for promoting microalgae carbon sequestration by a polyethylene glycol passivated nitrogen-doped carbon dot conversion spectrum. The method comprises the following steps: passivating the surfaces of nitrogen-doped carbon dots by using polyethylene glycol, and then directly adding the passivated nitrogen-doped carbon dots into a microalgae suspension, ultraviolet light with the wavelength of 280-390 nm in external light is converted into blue light with the wavelength of 400-500 nm by passivating the nitrogen-doped carbon dots so as to be directly utilized by microalgae, so that growth and carbon sequestration are promoted while the stress resistance of algae cells is improved. According to the method, damage to algae cells can be greatly reduced by converting an ultraviolet spectrum, and meanwhile, microalgae growth and carbon sequestration can be further promoted by converting ultraviolet light into blue light; the spectrum conversion effect is enhanced, the overall light energy utilization efficiency of microalgae carbon sequestration is improved, light inhibition is relieved, and the stress resistance of microalgae cells is improved, so that microalgae growth carbon sequestration is promoted, and the development of the microalgae carbon sequestration industry is promoted.

The invention relates to a device and a method for producing a microalgae liquid fertilizer by utilizing monosodium glutamate wastewater, and belongs to the technical field of microalgae fertilizer production devices and methods. Comprising a dilution device, a buffer pool and a pipeline type photobioreactor which are sequentially communicated through a pipeline, a culture medium inlet and a monosodium glutamate wastewater inlet are formed in the dilution device, and a chlorophyll luminoscope, an ultraviolet visible light detector and a water quality tester are installed on an output pipeline of the pipeline type photobioreactor. And the operation of the buffer pool, the tube (channel) type photobioreactor, the chlorophyll luminoscope, the ultraviolet visible light detector and the water quality tester is controlled by the console. According to the method, a culture medium suitable for microalgae growth is prepared by diluting monosodium glutamate wastewater in a certain proportion and adding necessary nutrient elements, chlorella capable of rapidly proliferating in the monosodium glutamate wastewater is cultured by using a photobioreactor, and the chlorella whole-cell sap can promote wheat seedling growth and rooting through tests.

The invention provides an efficient carbon sequestration microalgae culture pond, and belongs to the technical field of microalgae culture. Comprising a culture pond outer wall and a separation wall fixedly connected to the middle of the culture pond outer wall, a microalgae growth space composed of a first straight channel, a first bent channel, a second straight channel and a second bent channel is formed in the culture pond outer wall through the separation wall, and algae liquid is arranged in the microalgae growth space. When the device is used, the stirring assembly drives algae liquid to flow along the annular water channels of the first straight channel, the first bent channel, the second straight channel and the second bent channel, when the stirring assembly drives the algae liquid to the high position of the spoiler, the gravitational potential energy of the algae liquid is increased, and the algae liquid is converted into algae liquid kinetic energy through the gravitational potential energy in the flowing process; due to the fact that the spoilers are designed to have a certain gradient, when the algae liquid reaches a certain flow velocity, laminar flow is changed into turbulent flow, so that algae cells in the algae liquid are frequently exchanged up and down, the photosynthetic efficiency is enhanced, and absorption of carbon dioxide is promoted.

The invention discloses a method for reducing pollution and carbon in rare earth ammonia-nitrogen wastewater by utilizing a microalgae closed reaction. The method comprises the following steps: preparing an ammonia-nitrogen wastewater culture medium, inoculating microalgae, pressurizing CO2 in a reactor, regulating and controlling culture and monitoring and harvesting. According to the invention, the waste gas CO2 discharged in the rare earth production process can be effectively utilized, a cheap carbon source is provided for an ammonia nitrogen biological removal system, meanwhile, carbon reduction and decontamination are realized, and the defect that in the current technical scheme, the biological removal of ammonia nitrogen needs to additionally provide commercial carbon nutrition for the system is overcome; the reactor runs under the micro-positive pressure condition, CO2 gas mass transfer is enhanced, a sufficient carbon source is provided for microalgae growth, system escape of ammonia nitrogen and CO2 is avoided, and the defects that in the current technical scheme, the ammonia nitrogen recycling effect is poor, and ammonia nitrogen escapes are overcome.

The present application relates to the technical field of microalgae carbon fixation, and specifically discloses a microalgae environmental adaptation carbon fixation method based on spiral disturbance flow field enhancement, which comprises the following steps: constructing a column type photobioreactor and setting a spiral disturbance plate, selecting high-efficiency carbon fixation Chlorella sp. which is resistant to NO X , SO X , pre-treating and inoculating, precisely regulating environmental parameters such as light and pH, monitoring the carbon fixation process in real time and regulating abnormally, and realizing cyclic operation by adopting semi-continuous culture. The present application enhances gas-liquid mass transfer by spiral disturbance, combines dynamic adaptation and regulation of multiple environmental parameters, improves CO₂ emission reduction rate and microalgae growth efficiency, optimizes reactor mass transfer characteristics, reduces energy consumption, realizes the collaborative treatment of multiple pollutants, and provides standardized technical support for the industrialization of microalgae carbon fixation.

The utility model relates to the technical field of microalgae culture, in particular to a microalgae culture device. The microalgae culture device comprises a culture frame and a control box, the culture frame is provided with a plurality of culture layers, and each culture layer is provided with a culture assembly. Each culture layer is provided with a light source assembly, and the light source assemblies are located above the culture assemblies and electrically connected with the control box. An algae liquid detection part is arranged in the culture assembly, is connected with the control box and is used for detecting the microalgae growth state and the light environment in the culture assembly. According to the microalgae culture device provided by the utility model, the light source assembly can output optimal growth illumination for culturing microalgae, so that different illumination requirements of the microalgae in each growth stage are met, and the growth of the microalgae is promoted. Meanwhile, the microalgae culture process is controlled by the control box according to detection data of the microalgae liquid detection piece, manual intervention is not needed, and the reliability and stability of illumination adjustment are effectively improved.

The present invention discloses an efficient microalgae cultivation device, belonging to the fields of solar energy utilization and biotechnology. The microalgae cultivation device includes: a culture container filled with microalgae liquid; a light condensing element, the lower part of the light condensing element is immersed in the microalgae liquid, and the light condensing element is used to adjust the sunlight incident on the light condensing element into parallel light or divergent light and then downwardly introduce it into the microalgae liquid to increase the light intensity in the microalgae liquid; and an orientation adjusting member, the orientation adjusting member is used to control the direction of the sunlight incident on the light condensing element. In this application, the sunlight incident on the light condensing element is adjusted into parallel light or divergent light by the light condensing element and then downwardly introduced into the microalgae liquid, increasing the light intensity in the microalgae liquid, ensuring the light source required for microalgae growth, and being not affected by the microalgae density or the depth of the algae liquid at the same time. This application only uses solar energy without the need for electric energy, reducing the cost of microalgae cultivation.

The application discloses a kind of microalgae-tidal flow subsurface wetland enhanced water body pollutant purification device and method, comprising the following steps: when treating contaminated water, contaminated water is introduced from the top of microalgae growth area, when flowing through microalgae growth area, microalgae assimilates and absorbs pollutants, and provides oxygen-rich environment;When the contaminated water flows through the wetland substrate filling area, the fresh high-activity microalgae carried in the water flow and the bacteria form algal-bacterial symbiotic film, and the contaminated water is intensively purified;The purified water flows out from the water outlet;During the purification process of the contaminated water, the water flow velocity of the microalgae growth area is periodically adjusted, and the attached microalgae is periodically flushed, so that it enters the wetland substrate with water flow to replenish microalgae.

This invention discloses a microalgae cell farm control system, control method, and computer-readable storage medium, including a frame; a photovoltaic power supply module, comprising solar panels made of a semi-transparent material, disposed on the outer periphery of the frame as top and side covers, the solar panels being connected to an energy storage unit located within the frame for storing electrical energy; and a photobioreactor unit disposed within the frame, comprising a reactor body for cultivating microalgae. The beneficial effects of this invention are that by setting multiple semi-transparent solar panels on the outer periphery of the frame, placing the reactor body within the frame, and placing a supplementary lighting unit on one side of the reactor body, the supplementary lighting unit utilizes the electrical energy generated by the solar panels to irradiate the reactor body, supplementing the missing spectrum and providing the necessary light conditions for microalgae growth, thereby improving the utilization rate of light energy and increasing the production capacity of microalgae.

The present application belongs to the field of microalgae biotechnology, microalgae culture regulation and high-value lipid bio-manufacturing, and specifically relates to a method for improving microalgae biomass and eicosapentaenoic acid (EPA) yield by regulating amino acids, which takes microalgae capable of synthesizing EPA as a culture object, adds exogenous amino acids or amino acid combinations to the culture system under non-stress culture conditions containing sufficient inorganic nitrogen source, regulates photosynthesis, growth metabolism and lipid synthesis process of the microalgae, and simultaneously improves microalgae biomass and EPA volumetric yield; by adding specific exogenous amino acids or amino acid combinations under the condition of sufficient nutrition culture, the present application realizes synchronous promotion of microalgae growth and EPA accumulation. Different from traditional methods of relying on stress such as nitrogen deficiency to induce lipid accumulation, the present application can improve microalgae biomass, photosynthetic performance, pigment yield and EPA volumetric yield without significantly inhibiting cell growth and photosynthetic activity.

The invention discloses a microalgae biological culture device and method. The culture device comprises a support and a funnel-shaped round cylinder arranged on the support, a pointed cone is arranged in the center of the funnel-shaped round cylinder, flow guide twisted lines are arranged on the pointed cone, a circulating water injection pipe is arranged on the side wall of the funnel-shaped round cylinder, and a culture water input pipe and a microalgae output pipe are arranged at the bottom of the funnel-shaped round cylinder. The culture method comprises the following steps: pumping culture water into a funnel-shaped cylinder through a culture water input pipe until a target volume is reached, inoculating microalgae, and circularly injecting the culture water into the top of the funnel-shaped cylinder from the bottom of the funnel-shaped cylinder through a circulating water injection pipe to form an inward vortex, so that the microalgae grow; and after the growth is finished, closing the circulating water injection pipe, naturally standing, gathering the microalgae concentrated solution to the central position of the funnel-shaped cylinder, and collecting from the microalgae output pipe. According to the invention, through the funnel-shaped cylinder, the circulating water injection pipe and the flow guide twisted lines, the algae-water mixed liquid forms an inward vortex in the funnel-shaped cylinder, no additional energy waste for stirring is needed, and the cost is reduced.

The invention provides an intelligent treatment method for mariculture tail water, and belongs to the technical field of machine learning. By constructing a multi-mode tail water environment-evolution data set, comprehensive perception of a tail water visual image sequence, physicochemical index time sequence data and operation control parameters is realized, and dynamic evolution prediction of a tail water system is carried out based on a virtual environment generation model. Through the steady state identification and mode mining module, the stable operation cluster, the critical boundary and the abrupt change mode of the tail water system can be quantified, control-abrupt change response knowledge is extracted, and a structured basis is provided for optimization decision making. On the basis, a multi-target control optimization model is constructed, efficient regulation and control over the microalgae growth rate, the suspended particle sedimentation rate and the nutritive salt absorption efficiency are achieved, meanwhile, the potential mutation risk is avoided, and steady-state operation of the system is guaranteed. According to the method, intelligentization, precision and multi-objective optimization of the tail water treatment process can be achieved, and efficient and reliable technical support is provided for mariculture tail water ecological management.

The present invention discloses a method and system for resource utilization of carbon dioxide in wine based on microalgae cultivation. The method comprises the following steps: inoculating microalgae into an algae pond, turning on a lighting device, then introducing the carbon dioxide generated by fermentation in a fermentation tank into the algae pond, and introducing a culture solution into the algae pond. After the microalgae grow for a period of time, the high-density microalgae biomass attached to the packing is filtered through a filter screen, and made into algal fertilizer and returned to the vineyard. The low-concentration algae-containing water is introduced into an artificial wetland and discharged after purification. Through the coupling of the fermentation tank, the algae pond and the artificial wetland, on the one hand, the microalgae are used to fix carbon dioxide to produce algal fertilizer products and return them to the vineyard. On the other hand, the microalgae can also preliminarily treat the wastewater from wine brewing, and the wastewater from microalgae cultivation is deeply treated by the artificial wetland, ultimately achieving low emissions or even zero emissions of the system.

The utility model relates to the field of microalgae cultivation, in particular to a high-precision illumination adjusting device. The high-precision illumination adjusting device comprises lamp beads, the lamp beads have different colors, a lampshade wraps the lamp beads on the first face of a shell, the lampshade is ultrasonically welded to the first face of the shell, a fixing part is fixedly installed on the second face of the shell, and the fixing part is arranged on the second face of the shell. The fixing part is a fixing column with threads, an adjustable buckle structure or a magnetic attraction type adsorption part, the illumination adjusting device further comprises switches and an adjusting knob, each switch controls the multiple lamp beads with the same color, and the adjusting knob controls the brightness of all the lamp beads at the same time. According to the utility model, illumination with proper wavelength and intensity can be provided according to different growth stages of microalgae, and the culture efficiency and quality are improved.

The invention discloses a method for producing high-quality protein raw material microalgae. By combining a reduction product formic acid driven by carbon dioxide clean energy with edible microalgae culture, microalgae growth and protein synthesis are enhanced. The method specifically comprises the following steps: carrying out adaptive evolution of microalgae by using 20-50mM of low-concentration formate, culturing under an illumination condition by using 50-300mM of formate as an auxiliary carbon source, and finally harvesting the microalgae biomass of which the protein content exceeds 30% and the amino acid composition meets the high-quality protein requirements of international grain and agricultural tissues, high-quality protein raw materials of food and feed can be used. The method has a remarkable application prospect in the field of green non-grain high-quality protein raw material production.

The invention discloses an ecological bait production method based on a food chain, which comprises the following steps: S1, mixing wine brewing enzyme liquid and culture tail water in proportion, and stirring to form a nutrient medium required by microalgae growth; s2, conveying the nutrient medium into a microalgae culture module, and regulating and controlling illumination and dissolved oxygen conditions; part of microalgae is conveyed to the plankton breeding unit to cultivate plankton to construct a live bait chain; s3, tail water generated by breeding flows back to the plankton breeding unit to serve as a nutrition supplement source of plankton, and closed-loop circulation is achieved.

The invention discloses a micro-fluidic chip for microalgae growth stress detection and a microscopic image analysis method, and belongs to the technical field of cell monitoring, the micro-fluidic chip comprises an inlet, the right side of the inlet is connected with a cell leading-in area, the right side of the cell leading-in area is connected with a cell arrangement area, the cell arrangement area comprises at least one micro-convex flow channel, and the micro-convex flow channel is connected with the micro-convex flow channel. The right port of the micro-convex flow channel is connected with a cell growth area, the cell growth area comprises a narrow flow channel and a culture flow channel arranged in the narrow flow channel, the cell growth area is connected with a discharged liquid collection area, the right end of the discharged liquid collection area is connected with an outlet, and a microscopic camera device is arranged above the culture flow channel. According to the micro-fluidic chip for detecting the growth stress of the microalgae and the microscopic image analysis method, a micro-fluidic environment is constructed on the micro-chip, fine regulation and control on the growth environment of the microalgae cells are realized, the form and behavior change of the microalgae cells can be observed in real time and at high resolution, and the micro-fluidic chip can be used for detecting the growth stress of the microalgae in combination with the microscopic image and the analysis method. The detection and the analysis on the microalgae cell growth extrusion stress are realized.

The present application relates to sewage treatment technical field, especially to a kind of organic sewage device of biodegradation and electrocatalytic degradation synergic treatment, including box, reactor is equipped in box, reactor is including two electrode sheets, two electrode sheets are formed with sealed cavity between, cavity is filled with sponge filling material, one electrode sheet outside interval is provided with aluminum plate, aluminum plate is connected power supply anode, electrode sheet close to aluminum plate is connected power supply cathode, electrode sheet away from aluminum plate is connected power supply anode;The present application uses microalgae to absorb inorganic salt in sewage, and carbon dioxide generated by electrode catalytic oxidation can be directly absorbed by microalgae in sealed cavity to promote microalgae growth, oxygen released by microalgae growth can be used by electrolytic catalysis process, can greatly improve the efficiency of electrolytic catalysis, oxygen and carbon dioxide generated in process can promote each other, produce synergistic effect, and oxygen and carbon dioxide can be completely utilized in closed system.

The application provides a mariculture tail water intelligent processing method, and belongs to the technical field of machine learning; by constructing a multi-modal tail water environment-evolution dataset, comprehensive perception of tail water visual image sequences, physicochemical index time series data and operation control parameters is realized, and tail water system dynamic evolution prediction is carried out based on a virtual environment generation model. Through a steady state identification and mode mining module, the application can quantize stable operation clusters, critical boundaries and mutation modes of the tail water system, and extract control-mutation response knowledge, thereby providing structured basis for optimization decision. On this basis, the application constructs a multi-objective control optimization model, realizes efficient regulation and control of microalgae growth rate, suspended particle settling rate and nutrient salt absorption efficiency, simultaneously avoids potential mutation risks, and guarantees stable operation of the system. The method can realize intelligentization, precision and multi-objective optimization of the tail water processing process, and provides efficient and reliable technical support for ecological management of mariculture tail water.

The application discloses a method for greening gobi desert by using microalgae crust and application thereof, and belongs to the technical field of ecological restoration. The method mainly adopts a combination of microalgae spraying liquid and engineering treatment method. In the preparation of the microalgae spraying liquid, indigenous microalgae and known domesticated desert algae are mixed and cooperatively cultured to prepare a spraying agent, and then soil bacillus is added before spraying. The engineering treatment method mainly forms concave-convex structures by building soil ridge bags and excavating trenches, increases the specific surface area of the microalgae spraying liquid by using the uneven land surface, slows down the evaporation speed of the microalgae spraying liquid by using the concave land, and then promotes the growth rate and adaptability of the microalgae, and improves the crust efficiency. In addition, the repaired soil needs to be added with nutrient functional organic fertilizer and / or nano conditioner in advance. The application can improve the vegetation coverage from almost zero to about 60%, can significantly improve the ecological environment of the gobi desert, and can obviously reduce the soil salinity and increase the soil water retention capacity.

The application discloses a method for promoting total nitrogen removal rate of an anaerobic ammonia oxidation system based on illumination control. The method is as follows: inoculating anaerobic ammonia oxidation granular sludge in a SBR reactor, under the conditions that the temperature is 30-33 DEG C and the pH is 7.7-8.3, adding nitrogen-containing wastewater containing ammonia nitrogen about 40-50 mg / L and nitrite nitrogen about 50-60 mg / L, applying different illumination conditions (visible green light and visible red light) to the reactor during operation and adjusting the illumination time length, promoting the growth of microalgae by using green light and red light, constructing a symbiotic system of microalgae and anaerobic ammonia oxidation bacteria, influencing the biochemical activity of anaerobic ammonia oxidation bacteria, and effectively improving the denitrification performance of the anaerobic ammonia oxidation reactor. The visible green light can increase the total nitrogen removal rate of the anaerobic ammonia oxidation system by 3.38%-27.62%, and the visible red light can increase the total nitrogen removal rate of the anaerobic ammonia oxidation system by 2.95%-19.44%.

The utility model discloses a microalgae production monitoring device which comprises a fixing assembly and a monitoring assembly, the monitoring assembly comprises an LED lamp set, a color sensor, a controller and an audible and visual alarm, the controller is electrically connected with the color sensor and the audible and visual alarm, the fixing assembly comprises a shading cylinder, and the shading cylinder is electrically connected with the LED lamp set. A pipeline mounting channel is arranged in the center of the interior of the shading cylinder, a monitoring opening is formed in one side of the center of the pipeline mounting channel, light transmitting openings are formed in the positions, located on the two sides of the monitoring opening, of the center of the pipeline mounting channel, and the detection end of a color sensor is mounted at the monitoring opening. The growth state of the microalgae can be accurately reflected, so that the real-time monitoring of the microalgae growth process is realized. Compared with a traditional naked eye observation method or an indirect parameter speculation method, the monitoring device can rapidly and accurately obtain microalgae growth state information, and the monitoring efficiency is greatly improved.

The invention belongs to the technical field of microalgae biology and culture, and particularly relates to a method for promoting microalgae growth by using a pharmaceutical product, which comprises the following steps: activating microalgae on a solid flat plate, inoculating the activated microalgae into a liquid culture medium, adding the pharmaceutical product at the initial stage of microalgae growth, placing in a constant-temperature shaking table, and carrying out illumination culture. According to the method, different types of pharmaceutical products with different concentrations are added into the microalgae, the influence of the addition of the different types of pharmaceutical products with different concentrations on the growth promotion of the microalgae is analyzed, the biomass of the chlorella can be rapidly increased, and the method has important significance on the large-scale production of the microalgae.

The utility model relates to the technical field of cultivation devices, in particular to a selenium-containing protein carotenoid microalgae cultivation device. Aiming at the problem that the growth of microalgae is limited due to the change of external illumination and temperature and the inappropriate change of the concentration of carbon dioxide, so that the content of selenoprotein carotenoid is reduced, the following technical scheme is provided: the device comprises a box body, the top of the box body is rotatably connected with a box cover, and a cultivation groove is formed in the box body; a cultivation tank is placed in the cultivation groove, and microalgae are contained in the cultivation tank; the constant-temperature heating unit is mounted in the box body, and the top of the constant-temperature heating unit is in contact with a cultivation tank; the lamp strip is mounted on the inner wall of the cultivation tank and surrounds the outer ring of the cultivation tank. The device can automatically adjust the illumination, the temperature and the carbon dioxide content of microalgae breeding, improves the growth efficiency of microalgae, and ensures the growth of microalgae, the accumulation of nutritional ingredients and the final harvesting efficiency.

This invention discloses an innovative method for predicting microalgae growth curves. Addressing the problem of predicting microalgae growth curves with small sample data, this method combines the Box-Behnken design method, selects key environmental factors, collects microalgae growth curve samples with minimal environmental diversity, and incorporates light-dark cycle variables to construct a refined microalgae growth kinetic model to simulate growth changes under natural light conditions, generating a large amount of high-quality simulation data. This invention utilizes the advanced Two-Stage TrAdaboost.R2 algorithm to merge simulation output with scarce experimental observation data for LSTM model training, aiming to enhance the model's ability to predict microalgae growth trends under complex lighting conditions while reducing the dependence of deep learning models on large-scale field measurement data. This method provides the industry with a new strategy for optimizing microalgae cultivation parameters and achieving precise control, effectively promoting the growth of production capacity and efficiency improvement in the microalgae industry.

The invention discloses a membrane coupling type microalgae reactor in the field of sewage treatment, and the membrane coupling type microalgae reactor comprises a water supply assembly used for supplying to-be-treated sewage; the first reactor is communicated with the water outlet of the water supply assembly, the first reactor comprises a rotatable biological membrane structure and an aeration structure, and the sewage is primarily treated through a biological membrane; the second reactor is communicated with the first reactor; the ceramic membrane separation unit is communicated with the second reactor and is used for carrying out cross-flow filtration on sewage discharged from the second reactor so as to realize collection of a biological membrane and microalgae and conveying the biological membrane back into the first reactor; the invention further discloses a sewage treatment method. The sewage treatment device has the beneficial effects that microalgae growth and biomass accumulation can be enhanced through two-stage mixed culture of the first reaction cylinder body and the second reaction cylinder body, illumination of the biological modified filler is more uniform, the sewage treatment performance is improved, and the device is lower in energy consumption.

To promote the growth of microalgae.SOLUTION: The present invention provides a microorganism belonging to any genus selected from Rhodococcus, Xanthobacter, Ancylobacter, Shewanella, or Aeromonas. The microorganism may be Rhodococcus cerastii of the genus Rhodococcus, Xanthobacter flavus of the genus Xanthobacter, or Ancylobacter rudongensis of the genus Ancylobacter. The microorganism may be intended for promoting the growth of cyanobacteria, green algae, gray algae or euglenoids.SELECTED DRAWING: Figure 4

The invention relates to a microalgae culture medium based on plant extracts and a preparation method thereof, and belongs to the technical field of algae culture media, the microalgae culture medium specifically comprises the following raw materials: blueberry peel extracts, cellulose nanofibers, a carbon source, a system stabilizer, inorganic salt, trace elements and sterile seawater; the carbon source is obtained by mixing glycerol and pretreated cane molasses according to a mass ratio of 1: (2-2.5). In the preparation method, processes in different components are coupled, the cellulose nanocrystals are extracted in an acid environment, and meanwhile, the extraction amount of the cellulose nanocrystals and the activity of anthocyanin and the like are regulated and controlled through the pH value, so that the characteristics of stability, oxidation resistance and the like of the components in the extraction process are maintained. The cane molasses is pretreated, and then the cane molasses and glycerol are jointly used as a carbon source, and the cane molasses and the blueberry peel extract have a synergistic effect in the aspect of promoting microalgae growth.