Air purification device and method for generating negative oxygen ions based on microalgae photosynthesis

Abstract

The invention discloses an air purification device and method for generating negative oxygen ions based on microalgae photosynthesis, and belongs to the technical field of microalgae biologication.The air purification device comprises an incubator, a protective cover, a culture light source, a negative oxygen ion generator and a fan, and a plurality of ventilation holes are formed in the protective cover. The air purification method is based on a natural purification mechanism of microalgae photosynthesis, and the problem that pollutants cannot be synchronously reduced and active ingredients cannot be synchronously improved in the traditional technology is creatively solved; according to the system, the physiological characteristics of carbon sequestration and oxygen release of microalgae are utilized, COs are efficiently removed, negative oxygen ions are naturally excited, the passive mode of purification without gain in the traditional technology is thoroughly subverted, the cycle can be restarted infinitely only by supplementing micronutrient salt through self-balancing metabolism of the algae and closed-loop regeneration of the culture solution, and the method is simple and convenient to operate. Therefore, office buildings, residences and even underground spaces can continuously obtain forest-level'air vitamin 'supply, and a self-maintenance healthy air ecological system with zero material consumption, zero ozone and zero site limitation is constructed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microalgae biotechnology, and particularly relates to an air purification device and method based on the photosynthesis of microalgae to produce negative oxygen ions. BACKGROUND

[0002] With the acceleration of industrialization and the expansion of urbanization, air pollution problems are becoming increasingly serious, especially the concentration of particulate matter (PM2.5, PM10), volatile organic compounds (VOCs) and carbon dioxide (CO2) in indoor environment exceeds the standard, which seriously threatens human health and quality of life. Although traditional air purification technologies (such as physical filtration, electrostatic precipitation, activated carbon adsorption, photocatalytic oxidation, etc.) have certain effects, they generally have limitations such as high energy consumption, the need for regular replacement of consumables, the possibility of secondary pollution (such as ozone), and the inability to effectively solve the accumulation of CO2. Especially noteworthy is that these technologies mainly focus on the removal of pollutants, but fail to actively increase the active ingredients in the air that are beneficial to human health.

[0003] Negative oxygen ions are recognized as "air vitamins" and have significant health benefits such as settling particulate matter, inhibiting bacteria and viruses, promoting metabolism, and regulating the nervous system. In natural environments, such as waterfalls, forests, and after thunderstorms, the concentration of negative oxygen ions is relatively high. However, in modern cities and enclosed indoor spaces, the concentration of negative oxygen ions is often far below the beneficial level. Therefore, there is an important practical need and broad application prospect for developing an air purification technology that reduces CO2 concentration and actively, continuously, and safely increases negative oxygen ions. The International Union of Atmospheric Commission points out that humans need about 13 billion negative oxygen ions per day, while modern human activity spaces can only provide 1-200 million, and due to the adsorption of heating, air conditioning, fibers, air pollutants, building materials, and other negative oxygen ions, the actual negative oxygen ions available to the human body are very few.

[0004] Microalgae are a class of single-cell or multi-cell eukaryotes (such as green algae, diatoms) and prokaryotes (such as cyanobacteria / cyanobacteria) that can perform photosynthesis. Its core physiological characteristics lie in its ability to utilize light energy, water, and environmental CO2 for photosynthesis, synthesizing its own organic matter, and releasing oxygen. This process itself has significant air purification potential: on the one hand, it can directly fix and consume CO2 that leads to greenhouse effect and indoor air quality decline; on the other hand, the released O2 is an indispensable gas for maintaining life. Negative oxygen ions can improve lung function, and after inhaling negative oxygen ions for 30 minutes, lung oxygen uptake increases by about 20%, and carbon dioxide removal increases by about 14.5%. Therefore, using microalgae to construct an air purification system not only can achieve CO2 fixation and O2 release to improve air quality basic indicators, but also can increase the concentration of negative oxygen ions in the environment through its natural physiological activity, providing a new way of green, sustainable, and health-promoting air purification. SUMMARY

[0005] The purpose of the present application is to provide an air purification device and method based on microalgae photosynthesis to generate negative oxygen ions, which solves the problems of various deficiencies existing in traditional air purification technology.

[0006] To solve the above technical problems, the present application adopts the following technical solutions:

[0007] The air purification device based on microalgae photosynthesis to generate negative oxygen ions comprises a culture box, a protective cover is arranged above the culture box, a plurality of ventilation holes are arranged on the protective cover, a culture light source, a negative oxygen ion generator and a fan are arranged inside the protective cover, the culture light source is used to irradiate microalgae to promote photosynthesis, the negative oxygen ion generator is used to electrically shock oxygen in the culture box to form negative oxygen ions, and the fan is used to drive air flow.

[0008] The air purification method based on microalgae photosynthesis to generate negative oxygen ions adopts the air purification device as described above to purify air, which comprises the following steps:

[0009] Microalgae are cultured in the culture box, and nutrient elements required by the microalgae are added into the culture box;

[0010] The culture temperature of the culture box and the light intensity of the culture light source are set, and the culture light source is used to irradiate the microalgae;

[0011] The fan is started, air enters the culture space from the ventilation holes, carbon dioxide in the air is absorbed by photosynthesis of the microalgae, and oxygen is generated;

[0012] The negative oxygen ion generator is started, the negative oxygen ion generator is used to electrically shock oxygen generated by photosynthesis of the microalgae, so that the oxygen forms negative oxygen ions, the concentration of negative oxygen ions in the culture box is increased, air in the culture space is driven to the ventilation holes under the action of the fan, the air carries negative oxygen ions and is discharged outward, and air purification is realized.

[0013] Further, the surface area of the air purification device is 0.2-0.6m 2 .

[0014] Further, the culture light source is arranged as red light, blue light and white light.

[0015] Further, the light intensity of the air purification device is set to 1000-3000 lux.

[0016] Further, the temperature of the air purification device is set to 15-30℃.

[0017] Furthermore, the nutrients include phosphorus, nitrogen, and carbon sources, with different proportions of phosphorus, nitrogen, and carbon sources.

[0018] Furthermore, the phosphorus source, nitrogen source, and carbon source are respectively set as potassium dihydrogen phosphate / potassium argon phosphate, nitrate / urea, and sodium argon carbonate / sodium carbonate.

[0019] Furthermore, the ratio of the phosphorus source, nitrogen source, and carbon source is 1-3:5-10:22-40 (g / L).

[0020] Furthermore, after 5-7 days of use, the air purification device can harvest the suspended microalgae on the surface and restart the cultivation cycle.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0022] The air purification method described in this invention is based on the natural purification mechanism of microalgae photosynthesis, innovatively solving the problem that traditional technologies cannot simultaneously reduce pollutants and enhance active ingredients. Through an indoor-deployed air purification device, microalgae are transformed into "living air purification modules" that can be embedded in any building space. The system utilizes the physiological characteristics of microalgae in carbon fixation and oxygen release, efficiently removing CO2 while naturally stimulating negative oxygen ions, completely overturning the passive "purification without enhancement" mode of traditional technologies. Its added value lies in its permanent cycle capability. Through the algae's self-balancing metabolism and closed-loop regeneration of the culture medium, the cycle can be restarted indefinitely with only the addition of trace nutrients, allowing office buildings, residences, and even underground spaces to continuously receive a forest-level supply of "air vitamins," constructing a self-sustaining healthy air ecosystem with zero consumables, zero ozone, and zero site limitations. The air purification device described in this invention can be applied to various places such as homes, nursing homes, and offices. Its specific size can be determined according to actual needs, ranging from a large device matching the indoor space to a small handheld device. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of an air purification device based on microalgae photosynthesis to generate negative oxygen ions according to Embodiment 1 of the present invention;

[0025] Figure 2 This is a cross-sectional view of an air purification device based on microalgae photosynthesis to generate negative oxygen ions according to Embodiment 1 of the present invention;

[0026] Figure 3 This is a bottom view of the protective cover according to Embodiment 1 of the present invention;

[0027] Figure 4The indoor negative oxygen ion concentration of the air purification device provided in Embodiment 1 of the present invention under different light conditions;

[0028] Figure 5 The indoor negative oxygen ion concentration of the air purification device provided in Embodiment 1 of the present invention under different light intensities;

[0029] Figure 6 The indoor negative oxygen ion concentration of the air purification device provided in Embodiment 1 of the present invention at different temperatures;

[0030] Figure 7 The indoor negative oxygen ion concentration of the air purification device provided in Embodiment 1 of the present invention under different nutrient elements;

[0031] Figure 8 This is a three-dimensional structural schematic diagram of an air purification device based on microalgae photosynthesis to generate negative oxygen ions according to Embodiment 2 of the present invention;

[0032] Figure 9 This is a bottom view of the protective cover according to Embodiment 2 of the present invention.

[0033] Explanation of the attached diagram labels: 1. Incubator; 2. Protective cover; 3. Incubation light source; 4. Negative oxygen ion generator; 5. Fan. Detailed Implementation

[0034] Example 1

[0035] like Figures 1-3 As shown, an air purification device based on the generation of negative oxygen ions by microalgae photosynthesis includes an incubator 1, a protective cover 2 is provided above the incubator 1, the protective cover 2 has several ventilation holes, and a cultivation light source 3, a negative oxygen ion generator 4, and a fan 5 are installed inside the protective cover 2. The cultivation light source 3 is used to irradiate microalgae to promote their photosynthesis, the negative oxygen ion generator 4 is used to electrically agitate the oxygen in the incubator 1 to form negative oxygen ions, and the fan 5 is used to drive airflow.

[0036] Specifically, in this embodiment, the air purification device is designed to be rectangular. The protective cover 2 can be snapped onto the incubator 1, or it can be connected to the incubator 1 via fasteners or other components.

[0037] An air purification method based on the generation of negative oxygen ions through microalgae photosynthesis, using the air purification device described above to purify the air, includes the following steps:

[0038] Microalgae are cultured in the culture box 1, and the nutrients required by the microalgae are added to the culture box 1.

[0039] Set the culture temperature of the incubator 1 and the light intensity of the culture light source 3, and use the culture light source 3 to irradiate the microalgae;

[0040] Start the fan 5 to allow air to enter the cultivation space through the ventilation hole. The carbon dioxide in the air is absorbed by the microalgae through photosynthesis to produce oxygen.

[0041] The negative oxygen ion generator 4 is activated, and the oxygen produced by the photosynthesis of microalgae is electrolyzed by the negative oxygen ion generator 4 to form negative oxygen ions, thereby increasing the concentration of negative oxygen ions in the incubator 1. Under the action of the fan 5, the air in the incubation space is driven to flow to the ventilation hole, so that the air carrying negative oxygen ions is discharged to the outside, thereby purifying the air.

[0042] Specifically, the surface area of ​​the air purification device is 0.2–0.6 m². 2 .

[0043] The cultivation light source 3 is set to red light, blue light and white light, wherein the red light is 625±10nm, the blue light is 450±10nm or the white light is the full spectrum of 400–700nm.

[0044] The light intensity of the air purification device is set to 1000-3000 lux.

[0045] The temperature of the air purification device is set to 15-30℃.

[0046] The nutrients include phosphorus, nitrogen, and carbon sources, with varying proportions of each.

[0047] The phosphorus source, nitrogen source, and carbon source are respectively set as potassium dihydrogen phosphate / potassium argon phosphate, nitrate / urea, and sodium argon carbonate / sodium carbonate.

[0048] The ratio of phosphorus source, nitrogen source and carbon source is 1-3:5-10:22-40 (g / L).

[0049] The air purification device uses Spirulina as the microalgae; the microalgae growth rate is 1.5 g / m³. 2 / d.

[0050] After 5-7 days of use, the air purification device can harvest the suspended microalgae on the surface, restart the cultivation cycle, and increase the production of negative oxygen ions.

[0051] The concentration of negative oxygen ions in the room was measured using a negative oxygen ion detector, and the air quality was assessed according to the industry standard "QX / T 380-2017 Air Negative (Oxygen) Ion Concentration Level".

[0052] Methods for measuring negative oxygen ions:

[0053] A calibrated negative ion detector (CT1) was used in a constant temperature and humidity environment. The detector probe was placed 0.5-1.0 m from the reactor outlet, and at least three sets of ion concentrations were recorded over 120 seconds using a continuous sampling mode (sampling interval ≤ 10 s). The arithmetic mean was taken as the stable output value, characterized by negative ion concentration per unit volume (ions / cm³), with the relative standard deviation (RSD) controlled within ±5%. The negative ion concentration was measured under different light conditions, light intensities, temperatures, and nutrient elements to determine the air quality level.

[0054] Example 1

[0055] Culture system setup: In an area of ​​0.2 m² 2 Microalgae with high negative oxygen ion production were cultured in a culture volume;

[0056] Light source settings: Culture light source 2 provides blue light irradiation into incubator 1;

[0057] Light intensity setting: The light intensity setting of this air purifier is controlled at 1000 lux;

[0058] Temperature setting: The incubation temperature of this air purification device is set to 20℃;

[0059] Nutritional element settings: The ratio of potassium dihydrogen phosphate, nitrate and sodium carbonate (baking soda) added to this air purifier is 1:10:20 (g / L).

[0060] The concentration of negative oxygen ions in the room was measured using a negative oxygen ion detector, and the air quality was assessed according to the industry standard "QX / T 380-2017 Air Negative (Oxygen) Ion Concentration Level".

[0061] The air purification device used in this embodiment produces 4333 negative oxygen ions / cm³. 3 The air quality level is Class I, with high concentrations and fresh air.

[0062] Example 2

[0063] Culture system setup: In an area of ​​0.4 m² 2 Microalgae with high negative oxygen ion production were cultured in a culture volume;

[0064] Light source settings: Cultivation light source 2 provides red light irradiation into incubator 1;

[0065] Light intensity setting: The light intensity setting of this air purifier is controlled at 2000 lux;

[0066] Temperature setting: The incubation temperature of this air purification device is set to 15℃;

[0067] Nutritional element settings: The ratio of potassium dihydrogen phosphate, nitrate and sodium carbonate (baking soda) added to this air purifier is 2:5:20 (g / L).

[0068] The concentration of negative oxygen ions in the room was measured using a negative oxygen ion detector, and the air quality was assessed according to the industry standard "QX / T 380-2017 Air Negative (Oxygen) Ion Concentration Level".

[0069] The air purification device used in this embodiment produces 4812 negative oxygen ions / cm³. 3 The air quality level is Class I, with high concentrations and fresh air.

[0070] Example 3

[0071] Culture system setup: In an area of ​​0.6 m² 2 Microalgae with high negative oxygen ion production were cultured in a culture volume;

[0072] Light source settings: Culture light source 2 provides white light to the incubator 1;

[0073] Light intensity setting: The light intensity setting of this air purifier is controlled at 3000 lux;

[0074] Temperature setting: The incubation temperature of this air purification device is set to 25℃;

[0075] Nutritional element settings: The ratio of potassium dihydrogen phosphate, nitrate and sodium carbonate (baking soda) added to this air purifier is 1:5:25 (g / L).

[0076] The concentration of negative oxygen ions in the room was measured using a negative oxygen ion detector, and the air quality was assessed according to the industry standard "QX / T 380-2017 Air Negative (Oxygen) Ion Concentration Level".

[0077] The air purification device used in this embodiment produces 5500 negative oxygen ions / cm³. 3 The air quality level is Class I, with high concentrations and fresh air.

[0078] The air purification device combines microalgae biotechnology with the indoor environment, making it as easy to cultivate as indoor potted plants. It continuously releases 5,500 forest-level negative oxygen ions per cubic centimeter, creating an ecosystem that integrates "pollution purification, oxygen regeneration, and health enhancement".

[0079] like Figures 4-7 The figures show the indoor negative oxygen ion concentrations under different colors of light, different light intensities, different temperatures, and different nutrient elements.

[0080] Furthermore, the air purification device used in the air purification method described in this invention can also be a flat-plate photobioreactor with a non-aeration design.

[0081] Example 2

[0082] like Figures 8-9 As shown, this embodiment improves the shape of the air purification device, making it cylindrical. The protective cover 2 can be snapped onto the incubator 1, or it can be threaded onto the incubator 1. Alternatively, the protective cover 2 can be connected to the incubator 1 via a locking mechanism or other components.

[0083] When the cross-section of the protective cover 2 is set to a circle, the cultivation light source 3 can be set as two parallel light sources or as a ring light source, which can be selected according to the actual situation.

[0084] The shape of the air purification device can be designed according to the actual situation.

[0085] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An air purification device based on the generation of negative oxygen ions through microalgae photosynthesis, characterized in that: The incubator includes an incubator (1), and a protective cover (2) is provided above the incubator (1). The protective cover (2) has several ventilation holes. Inside the protective cover (2) are a cultivation light source (3), a negative oxygen ion generator (4), and a fan (5). The cultivation light source (3) is used to irradiate microalgae to promote their photosynthesis. The negative oxygen ion generator (4) is used to generate negative oxygen ions by electrolyzing the oxygen in the incubator (1). The fan (5) is used to drive airflow.

2. An air purification method based on the generation of negative oxygen ions through microalgae photosynthesis, comprising purifying the air using the air purification device as described in claim 1, characterized in that: Includes the following steps: Microalgae are cultured in the culture box (1), and the nutrients required by the microalgae are added to the culture box (1); Set the culture temperature of the incubator (1) and the light intensity of the culture light source (3), and use the culture light source (3) to irradiate the microalgae; Start the fan (5) to allow air to enter the cultivation space through the ventilation hole. The carbon dioxide in the air is absorbed by the photosynthesis of the microalgae to produce oxygen. The negative oxygen ion generator (4) is started, and the negative oxygen ion generator (4) is used to electrolyze the oxygen produced by the photosynthesis of microalgae, so that the oxygen forms negative oxygen ions, increasing the concentration of negative oxygen ions in the incubator (1). Under the action of the fan (5), the air in the incubation space is driven to flow to the ventilation hole, so that the air carrying negative oxygen ions is discharged to the outside, thereby purifying the air.

3. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: The air purification device has a surface area of ​​0.2–0.6 m². 2 .

4. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: The culture light source (3) is set to red light, blue light and white light.

5. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: The light intensity of the air purification device is set to 1000-3000 lux.

6. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: The temperature of the air purification device is set to 15-30℃.

7. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: The nutrients include phosphorus, nitrogen, and carbon sources, with varying proportions of each.

8. The air purification method based on the generation of negative oxygen ions through microalgae photosynthesis according to claim 7, characterized in that: The phosphorus source, nitrogen source, and carbon source are respectively set as potassium dihydrogen phosphate / potassium argon phosphate, nitrate / urea, and sodium argon carbonate / sodium carbonate.

9. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 7, characterized in that: The ratio of phosphorus source, nitrogen source and carbon source is 1-3:5-10:22-40 (g / L).

10. The air purification method based on the generation of negative oxygen ions by microalgae photosynthesis according to claim 2, characterized in that: After 5-7 days of use, the air purification device can harvest the suspended microalgae on the surface and restart the cultivation cycle.

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