KR102365307B1 - Microalgal photoculture and Aquafarm hybrid system using urban building - Google Patents

Abstract

The present invention is supplied with exhaust gas to photo-cultivate microalgae, a microalgae photo-cultivation unit installed in a building window, an aqua farm installed in a building window to cultivate fish, and biomass using the material generated in the light-culture unit It provides an urban building-type microalgae light culture and aqua farm hybrid system, comprising a biomass extraction unit for extracting, and manufacturing the extraction residue extracted from the biomass extraction unit into pellets and supplying it as feed for aqua farm .

Description

Urban building type microalgae photoculture and aqua farm hybrid system {Microalgal photoculture and Aquafarm hybrid system using urban building}

The embodiment relates to an urban building-type microalgae photoculture and aqua farm hybrid system. More specifically, it relates to an urban building-type microalgae light culture and aqua farm hybrid system that connects smart farms and aqua farms while culturing microalgae in urban power plants or buildings.

When the exhaust gas of an urban power plant is supplied to a photoreactor in which microalgae are present, microalgae, a raw material for high-value substances (antioxidants), is treated as a biological conversion that reduces greenhouse gases (CO ₂ ) through photosynthesis while receiving sunlight _. biomass will be produced.

The produced biomass can be extracted and separated after harvest to produce health food or cosmetic raw materials using antioxidants ( _astyxanthin ), etc.

However, because the microalgal culture system generally used takes up a large area in the form of plastic raceway ponds or photoreactors made of glass or polymer film, it is difficult to apply it to a narrow space such as an urban power plant or building. It is very difficult, and in order to apply it to a building, it is necessary to use it in the form of a glass greenhouse after performing the lower support construction on the upper part of the roof.

Republic of Korea Patent Registration No. 10-1404223.

The embodiment aims to reduce the production cost of the reactor by using a double-glazed microalgae light culture and aqua farm reactor in a downtown building window.

In addition, it aims to reduce carbon dioxide contained in exhaust gas emitted from urban power generation facilities or building boilers.

In addition, the purpose is to utilize the culture solution or feces discharged from each process as a resource so that the entire resource is utilized.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the following description.

An embodiment of the present invention, the microalgae light culture by receiving exhaust gas, the microalgae light culture unit installed in the window of the building; Aqua farm installed in a building window to cultivate fish; and a biomass extraction unit for extracting biomass by using the material generated in the light culture unit, wherein the extraction residue extracted from the biomass extraction unit is manufactured into pellets and supplied as feed for aqua farm provides an urban building-type microalgae light culture and aqua farm hybrid system.

Preferably, the light culture unit is installed on the double-glazed window of the building, the outer wall window of the building may be characterized in that the light transmittance is adjusted according to the state of the microalgae.

Preferably, the aqua farm is installed on the double-glazed window of the building, and the outer wall window of the building may be characterized in that it is adjusted according to the species of the fish.

Preferably, the oxygen produced in the microalgae light culture unit may be characterized in that it is supplied to the aqua farm.

Preferably, a smart farm that is hydroponically grown is provided on the roof of the building, and exhaust gas is supplied to the smart farm.

Preferably, a waste tank for storing fish wastewater and feces generated in the aqua farm; It may further include a filter sterilization unit for filtering and sterilizing the wastewater stored in the waste tank, wherein the wastewater sterilized by the filter and sterilization unit is injected into the light culture unit.

Preferably, an anaerobic digestion tank for digesting the feces of the fish extracted from the waste tank; It may further include a cogeneration unit that generates electricity using the methane generated in the anaerobic digestion tank.

Preferably, it further comprises an oxygen tank for storing the oxygen produced by the biomass extraction unit, and the oxygen stored in the oxygen tank is supplied to the aqua farm by adjusting the injection amount.

Preferably, the light transmittance of the light culture unit may be characterized in that it is controlled by distinguishing between the proliferation step and the induction step of the microalgae.

Preferably, the microalgal growth step may be characterized in that the light transmittance is set in the range of 10 to 50%, and the induction step is set in the range of 50 to 100%.

Preferably, the electric power generated by the cogeneration unit may be supplied to the building or the light culture unit.

According to the embodiment, by making the urban building window into a double-glazed microalgae light culture and aqua farm reactor, the space can be reduced by 1/10 or more compared to the existing one, and the production cost of the reactor can be reduced by about 1/5 compared to the culture scale.

In addition, there is an effect of reducing carbon dioxide in exhaust gas generated from urban power generation facilities or building boilers.

In addition, there is an effect that biomass, wastewater and feces from each facility can be utilized as resources.

Various and advantageous advantages and effects of the present invention are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 is a structural diagram of an urban building-type microalgae light culture and aqua farm hybrid system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between the embodiments. It can be used by combining or substituted with .

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as “at least one (or more than one) of A and (and) B, C”, it is combined with A, B, and C It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on “above (above) or under (below)” of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as “upper (upper) or lower (lower)”, the meaning of not only the upward direction but also the downward direction based on one component may be included.

Hereinafter, the embodiment will be described in detail with reference to the accompanying drawings, but the same or corresponding components are given the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

1, in order to clearly understand the present invention conceptually, only the main characteristic parts are clearly shown, and as a result, various modifications of the illustration are expected, and it is not necessary that the scope of the present invention be limited by the specific shape shown in the drawings. none.

1 is a structural diagram of an urban building-type microalgae light culture and aqua farm hybrid system according to an embodiment of the present invention.

1, the urban building 200 type microalgae light culture and aqua farm hybrid system according to an embodiment of the present invention includes an exhaust gas supply unit 100, a microalgae light culture unit 210, an aqua farm 220, It may include a smart farm 240 and a biomass extractor 250 .

The exhaust gas supply unit 100 may supply the exhaust gas produced in the urban power plant to the microalgae light culture unit 210 and the smart farm 240 of the building 200 .

In the present invention, the microalgae light culture unit 210 , the smart farm 240 and the aqua farm 220 may be installed in one building 200 , but the present invention is not limited thereto and may be installed in a plurality of buildings 200 . .

The microalgae light culture unit 210 receives exhaust gas to light-culture microalgae, and may be installed in a window of the building 200 . The microalgae light culture unit 210 is installed on the window of the building 200 so that sunlight reacts with the microalgae of the light culture unit 210 to perform photosynthesis. The exhaust gas supplied from the exhaust gas supply unit 100 consumes carbon dioxide and produces oxygen through photosynthesis with sunlight (6CO ₂ +6H ₂ O->C ₆ H ₁₂ O ₆ +6O ₂ ).

In general, microalgae culture methods can be largely divided into open ponds, raceway ponds, and photobioreactors. The open pond culture system is the most widely used method due to its low initial investment and operating costs. For efficient light transmission, the reactor depth is about 0.3 m and is made of materials such as concrete and plastic, to prevent sedimentation of However, since it is exposed to the outside, pollution, temperature control, low productivity, etc. become problems, and most of the supplied carbon dioxide is lost to the atmosphere. The photobioreactor is a closed type reactor and has high microalgal biomass productivity and stable management, but has the disadvantage of high initial investment and operating cost compared to the open pond system.

In the present invention, the microalgae light culture unit 210 is installed on the window of the building 200 having a double-glazed structure to solve the problems of external pollution, temperature control, and loss of supplied carbon dioxide, which are disadvantages of an open pond, and disadvantages of the photobioreactor This cost problem can be reduced.

In one embodiment, the microalgae light culture unit 210 may be installed in the window of the building 200 in the form of a rectangular column, and the space may be reduced by 1/10 or more compared to the case of using a conventional glass greenhouse light incubator, and cultured Compared to the scale, the production cost of the reactor can be reduced to about 1/5.

The smart farm 240 is installed on the roof of the building 200 , and plants such as vegetables can be hydroponically grown, and exhaust gas can be fertilized from the exhaust gas supply unit 100 . The smart farm 240 is a collective term for an intelligent agricultural system by grafting information and communication technology (ICT) in the production stage of agriculture and forestry or livestock and fishery products, and a space such as the roof of the building 200 is used. Carbon dioxide contained in the exhaust gas supplied to the smart farm 240, which is hydroponically cultivated, can increase the growth rate of crops of the smart farm 240 by three times or more.

The aqua farm 220 may be installed in the window of the building 200 to culture fish. In one embodiment, the aqua farm 220 may be installed in the window of the building 200 having a double-glazed structure. There is no limitation on the type of fish cultured in the aqua farm 220 .

Oxygen generated in the microalgae light culture unit 210 may be supplied to the aqua farm 220 and used as oxygen required for fish culture. In addition, the oxygen generated in the microalgae light culture unit 210 may be stored in the oxygen storage unit 230 . Oxygen stored in the oxygen storage unit 230 may be set to be supplied in a certain amount to the aqua farm 220 as needed.

The light transmittance of the light culture unit 210 and the aqua farm 220 installed in a double-glazed structure of the building 200 may be adjusted. As the technology for controlling the transmittance of the window of the building 200, various well-known technologies may be used, but preferably, it may be manufactured in a form using a polymer disperse liquid crystal (PLCD) whose light transmittance changes according to the application of driving power. .

The light transmittance in the microalgae light culture unit 210 may be adjusted by distinguishing between the proliferation stage and the induction stage of the microalgae. In one embodiment, when the light transmittance is adjusted to 10 to 100%, the growth rate of microalgae is increased by controlling the light transmittance to about 10 to 50% in the microalgae propagation step, and then in the induction step, the amount of light up to 50 to 100% It is possible to maximize the accumulation of antioxidants by maximizing the

In addition, in the aqua farm 220, the light transmittance is adjusted to adjust the amount of light according to the cultured fish species, thereby minimizing the stress of the fish.

The biomass extraction unit 250 may extract biomass by using the material generated in the light culture unit 210 . The biomass extractor 250 may harvest the microalgal biomass generated through the light culture of the microalgae and dry it.

The extracted biomass can be divided into water-soluble and fat-soluble, and expensive substances such as health food and cosmetics can be produced by using the extracted substances such as omega 3 or astaxantin.

The residue remaining after extracting the biomass in the biomass extraction unit 250 may be manufactured into pellets and supplied to the aqua farm 220 . Pellets produced from biomass waste can further promote fish growth.

The waste tank 300 may store fish wastewater generated in the aqua farm 220 . In the waste tank 300 , wastewater and feces may be separated according to density.

The wastewater separated from the waste tank 300 moves to the filtration and sterilization unit 400 .

The filter sterilization unit 400 filters out fecal residues and foreign substances contained in the fish wastewater and sterilizes them. In one embodiment, the filter sterilization unit 400 may use UV for sterilization, and various devices for sterilization may be used.

The fish wastewater sterilized by the filtration and sterilization unit 400 contains essential nutrients of carbon (C), nitrogen (N), and phosphorus (P) that are helpful for the growth of microalgae. Therefore, the fish wastewater sterilized by the filter sterilization unit 400 may be injected into the light culture unit 210 to help the growth of microalgae.

In addition, the feces collected from the waste tank 300 may move to the anaerobic digester 500 . The anaerobic digestion process using the anaerobic digester 500 decomposes high-concentration organic solids such as food waste desorbed liquid, livestock manure, and organic sludge by anaerobic microorganisms. It is a process that simultaneously produces biogas such as methane. The anaerobic digestion process, which decomposes high-concentration organic solids, improves the efficiency, so that biogas containing methane as the main component can be produced only through hydrolysis, acid production, and methane fermentation.

The methane (CH ₄ ) generated in the anaerobic digester 500 may be supplied to the cogeneration unit 600 (CHP) through a purification process.

The cogeneration unit 600 produces electricity using methane that has undergone a refining process. In one embodiment, the cogeneration unit 600 may generate power using a fuel cell.

The power produced by the cogeneration unit 600 is supplied to the building 200 or the light culture unit 210 and can be utilized to operate the power of the building 200 or the light culture unit 210 or the aqua farm 220. . In one embodiment, the generated power may be used to adjust the light transmittance of the light culture unit.

The target of the power supply is not limited, and it is possible to supply various components used in the hybrid process system of the present invention.

According to an embodiment of the present invention, there is an effect of increasing space utilization and reducing installation costs by using the double-glazed microalgae photoculture and aqua farm 220 reactor in the downtown building 200 window. In addition, there are technical features of reducing the amount of carbon dioxide emitted as exhaust gas and maximizing energy utilization efficiency by recycling materials generated in the system as resources.

As described above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications, changes and substitutions within the scope without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: exhaust gas supply unit
200 : building
210: microalgae light culture unit
220: Aqua Farm
230: oxygen storage unit
240: smart farm
250: biomass extraction unit
300: waste tank
400: filter sterilization unit
500: anaerobic digester
600: cogeneration unit

Claims (11)

A microalgae light culture unit that receives exhaust gas produced from an urban power plant and light-cultures microalgae, and is installed in a building window;
Aqua farm installed in a building window to cultivate fish;
A smart farm that is hydroponically cultivated on the roof of the building;
a biomass extraction unit for extracting biomass by using the material generated in the light culture unit;
a waste tank for storing fish wastewater and feces generated in the aqua farm; and
A filter sterilization unit for filtering and sterilizing the wastewater stored in the waste tank
includes,
The exhaust gas is supplied to the smart farm,
The extraction residue extracted from the biomass extraction unit is made into pellets and supplied as feed for Aqua Farm,
Wastewater sterilized in the filter and sterilization unit is injected into the light culture unit,
Oxygen produced in the microalgal light culture unit is supplied to the aqua farm,
The light culture unit is installed on a double window of the building, and the light transmittance of the outer wall window of the building where the light culture unit is installed is adjusted according to the state of the microalgae, and the light transmittance of the light culture unit is the growth step and induction step of the microalgae is controlled separately, the microalgae propagation step is set in the light transmittance range of 10 to 50%, the induction step is set in the range of 50 to 100%,
The aqua farm is installed on the double-glazed window of the building, and the light transmittance of the outer wall window of the building where the aqua farm is installed is adjusted according to the type of fish,
The biomass extracted from the biomass extraction unit is an urban building-type microalgae light culture and aqua farm hybrid system, characterized in that it is processed into a product. delete delete delete delete delete According to claim 1,
anaerobic digestion tank for digesting feces of fish extracted from the waste tank;
a combined heat and power generation unit for generating power using the methane generated in the anaerobic digestion tank;
Urban building-type microalgae light culture and aqua farm hybrid system further comprising a. According to claim 1,
An oxygen tank for storing oxygen produced by the biomass extraction unit; wherein the oxygen stored in the oxygen tank is supplied to the aqua farm by adjusting the injection amount hybrid system. delete delete 8. The method of claim 7,
The power generated by the cogeneration unit is a city building-type microalgae light culture and aqua farm hybrid system, characterized in that it is supplied to the building or the light culture unit.

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