WO2023167354A1

WO2023167354A1 - Plasma sterilization and circulation type nutrient solution supply system

Info

Publication number: WO2023167354A1
Application number: PCT/KR2022/003142
Authority: WO
Inventors: 홍의기; 김종수
Original assignee: (주)디케이에코팜
Priority date: 2022-03-02
Filing date: 2022-03-07
Publication date: 2023-09-07
Also published as: KR20230130190A

Abstract

The present invention relates to a plasma sterilization and circulation type nutrient solution supply system. The present invention proposes a plasma sterilization and circulation type nutrient solution supply system comprising: a cultivation room (100) for growing plants; a nutrient solution supplier (200) for supplying nutrient solution to the cultivation room (100); a drainage recovery tank (300) which recovers and stores drainage discharged from the cultivation chamber (100); a sterilization treatment tank (600) which sterilizes the drainage recovered by the drainage recovery tank (300); and a controller (700) which causes the plasma-sterilized drainage from the sterilization treatment tank (600) to be supplied to the cultivation room (100). The present invention enables drainage discharged after supplying the nutrient solution to the cultivation room in facility cultivation to be supplied to the cultivation room in an appropriate nutrient solution state through a purification process of filtration through plasma sterilization, and thus has the advantage of enabling the minimization of waste nutrient solution.

Description

Plasma sterilization circulation nutrient solution supply system

The present invention relates to a nutrient solution supply system for supplying a nutrient solution to cultivation in a facility, and more particularly, to a wastewater discharged after supplying a nutrient solution to cultivation in a facility, purified through plasma sterilization and then re-supplied as a nutrient solution through a circulation process, thereby reducing waste It relates to a plasma sterilization circulation type nutrient solution supply system that enables minimization of nutrient solution.

A technology for cultivating plants by providing an optimal cultivation environment based on the optimal cultivation conditions necessary for growth of generally cultivated plants may be referred to as facility cultivation.

In other words, facility cultivation is a technology that allows plants to be grown by creating a cultivation environment with optimal conditions for plant growth. It is a technique to cultivate

Cultivation of these facilities is recently being cultivated in smart farm facilities equipped with automation equipment. As it is an agricultural method, it is attracting great attention as a solution to rural problems facing sustainability crisis, such as the aging of the agricultural and livestock farming population, the shortage of young people who succeed in farming, the decrease in production area, and the stagnant growth rate of income, exports, and investment.

In addition, in the supply of smart farms, nutrient solution cultivation is a scientific farming technology to grow various crops by supplying a culture solution containing all the nutrients necessary for plant growth, and is for growing plants regardless of soil, and is distinguished according to the medium. It is becoming.

Such nutrient solution cultivation makes it possible to prevent diseases and pests of various crops, and it is possible to grow pollution-free plants through cultivation that does not require pesticides. Phosphorus-enriched nutrient solution is mixed with water and supplied after being adjusted according to the set nutrient solution concentration.

However, the nutrient solution supply system described above automatically supplies the nutrient solution as much as the set value, but in consideration of various variables in the supply process, most of the nutrient solution supplies more than the appropriate amount when supplying the nutrient solution, so excessive drainage occurs and facilities for processing the drainage solution generated in this way There has been a problem with this addition being installed.

The background art or prior art described above herein is information possessed by the present inventor or acquired in the process of deriving the present invention, and is only intended to help understand the technical significance of the present invention, prior to the filing of the present invention, the technology to which this invention belongs It should be noted that it does not mean widely known technologies in the field.

Accordingly, the present inventor comprehensively considers the problem of discharged without separately storing and processing the drainage solution generated by the nutrient solution supplied during cultivation of the facility, which is the above-mentioned general matter, and at the same time, in the idea of solving the technical limitations and problems of the existing technology, In order to develop a nutrient solution supply system that allows reuse of the drainage discharged in the cultivation process of the facility and then circulates and supplies it, the present invention was created as a result of continuous research with painstaking efforts.

Therefore, the technical problem and object to be solved by the present invention is to re-supply the waste nutrient solution to the cultivation room in a nutrient solution state through a purification process through plasma sterilization after supplying the nutrient solution to the cultivation room in facility cultivation, thereby reducing waste nutrient solution. It is to provide a plasma sterilization circulation type nutrient solution supply system that enables minimization.

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

Specific means according to the practice of the present invention for effectively achieving a specific technical object while embodying a new idea for solving the technical problem of the present invention as described above is a raw water tank, a plurality of liquid fertilizer tanks, supply from the raw water tank A nutrient solution supplier consisting of a nutrient solution production tank for producing nutrient solution by mixing raw water and the material of the liquefied manure tank; A drainage recovery tank having a circulation pipe connected to the nutrient solution production tank at one side to collect drainage discharged from the plant growing room and store it through a storage or recovery pipe; a sterilization treatment tank installed in the circulating pipe to store the drainage solution and supply the drainage solution to the nutrient solution production tank by performing plasma sterilization through a plasma reactor; a bubble generator for supplying air to the discharged liquid stored in the sterilization treatment tank so that the plasma of the plasma reactor can be evenly supplied; A plasma sterilization circulation type nutrient solution supply system including a control unit controlling the nutrient solution supply amount by controlling the bubble generator, the plasma reactor, and the drainage recovery tank in response to the nutrient solution supply amount information according to the type of plant in the cultivation room is proposed.

The plasma reactor forms a circular sterilization pipe passage that penetrates vertically along the axial direction, and the upper and lower ends of the sterilization pipe passage are connected to a body and a power source connected to the sterilization treatment tank through a circulation pipe, respectively, and are connected to the sterilization pipe passage in the axial direction. Electrode rods installed along the body, a plurality of electrodes coupled along the circumference on the outside of the body and installed to form a discharge section in the sterilization tube can be applied.

A vaporization injector may be further provided to vaporize the discharged liquid in the form of liquid droplets and supply the plasma reactor to the plasma reactor.

The vaporization injector includes a body having an inner space, a nozzle coupled to one side of the body to supply drainage fluid, and a protruding first diffusion hole for dispersing and atomizing the drainage fluid supplied through the nozzle to the outside through collision. A perforated network body for supplying the drainage liquid diffused and injected through the first diffusion hole while passing through the perforated hole and being atomized by being collided with it; It can be applied that consists of a second diffusion port that diffuses and discharges the discharged liquid induced through the acceleration induction tool through collision while atomizing it, and a droplet supply chamber that guides the discharged liquid in the form of droplets through the second diffusion port.

The bubble generator may be composed of a pump for supplying air and a plurality of nozzles for supplying the air supplied from the pump into the sterilization treatment tank.

In the cultivation room, a temperature sensor for sensing the temperature inside the greenhouse, a carbon dioxide sensor, a humidity sensor for measuring humidity, a light intensity sensor for measuring light intensity according to solar radiation, inflow and outflow, and sensing information of the introduced nutrient solution A nutrient solution sensor, a soil information sensor that senses soil information, and a display capable of monitoring the cultivation room can be installed.

According to the technology of the present invention, which is based on a unique solution to solve the above technical problems, in facility cultivation, the drainage discharged after supplying the nutrient solution to the cultivation room is cultivated in a nutrient solution state through a circulation process of filtration through plasma sterilization. It has the advantage of minimizing drainage by allowing it to be supplied to the seal.

In addition, in the plasma sterilization process, there is an advantage in that an optimal sterilization effect can be obtained by first bubbling the drainage solution and then sequentially forming droplets and then plasma sterilization.

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a block diagram of a plasma sterilization circulation type nutrient solution supply system according to an embodiment of the present invention.

2 is a perspective view of the plasma reactor in FIG. 1;

3 is a cross-sectional schematic view of FIG. 2 .

4 is a schematic cross-sectional view showing a vaporization injector as another example according to the present invention.

5 is another example of FIG. 4 .

Hereinafter, embodiments according to the present invention will be described in more detail with reference to the accompanying drawings, and prior to describing the present invention, the terms to be described later are defined in consideration of functions in the present invention, which are technical aspects of the present invention. It is specified that it should be interpreted as a concept that corresponds to the idea and a meaning that is commonly or commonly recognized in the art. In addition, if it is determined that a detailed description of a known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description will be omitted.

The accompanying drawings are partially exaggerated or simplified for explanation of the configuration and operation of the technology and convenience and clarity of understanding, and it is revealed that each component does not exactly match the actual size and shape.

In addition, in this specification, the term and / or is meant to include a combination of a plurality of related items described or any item among a plurality of related items described, and when a part includes a certain component, this is particularly the opposite description. As long as there is no , it means that other components can be included more than not excluding other components.

That is, terms such as 'include', 'include', or 'have' mean that there is a feature, number, step, operation, component, part, or combination thereof described in this specification, but one or It should be understood that this does not preclude the possibility of the presence or addition of more other features or numbers, step-action components, parts, or combinations thereof.

In addition, terms such as top, bottom, top, bottom, or top, bottom, top, bottom, front and rear, left and right are used for convenience to distinguish the relative positions of each component. For example, an upper part in the drawing may be named or referred to as an upper part, a lower part may be named or referred to as a lower part, a longitudinal direction may be named or referred to as a front-back direction, and a width direction may be named or referred to as a left-right direction.

Also, terms such as first and second may be used to describe various components. That is, terms such as first and second may be used for the purpose of distinguishing only one element from another element. For example, a first component may be referred to as a second component without departing from the scope of the present invention, and the second component may also be referred to as a first component.

The present invention relates to a plasma sterilized circulating nutrient solution supply system that sterilizes drainage discharged from the cultivation bed after being supplied to the cultivation bed of a facility cultivation and reuses it.

The present invention relates to a cultivation room (100) for growing plants, a nutrient solution supplier (200) for supplying nutrient solution to the cultivation room (100), and a drainage recovery tank for recovering and storing drainage fluid discharged from the cultivation room (100). (300), a sterilization treatment tank (600) for sterilizing the drainage fluid recovered by the drainage recovery tank (300), and supplying the plasma sterilized drainage fluid from the sterilization treatment tank (600) to the cultivation chamber (100). It is composed of a control unit 700 that controls.

The cultivation chamber 100 consists of a cultivation bed having a space therein, and is capable of cultivating various types of plants in the space. The cultivation bed has an upwardly open cultivation groove for plant cultivation formed on the upper surface and various sensors are installed.

The sensors include a temperature sensor for sensing the temperature inside the greenhouse, a carbon dioxide sensor, a humidity sensor for measuring humidity, a light intensity sensor for measuring light intensity according to solar radiation, and sensing information of inflow and outflow and input nutrient solution. A display unit is installed to enable real-time monitoring through a plurality of cameras as well as a nutrient solution detection sensor and a soil information detection sensor for sensing soil information.

Accordingly, various signal values measured by the sensor are output to the control unit 700 and compared with memorized or pre-memorized stored values so that each corresponding component equipment can be controlled under appropriate conditions.

The nutrient solution supplier 200 includes a raw water tank 220 for storing raw water dissolved through the oxygen dissolver 221, a liquid fertilizer tank 240 for storing various types of nutrient solutions, respectively, and the raw water tank 220. It is composed of a nutrient solution production tank 260 that produces a nutrient solution by mixing the supplied raw water and the corresponding nutrient solution.

The raw water tank 220 is for storing raw water, and an oxygen dissolver 221 is installed on one side to store dissolved oxygen under appropriate conditions.

The liquid fertilizer tank 240 stores nutrient solution, and various types of nutrient solution are stored therein, respectively.

The nutrient solution production tank 260 includes the raw water of the raw water tank 220 automatically supplied according to the signal value of the control unit 700, the nutrient solution of the liquid fertilizer tank 240 selected from among the liquid fertilizer tank 240, and the sterilization treatment tank 600. ) is mixed with the sterilized wastewater in an appropriate ratio and supplied to the cultivation chamber 100 through the storage and supply pipe 202.

In the nutrient solution production tank 260, an ion detection sensor, a pH detection sensor, an EC detection sensor, etc. may be installed to sense the state of the nutrient solution so as to supply an appropriate nutrient solution.

The drainage recovery tank 300 recovers the drainage from the cultivation chamber 100 and stores the drainage discharged through the storage or recovery pipe 101 and has a circulation pipe 102 connected to the nutrient solution production tank 260 on one side. ) 103 is provided.

The circulation pipe 102 connects the drainage recovery tank 300 and the sterilization treatment tank 600 to each other, and the circulation pipe 103 connects the sterilization treatment tank 600 and the nutrient solution production tank 260, there is.

Filters

110 and 400 are respectively installed in the recovery pipe 101 and the circulation pipe 102 to filter foreign substances from the drainage, and the

filters

110 and 400 are installed to be replaceable and foreign substances from the drainage. After filtering, the drained liquid can be supplied to the sterilization treatment tank 600.

The

filter

110 or 400 may be made of a mesh body having a plurality of gaps in which metal or fiber yarns are woven to filter out foreign substances.

Here, the mesh body constituting the filter 110 (400) forms a collection space to store foreign substances therein, and an inlet for drainage is formed on the surface, and the inlet is at the inlet for quick inflow. It is made in a form in which the inner diameter is gradually reduced in the direction of the outlet side, and the inlet side edge end is fixed to the surface of the mesh body and the outlet end is located in the middle of the collecting space.

Accordingly, when the drainage is introduced into the inlet, the foreign matter stays in the collecting space, and since the outlet of the inlet is formed narrowly, the foreign matter accumulated in the collecting space can remain in the collecting space without escaping.

The sterilization treatment tank 600 is configured to sterilize the wastewater introduced through the circulation pipe 102 and supply the sterilized wastewater to the nutrient solution production tank 260 through the circulation pipe 103.

A bubble generator 800 and a plasma reactor 900 are installed in the sterilization treatment tank 600 .

The bubble generator 800 introduces the drainage liquid stored in the sterilization treatment tank 600 through the inlet pipe, filters it, forms air bubbles in the filtered drainage liquid, and then supplies the filtered drainage liquid into the sterilization treatment tank 600. has been

The above-described bubble generator 800 is installed in the circulation pipe 601 and is designed to bubble the discharged liquid from the sterilization treatment tank 600 and supply it to the sterilization treatment tank 600 again.

This may be applied by a pump supplying air to the inflowing drainage liquid and a plurality of nozzles supplying the air supplied from the pump into the sterilization treatment tank 600.

In addition, the circulation pipe 601 through which the drainage flows into the bubble generator 800 includes a filter 500 for filtering foreign substances, a pump P for inflow of drainage through a pumping operation, and a valve for selectively blocking the inflow of drainage. (V) is installed.

The filter 500 is for filtering foreign matter from the drainage, and the same filter 110 and the filter 400 are applied.

The plasma reactor 900 induces the drainage in a bubbled and stored state from the bubble generator 800 through the circulation pipe 602 to supply plasma to the drainage through discharge to continuously sterilize the drainage while continuously sterilizing the sterilization treatment tank ( 600) to be cycled.

The above-described plasma reactor 900 forms a circular sterilization pipe passage 910 vertically penetrating along the axial direction, and the upper and lower ends of the sterilization pipe passage 910 connect the sterilization treatment tank 600 and the circulation pipe 602, respectively. A body 920 connected through, a plurality of electrodes 930 connected to the power source and installed along the axial direction of the sterilization tube 910, and a plurality of electrodes 930 coupled along the circumference outside the body 920 to the sterilization tube ( 910) can be applied to be made of an electrode unit 940 installed to form a discharge section.

Accordingly, when power is supplied to the electrode rod 930 and the electrode unit 940 through power application, a discharge section is formed in the sterilization pipe 910, and at this time, the drainage flowing through the sterilization pipe 910 passes through the discharge section. It is plasma sterilized and discharged.

In the drawing, 901 is a high voltage generator for supplying power to the

plasma reactor

900, and 902 is a down transformer for conversion.

In addition, a vaporization injector 680 may be installed in the plasma reactor 900 to vaporize and supply the waste liquid in the form of droplets.

The vaporization injector 680 includes a body 681 having an inner space, a nozzle 682 coupled to one side of the body 681 to supply drainage liquid, and a nozzle 682 positioned to correspond to the nozzle 682. A protrusion-shaped first diffusion hole 683 that diffuses the drainage supplied through 682 to the outside and atomizes it, and the drainage diffused and sprayed through the first diffusion hole 683 passes through the perforation and bumps A perforated network member 685 to be supplied while being dispersed, an acceleration induction tool 686 to induce acceleration by inducing the drainage liquid passing through the perforation network body 685 toward the center through an inclination angle, and the acceleration induction tool 686 The second diffusion hole 687 diffuses and discharges the drainage fluid guided and discharged through bumping, and the droplet supply chamber 688 guides the drainage fluid moving through the second diffusion hole 687 to be discharged in the form of droplets. consist of.

Accordingly, when the drainage is supplied through the nozzle 682, it is diffused and sprayed through the first diffusion hole 683, then moved into the perforated net 685, continuously filtered through the perforated net 685, and then accelerated by the induction tool 686. After being accelerated while passing through the second diffusion hole 687, it is diffused and sprayed again through the liquid crystal supply chamber 688 and moved to the sterilization tube 910 of the plasma reactor 900 in a droplet state while passing through the liquid crystal supply chamber 688 to be discharged It reacts with plasma in an optimal state.

The control unit 700 is configured to supply an appropriate amount of the nutrient solution manufactured from the nutrient solution production tank 260 to the plant growing room 100 through a supply pipe, based on the nutrient solution supply amount information according to the type of plant.

The control unit 700 includes a known artificial neural network technology, and cultivates by applying artificial intelligence, machine learning, and deep learning-based technology. The amount of nutrient solution supplied to the seal 100 can be adjusted.

In the drawing, V is a valve, and the valve (V) is configured to supply and block the drainage fluid transferred through the operation of the pump (P).

In the drawing, P is a pump, and the pump P is configured to circulate the drainage liquid through a pumping operation.

On the other hand, the present invention is not limited by the above-described embodiments (embodiment) and the accompanying drawings, and can be variously modified and applied in various ways not illustrated within the scope without departing from the technical spirit of the present invention, as well as each It is clear to those of ordinary skill in the art that the components can be widely applied by substitution of components and changes to other equivalent embodiments. Therefore, contents related to the modification and application of the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

Claims

A nutrient solution supplier consisting of a raw water tank, a plurality of liquid fertilizer tanks, and a nutrient solution production tank for producing nutrient solution by mixing the raw water supplied from the raw water tank and the material of the liquid fertilizer tank;

A drainage recovery tank having a circulation pipe connected to the nutrient solution production tank at one side to collect drainage discharged from the plant growing room and store it through a storage or recovery pipe;

a sterilization treatment tank installed in the circulating pipe to store the drainage solution and supply the drainage solution to the nutrient solution production tank by performing plasma sterilization through a plasma reactor;

a bubble generator for supplying air to the discharged liquid stored in the sterilization treatment tank so that the plasma of the plasma reactor can be evenly supplied;

a control unit that controls the nutrient solution supply amount by controlling the bubble generator, the plasma reactor, and the drainage recovery tank in response to the nutrient solution supply amount information according to the type of plant in the cultivation chamber;

Plasma sterilization circulating nutrient solution supply system comprising a.
According to claim 1,

The plasma reactor,

A body in which a sterilization pipe passage is formed to penetrate vertically along the axial direction in a circular shape, and the upper and lower ends of the sterilization pipe passage are connected to the sterilization treatment tank through a circulation pipe, respectively;

An electrode connected to a power source and installed along the axial direction in the sterilization pipe;

Plasma sterilization circulating nutrient solution supply system, characterized in that consisting of a plurality of electrodes coupled along the circumference of the body and installed to form a discharge section in the sterilization pipe passage.
According to claim 1,

further providing a vaporization injector to vaporize and supply the discharged liquid in the form of liquid droplets to the plasma reactor;

The vaporization injector,

A body with an inner space

A nozzle coupled to one side of the body to supply drainage;

A protrusion-shaped first diffusion hole that is positioned to correspond to the nozzle and diffuses the drainage liquid supplied through the nozzle outward to atomize it;

A perforated network body for distributing and supplying the drainage liquid diffused and sprayed through the first diffusion hole through perforation while passing through the perforated hole;

An acceleration induction tool for inducing and accelerating the drainage passing through the perforated mesh toward the center through an inclination angle;

A second diffusion hole that diffuses and discharges the drainage liquid induced and discharged through the acceleration guide tool through bumping;

Plasma sterilization circulation type nutrient solution supply system, characterized in that consisting of a droplet supply chamber for guiding the discharged liquid moving through the second diffusion hole to be discharged in the form of droplets.
According to claim 1,

The bubble generator,

A pump for supplying air;

Plasma sterilization circulation type nutrient solution supply system, characterized in that consisting of a plurality of nozzles for supplying the air supplied from the pump into the sterilization treatment tank.
According to claim 1,

In the recovery pipe and the circulation pipe,

Filters for filtering foreign substances from the inflowing drainage are installed, respectively.

The filter,

It is made of a mesh body having a plurality of gaps in which metal or fiber yarns are woven to filter out foreign substances;

The mesh body forms a collection space for storing foreign substances therein, and a plurality of inlets for inflow of drainage are coupled to the surface, and the inlet is made in a form in which the inner diameter gradually decreases from the inlet to the outlet , Plasma sterilization circulation type nutrient solution supply system, characterized in that the inlet side edge is fixed to the surface of the mesh body and the outlet end is located in the middle of the collection space.