KR101375709B1 - Nutrient Solution Circular Supply System - Google Patents

Abstract

The present invention relates to a nutrient solution circulation supply system configured to supply a nutrient solution required for a nutrient solution bed used for cultivation of a plant and to recover and reuse the nutrient solution discharged from the nutrient solution bed, and then supply the nutrient solution to the nutrient solution bed again. A nutrient solution tank communicating with the nutrient solution bed for recovering and storing the nutrient solution discharged from the nutrient solution bed; A recovery nutrient processing unit communicating with the recovery nutrient tank and receiving nutrient solution from the recovery nutrient tank for sterilization and purification; A clarification nutrient tank communicating with the nutrient nutrient processing unit and receiving and storing the sterile-purified nutrient solution in the recovery nutrient processing unit; A multi-way valve formed on a conduit for supplying nutrient solution from the clarification nutrient solution tank to the nutrient solution bed; A raw water tank communicating with the multi-way valve, the raw water tank storing raw water supplied to a duct supplying the nutrient solution from the clarifying nutrient solution tank to the nutrient solution bed; A liquid ratio supply unit communicating with the multi-way valve and supplying a liquid ratio supplied from the purification nutrient tank to the nutrient solution bed to supply the nutrient solution to the duct; A first sensor unit for measuring the electrical conductivity of the nutrient solution disinfected by the sterilization and purification process in the recovered nutrient solution processing unit; And an EC control unit controlling the multi-way valve based on the electrical conductivity measured by the first sensor to adjust the amount of raw water supplied from the raw water tank and the liquid ratio supplied from the liquid supplying unit. It is done.

Description

Nutrient Solution Circular Supply System

The present invention relates to a nutrient solution circulation supply system, and in particular, to supply the nutrient solution required for the nutrient solution bed used for cultivation of nutrient solution, and to recover and reuse the nutrient solution discharged from the nutrient solution bed to supply the nutrient solution bed again. It relates to a configured nutrient circulating supply system.

Nutrient cultivation is also commonly referred to as solution culture, and is made of peat moss, pearlite, vermiculite, rock wool, pumice, hultan, sawdust, gravel, sand, etc. It refers to a cultivation method in which crops are grown by artificially creating an environment in which crops are grown using a solid medium. This is based on soil-free cultivation, and includes hydroponic cultivation such as nutrient film technique (NFT), distilled hydroponic tube, spray mirror, and capillary hydroponic tube. It is also called tank farming or bed farming.

Nutrient cultivation can harvest large quantities of crops in a short period of time and can be cultivated even where it is impossible to farm because it is much less controlled by the natural environment than soil cultivation. However, it requires a lot of capital, and once the pathogens invade, it spreads in a short time and requires careful nutritional control of the crop. In Korea, cultivation of nutrients began around 1980, and the cultivation area reached 4 ha in 1985 and reached 59.5 ha in 1994. About 70% of them use solid media, and about 30% are cultivated by fresh hydroponic culture. The crops are fruit vegetables such as cucumbers, tomatoes, cherry tomatoes, peppers, leafy vegetables such as lettuce, parsley, and dive, green onions and perilla, and flowers such as roses, gerberas, chrysanthemums, and carnations. Before and after 1990, the cultivation method was the mainstream of NFT, adversity cultivation and cultivation of cultivation, but since then, except for NFT, it has been changed to rock wool cultivation and perlite cultivation.

In this nutrient cultivation, the nutrient solution is divided into two types. Firstly, the nutrient solution containing the nutrients necessary for the growth of crops is supplied to the nutrient solution bed, and then the non-cyclic supply method in which the excess nutrient solution discharged from the nutrient solution bed is discarded. The second is a circulating feeding method in which the nutrient solution is supplied to the nutrient solution bed and then the excess nutrient solution discharged from the nutrient solution bed is supplied to the nutrient solution bed and reused.

Conventionally, the non-cyclic feeding method has been mainly used, but in recent years, the nutrient solution discharged from the nutrient solution bed has a high risk of contaminating soil or water resources. Therefore, the regulation on disposal of the nutrient solution is very difficult, and it is used and discharged from the nutrient solution bed. In the nutrient solution, the necessary nutrients are not consumed and remain, and even if this is used, the quality of the crops grown is not so bad that the circular feeding method is getting into the spotlight.

In such a circulating feeding method, it is important not only to maintain the composition of nutrient components effective for the growth of various crops so as to facilitate the supply of nutrients and the growth of crops, but also to prevent the nutrients from being contaminated and infecting crops with pathogens. It is important to give.

In the conventional circulating feeding method, since the nutrient solution discharged from the nutrient solution bed is simply re-supplied to the nutrient solution bed by using a pump or the like, the nutrient solution needs to be periodically replaced to maintain the active ingredient contained in the nutrient solution. In addition to the remedy, there was a problem that the foreign bodies were generated in the nutrient solution due to repetitive circulation or the pathogenic bacteria were very likely to propagate.

In addition, a circulating feeding method has been proposed to prevent the growth of pathogens by adding a sterilizer in the middle of circulating the nutrient solution. Manganese or iron ions contained in the nutrient solution is oxidized to bring about a lack of nutrients, as well as to close the pipeline formed between the devices due to precipitation, or had a problem of disturbing the flow of the nutrient solution.

Korea Registered Patent No. 10-0285693 (registered on Jan. 05, 2001) Korea Registered Patent No. 10-0470453 (registered on Jan. 27, 2005)

Technical problem to be solved by the present invention, in the nutrient solution circulation supply system for recovering and supplying the nutrient solution supplied to the nutrient solution bed can not only suppress the generation of pathogens by sterilizing and purifying the recovered nutrient solution and various sensor devices and The purpose of the present invention is to provide a nutrient circulating supply system that can replenish insufficient ingredients or raw water actively using a control device to maintain nutrient solution optimized for crop growth.

In the nutrient solution circulation supply system for solving the above problems in the nutrient solution circulation supply system for recovering and supplying the nutrient solution supplied to the nutrient solution bed, the nutrient solution is communicated with the nutrient solution bed, to recover and store the nutrient solution discharged from the nutrient solution bed Recovery nutrient tank; A recovery nutrient processing unit communicating with the recovery nutrient tank and receiving nutrient solution from the recovery nutrient tank for sterilization and purification; A clarification nutrient tank communicating with the nutrient nutrient processing unit and receiving and storing the sterile-purified nutrient solution in the recovery nutrient processing unit; A multi-way valve formed on a conduit for supplying nutrient solution from the clarification nutrient solution tank to the nutrient solution bed; A raw water tank communicating with the multi-way valve, the raw water tank storing raw water supplied to a duct supplying the nutrient solution from the clarifying nutrient solution tank to the nutrient solution bed; A liquid ratio supply unit communicating with the multi-way valve and supplying a liquid ratio supplied from the purification nutrient tank to the nutrient solution bed to supply the nutrient solution to the duct; A first sensor unit for measuring the electrical conductivity of the nutrient solution disinfected by the sterilization and purification process in the recovered nutrient solution processing unit; And an EC control unit controlling the multi-way valve based on the electrical conductivity measured by the first sensor to adjust the amount of raw water supplied from the raw water tank and the liquid ratio supplied from the liquid supplying unit. It is done.

In this case, the liquid ratio supply unit includes two or more solution tanks each storing a solution of different components, and a liquid control unit for controlling the amount of the solution discharged from each of the two or more solution tanks.

In addition, the second nutrient solution for measuring the hydrogen ion concentration of the nutrient solution disinfected by the sterilization and purification process in the recovered nutrient solution processing unit, at least one of the two or more of the solution tank is an alkaline solution, the other acidic solution And storing the amount of alkaline solution and acidic solution discharged from the solution tank based on the hydrogen ion concentration measured by the second sensor unit in the liquid control unit to adjust the hydrogen ionization concentration of the nutrient solution.

On the other hand, it is provided with a third sensor for measuring the level of the nutrient solution stored in the clarification nutrient solution tank to observe whether the nutrient solution does not overflow.

In addition, a first filtration filter is installed on the pipeline communicating the recovery nutrient tank and the nutrient solution processing unit, and a second filtration filter is installed on the duct connecting the recovery nutrient processing unit and the purification nutrient tank. Good to do.

On the other hand, the recovered nutrient processing unit is a contact tank for storing the nutrient solution supplied from the recovered nutrient solution tank, and ozone treatment oil for generating ozone and containing it in the nutrient solution supplied from the contact tank and returning the nutrient solution to the contact tank In this case, it is also preferable to further include a UV treatment unit installed in the contact tank to sterilize the nutrient solution and to activate the ozone contained in the nutrient solution.

In addition, it is necessary to provide a fourth sensor unit for measuring the level of the nutrient solution stored in the contact tank, so that it is necessary to manage the nutrient solution not to overflow.

On the other hand, after passing through the multi-way valve at least one of the fifth sensor unit for measuring the electrical conductivity and hydrogen ion concentration of the nutrient solution supplied to the nutrient solution bed and the first to fifth sensor unit, respectively The system may further include a manager unit including a communication unit for transmitting a numerical value through a wired / wireless communication network and a display device for receiving the numerical value from the communication unit and displaying the numerical value.

In this case, the manager unit may include a manager control module for generating signals for controlling the EC control unit and the avi control unit by input of the manager, and a signal generated from the manager control module via the wired / wireless communication network. It is also preferable to include a communication module to transmit to the control unit so as to be able to control as well as observe the system from a remote location.

According to the present invention, the nutrient solution discharged from the nutrient solution bed is separately stored in a recovered nutrient solution tank, and the nutrient solution is supplied to the recovered nutrient solution from the recovered nutrient solution tank for sterilization and purification, and the nutrient solution exceeding the capacity of the recovered nutrient solution is supplied. There is an advantage that can be prevented from being properly disinfected.

In addition, the present invention by storing the sterilized clarified nutrient solution in the recovery nutrient solution in a separate clarification nutrient solution tank to be supplied back to the nutrient solution bed, the nutrient solution sterilized and treated nutrient solution discharged from the nutrient solution bed and In addition to preventing contamination by remixing, there is another advantage of resupplying a sufficient amount of sterile-purified nutrient solution to the clarification nutrient solution tank.

In addition, the present invention is to check the electrical conductivity and hydrogen ion concentration of the nutrient solution discharged from the recovered nutrient solution processing tank and the supply of nutrients or raw water lacked by various causes such as oxidation of iron or manganese ions By actively supplying using a multi-way valve, there is another advantage that can keep the nutrient solution re-supplied to the nutrient solution bed at all times optimized.

In addition, the present invention is not only able to remotely control the electrical conductivity of the nutrient solution, the hydrogen ion concentration, the composition ratio of the components constituting the nutrient solution, etc. using a wired or wireless communication network, it is another advantage that can check the state of the nutrient solution from time to time There is this.

1 is a block diagram of a nutrient solution circulation supply system according to an embodiment of the present invention.
2 is a block diagram of a recovered nutrient solution processing unit according to an embodiment of the present invention.
3 is a block diagram of a liquid rain supply unit according to an embodiment of the present invention.
4 is a block diagram of a communication unit and a manager unit according to an embodiment of the present invention.

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

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

Referring to Figure 1, the nutrient solution circulation supply system according to an embodiment of the present invention is a nutrient solution bed 100, a recovery nutrient solution tank for storing the nutrient solution discharged from the nutrient solution bed 100 and A recovery nutrient treatment unit 400 for sterilizing and purifying the nutrient solution discharged from the recovery nutrient solution tank 200, a purification nutrient solution tank 300 storing the nutrient solution discharged from the recovery nutrient solution processing unit 400, and the purification nutrient solution tank (300) and a multi-way valve (800) having an outlet as a communication channel communicating with the nutrient solution bed (100), and a raw water tank connected to the inlet side of the multi-way valve (800) for storing raw water ( 600, a first sensor connected to the other inlet side of the multi-way valve 800 for supplying the liquid ratio and the electrical conductivity of the nutrient solution stored in the clarification nutrient solution tank 300 The unit 710 and the numerical value measured by the first sensor unit 710. Including the EC control unit 700 for controlling the flow rate of the multi-way valve 800, although not shown in the drawings may be mounted to the various pumps and valves required parts.

At this time, the first filtration filter 210 is mounted on the pipe connecting the recovered nutrient solution tank 200 and the recovered nutrient solution processor 400 to remove the suspended matter or other impurities contained in the nutrient solution in advance. It is preferable to facilitate the sterilization and purification treatment, and the second filtration filter 310 is also mounted on the communication channel between the recovery nutrient processing unit 400 and the clarification nutrient solution tank 300 to prevent any suspended matter or other Once the impurities are removed once more and stored in the clarification nutrient solution tank 300 is good to manage so that the nutrient solution supplied to the nutrient solution bed 100 is not contaminated or infected.

On the other hand, the recovered nutrient solution processing unit 400 is a device that can sterilize and purify various pathogens that may be included in the nutrient solution, heat treatment sterilization apparatus, ultraviolet sterilization apparatus, ozone sterilization apparatus and the like can be used.

Figure 2 shows an embodiment of such a recovery nutrient processing unit 400.

2, the recovery nutrient processing unit 400 according to an embodiment of the present invention is a contact tank 410 for storing the nutrient solution supplied from the recovered nutrient solution tank 200, and an ozone treatment unit for generating ozone ( 420 and the ultraviolet treatment unit 430 installed in the contact tank 410.

The contact tank 410 is supplied with the nutrient solution discharged after being used in the nutrient solution bed 100, not directly supplied from the nutrient solution bed 100, but stored in the recovery nutrient tank 200 first and then recovered The tank 200 is supplied to the contact tank 410.

This is when the nutrient solution is directly discharged from the nutrient solution bed 100 to the contact tank 410, when the nutrient solution exceeds the processing capacity of the recovery nutrient processing unit 400 is not properly sterilized and purged nutrient solution discharged It is not possible to prevent the nutrients from being contaminated and adversely affect the growth of crops.

Therefore, in one embodiment of the present invention, the nutrient solution discharged from the nutrient solution bed 100 is first stored in the recovery nutrient solution tank 200, and then the recovery of the nutrient solution processing unit 400 in the recovery nutrient solution tank 200. By supplying only the amount corresponding to the capacity to the contact tank 410 is configured to reliably sterilization and nutrient solution.

In order not to exceed the processing capacity of the recovered nutrient solution processing unit 400 may be used a number of methods, a fourth sensor unit (not shown in Figure 2) for measuring the level of the nutrient solution introduced into the contact tank 410 If the level of nutrient solution supplied to the contact tank 410 reaches a predetermined value, the valve is controlled so that the nutrient solution is no longer supplied from the recovered nutrient solution tank 200 to the contact tank 410 or the pump It can be configured to stop operation.

In addition, when the water level of the contact tank 410 is measured using the fourth sensor, when only a small amount of nutrient solution is stored in the contact tank 410, the level of the water level is higher than a predetermined level without operating the recovery nutrient processing unit 400. Another advantage is that it only runs when it is in operation, allowing it to run efficiently without wasting energy.

On the other hand, the nutrient solution stored in the contact tank 410 is circulated repeatedly through the ozone treatment unit 420 is rich in ozone to be sterilized and purified, the dissolved ozone contained in the nutrient solution to the oxygen after a certain time Substituted to be present as dissolved oxygen.

At this time, when the nutrient solution is sterilized and purified only by ozone using the ozone treatment unit 420, ozone may be excessively added and the nutrient solution may be excessively oxidized.

Therefore, by providing an ultraviolet processing unit 430 for emitting ultraviolet rays having a sterilizing wavelength in the contact tank 410, sterilization and purification function with the ozone processing unit 420 by sterilizing bacteria or viruses contained in the nutrient solution. At the same time, it is desirable to further activate the ozone contained in the nutrient solution so that the nutrient solution can be sterilized and purified sufficiently even with a small amount of ozone.

Referring back to FIG. 1, the nutrient solution sterilized and purified by the ozone treatment unit 420 and the ultraviolet treatment unit 430 of the recovered nutrient processing unit 400 may pass through the second filtration filter 310. Suspended impurities that may be contained are filtered and supplied to the purification nutrient solution tank 300.

As such, the nutrient solution sterilized and purified by the recovered nutrient processing unit 400 is stored in the clarifying nutrient solution tank 300 without being directly supplied to the nutrient solution bed 100 again. Re-feeding to the nutrient solution bed 100 is because the recovered nutrient solution is used in the nutrient solution bed 100, there may be a loss of nutrients contained in the nutrient solution, and also sterilized and purified by ozone in the recovered nutrient solution processing unit 400 Iron and manganese, which are present in the form of ions in the nutrient solution, is oxidized and precipitated, resulting in a lack of specific nutrients and acidity such as acidity.

First, the electrical conductivity (EC) of the nutrient solution stored in the clarifying nutrient solution tank 300 is measured by using the first sensor unit 710 to determine the nutrient content contained in the nutrient solution. If the concentration is high and the electrical conductivity is low, the concentration is low due to lack of nutrients.

In general, suitable electrical conductivity varies depending on the type of crops grown, etc., and is usually controlled at a value of about 2 to 5 / (mΩ · ㎝).

On the other hand, the electrical conductivity is changed according to the measured temperature, usually 2% change as the 1 ℃ changes and to include a sensor for measuring the temperature in the first sensor unit 710 to reflect the effect of the temperature It is necessary to calibrate, and generally the conductivity value is calculated based on 25 ℃.

As described above, when the electrical conductivity of the nutrient solution in the clarification nutrient solution tank 300 is measured through the first sensor unit 710, the liquid ratio must be supplied to replenish nutrients in the nutrient solution, and the electrical conductivity. If is above the standard, raw water should be supplied to lower the concentration of nutrients.

In an embodiment of the present invention, the multi-way valve 800 is electrically controlled and the EC controller 700 electrically controlling the multi-way valve 800 is implemented.

First, the outlet side of the multi-way valve 800 is to be communicated on the conduit provided between the clarification nutrient solution tank 300 and the nutrient solution bed 100, one inlet side of the multi-way valve 800 Communicating with the raw water tank 600 for storing the raw water, the other inlet side is installed to communicate with the liquid rain supply unit 500 for supplying the liquid rain.

In addition, when the electrical conductivity of the nutrient solution in the purification nutrient solution tank 300 is measured by the first sensor unit 710 and the electrical conductivity is higher than a predetermined reference, the EC controller 700 may use the multi-way valve ( 800 to increase the supply of raw water, and when the electrical conductivity is low by increasing the supply of the liquid ratio by controlling the multi-way valve 800 in the EC control unit 700 is supplied to the nutrient solution bed 100 The electrical conductivity of the nutrient solution is kept constant.

Thus, in the present embodiment, the invention is implemented using a three-way valve having two inlets and one outlet, but may be implemented using a four-way valve having three inlets and one outlet.

That is, the inlet of the purifying nutrient solution tank 300, the raw water tank 600, the liquid fertilizer supply unit 500 and the multi-way valve 800 is in communication, and the nutrient solution bed 100 to the multi-way valve ( By allowing the outlet of 800 to communicate with each other, the amount of the nutrient solution discharged from the clarification nutrient solution tank 300 and the raw water discharged from the raw water tank 600 and the liquid ratio supplied from the liquid ratio supply unit 500 may be controlled. In this case, the third sensor unit 320 for measuring the level of the nutrient solution stored in the purification nutrient solution tank 300 is configured to adjust the amount of nutrient solution supplied to the nutrient solution bed 100 according to the level of the nutrient solution It may be.

In addition, the present invention may be implemented by using the multi-way valve 800 in various combinations and forms, and the necessary equipment including a third sensor unit 320 provided in the purification nutrient solution tank 300. You can also add more.

In addition, the first sensor unit 710 for measuring the electrical conductivity of the nutrient solution is also provided on the conduit between the recovery nutrient solution processing unit 400 and the clarification nutrient solution tank 300 without having to be provided in the purification nutrient solution tank 300. It may be formed, or may be formed in the outlet side of the clarification nutrient solution tank (300).

On the other hand, it is also important to keep the electrical conductivity of the nutrient solution supplied to the nutrient solution bed 100 is constant, but it is also very important for the growth of crops to maintain a constant hydrogen ion concentration (pH) of the nutrient solution.

In particular, the nutrient solution passed through the recovery nutrient processing unit 400 for sterilizing and purifying using ozone has a risk of lowering the hydrogen ionization concentration due to the oxidizing power of ozone. As a result, the balance of the nutrient components may be broken and the hydrogenation concentration may change.

Therefore, it is necessary to correct this by measuring the degree of hydrogen ionization of the nutrient solution in the clarification nutrient solution tank 300. FIG. 3 illustrates an embodiment of the liquid supply unit 500 for implementing the same.

Referring to FIG. 3, the purification nutrient solution tank 300 includes a second sensor unit 530 for measuring the hydrogen ionization concentration of the nutrient solution, and the liquid ratio supply unit 500 includes two or more solution tanks 510. ) And a liquid control unit 520 for controlling the amount of the solution discharged from the solution tank 510.

Each of the plurality of solution tanks 510 stores a liquid ratio including nutrients constituting the nutrient solution, one solution tank 510 may store a liquid ratio of a single component and to store a liquid ratio of a plurality of similar components Alternatively, two or more solution tanks 510 for storing liquid ratios of the same component may be provided.

At least one of the plurality of the solution tanks 510 such that the liquid ratio of the alkaline component is stored and the liquid ratio of the acidic component is stored in the other one or more tanks.

The second sensor unit 530 measures the hydrogen ion concentration of the nutrient solution in the clarification nutrient solution tank 300 and when the value is high, the liquid tank in which the liquid ratio of the acid component is stored in the liquid control unit 520 ( The amount of liquid ratio discharged from 510 is increased, and when the hydrogenation concentration is low, the amount of liquid ratio discharged from the solution tank 510 in which the liquid ratio of the alkaline component is stored in the liquid control unit 520 is increased.

The liquid ratio thus discharged is mixed with the nutrient solution discharged from the clarifying nutrient solution tank 300 through the multi-way valve 800 to maintain a constant hydrogen ion concentration of the nutrient solution supplied to the nutrient solution bed 100. will be.

In this case, the liquid control unit 520 may be implemented to individually control the valve installed in each of the solution tank 510, provided with a valve of the same type as the multi-way valve 800 and each inlet side It may be implemented to communicate with the solution tank 510 and to control the multi-way valve.

Meanwhile, in order to correct the hydrogen ionization concentration of the nutrient solution discharged from the clarification nutrient solution tank 300, the amount of the solution discharged from the solution tank 510 discharged to the liquid control unit 520 must be controlled. By controlling the multi-way valve 800, the amount of liquid ratio discharged from the liquid ratio supply unit 500 should also be controlled.

Therefore, the liquid control unit 520 and the EC control unit 700 are implemented in one control device using a microprocessor, and so on in the first sensor unit 710, the second sensor unit 530, and many other measuring devices. It is desirable to combine and analyze the measured values so as to integrally control various valves and pumps.

In addition, like the first sensor unit 710 described above, the recovered nutrient solution processing unit 400 does not need to be provided in the purification nutrient solution tank 300 to measure the hydrogen ionization concentration of the nutrient solution. And on the conduit between the clarification nutrient solution tank 300, or the outlet side of the clarification nutrient solution tank 300 may be formed.

Returning to Figure 1 again, let us briefly look at the operation of the nutrient solution circulation supply system according to an embodiment of the present invention.

First, the electrical conductivity and the hydrogenation concentration of the nutrient solution to be supplied are set according to the type of crop to be cultivated on the nutrient solution bed 100, and the supply amount or flow rate of the nutrient solution is also adjusted.

And first there is no nutrient solution recovered from the nutrient solution bed 100 is re-supplied, so the multi-way valve 800 to control the nutrient solution discharged from the clarification nutrient solution tank 300 and the liquid tank 600 and the liquid ratio Only raw water discharged from the supply unit 500 and the liquid ratio are mixed and supplied to the nutrient solution bed 100.

The nutrient solution supplied to the nutrient solution bed 100 flows for a predetermined time and then supplies nutrients to the crops grown on the nutrient solution bed 100 and is discharged and stored in the recovered nutrient solution tank 200.

The nutrient solution stored in the recovery nutrient tank 200 after being used in the nutrient solution bed 100 is stored in the recovery nutrient processing unit 400 to be sterilized and purified, in consideration of the processing capacity of the recovery nutrient processing unit 400. The water level is measured and controlled by the fourth sensor unit 411 so that the supply amount of the nutrient solution is not exceeded.

The nutrient solution sterilized and purified by the recovered nutrient processing unit 400 is stored in the clarifying nutrient solution tank 300 and is supplied to the nutrient solution bed 100 again when a predetermined amount or more of nutrient solution is stored.

In this case, when the nutrient solution is supplied from the clarification nutrient solution tank 300 to the nutrient solution bed 100, the electrical conductivity of the nutrient solution stored in the clarification nutrient solution tank 300 is measured by the first sensor unit 710. The way valve 800 is controlled by the EC control unit to control the supply ratio of the raw water and the liquid ratio, and the hydrogen ionization concentration of the nutrient solution is measured by the second sensor unit 530 to control the solution tank 510 to the liquid control unit. By controlling at 520, the supply ratio of the acidic solution and the alkaline solution is controlled to correct the electric conductivity and the hydrogenation concentration.

In addition, when the level of the stored nutrient solution is measured by measuring the water level of the clarification nutrient solution tank 300 is low, the nutrient solution is not discharged from the clarification nutrient solution tank 300, the level of the nutrient solution If it is high, the nutrient solution discharge of the recovery nutrient solution tank 200 or the nutrient solution discharge of the recovery nutrient solution processing unit 400 is controlled so that the nutrient solution is not excessively introduced into the purification nutrient solution tank 300.

As such, the nutrient solution discharged from the clarification nutrient solution tank 300 and the raw water and the liquid ratio of which discharge is controlled through the multi-way valve 800 are mixed and supplied again to the nutrient solution bed 100, and a predetermined time has elapsed. After the discharged nutrient solution is supplied back to the recovered nutrient solution tank 200 to circulate the same process.

On the other hand, when cultivating crops using such a nutrient supply circulation system, it is necessary to check the operating status of the system or the state of the nutrient solution at all times, and it is necessary to make it easy to manage the system administrator even in a remote place.

4 shows a configuration for such remote management.

Referring to FIG. 4, the configuration for remote management includes a communication unit 900 for transmitting and receiving a signal through a manager unit 910 and a wired / wireless communication network, and transmitting and receiving various signals with the communication unit 900 to manage and control a system. The manager unit 910 is included.

The communication unit 900 includes a first sensor unit 710 for measuring the electrical conductivity of the nutrient solution stored in the clarification nutrient solution tank 300, a second sensor unit 530 for measuring the hydrogen ionization concentration, and a water level measuring unit. The numerical values measured by each of the three sensor unit 320, the numerical value measured by the fourth sensor unit 411 for measuring the water level of the contact tank 410 of the recovery nutrient processing unit 400, the nutrient solution bed 100 Finally, the numerical value measured by the fifth sensor unit 110 for measuring the electrical conductivity and the hydrogen ionization concentration of the nutrient solution, which is introduced, is transmitted to the communication module 913 of the manager unit 910. Configure other information to be transmitted as well.

The manager unit 910 includes a display module 911 and a system for electrically presenting necessary information among the communication module 913 that exchanges information with the communication unit 900 and the information received by the communication module 913. It is configured to include an administrator control module 912 for generating a signal for control.

The manager unit 910 as described above can be installed and run on the necessary program on a general computer, it may be implemented by installing the application required for a tablet PC or smartphone.

The display device 911 includes a liquid crystal display device (LCD) or a light emitting diode display device (LED), which are generally used. The manager control module 912 includes a keyboard or a touch screen input device as an input means. Do it.

In this case, in order to remotely observe the state of the nutrient solution circulation supply system, the manager control module 912 is not necessary, and the manager control is to control the specific state of the nutrient solution circulation supply system based on the received information. Module 912 is needed.

That is, using the manager control module 912 and the communication module 913, the electrical conductivity of the nutrient solution transmitted through the communication unit 900, the hydrogen ion concentration, the level of various tanks and the like and actively respond to the By changing the electrical conductivity or hydrogen ion concentration setting value of the nutrient solution initially input, or by changing the various operating state of the system, it is possible to remotely create the optimum crop growth environment.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

100-nutrient solution bed 110-5th sensor
200-Recovery nutrient tank 210-First filtration filter
300-Purifying nutrient solution tank 310-Second filtration filter
320-third sensor
400-Recovered Nutrient Treatment Unit
410-Contact Tank 411-4th Sensor Section
420-Ozone Treatment Unit 430-UV Treatment Unit
500-Liquid Supply Unit 510-Solution Tank
520-ambi control section 530-second sensor section
600-Raw Water Tank
700-EC control unit 710-First sensor unit
800-multi-way valve
900-Communication Unit 910-Administrator Unit
911-Display Unit 912-Administrator Control Module
913-communication module

Claims (13)

In the nutrient solution circulation supply system for recovering the nutrient solution supplied to the nutrient solution bed,
A nutrient solution tank communicating with the nutrient solution bed for recovering and storing the nutrient solution discharged from the nutrient solution bed;
A contact tank in communication with the recovery nutrient tank for storing the nutrient solution supplied from the recovery nutrient tank, and an ozone treatment unit for generating ozone and containing the nutrient solution supplied from the contact tank, and returning the nutrient solution to the contact tank. A nutrient solution processing unit for sterilizing and purifying the nutrient solution supplied from the nutrient solution tank;
A clarification nutrient tank communicating with the nutrient nutrient processing unit and receiving and storing the sterile-purified nutrient solution in the recovery nutrient processing unit;
A multi-way valve formed on a conduit for supplying nutrient solution from the clarification nutrient solution tank to the nutrient solution bed;
A raw water tank communicating with the multi-way valve, the raw water tank storing raw water supplied to a duct supplying the nutrient solution from the clarifying nutrient solution tank to the nutrient solution bed;
A liquid ratio supply unit communicating with the multi-way valve and supplying a liquid ratio supplied from the purification nutrient tank to the nutrient solution bed to supply the nutrient solution to the duct;
A first sensor unit installed in the clarification nutrient tank to measure electrical conductivity of the nutrient solution disinfected and discharged by the recovery nutrient processing unit; And
And an EC controller configured to control the multi-way valve based on the electrical conductivity measured by the first sensor to adjust the amount of raw water supplied from the raw water tank and the liquid ratio supplied from the liquid supplying unit. Nutrient solution circulation supply system. The method according to claim 1,
The liquid-liquid supplying unit comprises two or more solution tanks each storing a solution of different components, and a liquid-liquid circulation supply system for controlling the amount of the solution discharged from each of the two or more solution tanks. The method according to claim 2,
It further comprises a second sensor unit for measuring the hydrogen ion concentration of the nutrient solution disinfected by the sterilization and purification process in the recovered nutrient solution processing unit,
At least one of the two or more solution tanks stores an alkaline solution, the other an acidic solution,
The nutrient solution circulation supply system, characterized in that for controlling the amount of the alkaline solution and the acidic solution discharged from the solution tank based on the hydrogen ion concentration measured by the second sensor in the liquid control unit. The method according to claim 1,
And a third sensor unit configured to measure the level of the nutrient solution stored in the clarifying nutrient solution tank. The method according to claim 1,
And a first filtration filter installed on a conduit communicating the recovered nutrient solution tank and the recovered nutrient solution treatment part to filter out suspended impurities. The method according to claim 1,
And a second filtration filter installed on a conduit communicating the recovered nutrient processing unit and the clarification nutrient tank to filter the suspended impurities. The method according to any one of claims 1 to 6,
A fifth sensor unit for measuring the electrical conductivity and the hydrogen ion concentration of the nutrient solution supplied to the nutrient solution bed after passing through the multi-way valve;
A communication unit for transmitting at least one or more of the numerical values measured by the first to third sensor units and the fifth sensor unit through a wired or wireless communication network;
And a manager unit including a display device for displaying a numerical value from the communication unit. The method of claim 7,
The manager unit is a manager control module for generating a signal for controlling the EC control unit and the avi control unit by the input of the manager, respectively, and the signal generated by the manager control module to the EC control unit and the activator via a wired or wireless communication network. Nutrient circulating supply system characterized in that it further comprises a communication module for transmitting each. delete The method according to any one of claims 1 to 6,
The nutrient solution circulation supply system is installed in the contact tank further comprises a ultraviolet treatment unit for sterilizing the nutrient solution and activate the ozone contained in the nutrient solution. The method according to any one of claims 1 to 6,
And a fourth sensor unit for measuring the level of the nutrient solution stored in the contact tank. The method of claim 11,
A fifth sensor unit for measuring the electrical conductivity and the hydrogen ion concentration of the nutrient solution supplied to the nutrient solution bed after passing through the multi-way valve;
A communication unit for transmitting at least one or more numerical values among the numerical values respectively measured by the first to fifth sensor units through a wired or wireless communication network;
And a manager unit including a display device for displaying a numerical value from the communication unit. The method of claim 12,
The manager unit is a manager control module for generating a signal for controlling the EC control unit and the avi control unit by the input of the manager, respectively, and the signal generated by the manager control module to the EC control unit and the activator via a wired or wireless communication network. Nutrient circulating supply system characterized in that it further comprises a communication module for transmitting each.

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