KR100348654B1 - Measuring method of oxygen consumption rate in biological resources and optimal oxygen supply system thereof - Google Patents

Abstract

The present invention relates to a method for measuring the oxygen consumption of the biological resources and to a system for supplying the oxygen of the optimal concentration in the space in which the biological resources are active, for this purpose, the present invention, the oxygen consumption of the biological resources dissolved oxygen measuring instrument By continuous measurement and calculating the non-oxygen consumption rate, and supplying the optimum oxygen concentration required for the active space of the biological resources, problems caused by oxygen shortage or oxygen poisoning of the biological resources can be prevented in advance. .

Description

MEASURING METHOD OF OXYGEN CONSUMPTION RATE IN BIOLOGICAL RESOURCES AND OPTIMAL OXYGEN SUPPLY SYSTEM THEREOF}

The present invention relates to a method for measuring the non-oxygen consumption rate of a biological resource and to a system for supplying optimal oxygen based on the non-oxygen consumption rate calculated in a space in which a biological resource operates, and more particularly, Oxygen consumption is measured using a dissolved oxygen measuring instrument, the oxygen consumption rate of the biomass is calculated using the measured oxygen consumption amount, and the optimal oxygen amount required for the active space of the biological resource is calculated based on the calculated oxygen consumption rate. To provide a system to supply.

Oxygen consumption rate of biological resources increases in proportion to the water temperature. As the temperature increases by 10 degrees, the rate of non-oxygen consumption increases proportionally as the metabolic function of biological resources such as fish doubles. In particular, oxygen consumption of biological resources increases in seasons with relatively high temperatures, such as summer, which often results in oxygen shortages in the spaces in which biological resources operate, and in severe cases, collective death of biological resources can occur.

The conventional method of supplying oxygen in a space where biological resources are active takes a method of supplying a certain amount of oxygen into a space according to a manual operation of a user regardless of a change in surrounding environment.

As described above, in order to prevent the biological resources from being killed due to lack of oxygen, conventionally, a method of continuously supplying oxygen having a concentration higher than the dissolved oxygen concentration required in the space is used. I have another problem that causes oxygen poisoning of my biological resources.

Unlike the above, in the case where the user controls the oxygen concentration supplied to the space by operating the valve of the oxygen generator from time to time, the death or oxygen poisoning of biological resources caused by oxygen shortage can be suppressed to some extent, but the user Since the oxygen concentration is adjusted based on his or her own experience, it is not only fundamentally impossible to adjust the oxygen concentration supplied into the space to an optimum state, but also has a cumbersome problem due to the manual operation of the user.

Therefore, there is an urgent need for a method or a supply system capable of automatically adjusting the dissolved oxygen concentration to an optimum condition in consideration of the oxygen consumption rate of biological resources.

Accordingly, the present invention is to solve the conventional problems as described above, a method for measuring the non-oxygen consumption rate of biological resources and a system for supplying oxygen in the space to the optimum conditions based on the measured non-oxygen consumption rate. The purpose is to provide.

In order to achieve the above object, the present invention, in the system for measuring the non-oxygen consumption rate of biological resources; The dissolved oxygen sensor for measuring the dissolved oxygen concentration as a current value in the space where the biological resources exist, the dissolved oxygen measuring instrument for converting the measured current value into the dissolved oxygen concentration, and the voltage value output from the dissolved oxygen measuring instrument A calculator which converts the oxygen consumption rate and a display which displays a signal provided from the calculator; It provides a method for measuring the rate of non-oxygen consumption of biological resources, including the characteristics.

In order to achieve the above another object, the present invention provides a system for supplying oxygen based on the non-oxygen consumption rate of the biological resources present in the space; Control means for controlling an oxygen supply time and an interruption time of the oxygen generator according to the type of the biological resource and the surrounding environment, and controlling the oxygen supply from the oxygen generator to the space in response to a control signal provided from the control means To the valve; It provides a system for supplying an optimal concentration of oxygen based on the non-oxygen consumption rate of the biomass made.

1 is a block diagram of a system for measuring the non-oxygen consumption rate of a biological resource according to a first embodiment of the present invention,

2 is an evaluation graph of experiments on the dissolved oxygen change in the model tank according to the increase in the density of fish according to the first test example of the present invention;

3 is an evaluation graph for experimenting the change of oxygen consumption in the model tank according to the density of the fish according to the first test example of the present invention,

4 is a graph showing the correlation between the weight of fish and the respiratory volume according to the first test example of the present invention,

5 is a graph showing the non-oxygen consumption rate of the fish according to the first test example of the present invention,

FIG. 6 is an evaluation graph illustrating changes in dissolved oxygen in a model tank according to the dry cell weight of microorganisms according to a second test example of the present invention; FIG.

Figure 7 is an evaluation graph experimenting the change of oxygen consumption in the model tank according to the dry cell weight of the microorganism according to the second test example of the present invention,

8 is a graph showing the correlation of respiratory volume according to the dry cell weight of microorganisms according to the second test example of the present invention,

9 is a graph showing the non-oxygen consumption rate of the microorganism according to the second test example of the present invention,

10 is a block diagram of an oxygen supply system according to a second preferred embodiment of the present invention;

FIG. 11 is an external view front view of the valve control block shown in FIG. 10;

12 is a circuit diagram showing an example of an electric circuit in the valve control block shown in FIG. 10;

FIG. 13 is an evaluation graph illustrating changes in dissolved oxygen concentration in a model water tank according to an operation of an oxygen supply system according to a third test example of the present invention. FIG.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

1 is a block diagram of a system for measuring the non-oxygen consumption rate of a biological resource according to a first embodiment of the present invention, the dissolved oxygen sensor 120, dissolved oxygen measuring instrument 130, operation unit 140 and display unit And 150.

First, in the system for measuring the non-oxygen consumption rate of the biological resources according to the present invention, the dissolved oxygen sensor 120 measures the dissolved oxygen concentration of the tank 110 in which the biological resources exist, the measured detection signal, that is, The current signal is provided to the dissolved oxygen measuring instrument 130, and the provided current signal is converted into the dissolved oxygen concentration in the dissolved oxygen measuring instrument 130, and the converted dissolved oxygen concentration is converted into a corresponding voltage signal to calculate the next stage 130. To provide.

Next, the calculating unit 140 converts the voltage signal provided from the dissolved oxygen measuring unit 130 to calculate the non-oxygen consumption rate, and the display unit 150 displays this.

Here, the operation unit 140 may use a microcomputer method in which a program capable of ordinary differential is installed, and the display unit 150 may be manufactured in a separate type according to one system, in which the display unit 150 is integrated with the operation unit 140. have.

At this time, the biological resources in the tank in Figure 1 includes the usual oxygen-dependent animals, in particular fish and aerobic microorganisms.

[Test Example 1]

In this test example, the dissolved oxygen consumption behavior of aquaculture fish, a common fish species, was measured using a generator to measure the non-oxygen consumption rate of biological resources in a 60-litre model tank using an air generator. Tested.

FIG. 2 is a graph showing the dissolved oxygen concentration in a tank in which a true fish is present as a biological resource over time. As the time increases, the dissolved oxygen concentration in the tank decreases, and the slope rapidly increases as the number of true fish in the tank increases. Can be seen.

3 is a graph showing the cumulative oxygen consumption of fish in the tank with time, it can be seen that the oxygen consumption rapidly increases as the number of true fish as shown in FIG.

4 is a graph showing the correlation between the number of true fish in the tank and the rate of non-oxygen consumption, showing a good linear relationship between the weight and non-oxygen consumption rate of the true fish in the tank, as shown in FIG. Non-oxygen consumption rate (Q _O2 ) per weight was constant at 0.0148 mgO ₂ / kg-sec. Therefore, biological resources, especially fish, have a certain non-oxygen consumption rate depending on the species, size and surrounding environment. Therefore, once the size of the tank, the type and the density of the fish are determined, it is necessary to supply the fish to the tank space in which a particular fish lives. The optimal amount of oxygen can be determined.

[Test Example 2]

In this test example, the dissolved oxygen consumption behavior of complex strains containing large amounts of Bacillus genus and Pseudomonas genus contained in a large amount in a conventional wastewater treatment plant while saturating the dissolved oxygen concentration in a 60-litre model tank using an air generator was used. The test was conducted using a method of measuring the non-oxygen consumption rate of a resource.

FIG. 6 is a graph showing the dissolved oxygen concentration in a tank in which aerobic microorganisms exist as a biological resource over time. As the time increases, the dissolved oxygen concentration in the tank decreases, and as the dry cell weight of the microorganisms in the tank increases. It can be seen that the slope increases rapidly.

Figure 7 is a graph showing the cumulative oxygen consumption of the microorganisms in the tank over time, it can be seen that the oxygen consumption rapidly increases as the dry cell weight of the microorganism increases as shown in FIG.

FIG. 8 is a graph showing the correlation between dry cell weight and non-oxygen consumption rate of microorganisms in a tank, and the dry cell weight and non-oxygen consumption rate of microorganisms in a tank showed an excellent linear relationship, as shown in FIG. The non-oxygen consumption rate (Q _O2 ) per unit weight of microorganisms was constant at 66.5 mgO ₂ / kg-sec. Therefore, biological resources, especially microorganisms have a constant non-oxygen consumption rate depending on species and surrounding environment, so that the optimal amount of oxygen to be supplied per unit time can be determined once the size of the tank and the dry cell weight of the microorganisms are determined.

FIG. 10 is a block diagram of a system for supplying oxygen in a tank in which biological resources exist according to a second preferred embodiment of the present invention, and includes a valve control block 220, a solenoid valve 230, and an oxygen generator 240. Include.

In this case, although only referred to as the oxygen generator 240 in FIG. 10 for convenience of description, an oxygen tank, an air generator, an aberration and / or an ejector may be used according to the form of the system.

Referring to FIG. 10, the valve control block 220 sets the opening time and closing time of the valve 230 of the oxygen generator 240 based on the oxygen consumption rate of the biomass present in the water tank. The solenoid valve 230 is controlled.

The solenoid valve 230 is mounted between the oxygen generator 240 and the oxygen supply pipe connected between the system 210 and the oxygen generator in response to the opening or closing control signal provided from the valve control block 220 described above. The oxygen supply from 240 to the system 210 is regulated.

FIG. 11 illustrates the valve control block 220 of FIG. 10 and includes light emitting diodes 221 and 222, an on-timer 223, and an off-timer 224. The on light emitting diode 221 is turned on for a time when oxygen is supplied to the water tank 210, that is, for a time set in the on-timer 223, and turned off for a time when oxygen supply is cut off. The off light emitting diode 222 is turned on for a time when the supply of oxygen to the water tank 221 is cut off, that is, for a time set by the off timer 224, and is turned off when the supply of oxygen to the water tank 210 is resumed.

On-timer 223 is a terminal for determining the oxygen supply time to the water tank 210 has a range from 1 to 120 minutes and can be variously set according to the non-oxygen consumption rate of the biological resources present in the water tank 210. The off-timer 224 is a terminal for determining the time for which the oxygen supply to the water tank 210 is blocked and waiting, and can be set from 1 to 120 minutes according to the non-oxygen consumption rate of the biological resource.

12 shows the electrical circuit of the valve control block 220. At this time, the electrical circuit is possible if the time can be adjusted by the timer.

[Test Example 3]

In this test example, 5.233 kg of true fish was added to a 60-liter model tank as a biological resource, and the oxygen concentration in the tank was saturated using an oxygen generator 240. The dissolved oxygen consumption behavior of the dissolved oxygen supply system is shown in FIG. 13, and the dissolved oxygen concentration in the water tank decreases the dissolved oxygen concentration at the time when the oxygen supply is blocked, and when the oxygen supply is resumed, dissolved oxygen in the water tank is resumed. Concentrations had an increasing form. In addition, the supply and interruption of oxygen in the water tank 210 is controlled by the valve control block 220, so that the dissolved oxygen concentration in the water tank 210 continuously increases and decreases the oxygen concentration in the water tank within a predetermined range. It could be confirmed that the

In view of the above results, it is possible to accurately measure the non-oxygen consumption rate of the biological resources, and to determine the time to control the solenoid valve 230 of the air generator 240 based on the measured oxygen consumption of the biological resources. The optimum oxygen supply of the biomass was calculated.

As described above, according to the present invention, by accurately measuring the non-oxygen consumption rate of the biological resources, by adjusting the optimum amount of oxygen supply required in the tank to maintain the dissolved oxygen concentration in the tank at the optimum conditions, It can effectively prevent death caused by lack of oxygen and unnecessary oxygen waste.

Claims (8)

In the method of measuring the non-oxygen consumption rate of biological resources, Dissolved oxygen sensor for measuring the dissolved oxygen concentration; A dissolved oxygen measuring instrument for converting the measured dissolved oxygen concentration into a corresponding voltage signal; A calculating unit converting the non-oxygen consumption rate using the output voltage signal; And Method for measuring the non-oxygen consumption rate of the biological resources consisting of a display unit for displaying the non-oxygen consumption rate calculated by the calculation unit. The method of claim 1, The operation unit measures the non-oxygen consumption rate of the biological resources that can use the microcomputer method installed with a normal differential program. The method of claim 1, The method for measuring the non-oxygen consumption rate of the biomass resources, characterized in that the biomass includes the animals that can survive only oxygen, in particular fish, aerobic microorganisms. In the system for supplying oxygen to the tank in which the biological resources connected to the oxygen generator through the oxygen supply pipe, Control means for setting a predetermined oxygen supply time and a cutoff time according to the biological resources present in the tank, and generating an opening / closing control signal for controlling the oxygen supply to the tank based on this; And An oxygen supply system based on the non-oxygen consumption rate of the biomass, the valve being configured to adaptively open / close an oxygen supply or a shutoff from the oxygen generator to the water tank in response to an opening / closing control signal provided from the control means. The method of claim 4, wherein The control means, based on the measured non-oxygen consumption rate of the biological resources non-oxygen consumption rate of the biological resources, characterized in that for generating a signal for controlling the opening and closing of the valve in accordance with a predetermined oxygen supply time and cut off time Based oxygen supply system. The method of claim 4, wherein The control means, the oxygen supply system based on the non-oxygen consumption rate of the biomass, characterized in that it further comprises a light emitting diode for visually displaying when opening and closing the valve. The method of claim 4, wherein The oxygen generator includes a general air generator or air injection aberration, and most preferably based on the non-oxygen consumption rate of biological resources, characterized in that to generate pure oxygen. The method of claim 4, wherein The oxygen supply time and the cut-off time, the oxygen supply system based on the non-oxygen consumption rate of biological resources, characterized in that the change can be set according to the user's needs.