KR20170024278A - Silver ion type fresh water disinfection systems for marine structures - Google Patents

Silver ion type fresh water disinfection systems for marine structures Download PDF

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Publication number
KR20170024278A
KR20170024278A KR1020150119327A KR20150119327A KR20170024278A KR 20170024278 A KR20170024278 A KR 20170024278A KR 1020150119327 A KR1020150119327 A KR 1020150119327A KR 20150119327 A KR20150119327 A KR 20150119327A KR 20170024278 A KR20170024278 A KR 20170024278A
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KR
South Korea
Prior art keywords
silver
water
ion
electrolytic reactor
type fresh
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KR1020150119327A
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Korean (ko)
Inventor
주형규
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주형규
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Application filed by 주형규 filed Critical 주형규
Priority to KR1020150119327A priority Critical patent/KR20170024278A/en
Publication of KR20170024278A publication Critical patent/KR20170024278A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J1/00Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/46Apparatus for electrochemical processes
    • C02F2201/461Electrolysis apparatus
    • C02F2201/46105Details relating to the electrolytic devices
    • C02F2201/4612Controlling or monitoring
    • C02F2201/46125Electrical variables
    • C02F2201/4613Inversing polarity

Abstract

The present invention relates to a silver ion-type fresh water sterilization system for a marine structure such as a drillship, oil tanker, and merchant ship, comprising: an electrolytic reactor in which two silver electrodes are installed and a raw water inlet and an ion water outlet are installed and which has a pressure gauge to check the internal pressure; a solenoid valve which is installed on a supply pipe which connects the raw water inlet and a filter; a flowmeter which is installed on a discharge pipe which connects the ion water outlet and an ion water storage tank; a power supply unit which comprises a polarity conversion unit which supplies power to the silver electrodes of the electrolytic reactor; and a control panel to which the solenoid valve and the flowmeter are electrically connected and which controls the solenoid valve and the flowmeter. The voltage supplied to the power supply unit is adjusted in accordance with water consumption checked by the flowmeter installed on the discharge pipe, and the pH concentration is controlled. In addition, the higher the voltage, the shorter the conversion time of the polarity conversion unit, and the lower the voltage, the longer the conversion time of the polarity conversion unit to be between 0.5 and 5 seconds. In addition, the electrolytic reactor comprises a sensor which is able to check the abrasion of the silver electrodes inside. The control panel comprises a display lamp which displays the abrasion of the silver electrodes and which is turned on by the control panel when there is no signal detected by the sensor. The present invention aims to provide a silver ion-type fresh water sterilization system for a marine structure, which is able to prevent a film from forming on the surface of silver electrodes and to allow a user to easily check the replacement cycle of the silver electrodes.

Description

[0001] The present invention relates to a silver ion type fresh water disinfection system for marine structures,

The present invention relates to a silver type fresh water disinfection system for an offshore structure that is applied to an offshore structure such as a drill ship, a tanker or a merchant ship. More particularly, the present invention provides two silver electrodes, And the amount of ionized water passed through the electrolytic reactor is checked. Based on this, the voltage supplied to the silver electrode is adjusted based on the amount of the sterilized ionized water, And to provide a silver ion type fresh water disinfection system for an offshore structure capable of simultaneously providing a function of checking the consumption amount of the silver electrode and easily checking the replacement cycle.

Freshwater tanks are installed for residents in offshore structures such as drill rigs, oil tankers or merchant ships, and pipelines are installed to provide clean water to service areas in offshore structures.

In the case of such fresh water supply, microorganisms propagate in the process of storing foreign matter caused by corrosion of piping and fresh water, and sterilization apparatus is installed to sterilize fresh water.

Examples of the sterilizing apparatus include an ultraviolet sterilizing apparatus, a chemical sterilizing apparatus, and a silver ion sterilizing apparatus.

Firstly, the chemical sterilization device is a method of sterilizing various harmful bacteria by injecting chemicals into drinking water. However, this chemical sterilization device can not be a preferable sterilization method because chemicals harmful to human body are dissolved in drinking water.

The second ultraviolet sterilization apparatus is a method in which ultraviolet rays are irradiated to drinking water to sterilize harmful bacteria contained in drinking water. However, this ultraviolet sterilization apparatus corresponds to a momentary sterilization method, and therefore, sterilized drinking water is taken by branch piping It is disadvantageous that the bacteria can reproduce in the process of being supplied to the use place.

The third silver ion sterilization apparatus comprises a plurality of silver plates, and (+) and (-) electrode terminals which support the silver plate and apply a (+) current and a (Ag +) is eluted from a silver plate to which a (+) current is applied to dissolve a certain concentration of silver ions in water, and silver ions generated through the silver ion sterilizing apparatus are contained in water It is a method to sterilize various harmful bacteria that are present.

The conventional (+) and (-) electrode terminals used in the silver ion sterilizing apparatus usually use a metal material having a relatively high durability so as to allow current to pass therethrough and to support the silver plate, It is common to use stainless steel.

Meanwhile, the silver plate and the electrode terminals are always immersed in water for sterilization treatment. Although the electrode terminals are made of stainless steel having good corrosion resistance, corrosion occurs when a certain period of time is elapsed, There is a problem that harmful metal components are generated, and harmful metal components generated at this time are dissolved in drinking water, thereby causing contamination of drinking water.

A silver ion sterilizing device of the Korean Utility Model Registration No. Y-A-20-0440411 (Jun. 12, 2008) has been proposed for solving such a problem. The silver ion sterilizing device is composed of a supply path and a discharge path A housing in which drinking water is stored; A cylinder installed in the housing and receiving drinking water introduced into the housing through a through hole formed in an upper surface thereof and receiving an external negative current; A plurality of fine holes formed in the cylinder to allow the drinking water introduced into the cylinder to pass therethrough and a positive (+) current applied thereto; And a plurality of silver beads accommodated in the mesh pipe and sterilizing the drinking water by generating silver ions through the (+) and (-) currents applied to the cylinder and the mesh pipe in contact with the drinking water, It is possible to prevent contamination of drinking water by preventing various harmful metal substances from being discharged by preventing corrosion while having excellent durability by manufacturing cylinder and net tube body to which (-) current and (+) current are applied. Effect can be provided.

However, in the case of the above-described configuration, there is no means to suitably provide the PH concentration, and it is impossible to check the wear of the silver bead, so that it has been difficult to check the replacement cycle.

On the other hand, in a commonly used electrolytic reactor, a silver electrode is used as a material of a cathode, and a stainless electrode is used as a material of a cathode. When water is electrolyzed at a limit current density or lower, Hydrogen is generated in the cathode, and silver is dissolved in the anode to generate silver ions.

Cathode reaction: 2H + + 2e-? H2 (g)

Anode reaction: Ag → Ag + + e- ... Reaction formula (1)

However, when electrolysis of water electrolysis at a limit current density or more, an additional reaction such as reaction formula (2) occurs at the anode and oxygen is generated.

(2) - (2) " (2) "

As shown in the reaction formula (2), when oxygen is generated in the anode, OH radicals are generated on the surface of the anode during the electrolysis of water, and the OH radical adsorbs on the surface of the electrode in the form of oxygen, (1) and (2), which are dissolved in the anode (-) and reacted with the oxygen adsorbed in the process of oxygen generation, A film is formed.

4Ag + + O2 (ad) + 4e-? 2Ag2O

2Ag + - > 2Ag2 + + 2e-

2Ag2 + + O2 (ad)? 2AgO ... (3)

That is, when electrolysis of water having a low conductivity such as drinking water is performed, the operation condition may be an operating condition in which oxygen overvoltage may occur. Therefore, if continuous operation is performed without changing the polarity, An oxide film is formed.

As the resistance of the electrolytic reactor is increased by the silver oxide film formed on the electrode surface and the current efficiency is decreased, the silver ion generation amount is decreased and the performance of the silver electrolytic sterilizer is deteriorated.

That is, the current efficiency is defined as a percentage of the amount of current required for the theoretical production amount and the actual amount of current. Therefore, theoretically, the amount of current applied to the electrolytic reactor should be dissolved in the ion, but when the current is consumed in the oxygen generation rather than the current is consumed only in the silver ion dissolution, the amount of generated ions is decreased, This is a problem that causes the result.

As a prior art for solving these problems, there is provided a silver electrolytic sterilization system for drinking water of Korean Patent Registration No. B1-010725658 (2007.06.07.), And its constitution is a system for introducing the incoming raw water into a storage tank A drain pump installed at a rear end of the storage tank for discharging drinking water introduced into the storage tank and a drinking water supply unit installed at a rear end of the drain pump for supplying drinking water introduced through the flow controller and the solenoid valve to the storage tank A silver electrolytic sterilization system for drinking water comprising an electrolytic reactor and a control unit for controlling the electrolytic reactor, an inlet / outlet pump, and a solenoid valve, wherein the electrolytic reactor comprises two silver electrodes, A current supply unit for supplying an electrolytic current to the silver electrode of the reactor, and a current supply unit connected between the current supply unit and the silver electrode A pulse generating unit connected to the electrode of the electrolytic reactor and generating a microvibration to prevent the silver oxide film from adhering to the surface of the silver electrode; A pulse generating unit, and a control unit for controlling the polarity switching unit,

A flow rate sensor for outputting an electric signal proportional to the water pressure of the raw water flowing in is provided between the rear end of the inflow pump and the control unit of the control unit and a water flow sensor is provided between the inflow side of the electrolysis reactor and the control unit, And a flow controller for controlling the amount of water flowing into the electrolytic reactor according to the water pressure.

However, in the above configuration, since the polarity changing time of the polarity switching unit is set at a constant cycle, there is a problem that an oxide film is formed on the surface of the silver electrode, so that a pulse generating unit for finely vibrating the silver electrode needs to be additionally provided. There is no means for checking the PH concentration of the silver electrode and controlling the voltage supplied to the silver electrode, and thus it has been difficult to control the PH concentration.

In addition, since it is impossible to confirm the wear rate of the silver electrode, it is difficult to know the replacement period of the silver electrode, so that it is difficult to confirm the state of the silver electrode by separating the electrolytic reactor from time to time to check the silver electrode wear.

KR 200440411 Y1 Dec 2008. KR 100725658 B 2007.06.07.

Accordingly, the inventor of the present invention has found that, in the silver ion type fresh water disinfection system used in the fresh water supply system in the conventional offshore structure, problems in coating silver electrode, problems in controlling PH concentration, The present invention provides a silver ion type fresh water disinfection system for an offshore structure,

In the present invention, DC power is supplied to two silver electrodes provided in an electrolytic reactor, and the polarity of the (+) electrode and the (-) electrode is changed in a short time, The amount of sterilized ionized water passed through the reactor was checked, and the pH was adjusted by adjusting the voltage supplied to the silver electrode, so that the pH could be provided within the range of 6.5 to 8.5 suitable for drinking water. Silver ion type clean water disinfection system for offshore structures that simultaneously detects the amount of consumption by the detection sensor and turns on the indicator lamp provided on the control unit when the silver electrode is worn, Respectively.

According to an aspect of the present invention, there is provided an electrolytic apparatus comprising: an electrolytic reactor provided with two silver electrodes therein and provided with a raw water inlet and an ionized water outlet and having a pressure gauge for checking the internal pressure; A power supply unit including a solenoid valve, a flow meter installed on a discharge pipe connecting the ionized water discharge port and the ionized water storage tank, and a polarity conversion unit for supplying power to the silver electrode of the electrolytic reactor, and a solenoid valve and a flow meter, 1. A silver ion type fresh water sterilization system for an ocean structure comprising a control panel for controlling;

The voltage supplied to the power supply unit is adjusted to adjust the PH concentration according to the amount of water consumed to be checked by the flow meter provided on the discharge pipe. Further, as the voltage is higher, the conversion time of the polarity conversion unit is shorter and the voltage is lower, To be made within a range of 0.5 to 5 seconds.

In addition, the electrolytic reactor is provided with a sensing sensor for checking the internal wear of the silver electrode, and an indicator lamp for indicating the state of wear of the silver electrode is installed on the control panel. When there is no detection signal of the silver sensor, And lighted.

The silver ion type fresh water disinfection system for an offshore structure provided in the present invention has the following effects.

-DC power source, two silver electrodes are alternately used as (+) and (-) electrodes, so silver ion sterilization can be smoothly performed.

- It is possible to change the polarity quickly within the range of 0.5 to 5 seconds through the polarity conversion part, so that the silver electrode surface film formation can be prevented.

- The voltage supplied to the two silver electrodes is automatically controlled according to the amount of ionized water that is checked by the pressure gauge, so the supply of silver ions is controlled according to the amount of water used, so the sterilizing effect can be maintained in an optimal state.

- Since the abrasion state of the silver electrode is checked by the detection sensor and it is noticed through the display lamp, it is possible to check the abrasion state of the silver electrode and to provide convenience of maintenance that can be replaced without troubles such as separation of the electrolytic reactor .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a fresh water supply system installed in a silver ion type fresh water disinfection system for an offshore structure,
2 is a schematic configuration diagram of a silver ion type fresh water disinfection system for an offshore structure provided by the present invention

Hereinafter, a preferred embodiment of a silver ion type fresh water disinfection system for an offshore structure provided in the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a fresh water supply system provided with a silver ion type fresh water sterilization system for an offshore structure according to the present invention, and FIG. 2 is a schematic diagram of a silver ion type fresh water sterilization system for an offshore structure, Respectively.

The silver ion type fresh water disinfection system 1 for an offshore structure to be provided in the present invention is constructed by connecting a raw water tank 2 and a strainer 3, which interfere with raw water supplied from a seawater desalination plant, to a supply pipe 4 And a pressurizing pump 5 is installed in the connected supply pipe 4 so that the raw water can be supplied to the filter 3 side. In addition, two silver electrodes 7 are provided in the inside of the electrolytic reactor 6, and a pressure gauge 19 for checking the ion water pressure therein is provided. The raw water inlet 8 of the electrolytic reactor 6 in which the raw water inlet 8 and the ion water outlet 9 are provided The ionized water storage tank 10 and the ionized water storage tank 10 are connected to each other through a supply pipe 4 and a water supply outlet 8 and a filter 3 are connected to each other by a supply pipe 4, And an ionized water supply pump 13 is installed in the center of the ionized water supply pipe 12. The ionized water supply pipe 12 is connected to the ionized water supply pipe 12,

At this time, a solenoid valve 14 is installed on the supply pipe 4 connecting the filter 3 and the raw water inlet 8 and a flow meter 15 is installed on the discharge pipe 11 to control the control panel And the polarity converting unit 18a included in the control panel 16 is connected to the control panel 16 so that the raw water can be supplied by opening the solenoid valve 14 according to the detection signal of the flow meter 15, And the power supply unit 18 including the power supply unit 18 for converting the polarity of the silver electrode 7.

This configuration opens the solenoid valve 14 in the control panel 16 when the pressure of the pressure gauge 19 provided in the discharge liberator 6 is lowered due to ionized water consumption of the ionized water storage tank 10, (7) is supplied with silver ions to supply ionized water. This system is the same as the silver ion type fresh water disinfection system (1) for an offshore structure which is generally used.

In the present invention, in constructing the conventional silver ion type fresh water disinfection system 1 for an offshore structure as described above, the DC power is supplied to the two silver electrodes 7 installed in the electrolytic reactor 6 And the polarity conversion time of the polarity converting unit 18a included in the power supply unit 18 can be periodically converted within a short time of 0.5 to 5 seconds to prevent the formation of a film on the surface of the silver electrode 7 .

The ion-sterilized ionized water supplied onto the discharge pipe 11 is supplied to the microcomputer 17 according to the PH concentration so that the PH concentration can be provided within the range of 6.5 to 8.5 suitable for drinking water. Lt; / RTI >

In the present invention, a voltage of DC 12 to 24 V is supplied in the present invention, and it is supplied in a state of PH 8.5 or more through a supply pipe 4. The silver electrode 7 is used to form silver ions, It is sterilized.

At this time, in the case of the present invention, a 12V voltage is supplied when the water consumption amount provided through the flow meter 15 is small, and a 24V voltage is supplied when the water consumption amount is large, so that the PH concentration is provided within the range of 6.5 to 8.5 suitable for drinking water To be provided. Also, when the 12V voltage is provided, the polarity conversion time is set to 5 seconds, and when the 24V voltage is supplied, the polarity conversion time is set to 0.5 second to form a coating on the surface of the silver electrode 7 So that it can be prevented.

In such a case, not only the functionality of the silver ion type fresh water disinfection system 1 for existing marine structures is provided, but also the method of alternately using the two silver electrodes 7 with different current intensities The coating formed on the surface of the electrode 7 is minimized, and silver ions of good quality can be supplied.

That is, one of the two silver electrodes 7 becomes a (+) electrode and the other electrode becomes a (-) electrode. At this time, a negative electrode reaction such as 2H + + 2e-? H2 (g) (+) Electrode, water electrolysis such as Ag + Ag + + eq. (1) and 4OH- → 4OH (ad) → 2O2 (ad) → 2O2 (2) generated by electrolysis in the electrolytic cell, oxygen is generated and thereby a film is formed on the outside. In the present invention, the polarity is changed and the film is prevented from being formed in a short time .

In the present invention, the detection sensor 20 is installed in the electrolytic reactor 6 so that the two silver electrodes 7 installed therein can be checked for wear, and the detection sensor 20 is connected to the control panel The control panel 16 is provided with a display lamp 21 that is turned on when there is a signal from the detection sensor 20.

This is because the sensing sensor 20 normally uses the proximity sensor to sense the electrode 7 and when the silver electrode 7 is worn out and the detection of the sensing sensor 20 is lost, And the indicator lamp 21 is turned on so that the state of abrasion of the silver electrode 7 can be grasped and exchanged without disassembling the electrolytic reactor 6, It is.

The microcomputer 17 applied to the control panel 16 of the present invention receives and compares the measured value of the flow meter 15 and calculates the polarity of the power supply unit 18 and the polarity converting unit 18a And a function of turning on the display lamp 21 in response to a signal of the detection sensor 20, is a means for executing an instruction.

Therefore, when the present invention is used, it is possible to continuously provide anionically weak anion water of pH 5.8 to 6.5, which is suitable for drinking water, in accordance with the change in water consumption by providing the same functionality as described above.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of protection of the present invention should not be limited to the described embodiment, but should be determined by the equivalents as well as the claims that follow.

1: Silver ion type fresh water disinfection system for offshore structure
2: raw water tank 3: filter
4: feed pipe 5: pressure pump
6: electrolytic reactor 7: silver electrode
8: raw water inlet 9: ionized water outlet
10: ionized water storage tank 11: discharge pipe
12: ionized water supply pipe 13: ionized water supply pump
14: Solenoid valve 15: Flow meter
16: Control panel 17: Microcomputer
18: Power Supply Unit 18a: Polarity Conversion Unit
19: pressure gauge 20: detection sensor
21: Indication lamp

Claims (2)

An electrolytic reactor 6 in which two silver electrodes 7 are installed inside and a pressure gauge 19 is installed and a raw water inlet 8 and an ion water outlet 9 are installed; a raw water inlet 8 and a strainer 3; A flow meter 15 provided on a discharge pipe 11 for connecting the ion water discharge port 9 and the ionized water storage tank 10 to each other through a solenoid valve 14 installed on a supply pipe 4 connected to the electrolytic reactor 1, A power supply unit 18 including a polarity converting unit 18a for supplying power to the silver electrode 7 of the microcomputer 6 and a microcomputer 17 for electrically controlling the solenoid valve 14 and the flow meter 15, A control system for a silver ion type fresh water sterilization system (1) for marine structures, comprising:
The PH concentration is adjusted by adding or subtracting the voltage of 12 to 24 V DC supplied to the power supply unit 18 according to the amount of water to be checked by the flow meter 15 installed on the discharge pipe 11. Further, Wherein the conversion time of the polarity converting unit (18a) is made longer within a range of 0.5 to 5 seconds as the conversion time of the ion exchange unit (18a) is shorter and the voltage is lower.
The method of claim 1,
The electrolytic reactor 6 is provided with a sensing sensor 20 for checking the state of wear of the silver electrode 7 inside,
The control panel 16 is provided with a display lamp 21 for indicating the wear state of the silver electrode 7 and is turned on by the control panel 16 when there is no detection signal of the detection sensor 20. [ Silver ion type fresh water disinfection system for marine structures.
KR1020150119327A 2015-08-25 2015-08-25 Silver ion type fresh water disinfection systems for marine structures KR20170024278A (en)

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KR1020150119327A KR20170024278A (en) 2015-08-25 2015-08-25 Silver ion type fresh water disinfection systems for marine structures

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725658B1 (en) 2006-10-20 2007-06-07 아쿠아셀 주식회사 Sterilizing system of drinking water using silver electrolysis
KR200440411Y1 (en) 2007-03-23 2008-06-12 삼건세기(주) apparatus of sterilization sliver ion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725658B1 (en) 2006-10-20 2007-06-07 아쿠아셀 주식회사 Sterilizing system of drinking water using silver electrolysis
KR200440411Y1 (en) 2007-03-23 2008-06-12 삼건세기(주) apparatus of sterilization sliver ion

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