KR100943429B1 - Ballast water treatment system - Google Patents

Abstract

A ballast water dispersion treatment system is presented. The ballast water dispersion treatment system includes a plurality of ballast water treatment units, a neutralizer treatment unit, and a central control unit for controlling the devices, which in turn are filtered, disinfecting, gas separation and discharge, and disinfection residues. A substance detection unit, a device control unit, and a communication unit. The filtration unit filters out more than a certain amount of material from the tank to minimize the influence on the electrodes of the disinfection unit. The disinfection unit disinfects the ballast water flowing from the ballast water tank of the ship and discharges it back to the ballast water tank. The disinfecting residue detection unit detects the density of disinfection residue in the ballast water, and the device control unit presets the disinfection residue detected by the disinfection residue detection unit. The disinfecting unit is controlled through the rectifying unit to maintain the amount, and the communication unit communicates with the central control unit. Designed to fit this configuration into one module for mass production, it can be easily installed and maintained without changing the structure of the ship, while the manufacturing cost is low, and the ballast water can be treated more effectively with less power consumption. Will be able to perform

Ballast water, electrolysis

Description

Ballast water treatment system

The present invention relates to a ballast water dispersion treatment system, and more particularly, to an electrolytic ballast water dispersion treatment system for treating ballast water using electrolysis.

Ballast water refers to seawater filled in a vessel to prevent the vessel from losing its balance when operating after unloading the vessel's cargo. These ballast waters contain a variety of organisms, including plankton contained in the seawater of the area where the ballast water is replaced, the marine pollution due to the replacement of ballast water in other regions is serious.

In 1996, the United States enacted the National Invasive Species Act in 1996, mandating alien species as intruders and mandating the management and control of ballast water.In Australia, the Quarantine Act was amended to define ballast water as imported cargo to be quarantined and directly quarantine. We carry out.

On the other hand, the International Maritime Organization (IMO) signed an international agreement in February 2004, and since 2009, the ballast water sterilizers should be mounted on ships in order to prohibit the entry of the vessels in case of violation.

Accordingly, various technical developments related to such a ballast water treatment device have been made, and a ballast water treatment device using electrolysis is a representative technology that is currently entering the commercialization stage.

The ballast water treatment system currently applied to the ship uses a method of disinfecting the ballast water when filling the ballast water into the vessel and filling the ballast water tank with the sterilized water. According to this method, since a large amount of ballast water is required to fill a ballast water tank of a ship, a ballast water treatment apparatus having a very large processing capacity is required to treat the ballast water for a short time inflowing the ballast water.

In addition, according to such a treatment method, since the concentration of residual chlorine rapidly decreases over time, the microorganisms that have not been completely killed may be propagated, and thus, the sterilization is much stronger than the proper value during long distance operation. However, in order to disinfect ballast water in a short time, the processing capacity of the ballast water treatment device needs to be larger, and ballast water that is more strongly sterilized than necessary causes problems such as high concentration of disinfectant residues upon discharge, causing pollution again. You can. In addition, in the case of using a neutralizing agent during discharge, a lot of difficulties in storage and input of the neutralizing agent.

As such, when the processing capacity of the ballast water treatment apparatus is enlarged, power consumption of the ballast water treatment apparatus is increased, space required for the ship to mount the ballast water treatment apparatus is increased, and installation or maintenance of the ballast water treatment apparatus is performed. Many difficulties arise in management.

This difficulty is greater when the ballast water treatment system is installed on an existing ship than when a new ship is produced, because the existing ship needs to provide an additional space for installing the ballast water treatment device in the existing space. .

In addition, since the capacity of the ballast water tank of the ship varies depending on the size of the ship, the producer of the ballast water treatment device is difficult to mass-produce the ballast water treatment device because it is necessary to manufacture a ballast water treatment device for the ship every time the ship is manufactured. As a result, the ballast water treatment apparatus becomes expensive.

The present invention has been made to solve the above-mentioned conventional problems, the manufacturing cost is low, but can be easily installed and maintained without changing the structure of the vessel, the ballast water treatment more effectively with less power consumption It is an object of the present invention to provide a ballast water distribution processing system that can be performed.

In order to solve the above problems, the ballast water treatment system according to the present invention includes a plurality of ballast water treatment devices and a neutralizer treatment device, and a central control device for controlling these devices. The ballast water treatment device is again a filtration part and a disinfection part. , Rectification unit, gas separation and discharge unit, disinfection residual material detection unit, device control unit, and communication unit. The filter unit minimizes the influence on the electrodes of the sterilizer by filtering a certain amount of material from the tank, and the sterilizer disinfects the ballast water flowing from the ballast water tank of the ship and discharges it back to the ballast water tank, separating and discharging the gas. The unit separates, collects and discharges the fine gas generated during electrolytic disinfection to the outside, and the disinfection residue detection unit detects the density of disinfection residue in the ballast water. The sterilization unit is controlled to maintain a preset amount, and the communication unit communicates with the central control unit.

Since the ballast water is not sterilized when the ballast water flows into the ship, it is sterilized in the ballast tank, so that it can be sterilized while the ship is running. Can handle numbers In addition, by controlling the operation of the disinfection system by detecting the disinfection residue, it is possible to effectively disinfect the ballast water while minimizing the disinfection residue.

In addition, since a plurality of ballast water treatment devices are distributed and operated through the control device, the capacity of the ballast water treatment device can be made smaller, thereby facilitating installation and maintenance of the ballast water treatment device.

In addition, communication between the ballast water treatment unit and the central control unit may be performed wirelessly, which greatly simplifies installation.

In addition, due to the miniaturization of the ballast water treatment apparatus, the treatment capacity can be adjusted through a combination of the ballast water treatment apparatuses, thereby enabling mass production of the ballast water treatment apparatuses, thereby lowering the price of the ballast water treatment apparatuses.

The ballast water dispersion treatment system may further include a temperature control unit for controlling the temperature in the ballast water treatment unit for accurate operation of the device in the polar or tropical regions, and the temperature control unit controls the heat exchange unit of the rectifier included in the disinfecting unit. To control the temperature within the ballast water treatment system. As such, by controlling the temperature in the ballast water treatment device, the normal function of the ballast water treatment device can be performed regardless of the ambient temperature. In addition, the temperature control may be performed by using a heat exchange device of the rectifier in the sterilization unit, so that the temperature control does not have to be provided with a separate device for temperature control.

The ballast water treatment apparatus may be composed of an explosion-proof case. Since the installation location can be diversified when the ballast water treatment unit is miniaturized, this configuration can prevent an accident due to the explosion of the ballast water treatment unit because there may be a risk of explosion of the ballast water treatment unit depending on the installation location. To make it possible.

The ballast water treatment apparatus may further include a disinfection residue removing portion for removing the disinfection residue. This configuration makes it possible to more completely eliminate environmental contaminants that may occur in the ballast water treatment apparatus when the vessel discharges the ballast water.

The ballast water treatment apparatus may further include a filtration unit for filtering the ballast water flowing into the disinfection unit. Such a configuration can prevent a large object from flowing into the ballast water treatment device, thereby preventing a failure of the ballast water treatment device.

The ballast water treatment apparatus may further include a gas discharge unit which separates the gas generated in the sterilization unit from the water, collects and discharges it to the outside of the vessel. This configuration makes it possible to protect the crew from the dangers arising from the concentration of the gases produced.

Since the present invention does not disinfect ballast water when the ballast water flows into a ship, it disinfects the ballast water in the ballast tank, so that disinfection can be performed even while the ship is running, so that a much smaller treatment capacity can be disinfected for a relatively long time. The device will be able to handle the ballast water. In addition, by controlling the operation of the disinfection system by detecting the disinfection residue, it is possible to effectively disinfect the ballast water while minimizing the disinfection residue.

In addition, since a plurality of ballast water treatment devices are distributed and operated through the control device, the capacity of the ballast water treatment device can be made smaller, thereby facilitating installation and maintenance of the ballast water treatment device.

In addition, by miniaturizing the ballast water treatment device and the combination of the ballast water treatment device to adjust the processing capacity, it is possible to mass-produce with a single design of the ballast treatment device can lower the price of the ballast treatment device.

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

1 is a schematic use state diagram of one embodiment of a ballast water dispersion treatment system according to the present invention.

In FIG. 1, a plurality of ballast water tanks 300 are located at the bottom of the ship, and each ballast water tank is provided with a ballast water treatment device 100, and disinfecting residual material around an outlet for discharging the ballast water to the outside of the ship. The removal unit is installed, and the ballast water treatment devices are connected to the central control unit 200.

The ballast water dispersion treatment system according to the present invention includes a plurality of ballast water treatment apparatus 100, a disinfection residue removing unit, and a control device 200 for controlling the plurality of ballast water treatment apparatus.

In FIG. 1, one ballast water treatment device is generally installed for each ballast water tank, but one ballast water treatment device may be installed for a plurality of ballast water tanks, and a plurality of ballast water treatments may be provided in one ballast water tank. It has a combination structure in which the device may be installed.

As such, since the plurality of ballast water treatment apparatuses 100 are distributed and operated through the central control apparatus 200, the capacity of the ballast water treatment apparatus 100 can be made smaller, thereby installing and maintaining the ballast water treatment apparatus. Becomes easy.

In addition, since the treatment capacity can be adjusted by using the number of the ballast water treatment device 100 for a vessel having a variety of ballast water capacity, it is possible to mass-produce the ballast water treatment device 100, the price of the ballast water treatment device 100 Can be lowered.

FIG. 2 is a schematic block diagram of the ballast water treatment apparatus of FIG. 1.

In FIG. 2, the ballast water treatment device 100 includes a disinfection unit 110, a disinfection residue detection unit 120, a device control unit 130, a communication unit 140, a temperature control unit 150, and a disinfection residue removal unit 160. ), A filtration unit 170, and a gas discharge unit 180.

The disinfection unit 110 disinfects the ballast water introduced through the filtration unit 170 from the ballast water tank of the ship and discharges it back to the ballast water tank through the gas discharge unit 180. Various methods of disinfecting the ballast water may be considered. In this embodiment, an electrolytic disinfection method using electrolysis will be described.

Disinfection is performed by an electrochemical reaction generated while the ballast water is in contact with the electrode surface inside the electrolytic module while passing through the electrolytic module in the disinfecting unit 110. The ballast water is instantaneously disinfected by the potential difference and radicals generated during electrolysis and is continuously disinfected by the residual sodium hypochlorite generated.

This method is used in many places, but in this device, sterilization is performed by using residual chlorine, electric sterilization, and ozone, and it is a long time disinfection method in which the ballast water is disinfected while the ship is in operation. .

In the past, a method of disinfecting ballast water by adding hypochlorite and radicals to the water to be treated by electrolysis of water containing salinity when a ballast water is introduced into a vessel has been mainly used. However, due to the extremely short lifespan of radicals contained in the disinfected water after electrolysis, it is not only decomposed before reaching the water to be treated, but also does not utilize disinfection effect due to the potential difference formed near the electrode surface and has a relatively high residual amount of hypochlorous ion. There is a problem that depends on the sterilization efficiency is low, as well as low salt concentration of brackish water or fresh water was difficult to apply.

The method of this embodiment passes the ballast water directly through the electrodes of the electrode set, killing most of the aquatic organisms, E. coli, and common microorganisms remaining therein by potentiometric differences and radicals, and some surviving organisms by residual chlorine. Inactivation is not only high disinfection efficiency but also applicable to brackish water as well as brackish water.

The electrode for the electrolysis uses an electrode coated with iridium on a titanium base material on both the anode and the cathode. As the coating material, other coating materials may be used in addition to iridium.

Precipitation may occur due to electrolysis using low voltage type electrolysis.However, when the electrode is made of the same material and the voltage applied to the electrode is replaced at regular intervals, the precipitated by-products may be separated from the electrode, or The voltage can be reversed only while removing the deposited precipitates.

The disinfection residual material detection unit 120 detects the disinfection residual material density in the ballast water. Disinfectant residues are representative examples of residual chlorine and ozone. In this case, the disinfecting residual material detection unit 120 may detect the disinfecting residual material by using a residual chlorine sensor and an ozone sensor in seawater and mainly using an ozone sensor in brackish water or fresh water.

The device controller 130 controls the disinfecting unit 110 to maintain a predetermined amount of the disinfecting residual material detected by the disinfecting residual material detecting unit 120, and the communication unit 140 communicates with the central control unit to process the ballast water treatment device. It sends the data of the driver and receives the operation contents requested by the manager and operates.

For example, the device controller 130 is programmed such that the electrolytic sterilizer of the disinfecting unit 110 is maintained in a predetermined total amount of residual chlorine, and when the total amount of residual chlorine is lower than the set value, the device control unit 130 of the disinfecting unit 110 is selected. By controlling the rectifier so that the sterilization unit 110 is operated at the maximum efficiency, the total amount of residual chlorine in the ballast water tank can be continuously maintained.

For example, when the set value is set to 7PPM, if the total residual chlorine (TRC) of the ballast number is 1PPM, the disinfection unit 110 generates a maximum TRC of the device at an initial stage, and the closer to the set value, the closer the set value is to 7PPM.

To transmit voltage and current to the electrode of the disinfecting unit 110 for the electrolytic disinfection, the rectifier is in charge of this role is controlled by the device control unit 130. The device controller 130 measures the inflow, ie, the total amount of residual chlorine in the ballast tank, by the sensor in the inflow of the sterilizer module, and adjusts the current value of the rectifier so that this value reaches a set value. At this time, the device controller 130 blocks the rectifier when the voltage rises above a certain level for the protection of the electrode, and alerts the administrator.

The set value and operation control of the ballast water treatment apparatus 100 may be controlled by optical communication between the control device 200 of the ballast water treatment system and the device control unit 130 of the ballast water treatment apparatus 100 or by using a wireless modem. The control device 200 monitors the operation status or the entire operation data of all the ballast water treatment device 100 sterilizer modules and stores them in a memory so that they can be used as data.

If the control apparatus 200 fails, the ballast water treatment apparatus 100 may perform a predetermined operation by itself by its own program. And the data of a certain time can be logged, and when the repair of the control device 200 is finished, the data that is not received from the ballast water treatment device can be passed back.

The temperature controller 150 adjusts the temperature of the ballast water treatment device 100. When the ship passes through a severe region such as the polar region, it is important to maintain the entire ballast water treatment apparatus 100 at a safe temperature in order to prevent the electronic equipment or the disinfecting water from freezing in the disinfection unit 110. In the present invention, by adjusting the temperature of the ballast water treatment apparatus 100, the function of the ballast water treatment apparatus 100 can be normally performed regardless of the temperature of the ballast water.

The temperature controller 150 may control the heat exchanger of the rectifier included in the sterilizer 110 to adjust the temperature of the sterilizer 110. The rectifier may use a water-cooled heat exchanger, the temperature controller 150 may adjust the temperature of the disinfection unit 110 by adjusting the amount of water in the heat exchanger. In this case, since the ballast water treatment apparatus 100 does not have to have a separate device for temperature control, the ballast water treatment apparatus 100 can configure the system much more simply.

The ballast water treatment apparatus 100 may be embedded in an explosion-proof case. According to the present invention, since the ballast water treatment apparatus 100 can be miniaturized and the installation position can be diversified, there may be a risk of explosion of the ballast water treatment apparatus according to the installation position, so that the ballast water can be built into the waterproof explosion-proof case. Accidents due to explosion of the processing device 100 can be prevented.

Explosion-proof case is more useful in the case of special ships that may be volatile gas flow into the ballast water treatment device 100, because there is a risk of explosion if the electronic device in the ballast water treatment device 100 is exposed to volatile gas. .

The disinfection residual material removal unit 160 removes disinfection residual material in the ballast water. Countries around the world define the content of active substances required by countries in the discharge of ballast water. The goal of ballast water regulation is not only to prevent the transfer of organisms, but also to minimize the impact of the environment on the country due to ballast water. By installing a residual chlorine remover at the ballast water discharge position at which the ship discharges the ballast water, it is possible to more completely eliminate the environmental pollution factors that may occur in the ballast water treatment apparatus 100.

For example, in case of outboard discharge of ballast water, the total residual chlorine content of ballast water discharged outboard can be controlled by using a neutralizer injector equipped on the outboard side with a neutralizer which is already proportional to the total residual chlorine content of each tank. .

The filtration unit 170 filters the ballast water flowing into the disinfection unit 110. Since the electrode spacing in the sterilization unit 110 is quite narrow, it is to filter large organisms for electrode protection. Such a configuration can prevent a large object from flowing into the ballast water treatment device, thereby preventing a failure of the ballast water treatment device.

When the pump is put into the ballast water tank and the ballast water is introduced into the ballast water treatment apparatus 100 using the pump, the ballast water passes through the filter. While passing through the filter, this material is very slow and this material, which can cause problems with the sterilizer's electrodes, is filtered here. The filtered influent is introduced into the electrolytic sterilizer of the sterilizer 110.

The gas discharge unit 180 separates water and gas from the gas generated in the disinfecting unit 110 through a gas separator and discharges the gas collected thereon to the outside by this function. It can separate and collect the gas after passing through the sterilizer, and continuously discharge the gas in the ballast tank to lower the ratio of oxygen, hydrogen, chlorine gas, etc., to protect the source from the concentration of the generated gas and leakage. Will be.

For example, ballast water is sterilized by electrolytic disinfection by electrodes, and the sterilized water enters the secondary tank and has a low flow rate. Here, by means of a gas branching device designed on the structure of the tank and on the half-side of the tank, the small air in the water is combined and formed a vortex by the flow of water by the poly, and the combined gas is collected into the upper layer of the tank. This collected air is taken out through an automatic gas exhauster. That is, gas generated by electrolysis generated during electrolytic disinfection is discharged to the outside through the automatic gas outlet. After the gas has been discharged, the disinfectant is introduced back into the ballast tank through the outlet.

The apparatus of the present invention described above includes a sterilizer used in each ballast tank and a comprehensive manager for controlling and managing several sterilizers, and a neutralizer input device for matching the total national chlorine concentration at the outboard discharge of ballast water. It is a ballast water dispersion processing device used in ships.

The device utilizes electrolytic disinfection for ballast water disinfection, and filters, sterilizers, and collectors to collect gas from the disinfected water, and trapped gases to protect the sterilizers from inflow from the pumps of the ballast water tanks. Automatic gas discharger, gas discharger to discharge gas from tanks, rectifier to operate sterilizer, control of rectifier operation and data, controller to share data with general manager, residual chlorine in ballast water tank Sensors to measure the temperature, wireless and wired modems to communicate with the Comprehensive Manager, temperature maintainers to maintain the temperature inside the sterilizer, and the devices are housed in a single case to protect against external temperatures and explosions.

Although the present invention has been described in terms of some preferred embodiments, the scope of the present invention should not be limited thereby, but should be construed as modifications or improvements of the above embodiments supported by the claims.

1 is a schematic use state diagram of one embodiment of a ballast water dispersion treatment system according to the present invention;

FIG. 2 is a schematic block diagram of the ballast water treatment apparatus of FIG. 1. FIG.

Claims (9)

A ballast water distribution processing system comprising a plurality of ballast water treatment devices and a central control device for controlling the plurality of ballast water treatment devices. Each ballast water treatment device is Disinfection unit for disinfecting the ballast water flowing from the ballast water tank of the ship by electrolysis to discharge to the ballast water tank again; A disinfection residual material detection unit for detecting a density of disinfecting residual material in the ballast water; An apparatus control unit which controls the disinfecting unit to maintain a predetermined amount of the disinfecting residual material detected by the disinfecting residual material detector; And It includes a communication unit for communicating with the central control device, A temperature controller for controlling a temperature of the ballast water treatment device; And a gas discharger configured to collect the gas generated in the disinfecting unit and discharge the gas to the outside of the vessel. The temperature control unit controls the heat exchanger of the rectifier included in the disinfection unit to adjust the temperature of the disinfection unit, And the gas discharge unit collects the gas by forming a vortex so that the gases in the ballast water merge with each other and rise to an upper layer of the ballast water tank. delete delete The method of claim 1, The ballast water treatment apparatus is a ballast water treatment system, characterized in that embedded in the explosion-proof case. The method of claim 1, The ballast water treatment apparatus further comprises a disinfecting residue removing unit for removing the disinfecting residue. The method of claim 1, The ballast water treatment apparatus further comprises a filtration unit for filtering the incoming ballast water. delete The method of claim 1, The ballast water treatment device is a ballast water treatment system, characterized in that one ballast water treatment device disinfects the ballast water flowing from the plurality of ballast water tanks. The method of claim 1, The ballast water treatment device is a ballast water dispersion treatment system, characterized in that the plurality of ballast water treatment device to sterilize the ballast water flowing from one ballast water tank.

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