WO2014129710A1

WO2014129710A1 - In-line treatment apparatus for ballast water having circulation type pipeline for suppressing biofilm formation

Info

Publication number: WO2014129710A1
Application number: PCT/KR2013/007780
Authority: WO
Inventors: 박옥열; 박성호; 배진우; 공길영
Original assignee: 주식회사 케이티마린
Priority date: 2013-02-22
Filing date: 2013-08-29
Publication date: 2014-08-28
Also published as: JP2016507376A; CN105008287A; KR101296207B1

Abstract

The present invention relates to an in-line treatment apparatus for ballast water having a circulation type pipeline for suppressing biofilm formation, and the apparatus can: supply, to a pre-treatment unit, mixing water of outflow water discharged from an electrolysis unit and inflow water introduced from a front end of the pre-treatment unit through a circulation type pipeline; can reduce the formation of the biofilm by suppressing the growth and proliferation of microorganisms which are attached to and proliferate on the pre-treatment unit provided and operated in a front end of the electrolysis unit and the pipeline thereof in the treatment apparatus for ballast water using the electrolysis unit, and thereby enables a stable management of ballast water by reducing a flow rate and controlling a flow speed and an increase of a load.

Description

In-line treatment device for ballast water with circulating piping to suppress biofilm formation

The present invention supplies the mixed water mixed with the inflow water flowing out of the front end of the pretreatment apparatus through the circulation pipe into the pretreatment apparatus by the oxidant contained in the mixed water to the front end of the electrolysis apparatus. It is possible to suppress formation and removal of biofilm which can be fixed by microorganisms attached and proliferated in the pretreatment device installed and operated, and the circulation ballast water for the circulation type pipe for suppressing the production of biofilm. An inline processing apparatus.

The ballast water is water that is filled in the vessel to maintain the balance of the vessel when the vessel is unloaded and operated, and the ballast water is collected in the ballast water storage tank without loading the cargo in a certain area. It is operated in the form of drainage from the ballast water storage tank as the cargo is loaded and then discharged from the ballast water storage tank as loading progresses. At this time, marine life in a certain area contained in the ballast water to be taken may move to another area and be exposed to a new environment. Accordingly, invasion of indigenous species into indigenous species destroys the marine ecosystem or environmental and economic It causes loss and poses a human hazard from various pathogens.

Thus, in 2004, the International Maritime Organization (IMO) enacted an agreement on the management of ballast water and sediment in ships to prevent ecosystem destruction and pollution. Two methods of water exchange and two methods of disinfecting and disinfecting the ballast water in the ship by physical and chemical methods were proposed. The point of application depends on the construction date of the ship and the capacity of ballast water in the ship, and the exchange of ballast water requires a lot of time and effort, which may pose a danger to the safety of the ship and is impossible to work during close navigation. It is required to develop a practical ballast water treatment system in consideration of sex and economic feasibility.

In the conventional ballast water treatment system, a ballast process includes a pretreatment process (or no pretreatment process), and electrolysis, ozone treatment, ultraviolet irradiation, or chemical injection are performed in the ballast process. The ballast water treatment device using the conventional electrolysis device is generally a pretreatment device (filter, microbial impact after driving the pump 10 when the ballast water flows from the sea water 600, as shown in Figure 1) And a damage device) 30 and the electrolysis device 40 in parallel, and kill the microorganisms in the ballast water by the high concentration of strong oxidant produced by electrolysis and transfer it to the ballast water storage tank 700. do. In addition, the residual chlorine measurement sensor 50 is provided and operated to control the concentration of the high concentration oxidant in the device.

In the operation of the main process, the high concentration of oxides are generated as a mechanism for killing and removing the microorganisms contained in the ballast water, thereby preventing the growth or attachment of microorganisms to the pipes at the end of the main construction method.

In addition, various pretreatment techniques (filtration, baffle), such as a centrifuge, are used at the front end of the main process to reduce the load on the main method. Applicant (or inventor) is a physical pre-treatment device 100 that can kill, remove and damage the zooplankton and aquatic microorganisms by physical impact by the jet flow induced impeller 11 installed in the pipeline as shown in FIG. And, the positive electrode plate 26 and the negative electrode plate 27 are installed alternately therein, the electrolysis device 200 and the electrolysis device (200) to completely kill, sterilize and remove the underwater microorganisms by generating residual chlorine ( Technology for the in-line ballast water treatment device including a neutralizing device 300 for neutralizing the residual residual chlorine contained in the treated water stored in the ballast water storage tank 500 through the 200 before discharge to the sea The patent application was registered as a patent, such as Korea Patent Publication No. 1118055.

Inline treatment device of ballast water of the Republic of Korea Patent Publication No. 1118055 is the microorganisms damaged in the pretreatment is killed by the chlorine water discharged from the electrolysis device, chlorine remains in the water transferred to the ballast water storage tank microorganisms It has the effect of minimizing the impact on marine ecosystem by neutralizing and discharging the ballast water to the ocean, but the microorganisms of relatively small size remain in the pretreatment and its pipes without being killed. There is always the possibility of inflow of water into the pipe after operation, which can create biofilm on the wall of the pipe and inside of the pretreatment device, and the growth of these biofilms can make it difficult to control each device. Accompanying the reduction, the inflow pump, piping and various equipment are loaded to smoothly. In order to solve these problems, a method of separating and cleaning the device manually by an operator (a ship's crew) is periodically used to solve these problems. There was a problem that could possibly occur.

In order to solve the above problems, the present invention transfers and injects some of the high concentration oxidant produced by the electrolysis device to the front end of the pretreatment apparatus by means of a circulating pump capable of adjusting the flow rate, thereby forming a biofilm inside the pretreatment apparatus and its pipe. An object of the present invention is to provide an inline treatment apparatus for ballast water in which a circulation pipe for suppressing biofilm generation is installed.

The present invention provides a ballast water inline treatment apparatus comprising a pretreatment device and an electrolysis device,

The outflow pipe of the electrolysis device includes a transfer pipe for transferring the outflow water to the ballast water storage tank; An in-line treatment device for ballast water provided with a circulation type pipe for suppressing biofilm generation, characterized in that it is branched to the circulation pipe conveying to the inlet pipe of the pretreatment device as a problem solving means.

And the circulation pipe is penetrated through the outflow pipe of the electrolysis device, the inlet of the circulation pipe in the outflow pipe is characterized in that it is arranged in the reverse direction of the flow direction of the outflow water flowing out from the electrolysis device.

In addition, the circulation pipe is penetrated through the inlet pipe of the pretreatment device, the outlet of the circulation pipe in the inlet pipe is characterized in that it is arranged in the forward direction of the flow direction of the inflow water flowing from the pretreatment device.

On the other hand, the circulation pipe is characterized in that the circulation pump which can adjust the flow rate is installed, the valve is installed at the front and rear ends of the pipe in which the circulation pump is installed.

As described above, in the ballast water treatment apparatus using the electrolysis apparatus, a portion of the high concentration of strong oxidant generated after electrolysis is provided with a circulation pump and pipes which automatically adjust the flow rate, so that the front end of the pretreatment apparatus. It is possible to reduce the formation of biofilms by inhibiting the growth and proliferation of microorganisms in the pretreatment apparatus and the pipes according to the oxidizing power by transporting them to the pretreatment apparatus, and by controlling the reduction of flow rate, flow rate and load increase by the above effects. It will be possible to operate stable ballast water.

1 is an installation state diagram of a conventional in-line ballast water treatment apparatus

Figure 2 is a schematic diagram of the in-line treatment apparatus of ballast water of the present applicant filed patent application

Figure 3 is a state diagram of the installation of the ballast water in-line treatment apparatus is installed circulation type pipe for suppressing the biofilm production according to the present invention

4 is a cross-sectional view showing a state in which the circulation pipe according to the present invention is connected to penetrate the outflow pipe of the electrolytic apparatus.

5 is a cross-sectional view illustrating a state in which the circulation pipe according to the present invention is connected to the inlet pipe of the pretreatment apparatus.

6 is a schematic diagram showing a process of mixing the inflow water by the circulation pipe according to the present invention.

With reference to the accompanying drawings for the ballast water in-line treatment apparatus installed with a circulation line for biofilm generation suppression according to the present invention will be described only the parts necessary to understand the technical configuration of the present invention, the description of other parts of the present invention Note that it will be omitted so as not to distract the subject matter.

Hereinafter, an inline treatment apparatus of ballast water having a circulation type pipe for suppressing biofilm generation according to the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, the ballast water in-line treatment apparatus including a pre-treatment device 100 and the electrolysis device 200,

The outflow pipe of the electrolysis device 200 includes a pipe for transferring the outflow water to the ballast water storage tank 500; It relates to an in-line treatment device of ballast water is installed, the circulation pipe for suppressing the biofilm generation, characterized in that the branched; the circulation pipe 300 to be transferred to the inlet pipe of the pretreatment device 100.

The pre-treatment device 100 is applied to various techniques such as a filter or a centrifuge in order to reduce the load on the subsequent method in the conventional ballast water in-line treatment device relatively large animal plankton and underwater microorganisms or foreign matter It is a physical processing device for removing the back. The pretreatment apparatus according to the present invention may be applied to the pretreatment apparatus of the Republic of Korea Patent Publication No. 1118055 to which the applicant has been registered patent, in the pretreatment apparatus installed jet flow induced impeller inside the pipeline as shown in FIG. By using the flow rate and pressure of ballast water flowing into the pretreatment device, zooplankton and aquatic microorganisms contained in ballast water can be killed, removed or damaged by impingement with jet flow-induced impeller and physical impact by turbulence formation. do.

In addition, the electrolysis device 200 is an electrolysis device of Korean Patent Publication No. 1118055, to which the applicant has received a patent, and by electrolyzing the ballast water, which is an aqueous solution of sodium chloride (NaCl), sodium hydroxide (NaOH) and chlorine gas. (Cl ₂ ), and these reactions produce a bactericide sodium hypochlorite (NaOCl) to completely kill, sterilize, and remove not only the zooplanktons impacted by the physical pretreatment device 100 but also the remaining aquatic microorganisms. It is a device for

The electric control device 600 is characterized in that the ballast water passing through the electrolysis device 200, that is, the inflow rate of the ballast water, the flow rate, salinity and the type and shape of marine microorganisms according to the region In consideration of this, it is possible to control the power supplied to the electrolysis device 200 through the variable rectifier 400 by calculating the amount of power required to generate sodium hypochlorite (NaOCl) necessary for their sterilization. have. This configuration makes it possible to control the concentration of residual chlorine-based compounds required for the sterilization of microorganisms in the electrolysis device 200, and to prevent excessive generation of residual chlorine-based compounds and unnecessary waste of power. The electrolysis device 200, like the electrolysis device 200 of the Republic of Korea Patent Publication No. 1118055, alternates between the positive electrode plate and the negative electrode plate in the same direction as the flow direction of the fluid flowing into the electrolysis device 200 The structure may be arranged at regular intervals, or it may be installed in various forms according to site conditions and operation conditions.

The treated water flowing out of the electrolysis device 200 is stored in the ballast water tank 500 and neutralized in the neutralization tank 300 to discharge the residual chlorine contained in the treated water in the neutralization tank 300 to the ocean. .

Therefore, the in-line treatment device for ballast water according to the present invention generally drives the pump 10 when the ballast water is introduced from seawater (S), and then generally a pretreatment device (filter, microbial impact and damage device, etc.) 100 ) And the electrolysis device 200 are installed in parallel and kill the microorganisms in the ballast water by the high concentration of strong oxidant produced by electrolysis and transfer it to the ballast water storage tank 500. In addition, the oxidant measuring sensor (TRO sensor, total residual oxidant sensor) 50 for measuring the residual chlorine component to adjust the concentration of the high concentration oxidant in the device is provided and operated. At this time, the present invention is a high concentration oxidizing agent (about 10mg / L Cl ₂ ) having a strong oxidizing power is formed in the electrolysis device for killing the microorganisms in the ballast water, a part of the circulation type that can be transferred to the front end of the pretreatment device By providing the pipe 300, a portion of the high concentration of oxidant produced by the electrolysis device is transferred to the front end of the pretreatment device by a flow rate-controlled circulation pump 60 to inject the biofilm into the pretreatment device and the inside of the pipe. It is characterized by suppressing.

And the circulation pipe as shown in Figure 4, penetrates through the outflow pipe of the electrolysis device, the inlet of the circulation pipe in the outflow pipe is disposed in the reverse direction of the flow direction of the outflow water outflow from the electrolysis device.

In addition, as shown in FIG. 5, the circulation pipe passes through the inflow pipe of the pretreatment device, and the outlet of the circulation pipe is disposed in the forward direction of the flow of inflow water from the pretreatment device in the inflow pipe.

Therefore, the circulation pipe according to the present invention is to transfer the treated water containing the high concentration of the oxidizing agent generated in the electrolysis device 200 to transfer accurately and quickly when conveyed to the front end of the pretreatment device 100, the transfer flow rate Both ends of the circulation pipe 300 to secure the elbow (Elbow) of the structure is arranged to be located in the center inside the existing pipe.

On the other hand, the ballast water treatment device using an electrolysis device according to the present invention is a circulation pipe 300 for transferring the water containing the high concentration oxidant generated in the electrolysis device 200 to the front end of some pre-treatment device (100) Connected to the circulation pipe 300 is installed in the circulation pump (60) capable of adjusting the flow rate to be transported by the mixing formula by adjusting the flow rate, the circulation pump 60 is installed in the front, rear end Valves 61 and 62 are provided to allow repair in case of failure of the circulation pump 60. In addition, the

valves

30 and 40 for adjusting the inflow flow rate are installed at the front and rear ends of any pipes installed by the present invention.

The ballast water treatment apparatus according to the present invention having the technical configuration as described above, as shown in Figure 6, the portion of the effluent flowing out of the electrolysis device to control the biofilm formation in the pre-treatment apparatus and its pipes To determine the concentration of the mixed water at the final confluence point by the oxidant concentration of the inflow water and the circulating water circulating through the circulation pipe, it is circulated as shown in [Table 1] below. The flow rate of the water can be determined.

C = [(Q ₁ × C ₁ ) + (Q ₂ × C ₂ )] / (Q ₁ + Q ₂ )

C: Oxidizing agent concentration of mixed water immediately after mixing point (mg Cl ₂ / L)

Q ₁ : Flow rate of influent C ₁ (㎥ / hr)

Q ₂ : Flow rate of circulating water C ₂ (㎥ / hr)

C ₁ : oxidizer concentration in influent (mg Cl ₂ / L)

C ₂ : concentration of oxidant in circulating water (mg Cl ₂ / L)

Table 1

Influent		Circulating water		Mixed water
Flow rate (Q ₁ ) (㎥ / hr)	TRO concentration (C ₁ ) (mg Cl ₂ / L)	Flow rate (Q ₂ ) (㎥ / hr)	TRO concentration (C ₂ ) (mg Cl ₂ / L)	TRO concentration (C) (mg Cl ₂ / L)
250	0	28	10	One
500	0	56	10	One
1000	0	110	10	One
2000	0	220	10	One

Conventional in-line ballast water treatment apparatus of the conventional ballast water is not completely removed even if they are killed or removed by the physical treatment of the zooplankton or aquatic microorganisms contained in the ballast water introduced into the pretreatment apparatus, it is shown in [Table 1] As described above, since the total residual oxidant (TRO) concentration is zero, small plankton or underwater microorganisms survive in the pretreatment or pipe to form a biofilm, which increases the flow rate and decreases the flow rate. There was a problem that the smooth operation is not possible due to the load on various equipment.

Therefore, in-line treatment apparatus for ballast water according to the present invention introduces a circulating pipe, and as shown in [Table 1], the mixed water obtained by mixing the inflow water containing no oxidant and the circulating water containing oxidant is mixed. By feeding into the pretreatment unit, the flora and fauna plankton and its spores or aquatic microorganisms that have not been physically removed within the pretreatment unit are killed by the total residual oxidant (TRO) in the mixed water, so that the biofilm in the pretreatment unit or pipe This can be prevented from being formed.

As described above, the ballast water in-line treatment apparatus installed in the circulation line for suppressing the biofilm production according to the present invention has been described through the above preferred embodiment, the excellence has been described, but those skilled in the art will claim It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as described.

The present invention provides an inline treatment apparatus for ballast water comprising a pretreatment device and an electrolysis device, wherein the outflow pipe of the electrolysis device includes: a transfer pipe for transferring the outflow water to the ballast water storage tank; An inline treatment device for ballast water having a circulation type pipe for suppressing biofilm generation, characterized in that it is branched to the inlet pipe of the pretreatment device, which is transferred to an inlet pipe.

Here, the circulation pipe is passed through the outflow pipe of the electrolysis device, it is preferable that the inlet of the circulation pipe in the outflow pipe is arranged in the reverse direction of the flow direction of the outflow water flowing out from the electrolysis device.

In addition, the circulation pipe is penetrated through the inlet pipe of the pretreatment device, it is preferable that the outlet of the circulation pipe in the inlet pipe is disposed in the forward direction of the flow direction of the inflow of water from the pretreatment device.

At this time, it is preferable that the circulation pipe is provided with a circulation pump capable of adjusting the flow rate.

In addition, it is preferable that the circulation pipe is provided with valves at the front and rear ends of the pipe in which the circulation pump is installed.

The present invention provides a ballast water treatment device using an electrolysis device to install a portion of a high concentration of strong oxidant generated after electrolysis to the front end of the pre-treatment device by installing a circulation pump and piping that is automatically controlled flow rate is provided with oxidizing power By preventing the formation of biofilms by inhibiting the growth and proliferation of microorganisms in the pretreatment apparatus and the pipes, the stable operation of ballast water by controlling the flow rate, flow rate and load increase by the above effects. It is expected to be widely used in industry in that it can be made possible.

Claims

In the ballast water in-line treatment apparatus including a pretreatment device and an electrolysis device,

The outflow pipe of the electrolysis device includes a transfer pipe for transferring the outflow water to the ballast water storage tank; In-line treatment device for ballast water is installed, the circulation type pipe for suppressing the biofilm generation, characterized in that the branched;
The method of claim 1,

The circulation pipe passes through the outflow pipe of the electrolysis device, and the inlet of the circulation pipe in the outflow pipe is disposed in the reverse direction of the flow direction of the outflow water flowing out of the electrolysis device. Inline treatment device for ballast water with type pipe.
The method of claim 1,

The circulation pipe passes through the inlet pipe of the pretreatment apparatus, and the outlet of the circulation pipe in the inlet pipe is disposed in the forward direction of the flow direction of the inflow of water introduced from the pretreatment apparatus. Installed inline treatment device for ballast water.
The method according to any one of claims 1 to 3,

The circulation pipe is an in-line treatment device for ballast water is installed, the circulation pipe for suppressing the biofilm generation, characterized in that the flow rate adjustable circulation pump is installed.
The method of claim 4, wherein

The circulation pipe is an in-line treatment device for ballast water is installed, the circulation type pipe for suppressing the biofilm generation, characterized in that the valve is installed in the front, rear end of the pipe with the circulation pump is installed.