JP2019166471A - Water treatment apparatus - Google Patents

Abstract

To provide a water treatment apparatus which enables an exchange component for solving disorder of water treatment to be easily available.SOLUTION: A part of fresh water in a fresh water tank 1 is used as supply water of a low pressure boiler or a middle pressure boiler. The fresh water in the fresh water tank 1 is supplied through a pipe 2, a valve 3, a water supply pump 4 and an MF membrane device 5 constituting a main system 10 to an RO device 6. Permeable water of the RO device 6 is supplied to an electric deionization device 11. A preliminary system 20 passes the fresh water from the fresh water tank 1 to an MF membrane device 25 with a pipe 21, a valve 22 and a water supply pump 24, and passes the MF filtrate water to the ion exchange resin device 26 and deionizes the MF filtrate water to produce pure water. When disorder occurs in the device, component data becoming a disorder cause is transmitted to a management section.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water treatment apparatus, and more particularly to a water treatment apparatus suitable for a pure water production apparatus in a ship.

  In ships that sail in the ocean, it is important to secure water such as drinking water and domestic water. Therefore, a ship is often equipped with a fresh water generator that produces fresh water from seawater by distillation or the like. Moreover, the fresh water manufactured with the fresh water generator may be used as boiler water supply other than drinking water etc. (patent document 1).

Here, the boiler in a ship is used for the following uses, for example.
(1) In the turbine ship, a main boiler is installed as a steam generator for supplying superheated steam to the turbine.
(2) Diesel ships require a large amount of steam for heating, cooking, hot water supply, heating, etc. for fuel, lubricating oil, cooling fresh water, and install an auxiliary boiler that supplies saturated steam to supplement the diesel engine .
(3) In a tanker ship, a boiler for supplying boiler exhaust (non-combustible) with an oxygen concentration ≦ 5% is installed as an inert gas for pushing out the volatile gas in the cargo tank.

Conventionally, low-pressure / medium-pressure boilers are mainly used as inboard boilers in any application. In this case, when fresh water is used as boiler feed water, the case where the quality of fresh water leads to poor operation is difficult to be realized.
Here, in particular, a turbine ship needs to manufacture steam for operating a steam turbine mainly by a boiler, and the influence of the number of operating boilers on fuel efficiency is great. Therefore, in recent years, an approach for reducing fuel consumption by reducing the number of operating boilers by using a high-pressure boiler as a boiler and operating a plurality of steam turbines with one high-pressure boiler has been studied.

  However, when a high-pressure boiler is used as an inboard boiler, since the boiler feed water is hot, poor water quality (for example, corrosiveness) tends to lead to poor operation of the boiler. Because the impact when a boiler becomes inoperable is enormous, it is possible to further improve the quality of boiler feedwater from fresh water, desalinate to produce so-called pure water, and use pure water as boiler feedwater It is considered desirable.

  As a pure water production apparatus for boilers, a device in which a UF membrane device, an RO device, and electric membrane ions are installed in series is known (Patent Document 2).

JP 2007-132227 A Japanese Patent Laid-Open No. 2003-136065

  Normally, no replacement parts are stored in the ship, so even if the pure water production equipment becomes unstable during navigation due to parts deterioration, damage, blockage, etc., the parts cannot be replaced and the malfunction is resolved. Can not.

  An object of this invention is to provide the water treatment apparatus with which the acquisition of the replacement part for eliminating a malfunction is easy.

  The water treatment device of the present invention is a water treatment device that treats water to be treated to obtain treated water. When the water treatment device malfunctions, the component that causes the malfunction is transmitted to the management department or the delivery department. Means are provided.

  The water treatment apparatus according to one embodiment of the present invention is a pure water production apparatus that produces pure water by treating water to be treated with at least an RO apparatus or an RO apparatus and an electrodeionization apparatus.

  The water treatment apparatus according to an aspect of the present invention includes: a main series for producing pure water by treating the water to be treated with at least the RO apparatus or the RO apparatus and an electrodeionization apparatus; and the main series On the other hand, it has a preliminary series for producing pure water capable of passing water in series or in parallel.

  In the water treatment apparatus of one embodiment of the present invention, the preliminary series includes an ion exchange resin apparatus.

  In the water treatment device of one embodiment of the present invention, the malfunction of the water treatment device may be caused by whether the amount of pure water from the pure water production device is less than a specified amount or the electrical conductivity of pure water from the pure water production device. The degree or TOC value exceeds the specified value.

  The water treatment apparatus according to one embodiment of the present invention is for ship use.

  Ships equipped with the water treatment device of the present invention will immediately send replacement parts at the next port of call because parts causing the malfunction will be sent to the management department even when the performance of the water treatment device deteriorates or breaks down. You can get the parts and replace them.

  In the water treatment apparatus of one aspect of the present invention, since the pure water production apparatus includes a preliminary series, when the performance of the main series decreases, or when the primary series breaks down, Production of pure water with good water quality can be continued.

It is a block diagram of the pure water manufacturing apparatus which concerns on embodiment. It is a block diagram of the pure water manufacturing apparatus which concerns on embodiment. It is a flowchart of the pure water manufacturing apparatus which concerns on embodiment.

  FIG. 1 shows a pure water production apparatus as a water treatment apparatus according to an embodiment. Fresh water obtained by distilling seawater is introduced into the fresh water tank 1. A part of the fresh water in the fresh water tank 1 is used as water supply for a low pressure boiler or an intermediate pressure boiler. Fresh water in the fresh water tank 1 is supplied to an RO (reverse osmosis) device 6 through a pipe 2, a valve 3, a feed water pump 4, and an MF membrane device 5 constituting the main series 10. The concentrated water of the RO device 6 is returned to the fresh water tank 1 through the pipe 7, and a part thereof is discharged out of the system through the blow pipe 8 and the blow valve 9 branched from the pipe 7.

  The permeated water of the RO device 6 is supplied to the electrodeionization device 11. As in Patent Document 2, the electrodeionization apparatus 11 includes a cathode and an anode, a plurality of cation exchange membranes and anion exchange membranes arranged between the cathode and anode, and a concentration formed between these membranes. A chamber, a desalting chamber, an ion exchanger filled in the desalting chamber, and a power supply device for applying a voltage between the anode and the cathode. The RO permeated water is deionized while passing through the desalting chamber to become pure water. Part of this pure water is taken out via the pipe 12 and the valve 13 and used as water supply for a high-pressure boiler or the like. The remaining pure water is returned to the fresh water tank 1 via the pipe 15.

  In this pure water production apparatus, the amount of pure water from the electrodeionization apparatus 11 is less than a specified value, or the quality of pure water from the electrodeionization apparatus is poor (specifically, for example, electrical conductivity or TOC). When a malfunction such as a value is higher than a specified value occurs, a component that causes the malfunction is transmitted to a server in the management department by a transmission unit (for example, a satellite communication system). The server transmits (orders) the replacement part information and the next port information (location, time) to the replacement part delivery department, and arranges the parts so that the parts can be immediately replaced at the next port.

  Another embodiment will be described with reference to FIG. In this embodiment, the pure water production apparatus shown in FIG. 1 is provided as a main series, and a spare series 20 is further provided separately from this.

  In the preliminary series 20, fresh water from the fresh water tank 1 is passed through the MF membrane device 25 by the pipe 21, the valve 22, the pipe 23, and the water supply pump 24, and the MF filtered water is passed through the ion exchange resin device 26 for deionization. It is configured to produce pure water by processing. Pure water from the preliminary line 20 is returned from the pipe 27 to the fresh water tank 1 through the valve 29A and the pipes 12 and 15, and when used, the valve 13 is opened and a part is taken out through the valve 13.

  The quality of pure water (such as specific resistance or electrical conductivity) from the electrodeionization device 11 is measured by a sensor such as a resistivity meter or an electric conductivity meter, and the flow rate of pure water from the electrodeionization device 11 is a flow rate. Measurement is performed by sensors, and detection signals from these sensors are input to a controller (not shown). The controller monitors the quality and quantity of pure water during the operation of the main series 10 described above, and at least one of the quality and quantity of water falls below a set value for a predetermined period or longer (poor water quality or water quantity is low). 3), it is determined that some abnormality has occurred in the main series 10, and the management department of the pure water production apparatus is notified of the abnormality using a satellite communication system as shown in FIG. 20 starts pure water production. In addition, the replacement part is notified to the management department.

  When the standby system 20 is operated, the main system 10 may be stopped and the entire pure water produced by the pure water production apparatus may be manufactured by the preliminary system 20 (valves 3 and 29B are closed and valves 22 and 29A are opened). The valve 13 is opened only during use.) Both the main series 10 and the standby series 20 are operated, and the pure water from the main series 10 and the pure water from the backup series 20 may be merged and taken out. (Valve 29B is closed, valves 3, 22, 29A are opened, and valve 13 is opened only when in use.)

  In FIG. 2 described above, the main series 10 and the standby series 20 are installed in parallel, but a series connection pipe 30 indicated by a two-dot chain line in FIG. 2 may be provided. Although the amount of pure water from the electrodeionization apparatus 11 is sufficient, if the water quality is poor, the pure water from the electrodeionization apparatus 11 is passed through the preliminary series 20 for finishing treatment, and good water quality is achieved. The pure water is taken out through the pipes 27 and 12.

  As described above, since the standby series 20 capable of passing water in parallel or in series with the main series 10 is installed, pure water can be stably produced even if a trouble occurs in the main series 10. In addition, since pure water is stably supplied to the high-pressure boiler, the ship can be navigated to the next port of call.

  In the embodiment shown in FIGS. 1 and 2, the pipe 21 for supplying the fresh water in the fresh water tank 1 to the standby system 20 is directly connected to the fresh water tank 1, but the pipe 21 may be branched from the pipe 2. Good.

  In the above embodiment, the MF membrane device 5 is used, but a UF membrane device may be used. Also, these membrane devices may be omitted. 1 and 2, only one stage of the RO device 6 is shown, but it may be installed in two or more stages.

  The ion exchange resin device 26 has features such as space saving; fast start-up; withstands fluctuations in raw water quality; and maintenance work is simple or unnecessary. The ion exchange resin apparatus has a shorter life until breakthrough compared to an electrodeionization apparatus or the like, but it is only necessary to stably demineralize for a short period until the next port of call. Can be used. In particular, in order to save space by simplifying the apparatus, it is preferable to use a non-regenerative ion exchange resin apparatus.

  As an ion exchange resin apparatus, only one tower or two towers may be arranged in series. In the case of two towers, various combinations such as cation exchange → anion exchange, anion exchange → cation exchange, anion / cation mixture → anion / cation mixture can be employed. In addition, the tower is filled with cationic resin and anion resin in a layered state, and the tower is divided into upper and lower chambers by horizontal water shielding plates, and piping is provided for draining from the upper chamber and introducing it into the lower chamber. A two-stage treatment of cation exchange / anion exchange may be performed in one tower such as a system.

  Furthermore, when more stable treatment is required, it is preferable to perform membrane filtration treatment with an MF membrane, UF membrane, or the like in the preliminary series as shown in FIG.

  Thus, by installing the preliminary sequence 20 having a removal mechanism different from that of the main sequence 10, there is also an advantage that troubles caused by the same cause as the main sequence can be avoided.

In the case of FIG. 2, while the main line 10 is operating normally, the preliminary line is basically not used for desalting and may be stopped in the immersed state, but the generation of bacteria is suppressed. It is preferable that water is circulated in the standby system using the pipe 28 so that water can be collected immediately after switching (the valves 22 and 29A are closed, the valves 3 and 29B are opened, the valve 13 is Open only when in use.) However, in this case, there is concern about the rise in water temperature (above 50 ° C.) in the preliminary system and the accumulation of organic substances eluted from the ion exchange resin. It is preferable to control so that. In addition, when the return water from the pipe 28 is returned to the fresh water tank 1, it takes in water in which atmospheric CO ₂ is dissolved, and a load is applied to the ion exchange resin. Therefore, it is preferably returned to the pipe 23.

  In the above description, the amount of pure water and the electrical conductivity or the TOC value are shown as a malfunction of the pure water production apparatus. However, as the malfunction, an excessive increase in the pressure loss of the RO apparatus, the water temperature of the pure water Excessive rise is also exemplified.

  In the database of the controller, reference values such as the amount of water, electrical conductivity, pressure loss, water temperature, TOC concentration and the like are registered, and parts that cause the malfunction phenomenon in which each measured value exceeds the reference value. It is registered. When a malfunction occurs, a part that causes the malfunction is transmitted to the management department.

  Note that the above-described reference value and malfunctioning cause component may be registered in the server of the management department. In this case, the data of each measurement item is transmitted to the server in the management department, and the server monitors the pure water production apparatus. When a malfunction occurs in the pure water production apparatus at the site, order data is transmitted from the server to the replacement parts delivery department.

  In the present invention, it is preferable that necessary replacement part candidates are automatically calculated based on the detection results of the respective sensors for detecting the above items and transmitted to the administrator terminal. For example, automatic calculation is possible by creating in advance a master for associating detection results with replacement part candidates.

  It is efficient to deliver from which stock base to which port by associating the position of the ship to be navigated by time, the position of parts inventory, the location of the destination port of call, and the remaining operation forecast period of the spare series. Is automatically calculated and the result is sent to the administrator terminal.

  Based on these results, the manager performs an ordering procedure.

  If it is more efficient to ship to the sea than to the port, it may be selected to ship to the sea instead of to the port.

  In FIG. 3, the notification and ordering are performed in sequence, but the ordering process can be performed without the notification. For example, it is possible to automatically determine necessary replacement parts, automatically complete the process from the selection of the delivery method to the ordering procedure, and notify the manager of the ordering result. At this time, the management period can be shortened by performing post-processing such as content confirmation and customer approval in parallel with preparation for delivery at the inventory base.

DESCRIPTION OF SYMBOLS 1 Fresh water tank 6 RO apparatus 10 Main series 11 Electrodeionization apparatus 18 Slime control agent addition apparatus 20 Preliminary series 26 Ion exchange resin apparatus

Claims (6)

  A water treatment apparatus for treating treated water to obtain treated water, comprising: a transmission means for transmitting a part that causes a malfunction to the management department or the delivery department when the malfunction occurs in the water treatment apparatus. Water treatment equipment.   The water treatment apparatus according to claim 1, wherein the water treatment apparatus is a pure water production apparatus that produces pure water by treating water to be treated with at least an RO apparatus or an RO apparatus and an electrodeionization apparatus.   The water treatment device includes a main series for producing pure water by treating the water to be treated with at least the RO device or the RO device and an electrodeionization device, and pure water that can be passed in series or parallel to the main series. The water treatment apparatus according to claim 2, further comprising a preliminary series for water production.   The water treatment device according to claim 2 or 3, wherein the preliminary series includes an ion exchange resin device.   The malfunction of the water treatment device is that the amount of pure water from the pure water production device is less than the prescribed amount, or the electrical conductivity or TOC value of pure water from the pure water production device is above the prescribed value. The water treatment apparatus according to any one of claims 2 to 4.   The water treatment apparatus according to claim 1, wherein the water treatment apparatus is for ship use.

Images