TW201940222A - Water treatment device - Google Patents

Abstract

According to the present invention, a portion of fresh water in a fresh water tank 1 is used as supply water for a low-pressure boiler or a middle-pressure boiler. The fresh water in the fresh water tank 1 is supplied to an RO device 6 via a pipe 2, a valve 3, a water supply pump 4, and an MF film device 5, which constitute a main line. The water that has passed through the RO device 6 is supplied to an electrical deionization device 11. An auxiliary line 20 is configured to produce pure water by allowing the fresh water from the fresh water tank 1 to pass through an MF film device 25 by means of a pipeline 21, a valve 22, and a water supply pump 24 and by allowing MF filtrate water to pass through an ion exchange resin device 26 to be deionized. When an abnormality occurs in the device, data on a component which has caused the abnormality is transmitted to a management department.

Description

Water treatment device

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

For ships sailing in the ocean, it is important to secure water such as drinking water or domestic water. Therefore, many ships are equipped with a fresh water generator which produces fresh water from seawater by distillation or the like. The fresh water produced by a fresh water generator may be used as a boiler water supply in addition to drinking water etc. (patent document 1).

The boilers in ships are used for the following purposes, for example.
(1) In a turbine boat, a main boiler is provided as a steam generating device for supplying superheated steam to the turbine.
(2) In diesel ships, a large amount of steam is required for the purpose of heating, cooking, hot water supply, and heating of fuel, lubricating oil, and cooling water, and an auxiliary boiler for supplying saturated steam is provided to supplement diesel engines.
(3) In a liquid cargo tank, a boiler for supplying boiler exhaust gas (non-combustible) with an oxygen concentration of ≦ 5% is provided as a boiler for inert gas used to squeeze out a volatile gas in a cargo tank.

Previously, low-pressure and medium-pressure boilers were mainly used as shipboard boilers in any application. At this time, when fresh water is used as the boiler water supply, poor operation of the fresh water due to poor water quality is rare.

Turbine ships need to mainly use boilers to produce steam to run steam turbines, and the number of boilers running has a large effect on fuel consumption. For this reason, in recent years, research is being conducted on a structure in which a high-pressure boiler is used as a boiler, and a plurality of steam turbines are operated using one high-pressure boiler, thereby reducing the number of boilers to operate and improving the fuel consumption rate.

In the case of using a high-pressure boiler as an on-board boiler, the boiler water supply is at a high temperature, so poor water quality (for example, corrosiveness) easily leads to poor operation of the boiler. Since the influence of a boiler malfunctioning is very large, it is ideal to further improve the water quality of the boiler water supply from fresh water, and use the pure water treated with desalination as the boiler water supply.

Regarding a boiler pure water production device, it is known to install an ultrafiltration (UF) membrane device, a reverse osmosis (RO) device, and an electrical membrane ion device in series (Patent Document 2).

[Patent Document 1] Japanese Patent Laid-Open No. 2007-132227
[Patent Document 2] Japanese Patent Laid-Open No. 2003-136065

Under normal circumstances, replacement parts are not stored in the ship. Therefore, even if the pure water production device during the navigation becomes abnormal due to the deterioration, damage, or blockage of the parts, the parts cannot be replaced and the abnormality cannot be eliminated.

An object of the present invention is to provide a water treatment device that can easily obtain an abnormal replacement part.

The water treatment device of the present invention processes the water to be treated to produce treated water, and includes a sending mechanism, and when the water treatment device generates an abnormality, sends a component that causes the abnormality to a management department or a distribution department.

In one aspect of the water treatment device of the present invention, the water treatment device is a pure water production device that processes pure water by at least an RO device or an RO device and an electric deionization device.

In one aspect of the water treatment device of the present invention, the water treatment device has: a main series, at least the RO device or the RO device and the electric deionization device are used to process the treated water to produce pure water; and pure water The preliminary series for manufacturing can pass water in series or parallel to the main series.

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

In one aspect of the water treatment device of the present invention, the abnormality of the water treatment device is that the amount of pure water from the pure water production device is lower than a predetermined amount, or the conductivity of the pure water from the pure water production device is abnormal. Or the total organic carbon (TOC) value exceeds the specified value.

One aspect of the present invention is a water treatment device for ships.
[Effect of the invention]

Ships equipped with the water treatment device of the present invention send parts that are the cause of abnormality to the management department or distribution department even when the performance of the water treatment device is degraded or fails, so the replacement part can be immediately obtained at the next port of call. And replace parts.

In one aspect of the water treatment device of the present invention, the pure water production device includes a preparatory series, so even if the performance of the main series is degraded or the main series fails, the preparatory series is immediately actuated, whereby the pure water with good quality can be continued Made of water.

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 a water supply for a low-pressure boiler or a medium-pressure boiler. The fresh water in the fresh water tank 1 is supplied to the RO (reverse osmosis) device 6 through a pipe 2, a valve 3, a water supply pump 4, and a precision filtration (Membrane Filter (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 of the concentrated water is discharged to the outside of the system through the discharge pipe 8 and the discharge valve 9 branched from the pipe 7.

The permeated water of the RO device 6 is supplied to the electric deionization device 11. As described in Patent Document 2, the electric deionization device 11 includes a cathode and an anode, a plurality of cation exchange membranes and anion exchange membranes arranged between the cathode and the anode, a concentration chamber formed between the membranes, and a desalination unit. A chamber, an ion exchanger filled in the desalination chamber, and a power supply device for applying a voltage between the anode and the cathode. The RO permeate water undergoes deionization treatment while passing through the desalination chamber, and becomes pure water. A part of this pure water is taken out through the piping 12 and the valve 13 and is used as water supply for a high-pressure boiler and the like. The remaining pure water is sent back to the fresh water tank 1 through a pipe 15. The concentrated water of the electric deionization device 11 is returned to the fresh water tank 1 through a pipe 16.

In this pure water manufacturing apparatus, the amount of pure water generated from the electric deionization apparatus 11 is less than a predetermined value, or the pure water from the electric deionization apparatus 11 has poor water quality (specifically, for example, the conductivity or the TOC value is high). In the case of an abnormality such as a predetermined value), the sending mechanism (for example, a satellite communication system) sends a component that is the cause of the abnormality to a server of a management department. This server prepares in advance by sending the replacement part information and the next port information (location, time) to the replacement part supply department (ordering), and the parts can be replaced immediately at the next port.

Another embodiment will be described with reference to FIG. 2.
In this embodiment, a pure water production apparatus shown in FIG. 1 is included as a main series, and a preliminary series 20 is further included.

The preliminary series 20 is configured by passing fresh water from the fresh water tank 1 to the MF membrane device 25 through a pipe 21, a valve 22, a pipe 23, and a water supply pump 24, and passing MF filtered water to the ion exchange resin device. 26 and deionized to produce pure water. The pure water from the preliminary series 20 is returned from the piping 27 to the fresh water tank 1 through the valve 29A, the piping 12, and the piping 15, and the valve 13 is opened during use, and a part is taken out through the valve 13.

Sensors such as a resistivity meter and a conductivity meter are used to measure the water quality (resistivity or conductivity, etc.) of pure water from the electric deionization device 11, and a flow sensor is used to measure the pure water flow rate from the electric deionization device 11. , Input the detection signals of these sensors into the controller (not shown). This controller monitors the water quality and quantity of pure water during the operation period of the above main series 10, and judges when at least one of the water quality and quantity is lower than a set value (poor water quality or low water quantity) for a predetermined period or more. Some abnormalities are generated for the main series 10. As shown in FIG. 3, a satellite communication system or the like is used to notify the management department of the pure water production apparatus of the abnormality, and the pure water production of the preliminary series 20 is started. In addition, notify the management of replacement parts.

When the pre-series 20 is operated, the main series 10 may be stopped and the pre-series 20 may be used to produce the total amount of pure water produced by the pure water manufacturing apparatus (close valve 3, valve 29B, open valve 22, valve 29A, The valve 13 is only opened during use), and both the main series 10 and the preparatory series 20 can be operated, so that the pure water from the main series 10 and the preparative series 20 merge and take out (close the valve 29B, open the valve 3 , Valve 22, valve 29A, valve 13 only open when in use).

In the illustrated FIG. 2, the main series 10 and the preliminary series 20 are provided in parallel, but a series connection pipe 30 shown by a two-point chain line in FIG. 2 may be provided. When the amount of pure water from the electric deionization device 11 is sufficient, but the water quality is poor, the pure water from the electric deionization device 11 is processed by passing water to the preparative series 20 and taken out through the pipes 27 and 12 Pure water with good water quality.

In this way, the preparatory series 20 can be provided in parallel with or in series with the main series 10 so as to allow water to pass therethrough, so that even when a failure occurs in the main series 10, pure water can be stably produced. In addition, since the pure water is stably supplied to the high-pressure boiler, the ship can be sailed to the next port of call.

In the embodiment shown in FIG. 1 and FIG. 2, the piping 21 for supplying fresh water in the fresh water tank 1 to the preliminary series 20 is directly connected to the fresh water tank 1, but the piping 21 may be diverged from the piping 2.

Although the MF membrane device 5 is used in the above embodiment, a UF membrane device may be used. These membrane devices can also be omitted. In FIG. 1 and FIG. 2, the RO device 6 is illustrated with only one segment, but it may be provided with two or more segments.

The ion exchange resin device 26 has the following characteristics: space saving; fast startup; resistance to changes in the quality of raw water; easy or unnecessary maintenance. The ion exchange resin device has a shorter lifespan than an electric deionization device, but as long as it can be desalted in a short period of time before reaching the next port of call, it can be used in the preparation series 20 An ion exchange resin device is used. In particular, in order to achieve space saving by simplifying the device, it is preferable to use a non-regeneration type ion exchange resin device.

The ion exchange resin device may be configured with only one tower or two towers in series. In the case of two towers, various combinations such as cation exchange → anion exchange, anion exchange → cation exchange, anion-cation mixing → anion-cation mixing can be used. In addition, two stages of cation exchange and anion exchange can be performed in one tower by: filling the cation exchange resin and anion exchange resin in a layer state in the tower; or using a horizontal baffle plate in the tower It is divided into an upper chamber and a lower chamber, and a method of piping that drains water from the upper chamber and is introduced into the lower chamber is provided.

When a more stable process is required, it is preferable to perform the membrane filtration process by the MF membrane device 25 or the UF membrane device in the preliminary series as shown in FIG. 2.

By providing the preliminary series 20 with a removal mechanism different from that of the main series 10 as described above, there are also advantages such that failure due to the same reason as the main series can be avoided.

In the situation shown in FIG. 2, during the normal operation of the main series 10, the pre-series 20 may be stopped in the immersion state without being used for desalting. However, in order to suppress the generation of bacteria, water can be collected immediately after switching. It is preferable to use a pipe 28 to circulate water in the standby series 20 and stand by (close the valve 22, the valve 29A, open the valve 3, the valve 29B, and open the valve 13 only when in use). In this case, it is feared that the temperature of the water in the preliminary series will rise (over 50 ° C) or the accumulation of dissolved organic matter from the ion exchange resin. Therefore, it is preferable to periodically discharge the water outside the system to keep the water temperature or water quality within a predetermined range Way to control. In addition, if the return water from the pipe 28 is returned to the fresh water tank 1, the water in which CO ₂ in the atmosphere is dissolved will be taken to load the ion exchange resin, and therefore it is preferably returned to the pipe 23.

In the description, the abnormal amount of pure water production equipment shows the amount of water and conductivity or TOC value of the pure water, but the abnormal phenomenon can also exemplify the excessive increase in pressure loss of the RO device, and the temperature of the pure water. Excessive rise and so on.

In the database of the controller, reference values of the water amount, conductivity, pressure loss, water temperature, TOC concentration, etc. are registered, and abnormalities that cause each measurement value to exceed the reference value are registered. component. When abnormalities occur, send the parts that caused the abnormalities to the management department.

The reference value or a component that causes an abnormality may be registered in a server of a management department. At this time, the data of each measurement item is transmitted to the server of the management department, and the server monitors the pure water production device. When abnormal conditions occur in the pure water manufacturing equipment on the spot, the server sends ordering data to the replacement parts supply department.

In the present invention, it is preferable to automatically calculate a candidate for a replacement part based on a detection result of each sensor for detecting the various items, and send it to a manager terminal. For example, it is possible to automatically calculate a master by associating detection results with candidates for replacement parts in advance.

It is efficient to correlate the position of each time of the sailing ship, the position of parts inventory, the position of the destination port of delivery, and the remaining operational forecast period of the preliminary series, and automatically calculate from which inventory point to which port of delivery. The results are sent to the manager terminal.

The manager performs the order procedure based on these results.

If it is more efficient to ship to the sea than ship to the port of call, sometimes it is also chosen to ship to the sea instead of to the port of call.

FIG. 3 is a flow of notification and ordering in order, but order processing may be performed without notification. For example, it is also possible to automatically determine the required replacement parts, automatically complete the selection from the distribution method to the order procedure, and inform the manager of the order result. At this time, the manager can perform content confirmation, customer approval, etc. as post-processing while preparing for delivery at the inventory point, thereby shortening the response period.

Although the present invention has been described in detail using specific aspects, those skilled in the art will understand that various changes can be made without departing from the intention and scope of the present invention.
This application is based on Japanese Patent Application No. 2018-056365 filed on March 23, 2018, the entire contents of which are incorporated by reference.

1‧‧‧ fresh water tank

2, 7, 12, 15, 16, 21, 23, 27, 28‧‧‧ Piping

3, 13, 22, 29A, 29B‧‧‧ Valve

4, 24‧‧‧ water supply pump

5.25‧‧‧MF membrane device

6‧‧‧RO device

8‧‧‧ discharge piping

9‧‧‧ Drain valve

10‧‧‧Main Series

11‧‧‧Electric deionization device

18‧‧‧ slime control agent adding device

20‧‧‧Preparation Series

26‧‧‧Ion exchange resin device

30‧‧‧Pipe for series connection

FIG. 1 is a configuration diagram of a pure water producing apparatus according to the embodiment.

FIG. 2 is a configuration diagram of a pure water producing apparatus according to another embodiment.

FIG. 3 is a flowchart of the pure water production apparatus of the embodiment.

Claims (6)

A water treatment device for treating treated water to produce treated water, comprising: a sending mechanism that sends a component that becomes a cause of abnormality to a management department or a distribution department when the water treatment device is abnormal. . The water treatment device according to item 1 of the scope of patent application, wherein the water treatment device is a pure water manufacturing device that produces pure water by treating at least the treated water with a reverse osmosis device or a reverse osmosis device and an electric deionization device. Device. The water treatment device according to item 2 of the scope of patent application, wherein the water treatment device contains: a main series, at least the reverse osmosis device or the reverse osmosis device and the electric deionization device are used to process the treated water to produce pure water. Water; and a preliminary series for the production of pure water, which can pass water in series or parallel to the main series. The water treatment device according to item 3 of the patent application scope, wherein the preliminary series has an ion exchange resin device. The water treatment device according to any one of items 2 to 4 in the scope of the patent application, wherein the abnormality of the water treatment device is that the amount of pure water from the pure water manufacturing device is less than a prescribed amount, or The conductivity or the total organic carbon value of the pure water from the pure water production device exceeds a predetermined value. The water treatment device according to any one of claims 1 to 5 of the scope of application for a patent, which is for use on a ship.