JP2022097630A - Disassemblable portable membrane filtration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disassemblable portable membrane filtration apparatus that is compact enough to satisfy required water purification capacity and can be disassembled into transportable individual units, and disassembled units of the apparatus can be readily assembled, and its piping can be readily adjusted at the installation site.

SOLUTION: A disassemblable portable membrane filtration apparatus 11, comprising an upper unit 12 and a lower unit 13 provided with a piping unit 18 and a piping unit 19, respectively, wherein the upper and lower units 12 and 13 can be joined to constitute a frame body 16, a membrane module 14 is provided detachably in the frame 16, and either the upper unit 12 or the lower unit 13 is provided with both of a clean water line 25 and a drainage water line 28 in an aggregated manner.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a disassembled portable membrane filtration device that can be disassembled and transported and can be easily assembled.

The water services penetration rate in Japan reached 97.5% in 2011, and the water services for all people are almost realized. On the other hand, the population of Japan peaked in 2010 and began to decline, and in many of the depopulated areas that occupy about half of the area of municipalities nationwide in line with this population decline, marginal settlements are progressing due to the declining birthrate and aging population. I'm out.

As a general rule, water services need to cover the operating costs of the business with water charges. Efficiency is getting worse. It is indispensable to secure sanitary drinking water and domestic water even in small-scale settlements, but since such small-scale settlements are scattered in steep mountains and far from water purification facilities, existing facilities It is becoming economically difficult to maintain existing facilities, let alone renewal due to aging.

In addition, the amount of water required per day in these small-scale settlements is as small as 10 (m ³ / day) or less, and a new water supply method different from the conventional water supply method is required.

As one of the new water supply methods, a stationary water purification device for a small amount of water has been proposed. As such a water purification device, Patent Document 1 proposes a water purification device using a membrane module. Has been done.

As shown in the drawings of Patent Document 1 (FIGS. 14 to 19), the water purification apparatus of Patent Document 1 is contained in a rectangular frame having a width of 1400 (mm) × a depth of 1000 (mm) × a height of 1985 (mm). Purified with a raw water supply means for supplying raw water, a membrane module for purifying the supplied raw water, a chemical tank for storing sodium hypochlorite (hereinafter referred to as hypochlorite) for disinfection, and a membrane module. The device is operated by controlling the operation of the pump that sends the chemical liquid from the chemical liquid tank to the water, the pipeline that connects the respective components, the electric valve provided in the pipeline, the raw water supply means, the pump, and the electric valve. The control means and the like are collected and unitized, and casters are provided at the bottom of the frame.

As a result, this water purification device can unitize the components required for the water purification device and transport them integrally, and when installed at the required location, it supplies purified water with a water supply capacity of 5 to 8 (m ³ / hr). be able to.

Japanese Unexamined Patent Publication No. 2014-57926

However, as mentioned above, small-scale settlements with advanced marginal settlements are scattered in steep mountains, so road conditions are poor. Especially in the vicinity of the water intake source where water purification equipment is installed, even light vehicles are used. However, there are no accessible roads, and in most cases it is necessary to approach narrow mountain roads on foot.

Therefore, when the water purification device of Patent Document 1 is to be installed near such a water intake source, the water purification device is transported by a small truck or the like to a point where a vehicle can enter, and thereafter, a cableway or the like is temporarily installed and carried in. Alternatively, it is necessary to disassemble the components into a weight that can be transported by human power and manually carry in a narrow mountain road.

If a cableway or the like is temporarily installed and carried in, not only the installation construction period will be lengthened due to the temporary installation of the cableway or the like, but also the installation cost will increase significantly. In addition, even if the components are disassembled to a weight that can be transported manually and carried in, the installation site near the water intake source is generally narrow and workability is poor. Adjustment is a very difficult task.

Furthermore, if the water purification capacity of the water purification equipment greatly exceeds the water purification capacity of 10 (m ³ / day), which is originally required for small-scale settlements, the equipment will become larger and more difficult to carry in and install. By increasing the size and reducing the flow rate, the operating cost of the equipment will increase.

The present invention has been made based on the above circumstances, and an object thereof is that the invention is compact enough to satisfy the required water purification capacity and can be disassembled for each transportable unit. Another object of the present invention is to provide a disassembled portable membrane filtration device capable of easily assembling disassembled units and adjusting the positions of pipes and the like at an installation site.

In order to achieve the above object, the invention according to claim 1 provides a piping unit for each of the upper and lower units, joins the upper and lower units to form a frame, and a membrane module detachably provided on the frame. It is a disassembled portable membrane filtration device characterized in that the water purification line and the drainage line are centrally arranged on either side of the upper and lower units.

In the invention according to claim 2, the hypo-injection device is provided on the lower unit side, the piping unit to which the water purification line is connected and the hypo-injection device are connected by the hypo-injection line, and the upper and lower units are joined to form a frame. When configured, it is a disassembled portable membrane filtration device in which only the hypo-line of the upper and lower units is joined.

The invention according to claim 3 is a disassembly portable membrane filtration device in which a piping unit connected to a raw water line is provided in a lower unit, and this piping unit is connected to a connection portion of a membrane module.

According to the invention according to claim 1, a piping unit is provided in each of the upper and lower units, the upper and lower units are joined to form a frame body, and a water purification line and a drainage line are provided in a membrane module detachably provided on the frame body. Since it is centrally arranged on either side of the upper and lower units, when joining the upper and lower units to form a frame, there is no need for troublesome connection work and position adjustment for the main lines, and the membrane filtration device Assembling work becomes easy.

According to the invention of claim 2, the hypo-injection device is provided on the lower unit side, the piping unit to which the water purification line is connected and the hypo-injection device are connected by the hypo-injection line, and the upper and lower units are joined to form a frame. Since only the hypo-line of the upper and lower units is joined when configuring, it is possible to configure the membrane filtration device by minimizing the connection points of the line between the upper and lower units, assembling the device at the installation site, piping, etc. The position adjustment of is extremely easy.

In addition, the hypo-injection device can supply safe purified water to the outside by injecting hypo-injection into the filtered water filtered by the membrane module while passing through the piping unit, and the backwash tank. Hypoin is injected into the backwash filter water stored in the backwash water, and the organic substances adhering to the filter membrane surface and the inside of the filter membrane pores are effectively decomposed and removed by the oxidizing power of the residual chlorine contained in the backwash water. The filtration capacity of the filtration membrane can be restored.

According to the invention of claim 3, since the lower unit is provided with a piping unit connected to the raw water line, the raw water is supplied from the lower end of the membrane module vertically placed via the connection portion for joining the membrane module of this piping unit. It can be supplied inside and filtered.

In addition, since the raw water is supplied from the lower end of the vertically placed membrane module, air is supplied from the lower end of the membrane module to perform air scrubbing cleaning when the filtration membrane stored in the membrane module is backwashed, effectively filtering. The suspension can be stripped and washed from the membrane surface to restore filtration capacity.

It is a schematic diagram explaining one Embodiment of the decomposition portable membrane filtration apparatus in this invention. It is a schematic diagram explaining the water supply process of the disassembly portable membrane filtration apparatus of FIG. It is a schematic diagram explaining the backwash water storage process of the disassembly portable membrane filtration apparatus of FIG. It is a schematic diagram explaining the backwash process of the disassembly portable membrane filtration apparatus of FIG. It is a figure which shows the basic configuration example of the upper unit and the lower unit of the disassembled portable membrane filtration apparatus of FIG. It is a figure which shows the positional relationship of the membrane module joint part when the upper unit of the disassembled portable membrane filtration apparatus of FIG. 1 is placed and fixed on the lower unit. It is a drawing explaining the structure of the mounting example of the disassembly portable membrane filtration apparatus of FIG. It is a front view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a right side view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a left side view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a back view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a schematic diagram explaining another embodiment of the decomposition portable membrane filtration apparatus in this invention. It is a drawing explaining the structure of the mounting example of the disassembly portable membrane filtration apparatus of FIG. It is a front view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a right side view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a left side view of the mounting example of the disassembled portable membrane filtration apparatus of FIG. It is a back view of the mounting example of the disassembled portable membrane filtration apparatus of FIG.

Hereinafter, the method for disassembling, transporting, and assembling the disassembling and portable membrane filtering device and the membrane filtering device in the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of an embodiment of the disassembled portable membrane filtration device of the present invention. According to FIG. 1, the disassembly portable membrane filtration device 11 is roughly classified into an upper unit 12, a lower unit 13, a membrane module 14, and a control panel 15.

The upper unit 12 and the lower unit 13 are frame units, and the upper unit 12 is placed and fixed on the upper part of the lower unit 13 to form the frame body 16. In this embodiment, the frame body 16 (upper unit 12, lower unit 13) is manufactured by joining an L-shaped material of stainless steel (SUS) in consideration of strength, rigidity, corrosion resistance, etc. The material of the body is not limited to this, and for example, it may be manufactured by joining a reinforcing mold material to a stainless steel plate material.

Further, as shown in FIG. 1, horizontal piping units 18 and 19 are arranged at the top of the upper unit 12 and the bottom of the lower unit 13, respectively, for joining membrane modules connected to the horizontal piping units 18 and 19. The connecting portions 20 and 21 are arranged so as to face each other with the space portion 22 for arranging the membrane modules facing each other.

The horizontal piping unit 18 is a pipeline arranged in the horizontal direction at the upper part of the upper unit 12, and is connected to a purified water outlet (not shown) of the membrane module 14 via a connecting portion 20 to take out purified water from the membrane module 14. , Backwash water is supplied to the membrane module 14.

The horizontal piping unit 19 is a pipeline arranged horizontally at the bottom of the lower unit 13, and is connected to a raw water inlet (not shown) of the membrane module 14 via a connecting portion 21 to supply raw water to the membrane module 14.

The connection portions 20 and 21 are portions where the purified water outlet and the raw water inlet (not shown) of the membrane module 14 can be detachably connected to each other, and the membrane module 14 is replaced when the membrane module 14 is replaced or when the membrane module 11 is transported. Can be removed.

In the upper unit 12, in addition to the above-mentioned horizontal piping unit 18 and the joint portion 20 connected to the horizontal piping unit 18, the backwash tank 24, the water purification line 25 connected to the horizontal piping unit 18, and the backwash tank inflow. A hypotherous line 30a for injecting hypothermia into the horizontal piping unit 18 is arranged via a line 26, a backwash line 27, a drainage line 28 connected to the membrane module 14, and a hypotherous injection unit 29. That is, in the disassembly portable membrane filtration device 11, the water purification line 25 connected to the horizontal piping unit 18 and the drainage line 28 connected to the membrane module 14 are collectively arranged in the upper unit 12.

The backwash tank 24 is a tank for storing backwash water for backwashing and washing the filtered membrane stored in the membrane module 14, and stores the purified water filtered by the membrane module 14 as backwash water. In this embodiment, a polyethylene cylindrical tank having a capacity of 20 (L) is used as the backwash tank 24.

The water purification line 25 is a pipeline for supplying water to the outside of the decomposition portable membrane filtration device 11 after being filtered by the membrane module 14, and connects between the horizontal piping unit 18 and the water purification supply port 32. An electric valve 33 for controlling the flow of purified water is provided in the middle of the road.

The backwash tank inflow line 26 is a pipeline for sending the purified water filtered by the membrane module 14 to the backwash tank 24, and connects between the horizontal piping unit 18 and the backwash tank 24 to connect the backwash tank 24. An electric valve 34 for controlling the flow of purified water is provided on the way.

The backwash line 27 is a pipeline for supplying backwash water from the backwash tank 24 to the membrane module 14, connects between the backwash tank 24 and the horizontal piping unit 18, and reverses in the middle of the pipeline. A wash pump 35, a check valve 36 that allows the passage of backwash water only from the backwash tank 24 side to the horizontal piping unit 18 side, and an electric valve 37 that controls the flow of backwash water are provided. In this embodiment, a land-based pump having an output of 0.4 (kW) is used for the backwash pump 35.

The drainage line 28 is a pipeline for draining the drainage that has been backwashed and washed from the filter membrane stored in the membrane module 14 to the outside of the membrane filtration device, and has a drainage outlet 40 and a drainage outlet 41 of the membrane module 14. An electric valve 42 is provided in the middle of the pipeline to control the flow of drainage.

The hypo-line 30a is connected to the horizontal piping unit 18 via the hypo-injection unit 29, and the disinfecting hypo-disinfection supplied from the hypo-injection device 47, which will be described later, is used to purify the water flowing in the horizontal piping unit 18. It is a pipeline for supplying. The hypo-line 30a in front of the hypo-injection section 29 is provided with a check valve 44 that allows only the passage of the hypo-sub to the hypo-injection section 29 side. The hypo-line 30a is joined to the hypo-line 30b, which will be described later, by a union joint 43 to form the hypo-line 30.

In the lower unit 13, in addition to the joint portion 21 connected to the horizontal piping unit 19 and the horizontal piping unit 19, the hypoinjection device 47, the compressor 48, the raw water line 49 connected to the horizontal piping unit 19, and the air supply line 50 are arranged.

The hypo-injection device 47 is a device for injecting hypo-sterilization into the purified water flowing in the horizontal piping unit 18 in the upper unit 12 via the hypo-injection unit 29, and is a hypo-injection pump 51 and a hypo-tank. Has 52. A hypo-line 30b is attached to the hypo-injection device 47, and the hypo-line 30b is joined to the hypo-line 30a in the upper unit 12 by a union joint 43 to form the hypo-line 30. Hypo-submersible are supplied from the injection device 47 to the hypo-injection unit 29.

In this embodiment, a φ4 × 20 (W) diaphragm type metering pump is used as the hypoinjection pump 51, and a polyethylene square tank having a capacity of 5 (L) is used as the hypotanic tank 52.

When the filter membrane stored in the membrane module 14 is backwashed with backwash water, the compressor 48 supplies air for air scrubbing cleaning to the membrane module 14 at the same time. In this embodiment, an oil-free reciprocating compressor with an output of 0.088 (kW) is used as the compressor 48.

The raw water line 49 is a pipeline that supplies the raw water to be filtered to the membrane module 14, connects between the raw water intake inlet 53 and the horizontal piping unit 19, and removes dust contained in the raw water in the middle of the pipeline. The strainer 54 and the check valve 55 that allow only the passage of raw water to the membrane module 14 are provided. In this embodiment, a disc type strainer having an opening size of 200 (μm) is used as the strainer 54.

As described above, since the raw water line 49 is arranged in the lower unit 13 and the raw water is supplied from the lower end of the membrane module 14 vertically placed via the horizontal piping unit 19, the raw water line 49 is housed in the membrane module 14. When backwashing and cleaning the filtration membrane, air can be supplied from the lower end of the membrane module 14 to perform air scrubbing cleaning.

In this example, the horizontal piping unit 18 in the upper unit 12, the water purification line 25, the backwash tank inflow line 26, the backwash line 27, the drainage line 28, and the horizontal piping unit 19 in the lower unit 13 described above. A HIVP pipe (impact resistant hard polyvinyl chloride pipe) having an inner diameter of 16 A is used for the raw water line 49.

The membrane module 14 contains a filtration membrane made of an MF (microfiltration) membrane or a UF (ultrafiltration) membrane inside, and solid-liquid separation is performed by a dead-end method to general bacteria and pathogens contained in raw water. Filter off suspended substances (SS) and the like. In this embodiment, considering that the target amount of purified water of the decomposition portable membrane filtration device 11 is about 10 (m ³ / day), PVDF (polyvinylidene fluoride) having a membrane area of 7 (m ² ) is used as the membrane module 14. A small membrane module containing a UF membrane (ultrafiltration membrane) made by Vinylidene fluoride is used.

The membrane module 14 is detachably connected to the connection portion 20 connected to the horizontal piping unit 18 in the upper unit 12 and the connection portion 21 connected to the horizontal piping unit 19 in the lower unit 13, and the purified water outlet (not shown) is on the upper side. Similarly, the raw water inlet (not shown) is placed vertically in a vertically placed state, and is arranged in the disassembly portable membrane filtration device 11 by passing vertically between the upper unit 12 and the lower unit 13.

The control panel 15 is a device for automatically operating the disassembly portable membrane filtration device 11, and the backwash of the membrane module 14 is performed at preset time intervals by sequence control using a PLC (Programmable Logic Controller). Cleaning and air scrubbing cleaning are performed to restore the filtration processing capacity of the membrane filtration device. In this membrane filtration device, since the filtration process is performed by the dead-end filtration method (total amount filtration), the material to be filtered is deposited on the surface of the filtration membrane stored in the membrane module 14, so that the material to be filtered is periodically stored in the membrane module 14. It is indispensable to perform backwash cleaning and air scrubbing cleaning of the filtered membrane to remove the accumulated material to be filtered and restore the filtering ability of the filtered membrane.

Therefore, the control panel 15 starts and stops the backwash pump 35, the hypoinjection pump 51, and the intake pump 57 based on the control sequence and the signal from the water level gauge (not shown) installed inside the backwash tank 24. In addition to controlling, the opening and closing of the electric valves 33, 34, 37, 42 is controlled according to these controls.

Further, in the decomposition portable membrane filtration device 11, the intake line 56 is connected to the raw water intake port 53, and the intake pump 57 attached to the tip of the raw water intake line 56 is taken into the water source 58 to take in the raw water. ..

As described above, in the disassembled portable membrane filtration device 11 of the present embodiment, the hypophyllic line 30 is the only line that vertically passes between the upper unit 12 and the lower unit 13, and the other main lines are the upper lines. It is integrated in the unit 12 or the lower unit 13. Therefore, when the upper unit 12 is placed and fixed on the lower unit 13, the only line that needs to be connected is the hypozygous line 30, and it is not necessary to perform troublesome connection work and position adjustment for the other main lines. ..

In addition to this, the hypo-line 30a in the upper unit 12 and the hypo-line 30b in the lower unit 13 are connected by the union joint 43, so that they are provided at the lower end of the upper socket (upper unit side hypo-line 30a). The lower socket (the socket having the union threaded portion provided at the upper end of the lower unit side hypo-line 30b) is in a state of facing each other, as in the separable portable filtration device of the present invention. In addition, even if a separated frame is used, positioning in the pipe connection is easy, and the connection and separation of the upper socket and the lower socket can be easily performed by simply turning the union nut that straddles both.

Subsequently, the operation method and the effect of the disassembly portable membrane filtration device 11 will be described. The operation process of the disassembly portable membrane filtration device 11 includes a water supply process, a backwash water storage step, and a backwash step. Hereinafter, each process will be described with reference to the drawings. In the figure, the pipelines shown by solid lines indicate that raw water, filtered water, etc. are flowing, and the pipelines shown by broken lines indicate that raw water, filtered water, etc. are not flowing. show. Further, the electric valve represented by white indicates that the electric valve is in the open state, and the electric valve represented by black indicates that the electric valve is in the closed state.

FIG. 2 shows a water supply process of the disassembled portable membrane filtration device 11. The water supply step is a step of filtering the raw water taken from the water intake source 58 and supplying it to the outside of the membrane filtration device as clean and safe water purification. The raw water taken from the water intake source 58 by the water intake pump 57 is pressurized and supplied into the membrane filtration device via the water intake line 56, and the dust contained in the raw water is removed by the strainer 54 provided in the raw water line 49. After that, it is supplied to the membrane module 14 via the horizontal piping unit 19.

In this water supply step, the electric valve 33 provided in the water purification line 25 is opened, and the electric valve 34 provided in the backwash tank inflow line 26, the electric valve 37 provided in the backwash line 27, and the drainage line 28 are provided. The electric valve 42 is closed. Further, the hypo-injection pump 51 of the hypo-injection device 47 operates to supply the hypo-injection unit 29, but the backwash pump 35 and the compressor 48 are stopped.

The filtered water, which has been filtered by the membrane module 14 to remove general bacteria, pathogens, suspended solids (SS) and the like contained in the raw water, is filtered by the hypo-injection unit 29 while passing through the horizontal piping unit 18. It is injected, supplied to the outside of the membrane filtration device via the water purification line 25 as safe water purification, and stored in a distribution reservoir or a water tank (not shown). The operation of the disassembled portable membrane filtration device 11 in this water supply process is controlled by the control panel 15 based on the signal from the water level gauge provided in the distribution reservoir or the water tank, and the water level gauge provided in the distribution reservoir or the water tank fills the water. When it is detected, the operation of the intake pump 57 is stopped, and when the water level drops to a certain level, the operation of the intake pump 57 is restarted.

In the separation / decomposition portable membrane filtration device 11, since the membrane module 14 performs the filtration treatment of raw water by the dead-end filtration method, the filtration membrane stored in the membrane module 14 is reversed every time the water supply process elapses for a certain period of time. It is necessary to wash and wash, and the execution of this backwash wash is controlled by the control panel 15. In this embodiment, the backwashing wash and the air scrubbing wash are controlled to be performed once every 30 minutes of operation of the membrane filtration device. Therefore, after a lapse of a predetermined time, in preparation for backwashing, the backwash tank 24 is filtered by the membrane module 14, and then the purified water in which hypotherm is injected from the hypoinjection unit 29 is backwashed as backwash water. The process shifts to the backwash water storage step of storing in the tank 24.

In the backwash water storage step, as shown in FIG. 3, the electric valve 34 provided in the backwash tank inflow line 26 is opened, and the electric valve 33 provided in the water purification line 25 and the backwash line 27 are provided. The electric valve 42 provided in the electric valve 37 and the drain line 28 is closed. Further, the hypo-injection pump 51 of the hypo-injection device 47 is operated to supply the hypo-injection unit 29, but the backwash pump 35 and the compressor 48 are stopped.

As a result, the purified water that has been filtered by the membrane module 14 and then injected with hypo-injection by the hypo-injection unit 29 flows into the back-wash tank 24 via the back-wash tank inflow line 26 and is stored as back-wash water. .. This backwash water storage is performed until a water level gauge (not shown) arranged in the backwash tank 24 detects a full state.

When the water level gauge provided in the backwash tank 24 detects that the backwash tank 24 is full, the backwash water storage process is completed, and immediately, 1 from the secondary side of the filtration membrane housed in the membrane module 14. Backwashing water is passed to the next side, and the process proceeds to a backwashing step of removing contaminants adhering to the surface of the filter membrane and the pores of the membrane.

In the backwash step, as shown in FIG. 4, the operation of the intake pump 57 and the hypoinjection pump 51 of the hypoinjection device 47 is stopped, and the electric valve 37 provided in the backwash line 27 and the drainage line 28 are provided. The electric valve 42 is opened, and the electric valve 34 provided in the backwash tank inflow line 26 and the electric valve 33 provided in the water purification line 25 are closed.

After that, the backwash pump 35 was operated to open the electric valve 37 to pressurize the backwash water flowing down from the backwash tank 24, and the membrane module 14 via the backwash line 27 and the horizontal piping unit 18. Backwash and wash the filter membrane supplied and stored from the secondary side. At the same time, the compressor 48 is operated, air is supplied from the primary side of the membrane module 14 via the air supply line 50, and air scrubbing cleaning of the stored filter membrane is performed. As described above, since the backwashing and air scrubbing cleaning of the filter membrane by the backwashing water is performed, the contaminants adhering to the filter surface and the filter pores can be effectively removed.

As described above, since the hypochlorite is injected into the filtered water stored in the backwash tank 24 in the backwash water storage step, the backwash water used in the backwash step contains a predetermined concentration of hypophylla. Unlike the case of backwashing with clean water, the oxidizing power of residual chlorine contained in the backwashing water causes fuminic substances and proteins derived from microorganisms adhering to the surface of the filter membrane and the pores of the filter membrane. It can effectively decompose and remove organic substances and restore the filtration capacity of the filtration membrane. Further, by storing the backwash water containing hypophylla in the backwash tank 24, the growth of mold and algae in the backwash tank 24 can be effectively suppressed.

The drainage after the backwashing and cleaning of the inside of the membrane module 14 and the air after the air scrubbing cleaning are drained to the outside of the membrane filtration device via the drainage line 28. This backwashing step is continued until the water level gauge provided in the backwashing tank 24 detects that the water level of the backwashing water stored in the backwashing tank 24 has reached the bottom of the tank.

The time when the backwashing process is completed is when the water level gauge provided in the backwashing tank 24 detects that the water surface of the backwashing water stored in the backwashing tank 24 has reached the bottom, as described above. Alternatively, the backwashing may be performed after a predetermined time has passed.

Immediately after the backwashing process is completed, the water supply process may be started, but the differential pressure between the primary side and the secondary side of the membrane module 14 measured by a pressure gauge (not shown) performs the backwashing process. If the pressure exceeds the reference value, the backwash water storage step and the backwash step may be repeated a plurality of times until the differential pressure falls within the reference value.

In the operation of the disassembly portable membrane filtration device 11, a backwash water storage step is provided immediately before the backwash step, and after the storage in the backwash tank 24 is completed, the backwash step is immediately shifted to the backwash tank 24. The time for the backwash water to be stored in the backwash tank is minimized, and the occurrence of dew condensation on the side surface and the bottom surface of the backwash tank 24 is suppressed.

By repeating each of the above steps under the control of the control panel 15, the decomposition portable membrane filtration device 11 can automatically continue to supply purified water.

FIG. 5 shows a basic configuration example of the upper unit 12 and the lower unit 13 of the disassembly portable membrane filtration device 11. As shown in FIG. 5, a horizontal piping unit 18 is arranged above the upper unit 12, and a connecting portion 20 for joining the membrane module is connected downward to the horizontal piping unit 18. Further, a horizontal piping unit 19 is arranged at the bottom of the lower unit 13, and a connecting portion 21 for joining the membrane module is connected upward to the horizontal piping unit 19. The connecting portions 20 and 21 for joining the membrane modules are arranged in the upper unit 12 and the lower unit 13, respectively, so as to oppose each other with the space portion 22 for arranging the membrane modules facing each other.

Therefore, when the upper unit 12 is placed on the lower unit 13, as shown in FIG. 6, the positional relationship between the connecting portions 20 and 21 for joining the membrane modules is such that the membrane module 14 can be mounted vertically. Since no adjustment work or the like is required other than the work of mounting the upper unit 12 on the lower unit 13, the burden of the installation work of the membrane filtration device at the installation site can be significantly reduced.

Next, a mounting example of the disassembly portable membrane filtration device 11 configured as described above will be described. As shown in FIG. 7, the disassembly portable membrane filtration device 11 is composed of an upper unit 12, a lower unit 13, a membrane module 14, and a control panel 15, which are assembled and used at the installation site. 8 shows a front view of the disassembled portable membrane filtration device 11 in an assembled state, FIG. 9 shows a right side view, FIG. 10 shows a left side view, and FIG. 11 shows a rear view. As can be seen from the figure, since the upper unit 12 is placed and fixed on the lower unit 13 and the membrane module 14 is vertically arranged in the frame body 16, the installation space of the disassembleable portable membrane filtration device 11 is the lower unit. The bottom surface of the 13 becomes a space, and the installation space can be minimized to configure the membrane filtration device. As the fixing means for mounting and fixing the upper unit 12 on the lower unit 13, any fixing means such as bolting the upper unit 12 and the lower unit 13 can be used.

When the disassembly portable membrane filtration device 11 is disassembled and transported, it is disassembled into at least the structural units shown in FIG. 7, but if necessary, the components arranged in the upper unit 12 and the lower unit 13, for example, the reverse The washing tank 24, the backwash pump 35, the hypoinjection device 47, the compressor 48 and the like may be removed. Disassembling the upper unit 12 and the lower unit 13 can be easily performed by removing the fixing means between the upper unit 12 and the lower unit 13 and loosening the union joint 43 to separate the hypozygous line 30a and the hypozygous line 30b. Can be done.

Next, the decomposition portable membrane filtration device 61, which is another embodiment of the present invention, will be described. In the description, the same reference numerals are given to the parts common to the above-mentioned disassembled portable membrane filtration device 11, and the description thereof will be omitted, and only the parts having different configurations will be described.

As shown in FIG. 12, the decomposition portable membrane filtration device 61 includes an upper unit 62, a lower unit 63, a membrane module 14, and a control panel 15 in the same manner as the above-mentioned decomposition portable membrane filtration device 11.

The upper unit 62 and the lower unit 63 are frame units, and the upper unit 62 is placed and fixed on the upper part of the lower unit 63 to form the frame body 64. Also in this embodiment, the frame body 64 (upper unit 62, lower unit 63) is manufactured by joining L-shaped materials of stainless steel (SUS), but the material of the frame body is not limited to this. ..

The difference between the decomposition portable membrane filtration device 61 and the above-mentioned decomposition portable membrane filtration device 11 is that in the decomposition portable membrane filtration device 11, the water purification line 25 and the drainage line 28 are centrally arranged in the upper unit 13. On the other hand, in the disassembly portable membrane filtration device 61, the water purification line 25 and the drainage line 28 are centrally arranged in the lower unit 63.

Therefore, in the upper unit 62, in addition to the joint portion 20 connected to the horizontal piping unit 18 and the horizontal piping unit 18, the backwash tank 24, the water purification line 25a connected to the horizontal piping unit 18, and the backwash tank inflow line 26, a backwash line 27a and a backwash line 27c, a drainage line 28a connected to the membrane module 14, and a hypothery line 30a for injecting hypotherm into the horizontal piping unit 18 via a hypothermoid injection unit 29 are arranged. .. In addition to these, the compressor 48 and the air supply line 50a are arranged in the upper unit 62.

Further, in the lower unit 63, a check line 27b provided with a check pump 35, a check valve 36 and an electric valve 37, a water purification line 25b, a drainage line 28b, and an air supply line 50b provided with a check valve 57 are arranged. Has been done. In addition to these, the raw water line 49 is provided with an intake pump 65 that is arranged outside the membrane filtration device in the decomposition portable membrane filtration device 11.

As shown in FIG. 12, the water purification line 25, the backwash line 27, the drainage line 28, the hypozygous line 30, and the air supply line 50 of the disassembly portable membrane filtration device 61 are located between the upper unit 62 and the lower unit 63. It is separated. Therefore, when assembling the disassembled portable membrane filtration device 61, it is necessary to mount and fix the upper unit 62 on the lower unit 63 and then connect these separated lines.

That is, the water purification line 25a and the water purification line 25b are joined by the union joint 67 to form the water purification line 25, the backwash line 27a and the backwash line 27b are joined by the union joint 68, and the backwash line 27b and the backwash line 27c are unioned. The backwash line 27 is joined by the joint 69, the drainage line 28a and the drainage line 28b are joined by the union joint 70, the drainage line 28 is joined, and the hypozygous line 30a and the hypozygous line 30b are joined by the union joint 43. The sub-line 30 is joined to the air supply line 50a and the air supply line 50b by a union joint 71 to form the air supply line 50.

In this way, since the union joint is used to connect the lines, as described above, the upper socket and the lower socket face each other, which not only facilitates positioning in each pipe connection, but also improves the upper side. The connection and separation of the socket and the lower socket can be easily done by simply turning the union nut that straddles both. The line connecting means is not limited to the union joint, and any other means may be used.

Further, as is clear from FIG. 12, since the overall configuration of the disassembly portable membrane filtration device 61 is the same as the overall configuration of the decomposition portable membrane filtration device 11, the operation of the decomposition portable membrane filtration device 61 is performed. The explanation of the method and the effect is omitted.

Next, a mounting example of the disassembly portable membrane filtration device 61 configured as described above will be described. As shown in FIG. 13, the disassembly portable membrane filtration device 61 is composed of an upper unit 62, a lower unit 63, a membrane module 14, and a control panel 15, which are assembled and used at the installation site. 14 shows a front view of the disassembled portable membrane filtration device 61 in an assembled state, FIG. 15 shows a right side view, FIG. 16 shows a left side view, and FIG. 17 shows a rear view, which can be disassembled. Similar to the portable membrane filtration device 11, the upper unit 62 is placed and fixed on the lower unit 63, and the membrane module 14 is vertically placed in the frame 64, so that the installation space for the disassembled portable water treatment device 61 is large. The space occupied by the bottom surface of the lower unit 63 makes it possible to minimize the installation space and configure the membrane filtration device.

When assembling the disassembly portable membrane filtration device 61 by mounting and fixing the upper unit 62 on the lower unit 63, each line arranged on the upper unit 62 and each line arranged on the lower unit 63 are joined by a union joint. The piping system inside the device can be easily configured without adjusting the position of each line.

Further, when the disassembled portable membrane filtration device 61 is disassembled and transported, it is disassembled into at least the structural units shown in FIG. 13, but if necessary, the components arranged in the upper unit 62 and the lower unit 63, for example, , Backwash tank 24, backwash pump 35, hypoinjection device 47, compressor 48 and the like may be removed. To disassemble the upper unit 62 and the lower unit 63, the fixing means between the upper unit 62 and the lower unit 63 was removed, and the union joints 43, 67, 68, 69, 70, 71 were loosened and arranged in the upper unit 62. By separating the line from the line arranged in the lower unit 63, the upper unit 62 and the lower unit 63 can be easily disassembled.

In the disassembled portable film filtration device 61, all the components necessary for operating the membrane filtration device, including the raw water pump 65, are arranged in the frame, so that the device can be easily managed and when the device is installed. Since it is not necessary to submerge the intake pump in the intake source and the tip of the intake line can be put into the intake source, the selection range of the intake source is large.

As is clear from the above description, according to the decomposition portable membrane filtration device according to the present invention, the membrane filtration device having the required water purification capacity can be configured in a small size, and each unit that can be transported during transportation can be configured. Since it can be disassembled and the units transported at the installation site can be easily assembled and the position of piping etc. can be easily adjusted, water purification for water supply facilities in small villages whose population has decreased due to depopulation etc. The utility value as a device is extremely large.

11, 61 Disassembled portable membrane filtration device 12, 62 Upper unit 13, 63 Lower unit 14 Membrane module 15 Control panel 16, 64 Frame 18 Horizontal piping unit (upper unit side)
19 Horizontal piping unit (lower unit side)
20, 21 Connection part for joining the membrane module 22 Space part for arranging the membrane module 24 Backwash tank 25 Water purification line 26 Backwash tank inflow line 27 Backwash line 28 Drainage line 30 Sub-line 47 Hypoinjection device 49 Raw water line

Claims (3)

Piping units are provided for each of the upper and lower units, and the upper and lower units are joined to form a frame, and the water purification line and drainage line are centrally arranged on either side of the upper and lower units in the membrane module that is detachably provided on this frame. A disassembled portable membrane filtration device characterized by the fact that it has been used. When the hypo-injection device is provided on the lower unit side, the piping unit to which the water purification line is connected and the hypo-injection device are connected by the hypo-injection line, and the upper and lower units are joined to form the frame. The disassembled portable membrane filtration device according to claim 1, wherein only the hypo-line of the upper and lower units is joined. The disassembly portable membrane filtration device according to claim 1 or 2, wherein the lower unit is provided with the piping unit connected to the raw water line, and the piping unit is connected to the connection portion of the membrane module.

Images