JP7357106B2 - Degradable and portable membrane filtration equipment - Google Patents

Description

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

The nationwide water supply coverage rate in Japan reached 97.5% in 2011, making universal water supply almost a reality. On the other hand, Japan's population has been declining since peaking in 2010, and in line with this population decline, many depopulated areas, which account for about half of the nation's municipalities, are becoming marginal villages due to the declining birthrate and aging population. I'm here.

As a general rule, water supply businesses need to cover their operating expenses through water charges, but in small villages that have become marginal communities, revenue from water charges has fallen sharply as the number of water users has declined, making it difficult for businesses to operate their businesses. Efficiency is deteriorating. Securing hygienic drinking and domestic water is essential even in small-scale villages, but these small-scale villages are scattered in steep mountains and are far from water purification facilities, making it difficult to maintain existing facilities. It is becoming economically difficult to maintain existing facilities, let alone update them as they age.

Furthermore, the amount of water required per day in these small-scale villages is extremely small, less than 10 (m ³ /day), and new water supply methods different from conventional water supply methods are required.

As one of the new water supply methods, a stationary type water purification device that targets a small amount of water has been proposed, and 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 (FIGS. 14 to 19) of Patent Document 1, the water purification device of Patent Document 1 is installed in a rectangular parallelepiped frame of width 1400 (mm) x depth 1000 (mm) x height 1985 (mm). , 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 for purifying the supplied raw water. The device is operated by controlling the operation of the pump that sends the chemical solution from the chemical tank to the water, the pipe line that connects each of the above components, the electric valve installed in the pipe line, the raw water supply means, the pump, and the electric valve. The frame is equipped with casters at the bottom of the frame.

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

JP2014-57926A

However, as mentioned above, small-scale villages that have become marginal villages are scattered among steep mountains and have poor road conditions, especially near water intake sources where water purification equipment is installed. However, there are no accessible roads, and in most cases it is necessary to approach on foot along narrow mountain roads.

Therefore, if the water purification device of Patent Document 1 is to be installed near such a water intake source, the water purification device must be transported by small truck or the like to a point where vehicles can enter, and then a cableway or the like must be temporarily constructed to bring it in. Alternatively, it is necessary to disassemble the components to a weight that can be transported by hand and transport them down a narrow mountain road by hand.

If a cableway or the like is temporarily installed and brought in, not only will the installation period become longer due to the temporary installation of the cableway or the like, but the installation cost will also increase significantly. In addition, even if components are disassembled to a weight that can be transported manually, the installation site near the water intake source is generally narrow and difficult to work with, so it is difficult to assemble the disassembled components and place piping, etc. Adjustment becomes a very difficult task.

Furthermore, if the water purification capacity of the water purification equipment significantly exceeds the water purification capacity of 10 (m ³ /day), which is originally required for small-scale communities, the equipment will become larger, making it more difficult to transport and install it. Making the device larger and operating it with a reduced flow rate will lead to an increase in operating costs for the device.

The present invention has been made based on the above circumstances, and its purpose is to have a compact structure that satisfies the required water purification ability, and to be able to be disassembled into units that can be transported. Another object of the present invention is to provide a disassembled and portable membrane filtration device that allows easy assembly of the disassembled unit and adjustment of the positions of piping and the like at the installation site.

In order to achieve the above object, the invention according to claim 1 forms a frame by joining the upper unit and the lower unit, the water purification line and the drainage line are concentrated on the upper unit side, and the raw water line is connected to the lower unit. A piping unit is provided in each of the upper and lower units, and a membrane module is installed in the frame body removably across the upper and lower units, and the water purification line and drainage line are connected to the membrane module on the upper unit side. The raw water line is connected to the membrane module on the lower unit side, a hyposulfur injection device is installed on the lower unit side, and the piping unit on the upper unit side, to which the purified water line is connected, and the hyposium injection device are connected via the hyposium line. In addition, when the upper unit and the lower unit are joined to form a frame, only the hypolayer lines of the upper unit and the lower unit are joined.

In the invention according to claim 2 , the raw water line is connected to a piping unit on the lower unit side, the piping unit on the lower unit side is connected to a connection part on the lower end side of the membrane module, and the piping unit on the upper unit side is connected to the membrane module. This is a removable membrane filtration device connected to the connection part on the upper end of the module .

According to the invention according to claim 1, a piping unit is provided in each of the upper unit and the lower unit, the upper unit and the lower unit are joined to form a frame, and the membrane module detachably provided on the frame is provided with a piping unit. Since the water purification line and drainage line are concentrated on either side of the upper or lower unit, there is no need to troublesome connection work for the main lines when joining the upper and lower units to form the frame. There is no need to perform position adjustment, and the assembly work of the membrane filtration device is facilitated.

According to the invention according to claim 1 , the hypodermic injection device is provided on the lower unit side, the piping unit to which the purified water line is connected and the hypodermic injection device are connected by the hypochlorite line, and the upper unit and the lower unit are joined. When constructing the frame, only the hypolayer lines of the upper and lower units are connected, so the number of line connections between the upper and lower units can be minimized to construct a membrane filtration device. Assembling the device and adjusting the position of piping etc. at the installation site becomes extremely easy.

In addition, by injecting hypochlorite into the filtered water that has been filtered by the membrane module while it passes through the piping unit, the hypochlorite injection device can supply safe purified water to the outside, as well as a backwash tank. By injecting hypochlorite into the filtered water for backwashing stored in the backwashing water, the oxidizing power of the residual chlorine contained in the backwashing water effectively decomposes and removes organic matter adhering to the filtration membrane surface and inside the filtration membrane pores. The filtration capacity of the filtration membrane can be restored.

According to the invention according to claim 2 , since the lower unit is provided with the piping unit connected to the raw water line, the raw water is supplied to the membrane module from the lower end of the vertically placed membrane module via the connecting part for joining the membrane module of this piping unit. It can be fed into a container and subjected to filtration treatment.

In addition, since raw water is supplied from the lower end of the membrane module placed vertically, when backwashing the filtration membrane housed in the membrane module, air is supplied from the lower end of the membrane module to perform air scrubbing and effectively filter the filtration. The suspended matter can be removed from the membrane surface and washed to restore the filtration ability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating an embodiment of a disassembleable and portable membrane filtration device in the present invention. FIG. 2 is a schematic diagram illustrating a water supply process of the disassembleable and portable membrane filtration device of FIG. 1. FIG. FIG. 2 is a schematic diagram illustrating a backwash water storage process of the disassembly and transportable membrane filtration device of FIG. 1. FIG. FIG. 2 is a schematic diagram illustrating a backwashing process of the disassembleable and portable membrane filtration device of FIG. 1. FIG. 2 is a diagram showing a basic configuration example of an upper unit and a lower unit of the disassembleable and portable membrane filtration device of FIG. 1. FIG. FIG. 2 is a diagram showing the positional relationship of the membrane module connection parts when the upper unit of the disassembly and transportable membrane filtration device of FIG. 1 is placed and fixed on the lower unit. 2 is a diagram illustrating a configuration of an example of implementation of the disassembleable and portable membrane filtration device of FIG. 1. FIG. FIG. 2 is a front view of an example of implementation of the disassembly and transportable membrane filtration device of FIG. 1; FIG. 2 is a right side view of an example of implementation of the disassembly and transportable membrane filtration device of FIG. 1; FIG. 2 is a left side view of an implementation example of the disassembleable and portable membrane filtration device of FIG. 1; FIG. 2 is a rear view of an example of implementation of the disassembleable and portable membrane filtration device of FIG. 1; It is a schematic diagram explaining other embodiments of the disassembly and transportable membrane filtration device in the present invention. 13 is a diagram illustrating a configuration of an example of implementation of the disassembleable and portable membrane filtration device of FIG. 12. FIG. FIG. 13 is a front view of a mounting example of the disassembleable and portable membrane filtration device of FIG. 12; FIG. 13 is a right side view of a mounting example of the disassembleable and portable membrane filtration device of FIG. 12; FIG. 13 is a left side view of a mounting example of the disassembleable and portable membrane filtration device of FIG. 12; FIG. 13 is a rear view of the implementation example of the disassembly and transportable membrane filtration device of FIG. 12;

Below, the disassembly and transportable membrane filtration device and the method for disassembling, transporting and assembling the membrane filtration device according to the present invention will be explained in detail based on the drawings.
FIG. 1 is a schematic diagram of an embodiment of the disassembleable and portable membrane filtration device of the present invention. According to FIG. 1, the disassembly and transportable membrane filtration device 11 is roughly divided 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 a frame 16. In this embodiment, the frame 16 (upper unit 12, lower unit 13) is manufactured by joining stainless steel (SUS) L-shaped members in consideration of strength, rigidity, corrosion resistance, etc. The material of the body is not limited to this, for example, it may be manufactured by joining a reinforcing shape to a stainless steel plate.

In addition, 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, and membrane module bonding units connected to the horizontal piping units 18 and 19 Connecting parts 20 and 21 are arranged facing each other across a space 22 for membrane module arrangement.

The horizontal piping unit 18 is a conduit arranged horizontally in 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 part 20, and is used to extract purified water from the membrane module 14 and to , supplies backwash water to the membrane module 14.

The horizontal piping unit 19 is a conduit 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 part 21, and supplies raw water to the membrane module 14.

The connecting parts 20 and 21 are parts that can detachably connect a purified water outlet and a raw water inlet (not shown) of the membrane module 14, and are connected to the membrane module 14 when replacing the membrane module 14 or transporting the disassembleable and portable membrane filtration device 11. can be removed.

Inside the upper unit 12, in addition to the above-mentioned horizontal piping unit 18 and the joint 20 connected to this horizontal piping unit 18, there is a backwash tank 24, a purified water line 25 connected to the horizontal piping unit 18, and a backwash tank inflow. A hypochlorite line 30a is arranged to inject hypochlorite into the horizontal piping unit 18 via a hypochlorite line 26, a backwash line 27, a drainage line 28 connected to the membrane module 14, and a hypochlorite injection section 29. That is, in the disassembly and transportable 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 arranged together in the upper unit 12.

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

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

The backwash tank inflow line 26 is a pipe line for sending purified water filtered by the membrane module 14 to the backwash tank 24, and connects the horizontal piping unit 18 and the backwash tank 24. An electric valve 34 is provided midway to control the flow of purified water.

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

The drainage line 28 is a conduit for draining the wastewater after backwashing the filtration membrane stored in the membrane module 14 to the outside of the membrane filtration device, and connects the wastewater outlet 40 and the wastewater outlet 41 of the membrane module 14 to the outside of the membrane filtration device. An electric valve 42 is provided in the middle of the pipe to connect between the pipes and control the flow of waste water.

The sodium hypochlorite line 30a is connected to the horizontal piping unit 18 via the hypochlorite injection part 29, and supplies hypochlorite for disinfection supplied from a hypochlorite injection device 47, which will be described later, to purified water flowing inside the horizontal piping unit 18. This is a conduit for supplying water. A check valve 44 is provided in the hypoxia line 30a in front of the hypoxia injection section 29 to allow hypoxia to pass only to the hyposium injection section 29 side. The Hypo-A line 30a is connected to a Hy-A line 30b, which will be described later, by a union joint 43 to form the Hy-A line 30.

Inside the lower unit 13, in addition to the horizontal piping unit 19 and the connection part 21 connected to the horizontal piping unit 19, there are a hypotite injection device 47, a compressor 48, a raw water line 49 connected to the horizontal piping unit 19, and an air supply. A line 50 is arranged.

The hypotite injection device 47 is a device that injects hypotria for disinfection into the purified water flowing inside the horizontal piping unit 18 in the upper unit 12 via the hypotria injection part 29, and includes a hypotium injection pump 51 and a hypotium tank. 52. A hypochlorite line 30b is attached to the hypochlorite injection device 47, and the hypochlorite line 30b is connected to the hypochlorite line 30a in the upper unit 12 by a union joint 43 to form the hypochlorite line 30, Hypotonia is supplied from the injection device 47 to the hypochlorite injection section 29.

In this embodiment, a diaphragm metering pump of φ4×20 (W) is used as the hypotite injection pump 51, and a rectangular polyethylene tank with a capacity of 5 (L) is used as the hypotite tank 52.

The compressor 48 simultaneously supplies air for air scrubbing to the membrane module 14 when backwashing the filtration membrane housed in the membrane module 14 with backwash water. 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 raw water to be filtered to the membrane module 14, and connects the raw water intake port 53 and the horizontal piping unit 19. A strainer 54 that allows passage of raw water to the membrane module 14 and a check valve 55 that only allow passage of raw water to the membrane module 14 are provided. In this embodiment, a disk-type strainer with an opening size of 200 (μm) is used as the strainer 54.

In this way, the raw water line 49 is arranged in the lower unit 13 and the raw water is supplied from the lower end of the vertically placed membrane module 14 via the horizontal piping unit 19. When backwashing 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 above-mentioned horizontal piping unit 18 in the upper unit 12, water purification line 25, backwash tank inflow line 26, backwash line 27, drainage line 28, and the horizontal piping unit 19 in the lower unit 13, For the raw water line 49, an HIVP pipe (impact-resistant hard polyvinyl chloride pipe) with an inner diameter of 16A is used.

The membrane module 14 houses a filtration membrane made of an MF (microfiltration) membrane or a UF (ultrafiltration) membrane inside, and performs solid-liquid separation using a dead-end method to remove general bacteria, pathogenic bacteria, and other bacteria contained in the raw water. Suspended solids (SS) etc. are removed by filtration. In this embodiment, considering that the target water purification amount of the decomposable and portable membrane filtration device 11 is about 10 (m ³ /day), the membrane module 14 is made of PVDF (polyfluoride) with a membrane area of 7 (m ² ). A small membrane module containing a UF membrane (ultrafiltration membrane) made of vinylidene is used.

The membrane module 14 is detachably connected to a connecting part 20 connected to the horizontal piping unit 18 in the upper unit 12 and a connecting part 21 connected to the horizontal piping unit 19 in the lower unit 13, and has a purified water outlet (not shown) connected to the upper side. Similarly, it is placed vertically in the removable membrane filtration device 11, passing vertically between the upper unit 12 and the lower unit 13, with the raw water inlet (not shown) facing downward.

The control panel 15 is a device for automatically operating the disassembly and transportable membrane filtration device 11, and backwashes the membrane module 14 at preset time intervals through sequence control using a PLC (Programmable Logic Controller). Cleaning and air scrubbing are performed to restore the filtration capacity of the membrane filtration equipment. In this membrane filtration device, since the filtration process is performed using a dead-end filtration method (total filtration), substances to be filtered accumulate on the surface of the filtration membrane housed in the membrane module 14, so they are periodically stored in the membrane module 14. It is essential to perform backwash cleaning and air scrubbing of the filtration membrane to remove accumulated filtration target substances and restore the filtration ability of the filtration membrane.

Therefore, the control panel 15 operates and stops the backwash pump 35, hypochlorite injection pump 51, and water intake pump 57 based on the control sequence and a signal from a water level gauge (not shown) installed inside the backwash tank 24. Along with these controls, the opening and closing of the electric valves 33, 34, 37, and 42 are also controlled.

In addition, in this disassembly and transportable membrane filtration device 11, a water intake line 56 is connected to the raw water intake port 53, and a water intake pump 57 attached to the tip of this water intake line 56 is introduced into a water source 58 to take raw water. .

As described above, in the disassembly and transportable membrane filtration device 11 in this embodiment, the only line that runs vertically between the upper unit 12 and the lower unit 13 is the hypodermic line 30, and the other main lines are the upper and lower units. They are integrated into the unit 12 or the lower unit 13. Therefore, when the upper unit 12 is mounted and fixed on the lower unit 13, the only line that needs to be connected is the Hyuga line 30, and there is no need to perform troublesome connection work and position adjustment for other major lines. .

In addition, the hypochlorite line 30a in the upper unit 12 and the hypochlorite line 30b in the lower unit 13 are connected by a union joint 43, so the upper socket (provided at the lower end of the hypochlorite line 30a on the upper unit side) The socket (having a union flange portion) and the lower socket (socket having a union screw portion provided at the upper end of the lower unit side hypochlorite line 30b) are in a state of facing each other, as in the separable and portable filtration device of the present invention. Furthermore, even if separate frames are used, positioning in piping connections is not only facilitated, but also the upper and lower sockets can be easily connected and separated by simply turning the union nut that spans both.

Next, the operating method and effects of the decomposable and portable membrane filtration device 11 will be explained. The operation process of the decomposable and portable membrane filtration device 11 includes three processes: a water supply process, a backwash water storage process, and a backwash process. Below, each process will be explained using drawings. In the drawings, the pipes indicated by solid lines indicate that raw water, filtered water, etc. are flowing, and the pipes indicated by broken lines indicate that raw water, filtered water, etc. are not flowing. show. Furthermore, electric valves expressed in white indicate that they are in an open state, and electric valves expressed in black indicate that they are in a closed state.

FIG. 2 shows the water supply process of the disassembleable and portable membrane filtration device 11. The water supply process is a process 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 purified water. 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 through the water intake line 56, and dirt contained in the raw water is removed by a strainer 54 provided in the raw water line 49. Thereafter, it is supplied to the membrane module 14 via the horizontal piping unit 19.

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

The filtered water, which has been filtered by the membrane module 14 to remove general bacteria, pathogenic bacteria, suspended solids (SS), etc. contained in the raw water, passes through the horizontal piping unit 18 and is treated with hypochlorite in the hypochlorite injection section 29. The water is injected and supplied as safe purified water to the outside of the membrane filtration device via the water purification line 25, and stored in a water distribution reservoir or water tank (not shown). The operation of the disassembleable and 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 installed in the water distribution reservoir or water tank. When detected, the operation of the water intake pump 57 is stopped, and when the water level drops to a certain level, the operation of the water intake pump 57 is restarted.

In the separation/decomposition portable membrane filtration device 11, the membrane module 14 performs filtration of raw water using a dead-end filtration method. It is necessary to perform backwashing, and the execution of this backwashing is controlled by the control panel 15. In this embodiment, control is performed so that backwash cleaning and air scrubbing cleaning are performed once every 30 minutes of operation of the membrane filtration device. Therefore, after a predetermined period of time has elapsed, in preparation for performing backwash cleaning, the purified water into which hypochlorite is injected from the hyposulfur injection unit 29 after being filtered by the membrane module 14 into the backwash tank 24 is used as backwash water for backwashing. The process moves to a backwash water storage process in which the water is stored in the tank 24.

In the backwash water storage process, as shown in FIG. The electric valve 37 and the electric valve 42 provided in the drainage line 28 are closed. In addition, the hyposulfur injection pump 51 of the hyposulfur injection device 47 is operated to supply hyposium to the hyposulfur injection unit 29, but the backwash pump 35 and compressor 48 are stopped.

As a result, the purified water that has been filtered by the membrane module 14 and into which hypotium is injected by the hypotite injection unit 29 flows into the backwash tank 24 via the backwash tank inflow line 26 and is stored as backwash water. . This backwash water is stored until a water level gauge (not shown) placed in the backwash tank 24 detects a full water state.

When the water level gauge installed in the backwash tank 24 detects that the backwash tank 24 is full, the backwash water storage process ends, and immediately 1 Backwash water is passed through the next side, and the process moves to a backwashing step in which contaminants adhering to the surface of the filtration membrane and inside the membrane pores are removed.

In the backwashing process, as shown in FIG. The electric valve 42 provided in the backwash tank inflow line 26 and the electric valve 33 provided in the purified water line 25 are closed.

Thereafter, the backwash pump 35 is operated and the electric valve 37 is opened, thereby pressurizing the backwash water flowing down from the backwash tank 24 and passing it through the backwash line 27 and the horizontal piping unit 18 to the membrane module 14. The filtration membrane supplied from the secondary side and stored is backwashed. At the same time, the compressor 48 is operated to supply air from the primary side of the membrane module 14 via the air supply line 50 to perform air scrubbing cleaning of the stored filtration membrane. In this way, since the filtration membrane is backwashed using backwash water and air scrubbed, contaminants adhering to the filter surface and inside the filter pores can be effectively removed.

As mentioned above, in the backwash water storage process, hypoxia is injected into the filtered water stored in the backwash tank 24, so the backwash water used in the backwash process contains hypoxia at a predetermined concentration. Unlike simply backwashing with clean water, the oxidizing power of the residual chlorine contained in the backwash water removes humic substances and microbial-derived proteins that adhere to the filtration membrane surface and inside the filtration membrane pores. It is possible to effectively decompose and remove organic matter and restore the filtration ability of the filtration membrane. Further, by storing backwash water containing hypochlorite in the backwash tank 24, the growth of mold and algae in the backwash tank 24 can be effectively suppressed.

The waste water after backwashing the inside of the membrane module 14 and the air after air scrubbing are drained to the outside of the membrane filtration device via the drain line 28. This backwash process continues until the water level gauge provided in the backwash tank 24 detects that the water level of the backwash water stored in the backwash tank 24 has reached the bottom of the tank.

Note that the time when the backwashing process ends is when the water level gauge installed in the backwash tank 24 detects that the water level of the backwash water stored in the backwash tank 24 has reached the bottom, as described above. Alternatively, it may be set at the time when backwash cleaning has elapsed for a predetermined period of time.

After the backwashing process is completed, the water supply process may be started immediately, but the pressure difference between the primary side and the secondary side of the membrane module 14 measured with a pressure gauge (not shown) indicates that the backwashing process is being performed. If the pressure difference exceeds the standard value, the backwash water storage process and the backwash process may be repeated multiple times until the differential pressure falls within the standard value.

In the operation of the disassembly and transportable 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 water is immediately transferred to the backwash step. This minimizes the time that backwash water is stored inside the tank 24, and suppresses condensation on the sides and bottom of the backwash tank 24.

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

A basic configuration example of the upper unit 12 and lower unit 13 of the disassembleable and portable membrane filtration device 11 is shown in FIG. As shown in FIG. 5, a horizontal piping unit 18 is arranged above the upper unit 12, and a connecting portion 20 for joining membrane modules is connected downward to this 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 membrane modules is connected upward to this horizontal piping unit 19. The connecting parts 20 and 21 for joining the membrane modules are arranged in the upper unit 12 and the lower unit 13, respectively, so as to face each other across the space 22 for arranging the membrane modules.

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

Next, an implementation example of the disassembleable and portable membrane filtration device 11 configured as described above will be described. As shown in FIG. 7, the disassembly and transportable membrane filtration device 11 includes 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. FIG. 8 shows a front view of the assembled portable membrane filtration device 11, 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, the upper unit 12 is placed and fixed on the lower unit 13, and the membrane module 14 is placed vertically within the frame 16, so the installation space for the disassembly and transportable membrane filtration device 11 is limited to the lower unit. This space is occupied by the bottom surface of 13, and the membrane filtration device can be constructed by minimizing the installation space. Note that as a fixing means for placing 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 disassembleable and transportable membrane filtration device 11 is disassembled and transported, it is disassembled into at least the constituent units shown in FIG. The washing tank 24, backwash pump 35, hypochlorite injection device 47, compressor 48, etc. may be removed. The upper unit 12 and lower unit 13 can be easily disassembled by removing the fixing means between the upper unit 12 and the lower unit 13, loosening the union joint 43, and separating the hypoa line 30a and the hypoa line 30b. I can do it.

Next, a disassembleable and portable membrane filtration device 61, which is another embodiment of the present invention, will be described. In the description, parts common to the disassembly and transportable membrane filtration device 11 described above are given the same reference numerals and explanations are omitted, and only parts having different configurations etc. will be explained.

As shown in FIG. 12, the disassembly and transportable membrane filtration device 61 includes an upper unit 62, a lower unit 63, a membrane module 14, and a control panel 15, similar to the above-described disassembly and transportable 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 a frame 64. In this embodiment as well, the frame 64 (upper unit 62, lower unit 63) is manufactured by joining L-shaped stainless steel (SUS) materials, but the material of the frame is not limited to this. .

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

For this reason, the upper unit 62 includes, in addition to the horizontal piping unit 18 and the connection part 20 connected to the horizontal piping unit 18, the backwash tank 24, the purified water 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 hypochlorite line 30a for injecting hypochlorite into the horizontal piping unit 18 via a hypochlorite injection section 29 are arranged. There is. In addition to these, the upper unit 62 is provided with a compressor 48 and an air supply line 50a.

Further, in the lower unit 63, a backwash line 27b provided with a backwash 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 a water intake pump 65, which was disposed outside the membrane filtration device in the decomposable and portable membrane filtration device 11.

As shown in FIG. 12, the water purification line 25, backwash line 27, drainage line 28, hypochlorite line 30, and air supply line 50 of the disassembly and transportable membrane filtration device 61 are connected between the upper unit 62 and the lower unit 63. Separated. Therefore, when assembling the disassembleable and portable membrane filtration device 61, it is necessary to place 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 a union joint 67 to form the water purification line 25, the backwash line 27a and the backwash line 27b are joined by a union joint 68, and the backwash line 27b and the backwash line 27c are joined by a union joint 68. The backwash line 27 is created by joining the joint 69, the drainage line 28 is created by joining the drainage line 28a and the drainage line 28b by the union joint 70, and the drainage line 28 is created by joining the hypoa line 30a and the hypoa line 30b by the union joint 43. The air supply line 50 is constructed by joining the sub-line 30 to the air supply line 50a and the air supply line 50b with a union joint 71.

In this way, because union joints are used to connect the lines, as mentioned above, the upper and lower sockets are facing each other, which not only facilitates positioning for each piping connection, but also makes it easier to position the upper and lower sockets. Connecting and separating the socket and the lower socket can be easily done by simply turning the union nut that spans both. Note that the line connection means is not limited to a union joint, and may be any other means.

Furthermore, as is clear from FIG. 12, since the overall configuration of the disassembleable and portable membrane filtration device 61 is the same as the overall configuration of the disassembly and portable membrane filtration device 11, the operation of the disassembly and portable membrane filtration device 61 is An explanation of the method and effects will be omitted.

Next, an implementation example of the disassembleable and portable membrane filtration device 61 configured as described above will be described. As shown in FIG. 13, the disassembly and transportable membrane filtration device 61 includes 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 and 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. Similar to the portable membrane filtration device 11, the upper unit 62 is mounted and fixed on the lower unit 63, and the membrane module 14 is placed vertically within the frame 64, so the installation space of the disassembleable and portable water treatment device 61 is small. This space is occupied by the bottom surface of the lower unit 63, and the installation space can be minimized to configure a membrane filtration device.

When assembling the disassembly and transportable 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 with a union joint. The piping system inside the device can be easily configured without adjusting the position of each line.

When the disassembleable and transportable membrane filtration device 61 is disassembled and transported, it is disassembled into at least the constituent units shown in FIG. , the backwash tank 24, the backwash pump 35, the hypotite injection device 47, the compressor 48, etc. may be removed. To disassemble the upper unit 62 and lower unit 63, remove the fixing means between the upper unit 62 and lower unit 63, loosen the union joints 43, 67, 68, 69, 70, and 71, and place them inside the upper unit 62. By separating the lines from the lines disposed in the lower unit 63, the upper unit 62 and the lower unit 63 can be easily disassembled.

In the disassembly and transportable membrane filtration device 61, all the components necessary for operating the membrane filtration device, including the raw water pump 65, are arranged within the frame, making it easy to manage the device and making it easier to install the device. There is no need to submerge the water intake pump in the water intake source, and the tip of the water intake line only needs to be introduced into the water intake source, so there is a wide range of water intake sources to choose from.

As is clear from the above description, according to the disassembly and transportable membrane filtration device according to the present invention, it is possible to construct a membrane filtration device having a required water purification capacity in a small size, and at the time of transportation, it is possible to construct a membrane filtration device in a compact size. It can be disassembled into two parts, and it is easy to assemble the transported unit and adjust the position of piping etc. at the installation site, making it ideal for water purification for water supply facilities in small villages where the population has decreased due to depopulation etc. The utility value as a device is extremely large.

11, 61 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 Side piping unit (lower unit side)
20, 21 Connection part for joining membrane modules 22 Space part for membrane module arrangement 24 Backwash tank 25 Purified water line 26 Backwash tank inflow line 27 Backwash line 28 Drainage line 30 Hypolyte sodium line 47 Hypolyte injection device 49 Raw water line

Claims (2)

The upper unit and the lower unit are joined to form a frame body, the water purification line and the drainage line are arranged centrally on the upper unit side, the raw water line is arranged on the lower unit side, and each of the upper unit and the lower unit A piping unit is installed in
A membrane module is removably provided within the frame body spanning the upper unit and the lower unit,
The water purification line and the drainage line are connected to the membrane module on the upper unit side,
the raw water line is connected to the membrane module on the lower unit side,
A hypochlorite injection device is provided on the lower unit side, a piping unit on the upper unit side to which the purified water line is connected and the hypochlorite injection device are connected by a hypochlorite line, and the upper unit and the lower unit are joined. The disassembleable and portable membrane filtration device is characterized in that when constructing the frame body, only the hypolayer lines of the upper unit and the lower unit are joined. The raw water line is connected to the piping unit on the lower unit side, and the piping unit on the lower unit side is connected to the connection part on the lower end side of the membrane module,
The disassembly and transportable membrane filtration apparatus according to claim 1, wherein the piping unit on the upper unit side is connected to the connection part on the upper end side of the membrane module .

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