JP2022110507A - Underground water purification device - Google Patents

Abstract

To provide an underground water purification device.SOLUTION: The underground water purification device according to the present invention is a unit type underground water purification device comprising a water delivery pump that can be connected to an underground water source or to a well water tank via a water supply pipe, chemical adding means, sand filtration means, and membrane filtration means, each installed in a conveyable housing body. The water delivery pump is driven by a single phase 100 V power source.SELECTED DRAWING: Figure 1

Description

The present invention relates to an underground water purification system.

Conventionally, there is known a groundwater purifying apparatus capable of pumping up groundwater, purifying it, and supplying it as purified water (see Patent Literature 1).
In addition, in an emergency such as when a water pipe breaks due to an earthquake or other causes and the supply of clean water is interrupted, it is necessary to ensure the amount of pumped groundwater that can supply a sufficient amount of water to the area. For this reason, conventionally, a groundwater purifier is known that includes a pump for groundwater, a raw water tank for storing groundwater, a membrane filtration device, and a water pump (see Patent Document 2).

JP-A-2005-95813 JP 2014-8435 A

The groundwater purifier described in Patent Document 1 includes a well water submersible pump, a minimum iron removal device, a manganese removal device, an activated carbon filtration device, a chlorine sterilization device, etc. Developed with the need for This equipment uses a submersible pump for well water to backwash the iron and manganese removal equipment and the activated carbon filtration equipment. It has been developed as a system with reduced costs.

The groundwater purifying device described in Patent Document 2 is designed to flexibly operate the groundwater purifying device based on the cancellation of groundwater pumping regulations in an emergency such as when a water pipe breaks due to an earthquake or other causes and the supply of purified water is interrupted. has been developed. For this reason, the groundwater purifying apparatus described in Patent Document 2 has a regulation mode that limits the amount of water supply during normal operation and a regulation cancellation mode that increases the amount of water supply when the regulation is lifted.

By the way, in an emergency such as when a water pipe is ruptured due to an earthquake, flood, or some other reason, and the supply of purified water is cut off, there is a demand for a device that can be temporarily transported to a site where it is needed and can be supplied with purified water.
The groundwater purification apparatus described in Patent Document 1 has a large apparatus scale for reasons such as the need for a backwash tank. There is a problem that it is not suitable for applications such as installation and use.
The groundwater purification device described in Patent Document 2 has a regulation mode and a regulation cancellation mode, but since it is a stationary device for the purpose of switching between normal and emergency, it can be brought to the site where it is needed in an emergency. Not configured for use.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems, and to provide an underground water purifying apparatus that can be brought into the field and used in an emergency such as when a water pipe breaks.

The present invention has the following configurations.
[1] A groundwater purifier is a unit provided with a water supply pump connectable to a groundwater source or a well tank via a water supply pipe, a chemical addition means, a sand filtration means and a membrane filtration means inside a transportable container. type groundwater purification apparatus, wherein the water pump is a pump that operates at a single-phase 100V.

[2] It is preferable that the groundwater purifier includes a backwash pump for the sand filtering means, and that the backwash pump operates at a single-phase voltage of 100V.

[3] In the groundwater purifier, it is preferable that the membrane filtration means is a microfiltration membrane.

[4] In the groundwater purifier, it is preferable that the membrane filtration means is a cartridge membrane.
[5] In the groundwater purifier, it is preferable to further include reverse osmosis membrane means in the latter stage of the membrane filtration means.

[6] In the groundwater purification device, it is preferable that the purification capacity of the groundwater purification device is 1 t/hour or less.
[7] In the groundwater purification apparatus, the power supply source for the water pump and/or the backwash pump is a household power supply, an electric vehicle, a diesel generator, an LP gas generator, a solar generator, or a wind power generator. Any one or more selected from the group is preferable.

INDUSTRIAL APPLICABILITY According to the groundwater purifier of the present invention, it is possible to provide a groundwater purifier that can be brought into a necessary site and used in an emergency such as when a water pipe breaks. Since the sand filtering means is provided, iron and manganese contained in groundwater can be removed, and domestic water can be used as sand-filtered water. Further, the sand-filtered water is sterilized or sterilized through a membrane filtration means to obtain membrane-filtered water, which can be used as emergency drinking water.
In addition, a water pump capable of operating at a single-phase 100 V is provided as a water pump for pumping up groundwater. As a result, not only household power sources but also power sources that can be used even in emergencies, such as storage battery power sources, solar power sources, electric vehicle power sources, diesel power sources, LP gas power sources, etc. Either can be used to pump groundwater and feed it through sand filtration means and membrane filtration means to provide sand filtered water or membrane filtered water at the site of installation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which mainly shows the front side and right side of the groundwater purification apparatus of 1st Embodiment which concerns on this invention. It is a perspective view which mainly shows the back side and left side of the same groundwater purification apparatus. It is a right view which shows the outline|summary of an internal structure of the same groundwater purification apparatus. It is a top view which shows the outline|summary of an internal structure of the same groundwater purification apparatus. It is a left view which shows the outline|summary of an internal structure of the same groundwater purification apparatus. It is a front view which shows the outline|summary of an internal structure of the same groundwater purification apparatus. It is a block diagram which shows an example of the piping connection structure of the same groundwater purification apparatus. It is a front view which shows the detailed structure which added piping and a piping connection part to the internal structure of the same groundwater purification apparatus. It is a top view which shows the detailed structure which added piping and a piping connection part to the internal structure of the same groundwater purification apparatus. It is a left side view which shows the detailed structure which added piping and a piping connection part to the internal structure of the same groundwater purification apparatus. It is a rear view which shows the outline|summary of an internal structure of the groundwater purification apparatus of 2nd Embodiment which concerns on this invention. It is a front view which shows the outline|summary of an internal structure of the groundwater purification apparatus of 2nd Embodiment which concerns on this invention.

A groundwater purifier according to a first embodiment of the present invention will be exemplified below, and its configuration will be described in detail with reference to FIGS. 1 to 10. FIG. In addition, in the drawings used for the following description, the scale of each member may be changed as appropriate in order to make the size of each member recognizable.
1 and 2 show the appearance of the groundwater purification device 1 of the first embodiment, and FIGS. 3 to 6 show the outline of the internal configuration. It has a unit type structure with a size that can be transported by assembling a panel and a door into a box shape.
The groundwater purifying apparatus 1 of the present embodiment is mainly intended for shelters with a small water supply (less than 20 m ² /day) that do not correspond to dedicated water supply, schools and facilities for the elderly that correspond to welfare shelters, etc. It is suitable for use in situations such as the rapid development of an emergency water supply lifeline for drinking water and domestic water in the event of a disaster.

The groundwater purifier 1 includes a rectangular bottom frame 2 assembled from four metal members, four support frames 3 erected at the four corners of the bottom frame 2, and four supports. A container 5 having a rectangular ceiling frame 4 joined to the upper part of the frame 3 is provided. The bottom frame 2 is provided as the bottom of the container 5 , and the ceiling plate 6 is attached to the ceiling frame 4 . Caster members 7 are attached to the bottom surface side of the four corners of the bottom frame 2 to enable the underground water purifier 1 to move. Suspension fittings 6A are attached to the four corners of the upper surface of the ceiling plate 6 so as to be connected to the ceiling frame 4 and to suspend the groundwater purification apparatus 1. As shown in FIG.
The size of the container 5 is, for example, approximately 1400 mm wide, 1700 mm deep, and 2050 mm high. Further, when the groundwater purifier 1 is specialized for emergency water supply in the event of a disaster, the target is 1 m ³ /h treatment×18 hours, 3 to 18 L×1000 persons/day.

Cross members 10 and 11 are installed vertically between the right and left support frames 3 and 3 on the front side of the groundwater purification device 1 so as to divide the front side of the groundwater purification device 1 into an upper portion, a central portion and a lower portion. The horizontal member 10 is installed at the central portion in the height direction of the support frames 3 , 3 , and the horizontal member 11 is installed slightly below the horizontal member 10 . A support plate 12 is attached between the horizontal member 10 and the horizontal member 11 so as to constitute a part of the front surface of the groundwater purification device 1 , and between the horizontal member 11 and the bottom frame 2 , a part of the front surface of the groundwater purification device 1 . A cover plate 13 is attached so as to form a part. Four water taps 15 , 16 , 17 , 18 and a water supply pipe 19 are attached so as to pass through the support plate 12 .
Above the cross member 10, front panels 20, 21 are attached to the support frame by hinge members 22 to open and close the opening surrounded by the cross member 10, the left and right support frames 3, 3, and the ceiling frame 4. It is provided in the shape of a double door so that it can be opened and closed freely. Although not shown in FIG. 1, the front panels 20 and 21 are prevented from opening and closing by key members attached to them. Therefore, the front panels 20 and 21 are constructed so that they can be opened and closed by unlocking the key members as needed.

On the right side of the groundwater purification apparatus 1, when the groundwater purification apparatus 1 is viewed from the right side, a side door 24 and a side surface are supported by hinge members 23 attached to the top and bottom of the left and right support frames 3, 3 so as to be freely opened and closed. A door 25 is provided. The side door 24 and the side door 25 have substantially the same width and height, and the side door 24 closes about half of the right side of the groundwater purification device 1 near the front of the groundwater purification device 1, and the groundwater purification device 1 is closed. A side door 25 closes about half of the right side surface of the groundwater purification apparatus 1 near the back surface of the groundwater purification apparatus 1 . A handle member 24D is attached to the central portion of the side door 24 opposite to the side where the hinge is attached, and the user can open and close the side door 24 by operating the handle member 24D to move the side door 24 forward. is configured to A handle member 25D is also attached to the central portion of the side door 25 opposite to the hinge attachment side, and the user operates the handle member 25D to operate the side door 25 to the front side, thereby opening the side door 25. configured to open and close. The side doors 24 and 25 can be opened for maintenance and adjustment of various devices provided inside the groundwater purification apparatus 1 .

FIG. 2 shows the back side and the left side of the groundwater purification device 1 .
On the left side of the groundwater purifier 1, when the groundwater purifier 1 is viewed from the left side, a side door is supported openably and closably in a double-sided manner by hinge members 27 attached to the top and bottom of the left and right support frames 3, 3. 28, 29 are provided. The side door 28 includes a window frame member 28A assembled in the shape of a rectangular frame, horizontal members 28B attached inside the window frame member 28A, and cover plates 28C, 28C provided to close an opening surrounded by these members. It has The side door 29 includes a window frame member 29A assembled in a rectangular frame shape, horizontal members 29B attached inside the window frame member 29A, and cover plates 29C, 29C provided to close an opening surrounded by these members. It has Handle members 28D and 29D are provided at portions where the side doors 28 and 29 are butted against each other, and the left side of the groundwater purification device 1 is opened by operating these handle members 28D and 29D by the user of the groundwater purification device 1. configured to be open. The side doors 28 and 29 can be opened for maintenance and adjustment of various devices provided inside the groundwater purification apparatus 1 .

Rear doors 31 and 32 are provided on the upper part of the rear side of the groundwater purification apparatus 1 so that they can be opened and closed in a double-door manner by means of hinge members 30 attached to the top and bottom of the left and right support frames 3 and 3 when the groundwater purification apparatus 1 is viewed from the rear. is provided. The rear door 31 includes a cover plate 31B inside a rectangular frame 31A. The rear door 32 is configured by including a cover plate 32B inside a rectangular frame 32A. Handle members 31D and 32D for opening the rear doors 31 and 32 are provided at the abutting portions on the side opposite to the side where the hinges are attached. The rear doors 31 and 32 are formed to have a height of about 2/3 of the height of the support frame 3 .

A vertical bar member 35 is provided at the lower back side of the groundwater purification device 1 to divide the lower back side into the left and right, and when the groundwater purification device 1 is viewed from the rear, the left opening of the vertical bar member 35 can be freely opened. An auxiliary door 36 is attached by a hinge member 36A. The right opening of the vertical beam member 35 is vertically divided by a horizontal beam member 37, the upper opening of the horizontal beam member 37 is closed by a cover plate 38, and the lower opening of the horizontal beam member 37 is closed by a support plate 39. A water supply pipe connection 40 and a drain pipe connection 41 , 41 are attached to the support plate 39 .

Next, details of the internal structure of the groundwater purifier 1 will be described with reference to FIGS. 3 to 10. FIG.
The groundwater purifier 1 of the present embodiment contains, as main equipment, an inverter-type well pump (water pump) 51, a backwash pump 52, a sand filtration tower (sand filtration means) 53, and a disinfectant shown in FIG. It has a chemical liquid tank 54, a cartridge type filter (membrane filtering means) 55, a control panel 56, a power switching panel 57, a generator 58, and an auxiliary tank 59 shown in FIGS. Among these, the generator 58 and the auxiliary tank 59 are optional devices. The auxiliary tank 59 can be installed as required, for example, as a tank containing a coagulant or the like for removing metal elements contained in the well water.

As shown in FIG. 7, a water supply pipe connection part 40 is connected to the suction side of a well pump 51, and a water supply pipe 61 is supplied from a well (groundwater source) 60 provided near the place where the groundwater purification apparatus 1 is installed. It is configured to be able to pump up well water through an intervening well. When the water level of the well 60 is low, a submersible pump 62 for pumping assistance may be provided inside the well 60 . In addition, if there is an existing well and well water tank, it is configured so that well water can be pumped up from the well water tank.
The well 60 is drilled in advance near the place where the groundwater purifier 1 is brought in and used, or an existing well is used. The well pump 51 can be, for example, a single-phase 100 V, 400 W scale inverter type pump (for example, capacity/ability: 17 L/min×32 mH).

A discharge side of the well pump 51 is connected to an inlet portion 66 of the sand filter tower 53 via a connecting pipe 65 . A branch pipe 67 is connected to an intermediate portion of the connection pipe 65 , and the branch pipe 67 is connected to an outlet portion 68 of the sand filtration tower 53 .
The sand filter tower 53 has a general configuration in which a filter medium (sand) is supported by a support floor inside a container made of FRP, steel, or the like. is formed. In addition, the ceiling and bottom of the sand filter tower 53 are provided with pipe connections for backwashing. Iron and manganese are removed from the well water supplied from the inlet 66 to the inside of the sand filter tower 53 while passing through the filter media, and the well water reaches the outlet 68 .

A gate valve 70 and a butterfly valve 71 are incorporated near an inlet 66 of the sand filter tower 53 in a connecting pipe 65 connected to the sand filter tower 53 . The branch pipe 67 incorporates a sluice valve 72 , a backwash pump 52 , a check valve 73 , a sluice valve 74 and a butterfly valve 75 . For the backwash pump 52, for example, a single-phase 100V, 250W scale pump (for example, capacity/capacity: 50L/min.times.10mH) can be applied.
A supply pipe 76 is connected downstream of the branched portion of the branch pipe 67 in the connection pipe 65 , and this supply pipe 76 is connected to the liquid chemical tank 54 . The chemical tank 54 contains a disinfectant such as hypochlorous acid water, and the chemical can be supplied to the connection pipe 65 by the chemical injection pump 77 attached to the chemical tank 54 and incorporated in the supply pipe 76 . ing.
In this embodiment, the chemical solution tank 54 and the chemical solution injection pump 77 constitute chemical adding means.
A check valve 79 , a sluice valve 80 and a flow meter 81 are incorporated in this order from the upstream side upstream of the branched portion of the branched pipe 67 in the connecting pipe 65 .

In the connecting pipe 65, a first drain pipe 82 is connected between the position where the butterfly valve 71 is provided and the connecting portion to the inlet portion 66 of the sand filter tower 53, and the first drain pipe 82 is connected to the two pipes mentioned above. It is connected to one of the drain pipe connection portions 41 . A second drain pipe 83 connected to the ceiling of the sand filter tower 53 is provided, and this second drain pipe 83 is connected to the other of the two drain pipe connections 41 described above. A branch pipe 84 is provided at the bottom of the sand filter tower 53 , and this branch pipe 84 is connected to the second drain pipe 83 . A sluice valve 86 is incorporated in the second drain pipe 83 , and a sluice valve 87 is incorporated in the branch pipe 84 . A butterfly valve 88 is incorporated in a portion of the first drain pipe 82 near the inlet 66 of the sand filter tower 53 .

A branch pipe 90 branching from the branch pipe 67 is connected to the first drain pipe 82 downstream from the connection position of the butterfly valve 88 . The branch pipe 90 is branched from the position where the butterfly valve 75 is installed in the branch pipe 67 and the connecting portion to the outlet portion 68 of the sand filter tower 53, and the branch pipe 90 incorporates a butterfly valve 91 and a gate valve 92. is

A water supply pipe 93 is connected near the connection portion of the branch pipe 67 connected to the outlet portion 68 of the sand filter tower 53, and this water supply pipe 93 is connected to the water supply pipe 19 described above. A gate valve 94 and a gate valve 95 are incorporated. With the above configuration, well water that has passed through the sand filter tower 53 can be supplied to the water supply pipe 19 as domestic water.
A connection pipe 96 is branched from a portion of the water supply pipe 93 in which the gate valve 94 and the gate valve 95 are incorporated. 16 is connected.
7, the connection pipe 96 is branched into two via a butterfly valve 97 and connected to the first filter 55 and the second filter 55, and the discharge side of the first filter 55 is supplied with water via a water supply pipe 98. The outlet side of the second filter 55 is connected to the water tap 16 via a water supply pipe 99 .
With the above configuration, the sand-filtered water that has passed through the sand filtration tower 53 and reached the connecting pipe 96 can be passed through the filter 55 and then individually supplied to the water taps 15 and 16 as membrane-filtered water. .

The filter 55 is a replaceable known filter device having a cartridge-type microfiltration membrane (cartridge membrane) inside a container, and the microfiltration membrane has pores with a size of about 50 nm to 10 μm inside. The filter 55 can be used by replacing the microfiltration membrane (cartridge membrane) in the housing container with a new one. As a cartridge-type microfiltration membrane (cartridge membrane), for example, a hollow core membrane (made of polyethylene that removes 0.1 μm or more) manufactured by Mitsubishi Chemical Cleansui Co., Ltd. can be applied. With this hollow membrane, it is possible to effectively remove germs, bacteria (E. coli), and the like, and to remove turbidity. It is assumed that this filter 55 is not backwashed and is replaced with a new filter 55 after processing a predetermined amount of water or when clogging occurs.

In the description so far, an example in which two cartridge-type filters 55 are provided as shown in FIG.
Since the groundwater purifying apparatus 1 of this embodiment is further provided with water taps 17 and 18, the connecting pipe 96 is branched into three or four to form a third filter or a fourth filter (not shown in FIG. 7). Filters may be provided and the outlet side of these filters may be connected to the water taps 17,18.
By providing three or four cartridge-type filters 55, membrane-filtered water that has passed through the individual cartridge-type filters 55 can be supplied to the water taps 17 and 18, respectively. The number of water taps to be provided may be any number such as one or more or two or more according to the required amount of water supply and the scale of the groundwater purifier 1 .

Next, an example of the arrangement state of each device in the internal structure of the groundwater purification apparatus 1 will be described.
3 to 6 and 8 to 10, as can be seen from various directions through the inside of the groundwater purification apparatus 1, a sand filtration tower is located on the rear side of the central portion of the groundwater purification apparatus 1. 53 is installed, and a chemical liquid tank 54 and an auxiliary tank 59 are installed on the left side of the sand filtration tower 53 when viewed from the front side. Cartridge-type filters 55 and 55 are installed in the upper front side from the installation positions of the chemical liquid tank 54 and the auxiliary tank 59 in the groundwater purifier 1 . A well pump 51 is installed on the lower side of these filters 55 , 55 and on the left front side of the groundwater purifier 1 . In the groundwater purifier 1, a control panel 56 and a power switching panel 57 are installed on the upper right side of the installation position of the sand filter tower 53, and an optional generator 58 is installed below them. As shown in FIGS. 6 and 8 , the generator 58 has wheels 58A for running and moving at the bottom, and a slope member R or the like is arranged with respect to the container 5 so that the generator 58 can be taken in and out of the groundwater purification apparatus 1. It is configured. For the generator 58, for example, a generator dedicated to LP gas and having a rated output of about 100 V AC×22 A (2.2 VA) can be applied.

As shown in FIGS. 4 and 9, two support bars 100 and 101 are installed inside the bottom frame 2, and a sand filter tower 53 is attached so as to be supported by these support bars 100 and 101. ing. In the groundwater purifier 1, around the installation positions of the chemical tank 54 and the auxiliary tank 59, around the installation positions of the filters 55 and 55, and around the installation positions of the control panel 56, the power switching panel 57, and the generator 58, Each of these devices is supported in such a manner that it is directly or indirectly supported by each cross member or strut frame 3 .
Further, as shown in FIG. 7, the water supply pipe connecting portion 40, the drain pipe connecting portion 41, the connecting pipe 65, the branch pipe 67, the first drain pipe 82, the second The drain pipe 83, the branch pipe 90, the water supply pipe 93, the connection pipe 96, etc. are arranged so as to pass through any one of the empty spaces in the internal space of the container 5, and are connected as shown in FIG. .

In the groundwater purifier 1 , the power switching board 57 is electrically connected to the control board 56 . The power switching board 57 can be connected to any power source such as a commercial power source (household power source), an electric vehicle, a diesel generator, an LP gas generator, a solar power generator, and a wind power generator. . In response to the voltage supply from these various power sources, the power switching board 57 supplies power such as AC 100 V 50/60 Hz to the control board 56 . The control panel 56 has a function of supplying electric power for driving the well pump 51, the backwash pump 52, the chemical injection pump 77, etc. to these pumps and controlling the driving of each pump. The control panel 56 is electrically connected to the butterfly valve 71, butterfly valve 75, butterfly valve 88, butterfly valve 91, butterfly valve 93A, switching valve 95, and butterfly valve 97, all of which are electrically operated. It has a function to drive and control valves. In the example shown in the figure, a generator 58 is mounted, and by activating the generator 58 power can be supplied to the control panel 56 via the power switching panel 57 .

The groundwater purifying apparatus 1 configured as described above is mainly intended for shelters with a small water supply (less than 20 m ² /day) that do not correspond to dedicated water supply, schools and elderly facilities that correspond to welfare evacuation shelters. It is a device that is suitable for use in situations such as the rapid establishment of an emergency water supply lifeline for drinking water and domestic water in the event of a disaster.
The groundwater purifier 1 is loaded on a transport machine such as a truck, and transported and installed at the necessary installation location described above. A water supply pipe 61 is connected to the inside of the well 60 by using a well 60 provided near the installation place, and this water supply pipe 61 is connected to the water supply pipe connection part 40 . When the water level of the well 60 is low, it is preferable to install a submersible pump 62 inside the well 60 .

A power source that can be used in the environment where the groundwater purification device 1 is installed is connected to the power source switching board 57 . If the installation location is in an environment where a commercial power supply (household power supply) can be used, the commercial power supply (household power supply) can be connected, and if the commercial power supply (household power supply) cannot be used, it can be used even in that environment. Any power source that can supply single-phase 100 V, such as a storage battery power source, a solar power source, an electric vehicle power source, a diesel power source, or an LP gas power source, is connected. For example, if the inverter-type well pump 51 has a single-phase voltage of 100 V and a power of about 1500 W as described above, it can be driven by a solar power generator having a solar panel with an area of about 20 m ² .

In the configurations shown in FIGS. 3 to 6 and 8 to 10, since the generator 58 is provided, the generator 58 can be operated to supply power to each device through the control panel 56. FIG.
Water is pumped up from a well 60 by operating a well pump 51 according to a command from a control panel 56, and well water is supplied to a sand filtration tower 53 through a connecting pipe 65. The sand filtration tower 53 extracts iron contained in well water. Manganese is removed from the water supply pipe 93 to supply sand-filtered water as domestic water to the water supply pipe 19 . Further, the chemical solution injection pump 77 is operated to send the disinfecting chemical solution such as hypochlorous acid water contained in the chemical solution tank 54 to the connecting pipe 65 to disinfect the well water before reaching the sand filter tower 53. can be done.

In addition, the well pump 51 is operated according to a command from the control panel 56 to pump up water from the well 60 and pass it through the sand filter tower 53 to obtain sand-filtered water. Then, it is passed through the filter 55 to obtain membrane-filtered water. This membrane-filtered water can be sent to the water tap 15 or the water tap 16 via the water supply pipe 98 or the water supply pipe 99, and supplied to the user as drinking water from the water tap 15 or the water tap 16. The filter 55 can remove Cryptosporidium, germs, bacteria (Escherichia coli), and the like.
The supply of well water from the well pump 51 to the sand filter tower 53 through the connection pipe 65 and the water flow from the sand filtration tower 53 to the filter 55 through the water supply pipe 93 and the connection pipe 96 are controlled by butterfly valves 71 and 93A. , gate valve 95, and butterfly valve 97.

As described above, by installing the groundwater purifying apparatus 1 at a necessary place, well water can be used to supply sand-filtered water as domestic water and membrane-filtered water as drinking water. Since the groundwater purifying apparatus 1 of this embodiment is unitized by accommodating all necessary devices in the container 5, it can be easily transported, installed, and used at the required site. Further, when the groundwater purifier 1 is installed in an evacuation shelter without a well, it is possible to use water trucks, which are more in number than water trucks, to piston-transport the nearby groundwater of known raw water quality. Water supply is possible at the place.

After operating the groundwater purifier 1 for a predetermined period of time or while consuming a predetermined amount of water, the sand filter tower 53 is backwashed. In the case of the backwashing operation of the sand filter tower 53, the well pump 51 is operated by operating the control panel 56, the backwashing pump 52 is operated, the butterfly valves 71, 75, 88, 91, etc. are controlled, and the first Backwashing of the sand filter tower 53 becomes possible by discharging water to the drain pipe connection portion 41 through the drain pipe 82 and the second drain pipe 83 .
By operating the backwash pump 52 while operating the well pump 51, the backwash process can be performed with power saving.

In the groundwater purifier 1 of this embodiment, as an example, if the iron contained in the well water is less than 3 ppm, the sand filtration tower 53 applied in this embodiment can normally treat 1 t/hour of water. That is, the groundwater purifier 1 can be used with a water treatment amount of 1 t/hour or less.
If it is operated for 20 hours at this rate, 20 t/day will be processed. With this amount of water treatment, assuming that there are 1,000 evacuees in the evacuation center and each person uses 3 to 20 liters, the amount of emergency water supply for 10 days after the occurrence of the earthquake set by the Ministry of Land, Infrastructure, Transport and Tourism (3 to 20 liters / day).
Assuming that the sand filter tower 53 is made of FRP, for example, and has a size of 400 mm in diameter and 1375 mm in height, the above-mentioned water treatment capacity can be fully exhibited.
Also, when the water quality is 3 ppm iron (standard setting) or more, 0.5 t/h can be adequately treated. When the water quality is poor, the treatment amount can be reduced.

In the well pump 51 operating at single-phase 100V, when the piping configuration shown in FIG. 7 is adopted and water is sent to the sand filter tower 53 and the filter 55 for filtration, the above-described water supply amount can be sufficiently secured. Therefore, the groundwater purifier 1 of this embodiment has a purifying capacity of 1 t/hour when groundwater is used as the purifying capacity. In addition, if the well pump 51 satisfies the purification capacity of the scale described above, it is smaller than a large scale well pump and is of a scale that can be accommodated in the container 5 of the size described above. The groundwater purifying device 1 can be configured to be small and light, and has a feature that it can be easily transported and installed.
The well pump 51 is preferably of a single-phase 100V drive type or a three-phase 200V drive type as small as possible. For example, a single-phase 100V drive type is smaller and lighter than a three-phase 200V drive type, and if a pump capable of operating within 1500W is employed, electric power can be supplied from an electric vehicle or a solar power generator.

If both the sand filter tower 53 and the subsequent membrane filtration means are provided with a backwashing mechanism, a three-phase 200V drive type pump is required. If a three-phase 200V drive type pump is required, the size of the pump becomes large, making it difficult to downsize the apparatus. , and the groundwater purifier 1 of this embodiment can be miniaturized. In the groundwater purifier 1 of this embodiment, the inverter-type well pump 51 and the backwash pump 52 are separately divided into two pumps, and therefore single-phase 100V drive type pumps can be applied to both of them.
Since the well pump may require a large amount of power when starting, the cartridge type filter 55 is used as the membrane filtration means, the backwashing mechanism on the side of the membrane filtration means is omitted, and the backwashing function is limited to the sand filtration tower 53 only. By separately providing the inverter type well pump 51 and the backwash pump 52 as well pumps, single-phase 100V drive can be made possible. At the time of backwashing, by using the inverter type well pump 51 and the backwashing pump 52 together, the starting current can be suppressed and the operation can be performed with AC100V 1500W power supply.
Further, the cartridge type filter 55 can be discarded when it becomes dirty, so it can be easily replaced. In the groundwater purifier 1 of this embodiment, the combination of the sand filter tower 53 and the cartridge type filter 55 can reduce the overall size of the apparatus.

The filter 55 can be replaced as required after a predetermined period of time or a predetermined amount of water has been treated. This replacement work enables the preservation of the microfiltration membrane provided in the filter 55, and the filter 55 can be used in a clean state by replacing it when the membrane is clogged without backwashing. . Also, by omitting the backwashing mechanism for the filter 55, the groundwater purifier 1 can be downsized and the cost of the groundwater purifier 1 can be suppressed.

In the groundwater purifier 1 of the present embodiment, depending on the raw water quality of the groundwater, reverse osmosis membrane means (two 4-inch vessels of RO membrane: RO membrane) can be provided in the latter part of the filtration tower.
11 and 12 show a groundwater purifier 100 of a second embodiment according to the present invention, and this groundwater purifier 100 has a structure equivalent to that of the container 5 of the groundwater purifier 1 described above. 5 is provided with reverse osmosis membrane means 101, 101 having an RO membrane.
Except for the structure provided with the reverse osmosis membrane means 101, 101, the groundwater purification apparatus 100 of the second embodiment has substantially the same configuration as the groundwater purification apparatus 1 of the first embodiment.
In the groundwater purification apparatus 100, the reverse osmosis membrane means 101 employs a structure in which a reverse osmosis membrane is provided inside a cylindrical container.

11 and 12, the reverse osmosis membrane means 101 is installed horizontally below the ceiling frame 4 at a position where it does not interfere with the control panel 56 or the power switching panel 57. As shown in FIG. In the examples shown in these figures, the reverse osmosis membrane means 101, 101 are arranged adjacent to each other vertically.
The reverse osmosis membrane means 101, 101 can be connected to the water supply pipe 93 on the downstream side of the sand filtration tower 53 in the piping configuration shown in FIG. It can be provided in connection with the water tap 18 .
By providing the reverse osmosis membrane means 101, the RO treated water that has passed through the reverse osmosis means 101 can be used for drinking, and the reject water of the reverse osmosis means 101 can be used as domestic water.
In the example shown in FIGS. 11 and 12, the layout of each device arranged inside the housing body 5 is slightly changed to secure a space for housing the reverse osmosis membrane means 101 . For example, the control panel 57 is arranged above the well pump 51 and not interfering with the reverse osmosis membrane means 101 , 101 . However, the arrangement of each device shown in the figure is merely an example, and the arrangement of each device is not particularly limited as long as the necessary devices are arranged inside the container 5 .

By adding a hot water shower unit to the groundwater purifier 1 described above, it is possible to supply hot water as a shower, so that users at disaster sites or the like can shower and wash with clean hot water.
Further, the groundwater purifying apparatus 1 is mainly used to supply sand-filtered water as domestic wastewater from the water supply pipe 19, and the membrane-filtered water obtained through the filter 55 is used only when necessary. good.

DESCRIPTION OF SYMBOLS 1... Underground water purification apparatus, 5... Container, 15, 16... Water tap, 19... Water supply pipe, 40... Water supply pipe connection part, 51... Well pump (water supply pump), 52... Backwash pump, 53... Sand filter tower (Sand filtering means) 54 Chemical liquid tank (chemical adding means) 55 Filter (membrane filtering means) 60 Well (ground water source) 61 Water supply pipe 65 Connecting pipe 66 Inlet 68 Outlet portion 77... Chemical solution injection pump (chemical adding means) 82... First drain pipe 83... Second drain pipe 100... Underground water purification device 101... Reverse osmosis membrane means.

Claims (7)

A unit-type groundwater purifier comprising a water supply pump connectable to an underground water source or a well tank via a water supply pipe, chemical addition means, sand filtration means, and membrane filtration means inside a transportable container. , the groundwater purification apparatus, wherein the water pump is a pump that operates at a single-phase 100V. 2. The groundwater purifier according to claim 1, further comprising a backwash pump for said sand filtering means, said backwash pump being a single-phase 100V pump. 3. The groundwater purifier according to claim 1, wherein said membrane filtration means is a microfiltration membrane. The groundwater purifier according to any one of claims 1 to 3, wherein said membrane filtration means is a cartridge membrane. The groundwater purifier according to any one of claims 1 to 4, further comprising reverse osmosis membrane means after said membrane filtration means. The groundwater purifier according to any one of claims 1 to 5, wherein the groundwater purifier has a purification capacity of 1 t/hour or less. Any one or more selected from the group consisting of a household power supply, an electric vehicle, a diesel generator, an LP gas generator, a solar generator, and a wind power generator, as the power supply source for the water pump and/or the backwash pump. The groundwater purifier according to any one of claims 1 to 6, wherein

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