Purification treatment apparatus

Abstract

To provide a purification treatment apparatus capable of rapidly purifying a liquid to be treated at a low cost and with high efficiency without requiring a large amount of thermal energy.SOLUTION: A purification treatment apparatus includes a plurality of purification treatment tanks 3 to 5 arranged adjacent to each other, and connecting pipes 14, 15 installed so as to span between one purification treatment tank and the other purification treatment tank adjacent to each other, a suction material 16 disposed within the connecting pipes 14, 15 such that at least one end is immersed in the liquid to be treated at the top of one purification tank, thereby drawing the liquid to be treated from one purification tank via capillary action through the one end, and a siphon pipe 18 that directs the liquid to be treated overflowing from the suction material 16 to the bottom of the other purification tank.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a purification treatment device for purifying a liquid to be treated, such as contaminated water containing impurities or waste oil. [Background technology]

[0002] Conventionally, a seawater boiling method has been known as a method for desalinating seawater, in which seawater supplied to a boiler section is boiled to generate steam, which is collected in a steam recovery section and used to drive a steam turbine. The steam is then passed through a condenser and cooled with seawater to be recovered and used as pure water (see Patent Document 1).

[0003] The inventor has also proposed a freshwater generating device comprising: a first storage tank containing a storage liquid (liquid to be treated); a first absorbent substrate whose lower end is immersed in the storage liquid in the first storage tank; an air blowing means for blowing air toward the upper end side of the first absorbent substrate; a second absorbent substrate in which the air blown by the air blowing means adsorbs and condenses water vapor evaporated and blown out from the upper end side of the first absorbent substrate at the upper end side, causing the condensed water droplets to fall from the lower end side; a second storage tank in which condensed water dripping from the lower end side of the second absorbent substrate is stored; a lid body for sealing the upper spaces of the first and second storage tanks; and a conduit whose one end is connected to the upper space of the second storage tank of the lid body and exhausts the air blown from the air blowing means, and whose other end is connected to the upper space of the first storage tank and communicates with the intake side of the air blowing means to form a circulation path for the air blown (see Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-62513 [Patent Document 2] Patent No. 6391698 Summary of the Invention [Problem to be solved by the invention]

[0005] The seawater boiling method disclosed in Patent Document 1 can produce highly pure purified water by boiling seawater supplied to a boiler section to generate steam, and then cooling and liquefying the steam. However, a large amount of thermal energy is required to boil the liquid being treated, and the cost of purifying the liquid being treated is inevitably extremely high.

[0006] On the other hand, the fresh water generating device disclosed in Patent Document 2 is capable of generating fresh water by vaporizing the liquid to be treated without boiling it. However, the device is configured so that the moisture that has penetrated the first water-absorbing substrate is sequentially vaporized by air blown by an air blowing means, and is sent out as water vapor, which is then condensed and falls as water droplets, and there is a problem that it takes a long time to purify a large amount of the liquid to be treated because the vaporization efficiency and liquefaction efficiency of the liquid to be treated are low.

[0007] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a purification treatment device that can quickly purify the liquid to be treated at low cost and with high efficiency without requiring a large amount of thermal energy. [Means for solving the problem]

[0008] The present invention provides a purification treatment device comprising a plurality of septic tanks arranged adjacent to each other, and a connecting pipeline installed so as to span between one of the adjacent septic tanks and the other of the adjacent septic tanks, wherein the connecting pipeline is provided with a suction material arranged so that at least one end thereof is immersed in the liquid to be treated contained in one of the septic tanks, and which sucks up the liquid to be treated in one of the septic tanks from the one end by capillary action, and a siphon pipeline which directs the liquid to be treated that overflows from the suction material to the bottom of the other septic tank.

[0009] Here, it is preferable that the pretreatment tank containing the liquid to be treated is positioned adjacent to the first purification treatment tank, which is set at the highest liquid level position in the purification treatment tank, and that a partition wall is provided to separate the upper parts of the pretreatment tank and the first purification treatment tank, and that an opening is provided at the lower end of the partition wall to connect the pretreatment tank and the first purification treatment tank.

[0010] Here, it is preferable that a discharge pipe is provided for discharging the floating liquid that has risen to the liquid surface in the pretreatment tank to the outside.

[0011] Here, it is preferable that each of the septic tanks is provided with a discharge pipe for adjusting the liquid level in the tank.

[0012] Here, it is preferable that the connecting pipeline has a porous body that constitutes the suction material and an outer tube that covers its outer periphery, and that a gap that forms the siphon pipeline is provided between the outer tube and the porous body.

[0013] Here, the system may be configured to include a pressurizing means for pressurizing the liquid surface of the liquid to be treated contained in at least the first purification treatment tank.

[0014] Here, the system may be configured to include a supply pipe for supplying the treated liquid drawn out from the purification treatment tank to the heat exhaust tower as a coolant.

[0015] Here, it is preferable to provide an air exhaust means for exhausting air from within the connecting pipe line to the outside, thereby filling the connecting pipe line with the liquid to be treated.

[0016] Here, it is preferable that the air exhaust means is configured by a suction pump that sucks air from within the connecting pipe line and exhausts it to the outside. [Effects of the Invention]

[0017] The present invention utilizes a suction function for the treated liquid using capillary action through a suction material installed in the connecting pipeline, and a transport function for the treated liquid using the siphon principle through a siphon pipeline, thereby preventing impurities that have settled at the bottom of each purification treatment tank from being sucked up into the connecting pipeline, and quickly transports the supernatant liquid of the treated liquid contained in a purification treatment tank located upstream in the direction of transport of the treated liquid through the connecting pipeline to a purification treatment tank located downstream in the direction of transport of the treated liquid, thereby enabling the treated liquid to be quickly purified with a simple configuration without using thermal energy, etc., to boil the treated liquid as in conventional technology.

[0018] Furthermore, a partition wall is provided to separate the upper part of the pretreatment tank from the first purification treatment tank located adjacent to it, and an opening is provided at the lower end of the partition wall to connect the pretreatment tank to the purification treatment tank.If the liquid to be treated supplied to the pretreatment tank contains oil or other substances with a specific gravity lighter than water, the partition wall can prevent the oil or other substances from being transported toward the first purification treatment tank, while the liquid to be treated located lower in the pretreatment tank can be quickly supplied to the first purification treatment tank.

[0019] Furthermore, by configuring the system so that the floating liquid consisting of oil and other substances floating on the liquid surface of the treatment tank is discharged to the outside, it is possible to more effectively prevent the oil and other substances from being transferred from the pretreatment tank to the first purification treatment tank, and it has the advantage that the oil and other substances discharged to the outside via the discharge pipeline can be recovered and reused.

[0020] Furthermore, if each septic tank is provided with a discharge pipe that adjusts the liquid level in that tank, the liquid level in the upstream septic tank can be automatically adjusted so that it is higher than the downstream tank, thereby allowing the liquid to be treated on the upstream side to be guided downstream via the siphon pipe.

[0021] Furthermore, if the connecting pipeline has a porous body that constitutes the suction material and an outer tube that covers its outer periphery, and a gap that forms a siphon pipeline is provided between the outer tube and the porous body, the suction material is protected by the outer tube and air is prevented from entering the connecting pipeline, while the suction function of the suction material utilizes capillary action to suction the treated liquid and the siphon pipeline's function of transporting the treated liquid utilizing the siphon principle allows the treated liquid to be quickly guided from the upstream side to the downstream side.

[0022] Furthermore, if the configuration is equipped with a pressurizing means for pressurizing the liquid surface of the liquid to be treated contained in at least the first purification treatment tank, impurities contained in the liquid to be treated in the first purification treatment tank can be quickly settled, and the liquid to be treated can be effectively sent into one end of the connecting pipe immersed in the first purification treatment tank.Therefore, the supernatant liquid located at the top of each purification treatment tank can be sent into the connecting pipe and efficiently guided downstream in sequence, thereby more quickly purifying the liquid to be treated.

[0023] In addition, if the configuration includes a supply pipeline that supplies the treated liquid extracted from the purification treatment tank to the heat exhaust tower, heat exchange is performed using the treated liquid in the heat exhaust tower, and the treated liquid after heat exchange can be used as domestic water, etc. as needed.

[0024] Furthermore, by providing an air exhaust means for exhausting the air in the connecting pipe to the outside and filling the connecting pipe with the liquid to be treated, the connecting pipe can be quickly filled with the liquid to be treated at the beginning of operation of the purification treatment device, without relying solely on capillary action utilizing the pores and gaps in the suction material placed in the connecting pipe, and the connecting pipe can be made to function as a siphon pipe early on, making it possible to operate the purification treatment device of the present invention quickly.

[0025] Furthermore, if the device is equipped with an air exhaust means consisting of a suction pump that sucks air from the connecting pipe and exhausts it to the outside, the connecting pipe can be easily and quickly filled with the liquid to be treated, allowing the connecting pipe to function as a siphon pipe early on, making it possible to operate the purification treatment device of the present invention more quickly. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is an explanatory diagram showing the overall configuration of a purification treatment device according to an embodiment of the present invention; [Figure 2] Cross-sectional view of line II-II in Figure 1. [Figure 3] FIG. 10 is a perspective view showing another embodiment of the purification treatment device according to the present invention. [Figure 4] FIG. 4 is an enlarged perspective view of a part of FIG. 3. [Figure 5] FIG. 10 is an explanatory diagram showing still another embodiment of the purification treatment device according to the present invention. [Figure 6] FIG. 10 is an explanatory diagram showing still another embodiment of the purification treatment device according to the present invention. [Figure 7] FIG. 10 is an explanatory diagram showing still another embodiment of the purification treatment device according to the present invention. [Figure 8] FIG. 10 is an explanatory diagram showing still another embodiment of the purification treatment device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] As shown in FIG. 1, the purification treatment device according to an embodiment of the present invention comprises a supply pipeline 1 for supplying a liquid A to be treated, which may be industrial wastewater containing precious metals for plating, contaminated water containing impurities such as sludge, or various oils such as waste oil; a pretreatment tank 2 for accommodating the liquid A to be treated supplied via the supply pipeline 1; a first purification treatment tank 3 arranged adjacent to the pretreatment tank 2; a second purification treatment tank 4 arranged adjacent to the first purification treatment tank 3; and a third purification treatment tank 5 arranged adjacent to the second purification treatment tank 4.

[0028] A discharge pipe 6 is provided near the top of the pretreatment tank 2, which discharges the floating liquid that floats on the liquid level A1 of the liquid to be treated A to the outside. A partition wall 7 is provided between the pretreatment tank 2 and the adjacent first purification tank 3, separating the two, and an opening 8 is provided at the bottom of the partition wall 7, connecting the pretreatment tank 2 and the first purification tank 3. The partition wall 7 prevents the liquid to be treated A located at the top of the pretreatment tank 2 from moving toward the first purification tank 3, while allowing the liquid to be treated A located near the bottom of the pretreatment tank 2 to move toward the first purification tank 3 via the opening 8.

[0029] Between the first purification treatment tank 3 and the adjacent second purification treatment tank 4, a partition wall 9 is provided to partition the entire area from the upper end to the other end and to restrict the movement of the liquid to be treated B. In addition, near the top of the first purification treatment tank 3, a first discharge pipe 10 is provided at approximately the same height as the discharge pipe 6 of the pretreatment tank 2, for discharging the liquid to be treated B contained therein to the outside.

[0030] Between the second purification tank 4 and the adjacent third purification tank 5, a partition wall 11 is provided to partition the entire area from its upper end to the other end and to restrict the movement of the liquid C to be treated. In addition, the second purification tank 4 has a second discharge pipe 12 for discharging the liquid C to be treated stored therein, which is located at a lower position than the first discharge pipe 10 of the first purification tank 3, thereby adjusting the liquid level C1 in the second purification tank 4 to a lower position than the liquid level B1 in the first purification tank 3. Furthermore, the third purification tank 5 has a third discharge pipe 13 for discharging the supernatant liquid of the treated liquid D stored therein to the outside, which is located at a lower position than the second discharge pipe 12 of the second purification tank 4, thereby adjusting the liquid level D1 in the third purification tank 5 to a lower position than the liquid level C1 in the second purification tank 4.

[0031] An inverted U-shaped first connecting pipe 14 is installed between the first septic tank 3 and the second septic tank 4, spanning both tanks. One end of the first connecting pipe 14 located on the first septic tank 3 side is located at an upper part of the first septic tank 3 at a position lower than the first discharge pipe 10, preferably at a position slightly lower than the first discharge pipe 10. The other end of the first connecting pipe 14 located on the second septic tank 4 side is located at a position lower than the second discharge pipe 12, preferably at a position close to the bottom of the second septic tank 4.

[0032] An inverted U-shaped second connecting pipe 15 is installed between the second septic tank 4 and the third septic tank 5, spanning both tanks. One end of the second connecting pipe 15 located on the second septic tank 4 side is located at a position slightly lower than the second discharge pipe 12. The other end of the second connecting pipe 15 located on the third septic tank 5 side is located at a position lower than the third discharge pipe 13, preferably close to the bottom of the third septic tank 5.

[0033] As shown in Figure 2, the first connecting pipe 14 and the second connecting pipe 15 each have a suction material 16 that draws up the liquid to be treated by capillary action and an outer tube 17 that covers the outer periphery of the suction material 16. The suction material 16 is made of a porous material such as synthetic zeolite or nanocarbon, with numerous pores and gaps formed therein. The outer tube 17 is made of a cylindrical material such as metal or plastic, which prevents air from entering the interior and protects the suction material 16 placed inside. The diameter of the suction material 16 is smaller than the inner diameter of the outer tube 17, leaving a gap between the suction material 16 and the outer tube 17 that serves as a siphon pipe 18, which will be described later.

[0034] In the above-described configuration, when a liquid A to be treated, such as contaminated water, is supplied into the pretreatment tank 2 via the supply pipe 1, the liquid A is supplied to the first purification tank 3 via an opening 8 provided at the lower end of the partition wall 7, and is stored as a liquid B to be treated. As shown in FIG. 1 , when the liquid levels A1 in the pretreatment tank 2 and B1 in the first purification tank 3 rise to the locations of the discharge pipes 6 and 10, respectively, the liquids A and B to be treated are discharged to the outside via the discharge pipes 6 and 10. In this way, when one end of the first connecting pipe 14 is immersed in the liquid B to be treated in the first purification tank 3, the liquid B located at the top of the first purification tank 3 permeates the pores and gaps of the suction material 16 disposed in the first connecting pipe 14 and is sucked up into the one end of the first connecting pipe 14 by capillary action.

[0035] The liquid B to be treated that has been sucked up to the top of the first connecting pipe 14 by the suction material 16 is gradually transferred toward the other end of the first connecting pipe 14 located on the second purification treatment tank 4 side, and drips into the second purification treatment tank 4 due to gravity. Furthermore, a portion of the liquid B to be treated that has permeated the pores and gaps of the suction material 16 overflows into the siphon pipe 18 provided between the surface of the suction material 16 and the outer tube 17, and flows so as to discharge the air in the siphon pipe 18 downstream (towards the second purification treatment tank 4). Then, when almost all of the air present in the gap between the suction material 16 and the outer tube 17 has been discharged to the outside, the gap functions as the siphon pipe 18, and the transfer of the liquid to be treated B from the first purification treatment tank 3 to the second purification treatment tank 4 begins.

[0036] Similarly, the liquid C to be treated that has been transferred to and stored in the second purification treatment tank 4 is quickly transferred to the third purification treatment tank 5 and stored as treated liquid D by the suction function of the suction material 16 disposed in the second connecting pipe 15, which utilizes capillary action, and the transfer function of the liquid C to be treated that utilizes the siphon principle of the siphon pipe 18 formed by the gap between the suction material 16 and the outer tube 17. The number of purification treatment tanks 3 to 5 is not limited to three, but may be two, or four or more.

[0037] According to the purification treatment device of the present invention, which comprises a plurality of septic tanks 3 to 5 arranged adjacent to each other, and connecting pipes 14, 15 installed so as to span between one adjacent septic tank and the other, and which is provided with a suction material 16 arranged so that at least one end of the connecting pipes 14, 15 is immersed in the upper part of the liquid to be treated contained in one of the septic tanks and which sucks up the liquid to be treated from one of the septic tanks from one end by capillary action, and a siphon pipe 18 which directs the liquid to be treated that overflows from the suction material 16 to the lower part of the other septic tank, it is possible to quickly purify the liquid to be treated at low cost and with high efficiency without requiring a large amount of thermal energy.

[0038] That is, if the liquid to be treated B transferred from the pretreatment tank 2 to the first purification tank 3 contains impurities with a specific gravity heavier than water, such as precious metals discharged from a plating factory or the like, or sludge, the impurities will settle in the lower part of the first purification tank 3. In the present invention, one end of the first connecting pipe 14 located in the upstream first purification tank 3 is located above the first purification tank 3 at a position lower than the first discharge pipe 10, so that the supernatant liquid of the liquid to be treated B located above the first purification tank 3 can be guided downstream to the second purification tank 4 on the downstream side while preventing the sediment below from being sucked up into the first connecting pipe 14. Similarly, the supernatant liquid of the liquid to be treated C contained in the second purification tank 4 can be guided downstream to the third purification tank 5 on the downstream side via the second connecting pipe 15.

[0039] The siphon pipes 18 of the connecting pipes 14 and 15 are filled with the liquid to be treated by utilizing capillary action through the suction material 16 installed in the connecting pipes 14 and 15, thereby allowing the liquid to be transported downstream using the siphon principle. This allows the supernatant liquid in each septic tank to be sequentially transported downstream at a significantly faster rate than when relying solely on capillary action. This allows for rapid, stepwise purification of the liquid without the need for thermal energy to boil the liquid, as in the prior art. Furthermore, the siphon pipes 18 can transport the liquid to be treated without the need for a pump to pump the liquid into the connecting pipes 14 and 15 or a discharge pump to draw air into the connecting pipes 14 and 15 and discharge it to the outside, thereby simplifying the structure of the purification treatment device.

[0040] In order to utilize the siphon principle of the siphon pipe 18 provided in the connecting pipes 14, 15 to transfer the treated liquid, it is a necessary and sufficient condition that the other end of the connecting pipes 14, 15 located in the downstream septic tank be positioned lower than one end of the connecting pipes 14, 15. However, as shown in the above-described embodiment, when the other end of the connecting pipes 14, 15 is positioned near the bottom of the downstream septic tank, it is possible to prevent air from entering the other end of the connecting pipes 14, 15 as much as possible, which has the advantage of enabling stable transfer of the treated liquid using the siphon pipe 18.

[0041] In the above-described embodiment, the pretreatment tank 2, which contains the liquid A to be treated supplied from the supply pipe 1, is installed adjacent to the first purification tank 3, which is set at the position where the height of the liquid level B1 is the highest among the multiple purification tanks 3 to 5, and a partition wall 7 is provided to separate the upper parts of the pretreatment tank 2 and the first purification tank 3, and an opening 8 is provided at the lower end of the partition wall 7 to communicate between the pretreatment tank 2 and the first purification tank 3. With this configuration, when the liquid A to be treated supplied from the supply pipe 1 into the pretreatment tank 2 contains oil or the like having a specific gravity lighter than water, the partition wall 7 prevents the oil or the like from being transferred to the first purification tank 3, and the liquid A to be treated located lower in the pretreatment tank 2 can be quickly supplied to the first purification tank 3.

[0042] It is also possible to omit the pretreatment tank 2 and directly supply the liquid A to be treated into the first purification tank 3. However, as shown in the above-described embodiment, if the pretreatment tank 2 is provided and a floating liquid consisting of oil and other components floating on the liquid surface A1 of the liquid A to be treated is discharged to the outside via the discharge pipe 6, the oil and other components can be effectively prevented from being transferred from the pretreatment tank 2 to the first purification tank 3. The oil and other components discharged to the outside of the pretreatment tank 2 via the discharge pipe 6 are used as fuel or disposed of. On the other hand, if the impurities that have settled at the bottom of the first purification tank 3 and the second purification tank 4 are precious metals or the like, it is desirable to remove them to the outside when the concentration of the precious metals or the like reaches a certain level, thereby making effective use of them.

[0043] In the above-described embodiment, the discharge pipes 10, 12, and 13 installed in the septic tanks 3-5 are installed at different heights to adjust the liquid levels B1 and C1 of the treated liquid B and C and the liquid level D1 of the treated liquid D stored in the septic tanks 3-5. This configuration automatically adjusts the liquid levels so that the liquid level in the upstream septic tank is higher than that in the downstream tank, thereby allowing the upstream liquid to be guided downstream via the siphon pipe 18. If the supernatant liquid discharged from the first discharge pipe 10 installed in the first septic tank 3, the second discharge pipe 12 installed in the second septic tank 4, and the third discharge pipe 13 installed in the third septic tank 5 contains oil or other substances, it can be recovered and reused or disposed of, thereby preventing the oil or other substances from being transported downstream.

[0044] In the above-described embodiment, the first connecting pipeline 14 and the second connecting pipeline 15 are provided with a suction material 16 made of a porous material such as synthetic zeolite or nanocarbon, an outer tube 17 covering the outer periphery of the suction material, and a gap serving as a siphon pipeline 18 between the outer tube 17 and the suction material 16. This configuration protects the suction material 16 with the outer tube 17 and prevents air from entering the connecting pipelines 14 and 15, while enabling the upstream treated liquid to be quickly transferred to the downstream side. Note that instead of the suction material 16 made of synthetic zeolite or nanocarbon, a suction material made of fabric or string-like material having the function of suctioning the liquid to be treated may be disposed in the outer tube 17, and a gap serving as a siphon pipeline may be provided between the suction material and the outer tube 17.

[0045] 3 and 4 show another embodiment of the purification treatment device according to the present invention. The connecting pipelines 14 and 15 used in this embodiment include a honeycomb-structured suction material 20 consisting of an aggregate of approximately regular hexagonal pillars 21 made of a porous material such as synthetic zeolite or nanocarbon, a siphon tube consisting of gaps 22 formed between the pillars 21, and a sheet material 23 made of a plastic film or the like that airtightly seals the outer periphery of the suction material 20. This configuration allows the liquid to be treated to efficiently permeate into the pillars 21 via the gaps 22 formed between the pillars 21, and allows the gaps 22 to function as siphon pipelines, thereby enabling the liquid to be treated to be rapidly transported.

[0046] Instead of using a sheet material 23 to cover the outer periphery of the suction material 20, a structure may be used in which the suction material 20 is made up of an assembly of numerous pillars 21 packed into an outer tube that has the function of preventing air from entering and protecting the suction material 20. Also, as shown in Figure 4, a configuration may be used in which a through hole 24 that serves as a siphon conduit is provided in the center of each pillar 21. In this case, it is possible to omit the gaps 22 between the pillars 21.

[0047] The suction material 16 may be made of synthetic zeolite, nanocarbon, cloth, string-like bodies, or the like, and may be impregnated with an impurity remover such as activated carbon that adsorbs and removes impurities from the treated liquids B and C flowing through the connecting pipes 14 and 15. For example, powdered activated carbon to which water has been added may be kneaded into the string-like bodies that make up the suction material 16 and then dried, thereby giving the suction material 16 the ability to filter impurities. With this configuration, impurities in the treated liquids B and C passing through the connecting pipes 14 and 15 can be adsorbed by the activated carbon and removed, thereby more effectively purifying the treated liquids B and C.

[0048] FIG. 5 shows yet another embodiment of the purification treatment device according to the present invention. This embodiment includes a pressurizing means 30 that pressurizes the liquid level B1 of the liquid B contained in the first purification treatment tank 3 and the liquid level C1 of the liquid C contained in the second purification treatment tank 4. The pressurizing means 30 includes a blower 31 and an air pipe 32 that blow air into the first purification treatment tank 3 and the second purification treatment tank 4, and is configured to pressurize the liquid levels B1 and C1 of the liquid B and C downward by wind pressure. This configuration allows impurities contained in the liquid B contained in the first purification treatment tank 3 and the liquid C contained in the second purification treatment tank 4 to quickly settle. Furthermore, because the liquids B and C can be effectively fed into the first connecting pipe 14 and the second connecting pipe 15, the supernatant liquid at the top of each purification treatment tank can be efficiently transferred downstream via the first connecting pipe 14 and the second connecting pipe 15. Instead of the above-described embodiment in which both liquid levels B1, C1 of the liquids B, C to be treated are pressurized downward, it is also possible to configure the system so that only the liquid level B1 in the first purification treatment tank 3 is pressurized downward.

[0049] 6 shows yet another embodiment of the purification treatment device according to the present invention. This embodiment has an intermediate storage tank 33 provided between the first purification treatment tank 3 and the second purification treatment tank 4, an opening 41 for transferring the liquid to be treated provided at the upper end of the partition wall 34 located between the first purification treatment tank 3 and the intermediate storage tank 33, an opening 42 for transferring the liquid to be treated provided at the lower end of the partition wall 9 located between the intermediate storage tank 33 and the second purification treatment tank 4, activated carbon 43 for adsorbing sediment and a discharge pipe 44 for removing sludge are provided at the bottom of the first purification treatment tank 3, and 1 in that an inclined plate 45 for guiding sediment, etc. is provided at the bottom of the pretreatment tank 2 and the first purification treatment tank 3, activated carbon 46 for adsorbing sediment and a discharge pipe 47 for removing sludge are provided at the bottom of the second purification treatment tank 4, and inclined plates 48 for guiding sediment, etc. toward the activated carbon 46 and discharge pipe 47 are provided at the bottom of the intermediate storage tank 33 and the second purification treatment tank 4, and a supply pipe 51 is provided to supply the treated liquid D to a heat exhaust tower 50 provided in a factory, etc. as a coolant for heat exchange.

[0050] The pretreatment tank 2 is provided with a liquid level detector 49 equipped with a float or the like for detecting the liquid level A1 of the liquid to be treated A, and the amount of the liquid A to be treated supplied from the supply pipe 1 is adjusted according to the detection value of the liquid level detector 49, thereby maintaining the liquid level A1 in the pretreatment tank 2 and the liquid level B1 in the first purification treatment tank 3 at a constant height. In addition, a supply pipe 51 for supplying treated liquid D to the heat exhaust tower 50 is provided on the side wall of the third purification treatment tank 5, and a control valve 52 is provided in the supply pipe 51 for opening and closing the supply pipe 51 as necessary and for switching the discharge direction of the treated liquid D between the heat exhaust tower 50 side and the discharge pipe 53 side.

[0051] The heat exhaust tower 50 corresponds to the cooling tower of the fresh water generation apparatus disclosed in, for example, JP 2022-179855 A, and has the function of supplying the treated liquid D supplied to the heat exhaust tower 50 via a supply pipe 51 to a carbonization-to-oil apparatus (not shown), an air conditioner, a refrigeration device, etc., to cool these. The water vapor E generated by heat exchange with the purified treated liquid D in the heat exhaust tower 50 is supplied to a condenser 55 through an outlet pipe 54, and is liquefied by being cooled in the condenser 55, and then used as domestic water, etc.

[0052] In the embodiment shown in FIG. 6, the liquid to be treated A, which is made of polluted river water or the like, is supplied into the pretreatment tank 2 through the supply pipe 1 and is discharged from the lower end of the partition wall 7 toward the first septic tank 3. As shown in FIG. 1, when the liquid level B1 in the first septic tank 3 rises to the upper end of the partition wall 34, the liquid to be treated B is transferred from the upper end of the partition wall 34 to the intermediate storage tank 33 and stored therein, and is then supplied to the second septic tank 4 through an opening 42 provided at the lower end of the partition wall 9. During this process, sediments, sludge, and the like that have settled below the liquids to be treated A, B, and C are guided by inclined plates 45 and 48, adsorbed by activated carbon 43 and 46, and appropriately discharged to the outside through the discharge pipe 44. This prevents the sludge and the like from being discharged downstream and suppresses the accumulation of contaminants inside the first septic tank 3 and the second septic tank 4.

[0053] When one end of the connecting pipe 15, located in the vertical middle of the second purification tank 4, is immersed in the liquid C to be treated, the liquid C penetrates the pores and gaps of the suction material 16 disposed within the connecting pipe 15 and is sucked up into the one end of the connecting pipe 15 by capillary action. The liquid C sucked up to the top of the connecting pipe 15 by the suction material 16 is gradually transported toward the other end of the connecting pipe 15 located on the third purification tank 5 side, and drips into the third purification tank 5 due to gravity. In this way, the liquid C to be treated is rapidly transported from the second purification tank 4 to the third purification tank 5 via the siphon pipe provided in the connecting pipe 15. Furthermore, by allowing impurities in the liquid C to be adsorbed by an impurity remover such as activated carbon impregnated in the suction material 16 contained within the connecting pipe 15, a treated liquid D with a higher purity can be supplied to the heat exhaust tower 50.

[0054] The treated liquid D is supplied to the heat exhaust tower 50 and vaporized by heat exchange, and is then cooled and liquefied in the condenser 55, after which it can be safely used as domestic water, etc. When the treated liquid D in the third purification treatment tank 5 is to be used as industrial water that does not require heat treatment, the control valve 52 is operated to switch the discharge direction of the treated liquid D to the discharge pipe line 53 side, so that the treated liquid D can be quickly supplied to the required location.

[0055] FIG. 7 illustrates yet another embodiment of the purification treatment device according to the present invention. This embodiment differs from the embodiment shown in FIG. 6 in that an air exhaust means 61, such as a manual pump, is provided in the inverted U-shaped second connecting pipe 15, which is installed between the second purification treatment tank 4 and the third purification treatment tank 5. In this embodiment, the air exhaust means 61 is used to suck air from the second connecting pipe 15 and exhaust it to the outside at the beginning of operation of the purification treatment device, thereby quickly filling the second connecting pipe 15 with the liquid to be treated C. Therefore, at the beginning of operation of the purification treatment device, the connecting pipe 15 can function as a siphon pipe early without relying solely on capillary action utilizing the pores and gaps of the suction material 16 disposed within the connecting pipe 15, thereby enabling the purification treatment device according to the present invention to operate quickly. Although an electric pump can be used as the air exhaust means 61, it is preferable to use a manual pump, which does not require a power source, as the air exhaust means 61 when the purification treatment device according to the present invention is installed outdoors to purify polluted water from rivers, etc.

[0056] Fig. 8 shows yet another embodiment of the purification treatment device according to the present invention. This embodiment differs from the embodiments shown in Fig. 6 and Fig. 7 in that the upper end of the second connecting pipe 15a connecting the second purification treatment tank 4 and the third purification treatment tank 5 is located inside the second purification treatment tank 4 and the third purification treatment tank 5, and that an on-off valve (not shown) is provided in the second discharge pipe 12 that discharges the liquid C to be treated contained in the second purification treatment tank 4 to the outside.

[0057] In the embodiment shown in FIG. 8 , by closing the open / close valve (not shown) provided in the second discharge pipe 12 at the beginning of operation of the purification treatment device, the liquid level C2 of the liquid C contained in the second purification treatment tank 4 can be positioned above the upper end of the second connecting pipe 15. By immersing the upper end of the second connecting pipe 15 in the liquid C in this manner, air within the connecting pipe 15 can be discharged to the outside, allowing the liquid C to quickly fill the connecting pipe 15. Thereafter, by opening the open / close valve of the second discharge pipe 12 and positioning the liquid level C1 of the liquid C below the upper end of the second connecting pipe 15, the connecting pipe 15 can quickly function as a siphon pipe. Therefore, the purification treatment device of the present invention can be quickly operated without providing a manual pump, electric pump, or the like for sucking air from the connecting pipe 15. [Explanation of symbols]

[0058] 1 Supply line 2 Pretreatment tank 3. First purification treatment tank 4 Second purification treatment tank 5. Third purification tank 6 Discharge pipe 7 Compartment Wall 8 Openings 9 Compartment Wall 10 First discharge pipe 11 Compartment Wall 12 Second discharge pipe 13 Third discharge pipe 14 First connecting pipe 15 Second connecting pipe 16 Absorbing material 17 Outer tube 18 Siphon Pipe 21 Columnar body 22 Gap 23 Sheet material 24 Through hole 30 Pressurizing means 31 Blower 32 Air pipe 33 Intermediate storage tank 34 Compartment wall 41 Opening 42 Opening 43 Activated carbon 44 Discharge pipe 46 Inclined plate 46 Activated carbon 47 Discharge pipe 48 Inclined plate 49 Liquid level detector 50 Exhaust Heat Tower 51 Supply pipeline 52 Control valve 53 Discharge pipe 54 Outlet pipeline 55 Condenser 61 Air exhaust means

Claims

1. A plurality of septic tanks arranged adjacent to each other; a connecting pipe installed so as to straddle one of the septic tanks and the other of the septic tanks adjacent to each other, The purification treatment device is provided with a suction material in the connecting pipeline, at least one end of which is immersed in the upper part of the liquid to be treated contained in one of the purification treatment tanks, and which sucks up the liquid to be treated in one of the purification treatment tanks from the one end by capillary action, and a siphon pipeline which guides the liquid to be treated that overflows from the suction material to the lower part of the other purification treatment tank.

2. a pretreatment tank containing the liquid to be treated is disposed adjacent to a first purification tank which is set at a position where the liquid level is highest in the purification tank; A purification treatment device as described in claim 1, wherein a partition wall is provided to separate the upper part of the pretreatment tank from the upper part of the first purification treatment tank, and an opening is provided at the lower end of the partition wall to connect the pretreatment tank to the first purification treatment tank.

3. 3. A purification treatment device according to claim 2, wherein said pretreatment tank is provided with a discharge pipe for discharging the floating liquid floating on the liquid surface in said pretreatment tank to the outside.

4. 3. The purification treatment device according to claim 1, wherein each of said purification treatment tanks is provided with a discharge pipe for adjusting the liquid level in said tank.

5. 3. The purification treatment device according to claim 1, wherein the connecting pipeline has a porous body constituting the suction material and an outer cylindrical tube covering the outer periphery thereof, and a gap forming the siphon pipeline is provided between the outer cylindrical tube and the porous body.

6. 3. The purification treatment device according to claim 2, further comprising a pressurizing means for pressurizing the liquid surface of the liquid to be treated contained in at least the first purification treatment tank.

7. 2. The purification treatment device according to claim 1, further comprising a supply pipe for supplying the treated liquid discharged from the purification treatment tank to a heat exhaust tower.

8. 2. The purification treatment device according to claim 1, further comprising air exhaust means for exhausting air from within said connecting pipe line to the outside, thereby filling said connecting pipe line with the liquid to be treated.

9. 9. The purification treatment device according to claim 8, wherein said air discharge means comprises a suction pump that sucks air from within said connecting pipe line and discharges it to the outside.

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