Odor substance removal device for sewage pipe and odor substance removal method using the device

Abstract

To provide an odor substance removal device capable of preventing odor generated from a sewage pipe from flowing into each household, and an odor substance removal method using the device.MEANS FOR SOLVING THE PROBLEM: An odor substance removal device for a sewage pipe that removes odor by using an internal space of a sewage basin 10 and has: a fan 14 that is installed between a mounting pipe branched from a sewage main pipe and a drain pipe 500 extended from a facility of a sewage user, is provided in the sewage basin 10 that discharges drainage from the facility of the sewage user to the mounting pipe, and generates an air flow in the sewage basin 10; and a filter 16 that is installed at a midway position of a flow path of the air flow generated by the fan 14 and is capable of adsorbing and collecting an odor substance that generates odor in the air flow. By this configuration, the odor substance removal device for the sewage pipe can remove the odor substance that has risen from the sewage main pipe side in the sewage basin 10.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an odorous substance removal device for sewer pipes and a method for removing harmful substances using said device, and in particular to an odorous substance removal device for sewer pipes for removing odors caused by substances such as styrene in sewer pipes that often occur immediately after repairs to sewer pipes such as sewer main pipes and lateral pipes, and a method for removing odorous substances using said device. [Background technology]

[0002] Existing pipes, such as sewer pipes, deteriorate over many years of use, and their useful life is generally considered to be about 50 years. As a result, the number of existing pipes that have exceeded their useful life is steadily increasing year by year. In particular, existing pipes such as sewer main pipes that are buried underground are inevitably subject to various deformations due to ground movement, such as the occurrence of steps due to shifting and changes in diameter. In addition to such deformations, repairs and replacements become necessary due to deterioration over time. Due to various reasons such as these, the current situation is that existing pipes require some kind of repair at a certain time.

[0003] In particular, in the case of sewer systems, not only the main sewer pipe, but also the connecting pipes that branch off from the main pipe and connect to each household's sewage pipe via a sewage manhole will require repair (rehabilitation) work as they deteriorate.

[0004] Patent Document 1 discloses a method for repairing an existing pipe by forming a new pipe layer on the inner wall of the pipe as a method for rehabilitating the above-mentioned sewer main pipe or lateral pipe.

[0005] In other words, a technology is known in which an uncured resin inner pipe (tubular lining material) is introduced inside the existing pipe without demolishing or replacing the existing pipe, and then this is hardened by irradiating it with light or applying heat from the inside of the pipe, thereby constructing a new pipeline (rehabilitated pipe) inside the existing pipe.

[0006] This method of repairing pipelines has the advantage that it does not require digging up roads or other surfaces at the surface to replace existing pipes, minimizing the impact on the transportation network and inconvenience to nearby residents. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2013-223939 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the method of forming a rehabilitated pipe inside an existing pipe such as a sewer pipe, the resin material constituting the lining material for repairing the existing pipe may contain styrene as a material for hardening the lining material. After the repair work of the existing pipe, especially for several days, the free styrene remaining in the hardened lining material vaporizes from the lining material and enters the inner space of the rehabilitated pipe, resulting in an odor with a high concentration of styrene. Therefore, if the rehabilitated existing pipe is a sewer main pipe, the odor of styrene will reach the ground level or each household's drainage pipe through the lateral pipe branched from it, or directly through the manhole from the lateral pipe in the case of rehabilitating the lateral pipe, and may have a negative impact on the ground level or each household due to an unpleasant odor.

[0009] The present invention has been made in consideration of the above circumstances, and its object is to provide a sewage manhole that can prevent odors from sewer pipes, in particular odors caused by styrene and the like that are generated from repaired sewer pipes, from flowing into each home, and a method for removing odorous substances using said sewage manhole. [Means for solving the problem]

[0010] In order to solve the above problems, the odorous substance removal device for a sewer pipe according to claim 1 is A sewer pipe odor substance removal device for removing odors from a sewer main pipe and a lateral pipe branched off from the sewer main pipe, comprising: a sewer catchment basin that is installed between an attachment pipe branched off from the sewer main pipe and a drainage pipe extending from a facility of a sewer user and that is provided within a main body housing of a sewer catchment basin through which wastewater from the facility of the sewer user flows out into the attachment pipe; a fan that generates an airflow within the main body housing; The air conditioner is characterized in including a filter that is installed in the main body housing at a midway position in the flow path of the airflow generated by the fan and is capable of adsorbing and collecting odorous substances that cause odors in the airflow.

[0011] The present invention focuses on a sewage manhole that forms a certain space between an attachment pipe and a drainage pipe, and aims to remove odors by using the internal space of the sewage manhole. With the above-mentioned configuration, for example, substances such as styrene that have risen from the sewer main pipe after a pipe rehabilitation work, and odors caused by these substances, pass through the filter by the airflow generated by a fan installed in the main body of the sewage manhole. Since the main body of the sewage manhole is a partitioned space, more efficient odor removal is possible by making the filter function in the airflow generated within it.

[0012] Therefore, odorous substances and odors that rise from the sewer main pipe through the connecting pipe are collected and removed at the sewage manhole stage, effectively preventing the odors from rising upstream of the sewage manhole and adversely affecting the living areas of sewer users.

[0013] The odorous substance removal device for a sewer pipe according to claim 2 is the odorous substance removal device for a sewer pipe according to claim 1, The fan and the filter are mounted on a frame member formed to a size that allows them to be installed within the main body housing in a state in which they can generate the airflow.

[0014] This makes it possible to install the fan and filter by loading the internal frame member into the main body housing without having to attach them to the inner walls of the main body housing of the sewage manhole, making it possible to apply the present invention without having to modify an existing sewage manhole. The odorous substance removal device for a sewer pipe according to claim 3 is the odorous substance removal device for a sewer pipe according to claim 1 or 2, The present invention is characterized in that a dehumidifying filter capable of removing moisture is provided on the upstream side of the airflow of the filter.

[0015] By including this dehumidification step, the dehumidified airflow passes through the odor filter on the downstream side, thereby improving the odor effect of the odor filter.

[0016] The odorous substance removing device for a sewer pipe according to claim 4 is the odorous substance removing device for a sewer pipe according to claim 2, The frame member has legs that enable the fan and the filter to be supported at a predetermined height above the bottom of the main body housing.

[0017] This allows the internal frame member with the fan and filter to be easily installed inside the main body of the existing sewage manhole without the need for complicated installation work, and also allows the height of the fan and filter to be accurately adjusted in advance. In other words, in a sewage manhole where water may accumulate, the height can be adjusted by adjusting the length of the legs according to the region and environment, realizing appropriate installation.

[0018] The sewage manhole according to claim 5 is the device for removing odorous substances from a sewer pipe according to claim 1, The filter is capable of adsorbing mainly styrene, and is characterized by containing activated carbon, zeolite, or silica.

[0019] This makes it possible to accurately eliminate the generation of styrene and the resulting odor during repair work on sewer mains and lateral pipes, which is a typical situation in which odors cause adverse effects to general users.Furthermore, various harmful substances and odors other than styrene can also be appropriately eliminated.

[0020] The odorous substance removal device for a sewer pipe according to claim 6 is the odorous substance removal device for a sewer pipe according to claim 2, The inner frame member is characterized in that a drive source for driving the fan is mounted in the inner frame member.

[0021] According to this configuration, it is possible to eliminate the need to install a drive source outside the sewage manhole to drive the fan and the hassle of running wires to connect it to the fan.

[0022] The odorous substance removal device for a sewer pipe according to claim 7 is the odorous substance removal device for a sewer pipe according to claim 2, the frame member is configured as an internal housing having a size that can be accommodated in the space within the main body housing, the top of which is open and at least the bottom of which has ventilation properties; a fan storage chamber formed at the top of the internal housing, the bottom of which has ventilation and in which the fan is mounted; a filter storage chamber that is partitioned by the bottom of the fan storage chamber, is provided below the fan storage chamber, and has a breathable bottom in which the filter is loaded; a drive source housing section provided on a side of the fan housing chamber and the filter housing chamber in the internal housing and separated by a wall section; The present invention is characterized by having the following.

[0023] This allows the necessary components, such as the fan, filter, and drive unit, to be compactly housed in one housing, and the sewage manhole of the present invention can be constructed simply by fitting the internal frame member configured as a housing into the main housing. In addition, since the housing is configured with an open top and the bottom is also breathable, the airflow is accurately formed by the fan. In other words, an airflow path partitioned by the side walls of the internal housing is formed, and odorous substances can be efficiently removed by the airflow.

[0024] A method for removing odorous substances using the odorous substance removal device for a sewer pipe according to claim 8, A method for removing odorous substances from a sewer pipe using the odorous substance removal device for a sewer pipe according to any one of claims 1 to 7, A fan is driven in the main body housing to generate an air flow; A filter capable of adsorbing and collecting odorous substances is disposed midway along the flow path of the airflow inside the main housing generated by the fan, thereby removing odorous substances from inside the main housing.

[0025] According to the odorous substance removal method using the odorous substance removal device for sewer pipes of the present invention, it is possible to remove odors from the air within the main body of the sewage manhole, which forms a certain space between the attachment pipe and the drain pipe. In other words, it is intended to effectively remove substances such as styrene that come up from the sewer main pipe, and the odors caused by these substances, before they reach the stage of sewer users such as general households. The sewage manhole forms a partitioned space, and removing odorous substances in this space can suppress the odor before it is diffused to the outside, which is a significant effect for general sewer users as well. The odorous substance removal method using the sewer pipe odorous substance removal device according to claim 9 is the odorous substance removal method according to claim 8, The method includes a step of providing a dehumidifying filter capable of removing moisture upstream of the airflow from the filter, and removing moisture from the airflow before it passes through the filter.

[0026] By including this dehumidification step, the dehumidified airflow passes through the odor filter on the downstream side, thereby improving the odor effect of the odor filter. Effect of the Invention

[0027] According to the present invention, the flow of odorous substances from the sewer main pipe or lateral pipe to the sewer user side can be removed at the sewage manhole stage. In particular, it is possible to effectively suppress the adverse effects of odorous substances such as styrene that are generated after repair work on the sewer main pipe or lateral pipe without modifying the basic structure of the existing sewage manhole. In particular, it is possible to prevent odors from flowing to ordinary homes and other places upstream of the sewer pipe. [Brief description of the drawings]

[0028] [Figure 1] 1 is a conceptual explanatory diagram showing the conceptual configuration of a sewage manhole in which an odorous substance removal device according to the present invention is installed. FIG. [Diagram 2] 1 is a configuration explanatory diagram of an odorant removal device according to one embodiment of the present invention; [Diagram 3] FIG. 11 is a diagram illustrating the configuration of an odorous substance removal device according to another embodiment of the present invention, showing a configuration in which a dehumidifying filter is added. [Figure 4] FIG. 11 is a configuration explanatory diagram showing another embodiment of the present invention (an example in which a driving unit is installed inside). [Diagram 5] 1 is a partially cutaway oblique view of a frame-shaped body installed within the main body housing of the sewage manhole of the present invention. FIG. [Figure 6] 1 is a schematic diagram of a sewerage system to which an odorant removal device of the present invention is applied (the device of the present invention is shown by a dashed line). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] 6 shows a schematic configuration of a sewer system to which the odorous substance removal device for a sewer pipe of the present invention is applied, and as shown in the figure, a sewer main pipe 100 is buried underground, and manholes 200 are provided at predetermined intervals. An annex pipe 300 is formed branching off from this sewer main pipe 100. The annex pipe 300 is a pipe for pouring used water discharged from a sewer user's house 400 or the like into the sewer pipe 100, and is connected to a drainage pipe 500 from the house 400.

[0030] A sewage manhole 10 is provided at the connection between the attachment pipe 300 and the drainage pipe culvert 500. This sewage manhole 10 is intended to temporarily collect wastewater from the house 400, stop foreign matter, etc., and allow it to flow to the attachment pipe 300 side. Some sewage manholes 10 also collect rainwater and other water at the same time (combined sewer system), and they come in a variety of sizes and shapes. The circular ones have inner diameters of 150mm, 200mm, or 500mm, and depths of about 400mm to 1000mm. Older ones were made of concrete, but in recent years, polyvinyl chloride has been used. The top is covered with a lid to prevent garbage and other debris from getting in, but it is not completely airtight, and is covered enough to prevent odors from escaping as much as possible. In the case of sewage manholes in the combined sewer system where rainwater also flows in, a grating (lattice-shaped) cover is used.

[0031] A feature of the present invention is that a structure for removing odors is provided in the sewage manhole 10 that forms a predetermined space between the sewer main pipe 100 and the house 400. To make it easier to understand the installation state of the structure according to the present invention, the device according to the present invention is shown by a broken line.

[0032] 1 shows the conceptual configuration of the present invention installed in a sewage catchment 10, which is shown in a line diagram for the sake of simplicity, with the thickness of the walls and the like omitted. As shown, the sewage catchment 10 is composed of a main body housing 10a and a lid 10b, and the main body housing 10a is connected to an attachment pipe 300 on the downstream side and a drain pipe 500 on the upstream side, with the upper opening closed by the lid 10b, forming a partitioned space 12.

[0033] Inside the main body housing 10a, there is disposed a fan 14 for generating an airflow in the internal space 12, and a filter 16 located midway along the airflow 600 generated by driving the fan 14, in this example directly below the fan 14. In other words, an airflow is generated inside the internal space 12, and the gas rising from the downstream attachment pipe 300 and further downstream the main sewer pipe 100 passes through the filter 16.

[0034] As described above, although the sewage manhole 10 is not airtight, a certain partition state is ensured, so that by circulating the internal gas in this internal space 12, it is possible to effectively remove odors using the filter 16.

[0035] In other words, efficient and concentrated odor removal is possible by generating airflow in the partitioned space of the main body housing and exerting a filtering function in the airflow path.In order to make it easier to understand the placement of the odorous substance removal device for sewer pipes of the present invention in the entire sewer system, the odorous substance removal device (frame member 20) is shown by dashed lines in Figure 6.

[0036] The fan 14 and filter 16, which are essential elements of the present invention, may be installed in the main housing 10a in a variety of ways as long as they are installed so that an airflow is generated in the space 12 and passes through the filter 16. That is, they may be mounted in separate members as described below, and depending on the situation, it is also acceptable to install the fan 14 and filter 16 by simply attaching them to the main housing 10.

[0037] For the filter 16, for example, a filter capable of mainly adsorbing styrene can be used, and a filter containing activated carbon, zeolite, or silica is preferable, and it is installed in the form of granules having a particle size of, for example, 1 to 3 mm. A typical situation in which odors cause adverse effects to general users is the generation of styrene during repair work on sewer main pipes and lateral pipes, so it is preferable to use a material that can accurately remove the odors caused by this.

[0038] Figures 2 to 4 show an embodiment of the present invention, and as shown, a fan 14 and a filter 16 are attached to a frame member 20 formed to a size that can be installed within the main housing 10a of the sewage manhole 10, in a state in which they can generate an airflow.

[0039] The size of this frame member 20 is adjusted to fit inside the main body housing 10a, and a battery 18 for driving the fan 14 is installed inside or near the side. Furthermore, legs 22 are provided on the bottom, so that the frame member 20 is secured to be suspended above the bottom of the main body housing 10a.

[0040] With this configuration, the fan 14 and filter 16 can be disposed within the main body housing 10a without the need to fix them to the inner wall or the like of the main body housing 10a of the sewage manhole 10. In other words, by mounting and arranging the necessary components in this internal frame member 20, the device configuration of the present invention can be completed simply by installing the frame member 20 within the sewage manhole 10, and it is possible to install the device using the existing sewage manhole 10 as is. It is possible to avoid the complicated work of modifying an existing sewage manhole.

[0041] As a result, airflow is generated inside the main body housing 10a by driving the fan 14. The filter 16 is located midway along this airflow, and can remove odor-causing substances such as silica and the odor that is being generated. In other words, odors from the sewer main pipe 100 that has just been rehabilitated are eliminated in the sewage manhole 10 before flowing into the house 400.

[0042] In the embodiment shown in Fig. 2, the fan 14 is disposed at the upper position of the frame member 20 installed in the main body housing 10a of the sewage manhole so as to generate an air current from below to above, and the filter 16 is disposed below the fan 14. The bottom 24 where the filter 16 is provided is configured with holes so that the air current 600 can pass through. Furthermore, the partition 26 between the filter 16 and the fan 14 is also configured with holes so that the gas can easily pass through.

[0043] In addition, the upper part of the frame member 20 is closed to prevent water from falling into the main housing 10a from the outside and condensation water from falling from the lid 10b, and the airflow blown out from the fan 14 is blown out in the direction of the arrow 700 (horizontal direction) from an opening provided in the side wall of the frame member 20. The legs 22 are also configured to change their extension length, and are adjusted to hold the filter 16 and the fan 14 at a predetermined height. That is, the length is adjusted to hold them at a position higher than the opening 300a of the mounting pipe 300 and the opening (not shown) of the drain pipe 500. The legs are adjusted so that the filter 16 and the fan 14 will not be submerged in water even if water flowing into the sewage manhole 10 from the house 400 temporarily accumulates in the sewage manhole 10. The power source for driving the fan 14 can be an external one, but it is also possible to install the driving source 18 near the filter 16 and the fan 14 .

[0044] 3 shows an embodiment in which two layers of filters 16a, 16b are provided, with the two layers stacked one on top of the other as shown. In this configuration, the lower filter 16b can be, for example, a dehumidifying filter, and can be a filter that holds calcium chloride particles (e.g., 1 to 3 mm) as a dehumidifying agent. When calcium chloride is used, it absorbs moisture and liquefies, dropping downward and being washed away with the sewage, making it easy to manage.

[0045] By providing this dehumidifying filter 16b, the dehumidified airflow passes through the upper odor filter 16a, improving the odor removal effect. Note that this two-layer filter structure can also be configured so that both layers are odor filters.

[0046] In addition, in the two-layer filter shown in this figure, taking into consideration the infiltration of water through the lid 10b of the sewage manhole 10, a horizontal exhaust system with the top closed is used, as in the configuration shown in Figure 2.

[0047] 4 shows yet another embodiment, in which the filter 16 is arranged upright as shown. In this configuration, the side surface of the internal frame member 20 is configured as a perforated surface through which air can pass, and the airflow passing through passes through the filter 16, rises, passes through the fan 14, and flows out from the opening of the upper internal frame member 20. In the arrangement of this embodiment, the drive source 18 is installed below the filter 16.

[0048] In this way, the filter 16 and fan 14 can be arranged in a variety of patterns within the partitioned space 12 inside the sewage manhole 10, as long as the fan 14 can generate an airflow and the filter 16 can be placed in the middle of that airflow.

[0049] Next, Fig. 5 shows a more specific embodiment, illustrating one example of a specific configuration of the internal frame member 20. As shown in the figure, an internal housing 40 formed to a size that can be stored in the main body housing 10a is configured to be supported by legs 22. The top of the internal housing 40 is open, and a through hole 40b is formed in the bottom part 40a to provide ventilation.

[0050] Furthermore, a partition 40c is formed above the bottom 40a, dividing the inner housing 40a into upper and lower parts. The partition 40c also has through holes 40d formed therein to allow ventilation. In this embodiment, a filter 16 (not shown) is installed on the bottom 40a, and a fan (14) is installed on the partition member 40c.

[0051] Furthermore, a feature of this embodiment is that a drive source housing section 40f is formed as a room partitioned by another wall section 40e on the side of the internal housing 40. That is, the drive source housing section 40f houses a power source and wiring (not shown). This can eliminate the complication of wiring between the internal housing 40 and the external power source that occurs when the power source for the fan 14 is external. Also, a cutout section 40g is provided in the wall section 40e to allow wiring within the internal housing 40.

[0052] When an external power source is used, the cover 10b of the sewage manhole 10 will be left slightly open during the period in which the device of the present invention is installed in order to ensure a gap for passing the electric wires through.

[0053] It is desirable to prevent the internal housing 40 from being submerged in the sewage manhole 10 as much as possible, and the legs 22 are configured so that their length can be adjusted. In this embodiment, the internal housing 40 is configured as a double cylindrical body, and the length of the legs 22 after height adjustment is maintained by inserting a pin 22b into a hole 22a formed in the cylindrical body.

[0054] Furthermore, a base portion 24 is provided below the legs 22 in order to stabilize the installed state of the inner housing 40, thereby preventing it from easily falling over. [Explanation of symbols]

[0055] 10 Sewage Manhole 10a Main body housing 14 Fan 16 Filters 20 Internal frame members 22 Legs 24 Base 40 Internal housing 40a Bottom of inner housing 40b Partition of inner housing 40e wall 40e Drive source housing

Claims

1. An odor removal device for a sewer pipe that removes odors from a sewer main pipe and a lateral pipe branching off from the sewer main pipe, The sewer control unit is installed between a connecting pipe branched from the sewer main pipe and a drainage pipe extending from a facility of a sewer user, and is installed within a main body housing of a sewer control unit that allows wastewater from the facility of the sewer user to flow into the connecting pipe, a fan that generates an airflow within the main body housing; a filter that is installed in the main body housing at a midpoint of a flow path of the airflow generated by the fan and that is capable of adsorbing and collecting odorous substances that cause odors in the airflow; An odorous substance removal device for a sewer pipe, comprising:

2. The sewer pipe odor removal device according to claim 1, characterized in that the fan and filter are attached to a frame member formed to a size that can be installed within the main housing in a state where they can generate the air flow.

3. 3. The device for removing odorous substances from a sewer pipe according to claim 1, further comprising a dehumidifying filter capable of removing moisture, provided upstream of the filter in the airflow direction.

4. 3. The sewer pipe odor removal device according to claim 2, wherein the frame member has legs that enable the fan and the filter to be supported at a predetermined height above the bottom of the main body housing.

5. 2. The sewer pipe odorant removal device according to claim 1, wherein the filter is capable of mainly adsorbing styrene and contains activated carbon, zeolite, or silica.

6. 3. The apparatus for removing odorous substances from a sewer pipe according to claim 2, wherein a driving source for driving the fan is mounted in the inner frame member.

7. the frame member is configured as an internal housing having a size that can be accommodated in the space within the main body housing, an open top, and at least a breathable bottom; a fan storage chamber formed at the top of the internal housing, the bottom of which has ventilation and in which the fan is installed; a filter storage chamber that is partitioned by the bottom of the fan storage chamber, is provided below the fan storage chamber, and has a breathable bottom in which the filter is loaded; a drive source housing provided on a side of the fan housing chamber and the filter housing chamber in the internal housing and partitioned by a wall; 3. The sewer pipe odor removal device according to claim 2, further comprising:

8. 3. A method for removing odorous substances from a sewer pipe using the sewer pipe odorous substance removal device according to claim 1 or 2, A fan is driven in the main body housing to generate an airflow; An odorous substance removal method characterized by installing a filter capable of adsorbing and collecting odorous substances at a position midway along the flow path of the airflow generated by the fan within the main housing, and removing odorous substances within the main housing.

9. The odorous substance removal method according to claim 8, characterized in that it includes a step of providing a dehumidifying filter capable of removing moisture upstream of the airflow of the filter, and removing moisture from the airflow before it passes through the filter.

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