JP3062883B2 - Water purification method and water purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filter medium which is a porous material mainly composed of an earth-based material such as clay, silt, sandy soil, sludge, soft soil and the like, and is used for a water channel of a urine purification apparatus. The present invention relates to a water purification method and a water purification device that can continuously improve water quality.

[0002]

2. Description of the Related Art Conventionally, various filter media, such as water channels for rivers and agriculture, households, schools, food establishments, livestock business facilities, and water purification of seawater and other wastewater treatment facilities, have been used. Attempts have been made to lay concrete solids having voids, filter media made of plastic, charcoal, stone, rubble, and the like. In recent years, a method of laying a filter medium in a state of being filled in a water-permeable basket made of a metal mesh material or the like has also been implemented. In these methods, the pollutants contained in the flowing water between the filter media can be captured, aggregated and precipitated, and the water quality can be purified. Further, the water quality is also purified by forming a microbial membrane layer on the surface of the filter medium or between the filter materials, and oxidatively decomposing organic substances in the water by the microorganisms. Further, recently, a porous filter medium having improved contact area with running water using a porous aggregate such as pumice has been proposed.

[0003]

However, in the above-mentioned conventional water purification method, a filter medium is laid in a layer at the bottom (river bed) of a river or the like. Since the sediment settles and stays as it is, the space between the filter media is partially blocked by the sediment in order from the lower layer side, and the filtering action is lost. The surface of the porous aggregate is also covered with sediment. Therefore, after a certain period, the filtration action is lost,
Water purification efficiency is significantly reduced. In addition, the microbial membrane layer formed on the surface of the filter medium cannot contact the water stream, so that the water purification efficiency also decreases in this respect. Therefore,
After a certain period of time, it is necessary to take out the filter media from a river or the like and replace it with a new one. In particular, in the case of human urine purification treatment containing a large amount of fouling substances in running water, the filter medium must be replaced in a very short time. In addition, there is a current situation in which there is little use for reuse of the removed filter media.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above, and it has been proposed that clay, silt, sandy soil, sludge, soft soil, or 100 parts by weight of an earth-based material obtained by combining these, cement and solidification In a state in which a large number of filter media comprising 10 to 35 parts by weight of one or more materials selected from the group consisting of an agent and a cement-based solidifying agent are filled in a water-permeable container, By installing and arranging the water-permeable containers in the length direction, a filled layer of the filter medium that is continuous in the length direction is formed upward, and a space portion that is continuous in the length direction is formed below, and the space portion is formed. An openable and closable partition wall is provided below the water, and the fouling substances contained in the running water are captured and settled by the filter medium, and the sediment that has settled out of the water-permeable container into the space is sedimented with the partition wall closed. Near the water side of the partition wall It was integrated, to a water purification method characterized by its water lower collection vessel at the installation state by introducing the precipitate into the recovery vessel by opening the partition wall recovery.

[0005] The present invention also relates to clay, silt, sandy soil,
Sludge, soft soil, or 100 parts by weight of an earth-based material obtained by combining them, a large number of filter media comprising 10 to 35 parts by weight of one or more materials selected from cement and a solidifying agent or a cement-based solidifying agent, A water-permeable container to be filled and arranged in the length direction, and when the water-permeable container is installed in a flowing water channel, a filling layer of a filter medium continuous in the length direction is formed upward and the length is lowered in the length direction. A purifying mechanism which is provided in the flowing water channel with a space forming means for forming a continuous space, and an openable / closable partition wall is provided below the water in the space, and the sediment in the space is provided. The sediment is collected near the upper side of the partition wall with the partition wall closed, and the partition wall is opened with the collecting container installed under the water, and the sediment is introduced into the collecting container and collected. Characterized by comprising a discharge mechanism Also it proposes a quality purifying device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a filter medium used in the present invention will be described. As the filter material, a material composed of 100 parts by weight of an earth-based material and 10 to 35 parts by weight of one or more materials selected from cement and a solidifying agent or a cement-based solidifying agent is used. In the following description, "filter medium" indicates a solidified version of the above-mentioned earth-based material.

[0007] Examples of the soil-based material that is a main component of the filter medium include clay, silt, sandy soil, sludge, soft soil, and the like, or may be used in an appropriate combination. For example, it may be easily procured in the vicinity of the construction site, and therefore, the cost of raw materials is lower than that of a conventional solidified concrete using fine aggregate or coarse aggregate. Especially when procuring earth-based materials near the construction site as described above, materials (cement and solidifying agent) transported to the construction site
Is also advantageous in this respect. In addition, sludge causes environmental pollution as it is, but is solidified and modified by a cement and a solidifying agent described later, so that it can be used as an earth-based material in the filter medium of the present invention. It can be used as embankment material or landfill for road foundations. It is also rich in nutrients and is used as fertilizer. The same applies to soft soil.

[0008] The cement may be any cement, for example, one or two selected from Portland cement, blast furnace cement, silica cement, fly ash cement, alumina cement, expanded cement and the like.
Mixtures of more than one species can be used.

As the solidifying agent, many commercially available products have already been provided on the market. Generally, improvement of soft ground such as high hydrous clay and high organic soil and industrial waste containing sludge, sewage sludge, harmful heavy metals, etc. It is used for solidification of objects. Since there are many commercially available products, it is difficult to specify the compounding amount in a narrow range, and the amount to be added may be set in accordance with desired properties such as strength. For example, it is desirable to add 0.1 to 30 parts by weight of the solidifying agent to the earth-based material and cement (100 parts by weight). Any commercially available cement-based solidifying agent may be used.

[0010] The mixing ratio of each of the above components in the filter medium is 10 to 1 part by weight of one or more materials selected from cement and a solidifying agent or a cement-based solidifying agent per 100 parts by weight of the earth-based material (hereinafter referred to as a solidified material). 35 parts by weight are added. When the amount of the solidified material is smaller than the mixing ratio (the amount of the earth-based material is large), the lowermost layer portion is crushed when the filter medium is stacked and filled in a water-permeable container described later, If it is installed inside, there is a possibility that it will be broken (damaged) by water flow (water pressure). On the other hand, when the amount of the solidified material is larger than the above mixing ratio (the amount of the earth-based material is small),
The formation of voids between the soil particles is impaired, and the work of crushing after replacement becomes difficult.

Further, various kinds of aggregates such as sand, crushed stone, fly ash and the like may be used in combination with the above-mentioned composition. For example, a reticulated aggregate having a diameter of several tens of mm may be added. Further, various admixtures (agents) may be added.

[0012] Then, when preparing (forming) the filter medium,
An appropriate amount of water is added to the mixture of the above components, and the mixture is kneaded with a dedicated kneading machine or the like. The kneaded material is apparently similar to ready-mixed concrete, and has appropriate fluidity. Any known method may be used for molding the kneaded material into various shapes.

[0013] The filter medium is formed in a rek shape (small lump shape), but the specific shape and size are not particularly limited, and may be formed in any shape and size. Generally, a diameter of 40 to 40
It is desirable to form it into a spherical shape of about 100 mm. Further, a combination of a recre-like aggregate having a diameter of several tens of mm is used, and a composition containing the earth-based material as a main component is coated around the recre-like aggregate to form a reticulate composite having a diameter of about 100 mm. Is also good. In this case, if a reticulated aggregate to be used in combination with, for example, zeolite or the like having an adsorbing performance is used, the efficiency of removing suspended suspended substances becomes higher.

Next, the water-permeable container filled with the filter medium will be described. The water-permeable container may be any one as long as the filter medium can be accommodated therein, and the running water can sufficiently contact the accommodated filter medium.
The size and the like are not limited. In general, a cage-shaped box with a large number of voids on the bottom and side surfaces that does not allow the filter material to fall is used, and a basket-shaped box with a high strength metal mesh, metal mesh, punched metal, etc. For example, those formed into a shape, those formed by assembling bar-shaped wood into a cage or a box, and the like are used. Further, even if the filter is formed in a frame shape having a void (coarse) larger than the diameter of the filter, a large number of filter media are stored in a net-shaped bag, and if the bag is stored together with the bag, the filter must fall. If there is no problem.

As means for installing the water-permeable container filled with the filter medium in a flowing water channel so that a space is formed below the space (space forming means), for example, a leg portion may be attached to the water-permeable container. May be provided. Further, a plurality of mounting tables may be provided so that a groove-shaped space is formed along the flow direction of the flowing water. This space portion forming means is not particularly limited to the above-described example, and may be configured in any manner. The height of the space is determined by the height of the space forming means to be installed, but may be set appropriately from several cm to several tens of cm.

As described above, since the filter medium is filled in the water-permeable container and installed in the flowing water channel so as to form a space below the container, various pollutants contained in the flowing water can be reduced. The water is trapped on the surface of the filter medium and between the filter media, aggregates and precipitates, and settles out of the water-permeable container into a space thereunder.
Then, the sediment of the fouling substance settled in the space is discharged out of the flowing water channel by an appropriate method.

As a means (discharge mechanism) for discharging the sediment settled in the space to the outside of the flowing water channel, any structure may be adopted, and three preferred examples are shown below. Among them, in the present invention, the discharging means (3) is selected.

(1) By closing the lower side of the space with the partition wall, sediment of the fouling substance is accumulated near the upper side of the partition wall. As the partition wall, a plate material such as a concrete plate, a wooden plate, and a metal plate is generally used.
The material is not particularly limited, and it is erected so that the upper end is not exposed from the water surface. The sediment accumulated by the partition wall may be sucked and discharged by a suction pump such as a submersible pump or a vacuum pump, or may be scooped up by a fine mesh material. This partition wall may be installed close to the water-permeable container filled with the filter medium, or may be installed under the water that is slightly separated, but when picking up with a net material, it is limited to work from above Must be in the latter location. In addition, in the latter case, even when suction is performed by the suction pump, there is no need to permanently install equipment near the water channel, and the equipment is carried near the water channel at appropriate periodic intervals, and the tip of the suction pipe is inserted into the space from above. Can be inserted and ejected. Further, the above-mentioned partition wall is installed at the lowermost water side of the space portion. In addition, a similar partition wall may be installed at an appropriate position in the length direction of the space portion.

The method (1) is not particularly limited, but is suitable when the water flow is relatively fast. The partition wall also has a function of preventing the sediment from flowing out (under the water). Water purification components (components excluding sediment in running water) flow down over the partition wall. It should be noted that a fine mesh material or the like is provided in place of the partition wall, and the sediment (floating matter) which is finer and floats without being settled completely.
May be removed, but this removal effect needs to be replaced frequently because the fine voids of the netting material are closed and lost by the suspended matter.

(2) A through hole reaching the lower space portion is formed between the water-permeable container itself and the adjacent water-permeable container. A suction pipe connected to a suction pump is inserted from above into the formed through hole, and the sediment is discharged. When the tip of the suction pipe is located in the space, the sediment floating in the vicinity is sucked, and when the tip of the suction pipe is located in the through hole, the sediment remaining between the filter media around the suction pipe is sucked. The through-hole may be formed by forming a concave portion on the side surface of the water-permeable container so that the concave portions of two adjacent water-permeable containers are opposed to each other, or a corner of the water-permeable container formed in a rectangular parallelepiped shape. A concave portion may be formed in the portion, and the concave portions of four adjacent water-permeable containers may be formed to abut each other.

The method (2) is not particularly limited, but is suitable for the case where the water flow is relatively slow and the sediment does not flow to the partition wall. However, if the suction is not continuously performed by the suction pump, the sediment flows out. Therefore, it is desirable to use the method together with the method (1) of installing the partition wall.

(3) A partition wall that can be opened and closed (hereinafter, referred to as a sliding partition wall to distinguish it from the fixed partition wall) is provided below the space below the water. This is similar to the fixed partition wall in that the sediment is collected near the upper side of the slide partition wall in a state where the slide partition wall is closed, but is collected below the slide partition wall. With the container installed, open the sliding partition wall,
The precipitate is introduced into the collection container and collected. As the collection container, a container made of fine mesh material is generally used.

The method (3) is not particularly limited in its application, but is suitable for the purification of human waste containing a large amount of fouling substances in running water. For example, when the collection container is permanently installed below the space without installing the sliding partition wall, the fine voids of the mesh material constituting the collection container are quickly formed by sediment contained in the running water. And the running water itself will be blocked. However, as described above, a sliding partition that can be opened and closed is provided, and after collecting sediment, a collection container is installed and the sliding partition is opened, and a large amount of sediment is introduced into the collection container along with running water. Therefore, although the fine voids of the mesh material constituting the collection container are closed by the precipitate in the same manner as described above, a large amount of precipitate can be collected by removing the collection container.

As described above, in the water purification method of the present invention, the sediment of the fouling substance is settled in the space and discharged from the space out of the flowing water channel, so that the sediment does not stay between the filter media. Filtration is not lost in a short time. Therefore, water purification is performed continuously. In addition, microorganisms inhabit the surface of the filter medium and between the filter media, and provide a place for microbial growth.However, the water flow is appropriately relaxed, and the fresh water flow is supplied without stagnant due to stagnant running water. Water purification is also actively carried out. In particular, since a porous material containing an earth-based material as the main component is used as a filter material, it has excellent adsorptivity, and not only the surface and between the filter materials, but also the inside of the filter material becomes a home for microorganisms, and these microorganisms oxidize and decompose organic substances. . Furthermore, microorganisms inhabit the soil-based material constituting the filter medium from the beginning or after the formation, and oxidatively decompose organic substances in running water. Therefore, suspended suspended solids (SS), biological oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (T-
N) can be reduced to improve the water quality.

Further, according to the water purification method of the present invention, since the water purification is carried out while the filtration action is continuously maintained as described above, it is not necessary to frequently replace the filter medium as in the conventional case. In particular, since a porous material mainly composed of an earth-based material was used as the filter medium, the replaced filter medium can be easily crushed by heavy equipment, etc., and can be returned to soil or reused at construction sites such as embankment. it can. In addition, since the pulverized material has a low cement content and the soil material contains phosphorus and nitrogen, it can be reused as fertilizer. Furthermore, as described above, sludge or soft soil can be used as an earth-based material, and can be applied to a road foundation or the like after pulverization. In this case, it also contributes to ground improvement and environmental problems.

Further, the water purification apparatus of the present invention comprises a purifying mechanism permanently installed in a flowing water channel and a discharging mechanism, and the discharging mechanism may be attached at an appropriate time, or may be permanently installed similarly to the purifying mechanism. Or a combination of the two. The filter medium, the water-permeable container, and the space section forming means (legs, mounting table, etc.) constituting the purification mechanism are as described above. The discharge mechanism includes a (fixed) partition wall and a suction pump (including a suction pipe) in the method (1), and a through hole and a suction pump (including a suction pipe and the like) in the method (2). Yes, said (3) of the present invention
In the method (1), a sliding partition wall and a collecting container are used.
The (fixed) partition wall, the through hole, and the slide partition wall have no function of discharging the sediment by themselves, but they are included in the discharging mechanism because they assist or discharge the sediment. As described above, the water purification device of the present invention can purify water with an extremely simple facility configuration.

The running water channel to which the water purification method and the water purification device of the present invention are applied includes rivers, agricultural waterways, homes, schools, food establishments, livestock establishments, and the like.
There is a channel for wastewater treatment facilities such as seawater. For example, in relatively narrow waterways such as narrow rivers (rivers) and artificial waterways of various facilities, the size of the water-permeable container is adjusted, and the water-permeable containers are arranged to fill the width of the waterway. You may. Also, in a relatively wide flowing water channel such as a general river, long side walls along the flow direction of flowing water are disposed on the left and right at appropriate intervals, and the permeable container is positioned between the side walls. May be arranged. still,
This side wall is formed of the same material as the partition wall,
In order to prevent the sediment from leaking from the lateral direction of the water-permeable container, the water-permeable container is generally installed so as to be higher than the upper end of the disposed water-permeable container.

In the case of laying in a river or the like where the water flow is strong, a wall material for suppressing water pressure and other components may be additionally provided on the upstream side.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. As shown in FIG. 1, the water-permeable container 2 has four legs 5 and can stand on its own, so that a space portion 6 is formed below the water-permeable container 2 at the time of disposition.

The filter medium 1 was prepared by mixing 0.2 kg of cement-based solidifying agent "Geolite" (solidifying agent manufactured by Chichibu Onoda Co., Ltd.) and 200 cc of water with 1 kg of sandy soil, and kneading the mixture to a diameter of 5 kg.
It was formed into a spherical shape of 0 mm. Further, as shown in FIG. 1, the permeable container 2 has a configuration in which an angle member (fence member) is assembled in a frame shape and wire meshes are stretched on four side surfaces and a bottom surface.

FIGS. 2 and 3 show an example in which the water purification method and the water purification apparatus of the present invention are applied to a human waste purification apparatus (circulation type aeration processing apparatus).
C is a water channel, D is an aeration layer, E is a pump, and F is a circulation pump device. In this example, a water-permeable container 2 ″ having a width corresponding to the width of the water channel C is used, and a sliding partition wall 12 is provided on the most distal end side and the last end side of the space 6. This sliding partition wall 12 is provided. In this case, the collection container 13 which is slidable up and down without being permanently installed is formed by combining an angle material and a wire mesh as shown in FIG. The collection container 13 can be easily attached to and detached from the upper end of the water-side wall surface of the aeration tank D by the mounting portion 14 provided above, and is attached to the lowermost deposition portion 15. The sediment is deposited by introducing running water containing the sediment from the inlet 16 formed on the upper front side, and a door 17 that can be opened and closed is provided on the back side of the depositing section 15, and is deposited after being removed. The precipitate is removed from the depositing section 15 It can be issued.

In the example shown in FIGS. 2 and 3, when the water to be treated flows from the urine receiving tank B to the aeration tank D in the water channel C with the sliding partition wall 12 closed, the contamination included in the running water is reduced. The substance as a precipitate enters the space 6 from the water-permeable container 2 ″, flows down with the water flow, is blocked by the sliding partition wall 12, and is accumulated. The slide type partition wall 12 is slid upward to open the slide type partition wall 12. With the opening of the slide type partition wall 12, running water containing a high concentration of sediment enters the accumulation part 15 from the inlet 16 through the inlet 16.
Captured. The sediment can be taken out by removing the collecting container 13 outside the system and opening the door 17 as described above.

The running water from which the sediment has been removed climbs over the sliding partition wall 12 and falls into the aeration tank D. At this time, the air is entrained, so that air (oxygen) is supplied to the water to be treated in the aeration tank D. I do. Then, by circulating the water to be treated from the pump E installed in the aeration tank D to the human waste receiving tank B through the circulation pump device F, the circulation, aeration and water purification are repeated.

[Purification Test 1] The purification water channel used for the test is substantially the same as that of a circulation type night soil purification device, and a permeable container (with legs) in which an elongate water channel is filled with a filter medium is placed underneath. They were arranged so that a space was formed. The water flow could be adjusted by a submersible pump. The filter medium was prepared by mixing 0.2 kg of cement-based solidifying agent “Geolite” (solidifying agent manufactured by Chichibu Onoda Co., Ltd.) and 200 cc of water with 1 kg of sandy soil, and kneading the mixture to a diameter of 5 kg.
"Spherical filter media" molded into a spherical shape of 0 mm, 40-60 m
Two types of “Reki-like filter media” consisting of m crushed stones were used. Then, the raw water prepared in advance is purified, and ss after 2 weeks,
Changes in COD, TN, and TP were measured. The results are shown in Table 1.

[Table 1]

As is clear from Table 1, whether the filter medium is a spherical filter medium obtained by solidifying an earth-based material or a reciprocating filter medium made of crushed stone, the water quality is improved and the value that can be discharged to a general river is determined. It was confirmed that it became. It was also confirmed that the use of a spherical filter medium obtained by solidifying an earth-based material had a higher purification effect than the use of a crushed stone filter medium. In addition, when a separate filter medium was laid directly on the water channel and deposited, and a similar test was performed,
It was confirmed that sediment stayed on the surface of the filter medium and between the filter media, and the purification effect was lost in about 2 to 4 weeks.

[Purification Test 2] Purification test was performed using human waste as raw water and using the circulation type human waste treatment apparatus (aeration treatment apparatus) shown in FIGS. 2 and 3 as it is. The change in BOD was measured every week until 6 weeks later, and the pH, ss, TN, T
The change in -P was measured. The results are shown in Table 2.

[Table 2]

As is clear from Table 2, it was confirmed that good results were obtained even when the present invention was applied to purification of human urine. In addition, when the same test was performed by separately laying and depositing a filter medium directly on the water channel, a large amount of sediment stayed between the filter medium surface and the filter medium, and the purification effect was lost in about 1 to 2 weeks. Was confirmed.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and may be implemented in any way unless the configuration described in the claims is changed. Can be.

[0039]

In summary, in the water purification method of the present invention, the sediment of the fouling substance is settled in the space and discharged from the space out of the flowing water channel, so that the sediment is not retained between the filter media. The filtration action is not lost in a short time. Therefore, water purification is performed continuously. In addition, microorganisms inhabit the surface of the filter medium and between the filter media, and provide a place for microbial growth.However, the water flow is appropriately relaxed, and the fresh water flow is supplied without stagnant due to stagnant running water. Water purification is also actively carried out. further,
In the water purification method of the present invention, since the water purification is performed while the filtering action is continuously maintained, it is not necessary to frequently replace the filter medium as in the related art.

In particular, since a porous material mainly composed of an earth-based material is used as a filter material, it has excellent adsorptivity, and not only the surface and between the filter materials, but also the inside of the filter material becomes a home for microorganisms, and the microorganisms remove organic matter. Oxidatively decomposes. Furthermore, microorganisms inhabit the soil-based material constituting the filter medium from the beginning or after the formation, and oxidatively decompose organic substances in running water. for that reason,
Suspended suspended solids (SS), biological oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN) contained in running water Water quality can be reduced. Further, the filter medium used and exchanged after being used for a certain period can be easily crushed by a heavy machine or the like, and can be returned to soil or reused at a construction site such as embankment. In addition, since the pulverized material has a low cement content and the soil material contains phosphorus and nitrogen, it can be reused as fertilizer. Furthermore, as described above, sludge or soft soil can be used as an earth-based material, and can be applied to a road foundation or the like after pulverization. In this case, it also contributes to ground improvement and environmental problems.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a water-permeable container used in the present invention.

FIG. 2 is a plan view showing an example of application to a circulation type aeration apparatus.

FIG. 3 is a side view of FIG. 2;

4 (a) is a perspective view showing a detachable collection device attached to the device of FIG. 2, and FIG. 4 (b) is a side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter medium 2 Permeable container 5 Leg part (space part formation means) 6 Space part

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 24/02-24/26 B01D 39/00-39/20 C02F 3/02-3/10

Claims (2)

(57) [Claims] 1. Clay, silt, sandy soil, sludge, softness
100 parts by weight of earth or earth-based material combining these
And, selected from cement and solidifying agent or cement-based solidifying agent
In a state in which a large number of filter media composed of 10 to 35 parts by weight of one or more materials are filled in a water-permeable container, the water-permeable container is installed in a flowing water channel so that a space is formed below the medium, and Are formed in parallel in the length direction to form a packed layer of filter media that is continuous in the length direction at the top and a space that is continuous in the length direction below, and can be opened and closed under the water below the space
A separate partition wall is provided, and fouling substances contained in running water are captured and settled by a filter medium, and sediment that has settled out of the water-permeable container into the space is separated from the sediment with the partition wall closed.
It is collected near the upper side of the cut wall and the collection container is located below the lower side of the water.
Open the partition wall with
A water purification method characterized by introducing and recovering water. 2. Clay, silt, sandy soil, sludge, softness
100 parts by weight of earth or earth-based material combining these
And, selected from cement and solidifying agent or cement-based solidifying agent
Numerous filters consisting of 10 to 35 parts by weight of one or more materials
Media and a filter which is filled with the filter media and arranged in parallel in the longitudinal direction.
When the aqueous container and the permeable container are installed in a flowing water channel,
When a packed bed of filter media that is continuous in the length direction is formed
To form a continuous space in the length direction downward
Purifier permanently provided in the running water channel with space forming means
Provide a partition wall that can be opened and closed on the underside of the structure and space,
The sediment in the space portion with the partition wall closed
Is collected near the upper side of the partition wall and collected below the lower side.
With the container installed, open the partition wall and settle in the collection container.
It has a discharge mechanism that introduces and collects artifacts.
Water purification equipment .