KR101131389B1 - an elliptical body shaped system for treating first flush stormwater and decreasing non-point contaminants using nonven-filter - Google Patents

Abstract

The present invention is an elliptical shape using a filter material in which non-point contaminants such as oil components and suspended solids, including solid substances contained in the initial rainwater flowing into the rain pipe, are processed into geo-textile fibers in an ellipsoid structure. The solids of SS (Suspended solids) component are removed by gravity by being moved to the surface and space of the filter cylinder manufactured by coalescing to increase the particle size.The oil component, micro suspended solids, heavy metal, PAHs, etc. Regarding the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven fabric filter using the characteristics of adsorbing, the present invention is provided with an inlet 10 and an outlet (not shown) solids that are introduced during initial rainwater Treatment tank 14 of the ellipsoid to remove the, and the ellipsoidal chamber type is installed inside the treatment tank 14 to separate the oil component from rainwater The solids remover (16), and the solids remover (16) is provided with a filter cylinder (20) consisting of an outer wall and an inner wall of an oval shape made of a perforated plate having a plurality of through holes (18) to enable excellent penetration. Filling the nonwoven fabric filter 22 in the filter cylinder 20, the nonwoven fabric filter 22 is made of a non-woven fabric (geo-textile) fiber fabric, a non-woven fabric fabric of 3 to 5 mm in diameter 14 ~ 30 After cutting to 50 ~ 85cm in length to form a cylindrical body of ㎜ and cutting the center part at intervals of 30 ~ 50mm from the center in the longitudinal direction, one end is passed through the incision and artificially formed in a spiral shape, and of the filter cylinder 20 An air supply pipe 24 for supplying air is installed vertically between the outer wall and the inner wall, and a through hole (not shown) is formed at the center of the bottom surface to discharge treated rainwater, and a discharge pipe 26 is disposed below the through hole. Installed) In addition, the upper side of the through-hole is provided with a pollutant cut off tube 28 in the interior of the solid remover 16, the bottom of the pollutant cut off tube 28 is located inside the solid remover 16 A discharge port 30 for discharging rainwater is installed, the discharge port 30 is interlocked with the floating body 32 installed inside the pollutant cutoff tube 28, the pollutant cutoff tube 28 is A guide body 34 is provided to guide the floating body 32 rising and falling in accordance with the water level to the discharge port 30 so as to close the discharge port 30 when the floating body 32 descends. The floating body 32 is made of a material and weight that can float between the surface of the oil and the surface of the floating surface of the rain can rise and fall according to the increase and decrease of the water level.

Nonwoven Filter, Filter Body, Oval, Floating Body

Description

An elliptical body shaped system for treating first flush stormwater and decreasing non-point contaminants using nonven-filter}

The present invention relates to the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using a nonwoven fabric filter, more specifically, non-point pollutants such as oil components and suspended solids, including solids contained in the initial rainwater flowing into the rain pipe. SS (Suspended solids) component after increasing the particle size by coalescing while moving between the surface and the space of the filter cylinder made of elliptical shape using a filter material processed with geo-textile fibers in the ellipsoid structure The solid material of is related to the initial excellent treatment and non-point pollution reduction system of the ellipsoid using the nonwoven filter using the property of sedimentation to the bottom by gravity and adsorption of oil components, fine suspended substances, heavy metals, PAHs, etc.

In general, there are vortex type, screen type, and filtration type as an apparatus type treatment facility for separating oil components and nonpoint contaminants introduced into rainwater pipes during the initial rain (rainfall). It is used to separate large particles such as milk cartons, cans, and wood chips, using the stream of rainwater flowing into the treatment tank by the vortex principle. It is used to remove the solid particles of smaller particles by using the rotary flow and the screen, and the filtration type removes the nonpoint pollutants in the early rainwater through the cartridge filled with media such as zeolite, perlite, GAC, PEAT MOSS, etc. The treatment efficiency is higher than the vortex type or the screen type, but the media replacement cost is high, and the initial construction cost is high and the maintenance is different to other facilities. We are it is difficult.

In particular, unlike the wastewater treatment, the irregularity of rainfall causes the cartridges filled with media such as zeolite, perlite, GAC, and PEAT MOSS to prevent soil flow when membranes are formed on the surface of the cartridge due to the inflow of soil soil and oil. Due to the maintenance problems such as cleaning the surface of the cartridge periodically or replacing the filter medium, the Ministry of Environment's National Audit has been pointed out as a treatment facility.

In addition, most of the filter-type treatment facilities installed by the treatment facility flow calculation method that applied the initial rainfall of 5mm per hour to the floor area in accordance with the current environmental law have a constant porosity like the fixed-bed SAND FILTER. The initial rainwater containing a large amount of water pollutants, without treating the initial rainfall, has flowed back to the BY-PASS pipe and leaked to the rainwater main building frequently, which has been pointed out in the National Audit of the Ministry of Environment.

The problem is that the filter type treatment facilities adopting the existing filter cartridges have to adopt a method of horizontally arranging the filter cartridges, which is a structure constrained by space utilization, in order to process the initial rainwater. Due to the excessive amount of treatment facilities, there was a problem with the installation place because the treatment facilities had to be arranged in parallel in the case of treatment facilities of 600㎥ or more per hour.

Therefore, it is required to develop treatment facilities that can utilize space in filtration-type initial excellent and non-point pollution reduction facilities, and especially when rainfall is restricted in river tributaries including water supply protection areas at the time when regulations on non-point pollution sources are tightened. Soil inflow into the soil causes water pollution by itself, but various contaminants contained in the soil have a great impact on the water environment.

Accordingly, the present invention has been made in order to solve the above problems according to the prior art, the object of the present invention is non-point pollution such as oil components and suspended solids, including solids contained in the initial rainwater flowing into the storm pipe The material is incorporated into the ellipsoid structure using geo-textile fibers in the shape of an ellipsoidal body. The solids of the components are removed by sedimentation to the bottom by gravity and provide an excellent initial treatment and non-point pollution reduction system for ellipsoids using nonwoven filter using the characteristics of adsorbing oil components, fine suspended substances, heavy metals, PAHs, etc. .

In addition, another object of the present invention is economical by removing the oil components and fine suspended solids, heavy metals, PAHs components and the like only by the physical action by the filter processing the non-woven fabric shape, the filter in the filter cylinder when the filter is washed It is easy to remove solids deposited on the filter by simply spraying high pressure air or water in the filled state, and it is easy to maintain the initial excellent treatment and non-point pollution reduction system of the ellipsoid using nonwoven filter. To provide.

Another object of the present invention is to use a structure of an ellipsoid to attenuate the work of the rectangular structure, and to block the formation of the channel between the inlet and the outlet of the treatment tank, and to smoothly induce the flow of the nonwoven fabric. It is to provide an initial excellent treatment of ellipsoids using a filter and a nonpoint pollution reduction system.

In addition, the present invention is the ellipsoidal shape of the filter cylinder with the structure of the ellipsoid body to relax the initial rain flow through the filter cylinder by extending the surface of the filter cylinder contact surface of the initial rain 2 to 4 times the same volume relative to It is to provide an excellent initial treatment and non-point pollution reduction system of the ellipsoid using the nonwoven filter having the effect of extending the residence time.

However, the object of the present invention is not limited to the above-mentioned object, other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

Features of the initial excellent treatment and non-point pollution reduction system of the ellipsoid using the nonwoven filter according to the present invention for achieving the above object,

An inlet 10 and an outlet (not shown) and an ellipsoidal treatment tank 14 for removing solids introduced during initial rain, and

It is composed of an ellipsoidal chamber type solids remover 16 installed inside the treatment tank 14 to separate oil components from rainwater.

The solids remover 16 is provided with a filter cylinder 20 consisting of an outer wall and an inner wall of an oval shape made of a perforated plate having a plurality of through holes 18 so as to allow excellent penetration therein, and in the filter cylinder 20 a nonwoven fabric. The filter 22 is filled,
The non-woven fabric filter 22 is made of a non-woven fabric (geo-textile) fiber fabric, and cut the non-woven fabric fabric of thickness 3 ~ 5㎜ to a length of 50 ~ 85cm to form a cylindrical body of 14 ~ 30㎜ in diameter from the longitudinal center After cutting the center at intervals of 30 ~ 50mm, one end is passed through the incision and artificially formed in a spiral shape.

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The air supply pipe 24 for supplying air between the outer wall and the inner wall of the filter cylinder 20 is installed vertically,

A through hole (not shown) is formed to discharge the treated rainwater in the center of the bottom surface, and a discharge pipe 26 is connected to the lower side of the through hole, and the inside of the solid remover 16 is disposed above the through hole. Pollutant car break pipe 28 is installed,
The bottom of the pollutant cut off tube 28 is provided with a discharge port 30 for discharging rainwater in the interior of the solids remover 16, the discharge port 30 is the inside of the pollutant cut off tube 28 It is linked with the floating body 32 installed in,
The pollutant auto shut off pipe (28) guides the floating body 32, which rises and falls according to the water level, to the discharge port 30 so as to close the discharge port 30 when the floating body 32 falls. Guide body 34 is provided,

The floating body 32 is made of a material and weight that can float between the surface of the oil and the surface of the floating surface of the rain can rise and fall according to the increase and decrease of the water level.

As described above, the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven fabric filter according to the present invention has the same volume as other filtration type treatment facilities using only the horizontal floor area as a structure capable of maximizing the treatment tank volume. In contrast, the filter surface area can be maximized to improve the flow-through capability and to increase the retention time of the initial rainfall through the filter layer, which increases the treatment capacity and treatment efficiency. Since the flow is naturally induced by this water position, there is no need for a separate power unit, so maintenance is easy, economical and versatile.

In addition, the present invention, as the cylindrical body of the filter processing the geo-textile fibers are elastically repeated deformation and restoration, as the particles move between the surface and the space of the cylindrical body sedimentation of suspended solids and oil components, As the flotation action is smoother, the pollutant removal performance is further improved.

In addition, the present invention minimizes the attachment of solids because the elastic deformation and the restoring action of the cylindrical body shake off the solids attached to the surface of the cylindrical body, thereby minimizing the increase in the weight of the filter in which the nonwoven fabric is processed. It is effective in preventing the nonwoven filter from sinking to the floor and losing its function.

In addition, the present invention has a cylindrical configuration can remove the solids attached to the surface of the cylindrical body only by high-pressure injection of air or water without having to take out from the filter cylinder during washing, the cylindrical body by the pressure of the high-pressure sprayed air or water By repeating the elastic deformation and restoring action, the removal of the deposit is more effective.

Although the present invention has been described only with respect to the embodiments described, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such modifications or changes will fall within the scope of the appended claims. .

Hereinafter, the preferred embodiment of the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven fabric filter according to the present invention. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

1 is a sectional view of the processing system of the present invention seen from the front, and FIG. 2 is a plan view showing the processing system of the present invention.

1 to 2, the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven fabric filter according to the present invention,

An inlet 10 and an outlet (not shown) and an ellipsoidal treatment tank 14 for removing solids introduced during initial rainwater;

It is composed of an ellipsoidal chamber type solids remover 16 installed inside the treatment tank 14 to separate oil components from rainwater.

In addition, the ellipsoidal chamber type solids remover 16 includes an elliptical outer wall and an inner wall made of a perforated plate having a plurality of through holes 18 so as to enable excellent penetration. The nonwoven fabric filter 22 is filled in the cylinder 20, and is comprised. Here, the air supply pipe 24 for supplying air between the outer wall and the inner wall of the filter cylinder 20 is installed vertically.

The nonwoven filter 22 removes solids from rainwater passing through the filter cylinder and separates oil components.

Here, the nonwoven filter 22 is made of a non-woven fabric (geo-textile) fiber nonwoven fabric and cut the nonwoven fabric fabric having a thickness of 3 to 5 mm into a cylindrical body having a diameter of 14 to 30 mm to a length of 50 to 85 cm 20 ~ It is formed in a spirally twisted shape of 40mm, and the filter shape is not deformed by buoyancy and water pressure, and is elastically deformed and restored in a constant size chamber by the inflow flow rate and flow rate, thereby reducing the contact surface area of the filter material to a single volume. It expands to the maximum and efficiently removes non-point pollutants (oil & grease, suspended solids, heavy metals, PAHs, etc.) in the initial rainfall by increasing the residence time inside the initial rainwater filter media.

In addition, the cutout portion of the nonwoven fabric filter 22 is twisted in a double angle with an inclination angle of 45 degrees with respect to the central axis, thereby preserving the shape without loosening the flow of high-pressure air in the chamber, and depending on the application, the thickness is 3 to 5 mm. The nonwoven fabric fabric is cut into lengths of 50 to 85 cm to form a cylindrical body having a diameter of 14 to 30 mm, and then cut at intervals of 30 to 50 mm from the longitudinal center.

The process of the non-woven fabric filter 22 is bent the piece of non-woven fabric, roll the end to pass through the cut portion in the center, and pulled out in the original direction.

The specific gravity of the nonwoven filter 22 is between 0.97 and 0.98, and is irregularly arranged in the downward direction on the water surface.

On the other hand, in the center of the bottom surface of the ellipsoidal chamber type solids remover 16 is formed through-hole (not shown) for discharging rainwater.

A discharge pipe 26 is connected to the lower side of the through hole of the solids remover 16, and the discharge pipe 26 protrudes through an outlet of the treatment tank 14.

In addition, a pollutant cutoff tube 28 inside the solid remover 16 is installed at an upper side of the through hole of the solid remover 16, and a bottom of the pollutant cutoff tube 28 is disposed at the bottom of the solid remover 16. The outlet 30 for discharging rainwater in the interior of the 16 is installed, the outlet 30 is linked to the floating body 32 installed inside the pollutant car pipe 28. At this time, the floating body 32 is made of a material and weight that can float between the surface of the oil and the surface of the floating surface of excellent rain can rise and fall according to the increase and decrease of the water level.

In addition, the pollutant cut-off pipe (28) can guide the floating body 32, which rises and falls according to the water level to the discharge port 30 to close the discharge port 30 when the floating body 32 falls. There is a guide body 34 to make it.

Referring to Figures 3 to 6 the operation of the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven filter according to the present invention configured as described above are as follows.

3 is a cross-sectional view of a normal processing system in the treatment system of the present invention, FIG. 4 is a cross-sectional view of a treatment system in an initial rainfall in the treatment system of the present invention, FIG. 5 is a cross-sectional view of a treatment system in a rainy rainfall in the treatment system of the present invention. 6 is a cross-sectional view of the processing system during cleaning in the processing system of the present invention.

As shown in FIG. 3 and FIG. 6, in the state where the surface of the treatment tank 14 is low, the nonwoven filter 22 of the solids remover 16 has a volume ratio of 50 to 65% to the filter cylinder 20 of the ellipsoid. Since it is filled, a space portion is formed in the upper portion of the filter cylinder 20.

And, as shown in Figure 4, when rain, that is, during the rain, the rain is introduced through the inlet of the treatment tank 14, non-woven fabric filled in the filter cylinder 20 of the solids remover 16 As the filter 22 is raised, the floating body 32 of the pollutant blocking device 28 which is linked with the outlet 30 is raised.

And, as shown in Figure 5, in the case of excellent rain shower, when the inflow flow rate increases rapidly, the nonwoven fabric filter 22, that is, the filter layer rises, the effect of expanding the filter surface area is a large amount of initial excellent inflow instantaneously To process

Then, the floating body 32 of the pollutant blocking device 28 that is linked with the discharge port 30 is further raised.

Accordingly, the discharge port 30 is further extended, and the rainwater in the solids remover 16 is discharged through the discharge pipe 26.

In other words, since the floating body 32 is spaced apart from the discharge port 30 in the state of high water level, the discharge port 30 may be opened to discharge rainwater, and if the water level becomes low or the oil layer becomes thick, the floating body ( 32) is gradually lowered, and when the water level is lower than the outlet, the floating body 32 to close the outlet before the oil layer is discharged through the outlet, thereby preventing the oil from being discharged to the outlet.

On the other hand, as shown in Figure 6, when cleaning the initial excellent treatment and non-point pollution reduction system of the ellipsoidal body using the nonwoven fabric filter according to the present invention, open the lid of the treatment tank 14, to the treatment tank 14 The sludge discharge pipe (not shown) can be inserted.

The above detailed description is merely illustrative of the present invention, which is used only for the purpose of illustrating the present invention and is not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a sectional view of the treatment system of the present invention seen from the front,

2 is a plan view showing a processing system of the present invention;

3 is a cross-sectional view of an ordinary processing system in the processing system of the present invention;

4 is a cross-sectional view of an initial rainfall treatment system in the treatment system of the present invention;

Figure 5 is a cross-sectional view of the rain shower during the treatment system of the present invention,

6 is a cross-sectional view of the processing system during cleaning in the processing system of the present invention.

<Description of the symbols for the main parts of the drawings>

10: inlet

14: treatment tank of ellipsoid

16: ellipsoidal chamber type solids remover

18: through hole

20: filter cylinder

22: nonwoven filter

24: air supply pipe

26: discharge pipe

28: pollutant vehicle

30: outlet

32: floating body

Claims (3)

delete delete An inlet 10 and an outlet (not shown) and an ellipsoidal treatment tank 14 for removing solids introduced during initial rain, and It is composed of an ellipsoidal chamber type solids remover 16 installed inside the treatment tank 14 to separate oil components from rainwater. The solids remover 16 is provided with a filter cylinder 20 consisting of an outer wall and an inner wall of an oval shape made of a perforated plate having a plurality of through holes 18 so as to allow excellent penetration therein, and in the filter cylinder 20 a nonwoven fabric. The filter 22 is filled, The non-woven fabric filter 22 is made of a non-woven fabric (geo-textile) fiber fabric, and cut the non-woven fabric fabric of thickness 3 ~ 5㎜ to a length of 50 ~ 85cm to form a cylindrical body of 14 ~ 30㎜ in diameter from the longitudinal center After cutting the center at intervals of 30 ~ 50mm, one end is passed through the incision and artificially formed in a spiral shape. The air supply pipe 24 for supplying air between the outer wall and the inner wall of the filter cylinder 20 is installed vertically, A through hole (not shown) is formed to discharge the treated rainwater in the center of the bottom surface, and a discharge pipe 26 is connected to the lower side of the through hole, and the inside of the solid remover 16 is disposed above the through hole. Pollutant car break pipe 28 is installed, The bottom of the pollutant cut off tube 28 is provided with a discharge port 30 for discharging rainwater in the interior of the solids remover 16, the discharge port 30 is the inside of the pollutant cut off tube 28 It is linked with the floating body 32 installed in, The pollutant auto shut off pipe (28) guides the floating body 32, which rises and falls according to the water level, to the discharge port 30 so as to close the discharge port 30 when the floating body 32 falls. Guide body 34 is provided, The floating body 32 is made of a material and weight that can float between the surface of the oil and the surface of the floating surface of excellent rain, the ellipsoidal body using a nonwoven fabric filter, characterized in that it can be raised and lowered according to the increase and decrease of the water level. Initial excellent treatment and nonpoint pollution reduction system.

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