KR101130569B1 - Apparatus for eliminating non-point contaminant of which the filtering efficiency is improved - Google Patents

Abstract

PURPOSE: A nonpoint contaminant eliminating apparatus with improved filtering efficiency is provided to easily cost-effectively maintain the apparatus by omitting a separate power generating unit. CONSTITUTION: A nonpoint contaminant eliminating apparatus includes a first treating bath(100), a second treating bath(200), and a third treating bath(300). A gravity mud chamber(10) is installed at the first treating bath. A first polymer filter(12) is filled in a first filter container(11) through which treating water is capable of passing. Solid materials are precipitated at the bottom of the first treating bath by being filtered through the polymer filter. Oil components are suspended from the treating water in the polymer filter passing process and are discharged through the outlet of the first treating bath. An oil-water separating chamber(20) is installed at the second treating bath. A second polymer filter(22) is filled in a second filter container. A filter(30) is installed at the third treating bath. A non-woven fibrous filter(32) is filled in a third filter container.

Description

Apparatus for eliminating non-point contaminant of which the filtering efficiency is improved}

The present invention relates to an apparatus for removing non-point contaminants. In particular, non-point contaminants, such as suspended solids and oil components contained in wastewater and rainwater, are separated and removed by using a polymer filter and a nonwoven filter. It relates to a removal device.

Boiling point pollutants are discharged from a large area, washed out by rainwater, and discharged from scattered pollutants that do not know exactly where they are coming from.For example, oil components, tire dust, heavy metals, And other fine suspended solids.

The non-point pollutant removal device employs a method using a specific gravity difference between oil and water, and a method using stoke's law based on a specific buoyancy difference and flow of the mixture according to the buoyancy.

The method using the specific gravity difference is to introduce contaminated water containing oil into the treatment tank, and when it is settled, the oil floats on the water and condenses, separating into two liquid phases of oil and water. If it is 1mm or more, oil and water can be separated relatively easily, but if oil is split into small pieces through the flow of fluid, and the diameter is about 1 ~ 1.5㎛, the oil droplets take a long time to float and flocculate. have.

The method using Stokes law refers to passing oiled water through a coalescing plate pack in which polypropylene corrugated or egg-shaped plates are arranged in multiple stages to increase the effective contact area. When used for a long time, the viscous sludge combined with oil and suspended solids is deposited on the plate coalescing pack, which impedes the passage of fluid, thereby causing a decrease in treatment efficiency. In particular, when the viscosity is high, such as grease, bunker C oil, animal oil, etc., this problem is more serious.

In addition, early excellent treatment facilities employing sand filter type filter cartridges using particulate materials such as sand, anthracite, illite, and zeolite have high initial solids removal rate, but they are eluted during rainfall in roads, parking areas, and industries. As a result, microcoal mucosa formed on the surface of the filter cartridge was formed by the fine suspended solids containing the oil component discharged into the rain pipe, thereby frequently blocking the filter layer inlet.

As described above, the conventional non-point pollutant removal device (oil-water separation and initial excellent treatment facility) has a poor treatment efficiency, and as the treatment efficiency decreases, the area of the treatment facility is increased to increase the treatment efficiency. There is a disadvantage. In addition, if the contaminant accumulated in the treatment tank reaches a certain amount due to the delay of treatment, the filter network is blocked, resulting in overflow of contaminants and backflow of the influent, which causes the problem of losing normal treatment function.

The problem to be solved by the present invention is to use a polymer filter and a non-woven fabric filter, the filter is not clogged by viscous sludge, as well as the rise of the oil component is efficiently made by the sediment of the solid and the waste water through the rise of the oil component The present invention provides a non-point contaminant removal device that removes contaminants contained in rainwater and further improves filtration efficiency by a filter.

The non-point contaminant removal device according to the present invention for achieving the above object comprises a first treatment tank, a second treatment tank, and a third treatment tank each having an inlet and an outlet, and gravity in the first treatment tank The mud chamber is installed, the oil and water separation chamber is installed in the second treatment tank, the filter is installed in the third treatment tank,

The gravity mud chamber,

Since the polymer filter is filled in the filter cylinder fabricated to allow the passage of the treated water, the solids in the treated water are not filtered out by the polymer filter and thus are precipitated under the first treatment tank, and the oil component in the treated water. Is coalesced in the process of passing through the polymer filter is installed on the outlet side of the first treatment tank to be discharged to the outlet of the first treatment tank with the treated water,

The oil and water separation chamber,

In the process of passing the polymer filter in the oil-water separation chamber by treating the water flowing into the inlet of the second treatment tank from the outlet of the first treatment tank by filling the polymer filter into the filter cylinder manufactured to allow the passage of the treated water. It is installed at the inlet side of the second treatment tank so that the oil component is coalesced to rise to the surface of the second treatment tank,

The filter,

The nonwoven fabric filter is filled in the filter cylinder, and is disposed below the inlet of the third treatment tank so as to cover the water surface so that the treated water flowing through the inlet of the third treatment tank passes from the top to the bottom. It features.

The filter cylinder of the gravity mud chamber is erected vertically, both left and right sides are installed to be inclined in the flow direction of the treated water, the front side at the inlet side of the first treatment tank and the back side at the outlet side of the first treatment tank. It is preferable that a plurality of through holes are formed for the passage.

The outlet of the first treatment tank is preferably installed on the side wall of the first treatment tank.

The polymer filter of the gravity mud chamber and the oil-water separation chamber is preferably filled by 80 to 85% of the total volume of the filter cylinder.

The filter cylinder of the gravity mud chamber is preferably blocked by 1/4 to 1/3 of the overall height of the filter cylinder so that the bottom of the back is blocked more than the bottom of the front or the top of the back.

The inlet of the second treatment tank is installed to be positioned below the second treatment tank, and the oil / water separation chamber is preferably installed horizontally above the inlet of the second treatment tank so that the treated water can pass through from below.

It is preferable that a cage tank is installed to be connected to the inlet of the second treatment tank, and the oil / water separation chamber is installed on the cage tank.

Preferably, the flow of treated water from the first treatment tank to the third treatment tank is made non-powered by the water level difference.

The polymer filter of the gravity mud chamber and the oil and water separation chamber has a hollow cylindrical shape in which a band of polyethylene material having a width of 8-25 mm, a length of 60-200 mm, and a thickness of 0.01 mm-0.1 mm is spirally wound around a virtual cylinder. It is preferable to have a helical body and to have a spiral cutout so that the shape is elastically deformed and restored by an external force. It is preferable that the said imaginary cylindrical body is 10-20 mm in diameter.

Preferably, the polymer filter has a gap of 5 to 25 mm between the spiral cutouts. It is preferable that the spiral cutout portion of the polymer filter is inclined at 45 to 65 degrees with respect to the central axis of the virtual cylinder.

The polymer filter preferably has a specific gravity of 0.85 to 0.95.

It is preferable that the said polyethylene is the ultra high molecular weight polyethylene of 6 million-11 million.

A plurality of treated water through-holes are formed in the filter cylinder of the gravity mud chamber and the oil-water separation chamber, and the treated water through-holes have a rounding shape that becomes narrower in a direction in which the treated water flows. desirable.

The outlet of the third treatment tank is preferably installed at a position lower than the inlet of the first treatment tank.

The discharge port of the third treatment tank is preferably obtained by providing a discharge pipe so that one end is located on the bottom surface of the third treatment tank and the other end is located at the water level on the side of the third treatment tank. Preferably, the inlet of the third treatment tank and the bottom inlet of the discharge pipe of the third treatment tank are located far from each other on the other side of the third treatment tank when viewed from above.

The bottom inlet of the discharge pipe bottom of the third treatment tank is biased to one side of the third treatment tank when viewed from above, and the side wall end of the discharge tube of the third treatment tank is located at the same position as the inlet of the first treatment tank.

The filter cylinder of the filter is formed with a through hole for inflow of treated water on the upper surface of the inlet side, and a through hole for discharging the treated water is formed on the lower surface of the bottom inlet of the discharge pipe so that the treated water flows laterally downward. It is desirable to exit.

Preferably, the third treatment tank has a square shape.

Preferably, a drainage hole is formed in at least one of the first treatment tank, the second treatment tank, and the third treatment tank, the drainage hole is installed in the drainage hole, and the nonwoven fabric filter is filled in the drainage hole.

The drain cylinder is formed by inserting the inner cylinder into the outer cylinder, the bottom of each of the inner cylinder and the outer cylinder is formed with a through hole for the passage of the treated water, the nonwoven fabric filter is filled between the bottom of the inner cylinder and the bottom of the outer cylinder. desirable.

The nonwoven fabric filter is preferably made into a butterfly shape by cutting a nonwoven fabric fiber having a thickness of 3 to 6mm to a width of 25 to 40mm, a length of 50 to 70mm and then fold and fix the center.

It is preferable that the first processing tank, the second processing tank, and the third processing tank are disposed so as to be sequentially positioned in the longitudinal direction in the entire processing tank having a rectangular shape when viewed from above.

The gravity mud chamber, oil and water separation chamber, and the filter is preferably an open rate per unit area for the passage of the treated water is 40 ~ 60%.

A filter cleaner is installed in at least one of the filter cylinder of the gravity mud chamber and the oil / water separator, and the filter cleaner preferably has an injection rod capable of blowing air or high pressure water into the filter cylinder.

According to the present invention, solids are removed and oil / water separation is performed only by the physical action of the polymer filter, and the flow of the treated water is naturally induced by the level difference, so that a separate power device is not required, and thus maintenance is easy and economical. It is effective in various kinds of oil components, so it has excellent versatility.

Since the polymer filter used in the present invention is composed of a cylindrical spiral body and is elastically deformed and restored, it is possible to remove solids attached to the surface of the polymer filter by only high pressure injection of air or water without having to take it out of the filter cylinder. Cylindrical helical bodies are repeatedly elastically deformed and restored by the pressure of air or water, thereby removing the deposit more effectively.

The treatment facility according to the present invention has an advantage that the inlet of the first treatment tank and the outlet of the third treatment tank form a smooth gradient so that it can be easily connected to the existing storm pipe. The present invention has a very good filtration efficiency since the path becomes considerably longer when the treated water passes through the filter.

1 and 2 are views for explaining a non-point pollutant removal apparatus according to the present invention;
3 to 6 are views for explaining the polymer filter 12;
7 and 8 are views for explaining the gravity mud chamber 10;
9 to 12 are views for explaining the filter cylinder (11);
13 and 14 are views for explaining the nonwoven fabric filter 32;
15 and 16 are views for explaining the process of installing the drain container (410, 420);
17 is a view for explaining the elliptical shape of the entire treatment tank 1 of the non-point pollutant removal device according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are merely provided to understand the contents of the present invention, and those skilled in the art will be able to make many modifications within the technical scope of the present invention. Therefore, the scope of the present invention should not be construed as being limited to these embodiments.

1 is a plan view for explaining a non-point pollutant removal apparatus according to the present invention, Figure 2 is a front view of FIG. As shown in Fig. 1 and Fig. 2, the non-point contaminant removing apparatus according to the present invention is the first treatment tank 100, the second in order in the longitudinal direction in the entire treatment tank 1 having a substantially rectangular shape when viewed from above The treatment tank 200 and the third treatment tank 300 are installed to be located.

[First Treatment Tank 100]

The treated water flowing through the inlet 111 of the first treatment tank 100 passes through the gravity mud jamber 10 and is discharged to the second treatment tank 200 through the outlet 112. Gravity mud chamber 10 is installed on the outlet 112, the polymer filter 12 is filled in the filter cylinder (11). Gravity mud chamber 10 is a solid material in the treated water is filtered by the polymer filter 12 is not passed through to settle under the first treatment tank 100, the oil component in the treated water to the polymer filter 12 In the process of passing through the coalescence to rise and serves to discharge to the outlet 112 together with the treated water.

3 to 6 are diagrams for explaining the polymer filter 12. The polymer filter 5 has a width (W) of 8-25 mm, a length (L) of 60-200 mm, a thickness of 0.85 to 0.95 and a high molecular weight polyethylene of 6 million to 11 million as shown in FIG. 3. As shown in Fig. 4, a band (t) of 0.01 mm to 0.1 mm is spirally wound around a virtual cylinder having a diameter (d) of 10 to 20 mm to form a hollow cylindrical spiral body.

The reason for using ultra high molecular polyethylene as the material of the polymer filter 12 in the present invention is that the ultra high molecular polyethylene has high abrasion resistance, impact resistance and self-lubrication, strong chemical resistance and weather resistance, non-toxic, non-absorbing, electrical insulation This is because there is an overfrequency characteristic. In addition, the reason why the polymer filter 12 is a cylindrical spiral body is to float in water by minimizing weight to volume surface area.

When the polymer filter 12 is larger than the above-mentioned size, the weight is increased so that the polymer filter 12 does not float in water, so that oil-water separation and solids removal functions cannot be performed. On the contrary, if the size is too small, the surface area is small and the oil-separation and solids-removing performance is reduced, and if the weight is so light that the polymer filter 12 is completely suspended above the water, this also lowers the oil-water separation efficiency.

The cylindrical spiral polymer filter has a spiral cutout 12a during the spiral twisting process. The spiral cutout 12a has an inclination angle θ of 45 to 65 degrees with respect to the central axis x of the virtual cylinder, and also has a 5 to 25 mm gap s.

When the external force due to the flow pressure of the fluid or the adhesion between the adjacent polymer filter 12 is applied to the polymer filter 12 has a cylindrical shape as shown in Figure 5 bend or deflect or as shown in Figure 6 on the central axis (x) Various elastic complex deformations such as eccentric deformation are performed, and when the external force is removed, the cylindrical shape is elastically restored again. The spiral cutout 12a serves to smoothly perform such deformation and restoration.

If such deformation and restoration are actively performed, since solids are not fixed to the polymer filter 12, the self-weight of the polymer filter 12 may be prevented from increasing. Increasing the weight of the polymer filter 12 itself is undesirable because the polymer filter 12 sinks to the bottom and loses its function.

If the inclination angle θ of the spiral cutout 12a is greater than 65 degrees, the cylindrical elastic force is so weak that the cylindrical shape is easily deformed even with a small external force, and if the degree of deformation is severe, the original shape may not be restored. In addition, when the inclination angle of the spiral cutout 12a is smaller than 45, the elastic force of the cylindrical shape is so strong that the degree of elastic deformation may be too small or the elastic deformation may not be achieved.

7 and 8 are views for explaining the gravity mud chamber 10. 9 to 12 are views for explaining the filter cylinder 11 of the gravity mud chamber 10, Figure 9 shows the front of the filter cylinder 11, Figure 10 is the back of the filter cylinder (11) 11 is for explaining the through hole 13a of the filter cylinder 11. 12 is a diagram for explaining the filter cleaners 15 and 16.

9 to 12, the filter cylinder 11 of the gravity mud chamber 10 has a thickness of 2 to 3 mm on the front side at the inlet 111 side and the rear side at the outlet 112 side to allow passage of the treated water. The perforated plate 13 has a plurality of through holes 13a having a diameter of 6 mm to 9 mm and a pitch of 8 mm to 12 mm, depending on the processing flow rate. Here, the pitch refers to the interval between the through holes 13a.

Table 1 below summarizes the open ratio per unit area of the gravity mud chamber 10, the oil / water separation chamber 20, and the filter 30. Conventionally, the open rate is only 22.6%, the flow rate is small, and the clogging of the filter cylinders 11, 21, and 31 due to the suspended matter is frequently difficult to maintain and economical, but in the present invention, the open rate is low. 40 to 60% of these problems were solved. This increase in open rate is also beneficial in the backwash process of the filter.

division Per unit area
OPEN rate purpose of use 5 ° diameter, 10 mm PITCH 22.6% Gravity mud chamber, SBM chamber 6 ° diameter, PITCH 8mm, 50.9% Gravity mud chamber, SBM chamber 6 ° diameter, 9 mm PITCH, 40.2% Gravity mud chamber, SBM chamber Diameter 7ø, PITCH 10mm 44.4% Gravity mud chamber, SBM chamber 8 ° diameter, PITCH 10mm 57.9% Gravity Mud Chamber, SBM Chamber, Filter 8 ° diameter, 12 mm PITCH 40.2% Gravity mud chamber, SBM chamber 9 ° diameter, 12 mm PITCH 50.9% Gravity mud chamber, SBM chamber, filter Diameter 16ø, PITCH 20mm 52% filter

The polymer filter 12 filled in the filter cylinder 11 removes solids from the treated water passing through the filter cylinder 11 and separates oil components. The polymer filter 12 is preferably filled in the filter cylinder 11 at 80 to 85% of the volume of the filter cylinder 11 in a natural state without external pressure to ensure fluidity in the filter cylinder 11. This filling density provides a space for fluid to flow between the polymer filters 12. Therefore, the space between the polymer filter 12 and the hollow inner space of the cylindrical body serve as a flow path for the treated water.

In the process of passing the treated water through the gravity mud chamber 10, the oil component is coalesced while moving between the surface and the space of the polymer filter 12. When the size of the coalesced oil droplets increases, it floats and flows toward the outlet 112, and the solid component drops to the bottom of the first treatment tank 100 through the lower part of the filter cylinder 11 by gravity and precipitates.

Since the polymer filter 12 is formed with a spiral cutout portion 12a in the longitudinal direction of the cylindrical body, the cylindrical shape is formed in FIGS. 5 and 6 due to the external force caused by the flow pressure of the fluid or the adhesion between the adjacent polymer filters 12. As shown, the elastic deformation and restoration are repeated. This elastic deformation action smoothes the rise of coalesced oil components while moving between the cylindrical surface and the space, and shakes off the solids attached to the cylindrical surface, thereby minimizing the attachment of solids and thus allowing the solids to pass through the filter cylinder (11). ) It is more smooth to fall to the bottom.

The filter cylinder 11 is vertically erected as shown in Figs. 9 and 10 and both left and right sides are installed to be inclined in the flow direction of the treated water. This is to increase the treatment efficiency by increasing the passage area of the treated water, and in particular, since the entire treatment tank 1 is elliptical, the flow components toward the left and right wings of the filter cylinder 11 contribute a lot to increase the treatment efficiency. Very preferred.

The bottom of the back of the filter cylinder 11, as shown in FIG. 10, the cover that blocks 1/4 to 1/3 of the overall height of the filter cylinder 11 so that the bottom or the back of the front is blocked more than the top It is preferable that the part H is formed. Then, as shown in FIG. 8, the treated water of the first treatment tank 100 increases to increase the water surface, so that the untreated water is discharged toward the outlet 112 even though the polymer filter 12 floats and a space portion is formed in the lower portion of the filter cylinder 11. Is prevented by the lower cover part H.

As shown in Fig. 11, the through hole 13a of the filter cylinder 11 is formed such that the circumferential portion 13b is formed in a rounded shape so that the diameter gradually narrows in the direction in which the treated water flows. Therefore, the treated water passing through the filter cylinder 11 is easily guided to the through hole (13a) and at the same time the flow rate is increased when passing through the through hole (13a) to facilitate the flow of the treated water.

12 is a diagram for explaining the filter cleaners 15 and 16. As shown in FIG. 12, the filter cleaners 15 and 16 include an air injection rod 15 vertically inserted into an intermediate bending portion of the filter cylinder 11, and the filter cylinder 11 from the air injection rod 15. It comprises an air spraying rod (16) branched from side to side along the left and right sides of the wing. A plurality of air spray holes are drilled through the air spray rods 16. Therefore, when the air is injected into the air injection rod 15 from the outside, the air is injected through the air injection hole of the air injection rod 16, the polymer filter 12 is cleaned while shaking. Of course, high pressure water may be used instead of air. In order to fill the polymer filter 12 in the filter cylinder 11, a material inlet 17 is provided in the filter cylinder 11.

When the polymer filter 12 is backwashed with high pressure air or high pressure water through the filter cleaners 15 and 16, the dirt attached to the polymer filter 12 is discharged to the through hole 13a. Therefore, as shown in Table 1, increasing the opening rate by the through hole 13a to some extent is helpful even during backwashing.

Since the solids in the first treatment tank 100 will be settled downward, the outlet 112 of the first treatment tank 100 is preferably installed on the side wall of the first treatment tank 100, the gravity mud chamber 11 ) Is preferably installed at the front end of the outlet 112 by attaching the left and right wing ends of the filter cylinder 11 to the side wall of the first treatment tank 100.

[2nd treatment tank 200]

Referring back to FIGS. 1 and 2, the outlet pipe 150 of the first treatment tank 100 is connected to the discharge pipe 150, and the discharge pipe 150 is located at the lower portion of the second treatment tank 200. To be installed. That is, the outlet of the discharge pipe 150 serves as the inlet 211 of the second treatment tank 200.

The oil and water separation chamber (SBM chamber) 20 is installed in the second treatment tank 200. Oil-water separation chamber 20 is for separating the oil component from the treated water from the first treatment tank 100 is installed horizontally above the inlet 211.

In order to temporarily trap the treated water flowing through the inlet 211, the cage tank 220 is installed at the end of the inlet 211, the oil-water separation chamber 20 is installed on the upper surface of the cage tank 220. The oil / water separation chamber 20 is formed by filling the polymer filter 22 in the filter cylinder 21. The filter cylinder 21 has a plurality of through-holes formed on the upper and lower surfaces of the filter cylinder 21 similarly to the filter cylinder 11 of the gravity mud chamber 10 to allow the treated water to pass therethrough.

The through hole of the filter cylinder 21 has the same shape as that of the gravity mud chamber 10, but only in this case, since the treated water will pass from the bottom up, the through hole becomes narrower from the bottom up. It is preferable that the filter cylinder 21 is filled with the polymer filter 22 at the same volume ratio as that of the gravity mud chamber 10.

The oil component contained in the treated water passing through the filter cylinder 21 from the bottom up is coalesced in the process of passing through the polymer filter 22 and floated on the water surface of the second treatment tank 200. Since the oil / water separation function by the polymer filter 22 has already been described above, the description thereof is omitted.

In the oil / water separation chamber 20, filter cleaners 40 and 41 are installed in the same manner as in the gravity mud chamber 10. The filter cleaner 40 includes an air injection rod 40 inserted into the filter cylinder 11 and an air injection rod 41 branched from both sides of the air injection rod 40. The air injection rod 21 is formed with a plurality of air injection holes.

The cleaning tank 50 is fitted into the cage tank 220. The cleaning tube 50 injects air so that vortices are formed in the treated water in the cage tank 220, thereby stirring the sediments that may be present or accumulated in the cage tank 220 so as not to agglomerate to the outside of the cage tank 220. It can be easily discharged. To this end, the cage tank 220 may be provided with a sludge discharge port (not shown). Of course, the sludge may be directly sucked out through the cleaning pipe 50. It is preferable that the bottom surface of the cage tank 220 is gradually inclined downward toward the edge from the inlet 211 so that sludge may be collected toward the cleaning tube 50.

The outlet 212 of the second treatment tank 200 is preferably formed in the lower portion of the second treatment tank 200, the inlet 311 of the third treatment tank 300 of the third treatment tank 300 It is preferable to be installed at the top. To this end, the second processing tank 200 is provided with a discharge pipe 250, one end of which is located on the bottom of the second processing tank 200 and the other end of which is located above the third processing tank 300.

[Third treatment tank 300]

The third treatment tank 300 is installed horizontally so that the filter 30 is located below the inlet 311. The discharge pipe 350 is installed in the third treatment tank 300. One end of the discharge pipe 350 is located at the bottom of the third treatment tank 300 and the other end is located at the water level on the side wall of the third treatment tank 300. Therefore, the treated water passing through the filter 30 from the top through the outlet 312a located at the bottom of the third treatment tank 300 exits to the outlet 312b located at the water surface.

It is preferable in terms of filtration efficiency that the treated water flowing through the inlet 311 passes through the filter 30 over a long distance. To this end, it is preferable that the inlet 311 and the outlet 312a of the third treatment tank 300 are located far apart from when viewed from above. That is, as shown in FIG. 1, the inlet 311 is preferably installed at one end of the third treatment tank 300 and the outlet 312a is preferably located at the other end. In addition, when the shape of the entire treatment tank 1 is elliptical, as shown in FIG. 17, the width of the third treatment tank 300 becomes narrow so that the filter 30 can be unfolded horizontally and be installed. Therefore, as shown in FIG. 1, it is preferable that the third treatment tank 300 has a quadrangular shape by making the entire treatment tank 1 into a quadrangular shape.

The filter 30 is formed by filling the nonwoven fabric filter 32 in the filter cylinder 31. The filter cylinder 31 has a through hole (not shown) formed on the upper surface of the side having the inlet 311 and a through hole for discharging the treated water on the lower surface of the side having the outlet 312a. Is preferably installed. This is to allow the treated water from the filter cylinder 31 to be discharged after passing a long path.

The treated water flows into the filter 30 from above and flows laterally out of the filter 30. That is, since the treated water does not pass through the filter 30 vertically straight down, but flows out to the side, and passes out after passing through a long path, the heavy metal and the water-soluble oil which were in the treated water by the nonwoven fabric filter 32. And heavy metals, PAHs components and the like are finally sufficiently removed.

Since the outlet 312b of the third treatment tank 300 is located at the water surface, the outlet 312b of the third treatment tank 300 and the inlet 111 of the first treatment tank 100 form a smooth gradient. In addition, although the outlet 312a of the bottom is positioned to one side of the third treatment tank 300, the treatment facility according to the present invention should be installed in the existing straight rainwater pipeline, so the outlet 312b of the side wall is viewed from above. It is preferable to be located at the center part.

In the case of the conventional Patent No. 886477, since the treated water passes through the nonwoven fabric filter from the top to the bottom, the pipe of the third treatment tank is connected to the inlet pipe of the first treatment tank when the site is installed in view of the characteristics of the rainwater pipe discharged by the natural gradient. It should be significantly lower than the bar, there is a disadvantage that can not normally be connected to the existing storm pipe. However, in the case of the present invention, since the height difference between the inlet 111 of the first treatment tank and the outlet 312b of the third treatment tank forms a smooth gradient, this installation problem is solved.

The outlet 312b of the third treatment tank 300 has a non-powered flow by the water level difference from the first treatment tank 100 to the third treatment tank 300. It is preferable to be installed lower than the inlet 111. At this time, if the outlet 312b of the third treatment tank 300 is set too low, the flow of the treated water between the first treatment tank 100 and the third treatment tank 300 becomes too rapid, so that the treated water may be polymerized. It may not be properly filtered by the filters 12, 22 and the nonwoven fiber filter 32.

 In the case of the conventional patent No. 886477, the treatment water outlet of the third treatment tank is significantly lower than the inlet pipe of the first treatment tank, so that minute oil components and fine suspended solids pass instantaneously, so that they are not adsorbed to the nonwoven filter and exit the outlet. However, this problem is solved by the present invention.

13 and 14 are views for explaining the nonwoven fabric filter 32. The nonwoven fabric filter 32 cuts the nonwoven fabric fabric having a thickness of 3 to 6 mm into a width of 25 to 40 mm and a length of 50 to 70 mm, and then folds the center to fix it with a stitching or the like to form a butterfly shape to prevent tangling between the filters. In addition, the weight to the volume surface area is to be small.

The nonwoven fabric filter 32 filters the solids of the fine components such as the earth and sand components in the initial excellent water to block the outflow to the outside of the treatment tank. It absorbs more than 20 times the weight of oil components such as automobile oil and fuel in the early rainfall, and the surface treatment of the antibacterial agent on the filter fiber can kill all known bacteria as well as mold algae, and kill the bacteria physically, not chemically. Therefore, it does not harm the environment, and even repeated use does not reduce the performance of the product. In addition, since it adsorbs heavy metal materials including rust, and can remove by adsorbing materials such as PAHs, non-point pollutants in the initial rainwater are more effectively removed.

[Drain bottle 410, 420]

In order to prevent the propagation of various pests in the summer treatment tank, and to prevent the decay of the stagnant treated water, especially in the case of the dry season, the first treatment tank 100, and the third treatment tank 300 in the drain hole (110) , 310 is preferred. Of course, such a drain hole may be installed in the second treatment tank 200. The drain holes 110 and 310 may be provided with drain containers 410 and 420 filled with the nonwoven fabric filter 132.

15 and 16 are views for explaining a process of installing the drain container (410, 420). As shown in FIG. 15, the drain containers 410 and 420 may include an outer cylinder 410 and an inner cylinder 420. Through holes 411 and 421 are formed at the bottom of the outer cylinder 410 and the inner cylinder 420, and the diameter D1 of the outer cylinder 410 is larger than the diameter D2 of the inner cylinder 420.

First, a drain hole having a diameter of 150 mm to 300 mm and a height of 200 mm to 400 mm is formed on the bottom of the first treatment tank 100, an anchor bolt 431 is installed around the drain hole, and a rubber pad 432 is mounted (FIG. 16a, FIG. 16b). Next, the outer cylinder 410 is inserted into the drain hole, and the nonwoven fabric filter 132 is filled in the outer cylinder 410 (Figs. 16C and 16D). The nonwoven fabric filter 132 has been described above in the filter 30.

Next, the rubber pad 433 is reinserted into the anchor bolt 431 and the nonwoven fabric filter 132 is compressed while inserting the inner cylinder 420 into the outer cylinder 410 (FIGS. 16E and 16F). Finally, the nut 434 is fastened to the anchor bolt 431 to fix the inner cylinder 420. Then, the nonwoven fabric filter 132 is present in a compressed state between the inner cylinder 420 and the outer cylinder 410. Since the nonwoven fabric filter 132 is compactly present in the compressed state, the treated water is gradually filtered out through the drain hole and gradually flows out with almost no flow rate.

As described above, according to the present invention, solids are removed and oil / water separation is performed only by the physical action of the polymer filters 12 and 22, and the flow of the treated water is naturally induced by the level difference so that a separate power device is not required. It is easy to maintain and economical, and it is excellent in versatility because it shows effects on various kinds of oil components.

Since the polymer filters 12 and 22 used in the present invention are composed of a cylindrical spiral body and are elastically deformed and restored, the polymer filters 12 and 22 are not required to be removed from the filter cylinders 11 and 21, but only by high-pressure injection of air or water. It is possible to remove the solids attached to the surface of the, and also by the repetitive elastic deformation and restoration action of the cylindrical helical body by the pressure of air or water to be injected under high pressure, the removal of the deposits is made more effective.

The treatment facility according to the present invention has an advantage that the inlet 111 of the first treatment tank 100 and the outlet 312b of the third treatment tank 300 have a smooth gradient, and thus can be easily connected to the existing storm pipe. There is this. In the present invention, when the treated water passes through the filter 30, its path becomes considerably longer, so the filtration efficiency is very good.

1: whole treatment tank
10: Gravity Mud Chamber
11, 21, 31: filter cylinder
12, 22: polymer filter
12a: spiral cutout
13: punched plate
13a, 411, 412: through hole
15, 40: air injection rod
16, 41: air spray rod
17: Material inlet
20: oil / water separation chamber
30: filter
32, 132: nonwoven fabric filter
50: cleaning tube
100: first treatment tank
110, 310: Drainage
111, 211, 311: inlet
112, 212, 312a, 312b: outlet
150, 250, 350: discharge pipe
200: second treatment tank
220: cage
300: third treatment tank
410, 420: drain bottle
431 anchor bolt
432, 433: rubber pads

Claims (26)

It comprises a first treatment tank, a second treatment tank, and a third treatment tank having an inlet and an outlet, respectively, wherein the first treatment tank is provided with a gravity mud chamber, the second treatment tank is an oil-water separation chamber The third treatment tank is installed, the filter is installed,
The gravity mud chamber,
Since the polymer filter is filled in the filter cylinder fabricated to allow the passage of the treated water, the solids in the treated water are not filtered out by the polymer filter and thus are precipitated under the first treatment tank, and the oil component in the treated water. Is coalesced to each other in the process of passing through the polymer filter is installed on the outlet side of the first treatment tank to be discharged to the outlet of the first treatment tank with the treated water,
The oil and water separation chamber,
In the process of passing the polymer filter in the oil-water separation chamber by treating the water flowing into the inlet of the second treatment tank from the outlet of the first treatment tank by filling the polymer filter into the filter cylinder manufactured to allow the passage of the treated water. It is installed at the inlet side of the second treatment tank so that the oil components are coalesced with each other and float to the surface of the second treatment tank.
The filter,
The nonwoven fabric filter is filled in the filter cylinder, and is disposed below the inlet of the third treatment tank so as to cover the water surface so that the treated water flowing through the inlet of the third treatment tank passes from the top to the bottom. Non-point pollutant removal device characterized in that. According to claim 1, wherein the filter cylinder of the gravity mud chamber is erected vertically, both left and right sides are installed to be inclined in the flow direction of the treated water, the front surface on the inlet side of the first treatment tank and the outlet side of the first treatment tank. Non-point pollutant removal device characterized in that a plurality of through-holes are formed for the passage of the treated water on the back side. The apparatus of claim 1, wherein an outlet of the first treatment tank is provided on an upper sidewall of the first treatment tank. The apparatus of claim 1, wherein the polymer filter of the gravity mud chamber and the oil / water separation chamber is filled by 80 to 85% of the total volume of the filter cylinder. According to claim 1, wherein the filter cylinder of the gravity mud chamber has a lower portion of the rear of the filter block than the lower portion of the front or the rear portion of the back, the lower portion of the filter cylinder of the gravity mud chamber to the entire height of the filter cylinder. Non-point contaminant removal device characterized in that blocked by 1/4 to 1/3. According to claim 1, wherein the inlet of the second treatment tank is installed to be located below the second treatment tank, the oil-water separation chamber is horizontally positioned above the inlet of the second treatment tank so that the treated water can pass through from below. Non-point pollutant removal device characterized in that it is installed. The apparatus of claim 6, wherein a cage tank is installed to be connected to the inlet of the second treatment tank, and the oil / water separation chamber is installed on the cage tank. The non-point pollutant removal apparatus according to claim 1, wherein the flow of the treated water from the first treatment tank to the third treatment tank is driven by a water level difference. According to claim 1, wherein the polymer filter of the gravity mud chamber and the oil and water separation chamber, the band of polyethylene material having a width of 8-25mm, a length of 60-200mm, a thickness of 0.01mm-0.1mm spirals to the virtual cylinder Non-contaminant removal device characterized in that the hollow cylindrical helical body having a spiral cut-out portion so that the outer shape is elastically deformed and restored by an external force, the virtual cylindrical body has a diameter of 10 ~ 20mm. 10. The non-point contaminant removing apparatus of claim 9, wherein the polymer filter has a gap of 5 to 25 mm between the spiral cutout portions. 10. The apparatus of claim 9, wherein the helical cutout of the polymer filter is inclined at 45 to 65 degrees with respect to the central axis of the virtual cylinder. 10. The non-point contaminant removing apparatus of claim 9, wherein the polymer filter has a specific gravity of 0.85 to 0.95. 10. The apparatus of claim 9, wherein the polyethylene is an ultra high molecular polyethylene having a molecular weight of 6 million to 11 million. According to claim 1, wherein the plurality of treated water through-holes are formed in the filter cylinder of the gravity mud chamber and the oil-water separation chamber to allow the passage of the treated water, the diameter of the treated water through-hole is gradually narrower in the direction in which the treated water flows. Non-point contaminant removal device characterized in that the losing shape. The apparatus of claim 1, wherein the outlet of the third treatment tank is installed at a lower position than the inlet of the first treatment tank. 16. The boiling point according to claim 15, wherein the outlet of the third treatment tank is obtained by installing a discharge pipe so that one end is located at the bottom of the third treatment tank and the other end is located at the water level on the side of the third treatment tank. Decontamination device. 17. The apparatus of claim 16, wherein the inlet of the third treatment tank and the bottom inlet of the discharge pipe of the third treatment tank are located far away from each other of the third treatment tank when viewed from above. 18. The method of claim 17, wherein the bottom inlet of the discharge pipe bottom of the third treatment tank is inclined to one side of the third treatment tank when viewed from above and the side wall end of the discharge pipe of the third treatment tank is located at the same position as the inlet of the first treatment tank. Non-point pollutant removal device characterized in that. 18. The method of claim 17, wherein the filter cylinder of the filter is formed with a through hole for the inlet of the treated water on the upper surface of the inlet side, a through-hole for discharging the treated water is formed on the lower surface of the bottom inlet of the discharge pipe to the treated water side Non-point contaminant removal device characterized in that the flow in the direction to exit. 18. The apparatus for removing non-point contaminants according to claim 17, wherein the third treatment tank has a square shape. The method of claim 1, wherein a drainage hole is formed in at least one of the first treatment tank, the second treatment tank, and the third treatment tank, the drainage hole is installed in the drainage hole, and the non-woven fabric filter is filled in the drainage hole. Non-point contaminant removal device characterized in that the. 22. The method of claim 21, wherein the drain is made by inserting the inner cylinder into the outer cylinder, the bottom of each of the inner cylinder and the outer cylinder is formed with a through hole for the passage of the treated water, the nonwoven fabric filter is the bottom of the inner cylinder and the outer cylinder Non-point contaminant removal device characterized in that the filling between the bottom. The nonwoven fabric filter according to claim 1 or 21, wherein the nonwoven fabric filter is cut to a width of 25 to 40mm, a length of 50 to 70mm, and then folded to fix the center to form a butterfly shape. Non-point pollutant removal device. The non-point contaminant removing apparatus according to claim 1, wherein the first treatment tank, the second treatment tank, and the third treatment tank are disposed so as to be sequentially arranged in the longitudinal direction in the entire treatment tank having a rectangular shape when viewed from above. . The apparatus of claim 1, wherein the gravity mud chamber, the oil / water separation chamber, and the filter have an open ratio of 40 to 60% per unit area for the passage of treated water. The filter cleaner of claim 1, wherein at least one of the gravity mud chamber and the filter cylinder of the oil / water separator is installed, and the filter cleaner has an injection rod capable of blowing air or high pressure water into the filter cylinder. Non-point pollutant removal device, characterized in that.

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