KR101546784B1 - Nonpoint pollution source reducing device - Google Patents

Abstract

The present invention provides a nonpoint pollution source reducing device which uses a filtering member for a long time by performing backwash with respect to a filtering member; and moreover prevents bad smells, harmful insect propagation, or the like by discharging water stagnated in each chamber.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-point pollution abatement apparatus having a back-

The present invention relates to a non-point pollution abatement device having a function of performing backwashing on a filtration member and discharging water to each chamber.

In general, nonpoint pollution source refers to a source of emission of water pollutants in an unspecified place such as a city, a road, a farmland, a mountainous area, or a construction site. Compared to this, point pollution source means pollutant emission source which is easy to collect due to clear path of pollutant, and it is possible to estimate the amount of pollutants generated during the year due to the relatively small impact due to the season, In contrast, nonpoint pollution source is difficult to collect because pollutant outflow and discharge route are not clearly distinguished, and the amount of pollution is greatly dependent on weather conditions such as precipitation. Therefore, design and maintenance of treatment facility There is a difficult problem.

In addition, the above-mentioned non-point pollution source is not limited to agricultural products such as fertilizers and pesticides which are not absorbed by the crops, but are excluded from the pasture, pastures, livestock wastewater discharged from livestock farms, air pollutants mixed with rainwater, There is a characteristic that it flows down into the river together with rainwater during rainfall.

The non-point pollution sources are specifically classified into soil, nutrients, bacteria and viruses.

Sediment is a pollutant that absorbs a lot of pollutants such as nutrients, metals, hydrocarbons, etc., and absorbs a lot of rainwater runoff. It causes obstacles to photosynthesis, respiration, growth and reproduction of aquatic organisms, It affects.

In addition, nutrients, such as fertilizer residues, are often leaked by rainwater to accelerate the growth of algae, thereby deteriorating the quality of the river water and flowing out from the lawns, farmland, urban roads, and sewage of houses and golf courses into rivers . Bacteria and viruses are detected in animal waste and sewage drainage. In the United States, high concentrations of bacteria and viruses in rainwater runoff have also caused contamination of rivers.

Oil and grease can be fatal to aquatic organisms in small quantities, and contamination occurs during accidents such as leaks, vehicle overturns, vehicle washing, and waste oil. Heavy metals such as lead, zinc, cadmium, copper and nickel are frequently detected in rainfall runoffs in urban areas. More than 50% of the total amount of metal flowing into rivers is discharged through the soil as a medium, And there is a possibility of drinking water contamination, special care is required.

Organics are released from a wide range of places such as fields, paddy fields, forests, and residential areas. Especially in the case of confluent pipelines, the organic substances contained in the sewage flowing through the sewer are flowed at weak flow rates. In the industrial area, artificial organic compounds such as adhesives, cleaning agents and solvents are widely used, are stored improperly, and are generated during the process of disposal. Insecticides such as herbicides, pesticides and fungicides can accumulate in aquatic organisms such as plankton and cause bioconcentration through food nets, which can have catastrophic consequences for fish and birds.

Gross Pollutants refers to heavy metals, insecticides, bacteria, etc. in garbage, residues and floats generated at construction sites and workplaces. Residues such as fallen leaves, lawn mowers, animal waste, and dumped garbage are bacteria and viruses. It becomes a medium to be transported to the river and it decreases the dissolved oxygen, which causes the fish death.

These non-point pollutants listed above may enter the river directly without any special treatment, thereby polluting the water quality, causing fish to be killed or benthic organisms being destroyed, causing aquatic ecosystem to be disturbed.

In addition, recently land development has increased the number of impervious layers, and the amount of rainwater discharged into the rivers has increased due to the increase in the amount of rainwater that is not absorbed into the soil or evaporated during the rainfall and the increase of the groundwater recharge. It can also be a triggering factor.

In particular, in the case of non-point pollution in urban areas, the area of greenery and permeable layer is reduced in urban areas, and the area of impervious ground due to development of residential land is increasing. Due to increase of traffic volume and population expansion, The pollutants that have been adsorbed and moved by falling down together with rainfall can not pass through the impervious surface and flow like rainwater and flow into the river at once. As the amount of rainwater penetrating into the ground decreases, the rainwater flowing into the river through the impervious layer While the risk of floods increases, there is a problem that the rivers are becoming dry streams due to the shortage of river maintenance water in the dry season.

In residential areas and roads, not only suspended substances (SS) and nutrients but also bacterial and metallic substances and some organic toxic substances are also emitted.

On the other hand, when the non-point pollution source moves on a rainy day, particulate pollutants accumulated on the ground surface are swallowed by rainwater and flow into the river. As a result, the first- ) Appears and the concentration decreases as the rain continues. In other words, rainwater runoff contains high concentrations of organic substances and various toxic substances, which can be a major cause of river ecological destruction and water pollution.

On the other hand, the present applicant has proposed a patent No. 10-1013113 entitled " Non-point Pollution Reduction Apparatus "(Registered on Mar. 1, 2011) as a conventional technique for a non-point pollution abatement apparatus.

In the prior art, the sedimentation materials are integrated in the bottom of the needle chamber, the screen chamber having the screen member causes the floating sludge to be filtered on the screen member, the filtration chamber having the filtration apparatus performs the microfiltration have.

However, such conventional techniques have the following problems.

Conventional non-point pollution abatement devices must be continuously used without backwashing the filtration device, and then the filtration device should be replaced. Therefore, the conventional non-point pollution abatement apparatus has a problem that the replacement period of the filtration apparatus is short because there is no backwash function for the filtration apparatus.

In addition, the conventional non-point pollution abatement apparatus has a structure in which water is accumulated in both the acupuncture chamber, the screen chamber, and the filtration chamber even after the rain has ceased. Thus, when the state of the water is prolonged (that is, The device may be considered a disgusting facility due to a malfunction due to decay of the pest or water spoilage.

Patent No. 10-1013113 "Non-point Pollution Reduction Device" (registered on Mar. 2011,

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the prior art as described above, and it is an object of the present invention to provide a filtering apparatus capable of long-term use of a filtration member by backwashing a filtration member, A non-point pollution abatement apparatus capable of performing a non-point pollution abatement.

According to an aspect of the present invention, there is provided a microreactor comprising: a microreactor chamber having an inlet at one side wall; A first partition wall forming a wall of the acupuncture chamber, the first partition wall being formed at a lower height than another wall of the acupuncture chamber; A screen chamber having a screen member disposed adjacent to the needle using chamber and partitioning the upper and lower spaces with the first partition wall interposed therebetween; A second partition wall forming a wall of the screen chamber, the second partition wall having a height higher than that of the first partition and having a communication hole formed at a lower portion thereof; A filtration chamber adjacent to the screen chamber with the second partition wall interposed therebetween and having an outlet formed on a side wall thereof and having a filtration member at a height between the communication port and the outlet; A drain pumping means comprising drainage pump disposed at the bottom of the screen chamber or the filtration chamber to drain water from the screen chamber or the filtration chamber; A siphon tube having one end opened at a lower portion of the needle use chamber and the other end opened at a lower portion of the screen chamber or the filtration chamber and an intermediate portion disposed at a position higher than the first partition and the outlet; A check valve member provided at an upper portion of the siphon tube to allow air to flow out of the siphon tube and prohibit air inflow into the siphon tube; Wherein the rainwater flowing into the needle chamber flows through the first partition wall and then flows into the lower portion of the screen chamber through the screen member and the rainwater flowing into the screen chamber passes through the communication hole The filtration member is backwashed when the water in the screen chamber and the filtration chamber is drained by the drain pumping means, And water in the needle using chamber is discharged to the screen chamber or the filtration chamber by the tube for siphon.

In the above, the filter member may be a sand filtration layer or a fiber filter media layer.

As described above, the present invention provides a non-point pollution abatement apparatus that can perform backwashing on a filtration member to use the filtration member for a long period of time, and to discharge water high in each chamber to prevent odor and pest breeding .

1 is a conceptual cross-sectional view of a non-point pollution abatement apparatus according to an embodiment of the present invention;
Figures 2 to 5 are operational states of Figure 1,
6 is a plan view of the apparatus for reducing non-point pollution in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

FIG. 1 is a conceptual cross-sectional view of a non-point pollution abatement apparatus according to an embodiment of the present invention, FIGS. 2 to 5 are operational state diagrams of FIG. 1, and FIG. 6 is a plan view of the nonpoint pollution abatement apparatus of FIG.

As can be seen in FIG. 1, the apparatus is largely composed of a needle use chamber 100, a screen chamber 200, and a filtration chamber 300.

An inlet (101) is formed in one side wall of the needle use chamber (100).

And the sedimentation materials such as gravel, sand and the like are accumulated in the lower part of the sedimentation chamber 100 through the inlet 101.

In this embodiment, the acupuncture chamber 100 is in the form of a rectangular barrel, and one of the walls forming the acupuncture chamber 100 is the first partition 110.

On the other hand, the bottom surface of the acupuncture chamber 100 is formed to be inclined so that the precipitate materials collect on one side.

The first partition 110 is formed between the needle use chamber 100 and the screen chamber 200.

The first partition 110 is formed at a lower height than the other walls of the needle using chamber 100.

Therefore, the rainwater flowing into the needle-use chamber 100 flows through the first barrier ribs 110 to the screen chamber 200. The first barrier ribs 110 cause the needle- And so on.

Typically, the contaminants included in the influent water can be classified into a submerged material, a largely filtered material, and a small captured material. In the sedimentation chamber 100, a heavy material that sinks, such as gravel, sand, etc., .

That is, the first partition 110 performs a barrier function to prevent a heavy substance passing through the acupuncture chamber 100 from entering the screen chamber 200.

The screen chamber 200 is adjacent to the acupuncture chamber 100 with the first partition 110 interposed therebetween and the screen chamber 200 is provided with a screen member 210 for partitioning the upper and lower spaces.

In this embodiment, the screen member 210 is a basket made of a plate material having a screen through hole, and the contaminants contained in the storm can pass through the screen member 210 from the upper part to the lower part, It is caught in the screen basket.

In this embodiment, since the screen member 210 is only lifted up or cleaned by lifting up the screen member 210 at the time of cleaning the apparatus, the screen chamber 200 can be cleaned very easily.

Since the bleed forms a downward flow in the screen chamber 200 and the floating contaminants floating in the bleed only float with the flow from the needle use chamber 100 to the screen chamber 200, 200, and then collected in the screen member 210 when the storm is forcibly discharged.

On the other hand, a drain pumping means including a drain pump 230 is provided below the screen chamber 200.

The drainage pumping means may optionally be disposed in the filtration chamber 300. However, in this case, there is a problem that the arrangement of the pumping means is complicated for maintenance.

The drainage pumping means is provided for forcibly draining the water in the screen chamber 200 by the drainage pump 230. The water drained by the drainage pumping means is used for backwashing the filtration member 320, It is preferable to filter it out by a simple filter cloth or the like and discharge it.

On the other hand, in this embodiment, the drainage of the screen chamber 200 by the drainage pumping means means that the drainage of the water from the screening chamber 200 and the filtration chamber 300 communicated by the communication opening 221 Meaning that the water in the needle chamber 100 is drained by the siphon tube 400.

On the other hand, a level sensor 231 such as a level switch is provided around the drain pump 230 to automate the operation of the drain pump 230. Since the water level sensing unit 231 is a general technology related to the operation of the drain pump 230, detailed description thereof will be omitted.

In this embodiment, the screen chamber 200 is in the form of a rectangular barrel, and one of the walls constituting the screen chamber 200 is the second partition 220.

The second partition 220 is formed between the screen chamber 200 and the filtration chamber 300 so that the second partition 220 is a wall of the screen chamber 200 and a wall of the filtration chamber 300 .

The second barrier rib 220 is formed to have a height higher than that of the first barrier rib 110 and a communication hole 221 is formed in a lower portion of the second barrier rib 220.

Therefore, the storm that has flowed into the screen chamber 200 is moved to the filtration chamber 300 through the communication port 221.

A filtration chamber 300 is provided on one side of the screen chamber 200.

An outlet (301) is formed in one side wall of the filtration chamber (300) to discharge the rain.

The filtration chamber 300 is provided with a filtration member 320 at a height between the communication port 221 and the outlet port 301. That is, the filter member 320 is disposed at a position higher than the communication port 221 and lower than the outlet port 301.

Therefore, the rainwater flowing through the communication port 221 forms an upward flow, and the foreign matter is filtered by the filter member 320 and then flows out through the outlet port 301.

In this embodiment, the filter member 320 can be applied as long as it can be a sand filtration layer or a filter such as a fibrous filter medium layer.

Meanwhile, a siphon tube 400 is provided across the needle chamber 100 and the screen chamber 200 so that the water in the needle chamber 100 can be discharged together with the water by the drain pump 230.

One end of the siphon tube 400 is opened at the bottom of the needle use chamber 100 and the other end is opened at the bottom of the screen chamber 200 or the filtration chamber 300 The intermediate portion is arranged to pass through a position higher than the first partition wall 110 and is arranged to pass over a position higher than the outlet 301 of the filtration chamber 300. [

The intermediate portion of the siphon pipe 400 is arranged to pass over a position higher than the first partition wall 110 and the outlet port 301 because when the storm surges from the needle chamber 100 to the screen chamber 200, Which means that there is no flow of rain through the inside of the tube 400 for the phone.

On the other hand, the check valve member 410 is provided so that a negative pressure (a pressure lower than the atmospheric pressure) is applied to the interior of the siphon tube 400.

The check valve member 410 may be used as long as it allows air to flow out of the siphon tube 400 but prohibits air inflow into the siphon tube 400.

The guide pipe 401 is formed on the upper part of the siphon pipe 400 and the check valve member 410 is inserted between the guide bar 411 inserted into the guide pipe 401 and the guide bar 411 And a sealing cover 412 provided at an upper portion of the guide pipe 401 to close the guide pipe 401.

When the pressure of the siphon tube 400 is increased, the check valve member 410 moves upward to allow air to be discharged to the outside, and when the pressure of the siphon tube 400 is lowered, The air is prevented from flowing into the guide pipe 401.

The operation of the present embodiment as described above will be described.

When the rainwater flows into the needle-use chamber 100 through the inlet 101, the water level of the needle-use chamber 100 rises as shown in FIG. At this time, the water level of the inside of the saline using chamber 100 side of the siphon tube 400 also rises. As the water level rises, the water level of the needle chamber 100 continuously increases up to the first partition 110.

2, the water in the sedimentation chamber 100 flows into the screen chamber 200 through the first partition wall 110 and flows into the screen chamber 200 through the screen member 210 of the screen chamber 200 And then flows into the filtration chamber 300 through the communication port 221 of the second partition 220 and passes through the filtration member 320 in the filtration chamber 300 and is discharged to the outlet port 301 do. At this time, since the outlet 301 is positioned lower than the first partition 110, the water level of the sedimentation chamber 100 is maintained at the same level as the first partition 110, Does not occur.

This state can be expressed by the water level state as shown in FIG.

3, the water level inside the screen chamber 200 side of the siphon tube 400 coincides with the water level of the screen chamber 200.

On the other hand, when the water level inside the screen chamber 200 of the siphon tube 400 rises, the air pressure inside the siphon tube 400 rises, And as a result, the air inside the siphon tube 400 of Fig. 3 has the same pressure as the atmospheric pressure.

When the inflow of the stormwater is stopped in the state of FIG. 3, the same water level state of FIG. 4 is obtained.

4, the rainwater is discharged through the outlet 301, and the water level of the filtration chamber 300 and the screen chamber 200 is lowered as compared with FIG. That is, the water level of the filtration chamber 300 and the screen chamber 200 is in contact with the lower portion of the outlet 301.

4, the water level of the screen chamber 200 of the siphon tube 400 is higher than the level of the screen chamber 200 of the water level inside the screen chamber 200 side. This is because the siphon pipe 400 is substantially closed and a negative pressure is formed inside the siphon pipe 400 as the water level inside the screen chamber 200 of the siphon pipe 400 is lowered.

In the state shown in FIG. 4, the drain pump 230 operates and water is discharged to the outside.

That is, when the water level sensing unit 231 determines that the rain has stopped when the water level of the screen chamber 200 rises after the water level of the screen chamber 200 rises after the water level of the screen chamber 200 is lowered to a certain level .

The water level of the water in the screen chamber 200 and the filtration chamber 300 is lowered while maintaining the same water level by the operation of the water discharge pump 230.

At this time, the water located in the upper portion of the filtration member 320 in the filtration chamber 300 forms a downward flow to backwash the filtration member 320. In this way, the replacement period of the filter member 320 can be prolonged.

On the other hand, when the water level of the screen chamber 200 drops, the water in the needle use chamber 100 flows to the screen chamber 200 along the siphon tube 400 by the siphon development. Therefore, the water in the needle use chamber 100 is also discharged to the outside.

FIG. 5 shows a state in which the drain pump 230 discharges all the water and stops.

Therefore, most of water is discharged to the acupuncture chamber 100, the screen chamber 200, and the filtration chamber 300 of the present embodiment to prevent breeding of pests or odor.

1 can be designed in a planar structure as shown in FIG.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Needle chamber 101: Inlet
110: first partition
200: screen chamber 210: screen member
220: second partition 221:
230: Drain pump 231: Water level sensing unit
300: Filtration chamber 301: Outlet
320: filtration member
400: tube for siphon 401: guide tube
410: Check valve member 411: Guide bar
412: Sealed cover

Claims (2)

A needle using chamber in which an inlet is formed at one side wall;
A first partition wall forming a wall of the acupuncture chamber, the first partition wall being formed at a lower height than another wall of the acupuncture chamber;
A screen chamber having a screen member disposed adjacent to the needle using chamber and partitioning the upper and lower spaces with the first partition wall interposed therebetween;
A second partition wall forming a wall of the screen chamber, the second partition wall having a height higher than that of the first partition and having a communication hole formed at a lower portion thereof;
A filtration chamber adjacent to the screen chamber with the second partition wall interposed therebetween and having an outlet formed on a side wall thereof and having a filtration member at a height between the communication port and the outlet;
A drain pumping means comprising drainage pump disposed at the bottom of the screen chamber or the filtration chamber to drain water from the screen chamber or the filtration chamber;
A siphon tube having one end opened at a lower portion of the needle use chamber and the other end opened at a lower portion of the screen chamber or the filtration chamber and an intermediate portion disposed at a position higher than the first partition and the outlet;
A check valve member provided at an upper portion of the siphon tube to allow air to flow out of the siphon tube and prohibit air inflow into the siphon tube;
And,
The rainwater flowing into the needle chamber flows into the screen chamber through the screen member after flowing through the first partition wall. The rainwater flowing into the screen chamber flows into the filtration chamber through the communication hole, The filtration member is backwashed when the water in the screen chamber and the filtration chamber is drained by the drainage pumping means, while the filtration member is backwashed by the siphon tube Characterized in that water in the needle-using chamber is discharged to the screen chamber or the filtration chamber.
The non-point pollution abatement device according to claim 1, wherein the filtration member is a sand filtration layer or a fibrous filter medium layer.

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