KR101249741B1 - Non-point source contaminant purification system and method for an early stage rain water - Google Patents

Abstract

PURPOSE: An integrated rainwater treatment apparatus including a microorganism treatment bath and a rainwater treatment method are provided to maximize the purification efficiency of a non-point contamination source regarding initial rainwater, and easily construct and maintain the inexpensive apparatus. CONSTITUTION: A rainwater treatment method includes: a step of making inflow rainwater flow downwards to a precipitation tank with vortex flow; a step of absorbing floating non-point contaminants such as oil included in rainwater during the vortex flow of the rainwater; a step of precipitating precipitable non-point contaminants included in the rainwater after the vortex flow of the rainwater; a step of making the rainwater upwardly flow and pass through a filter(5); and a step of making the rainwater downwardly flow and pass through the filter; a step of making the rainwater upwardly flow and pass through a microorganism treatment apparatus(9). The rainwater, which has upwardly flowed and passed through the filter, drops with a differential head, upwardly flows, and flows into the filter.

Description

Non-point source contaminant purification system and method for an early stage rain water}

The present invention relates to a stormwater treatment apparatus and a stormwater treatment method, and more particularly, to a microbial treatment tank for maximizing the purification efficiency and maintenance efficiency of a pollutant in a treatment apparatus for reducing a boiling point pollutant contained in an initial stormwater. It relates to an integrated device-type storm treatment apparatus and a storm treatment method including.

Generally, pollutants include point pollutants emitted from well-defined and limited point sources, such as domestic sewage, industrial waste and livestock waste, and agricultural land in unspecified areas, grasslands, forests, construction sites, mines, logging sites, Discharge areas can be divided into nonpoint pollutants emitted from a wide variety of nonpoint sources, such as waste disposal sites, landfills, urban areas, roads and industrial sites.

In case of point pollutants with a clear discharge point among the pollutants, a separate purification device or wastewater treatment device is installed in homes, factories, livestock farms, etc. In addition to the large discharge area, most of them remain on the earth's surface, but are introduced into public waters and groundwater such as rivers with initial rainwater, which is the main cause of water pollution.

The non-point contaminant has a specific gravity greater than that of rain compared to the specific gravity of rainwater, which is precipitated, and has a specific gravity less than that of rainwater. It is classified into contaminants and soluble nonpoint pollutants dissolved in water.Non-point pollutants are various forms such as heavy metals, pathogenic microorganisms, organic compounds, radioactive substances, toxic substances and other contaminants. Since there is a risk of contamination due to inflow into public water or groundwater, it is important to prevent the initial rainwater from directly entering public water or groundwater such as rivers.

In particular, in recent years, non-point sources of concentrated industries such as foot-and-mouth disease prevention and other diseases and viruses, prevention work to prevent crops from pests, and landfill leachate spillage have been seriously generated. Such nonpoint source is difficult to collect because the flow and discharge paths of pollutants are not clearly distinguished, and it is difficult to design and maintain the treatment facility because the amount of generation and discharge depends on weather conditions such as precipitation.

Therefore, in order to protect the water supply and secure the health of the aquatic ecosystem, measures should be taken to reduce non-point pollutants from the early stages of development, such as land development planning, and to carry out projects that cause pollution by non-point sources or install wastewater discharge facilities. The workplace must enact a nonpoint source management system such as mandatory installation, reporting and prevention facilities to contribute to water quality improvement and target water quality.

Sustained Solids (SS), Biochemcal Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Tp (Total Phosphorus), which are the main sources of pollution from land development, industrial parks, agricultural industries, roads and impermeable pavements Tn (total nitrogen) is generated at high concentrations and flows into rivers, which is known as the main culprit of environmental pollution.

Recently, the pollutant sources such as cement or concrete pavement in roads, industrial and residential areas, contaminants such as automobile dust, automobile oil and unburned oil flow into rivers through rainwater pipelines, rather than turbidity pollutants caused by soil particles. By entering the situation has a big impact on river pollution.

In particular, leachate as a by-product of disease prevention work such as foot-and-mouth disease is polluting soil, drinking water and living rivers, and moreover, rivers. Such pollutants are classified as hardly degradable pollutants because the time required for natural purification is very long and complicated if left untreated.

Accordingly, as the necessity of purification in advance is urgent, it is necessary to greatly reduce environmental pollution by reducing and discharging through a nonpoint source reduction device.

In addition, non-point pollutants generated in impervious areas such as industrial districts and automobile roads are often discharged to rivers through rainwater pipelines. Therefore, if a non-point pollutant reduction device is introduced just before the final discharge, it is possible to purify it. If the strength is high when the strength is within 5mm per hour, it can effectively reduce the deterioration of the water quality of the river if the non-point source is removed from the initial rainwater.

That is, the non-point pollutants are generally reported to be able to treat more than about 80% of the total rainfall in the rainwater treatment facility capacity for about 20mm rainfall since the rainwater shows a high pollution concentration in the early stormwater runoff.

Therefore, considering the runoff characteristics during rainfall, an economical and effective method for purifying nonpoint pollutants is to separate and intensively clean the initial rainwater with high pollution.

From this point of view, various techniques have been proposed, as can be seen in the prior art document, which will be described later for the purification facility for the initial stormwater.

That is, various prior arts have been proposed in connection with the storm water treatment apparatus as shown in Patent Documents 1 to 7 in the [Previous Technical Documents] section.

However, the above-mentioned conventional technologies have described that the purification performance is excellent, the life is improved, and the maintenance is easy, but there is still room for improvement or change from the comprehensive viewpoint of the convenience of maintenance, the ease of construction, the low cost, and the excellent performance. The situation is holding.

For example, Korean Patent No. 10-0894022 (Patent Document 1) has an inclined sedimentation tank under a solid separator to separate solids and have a micro filtration wall to separate fine contaminants. In addition, to facilitate the discharge and backflow of the effluent was to include a drive pump. However, such a processing apparatus requires supply of an energy source by a driving pump, and has a disadvantage in that maintenance costs are increased.

In addition, Patent No. 10-0897258 (Patent Document 2) installed a porous membrane in order to induce the dispersion of influent water in the first treatment tank, and installed a plurality of inclined plate in order to induce efficient precipitation of sediment in the second treatment tank. In addition, the third treatment tank was equipped with a filter adsorption net to remove other suspended matter. However, such a device also has a disadvantage in that the efficiency of fine particle separation.

On the other hand, Patent No. 10-0923234 (Patent Document 3), although the cartridges to make the maintenance easy to cartridge, there is a disadvantage that the size and weight of the unit cartridge is still large and heavy. In addition, the multi-stage treatment is not a multi-stage purification in the vertical direction but a multi-stage treatment in the horizontal direction, so that the filtration area of the omni-directional filter itself filled with the filter medium must be extremely small. That is, there is a problem in that the filter area of the filter through which rainwater passes is small and the purification performance and efficiency are not high.

And, Patent No. 10-0987316 (Patent Document 4) discloses a non-point pollutant treatment device and purification method of oil-water separation and up-filtration complex system. This device is to separate the floating nonpoint pollutants including oil to purify the contaminants included in the initial rainwater, and then to be purified by the up filtration method. There is a disadvantage that it is easy to be clogged, so that processing performance is poor and maintenance is not easy.

In addition, Korean Patent No. 10-0991492 (Patent Document 5) discloses "a natural initial rainwater purification apparatus and its purification method through multi-stage treatment," but it is difficult to quickly process the initial rainwater in the actual application and the vegetation layer is Since it is formed, there is a disadvantage that the processing apparatus must be exposed to the outside.

In addition, Patent No. 10-1010048 (Patent Document 6) has a disadvantage in that the purification efficiency for the fine turbidity material is low and the clogging of the filter is likely to occur because only the downward filtration is performed in the rainwater treatment.

In addition, since Patent Application No. 10-1051049 (Patent Document 7) also employs only a downstream filtration tank, since it is made in rainwater treatment, there is a disadvantage in that the purification efficiency of the fine turbidity material is low and the clogging of the filter is likely to occur.

Therefore, the above-described prior arts still have a lot of room for improvement in view of convenience of maintenance, ease of installation, low cost and excellent purification performance.

: Republic of Korea Patent Publication No. 10-0894022 (2009.04.10) : Republic of Korea Patent Publication No. 10-0897258 (2009.05.06) : Republic of Korea Patent Publication No. 10-0923234 (2009.10.16) : Republic of Korea Patent Publication No. 10-0987316 (2010.10.06) : Republic of Korea Patent Publication No. 10-0991492 (2010.10.27) : Republic of Korea Patent Publication No. 10-1010048 (2011.01.14) : Republic of Korea Patent Publication No. 10-1051049 (2011.07.15)

The present invention is to solve the above-mentioned problems, overcoming the limitation of the purification efficiency for the non-point pollutant of the existing non-point pollutant reducing device to maximize the efficiency of non-point pollutant in the initial rain, etc., while maximizing the efficiency Nevertheless, the object of the present invention is to provide a rainwater treatment device and a rainwater treatment method that are simple in construction, low in cost, and easy to maintain.

More specifically, the present invention is not treated in spite of passing through the abatement apparatus among the unspecified contaminants included in the initial rainwater due to the limitation of adopting only one or two methods in the purification scheme as most non-point pollutant abatement apparatuses. Low efficiency in the purification function that enters public waters or groundwater such as rivers and causes water pollution, and the filter material is easily clogged due to the concentration and accumulation of oils and fine suspended matters, which are weak points, and is easy to maintain. As a problem to be easily solved, the non-point pollutant purification method is designed to integrate the nonpoint pollutant purification method to maximize the purification efficiency and the maintenance efficiency in the apparatus for treating the nonpoint pollutant source. Reduction Device It is an object of the present invention to provide a stormwater treatment apparatus and a stormwater treatment method to maximize the efficiency and maintenance efficiency.

In order to achieve the above object, the present invention, while reducing the flow rate of rainwater flowing into the oil and water separation is carried out to filter out the oil and floating contaminants contained in the rainwater is precipitated and precipitated non-point pollutant is made and precipitated A first treatment tank to prevent re-injury of the boiling point contaminants;

The rainwater passing through the first treatment tank flows from the lower portion of the upper filter to the upper portion so that fine turbidity material that cannot pass through the upper filter is allowed to settle in the lower portion of the upper filter by natural sedimentation while passing through the upper filter. A second treatment tank through which the rainwater passing through the upward filter falls by the water head difference h and is filtered while flowing from the upper portion of the downward filter to the lower portion;

And a third treatment tank for performing microbial treatment on the rainfall inflow water passing through the second treatment tank.

In the above configuration, the first treatment tank, the rainwater inlet pipe is installed so that rainwater flows in a tangential direction with respect to the inner peripheral surface of the vortex type oil-water separator; A vortex flow type water separator having a cylindrical shape connected to the rainwater inlet pipe and guiding the rainwater flowing in a tangential direction with respect to the inner circumference; An adsorption member provided on an inner circumferential surface of the vortex type oil / water separator to collect and collect suspended nonpoint pollutants such as oil in rainwater flowing in a vortex along the inner circumferential surface; And a sedimentation tank installed under the vortex type oil / water separator.

In addition, in the above-described configuration, the lower portion of the vortex-type oil-water separator is further provided with a funnel-shaped inclined guide plate for inducing the precipitation direction of the precipitated non-point pollutants among the non-point pollutants contained in the rainwater flowing down by the vortex flow to a predetermined region. It is characterized by.

In addition, a collection bucket is provided below the vortex type oil / water separator of the sedimentation tank so as to concentrate the sedimentary nonpoint pollutants.

In addition, on the side of the collection bucket of the settling tank, a detail screen for filtering the contaminants contained in the rainwater flowing from the settling tank and the filter screen for filtering the floating nonpoint pollutants and the soluble nonpoint pollutants are vertical. Characterized in that sequentially installed in the direction.

On the other hand, in the above-described configuration, the second treatment tank, an upward filter installed so as to be filtered in the course of the rain of the first treatment tank flows from the bottom to the top; And a downward filter installed so that an upper surface portion is positioned at a lower position than the upward filter so that the rain passing upward through the upward filter has a water head difference h.

The second processing tank includes an upward inflow side screen installed in a horizontal direction on the bottom surface of the upward filter; Characterized in that it comprises a; further down the discharge side screen is installed horizontally on the lower filter bottom surface.

In the above-mentioned configuration, the third treatment tank includes a microbial processor for treating microorganisms of rainwater flowing upward, and the microbial processor includes a mesh; It is characterized in that it comprises a microbial filter in the form of a ball (Ball) attached to the inside of the net to perform a bioreaction and denitrification (우수) to rainwater.

On the other hand, according to another aspect of the present invention for achieving the above object, (A) to make the rainwater flowing down to the sedimentation tank while the vortex flow;

(B) allowing the floating boiling point contaminants such as oil contained in the rainwater to be adsorbed during the storm flow of the rainwater;

(C) precipitating the precipitated non-point pollutant contained in the rainwater that finished the vortex flow;

(D) allowing the rainwater passed through step (C) to pass through the filter while flowing upward;

(E) allowing the rainwater passed through step (D) to pass through the filter while flowing downward;

(F) The rainwater treatment method is characterized in that the rainwater passed through step (E) is made to flow upward to pass through the microbial processor.

At this time, the rainwater passing through the filter of step (D) is characterized in that the drop with the water head difference (h) to be introduced into the filter of the step (E).

And, the filter for passing the rainwater of the step (D) is provided with a filter medium flow type filter, the filter for passing the rainwater of the step (E) is characterized in that the filter medium floating filter is installed.

The effects of the stormwater treatment apparatus and the stormwater treatment method according to the present invention are as follows.

First, the present invention is an integrated device-type non-point source reducing device including a microbial treatment tank including a microbial filter, oil and fat of low efficiency and its weaknesses by applying one or two methods, which are disadvantages of most existing reducing devices. Due to the concentration and accumulation of fine suspended matter, the filter media can be easily blocked.

In other words, the present invention is easy and easy to maintain, and a total of five reduction methods of the device type by designing as an integrated device to maximize the efficiency of the reduction of non-point source of pollution to the initial rainwater rational non-point source reduction device Will be provided.

On the other hand, the present invention, by sequentially filtering the pollutant generated with the initial excellent water in the most effective order can maximize the reduction efficiency of the non-point pollutant source. In other words, the present invention is treated with an upward filtration through the vortex oil / water separator, the filter screen, and the filter, which combines the principles of natural purification as much as possible, and then drops using the water head difference (h), and then the filtration through the downward filtration method is excellent. By performing the treatment, as well as discharge through the microbial processor, it is possible to treat non-point pollutants contained in rainwater with high efficiency close to the natural type.

In other words, the non-point source reduction apparatus including the microbial filter of the present invention is characterized by the particle size and reactivity of the non-point source, such as oil and grease suspended solids, sediment contaminants and fine contaminants generated by the initial rainwater, and physical and chemical characteristics By removing the most efficiently in consideration of the above, it is possible to reasonably and effectively treat various types of nonpoint pollutants generated in various types due to the characteristics of the nonpoint source, thereby maximizing the purification efficiency of the rainwater treatment device.

In addition, according to the present invention, in adopting a method of filtering the initial excellent vortex sedimentation method and the flow direction of the inflow water from the bottom to the top to the top to the bottom, the excellent passage area of the downflow filter to filter from the top to the bottom upward By forming more than twice as wide as the filter, it prevented the rainwater from becoming impossible due to clogging of the down-filter and maximized the sedimentation effect of TSS. The effect is to reduce the administrative costs.

In particular, according to the present invention, it is possible to effectively remove the fine dust generated from the exhaust gas and the like in the non-point source in the living area through the adsorption member on the inner surface of the vortex type oil separator with oil, to effectively remove the suspended matter. After settling the sedimentation tank, it can be efficiently removed through dredging and the like to prevent the outflow to the river.

1 is a block diagram showing the system configuration of the stormwater purification apparatus of the present invention
2 is a side cross-sectional configuration diagram of the stormwater purification plant of the present invention having the configuration of FIG.
3 is a plan view of FIG.
4 is a perspective view of the stormwater treatment apparatus of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 to 4, the rainwater treatment device of the present invention, while reducing the flow rate of the rainwater flowing in, the oil and water separation (油水 分離) is made to filter out the oil and floating impurities contained in the rainwater and settleability A first treatment tank in which precipitation of the boiling point contaminants is performed and re-injury of the precipitated boiling point contaminants is prevented; Rainwater passing through the first treatment tank flows from the bottom of the upward filter (5) to the upper portion so that fine turbidity material that cannot pass through the upward filter (5) is precipitated in the lower portion of the upward filter (5) by natural sedimentation. On the other hand, the second treatment tank to allow the rainwater passing through the upward filter (5) in the process of passing through the upward filter (5) falls by the water head difference (h) to be filtered while flowing from the top of the downward filter to the bottom; And a third treatment tank for performing microbial treatment on the rainfall inflow water passing through the second treatment tank.

At this time, the first treatment tank, rainwater inlet pipe (1a) is installed so that rainwater flows in a tangential direction with respect to the inner peripheral surface of the vortex type oil-water separator (1); A vortex flow type water separator (1) connected to the rainwater inlet pipe (1a) and guiding the rainwater flowing in a tangential direction with respect to the inner circumferential flow of the vortex; An adsorption member (1c) provided on an inner circumferential surface of the vortex type oil / water separator (1) to adsorb and collect suspended non-point pollutants such as oil in rainwater that vortex flows along the inner circumferential surface; It is configured to include; and the sedimentation tank (2) installed below the vortex type oil and water separator (1).

The suction member 1c may be a nonwoven fabric, but is not necessarily limited thereto.

The funnel-shaped inclined guide plate 1b is further provided at a lower end of the vortex type oil-water separator 1 to induce the precipitation direction of the precipitated non-point pollutants among the nonpoint pollutants contained in the rainwater flowing down by the vortex flow. do.

At this time, the suction member (1c) for adsorption of the oil component may also be provided inside the inclined guide plate (1b).

In addition, a collecting bucket (2a) is provided below the vortex oil / water separator (1) of the settling tank (2a) to collect sedimentary nonpoint pollutants in a concentrated manner.

And, on the side of the collection bucket (2a) of the settling tank 2, the fine screen (3) for filtering the contaminants contained in the rainwater flowing from the settling tank (2) to the second treatment tank, and floating non-point pollutant and solubility Media screen 4 for filtering non-point pollutants is installed sequentially in the vertical direction.
At this time, the first partition wall (W1) is installed on the fine screen and the filter screen upper side of the collecting bucket (2a) side of the settling tank (2). The first partition W1 is spaced apart from an upper surface of the rainwater treatment device in which a manhole is formed so as to allow the overflow.

On the other hand, the second treatment tank, the upstream filter 5 is installed so that the rainwater of the first treatment tank is filtered in the process of flowing from the lower portion to the upper portion, and the rainwater passing through the upward filter (5) water head difference (h It is configured to include a downward filter (7) which is installed so that the upper surface portion is located at a relatively lower position than the upward filter so as to have a fall.

In this case, as the upward filter 5, a filter of the filter type is applied, and the filter of the filter is applied as a filter of the downward filter 7, and the volume of the filter of the downward filter 7 is not less than the volume of the filter. It is preferable to become 2 times or more.
Further, the upward filter and the downward filter are separately installed with the second partition W2 interposed therebetween, and the second partition W2 is also formed to be spaced apart from the upper surface of the rainwater treatment device. The second partition W2 is configured to overflow and fall onto the downward filter upper surface.

The second treatment tank includes an upward inflow side screen 6 installed horizontally on a lower surface of the upward filter 5, and a downward outflow side screen 8 horizontally installed on a lower surface of the downward filter 7. It further comprises, it is preferable that the downflow side screen 8 is formed in detail compared to the upstream side screen (6).

On the other hand, the third treatment tank is a microbial treatment tank, and includes a microbial processor (9) for the treatment of microorganisms of rainwater flowing upward from the bottom, the microbial processor (9) is a component, the network is disposed on the upper and lower (9a, 9c) and the microbial filter in the form of a ball (Ball) attached to the inside of the mesh (9a, 9c) is attached to the microorganism to perform bioreaction and denitrification to rainwater.
In this case, the downward filter 7 and the microorganism processor 9 are separately installed with the third partition W3 interposed therebetween, and the third partition W3 is also formed to be spaced apart from the upper surface of the rainwater treatment device. Rainwater mixed with soil and contaminants when a large flow rate flows after the purification flows through the third partition W3 and flows out immediately through the discharge pipe so that the filtration unit function of the purification device is normally maintained.

On the other hand, reference numeral 12 is a separate detail screen, can be selectively installed.

In addition, two manholes 10a and 10b are formed on an upper surface of the rainwater treatment device of the present invention, and the manholes 10a and 10b are disposed above the vortex oil / water separator 1 and above the microbial filter 9b. Each is formed.

Initial rainwater purification in the initial rainwater purification facility of the present invention configured as described above is as follows.

When the rain falls, the sedimentary / floating non-point pollutants adhered to the ground with the initial rainwater move along the ground and enter the separation manhole (not shown) through the collecting pipe (not shown), and the separation manhole (not shown) Initial rainwater that enters into the non-point pollutant treatment device of the present invention along the inlet pipe.

Precipitation well non-point contaminants among the non-point contaminants included in the initial rainwater flowing into the non-point contaminant treatment apparatus of the present invention are sedimented and separated in the oil-water separation sedimentation tank 2 by its own weight. It flows in a tangential direction with respect to 1) and descends while flowing in a spiral direction on the inner surface of the vortex type oil / water separator 1.

In this process, the inner surface of the vortex type oil / water separator (1) is provided with an adsorption member (1c) capable of adsorbing floating nonpoint pollutants of oil components such as oil, grease, and the inner surface of the vortex type oil / water separator (1). Suspended non-point pollutants of the oil component flowing in the air are adsorbed and collected by the adsorption member 1c.

In addition, the rainwater flows into the vortex-type oil / water separator 1 and passes therethrough, and thus the flow velocity is reduced. Accordingly, the funnel-shaped inclined guide plate 1b provided at the lower end of the vortex-type oil / water separator 1 is used. Falling into the settling tank (2).

At this time, the sedimentary non-point pollutant contained in the rainwater is induced to a predetermined area by the guide action of the funnel-shaped inclined guide plate (1b) provided at the lower end of the vortex type oil and water separator (1), the vortex type oil and water separator (1) ) There is a collecting bucket (2a) to collect the sedimentary non-point pollutants concentrated underneath directly, so most of the precipitated non-point pollutants guided by the inclined guide plate (1b) are concentrated in the collecting bucket (2a). do.

On the other hand, rainwater flowing into the sedimentation tank (2) is passed into the second treatment tank through the washing screen (3) and the filter screen (4) installed perpendicular to the side of the collecting bucket (2a) located in the sedimentation tank.

In this case, in the small screen 3, the bulky ones of the floating non-point pollutants contained in the rainwater are filtered out, and the non-point pollutants contained in the rainwater introduced into the media screen 4 through the small screen 3 Heavy floating non-point pollutants are caught in the mesh of the filter screen 4, and soluble non-point pollutants are adsorbed to the zeolite or activated carbon, which is a porous, highly adsorptive material filled in the mesh of the filter screen 4.

On the other hand, rainwater flowing through the filter screen (4) into the second treatment tank is passed through the upward inlet side screen (6) which is installed in the horizontal direction on the lower surface of the upper filter (5) the upper filter (5) from the top of the filter In this process, the fine turbidity contaminants settle to the bottom by the interference and collision action with the fluid filter forming the upward filter (5) in the process.

The rainwater passing through the upward filter 5 from the lower portion to the upper portion falls to the upper surface of the downward filter 7 by the head difference h with the downward filter 7. (7) is passed from the top to the bottom, and the non-point pollutant is filtered once again in the course of passing through the downward filter (7), which is a filter floating filter.

At this time, as the rain drops to the upper surface of the downward filter (7) with the head difference h, evenly over the entire area of the downward filter (7) having an area more than twice as large as the upward filter (5). Can be supplied, so that the filtration action can be carried out evenly over the entire area of the downward filter (7).

On the other hand, the downward filter 7 is supplied evenly over the entire region due to the head h (h), and the filter volume itself is formed to be at least twice as large as the volume of the upward filter (5), the filter Blockage is also effectively prevented. That is, the contaminants accumulate from the side closer to the upward filter 5, and thus, the phenomenon in which the entire downward filter 7 is clogged can be effectively reduced.

The downward filter (7) is a filter floating filter, soluble non-point pollutants in the boiling point contaminants contained in rainwater is removed by the action of the zeolite or activated carbon filled in the filter medium floating filter. For reference, zeolite has high hydrophilicity and excellent ability to adsorb water molecules without damaging crystal structure. There are natural zeolite produced naturally from rock or clay and artificial zeolite made artificially. It is used for the removal of ammonia nitrogen and heavy metals. In addition, activated carbon is used to strongly adsorb harmful chemicals contained in rainwater and to purify water safely.

On the other hand, in the treatment of rainwater, the rainwater passing through the downflow filter 7 passes through the downflow side screen 8 which is horizontally installed on the bottom surface of the downflow filter 7, wherein the downflow side screen 8 As the silver mesh is a very small detail screen, non-point pollutants are filtered out as they pass through it.

Further, the rainwater passing through the downwardly discharged side screen 8 flows into the space S secured to the lower portion of the downwardly discharged side screen, and because the space S is secured, the sedimentation and deposition space of the fine precipitate is secured. This can be secured, and when the lower side of the space (S) to a retractable structure (not shown) it is possible to easily remove the sedimentation and deposited fine deposits.

Then, the rainwater passing through the space below the downflow side screen 8 flows into the third treatment tank and undergoes microbial treatment.

That is, the rainwater introduced into the third treatment tank passes through the microbial filter 9b introduced into the mesh 9a through the mesh 9a of the microbial processor 9, and is attached to the microbial filter 9b in the process. The microorganisms come in contact with rainwater nonpoint pollutants to perform bioreaction and denitrification, thereby making the biochemical treatment of rainwater natural.

The rainwater that went through the microbial treatment in this way is discharged through the discharge pipe (11).

On the other hand, when rainwater does not pass normally due to the blockage of the filter portion, etc. introduced into the processing device is discharged through the emergency waterway.

That is, the rainwater treatment apparatus of the present invention is provided with a structure for preventing backflow (that is, the third partition W3 protruding below the right manhole 10b of FIG. 2), and thus the rainwater is blocked due to the clogging of the filtration unit. When the height of the third partition W3 is higher than or equal to the height of the third partition W3, the rainwater flowing over the third partition W3 is discharged directly through the discharge pipe, thereby preventing a backflow phenomenon due to the rise of the water level.

The non-point contaminant treatment apparatus of the present invention which acts as described above cartridges the upward filter 5 as the filter medium type filter and the downward filter 7 as the filter medium filter type, thereby making it safe and easy to replace the filtering device. By doing so, the efficiency of the maintenance of the purification plant can be improved.

That is, the filter medium flow filter is a stainless steel material is a filtration device is filled only within the 70 to 90% range so that the spherical filter medium made of polypropylene can flow the free space in the outer case having a mesh, the filter medium filter is zeolite Alternatively, a well-known filtration device filled with activated carbon, both of which are factory-manufactured in the form of a cartridge, and in the case of replacement, all the installed filters are removed and a new filter is inserted.

Therefore, the size is reduced compared to the conventional, the weight is reduced enough to be handled by one worker, so that replacement work for maintenance can be performed very easily.

In particular, the filter medium flow filter is able to maximize the maintenance efficiency as the micro-contaminants accumulated in the filter material is naturally washed with the continuous storm water generation.

In addition, the two manholes 10a and 10b formed on the upper surface of the treatment tank of the storm water treatment apparatus are separately formed above the vortex oil / water separator 1 and the microbial filter 9b that need maintenance. Accordingly, during the maintenance and management of the storm water treatment apparatus, the state of each part of the storm water treatment apparatus may be checked through the manholes 10a and 10b, and then may be quickly and individually entered and maintained as necessary, thereby treating rainwater treatment. Access to each part of the device is better and maintenance can be made safer and more convenient.

On the other hand, the present invention is not limited to the above-described embodiments, and may be changed and modified in various forms without departing from the scope of the technical spirit of the present invention.

Therefore, the above-described embodiments should be considered as illustrative and not restrictive, and therefore, the present invention is not limited to the above description and may be changed within the scope of the appended claims and their equivalents. Will be called.

The present invention is economical because it is possible to reduce the scale of the purification device because the first rainwater with high pollution is separated and intensively purified in consideration of the runoff characteristic during rainfall.

In addition, the present invention allows only the initial rainwater flows into the purification device, that is, the filter unit, and the rainwater mixed with large amounts of soil and sediments generated after the initial rainwater flows through the overflow pipe without being introduced into the purification device and purified. Maintenance is easy because the filtration function of the device is normally maintained.

In particular, the present invention by the integrated multi-stage treatment to prevent the non-point pollutants introduced with the initial rainwater step by step and effectively to match the characteristics of the source of pollution to prevent water pollution of public waters and groundwater, such as rivers, lakes, etc., Through the protection of the natural ecosystem, easy maintenance and low cost, the industrial availability is very high because it can provide a very useful and effective initial stormwater treatment device.

1: vortex type oil / water separator 1a: rainwater inlet pipe
1b: inclined guide plate 1c: adsorption member
2: settling tank 2a: collecting bucket
3: detail screen 4: media screen
5: upward filter 6: upward inflow screen
7: Downflow filter 8: Downflow side screen
9: microbial processor 9a: mesh
9b: microbial filter 10a, 10b: manhole

Claims (11)

Oil-separation is carried out to filter out oil and floating contaminants contained in rainwater, while precipitation of sedimentary boiling point contaminants is reduced while the incoming rainwater flow rate is reduced. 1 treatment tank;
Rainwater passing through the first treatment tank flows from the bottom of the upward filter (5) to the upper portion so that fine turbidity material that cannot pass through the upward filter (5) is precipitated in the lower portion of the upward filter (5) by natural sedimentation. On the other hand, in the course of passing through the upward filter 5, the rainwater passing through the upward filter 5 is dropped by the water head difference (h) to flow while flowing from the top of the downward filter (7) to the bottom to the second A treatment tank;
And a third treatment tank for performing microbial treatment on rainfall inflow water flowing upwardly through the second treatment tank.
The first treatment tank is connected to the rainwater inlet pipe (1a) and the rainwater inlet pipe (1a) is installed so that rainwater flows in a tangential direction to the inner peripheral surface of the vortex type oil-water separator (1) and flows in a tangential direction to the inner circumferential surface A vortex-type oil and water separator (1) having a cylindrical shape for guiding the rainwater to vortex flow, and the suspended non-point pollutants such as oil in the rainwater which is provided on the inner circumferential surface of the vortex-type oil and water separator (1) and vortex flows along the inner circumferential surface. Of the sedimentary non-point pollutants among the non-point pollutants included in the rainwater adsorbing member 1c and the lower part of the vortex-type oil / water separator 1 that are collected in the rainwater by vortex flow along the inner circumferential surface of the vortex-type oil / water separator. A funnel-shaped inclined guide plate 1b for guiding the settling direction to a predetermined region, a settling tank 2 installed below the vortex type oil separator 1, and a vortex type oil separator of the settling tank 2 Is provided below and is configured to include a collecting bucket (2a) for intensive collection of precipitated non-point pollutant,
The second treatment tank includes an upward filter (5) installed so as to be filtered in a process in which the rainwater of the first treatment tank flows from the bottom to the upper portion, and the rainwater head difference (h) passing upward through the upward filter (5). It is configured to include a downward filter (7) which is installed so that the upper surface portion is located at a relatively lower position than the upward filter (5) to have a fall,
The third treatment tank includes a microorganism processor for treating microorganisms, and the microorganism processor is a component that is introduced into upper and lower meshes 9a and 9c and the upper and lower meshes 9a and 9c. And a microbial filter 9b in the form of a ball to which microorganisms performing bioreaction and denitrification on rainwater are attached.
On the side of the collection bucket 2a of the sedimentation tank 2, the fine screen 3 for filtering the contaminants contained in the rainwater flowing from the sedimentation tank to the second treatment tank, and the floating non-point pollutants and the soluble non-point pollutants are primarily Filtering screen (4) is installed sequentially in the vertical direction,
A first partition wall W1 is installed on the fine screen 3 and the filter screen 4 on the side of the collection bucket 2a of the sedimentation tank 2, and the first partition W1 is provided with a manhole so as to allow overflow. (10a, 10b) is formed spaced apart from the upper surface of the storm water treatment apparatus,
The upward filter 5 and the downward filter 7 are separately installed with the second partition W2 interposed therebetween, and the second partition W2 is also formed to be spaced apart from the upper surface of the rainwater treatment device. Rainfall that passed through) is configured to flow over the second partition (W2) to fall to the upper surface of the downward filter (7),
The downward filter 7 and the microorganism processor 9 are separately installed with the third partition W3 interposed therebetween, and the third partition W3 is also formed to be spaced apart from the upper surface of the rainwater treatment device, after the purification of the initial rainwater. The rainwater mixed with the soil and the contaminants when a large flow rate flows into the overflow of the third partition W3 flows straight through the discharge pipe 11 to maintain the function of the filtration unit of the purification device. The stormwater treatment apparatus, characterized in that configured to prevent backflow by being discharged to the discharge pipe (11) by flowing over the third partition (W3) when the height rises more than the height of the third partition (W3) due to clogging. delete delete delete delete delete The method of claim 1,
An upwardly inflow side screen 6 installed horizontally on a lower surface of the upward filter 5;
And a downflow side screen (8) installed horizontally on a lower surface of the downflow filter (7). delete In the storm treatment method using the storm treatment apparatus of claim 1,
(A) causing the rainwater to fall to the sedimentation tank side with vortex flow;
(B) allowing the floating boiling point contaminants such as oil contained in the rainwater to be adsorbed during the storm flow of the rainwater;
(C) precipitating the precipitated non-point pollutant contained in the rainwater that finished the vortex flow;
(D) allowing the rainwater passed through step (C) to pass through the filter while flowing upward;
(E) allowing the rainwater passed through step (D) to pass through the filter while flowing downward;
(F) storm water treatment step characterized in that it comprises the step of passing through the microorganism processor while the rainwater went through the step (E). The method of claim 9,
The rainwater passing through the filter of step (D) falls with a water head difference (h) to flow into the filter of the step (E). 11. The method of claim 10,
As a filter through which rainwater of step (D) passes, a filter medium type filter is installed.
The rainwater passing filter of step (E) is a storm water treatment method, characterized in that the filter medium floating filter is installed.

Images