KR102081960B1 - Non-point source contaminant treatment system using variable filtration - Google Patents

Abstract

According to an embodiment of the present invention, a non-point pollution reduction system for backwashing automation using a driving chamber-changing filtration method comprises a non-point pollution reduction facility improved to filter and process initial rainwater and a monitoring control measurement facility to monitor and control the non-point pollution reduction facility. Therefore, pollutant removal efficiency and backwashing effects are improved by the non-point pollution reduction facility to facilitate water quality management and easily respond to load changes to prevent abnormal operation and facility damage by an excessive water inflow. Moreover, automatic backwashing can be carried out during a resting period after raining ends by the monitoring control measurement facility to prevent decomposition of the remaining pollutants in the non-point pollution reduction facility and secondary pollution to facilitate maintenance and management and prevent non-point pollutants from being spilled into a river valley.

Description

NON-POINT SOURCE CONTAMINANT TREATMENT SYSTEM USING VARIABLE FILTRATION}

The present invention relates to a nonpoint pollution reduction system. More specifically, the present invention relates to a non-point pollution reduction system for filtering and purifying pollutants while passing through initial rainwater containing non-point pollutants.

For example, pollutants can be broadly divided into point pollutants and nonpoint pollutants. Point pollutants are pollutants emitted from so-called point sources, which have a clear and limited point of occurrence, such as domestic sewage or industrial wastewater from households or factories.

Non-point pollutants, on the other hand, refer to pollutants that occur in a wide range of areas without specific areas of contamination such as farmland, grassland, forests or roads.

Such nonpoint pollutants include, for example, fertilizers, pesticides, barn effluents, dust and heavy metals, pathogenic microorganisms, organic compounds, and radioactive materials that are sprayed on farmland. It is washed by rainwater and flows into nearby rivers and groundwater.

Therefore, it is very important to block initial rainwater from flowing directly into the river or groundwater. The representative measures to prevent environmental pollution by non-point pollutants are non-point pollution reduction facilities.

For example, the Ministry of Environment introduced a total water pollution management system that regulates the total amount of pollutants coming from the watershed to manage point and nonpoint sources, and in order to maintain the quality of rivers within the allotted load range, The mandatory reporting and installation of non-point reducing facilities for the management of non-point pollutants was made. In accordance with the Act on Water Quality and Aquatic Conservation and the Enforcement Decree of the Act, 2007, roads were defined as non-point pollutant facilities and non-point pollution reducing facilities should be installed. In 2013, non-point pollution reduction facilities were installed on roads passing through water supply protection zones, water intake facilities, special measures zones, and the four rivers.

The non-point pollution abatement facility is one of the water treatment facilities, and serves to filter the contaminants and pass them to a purified state while passing the initial excellent and combined sewage overflow water (CSOs) mixed with non-point pollutants.

On the other hand, in order to maintain the best performance of the non-point pollution reduction facility for treating the initial excellent and combined sewage overflow water (CSOs), various contaminants filtered by the built-in screen filter or media, such as capture sludge, contaminants or soils, etc. It should be removed from time to time so that the screen filter or filter media functions as originally designed.

To this end, the prior art (Patent Document 1) has a main body having a space formed therein, a filtration chamber which is formed at the upper end of the main body and has a plurality of longitudinal inflow paths formed thereon and communicating with the outlet line, and inside the filtration chamber. Disclosed is a non-point pollution treatment apparatus including at least one floating filter formed and washing means formed on the filtration chamber to wash the floating filter.

However, the non-point pollution treatment apparatus according to the prior art is not only very low treatment efficiency of sedimentary solids and contaminants, oil, there is a difficulty in maintenance, there is a problem that is difficult to apply in the field because the detailed design criteria are not clear. In addition, there is a problem in that it takes a lot of manpower, time and money to handle foreign matters detached from the flocculation media, which makes maintenance difficult.

In addition, the non-point pollution treatment apparatus according to the prior art should be configured with a separate pipe line and a suction pump for discharging contaminants by backwashing, the suction power is lowered according to the length of the pipe line, the discharge efficiency of the pollutants is remarkable There is a problem falling.

In order to solve this problem (Patent Document 2) is to make the backwash of the pollutants adsorbed on the outer surface of the filter media automatically, the boiling point equipped with a backwash automation system that can improve the treatment efficiency of non-point pollution reduction facility Disclosed is a filtration method using a pollution reduction facility.

However, in the filtration method according to the prior art (Patent Document 2), the effect is determined by the size of the pores between the media and the media, and in order to increase the removal efficiency, the size of the pores must be reduced, and for this purpose, the method of reducing the particle size of the media is provided. However, there is a problem that the result is that the treatment capacity is reduced due to a significant decrease in the amount of filtration.

In other words, reducing the particle size of the media in order to increase the filtration efficiency is difficult to apply because it leads to the loss of the treated water and the backwash effect. Therefore, diversified improvement of the filtration method is required.

In addition, in order to increase the filtration effect, the particle size of the filter medium should be made smaller and the thickness of the filter medium layer should be thicker. In this case, there is a problem in that the effect of the backwashing to separate and discharge the pollutant filtered inside the filter bed is significantly reduced.

In this situation, the capacity of the backwashing pump and the backwashing tank is increased to express the backwashing effect, which has a problem in that the economic efficiency is significantly lowered.

On the other hand, as described above, the non-point pollution reduction facility is a facility for preventing inflow of pollutants into rivers and lakes due to initial rain or the like during rain, and is targeted to initial rains having a high concentration of pollution.

However, rainfall patterns are not always constant, they are not only very variable but also intensive.

Therefore, when excessively strong initial rainfall exceeding the planned quantity is introduced into the non-point pollution abatement facility temporarily during the period of very strong rainfall, excessive pressure is placed on each part of the facility including the filtration unit, which may cause problems such as abnormal operation and maintenance factors. Can be generated.

Another problem is that the period from the end of the rainfall to the next rainfall is also very variable and variable.

That is, as known (Patent Document 2), the general filtration method through the non-point pollution reduction facility detects the pressure change (loss head) flowing into the filter bed to determine the degree of blockage of the filter medium, and backwashing when the loss head is high If a mild rain has caused the contaminants to flow but no loss heads are sufficient to backwash, the contaminants will remain between the media layers until the next rainfall.

The contaminants between the media layers are decayed by microorganisms over time, which causes problems such as decay, secondary contaminant elution, and causes the media layers to agglomerate to be filtered and backwashed. Significantly lowers the effect.

In addition, if the rainfall is terminated immediately before the backwashing process, the backwashing proceeds as soon as the initial rainwater flows in the next rainfall, and thus it is impossible to achieve the treatment effect of the initial rainfall.

In addition, the pretreatment tank is a process of precipitating and removing influent pollutants, which is a very important process for removing particulate contaminants. About 30% of the pollutants in the influent are precipitated out in the pretreatment tank.

The contaminants that have been sedimented and removed at the bottom accumulate without being discharged and are then removed by dredging at the maintenance point. The contaminants left in the lower part of the pretreatment tank for a long time decay by decomposition by microorganisms, elute the secondary contaminants, which has a problem that acts as a factor that adversely affects the post-process.

Republic of Korea Patent Publication No. 10-1288331 Republic of Korea Patent Publication No. 10-1653780

An object of the present invention is to improve the non-point pollution reduction facility of the prior art to improve the removal efficiency and backwashing effect of the pollutants, driving to prevent abnormal operation and damage to the facility caused by the inflow of excessive influent It is to provide a backwash automated non-point pollution reduction system using chamber variable filtration.

In order to solve the above problems,

The backwash automation non-point pollution reduction system using the drive chamber variable filtration method according to an embodiment of the present invention is a non-point pollution reduction facility and the non-point pollution reduction facility that discharges by filtering the initial rainwater that has not overflowed the induced overflow portion during rainfall. Monitoring and control equipment for monitoring and controlling the system;

Including;

In the non-point pollution reduction facility, first and second storage tanks having a storage space in which initial rainwater flows in the rain, are partitioned through partition partitions standing up in the storage space, and initial rainwater flowing into the first storage tank. Non-power flow control device is provided in the rectification screen installed in the first storage tank to separate the suspended matter, Ball Top Valve (Ball Top Valve) is installed on the upper part of the partition bulkhead to block the inflow with no power according to the initial excellent water level and Pre-treatment tanks installed on the bottom surfaces of the first and second storage tanks, respectively, and including first and second drain pumps for discharging the sludge in the storage space and the backwash water to the sewage pipe;

The pre-treatment tank is provided with a filtration space is introduced into the initial excellent flow upflow type, the lower mesh network is fixed to the lower portion of the filtration space, the foamed media constituting the media layer between the lower mesh network is accommodated A hemispherical driving chamber is installed on the upper part of the upper mesh network which can be elevated in the upper part of the filtration space so as to secure the upper and lower flow spaces, and the upper side of each corner of the upper mesh network prevents the upper mesh network from tilting and Induction valve is installed to move to the guide rail, the guide rail for guiding the lifting of the guide rail is installed on the wall of the filtration space is compressed by the media layer through the weight of the integral structure to reduce the contaminants in the state of reducing the voids between the media Filtration tank to filter;

The discharge space communicating with the filtration space is provided to store the filtered effluent, and a discharge passage is formed to discharge to the outside according to the water level thereof, and a discharge passage is installed in the discharge space to counter-flow the effluent to backwash water in the filtration space. A discharge tank including a third drain pump to supply and a discharge water level sensor installed in the discharge space; And

It is connected to the third drain pump is configured in the water washing unit and the lower portion of the filtration space to inject the backwash water in the upper portion of the filter medium to spray the compressed air supplied through the air generating device to the filter chamber to collect Thereby raising the unitary structure, and the backing layer comprises an air washing unit configured to expand and relax to allow variable filtration;

Including,

The monitoring control measuring facility controls the driving of the first, second and third drain pumps and the air generating device according to the signal transmitted through the loss head sensor installed in the pretreatment tank and proceeds with the backwash automation process. A central control unit for controlling the driving of the third drain pump according to a signal transmitted through the second pump to block the reverse flow of the effluent; And

Installed in the upper land portion of the non-point pollution abatement facility to measure rainfall, and at the end of the rainfall, the rainfall end signal is transmitted to the central control unit, and the central control unit controls the driving of the first, second, and third drain pumps and the air generating device to terminate the rainfall. Rainfall detection unit for the backwash automation process is performed during the rest period;

It may include.

In addition, in the backwash automated non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention, the non-point pollution reduction facility is composed of a two-layer structure buried underground, and the pretreatment tank and The filtration tank and the discharge tank are disposed, the central control unit is installed on the upper floor accessible through the entrance exposed to the ground, the rainfall detection unit may be installed in the upper land.

In addition, in the backwash automatic non-point pollution reduction system using the drive chamber variable filtration method according to an embodiment of the present invention, the upper floor of the non-point pollution reduction facility is connected to the ventilation and air supply facilities installed on the ground, the interior ceiling Light fixtures may be installed at the

In addition, in the backwash automatic non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention, the first and second drain pumps are concave to the bottom surface of the storage space so that the settling sludge is collected in one place. It is installed in the formed installation groove can be discharged sediment sludge into the sewage pipe.

In addition, in the backwash automatic non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention, the non-powered flow control device is the buoyancy body and the connecting shaft and as the buoyancy body is raised and lowered according to the level of the pretreatment tank. A valve device connected through the central axis opens and closes the horizontal supply pipe to adjust the flow rate of the fluid.

In addition, in the backwash automation non-point pollution reduction system using the driving chamber variable filtration method according to an embodiment of the present invention, the backwash automation process is performed when the water level reaches a high level of the head of the head sensor, the loss head Driving a second drain pump through the central control unit by transmitting a signal to the central control unit;

When the water level reaches the middle level of the loss head sensor, the second drain pump is stopped by the central controller, and the air generator is driven during the set time of the timer of the central controller to remove the pollutants. step;

Discharging the polluted water by stopping the driving of the air generator by the central controller and driving the second drainage pump after the set time elapses;

Stopping the driving of the second drain pump through a central controller and supplying the backwash water by driving the third drain pump when the water level reaches the low level of the loss head sensor in the driving process of the second drain pump;

When the water level reaches the middle level of the discharge level sensor, the discharge level sensor sends a signal to the central control unit to stop driving of the third drain pump through the central control unit, and drives the second drain pump to backwash water. Discharging it; And

When the water level reaches the low level of the loss head sensor, the loss head sensor may transmit a signal to the central controller to stop driving of the second drain pump through the central controller.

In addition, in the backwash automatic non-point pollution reduction system using the drive chamber variable filtration method according to an embodiment of the present invention, the filtration tank is connected to the drive chamber and the air outlet pipe for discharging the air collected by the drive chamber; An automatic valve connected to a central control unit to automatically open and close the air outlet pipe;

It may further include.

In addition, in the backwash automatic non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention, the central control unit first within 48 hours after 15 hours of the transmission of the rainfall end signal from the rainfall detection unit By controlling the operation of the 2,3 drain pump, the air generator, and the automatic valve, the backwash automation process can be performed to prevent the decay and secondary pollution of the contaminants remaining in the non-point pollution reduction facility.

In addition, in the backwash automation non-point pollution reduction system using the driving chamber variable filtration method according to an embodiment of the present invention, the manager by the manager terminal according to the period until the next rainfall after the backwash automation process The central control unit can be activated and further backwash automation can be performed.

Such a solution will become more apparent from the detailed description for carrying out the following invention based on the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be construed in the usual and dictionary sense, and the inventors will be required to properly define the concepts of terms in order to best describe their invention. On the basis of the principle that it can be interpreted as meaning and concept corresponding to the technical idea of the present invention.

According to one embodiment of the present invention, by improving the non-point pollution reduction facility and the configuration of the monitoring and control measurement facility to improve the removal efficiency and backwashing effect of pollutants, water quality management is easy, load fluctuation through the flow control device It is easy to cope with the problem, and it can prevent abnormal operation and damage to facility due to excessive inflow of inflow water.

In addition, according to an embodiment of the present invention, by performing a backwash automation process during the rest period after the end of the rainfall through the monitoring control facility, it is possible to prevent the corruption and secondary pollution of the pollutants remaining in the non-point pollution reduction facility As a result, maintenance is easy and non-point pollutants can be prevented from leaking into the watershed.

1 is a cross-sectional view showing an overall backwash automatic non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention.
Figure 2 is an enlarged view showing 'A' of the backwash automatic non-point pollution reduction system using the drive chamber variable filtration method according to FIG.
3 to 4 is a perspective view showing the operation of the non-motor flow control device according to an embodiment of the present invention.
5 to 6 is an enlarged view showing 'B' of the backwash automatic non-point pollution reduction system using the drive chamber variable filtration method according to FIG.
Figure 7 is a photograph showing the media in accordance with an embodiment of the present invention.

Specific aspects and specific technical features of the present invention will become more apparent from the following detailed description and embodiments related to the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used to refer to the same components, even if displayed on different drawings. In addition, in describing one embodiment of the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only to distinguish the components from other components, and the nature, order, order, etc. of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a cross-sectional view showing a non-backwash automatic non-point pollution reduction system using a drive chamber variable filtration method according to an embodiment of the present invention, a two-layer structure is buried underground, pre-treatment that the initial rainwater is introduced A non-point pollution reduction facility (1) consisting of a tank (100), an initial excellent filtration and a filtering tank (200) for backwashing the filter medium and a discharge tank (400) for discharging the effluent are shown.

FIG. 2 is an enlarged view showing 'A' of the backwash automatic non-point pollution reduction system using the driving chamber variable filtration method according to FIG. 1, and the rectification screen 130 is included in the storage space 110 of the pretreatment tank 100. And first and second drain pumps 170 and 171 are installed, and partition partitions 116 are installed in the storage space 110 so that the pretreatment tank 100 includes the first storage tank 112 and the second storage tank ( 114), and shows a coupling relationship in which the non-powered flow regulator 150 is installed on the divided partition 116.

3 to 4 is a perspective view showing the operation of the non-powered flow control device according to an embodiment of the present invention, the inlet of the horizontal supply pipe 151 is partially cut through the horizontal supply pipe 151 through the valve device 152 It shows that the internal flow path of the) is opened and closed.

5 to 6 is an enlarged view showing 'B' of the backwash automatic non-point pollution reduction system using the drive chamber variable filtration method according to FIG. 1, wherein the lower mesh network 223 is fixed to the filtration space 210. A pair of hemispherical drive chambers 224 are respectively formed on the upper portion of the upper mesh network 222 configured to be variable in the filtration space 210, respectively, and the upper side of each corner of the upper mesh network 222. An induction valve 225 is installed at the guide rail, and a guide rail 226 for guiding the induction valve 225 shows a coupling relationship installed at the wall surface of the filtration space 210.

As shown in Figures 1 to 6, backwash automated non-point pollution reduction system (hereinafter referred to as 'non-point pollution reduction system') using a drive chamber variable filtration method according to an embodiment of the present invention is a non-point pollution reduction facility (1 And monitoring control measuring facilities (3). And the non-point pollution reduction facility (1) is composed of a two-layer structure embedded in the basement, the pre-treatment tank 100, the filtration tank 200 and the discharge tank 400 is configured in the relative lower filtration layer, the relative upper layer The central control part 350 which comprises the monitoring control measuring facility 3 is provided in the phosphorus maintenance layer 1a.

The pretreatment tank 100 is made of inflow of the initial rain during the rain, for example, the coarse solid solids (hereinafter, referred to as 'floating') included in the initial rain is separated from the initial rain and outflow to the filtration tank 200. Let's go.

The pretreatment tank 100 is divided into first and second storage tanks 112 and 114 through the partition partition wall 116 standing up in the storage space 110. The first storage tank 112 is connected through the induction current flow portion 102 and the inlet pipe 104 is configured to enter the initial rainwater that did not flow over the induced overflow current portion 102 during the rainfall, the storage space 110 It is installed on the top of the) includes a rectifying screen 130 for separating the suspended matter from the initial excellent water flowing through the inlet pipe (104).

In addition, the first storage tank 112 and the second storage tank 114 constituting the pretreatment tank 100 to prevent the occurrence of defects in the non-point pollution reduction facility (1) due to the inflow of excessive initial rain due to the concentrated rainfall. Between the non-powered flow regulator 150 is configured.

That is, when the water level of the pretreatment tank 100 rises due to an overload in the post process due to excessive inflow of initial excellent water, the flow regulator 150 constituted by a ball top valve is shut off by no force. It will automatically prevent excessive inflow of initial rainfall.

Here, the non-power flow control device 150 will be described in detail. The non-power flow control device 150 has a horizontal supply pipe 151 and the horizontal supply pipe 151 which are installed in a flanged manner on the divided partition 116. By opening and closing the valve, it includes a valve device 152 for adjusting the flow rate of the fluid, that is, the initial excellent.

The horizontal supply pipe 151 is a kind of pipe formed so that fluid flows along the inner flow path, and a flange fastening portion 151a is formed at one end thereof and is installed at the upper portion of the partition partition 116. And as a component of the valve device 152 inside the inlet for the initial excellent inflow, the disk-shaped valve plate 153 is rotatably installed to adjust the flow rate of the fluid.

In addition, the central shaft 154 is installed on both sides of the center line of the valve plate 153 outside the horizontal supply pipe 151, and one end 155a of the connecting shaft 155 is connected to the central shaft 154. Meanwhile, the buoyancy body 156 is installed at the other end 155b of the connecting shaft 155 to configure the valve device 152.

The valve plate 153 may be, for example, formed in a disc shape having substantially the same size as the inner diameter of the horizontal supply pipe 151 and rotatably installed in the inner flow path of the horizontal supply pipe 151. In addition, the buoyancy body 156 is formed in the form of a ball (Ball) through a material that can easily float on water, such as styrofoam or rubber or plastic, so that the buoyancy body 156 may rise or fall according to the water level.

In addition, the central shaft 154 may be fastened to the valve plate 153 by a pin method or a screw method, and one end 155a of the connecting shaft 155 may also be pinned or screwed to the central axis 154. As it can be fastened, it can be replaced easily and is effective in terms of maintenance.

The connecting shaft 155 and the central shaft 154 are a kind of medium for connecting the valve plate 153 and the buoyancy body 156, and are arranged in a direction crossing each other on the center line of the valve plate 153, thereby providing a buoyancy body. 156 and the valve plate 153 interlock with each other.

Therefore, according to an embodiment of the present invention, when the buoyancy body 156 rises as the water level of the second storage tank 114 rises, the valve plate 153 closes the internal flow path of the horizontal supply pipe 151. By the vertical water supply pipe 30, the initial excellent water is blocked to flow into the second storage tank (114).

On the contrary, when the water level of the second storage tank 114 is lowered and the buoyancy body 156 is lowered, the initial excellent water is opened by opening the internal flow path of the horizontal supply pipe 151 through the valve plate 153. 114), a series of movements are performed without power.

On the other hand, the induced overflow portion 102 according to an embodiment of the present invention, for example, when the initial rainfall is 25mm / hr, the initial rainfall is to be introduced to the first storage tank 112 side through the inlet pipe 104 In addition, the discharge line 106 is configured such that the initial rainwater overflowed after the initial rainfall is discharged toward the rain pipe.

In addition, the storage space 110 of the pretreatment tank 100 detects the inflow of the initial rainwater flowing through the induction overflow portion 102 and the loss head of the initial rainwater in real time to detect the water level of the initial rainwater flowing into the storage space 110. When the high level (H) is reached at the middle level (M) or low level (L), the loss head sensor 120 for transmitting the backwash driving signal to the central control unit 350 so that the backwash is automatically performed It is composed.

That is, when the initial rainfall flows into the pretreatment tank 100 and reaches a specific level of the loss head sensor 120, the loss head sensor 120 transmits a backwash driving signal to the central controller 350. , The automatic backwashing process is performed by the backwashing unit 300 configured in the filtration tank 200.

In other words, the level of the loss head is constant by detecting the level of the head of the loss according to the level of the storage space 110 generated by the resistance (blocking phenomenon) of the filtering means 220 configured in the filtration space 210. When the water level is reached, it is determined that the backwashing of the filtration means 220 is required, so that the backwashing automation process is performed.

The pretreatment tank 100 precipitates the initial excellent water introduced into the first storage tank 112 through the inlet pipe 104 to separate and separate the suspended matter first, and the second excellent storage tank separated from the initial excellent water 114. The first and second storage tanks 112 and 114 partition the partition bulkhead 116, and thus the first precipitation tank in which the first precipitation is completed, the first rainwater to the second storage tank 114 side An upper drain passage 115 is formed to be supplied, and a non-powered flow regulator 150 is installed in the upper drain passage 115.

The second storage tank 114, when the initial rainwater flows through the non-powered flow control device 150, the secondary precipitation is made to be separated from the initial rainwater and the suspended solids, and the initial excellent water separation is completed, the filter tank 200 It is to be introduced into the filtration space 210 side of the), for this purpose, the lower supply passage 118 for introducing the initial excellent water made of secondary precipitation between the second storage tank 114 and the filtration tank 200 to the filtration space 210 side Is formed.

Here, the first drain pump 170 is provided on the bottom surface of the first storage tank 112 to discharge the settling sludge of the storage space 110 to the storage space 110 of the second storage tank 114. In addition, a second drain pump 171 is provided on the bottom surface of the second storage tank 114 so that when the backwash drain is discharged during the backwashing process, the backwash water is discharged together with the settling sludge in the storage space 110. To be discharged.

The storage spaces 110 of the first and second storage tanks 112 and 114 form an installation groove 110a concave on the bottom surface so that the sedimented sludge is collected in one place, so that the first and second drainage holes are installed in the installation groove 110a. The pumps 170 and 171 are provided, and thus, sedimentation sludge does not remain on the bottom surface of the storage space 110, for example, through the first and second drain pumps 170 and 171. By being completely discharged into the furnace, the pretreatment tank 100 is always kept clean so that the non-point pollutants introduced during the next rainfall can be more effectively treated.

The filtration tank 200 is introduced into the initial rainwater preliminary purification by the precipitation through the pre-treatment tank 100, it is filtered through the filtration means 220 to be discharged to the discharge tank 400, backwashing treatment unit Through 300, the contaminants generated during the filtration process are removed.

The filtration tank 200 is formed with a filtration space 210 into which the initial rainwater, which is first purified, is introduced. In the filtration space 210, an effluent discharge passage 212 for discharging the effluent to the discharge tank 400 is formed at an upper portion thereof, and a lower supply passage 118 is formed at the lower portion thereof to introduce initial rainwater. Filtering means 220 for filtering the solids and fine contaminants contained in the initial excellent water supplied from the passage 118 is configured.

The filtration means 220 has, for example, a high speed of filtration adsorption, excellent wear resistance, and no hydrolysis, so that the maintenance cost is very low and the polyvinyl alcohol (PVA) having excellent filtration efficiency is excellent. Or fibrous media consisting of polyurethane (hereinafter referred to as "media").

That is, the filter medium 221 is made of polyvinyl alcohol (PVA) or polyurethane (PU), and may be formed of a cube having a thickness between 100 and 250 mm (see FIG. 7). The filtration means 220 includes a lower mesh network 223 and an upper mesh network 222 so that the initial excellent excellent filtration treatment can be made while easy floating.

Specifically, the filtering means 220 secures a vertical flow space to accommodate the plurality of media 221 therein, and has a mesh form through which initial excellent water, contaminants including sludge, and backwash water pass. An upper mesh network 222 of FIG. 5 and a lower mesh network 223 of FIG. 5 are disposed below the upper mesh network.

Here, the filter medium 221 according to an embodiment of the present invention is composed of a foam material having a specific gravity of 1 and having elasticity. Therefore, during filtration, the filter medium 221 is compressed through the upper mesh network 222 to perform the filtration process, and when backwashing, the filter medium 221 is relaxed through the upper mesh network 222 to maximize the backwashing effect. do.

For example, the upper mesh net 222 and the lower mesh net 223 is a kind of mesh made of stainless steel, and an air washing unit 330 and a water washing unit 340 are disposed at upper and lower portions thereof, respectively, and filtering means. The automatic backwashing process of 220 is made, and is configured to pass through the contaminants and backwashing water generated during backwashing and be drained to the storage space 110.

In addition, the lower mesh net 223 and the upper mesh net 222 compresses the media layer formed through the plurality of media 221 at the time of filtration to fix the media 221 and at the same time between the media 221 By reducing the voids to increase the efficiency of removing contaminants by filtration, the back and forth flow space is extended to the extent that the filter medium (221) can flow freely during backwashing, to easily remove the pollutants between the filter medium (221) You can do it.

To this end, the lower mesh network 223 is fixed to the filtration space 210, while the upper mesh network 222 is configured in a variable type so as to be lifted. And each of the hemispherical driving chamber (Chamber) consisting of at least one pair on the upper portion of the upper mesh network 222 is configured in one piece, the upper mesh network 222 on the upper side of the upper mesh network 222, for example, each corner Induction valve (225 of FIG. 5) is installed so that can be elevated without tilting, and a guide rail (226 of FIG. 5) for guiding the guide valve 225 is installed on the wall surface of the filtration space 210. .

In addition, an air outlet pipe (227 of FIG. 5) is installed at an upper portion of each of the driving chambers 224 to discharge the collected air as needed, and an automatic valve (FIG. 5) is provided in the air outlet pipe 227. 228) are installed. The automatic valve 228 is connected to the central control unit 350 to automatically open and close the air outlet pipe 227.

Therefore, according to one embodiment of the present invention, the filtration layer during the initial excellent filtration is pressed downward by the weight of the integrated structure consisting of the upper mesh network 222, the driving chamber 224 and the induction valve 225. At this time, the elastic foam material 221 is in close contact with each other, the pores between the media layer is small and the efficiency of removing pollutants by filtration is improved.

On the contrary, during backwashing, air bubbles of the backwashing compressed air supplied through the air washing unit 330 from the air generating unit 230 shake the intermediary layers to drop contaminants. And the air passing through the media layer is collected in the drive chamber 224, the integrated structure including the upper mesh network 222 buoyancy generated by the collection of air is raised to the top.

That is, as the unitary structure rises, the filter media layer expands and relaxes. As a result, the filter media 221 can flow freely in the up and down flow spaces, so that the contaminants between the filter media are easily detached and removed. Becomes possible.

At this time, the automatic valve 228 of the air outlet pipe 227 prevents the air collected in the OFF state from flowing out. In the case of backwashing, the automatic valve 228 is turned ON so that the collected air is discharged and filtered. It will be able to be in the initial state.

On the other hand, in the filtration space 210 according to an embodiment of the present invention, a backwashing unit for cleaning the contaminants fixed to the filtration means 220 and configuring a backwashing system for desorbing the contaminants adsorbed on the filter medium 221. 300 is installed.

The backwashing unit 300 sprays compressed air on the contaminants adsorbed on the filter medium 221 to discharge the air, and the discharge space 410 when the driving of the air washing unit 330 and the air washing unit 330 are completed. It includes a water washing unit 340 for performing the second backwash while washing the filter medium (221) using the effluent stored in.

The air washing unit 330 and the water washing unit 340 are the upper mesh network 222 which is a position deviating from the range boundary line where the filter medium 221 is floated by an initial excellent rain or is moved downward after filtration is performed. It is installed on the outside of the lower mesh network 223 is configured to perform the initial excellent filtration by the easy floating of the filter medium (221).

Specifically, the air cleaning unit 330 is driven under the control of the central control unit 350, for example, is connected to the air generating device 230, such as a compressor or a blower, the air generating device As the compressed air of 230 is sprayed toward the filter medium 221 to remove the pollutants, the air spray pipe line includes an air spray nozzle 332 for spraying compressed air to the filter medium 221. .

The air cleaning unit 330 is configured under the filtration means 220 to inject compressed air toward the plurality of media 221 to allow desorption of contaminants by the injection pressure and at the same time the plurality of media 221 are rotated and collided with each other by the vortex phenomenon, and the desorption of contaminants is caused by the collision pressure generated at this time.

The water washing unit 340 is supplied through the third drain pump 420 driven under the control of the central control unit 350 when the first backwashing process of the filter medium 221 is completed by the air washing unit 330. The outflow water is sprayed to the backwash water through the nozzle to the filter medium 221 to remove secondary residual contaminants that cannot be removed.

When the water washing unit 340 is backwashed, the discharged water stored in the discharge space 410 is flowed back to the filtering means 220 to supply backwash water, so that the backwashing of the filter medium 221 is performed. The third drainage pump 420 configured at 410 is connected to the piping line is configured.

The discharge tank 400 is provided with a discharge space 410 communicating with the filtration space 210 and the effluent discharge passage 212 is stored only the effluent filtered by the filtration means 220, the stored effluent water When a certain amount or more, the discharge is made to the outside. Therefore, the discharge passage 412 is formed in the discharge space 410 to discharge the outflow. An obesity tube flowmeter 414 may be installed and operated at the inlet of the discharge passage 412.

The discharge tank 400 is configured to discharge the effluent stored in the discharge space 410, the third drain pump 420 to the reverse flow of the effluent when backwashing is configured. The third drain pump 420 is electrically connected to the central control unit 350 and the driving thereof is controlled to control whether or not the effluent water is supplied to the filtration means 220.

In addition, the discharge tank 400 is installed in the discharge space 410 detects the water level of the effluent during the backwashing process and transmits a signal to the central control unit 350 at a high level (H), so that the effluent is automatically flowed back. And a discharge level sensor 440 which transmits a signal to the central controller 350 to block backflow when the low level L is reached.

Therefore, according to an embodiment of the present invention, by improving the removal efficiency and backwashing effect of the contaminants through the non-point pollution reduction facility (1), water quality management is easy, and the flow control device 150 to cope with the load fluctuations It is easy to prevent abnormal operation and damage to facilities caused by excessive inflow of inflow.

On the other hand, the monitoring control measurement facility 3 according to an embodiment of the present invention is the first, second, third drain pump 170 according to the signal transmitted from the loss head sensor 120 and the discharge water level sensor 440 (171) 420, the central control unit 350 for controlling the driving of the air generating device 230 and the automatic valve 228 and the rainfall detecting unit for measuring the rainfall and transmitting the rainfall end signal to the central control unit 350 351.

That is, the backwash automation process of the non-point pollution abatement facility 1 is possible through the monitoring and control measurement facility 3, so that a non-resident of the manager to maintain it is possible.

Specifically, the backwash automation process, when the water level reaches the high level (H) of the loss head sensor 120, the loss head sensor 120 transmits a signal to the central control unit 350 The driving of the second drain pump 171 through the central controller 350 is performed. When the water level reaches the middle level M of the loss head sensor 120, the driving of the second drain pump 171 is stopped through the central controller 350 while driving the air generator 230. To remove the contaminants.

Here, the operation of the air generator 230 is operated only for a set time of, for example, 1 minute of a timer (Timer) of the central control unit 350, and when 1 minute has elapsed, the central control unit 350 generates air The driving of the apparatus 230 is stopped and the second drain pump 171 is driven to discharge the contaminated water.

In addition, when the water level reaches the low level (L) of the loss head sensor 120 in the driving process of the second drain pump 171, driving of the second drain pump 171 through the central control unit 350. To stop, and to drive the third drain pump 420 to supply the reverse washing water, when the water level reaches the middle level (M) of the discharge water level sensor 440, the discharge water level sensor 440 transmits a signal to the central control unit 350 to stop driving of the third drain pump 420 through the central control unit 350, and drives the second drain pump 171 to discharge the backwash water. You will proceed to the steps.

Finally, when the water level reaches the low level (L) of the loss head sensor 120, the loss head sensor 120 transmits a signal to the central control unit 350 to the first through the central control unit 350. 2 to stop the driving of the drain pump (171).

The central control unit 350 controls the driving of the air generator 230 and the third drain pump 420 by, for example, power line communication (PLC) to operate the air cleaner 330 and the water cleaner 340. By controlling the, the backwash automation process is performed at a predetermined time.

The central control unit 350 is installed in the maintenance floor (1a), which is a relatively upper floor of the non-point pollution reduction facility (1) composed of two-layer structure, or directly operated or telecommunication equipment disposed adjacent to the central control unit (350). It is possible to operate through smart linkage with the manager terminal represented by the smartphone through 352, it is maintained through the stairs or ladders formed in the maintenance layer (1a).

Here, the maintenance layer 1a is an independent space accessible through a doorway 1b exposed to the ground and a staircase or a ladder connected to the doorway 1b, and the monitoring control measuring facility 3 is located at one side of the space. The central control unit 350 to be configured is installed, the light fixture is installed on the inner ceiling in order to ensure management convenience and safety, and the ventilation facility 4 and the air supply facility 5 installed on the ground are connected.

That is, the monitoring control measuring facility 3 controls the pretreatment process, the filtration process, and the backwash automation process through the central control unit 350 installed in the maintenance layer 1a, for example, the discharge water level sensor 440. When a signal is transmitted from the inflow of the outflow water, the third drain pump 420 is driven to control the backwash water to be supplied to the water washing unit 340.

Here, the monitoring control measurement facility (3) is a problem of the decay and secondary pollution of the pollutants collected in the non-point pollution reduction facility (1), specifically, the pre-precipitation tank (100) and the filtration tank (200) during the rest period after the rainfall. In order to solve the problem, the non-point pollution reduction facility (1) will be automatically backwashed.

To this end, by installing a rainfall sensor 351 implemented by a rain sensor or a heat sensor at the upper land portion of the non-point pollution reduction facility 1 to measure rainfall, when the rainfall is terminated, the central control unit 350 receives a rainfall end signal. The first, second and third drain pumps 170, 171 and 420 and the air generating unit 230 within a set time set in the central control unit 350, for example, after 15 hours 48 hours. By controlling the driving of the automatic valve 228 to automatically proceed with the backwash automatic process.

In addition, according to the period until the next rainfall after the backwash automation process, that is, if the period between rainfall is longer, the manager checks the level of the discharge water level sensor 440 through the manager terminal to the middle level of the outflow water If the (M) degree is reached, the central control unit 350 may be operated to allow the further backwash automation process to proceed.

Therefore, according to one embodiment of the present invention, by automatically washing the inside of the non-point pollution abatement facility (1) during the rest period after the end of the rainfall to prepare for the next rainfall in a clean state, removal through the non-point pollution abatement facility (1) Improve efficiency, perform maintenance effectively, and prevent nonpoint pollutants from entering the watershed.

Although the present invention has been described in detail through one embodiment, this is to explain the present invention in detail, and the backwash automatic non-point pollution reduction system using the variable driving chamber filtration according to the present invention is not limited thereto. The terms "comprise", "comprise", or "have" described above mean that a corresponding component may be included unless specifically stated otherwise, and thus, excluding other components is excluded. Rather, it should be construed that it may further include other components, all terms including technical or scientific terms are to be generally understood by one of ordinary skill in the art unless otherwise defined Has the same meaning as

In addition, the above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the one embodiment. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: non-point pollution reduction facility 1a: maintenance floor
1b: Entrance 3: Surveillance Control Instrument
4: ventilation facility 5: air supply facility
100: pretreatment tank 102: guided overflow portion
104: inlet pipe 105: discharge pipe
110: storage space 110a: installation groove
112: first storage tank 114: second storage tank
115: upper drainage passage 116: partition bulkhead
118: lower feed passage 120: lost head detection sensor
130: rectification screen 150: non-powered flow control device
151: horizontal supply piping 151a: flange connection
152: valve unit 153: valve plate
154: central axis 155: connecting axis
156: buoyant body 170: the first drain pump
171: second drain pump 200: filtration tank
210: filtration space 212: effluent discharge passage
220: filtering means 221: filter medium
222: upper mesh network 223: lower mesh network
224: driving chamber 225: induction valve
226: guide rail 227: air outlet pipe
228: automatic valve 230: air generator
300: backwash processing unit 330: air cleaning unit
332: air spray nozzle 340: water washing unit
350: central control unit 351: rainfall detection unit
352: telecommunications equipment 400: discharge tank
410: discharge space 412: discharge passage
420: third drain pump 440: discharge level sensor

Claims (7)

A non-point pollution abatement facility for filtering and discharging the initial rainwater that has not flown over the induced overflow portion during the rainfall and a monitoring control measurement facility for monitoring and controlling the nonpoint pollution abatement facility;
Including;
In the non-point pollution reduction facility, first and second storage tanks having a storage space in which initial rainwater flows in the rain, are partitioned through partition partitions standing up in the storage space, and initial rainwater flowing into the first storage tank. Rectifier screen installed in the first storage tank to separate the suspended matter in the non-power flow rate control device consisting of a ball top valve is installed on the upper part of the partition bulkhead to block the inflow by no power according to the initial excellent water level and the first, second A pretreatment tank each installed at the bottom of the storage tank and including first and second drain pumps for discharging sludge and backwash water to the sewage pipe;
The pre-treatment tank is provided with a filtration space is introduced into the initial excellent flow upflow type, the lower mesh network is fixed to the lower portion of the filtration space, the foamed media constituting the media layer between the lower mesh network is accommodated A hemispherical driving chamber is installed on the upper part of the upper mesh network which can be elevated in the upper part of the filtration space so as to secure the upper and lower flow spaces, and the upper side of each corner of the upper mesh network prevents the upper mesh network from tilting and Induction valve is installed to move to the guide rail, the guide rail for guiding the lifting of the guide rail is installed on the wall of the filtration space is compressed by the media layer through the weight of the integral structure to reduce the contaminants in the state of reducing the voids between the media Filtration tank to filter;
The discharge space communicating with the filtration space is provided to store the filtered effluent, and a discharge passage is formed to discharge to the outside according to the water level thereof. The discharge passage is installed in the discharge space to counter-flow the effluent to backwash water in the filtration space. A discharge tank including a third drain pump to supply and a discharge water level sensor installed in the discharge space; And
It is connected to the third drain pump is configured in the water washing unit and the lower portion of the filtration space to inject the backwash water in the upper portion of the filter medium to spray the compressed air supplied through the air generating device to the filter chamber to collect Thereby raising the unitary structure, and the backing layer comprises an air washing unit configured to expand and relax to allow variable filtration;
Including,
The monitoring control measuring facility controls the driving of the first, second and third drain pumps and the air generating device according to the signal transmitted through the loss head sensor installed in the pretreatment tank and proceeds with the backwash automation process. A central control unit for controlling the driving of the third drain pump according to a signal transmitted through the second pump to block the reverse flow of the effluent; And
Installed in the upper land portion of the non-point pollution abatement facility to measure rainfall, and at the end of the rainfall, the rainfall end signal is transmitted to the central control unit so that the central control unit controls the driving of the first, second and third drainage pumps and the air generator to finish the rainfall. Rainfall detection unit for the backwash automation process is performed during the rest period;
Backwash automation non-point pollution reduction system using a drive chamber variable filtration method comprising a.
The method according to claim 1,
The non-point pollution abatement facility is composed of a two-layer structure buried underground, the pretreatment tank, the filtration tank and the discharge tank is arranged on the lower floor, the central control unit is installed on the upper floor accessible through the entrance exposed to the ground, the upper rainfall Backwash automation non-point pollution reduction system using a drive chamber variable filtration method characterized in that the sensing unit is installed.
The method according to claim 1,
The first and second drain pumps are installed in recesses formed in the bottom of the storage space so that the settling sludge is gathered in one place, and the settling sludge is discharged into the sewage pipes. Automated Nonpoint Pollution Reduction System.
The method according to claim 1,
The backwashing automation process may include: driving the second drain pump through the central control unit by transmitting a signal to the central control unit when the water level reaches a high level of the lost head detection sensor;
When the water level reaches the middle level of the loss head sensor, stopping the driving of the second drain pump through the central controller, and driving the air generator during the set time of the timer of the central controller to remove the pollutant;
Discharging the polluted water by stopping the driving of the air generator by the central controller and driving the second drainage pump after the set time elapses;
Stopping the driving of the second drain pump through a central controller and supplying the backwash water by driving the third drain pump when the water level reaches the low level of the loss head sensor in the driving process of the second drain pump;
When the water level reaches the middle level of the discharge level sensor, the discharge level sensor sends a signal to the central control unit to stop driving of the third drain pump through the central control unit, and drives the second drain pump to backwash water. Discharging it; And
When the water level reaches the low level of the head loss sensor, the loss head sensor sends a signal to the central control unit to stop the driving of the second drain pump through the central control unit, characterized in that the drive chamber Automated backwash pollution reduction system using variable filtration method.
The method according to claim 1,
The filtration tank is installed in the upper portion of the drive chamber is an automatic valve connected to the central control unit to automatically open and close the air outlet pipe and the air outlet pipe for discharging the air collected by the drive chamber;
Backwash automation non-point pollution reduction system using a drive chamber variable filtration method further comprising.
The method according to claim 5,
The central control unit controls the driving of the first, second, and third drain pumps, the air generating device, and the automatic valve within 48 hours after the rainfall end signal is transmitted from the rainfall detecting unit, thereby performing a backwash automation process. A backwash automated non-point pollution reduction system using a drive chamber variable filtration method, which prevents corruption and secondary pollution of contaminants remaining in the abatement facility.
The method according to claim 6,
After the backwash automation process, the manager checks the water level of the effluent through the manager terminal according to the period until the next rainfall, and operates the central control unit to perform an additional backwash automation process. Automated backwash pollution reduction system.

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