KR102287720B1 - High-efficiency non-point pollution reduction facility that is easy to maintain - Google Patents

Abstract

The present invention relates to a non-point pollution reduction facility including a pretreatment tank (100), a filtration tank (200), a drain tank (300), and a backwashing unit (400). The present invention relates to a high-efficiency non-point pollution reduction facility that is easy to maintain, comprising: a first filter media unit (220) provided in the filtration tank (200) and accommodating eco-friendly media to purify contaminated raw water; and a second filter media unit (230) that is provided at a location spaced a predetermined distance from the outlet side of the upper end of the first filter media unit (220), and performs secondary purification on the primarily purified raw water.

Description

High-efficiency non-point pollution reduction facility that is easy to maintain

The present invention relates to a high-efficiency non-point pollution reduction facility that is easy to maintain.

The present invention relates to a high-efficiency non-point pollution reduction facility that is easy to maintain.

In general, the initial raw water (5mm of precipitation that falls initially) flows through the ground surface and sewer pipes, and is spread over a wide range of surfaces such as roads, farmland, parking lots, industrial complexes, commercial areas, residential areas, bridges, construction sites, and yards. It contains high concentrations of non-point pollutants such as accumulated silt, oil, contaminants, heavy metals, pathogenic microorganisms, organic compounds, radioactive materials, livestock excreta, and untreated livestock wastewater, which flow into the river as it is. and destroying it, causing serious problems.

Accordingly, in recent years, as the degree of pollution by non-point pollutants has been confirmed as various indicators, the treatment of non-point pollutants is emerging as an important environmental problem. Devices and facilities (non-point pollution abatement facilities) have been proposed.

However, the conventional non-point pollution reduction facility has the following problems.

First, the conventional non-point pollutant reduction facility has a problem in that it is structurally weak in strength because a mesh screen is used, and the pores are clogged by floating substances and garbage.

Second, in the conventional non-point pollutant reduction facility, the flow of contaminated raw water is deflected to one side, and the adsorption efficiency of the filter media is not constant, which has a problem of shortening the replacement cycle of the filter media. That is, there was a problem that the efficiency of the filter media was not constant because it could not provide the flow of raw water over the entire area.

Third, when a plurality of stacked eco-friendly ceramic filter media is used, it does not have antibacterial performance, so there is a problem in that bacteria and bacteria remain between the filter media.

Fourth, when an eco-friendly ceramic filter material is used, the pretreatment process is not performed, causing collisions and abrasion between the filter materials, which causes a decrease in filtration efficiency.

Fifth, when an eco-friendly fibrous filter medium is used, even when backwashing water is sprayed, the microcontaminants cannot be completely removed from the fibrous filter medium, so the adsorption efficiency of the filter material is sharply decreased, and there is a problem that the replacement cycle is very short. Even though it was approaching, it was not easy to replace the case containing the fibrous media, so the entire case had to be replaced. That is, there was a problem in that the inconvenience of maintenance increases.

[Prior Document 1] Korean Patent Publication No. 10-1935498 (2018.05.29.) [Prior Document 2] Korean Patent Publication No. 10-1294338 (2012.05.09.) [Prior Document 3] Korean Patent Publication No. 10-2203152 (2020.09.03.)

An object of the present invention is to provide a high-efficiency non-point pollution reduction facility that is easy to maintain, in which the granular fiber filter media that has absorbed contaminants contained in wastewater can be easily replaced with a new one.

The present invention is a non-point pollution reduction facility including a pretreatment tank 100, a filtration tank 200, a drain tank 300, and a backwashing unit 400, provided in the filtration tank 200, and an eco-friendly filter medium is accommodated. , a first filter media unit 220 to purify the contaminated raw water; A second filter media unit 230 provided at a location spaced a predetermined distance from the outlet side of the upper end of the first filter media unit 220 and formed in a predetermined shape to secondary purify the primary purified raw water; It is characterized in that it comprises.

The second filter unit 230 has a plurality of through-holes formed therein, the bending case 231 having a storage space therein; and a plurality of granular fiber filter media 232 built in the storage space of the bending case 231; It is characterized in that it comprises a.

The bent case 231 includes an opening 231a that is opened by a hinge; It is characterized in that it is configured to include; a bent portion (231b) coupled to the upper and lower sides of the opening portion so that the bent case (231) has a “b” shape.

The bent portion 231b is characterized in that the inclined surface 231b-1 inclined toward the upper side is formed on one side.

The bent portion 231b is characterized in that a support jaw 231b-2 for supporting the upper side of the opening portion 231a is formed at a position spaced a predetermined distance downward from the upper end.

An inlet is further formed on the upper surface of the opening 231a.

The granular fiber filter media 232 is characterized in that graphene oxide is coated.

The granular fiber filter media 232 has a density of 0.20 to 0.60 g/cm 3 , and a pore size of 2.0 to 160 μm.

A screen 120 is installed on the upper side of the side wall of the pretreatment tank 100, and the screen 120 includes a sieve 121 that forms an outer surface and a rib 122 provided on the inner surface of the sieve 121. characterized in that it is composed.

The present invention has the effect of providing a high-efficiency non-point pollution reduction facility that is easy to maintain, in which the granular fiber filter media that has absorbed the contaminants contained in the wastewater can be easily replaced with a new one.

In addition, the present invention provides a high-efficiency, easy-to-maintain, non-point pollution reduction facility that reinforces the strength of the screen, prevents the screen from collided with floating foreign substances and is damaged, and prevents clogging of pores by the floating foreign substances. effect that can be provided.

” 형상을 갖는 단턱부를 나타낸 것이다.
도 7은 본 발명의 또 다른 실시예에 의한 유지보수가 용이한 고효율 비점오염저감시설의 사시도를 나타낸 것이다.
도 8은 본 발명의 또 다른 실시예에 의한 유지보수가 용이한 고효율 비점오염저감시설의 단면도를 나타낸 것이다.
도 9는 본 발명의 또 다른 실시예에 의한 유지보수가 용이한 고효율 비점오염저감시설에 있어서, 대공프레임부를 나타낸 것이다.1 is a perspective view of a high-efficiency non-point pollution reduction facility that is easy to maintain and maintain according to the present invention.
2 is a cross-sectional view of a high-efficiency non-point pollution reduction facility that is easy to maintain and maintain according to the present invention.
3 shows a screen of a high-efficiency non-point pollution reduction facility that is easy to maintain according to the present invention.
4 shows the second filter media unit of the high-efficiency non-point pollution reduction facility, which is easy to maintain and maintain according to the present invention.
Figure 5a shows a state in which one side of the second filter media unit is opened in the high-efficiency non-point pollution reduction facility that is easy to maintain and maintain according to the present invention.
Figure 5b shows a state in which the granular fiber filter media is discharged by pressing one side of the bent part and rotating it at a predetermined angle in the easy-maintenance and high-efficiency non-point pollution reduction facility of the present invention.
6 shows “

” It shows a stepped part having a shape.
7 is a perspective view of a high-efficiency non-point pollution reduction facility with easy maintenance according to another embodiment of the present invention.
8 is a cross-sectional view of a high-efficiency non-point pollution reduction facility that is easy to maintain according to another embodiment of the present invention.
9 shows an anti-aircraft frame part in a high-efficiency non-point pollution reduction facility that is easy to maintain according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-described problems to be solved can be specifically realized will be described with reference to the accompanying drawings.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, it should be understood that since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred examples of the present invention, there may be various equivalents and modifications that can be substituted for them at the time of the present application. .

In addition, in describing the present embodiments, the same names and the same reference numerals are used for the same components, and an additional description thereof will be omitted below.

1 to 2, the present invention provides a high-efficiency non-point pollution reduction facility that is easy to maintain and includes a pretreatment tank 100, a filtration tank 200, a drain tank 300, and a backwashing unit 400. include

The pretreatment tank 100 and the filtration tank 200 are partitioned by the first partition wall 500 having an open lower side wall, and the raw water supplied from the raw water inlet pipe 110 flows into the pretreatment tank 100 . Thereafter, the raw water supplied from the pretreatment tank 100 is supplied to the filtration tank 200 , and the filtration tank 200 and the drain tank 300 are partitioned by the second partition wall 700 , and supplied from the filtration tank 200 . It has a structure in which raw water from which pollutants have been removed can be supplied to the drainage tank 300 .

The pretreatment tank 100 is formed to have a space of a certain size therein, and on the upper side of one side wall of the pretreatment tank 100, the raw water inlet pipe 110 through which raw water flows in and the floating substances having relatively large particles in the raw water are removed. A screen 120 is installed.

In this case, the screen 120 may be manufactured in a cylindrical shape (not shown) and a rectangular box shape (see FIGS. 1 and 3 ), and the screen 120 has a structure in which an upper part can be opened and closed for easy maintenance. (See FIG. 3).

Meanwhile, as shown in FIG. 3 , in order to reinforce the strength of the screen 120 , the screen 120 may be made of a sieve 121 and a rib 122 provided on the inner surface of the sieve 121 . there is. That is, the sieve 121 may form an outer wall of the screen 120 , and the rib 122 may be configured in a double wall shape to form an inner wall of the screen 120 . Since the overall strength is reinforced by the ribs 122, it is possible to prevent the sieve 121 from being damaged by the floating foreign substances as in the prior art, and the floating foreign substances are spread over the ribs, so that the air gap of the sieve 121 is This has the effect of not being blocked. That is, there is an effect of reinforcing the strength of the screen 120 and preventing clogging by floating foreign substances.

Preferably, the rib 122 may be made of metal or non-ferrous metal or FRP having excellent corrosion resistance and durability, and the sieve 121 may be made of metal or non-ferrous metal having excellent durability and corrosion resistance.

Meanwhile, as shown in FIGS. 1 to 2 , a first pump 130 may be further provided at the bottom of the pretreatment tank 100 . The first pump 130 may be configured to be provided with a level switch that detects the water level in the pretreatment tank 100 in real time and operates the pump according to the output of the detection signal. The first pump 130 stops the operation when the low water level detection signal is output from the level switch, and starts operation when the high level detection signal is output, so that raw water or backwash water can be discharged and discharged through the discharge pipe 140 . do.

Hereinafter, the filtration tank 200 of the present invention will be described.

1 to 2 , in the case of the filtration tank 200 , it is installed at the rear end of the pretreatment tank 100 , and the pretreatment tank 100 and the filtration tank 200 are connected by a first partition wall 500 . are separated

The first partition wall 500 has a structure in which the lower one side is opened, so that raw water from which floating foreign substances are removed from the pretreatment tank 100 can be supplied to the filtration tank 200 .

A spray unit for selectively spraying backwashing water and air is installed on the upper portion of the filtration tank 200, and bubbles are generated by air in the lower portion of the filtering tank 200 to remove the contaminants adsorbed on the first filter media unit 220. It is possible to configure an air diffuser (not shown) for desorption. According to a person skilled in the art, it is obvious that spray units are installed in the upper and lower portions of the filtration tank 200, respectively, and can be configured to be backwashed.

The filtration tank 200 includes a first filter media unit 220 for purifying the contaminated raw water by receiving the eco-friendly media; A second filter media unit 230 provided at a location spaced a predetermined distance from the outlet side of the upper end of the first filter media unit 220 and formed in a predetermined shape to secondary purify the primary purified raw water; It is characterized in that it comprises.

The first filter media unit 220 includes an eco-friendly ceramic filter including sand, gravel, garnet, charcoal, activated carbon, zeolite, igneous rock, elvan, garnet, ocher ball, kaolin ball, etc. to remove contaminants contained in raw water. It is preferable to configure it so that it can be easily adsorbed.

The raw water purified by the first filter media unit 220 flows into the second filter media unit 230 .

1 to 2 , the second filter media unit 230 is provided at a location spaced apart from the upper side of the first filter media unit 220 by a predetermined distance. The second filter media unit 230 is for finally adsorbing foreign substances and impurities contained in the raw water.

More specifically, as shown in FIGS. 1 to 3, the second filter media unit 230 has a plurality of through-holes formed therein, and a bending case 231 having a storage space therein; and the bending case 231 It may be configured to include; a plurality of granular fiber media 232 built into the storage space of

In addition, the second filter media unit 230 may further include an anchor bolt part 233 .

The second filter media unit 230 has anchor bolt parts 233 fastened to both sides, and fixedly inserting the anchor bolt parts 233 into the inner wall of the non-point pollution reduction facility, so that the second filter media unit 230 is “b”. ” can be installed.

According to the method, the second filter media unit 230 forms a rotation shaft in the bending case 231, and then both sides of the rotation shaft are inserted and fixed to the inner wall of the non-point pollution reduction facility, so that the second filter media unit 230 ) can be configured to be installed in the non-point pollution reduction facility.

Since the second filter media unit 230 is installed at one outlet side of the filtration tank 200, it is possible to further increase the adsorption efficiency of foreign substances and impurities contained in the raw water.

As shown in FIG. 4 , the bent case 231 includes an opening 231a that is opened by a hinge; It is coupled to the upper and lower sides of the opening portion, and the bent case 231 is configured to include a bent portion 231b to have a “b” shape.

More specifically, the bent case 231 is provided with an open portion 231a and a hinge portion 231c connected to the bent portion 231b.

That is, in the bent case 231 , the opening part 231a is hinged to one side by the hinge part 231c, so that the user can easily exchange the granular fiber filter media 232 .

In addition, since the bending case 231 has a “b” shape, the filter media is filled not only horizontally but also vertically, so that the surface area in contact with contaminants is wider than that of the existing horizontally filled filter media, and the residence time is also Longer, it is possible to implement the maximum filter efficiency with the minimum granular fiber media 232 .

On the other hand, as shown in FIG. 5A, the bent portion 231b has a support jaw 231b-2 for supporting the upper side of the open portion 231a at a position spaced a predetermined distance downward from the upper end thereof. do.

An upper end of the bent portion 231b is bolted to an upper end protruding in the vertical direction of the open portion 231a. At this time, the support jaw 231b-2 is formed to protrude from the bent portion 231b, so that the support jaw 231b-2 stably supports the open portion 231a. In addition, since the opening portion 231a is stably seated on the support jaw 231b-2, the user arranges bolt fastening holes provided in each of the opening portion 231a and the bent portion 231b for bolting side by side. It has the advantage of being able to omit the process that needs to be done.

” 형상으로 형성될 수 있을 뿐만 아니라, 도 6에 도시된 바와 같이, “

”형상으로도 형성될 수 있도록 하여, 개방부(231a)의 상측을 더욱 안정적으로 지지할 수 있다.5A to 5B, the support jaw 231b is “

As well as being formed in the shape of ", as shown in FIG. 6, "

By being formed in a “shape, it is possible to more stably support the upper side of the opening 231a.

As shown in FIG. 5B , the bent portion 231b is characterized in that an inclined surface 231b-1 inclined toward the upper side is formed on one side.

By forming the inclined surface 231b - 1 , the user can press one side of the bent case 231 upward to easily discharge the granular fiber filter media 232 .

On the other hand, in order to conveniently inject the granular fiber filter media 232 into the inside of the bending case 231, an inlet (not shown) may be formed on the upper surface of the opening 231a. The user may inject the granular fiber filter media 232 into the inlet (not shown) in a state in which the open part 231a and the bent part 231b are coupled. In addition, according to those skilled in the art, the inlet (not shown) may be configured as a sliding type.

On the other hand, the granular fiber filter media 232 may be used as a main material as long as it is a fiber or a polymer that can be molded into a sheet, and any one or more selected from the group consisting of a polyethylene-based polymer material and a polypropylene-based polymer material. It may be a mixture or a copolymer. In this case, it is preferable to use a polyethylene-based polymer material in consideration of the filtration and cleaning efficiency of non-point contamination sources, thermoforming processability, etc., and specifically, low-density polyethylene (LDPE), linear low-density polyethylene (Linear low-density polyethylene) , LLDPE) and high-density polyethylene (HDPE). In particular, when the granular fiber media 232 is made of a polyethylene-based polymer material, mutual friction between a plurality of granular fiber media is well made to optimize filtration efficiency and cleaning efficiency, and because the fiber media is hydrophobic, It can maximize filtration efficiency and washing efficiency, and as a buoyancy-increasing flotation media with a lower density than water, it is possible to minimize the effect of water during backwashing.

More preferably, the granular fiber filter media 232 may have a density of 0.20 to 0.60 g/cm 3 , and the size of the capillary and three-dimensional pores resulting therefrom may be 2.0 to 160 μm.

If the density is 1.0 g/cm3 or less, voids exist in the ball-shaped fiber media, and the larger the density, the smaller the voids are. That is, the higher the density, the smaller the contaminants can be filtered.

The granular fiber filter media 232 may be coated with graphene oxide. More preferably, after swelling the granular fibrous filter media 232, the swollen granular fibrous media 232 is immersed in a polar aprotic solvent in which graphene oxide (GO) is dispersed, and graphene is added to the swollen fibrous media. It is preferred to coat the oxide (GO). More preferably, the granular fiber filter media 232 is immersed in a xylene solution and swollen, and then the granular fiber filter media 232 swollen in N,N-dimethylformamide (DMF) in which graphene oxide (GO) is dispersed. By immersion, graphene oxide (GO) is coated on the swollen fiber media.

The swelling of the granular fiber filter media 232 is to maximize the coating of the graphene oxide (GO) by widening the intermolecular spacing of the granular fibers. That is, by swelling the granular fiber filter media 232 , the fiber tissue is relaxed, and graphene oxide (GO) easily penetrates into the space secured by the relaxation of the fiber tissue, so that it can be coated.

Hereinafter, the backwashing unit 400 will be described in detail.

As shown in FIG. 2 , the backwashing unit 400 includes a filtered water supply unit 410 for supplying the filtered filtered water of the drain tank 300 ; an air supply unit 420 for supplying air; and a solenoid valve unit 430 formed at the connection between the filtered water supply unit 410 and the air supply unit 420 to control the flow rates of filtered water and air; It may be configured to include a; it is connected to the solenoid valve unit 430, the injection unit 440 for injecting the fluid of which the flow rate is adjusted to the filtration tank (200).

More specifically, the filtered water supply unit 410 that draws out the filtered water of the drain tank 300 and supplies it to the filtering tank 200 includes a second pump 411 and a filtered water supply pipe 412 for draining the filtered water for backwashing. may be configured to include, and the air supply unit 420 may be configured to include a compressor 421 and an air supply pipe 422 .

The second pump 411 may be configured to be provided with a level switch that detects the water level in the drain tank 300 in real time and operates the pump according to the output of the detection signal. The second pump 411 may be configured to end backwashing when a low water level detection signal is output from the level switch, and to start operation when a high level detection signal is output.

It is preferable that the solenoid valve part 430 is provided in the connection part of the filtered water supply pipe 412 and the air supply pipe 422 . In this case, the solenoid valve used in the solenoid valve unit 430 may be a waterproof DC solenoid valve. The solenoid valve unit 430 can adjust the flow rates of filtered water and air according to the control signal of the control unit 800 , thereby making it easier to manage the filtering tank 200 . For example, when it is desired to dry the filtration tank 200 , the solenoid valve unit 430 blocks the supply of filtered water and supplies only air to increase drying efficiency.

In addition, when it is desired to remove the contaminants adsorbed to the filtration tank 200, the air supply is blocked and only filtered water is supplied, or air and filtered water are supplied at the same time so that the contaminants are more easily removed by bubbles. It can be configured to be

On the other hand, the injection unit 440 is connected to the solenoid valve part 430, and is provided in a plurality of branch pipes 441 and the plurality of branch pipes 441 introduced into the filtration tank 200, between filtered water and air. It may be configured to include a spray nozzle 442 for spraying at least any one or more.

At this time, the injection unit 440 is a first injection unit (not shown) provided at the upper end of the filtration tank 200; A second injection unit (not shown) provided in the lower portion of the filtration tank 200; may be configured to include. This can be done by supplying air to the filtration tank 200 to dry it so that bacteria do not propagate, and by generating bubbles by air to desorb contaminants adsorbed on the first filter media unit 220 and the second filter media unit 230 . , it has the effect of extending the filter efficiency and lifespan.

The high-efficiency non-point pollution reduction facility that is easy to maintain according to the present invention may further include a control unit 800 for controlling the backwashing unit 400 .

The control unit 800 checks the water level value measured by the level switch, the integration timer (TMR) and the water level sensor, and based on this value, the second pump 411, the compressor 412, the solenoid valve unit 430. By sending an electronic control signal, its operation and opening/closing operation can be turned on/off and controlled.

In particular, the control unit 800 may output a control signal to the solenoid valve unit 430 so that at least one of filtered water and air may be supplied to the injection unit 440 .

The control unit 800 performs automatic backwashing when the end of the rain is determined by a rain sensor that can be installed outside, and when the rain continues, collects the water level data of the pretreatment tank 100, It can be configured to determine whether the opening/closing part provided in the entrance pipe 110 is opened or closed.

In addition, the control unit 800 may be configured to perform backwashing when the water level inside the drain tank 300 is higher than or equal to a set value, and to terminate backwashing when the water level is lower than or equal to a set value.

In addition, when the water level inside the pretreatment tank 100 is greater than or equal to a set value, the control unit 800 terminates backwashing and operates the drain pump 130 to discharge rainwater from the inside of the pretreatment tank 100 to the discharge pipe 140 . can do.

7 to 8 show a high-efficiency non-point pollution reduction facility that is easy to maintain and maintain according to another embodiment of the present invention. An anti-aircraft frame part 210 is further installed in the lower portion of the filtration tank 200, and the first ceramic filter unit 221; a second ceramic filter unit 222; It shows the first filter media unit 220 including the graphene filter unit 223 .

More specifically, a high-efficiency non-point pollution reduction facility, which is easy to maintain according to another embodiment of the present invention, is provided in the lower part of the filtration tank 200 , and the raw water supplied from the pre-treatment tank 100 is removed from the filtration tank 200 . Anti-air frame portion 210 to be supplied to the entire upper portion; A first filter media unit 220 provided on the upper part of the anti-aircraft frame part 210, the eco-friendly media is accommodated, and purifies the contaminated raw water; A second filter media unit 230 provided at a location spaced a predetermined distance from the upper side of the first filter media unit 220 to secondary purify the raw water that has been subjected to the primary purification process; may be configured to include.

First, as shown in FIGS. 7 to 9 , in the case of the anti-air frame 210, the first filter media unit 220 It can help extend the lifespan and backwash cycle. In addition, it is possible to improve the filter efficiency of the first filter media unit 220 by configuring so that raw water can be efficiently introduced into the entire upper area of the filtration tank 200 .

More specifically, as shown in Fig. 9, the anti-air frame 210 has a plurality of communication holes (211b) formed, the upper plate 211 through which the raw water supplied from the pretreatment tank 100 passes; and a lower swash plate 212 inclined in an upward direction, and a plurality of connecting rods 213 connecting the upper plate 211 and the lower swash plate 212 .

In the case of the upper plate 211, a plurality of communication holes 211b are formed, so that foreign substances having large particles in the raw water supplied from the pretreatment tank 100 can be removed secondarily.

In addition, in the case of the lower swash plate 212, by being inclined upwardly, the flow rate of the incoming raw water increases from the front to the rear of the lower swash plate 212, so that the first filter media unit 220 The raw water can flow evenly from the front and rear. That is, the flow rate of the raw water passing through the lower swash plate 212 is improved, and the raw water is introduced into the first filter media unit 220 without deviation, which has the effect of improving the efficiency of the filter.

A flow guide piece 211b for guiding and supplying the raw water supplied from the pretreatment tank 100 may be further formed at the bottom of the upper plate 211a. This is to transmit the flow of raw water flowing in through the pretreatment tank 100 in the lateral direction as well as in the straight direction, so that the raw water having an increased flow rate can be delivered to the entire upper part.

That is, by dividing the flow area of the raw water by the flow guide piece 211b, it is not deflected to one side, and it is possible to provide the flow of the raw water over the entire area, as well as provide the effect of additionally increasing the flow rate. In addition, there is an effect of remarkably improving the filter efficiency of the first filter media unit 220 in contact with the raw water in the process of flowing raw water with an increased flow rate in all directions to the upper portion of the filtration tank 200 .

When the anti-air frame 210 is provided, the above-mentioned second injection unit (not shown) may be provided between the upper plate 211 and the lower swash plate 212, and more preferably, a flow guide piece ( It is preferable to be provided in the lower part of 211b).

On the other hand, the first filter media unit 220 receives the raw water with improved flow rate and flow by the anti-air frame 210 and primarily purifies the contaminated raw water.

7 to 8, the first filter media unit 220 of a high-efficiency non-point pollution reduction facility that is easy to maintain according to another embodiment of the present invention includes a first ceramic filter unit 221; a second ceramic filter unit 222; Graphene filter unit 223; may be composed of an eco-friendly filter material including.

Depending on the method, the first filter media unit 220 may further include a pre-treatment filter (not shown). In this case, the pre-treatment filter (not shown) is preferably provided between the anti-air frame 210 and the first ceramic filter unit 221 .

The pretreatment filter (not shown) may be made of a porous synthetic fiber material such as polyurethane foam, polyvinyl acetal foam, polystyrene foam, or polyethylene foam. In the case of the pre-treatment filter (not shown), it is possible to assist the purification function of raw water. More specifically, the pre-treatment filter is made of a fibrous material that is easy to exchange, and by trapping foreign substances with a large diameter contained in raw water by a porous structure in advance, the entire lifespan of the first filter media unit 220 and the backwashing cycle are reduced. to support extension.

In addition, in the pre-treatment filter, 3 or more types of bacillus natto, aspergillus oryzae, aspergillus niger, yeast, lactobacillus rhamnosus, nitrobacter can be accumulated. This is to reduce odor-causing substances contained in raw water and to purify pollutants such as radon and harmful bacteria contained in the filtration tank 200 .

At this time, when the thickness of the pre-treatment filter is less than 3 cm, there is a fear that the ability to capture the initial particles contained in the incoming sewage may be reduced, and if it exceeds 20 cm, there is a problem that the flow rate of the transmitted sewage may be lowered. .

The first ceramic filter unit 221 may be stacked on the upper portion of the anti-air frame 210 to the upper portion of the pre-treatment filter (not shown), and the first ceramic filter unit 221 includes sand, gravel, garnet, charcoal. , activated carbon, zeolite, igneous rock, elvan, garnet, ocher ball, kaolin ball, may be at least one selected from the group consisting of ion exchange resin.

More specifically, the first ceramic filter unit 221 uses an inorganic material having an excellent function of adsorbing contaminants aggregated in contaminated raw water. A thing with a diameter of 0.5-30 mm can be used so that it does not.

Since the first ceramic filter unit 221 is provided, it is possible to adsorb turbidity and chromaticity-inducing substances contained in raw water, and the function of deodorizing odors becomes excellent. In particular, it can effectively adsorb free chlorine, trihalomethanes, volatile organic compounds (VOCs) such as chloroform, lead, etc., and also remove amine odors and methyl mercaptan.

Meanwhile, the second ceramic filter unit 222 is a filter impregnated with calcined shell powder, which can remove contaminants from raw water, remove odors, and perform antibacterial functions. The shell is a hard shell of shellfish, and includes, but is not limited to, shells such as petrified clams, clams, mussels, abalone, conch, ramie, clams, viburnum, scallops, and clams. The shell may be discarded after culture or collection of shellfish, and the present invention is environmentally friendly in that shell meal with high activity is manufactured by using the discarded shell.

The calcined shell powder is removed from organic matter; porous step; stabilization step; Including a heating step; more specifically, in the organic matter removal step, the fired shell powder removes the organic component present in the crushed shell material to prepare a shell product, and the organic component is an inactive organic material adherent include those In addition, the porous step is to obtain a porous shell pulverized product by treating the processed shell material with an acid, and may be one using an inorganic acid. Meanwhile, in the stabilization step, the pulverized porous shell material is treated with a base to obtain a stabilized pulverized porous shell material. Thereafter, a heat treatment step of heat-treating the stabilized pulverized porous shell material at a temperature of 300 to 900° C. to obtain shell powder; through which the crystal structure of the pulverized porous shell material becomes harder.

The particle surface of the calcined shell powder prepared by the above method is activated to have nanopores, thereby exhibiting remarkable adsorption power of contaminants.

That is, since the filter impregnated with the calcined shell powder is applied to the second ceramic filter part 222, the specific surface area is high due to the porous structure of the fired shell powder, so that the adsorption effect of heavy metals in raw water is raw water, and the shell Environmental pollution can be reduced because it is manufactured using In addition, antibacterial properties are provided by high-temperature firing, so that after purification of raw water, the overall lifespan of the first filter media unit 220 and the backwash cycle can be extended.

Meanwhile, the graphene filter unit 223 includes a plurality of reduced graphene oxide sheets.

More preferably, the reduced graphene oxide sheet may be prepared by peroxidizing graphite to obtain graphene oxide, and reducing the obtained graphene oxide, but may not be limited thereto.

In the process of peroxidation of the graphite, oxygen-containing functional groups are generated at the edge of graphene and inside the graphene, and defects may be generated among them, thereby creating a pinhole. Accordingly, each of the plurality of reduced graphene oxide sheets may include at least one of the oxygen-containing functional group and the pinhole, but may not be limited thereto.

In this case, the oxygen-containing functional group may include one selected from the group consisting of a hydroxyl group, an epoxy group, a carboxyl group, a ketone group, and combinations thereof.

By forming the graphene filter unit 223 including a plurality of reduced graphene oxide sheets, the organic material contained in the raw water can be adsorbed to the oxygen-containing functional group and filtered, and the impurities contained in the raw water are inside the graphene. It may be removed by being sandwiched between the pinholes formed in the , or it may be removed by being sandwiched between the graphene sheet and the sheet. Accordingly, the graphene filter unit 223 can adsorb and remove even the contamination source of ultra-fine particles.

Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that you can.

100: pretreatment tank
110: raw water inlet pipe
120: screen
121: strainer
122: rib
130: first pump
140: discharge pipe
200: filter tank
210: anti-aircraft frame unit
211: top plate
211a: flow guide piece
211b: communication hole
212: lower swash plate
213: connecting rod
220: first filter media unit
221: first ceramic filter unit
222: second ceramic filter unit
223: graphene filter unit
230: second filter media unit
231: bending case
231a: opening
231b: bend
231b-1: slope
232: granular fiber media
300: sump
400: back washing unit
410: filtered water supply unit
411: backwash pump
412: filtered water supply pipe
420: air supply
421: compressor
422: air supply pipe
430: solenoid valve part
440: injection unit
500: first bulkhead
700: second bulkhead
800: control unit

Claims (9)

In a non-point pollution reduction facility comprising a pretreatment tank 100, a filtration tank 200, a drain tank 300, and a backwashing unit 400,
a first filter media unit 220 provided in the filtration tank 200, in which an eco-friendly filter media is accommodated, to purify the contaminated raw water;
A second filter media unit 230 provided at a location spaced apart from the outlet side of the upper end of the first filter media unit 220 by a predetermined distance and formed in a predetermined shape to secondary purify the primary purified raw water; including,
The second filter media unit 230 includes a plurality of through-holes formed therein, a bending case 231 having a storage space therein; and a plurality of granular fiber filter media 232 built in the storage space of the bending case 231; includes,
The bent case 231 includes an opening 231a that is opened by a hinge; A high-efficiency non-point pollution reduction facility with easy maintenance, characterized in that it is coupled to the upper and lower sides of the opening part, and includes a bent part 231b that allows the bent case 231 to have a “b” shape. delete delete The method of claim 1,
The bent portion 231b is a high-efficiency non-point pollution reduction facility that is easy to maintain, characterized in that an inclined surface 231b-1 that is inclined toward the upper side is formed on one side. 5. The method of claim 4,
The bent portion 231b has a high-efficiency non-point pollution reduction that is easy to maintain, characterized in that a support jaw 231b-2 for supporting the upper side of the open portion 231a is formed at a position spaced a predetermined distance downward from the upper end. facility The method of claim 1,
A high-efficiency non-point pollution reduction facility with easy maintenance, characterized in that an inlet is further formed on the upper surface of the opening 231a The method of claim 1,
The granular fiber filter media 232 is a high-efficiency non-point pollution reduction facility that is easy to maintain, characterized in that it is coated with graphene oxide. The method of claim 1,
The granular fiber filter media 232 has a density of 0.20 to 0.60 g/cm 3 and a void of 2.0 to 160 μm. 7. The method of any one of claims 1, 4, 5, 6,
A screen 120 is installed on the upper side of the side wall of the pretreatment tank 100, and the screen 120 includes a sieve 121 forming an outer surface and a rib 122 provided on the inner surface of the sieve 121. High-efficiency non-point pollution reduction facility that is easy to maintain, characterized in that it consists of

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