KR101777461B1 - (An integrated management system of stormwater treatment and storage facilities in the urban rivers - Google Patents

(An integrated management system of stormwater treatment and storage facilities in the urban rivers Download PDF

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Publication number
KR101777461B1
KR101777461B1 KR1020150113473A KR20150113473A KR101777461B1 KR 101777461 B1 KR101777461 B1 KR 101777461B1 KR 1020150113473 A KR1020150113473 A KR 1020150113473A KR 20150113473 A KR20150113473 A KR 20150113473A KR 101777461 B1 KR101777461 B1 KR 101777461B1
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South Korea
Prior art keywords
water
storage tank
cartridge filter
filter unit
river
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KR1020150113473A
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Korean (ko)
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KR20170019279A (en
Inventor
서동일
Original Assignee
충남대학교산학협력단
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Priority to KR1020150113473A priority Critical patent/KR101777461B1/en
Publication of KR20170019279A publication Critical patent/KR20170019279A/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/101Dedicated additional structures, interposed or parallel to the sewer system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143Filter condition indicators
    • B01D35/1435Filter condition indicators with alarm means
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105Accessories, e.g. flow regulators or cleaning devices
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2221/00Applications of separation devices
    • B01D2221/12Separation devices for treating rain or storm water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F2201/00Details, devices or methods not otherwise provided for
    • E03F2201/10Dividing the first rain flush out of the stormwater flow

Abstract

The present invention relates to a rainfall management method and a rainfall management method for improving river water quality at an early storm, which is capable of improving the quality of a river (especially at an early stormy weather) and maintaining a flow rate, This invention relates to a storage management system.
The present invention is directed to improving the quality of the river water including the treatment water inflow section 10, the screen 100, the storage tank 200, the cartridge filter filtering apparatus 300, the treated water storage tank 360, And a water treatment system for water treatment,
The water level sensor 410 is installed in the storage tank 200 to adjust the water level of the storage tank,
The water quality sensor 420 is installed in the storage tank 200 and the process water storage tank 360 to control the water treatment conditions of the storage tank and the cartridge filter filtering device,
The cartridge filter 300 is provided with a cartridge replacement alarm sensor 430 to automatically inform the replacement timing of the cartridge,
The inflow and outflow control valve 440 is installed in the treated water inflow section 10 and the treated water outflow section 20 to control inflow and outflow of treated water. Management system.
The water treatment system according to the present invention is installed in a slope 1 of a river and includes a treatment water inflow section 10, a screen 100, a storage tank 200, a carage filter apparatus 300, And a water treatment system (1000) for improving the quality of the river water including the water supply unit (20).
The cartridge filter unit 300 may include a cartridge filter unit 310 and a cartridge filter unit 320. The water filter system 300 may include a cartridge filter unit 310 and a cartridge filter unit 320, Provides comprehensive management system of rainfall treatment and storage facilities in urban rivers.

Description

An integrated management system of stormwater treatment and storage facilities in the urban rivers,

The present invention relates to a rainfall management method and a rainfall management method for improving river water quality at an early storm, which is capable of improving the quality of a river (especially at an early stormy weather) and maintaining a flow rate, This invention relates to a storage management system.

Generally, the pollutants are point pollutants discharged from a limited point pollution sources such as domestic sewage, industrial wastewater and livestock wastewater, and pollutants such as agricultural land, grassland, forest site, construction site, mine, Discharge areas such as landfills, roads, parking lots, plazas, bus stops, dense residential areas can be divided into nonpoint pollutants emitted from a wide range of nonpoint pollution sources.

Therefore, in the case of the point pollutants having a clear and defined discharge point, there is a separate purification apparatus or a wastewater treatment facility installed in a home, a factory, an livestock farm, etc., to purify pollutants to a certain extent, The site is unclear and remains on a wide range of ground surface. It is a major cause of water pollution due to inflow of rainwater into public water bodies such as rivers, inland waters, and lake waters and groundwater.

Accordingly, recently, there has been provided an apparatus for preventing contaminants discharged from a non-point pollution source from entering into a public water area such as a river, an inner bay, a lake, or ground water along with an initial rainfall.

Various methods for removing pollutants discharged from non-point pollution sources as described above are known, including chemical methods, biological methods, and physical methods.

Among these removal methods, the processing device for removing contaminants by physical methods is Korea Patent Registration No. 10-0897258 (Registration date on May 5, 2009), Korean Patent Registration No. 10-0849017 (Registration date on July 22, 2008) Patent Registration No. 10-0718719 and the like.

That is, a conventional non-point source treatment apparatus includes a screen and a flow rate adjusting tank, a slope plate settling tank, a filtration adsorption and discharge tank, or a first filtration tank having a vortex induction plate for vortex- A second filtration tank having a filtration filter and a third filtration tank filled with a filter medium are provided in a filtration tank or a sedimentation tank having a filter member and a filtration tank to filter various contaminants contained in raw water flowing from a non- .

However, in such a conventional non-point source treatment apparatus, the filter member to which the contaminants are adsorbed or to be attached by filtration must be regularly replaced with a new one in order to increase filtration efficiency. However, the work of replacing the filter member by the operator is very troublesome, There is a problem that the maintenance cost is increased.

In addition, when the raw water is filtered using the filter medium packed in the filtration tank, the operation of replacing the filter medium with a new filter medium is relatively cumbersome and requires a long replacement time, Respectively.

Especially, it is very difficult to prevent contamination of streams by sewage or wastewater flowing into rivers in the early storm surge.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a water treatment system for improving the water quality of an urban river and maintaining the flow rate of the river, System, which is an invention relating to an integrated management system for rainfall treatment and storage facilities of urban rivers for improving the quality of urban river water.

Particularly, the present invention has an object of providing an integrated management system in a water treatment system so that it is easier to operate and easier to maintain than an existing system.

In addition, the present invention seeks to understand the processing status of the system through the sensor, to identify the parts requiring maintenance, and to secure the stability through the inflow and outflow control valve through the water level sensor. In addition to the simple water treatment system, With the introduced system, we want to provide the technology that users can manage not only on site but also remotely.

The present invention also provides a technology for reducing the cost of operations management by integrating management methods by introducing an integrated management system into a large number of systems.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-

A water treatment system for improving the quality of the river water, including a treatment water inflow section 10, a screen 100, a storage tank 200, a cartridge filter filtration apparatus 300, a treated water storage tank 360, And,

The water level sensor 410 is installed in the storage tank 200 to adjust the water level of the storage tank,

The water quality sensor 420 is installed in the storage tank 200 and the process water storage tank 360 to control the water treatment conditions of the storage tank and the cartridge filter filtering device,

The cartridge filter 300 is provided with a cartridge replacement alarm sensor 430 to automatically inform the replacement timing of the cartridge,

The inflow and outflow control valve 440 is installed in the treated water inflow section 10 and the treated water outflow section 20 to control inflow and outflow of treated water. Management system.

The water treatment system according to the present invention is installed in a slope 1 of a river and includes a treatment water inflow section 10, a screen 100, a storage tank 200, a carage filter apparatus 300, And a water treatment system (1000) for improving the quality of the river water including the water supply unit (20).

The cartridge filter unit 300 may include a cartridge filter unit 310 and a cartridge filter unit 320. The water filter system 300 may include a cartridge filter unit 310 and a cartridge filter unit 320, Provides comprehensive management system of rainfall treatment and storage facilities in urban rivers.

The water treatment system for improving the river water quality according to the present invention is installed at the slope of the river so that the effect of preventing the contamination of the river by the sewage or the wastewater flowing into the river at the time of early storming is remarkably high.

In addition, the water treatment system for improving the river water quality according to the present invention has an effect of improving the quality of the river and maintaining the flow rate of the river especially at the time of initial excellent weather.

In addition, the water treatment system for improving the quality of the river according to the present invention is economical due to the use of the cartridge filter unit in the filtration apparatus that performs water treatment at the time of early storming, and is easy to use and replace.

FIG. 1 is a conceptual diagram of a water treatment system for improving river water quality according to the present invention installed at a river mouth.
2 is a conceptual diagram of a water treatment system for improving the water quality according to the present invention.
3 is a conceptual view of a cartridge filter portion of a water treatment system for improving the quality of a river according to the present invention.
4 is a conceptual diagram of an integrated management system of rainfall processing and storage facilities of an urban river according to the present invention.
FIG. 4B is a conceptual view of a comprehensive control section of a comprehensive management system for rainfall processing and storage facilities in an urban river according to the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The present invention is directed to improving the quality of the river water including the treatment water inflow section 10, the screen 100, the storage tank 200, the cartridge filter filtering apparatus 300, the treated water storage tank 360, And a water treatment system for water treatment,

The water level sensor 410 is installed in the storage tank 200 to adjust the water level of the storage tank,

The water quality sensor 420 is installed in the storage tank 200 and the process water storage tank 360 to control the water treatment conditions of the storage tank and the cartridge filter filtering device,

The cartridge filter 300 is provided with a cartridge replacement alarm sensor 430 to automatically inform the replacement timing of the cartridge,

The inflow and outflow control valve 440 is installed in the treated water inflow section 10 and the treated water outflow section 20 to control inflow and outflow of treated water. Management system.

The screen 100, the storage tank 200, the carage filter filtration unit 300, the treated water outlet 20, and the treated water outlet 20 are installed in the slope 1 of the river, And a water treatment system 1000 for improving the quality of the river water.

As shown in FIG. 1, the technical feature of the present invention is that the water treatment system is installed in the slope 1 of the river.

Since the water treatment system of the present invention is installed at the slope of the river, the water quality of the stream can be improved and the flow rate of the stream can be maintained at the time of the initial storm.

The slope (1) mentioned above refers to the edge of water (2) such as a river or river, or a place where the water is densely populated. In other words, it refers to the place where the water flows in the shape of a hill at the edge of the place where the water flows, and the term "habitat site" was also used.

The treatment water inflow section 10 of the present invention means a device or means into which sewage or wastewater flows in the initial storm surge.

The above-described screen 100 of the present invention means a screen of a sewage treatment plant which removes ordinary roughness or fine contaminants.

The storage tank 200 of the present invention means a facility for storing or storing sewage or wastewater that has passed through the screen for a predetermined period of time.

Therefore, the storage tank is generally formed in the form of a normal water storage tank.

The present invention is characterized in that an inflow leading waterway 210 is added to the end portion of the storage tank and the sewage or waste water in the storage tank is introduced into the carage filter unit 300 through the inflow leading waterway.

As shown in FIG. 2, the inflow conduit 210 at the rear end of the storage tank according to the present invention has an inlet 201 formed in a lower portion of the storage tank, and sewage or waste water is introduced into the inflow conduit 210.

In addition, the present invention is characterized in that an outlet 211 is formed in the upper part of the inflow conveying water passage 210 so that sewage or wastewater flows into the carage filter unit 300.

According to the structure of the hydrodynamic inflow delivery channel, the function of effectively filtering contaminants of sewage or wastewater flowing into the carage filter unit 300 is performed.

The technical feature of the present invention is that the sewage or wastewater that has passed through the storage tank flows into the cartridge filter unit 300 and is discharged to the river after the pollutants are removed.

The cartridge filter unit 300 of the present invention means a filtration unit or means or facility equipped with a cartridge type filter.

As shown in FIG. 2, the cartridge filter unit 300 of the present invention includes a cartridge filter holder 310 and a cartridge filter unit 320.

The cartridge filter holding unit 310 of the present invention divides the cartridge filter unit 300 to form one or a plurality of cartridge filter units 320 so that the cartridge filter unit 320 is placed and mounted.

Therefore, the cartridge filter housing 310 of the present invention is partitioned by the partitioning part 330 provided in the cartridge filter unit 300.

The waste water or wastewater flows into the cartridge filter housing 310 and is moved to another cartridge filter housing 310 through the partition 311 to be processed.

The cartridge filter unit 320 of the present invention is installed in the cartridge filter holding unit 310 to perform a function of filtering out contaminants from the sewage or wastewater flowing into the cartridge filter unit 300 Or means.

The cartridge filter unit 320 of the present invention includes a filter unit main body 320-1 and a filter unit 322. [

As shown in FIG. 3, the filter unit main body 320-1 refers to an apparatus or means for performing a function of forming a skeleton for mounting the filter unit 322 described above.

Accordingly, the filter unit main body 320-1 has a skeletal lattice shape, a cubic shape, or the like, and has a structure in which liquid such as sewage or wastewater can freely flow out.

The technical feature of the present invention is that the filter unit 322 is not expensive but uses a net or the like that contains vegetables or the like, which is economical and has an advantage of improving efficiency.

In the case of using a filter in a conventional water treatment apparatus, it is costly to use an expensive filter as a filtration apparatus. When the filter becomes fouling, it is very troublesome and difficult to remove the contamination or replace it with a new one Respectively.

As described above, according to the present invention, the filter unit 322 uses a filter such as a net containing ordinary vegetable or the like, so that the manufacturing cost is significantly lowered. Even if the filter is contaminated, So that the efficiency of the work is remarkably enhanced.

Needless to say, the filter portion 322 of the present invention may be formed of meshes having various dimensions according to the needs of the user.

In the present invention, the sewage or wastewater treated in the one or more cartridge filter units 320 is discharged to the river through the treated water outlet 20.

In addition, the present invention may additionally include a treated water storage tank 360, and the treated water discharged through the cartridge filter apparatus may be drained through the treated water outlet 20 to the treated water storage tank 360 ) And is discharged to the river.

The present invention provides a water treatment system (1000) for improving the quality of the river water having the above-described structure and function.

The present invention is characterized in that the water level sensor 410 is installed in the storage tank 200 to control the water level of the storage tank.

As shown in FIG. 4, the water level sensor 410 is installed in the storage tank 200, and the water level of the storage tank is automatically detected. The water level information is transmitted to the general control unit 500 and notified to the manager's terminal 510 The function will be performed.

The water level sensor 410 refers to a sensor for sensing a normal water level.

The general control unit 500 of the present invention may include an ordinary central processing unit and may be based on an operating system (OS) capable of operating software such as a computer program and an application program.

The meaning of the integrated control unit is used as a general meaning of a means or a device that is provided with a CPU, a micro controller unit (MCU), a memory, a RAM, or a ROM so as to drive the software.

The integrated control unit 500 of the present invention may include an application program capable of collecting, analyzing and analyzing the water level information transmitted from the water level sensor and the water quality information transmitted from the water quality sensor.

The level information sensed by the level sensor of the present invention is transmitted to the integrated control unit.

In the present invention, when the water level sensor detects the water level exceeding the water level limit in the storage tank, the water level is prevented from being introduced into the water treatment system of the present invention. If the storage tank is within the water level limit In the case of the above case), a function of causing the initial storm to be introduced and processed.

4B, the water level sensor 410 controls the water level control valve 440 and the outflow control valve 450 of the storage tank through the general control unit.

The present invention is characterized in that a water quality sensor 420 is installed in the storage tank 200 and the treated water storage tank 360 to control the water treatment conditions of the storage tank and the cartridge filter apparatus .

The water quality sensor 420 of the present invention transmits the measured water quality information to the general control unit 500 and notifies the manager terminal 510 of the measured water quality information.

The integrated control unit 500 continuously collects the received water quality information to determine whether the water treatment is well performed in the storage tank and the cartridge filter filtering apparatus, and transmits the information to the administrator's terminal so that the administrator can grasp the information. .

When the information received from the water quality sensor installed in the treated water storage tank 360 of the cartridge filter apparatus 300 is in an area that is not water treated, it is notified that the filter is contaminated and needs to be replaced .

Accordingly, the present invention is characterized in that a cartridge replacement alarm sensor 430 is provided in the cartridge filter 300 to automatically inform the replacement timing of the cartridge filter.

As described above, the water quality information sensed by the treatment water storage tank 360 is transmitted to the comprehensive control unit, and the integrated control unit determines the replacement timing of the cartridge filter by checking the transferred water quality information, Catridge Replacement Alarm Sensor ") < / RTI >

With this function, the manager automatically knows when the filter of the cartridge filter 300 is to be replaced.

The present invention further includes a reservoir outflow control valve 450 in the reservoir tank 200 to perform a function of discharging the reservoir tank when the level of the reservoir tank is high or water quality is good.

Therefore, the storage tank outflow control valve 450 is interlocked with the water quality sensor 420 installed in the storage tank.

Also, the present invention is characterized in that the inflow / outflow control valve 440 is installed in the treated water inflow part 10 and the treated water outflow part 20 to control inflow and outflow of the treated water.

As described above, the present invention automatically blocks the inflow / outflow control valve 440 of the process water inflow section 10 when the level of the water level in the storage tank exceeds the limit in the event that the inflow of rainwater into the storage tank becomes excessive during the initial storm surge Allow the initial storm to flow naturally into the stream.

In addition, the present invention automatically prevents the inflow / outflow control valve (440) of the treated water outlet (20) when it is in the above-mentioned season, thereby maintaining the water level of the storage tank at a constant level to prevent the water quality of the storage tank from deteriorating .

The inflow and outflow control valve 440 is preferably constructed by a conventional automatic control valve system.

The present invention monitors the water level information and the water quality information of the water treatment system by the manager's terminal 510 and can scientifically and systematically manage the information.

The above-mentioned terminal includes a PC, a PDP, a smart phone, and the like connected by wire or wireless communication.

The present invention provides an integrated management system for rainfall processing and storage facilities of urban rivers having the above-described structure and functions.

The present invention is a very useful invention for a business for processing, selling, distributing and researching sewage or wastewater.

The slope of the river (1),
The treated water inflow section 10,
A screen 100, a storage tank 200, a carage filter apparatus 300,
The cartridge filter holding portion 310, the cartridge filter portion 320,
A water level sensor 410, a water quality sensor 420,
The cartridge replacement alarm sensor 430, the inflow outflow control valve 440,
The treated water outlet 20

Claims (3)

The treated water inflow section 10 into which the sewage or wastewater at the time of excellent flows,
A screen 100 for removing the roughness or fine contaminants,
A storage tank 200 for storing or storing sewage or wastewater that has passed through the screen for a predetermined period of time,
A cartridge filter unit 300 in which the function of filtering the contaminants of the incoming sewage or waste water is performed,
The cartridge filter unit 300 includes a cartridge filter housing 310 and a cartridge filter unit 320,
The cartridge filter unit 320 includes a filter unit main body 320-1 and a filter unit 322,
The filter unit main body 320-1 has a skeleton-shaped lattice or a cubic shape. The filter unit main body 320-1 has a structure in which sewage or wastewater can freely flow out, and a skeleton And,
The filter unit 322 uses a net filter for storing vegetables,
A treated water storage tank 360 in which treated water treated through the cartridge filter apparatus described above is stored,
And a treatment water outlet (20) through which the treated sewage or wastewater flows out. The water treatment system for improving the quality of the river water comprises:
The water level sensor 410 is installed in the storage tank 200 to adjust the water level of the storage tank,
A storage tank outflow control valve 450 is added to the storage tank 200 to perform a function of discharging the storage tank when the water level of the storage tank is high or water quality is good,
The inflow / outflow control valve 440 is installed in the treated water inflow section 10 and the treated water outflow section 20 to control inflow and outflow of the treated water,
The water level sensor 410 provides the water level information to the general controller 500 and the general controller 500 controls the water level of the water level in the storage tank 500 when the water level information in the storage tank exceeds the limit, The inflow and outflow control valve 440 of the unit 10 is automatically closed to allow the rainwater to flow naturally into the river,
The water outflow control valve 440 of the treated water outlet 20 is automatically blocked to keep the water level of the storage tank constant so as to prevent deterioration of the water quality of the storage tank,
The water quality sensor 420 is installed in the storage tank 200 and the process water storage tank 360 to control the water treatment conditions of the storage tank and the cartridge filter filtering device,
The cartridge filter unit 300 is provided with a cartridge replacement alarm sensor 430 to automatically inform the replacement timing of the cartridge,
The integrated control unit 500 determines the water treatment operation status of the storage tank and the cartridge filter filtration apparatus by using the water level information provided by the water level sensor 410 and the water quality information provided by the water quality sensor 420, And notifies the manager's terminal (510) of the water quality information.
The method according to claim 1,
Wherein the water treatment system is installed at a slope (1) of a river.
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KR1020150113473A 2015-08-11 2015-08-11 (An integrated management system of stormwater treatment and storage facilities in the urban rivers KR101777461B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200015237A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water treatment device with filter cleaning function
KR20200015238A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water purification device provided with bypass means
KR20200015239A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water purification system with coagulation means

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102099930B1 (en) * 2018-07-24 2020-04-10 주식회사 산해 Apparatus for purifying sludge with the reverse washing
KR102199644B1 (en) * 2020-07-13 2021-01-07 (주) 한국엔피기술 System for disposal nonpoint pollution having a consolidation and relaxation technology

Citations (1)

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Publication number Priority date Publication date Assignee Title
KR101350617B1 (en) * 2013-05-24 2014-01-15 주식회사 한국종합기술 Apparatus for rainwater recycling

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
KR101350617B1 (en) * 2013-05-24 2014-01-15 주식회사 한국종합기술 Apparatus for rainwater recycling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200015237A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water treatment device with filter cleaning function
KR20200015238A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water purification device provided with bypass means
KR20200015239A (en) 2018-08-03 2020-02-12 (주)보경종합기술 Water purification system with coagulation means

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