KR101220539B1 - Water treating apparatus - Google Patents

Abstract

PURPOSE: A water treatment apparatus is provided to improve maintenance efficiency by improving the efficiency of pollutant floatation through including a guiding part at a floating and settling bath. CONSTITUTION: A water treatment apparatus includes a stirring part(100), a floating and settling bath(200), a bubble generating part(300), a guiding part, and a discharging and water collecting part(700). The stirring part generates water to be treated by stirring chemicals and feed water. The floating and settling bath separates the water to be treated into pollutants and treated water. The bubble generating part is arranged on the floating and settling bath and supplies bubbles in order to float the pollutants. The guiding part guides the floated pollutants and removes the dead zone of the floating and settling bath. The discharging and water collecting part treats the treated water which is separated from the pollutants. A slanted floatation guiding part is upwardly formed on the guiding part in order to float the pollutants. A slanted dead zone preventive part removes the dead zone of the floating and setting bath by including a discharging part(210) which discharges settled pollutants.

Description

Water treatment device {WATER TREATING APPARATUS}

The present invention relates to a water treatment apparatus, and more particularly, to treat organic matter, suspended solids, total phosphorus, total nitrogen and other contaminants for sewage, waste water, purified water and lake water, and various other contaminated water to improve treated water quality. The present invention relates to a water treatment apparatus for stably treating.

In general, there are biological treatments and physicochemical treatments in the water treatment method including pollutants such as sewage, waste water and purified water. Among these, biological treatment methods have limitations in recent years, and technology development for physicochemical methods has been actively performed. Such physical and chemical methods for treating contaminated water include various methods such as pressure injury, filtration, precipitation, ultraviolet disinfection, ozone disinfection, and chlorine disinfection. Recently, many of the various physicochemical methods have been used to pressurization floating in the process efficiency and economical aspects.

Here, the pressurization method and apparatus for treating pollutants using pressurized water generated by pressurizing gas to generate pressurized water are configured in various forms to treat pollutants. Several physicochemical and control measurement methods are applied to the pressure flotation device, and each element technology is combined and operated in one treatment method to treat pollutants.

On the other hand, Korean Patent No. 10-0606555 (Registration Date: 2006.07.21) discloses a multi-functional high efficiency water treatment apparatus and water purification method through the ozone flotation method and granular activated carbon filtration combination.

The general water treatment devices do not consider the details of each element technology so much that the overall treatment efficiency does not increase, and as the society becomes more advanced, they cannot cope with the diversity of pollutants on raw water generated in the case of sewage and waste water. Have

Therefore, there is a need to improve this.

The present invention has been created by the necessity as described above, to stably treat various kinds of pollutants in the treatment of sewage, wastewater, purified water and other contaminated water to improve the water quality of the treated water, and improve the stability and reliability It is an object of the present invention to provide a water treatment apparatus.

The water treatment apparatus according to the present invention comprises: a stirring unit for generating a water to be treated by stirring the chemical with raw water, a floating sedimentation tank for separating the water to be treated generated in the stirring unit into contaminants and treated water, and the floating sedimentation tank. And a bubble generating unit for supplying bubbles so that the contaminants float, a guide unit for guiding the contaminants floating by the bubbles generated in the bubble generating unit and removing the dead zone of the flotation settling tank, and the flotation settling tank It characterized in that it comprises an outflow collecting unit for treating the treated water separated from the contaminants.

In addition, the stirring unit is characterized in that it comprises a rapid stirrer for rapid mixing by injecting the drug into the raw water and a slow stirrer for slow stirring by holding the raw water and the drug supplied from the rapid stirrer.

The slow stirring part may include a plurality of flocculation tanks connected to each other and a stirrer provided in the plurality of flocculation tanks to stir the raw water and the chemicals, wherein the stirrer is rotated by a driving motor, Horizontal paddles provided in the upper and lower ends, characterized in that it comprises a plurality of vertical paddles interconnected with the horizontal paddles.

The bubble generating unit may include a pressurized water supply unit supplying pressurized water at high pressure and a microbubble spray unit configured to discharge the high pressure pressurized water supplied from the pressurized water supply unit to the flotation settling tank to form microbubbles.

In addition, the pressurized water supply unit is characterized in that it comprises an advanced oxidation treatment for advanced oxidation treatment of high pressure pressurized water.

The advanced oxidation treatment unit may include an oxidizing gas supply unit for supplying an oxidizing gas to the pressurized water supply unit and an ultraviolet contact unit for inducing a photolysis reaction to the oxidizing gas of the oxidizing gas supply unit.

In addition, the micro-bubble injection unit is connected to the pressurized water supply unit, the branch pipe branched into a plurality of, and the injection pipe and the injection which is provided in each of the branch pipe to inject the high-pressure pressurized water supplied from the pressurized water supply unit Wrapping the circumference of the yarn, it characterized in that it comprises a pressure reducing tube for reducing the high pressure pressurized water discharged through the injection pipe.

In addition, the guide portion is characterized in that it comprises a floating guide inclined portion which is formed to be inclined upward so that the contaminants rise by the bubble generating unit and the dead zone prevention inclined portion for removing the dead zone of the flotation tank.

In addition, the flotation guide inclined portion is provided on the bottom surface of the flotation settle, the dead zone prevention slope portion is formed in succession to the flotation guide inclined portion, characterized in that it is formed inclined downward from the top of the flotation guide slope.

In addition, the end of the dead zone prevention slope portion is characterized in that the discharge portion for discharging sediment contaminants are provided.

In addition, the flotation settling tank is equipped with a scrubbing scum removing unit for removing the contaminants injured in the flotation settling tank, characterized in that the sludge removal unit for removing the contaminant precipitated on the bottom surface of the flotation settling tank is provided.

The water treatment device according to the present invention can be rapidly injected with a chemical in a pump or weightless state, made of a plurality of stages, by maximizing the cohesive efficiency by improved stirrer can improve the treatment efficiency.

In addition, the present invention has a guide portion in the flotation settling tank to improve the floating efficiency of the contaminants, and by removing the dead zone, it is possible to improve the maintenance and treatment efficiency, by the sludge removal device that is settled at the bottom of the flotation settling tank This can solve the problem of deterioration of treated water quality.

In addition, the present invention can improve the overall treatment efficiency for the pressure injury by improving the stable micro-bubbles generated by the bubble generating unit, floating scum remover and the outflow collecting pipe.

In addition, the present invention is provided with a super-oxidation treatment unit to overcome the limitations of the treatment efficiency of the pressurization by injecting an oxidizing gas such as ozone and UV (UV) fixation to overcome the limitations of the treatment efficiency of the pressurized portion more advanced and difficult to treat contaminants It is possible to obtain continuous, stable and high efficiency treatment water quality.

In addition, the present invention can reduce the operating cost of the facility, thereby reducing the maintenance cost, the burden of excessive initial input cost reduction and land area reduction when introducing additional processes for advanced wastewater treatment.

1 is a schematic cross-sectional view of a water treatment apparatus according to an embodiment of the present invention;
Figure 2 is a view showing a stirring portion of the water treatment device according to an embodiment of the present invention,
3 is a view showing a stirrer of a water treatment device according to an embodiment of the present invention;
Figure 4 is a view showing the flotation settling tank of the water treatment device according to an embodiment of the present invention,
5 is a view showing a bubble generating portion of the water treatment device according to an embodiment of the present invention,
6 is a view showing the micro-bubble spraying unit of the water treatment device according to an embodiment of the present invention,
7 is a view showing an advanced oxidation treatment of the water treatment device according to an embodiment of the present invention,
8 is a view showing a modified example of the advanced oxidation treatment unit of the water treatment device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a water treatment apparatus according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a schematic cross-sectional view of a water treatment apparatus according to an embodiment of the present invention, Figure 2 is a view showing a stirring portion of the water treatment apparatus according to an embodiment of the present invention, Figure 3 is a water treatment according to an embodiment of the present invention Figure 4 is a view showing a stirrer of the device, Figure 4 is a view showing the flotation settling tank of the water treatment apparatus according to an embodiment of the present invention, Figure 5 is a view showing the bubble generator of the water treatment apparatus according to an embodiment of the present invention, 6 is a view showing the micro-bubble injection unit of the water treatment device according to an embodiment of the present invention.

1 to 6, the water treatment device 10 according to an embodiment of the present invention, the stirring unit 100, the flotation settling tank 200, the bubble generating unit 300, the guide unit 400 and the outflow collection The hand portion 700 is included.

First, contaminants of the present embodiment include floc, sludge, scum, and the like, but the contaminants are not limited thereto. Flock refers to contaminants generated in raw water by stirring raw water and chemicals, and sludge refers to contaminants settled on the bottom surface of the flotation tank 200, and scum refers to contaminants that float to the surface by microbubbles.

Stirring unit 100 is to produce the water to be treated by stirring the drug and the raw water, the water to be treated refers to the raw water in which the floc is generated due to the stirring of the drug and the raw water. The stirring unit 100 includes a rapid stirring unit 110 for injecting a drug into raw water and a rapid stirring unit 110 for rapid mixing and a slow stirring unit 120 for holding and stirring the raw water and the medicine supplied from the rapid stirring unit 110.

In this embodiment, the drug is injected into the inlet of the raw water for the mixed aggregation of contaminants, the type of the drug is a chemical for controlling pH such as general aluminum sulfate, PAC, iron sulfate, polymer-based flocculant and caustic soda, sulfuric acid And other chemicals required for the process. At this time, the injection amount of the drug is automatically adjusted by the injection amount of the medicine by the automatic measurement measuring instrument installed in the rear end of the flotation tank 200 or the final discharge area.

The rapid stirring unit 110 uses a pump or installs a rapid mixing tank at the moment of injecting chemicals in a zero gravity state to reduce the site area and increase processing efficiency. In more detail, the rapid stirring unit 110 may be configured in the form of diffusion mixing by pressure water jet, in-line mechanical mixing, and the like.

Slow-stirring portion 120 is made of a relatively slow stirring, the sticking is made between the flocs by stirring to increase the size of the flocs. The slow stirring unit 120 includes a plurality of agglomeration tanks 121 and a plurality of agglomeration tanks 121 connected to each other and include a stirrer 125 for stirring raw water and chemicals. The agglomeration tank 121 is divided into a plurality of partitions 124, the flow path 124a is formed between the partitions 124, the flow is made.

That is, as shown in FIG. 2, the treatment target water supplied from the rapid stirring unit 110 flows over the partition wall 124 formed on one side and is supplied to the upper portion of the first aggregation tank 122 along the flow path 124a. Is moved downward from the upper side to the lower side, and is supplied to the lower portion of the second agglomeration tank 123 along the lower flow passage 124a of the partition wall 124 formed on one side of the first aggregation tank 122 to move upward from the lower portion to the upper portion. do. Since each agglomeration tank 121 is provided with a stirrer 125 so that the slow stirring is performed, the diameter of the flocs increases due to the interlocking or sticking between the flocs.

In the present embodiment, although the plurality of agglomeration tanks 121 are illustrated as two, the present invention is not limited thereto and may be added or subtracted according to the required stirring efficiency.

The stirrer 125 includes a plurality of horizontal paddles 128 and horizontal paddles 128 interconnected to the stirring shaft 127 rotated by the driving motor 126 and the upper and lower ends of the stirring shaft 127. Vertical paddle 129. That is, in order to increase the stirring strength and the cohesive efficiency, the vertical paddle type having the vertical paddle 129 attached to the horizontal paddle 128 of the stirrer 125 is applied. The material of the vertical paddle 129 may be a PDF and a related PE product produced by using HDPE as a raw material, and may be wood according to the purpose of use, and may be made of a material capable of other water treatment. The stirrer 125 operates by using the reducer and the driving motor 126 as the stirring shaft 127 in the plurality of flocculation tanks 121 and is positioned over the individual flocculation tanks 121 to maximize the coagulation efficiency.

Floating sedimentation tank 200 is to separate the treated water generated in the stirring unit 100 into the contaminant and the treated water, separated by the stirring unit 100 and the partition wall 124, the flow path in the lower portion of the partition wall 124 124a is formed and the water to be treated is supplied. The flotation settling tank 200 is provided with a bubble generator 300 and a guide unit 400 to separate the water to be treated into contaminants and treated water.

The bubble generating unit 300 is provided in the flotation settling tank 200 to supply bubbles to float the contaminants, and the high pressure supplied from the pressurized water supply unit 310 and the pressurized water supply unit 310 to supply high pressure pressurized water. Pressurized water is discharged to the flotation tank 200, and includes a microbubble injection unit 320 to form a microbubble.

The pressurized water supply unit 310 includes a pump 312 for recycling the treated water separated from the contaminants in the flotation settling tank 200, a pressurized tank 314 for storing the treated water recycled by the pump 312, and a pressurized tank ( 314, a compressor 316 for supplying compressed air. That is, the compressed high pressure pressurized water of the pressure tank 314 is transferred to the microbubble injection unit 320 and discharged from the flotation settling tank 200 to generate microbubbles.

The pump 312 is connected to the block-type collection tank 720 of the outflow collection unit 700 to be described later to recycle the treated water.

The microbubble injection unit 320 is connected to the pressurized water supply unit 310, and is provided in each of the branch pipes 322 and the branch pipes 322 branched into a plurality of high pressures supplied from the pressurized water supply unit 310. And a pressure reducing tube 326 surrounding the periphery of the injection tube 324 for injecting pressurized water and a high pressure pressurized water discharged through the injection tube 324.

Since the pressurized water supplied through the branch pipe 322 has a double pipe structure consisting of the injection pipe 324 and the pressure reducing pipe 326, the present embodiment can generate bubbles by operating the valve without a special device. The pressure reducing pipe 326 is provided with a spray pipe 324 for discharging the pressurized water by a special nozzle to distribute the pressurized water evenly on the front of the pressure reducing pipe 326 by a structure for discharging the pressurized water in the pressure reducing pipe 326. It flows into the flotation tank, and the stable coupling with the floc improves the flotation efficiency, thereby improving the overall treatment efficiency.

That is, this form can prevent the high-pressure pressurized water is directly discharged to destroy the flocs contained in the water to be treated to reduce the floating efficiency, and a certain amount of pressurized water is not evenly ejected is discharged to the flotation tank 200 Pressurized water can be biased to one side to prevent the fall of floating efficiency.

The microbubble spraying unit 320 includes a backwashing unit 330 to prevent the microbubble spraying unit 320 from being blocked. The branch pipe 322 is provided with a pressurized water inlet valve 323, and the backwashing unit 330 detects the blockage of the backwash valve 332 and the microbubble injection unit 320 provided in the branch pipe 322. The water level sensor 334 provided in the pressure tank 314, and the control unit 336 to control the pressurized water inlet valve 323 and the backwash valve 332 by the detected value of the water level sensor 334. That is, when the water level in the pressure tank 314 is increased because the pressurized water does not flow smoothly into the flotation tank 200 due to the blockage of the microbubble injection unit 320, the water level sensor 334 detects the pump 312. When the number of revolutions) decreases, the pressurized water inlet valve 323 is automatically closed by the PLC program and the backwash valve 332 is opened to perform backwashing. The time for backwashing is controlled by a timer (not shown).

The guide unit 400 guides the contaminants injured by the bubbles generated in the bubble generator 300 to the water surface, and prevents the vortex of the flotation tank 200, and contaminants are generated by the bubble generator 300. It includes a dead zone prevention inclined portion 420 to remove the dead zone of the levitation guide inclined portion 410 and the flotation tank 200 is inclined upward to rise. The injury guide inclined portion 410 is provided on the bottom surface of the flotation tank 200, the dead zone prevention slope portion 420 is formed in succession to the injury guide slope portion 410, the top of the injury guide slope portion 410 It is formed obliquely downward from.

As shown in FIG. 4, the guide part 400 of the present embodiment has a triangular structure. Meanwhile, in the present embodiment, the guide unit 400 has a triangular shape as an example, but the present invention is not limited thereto, and various shapes may be adopted to implement the functions of the present invention. In the present embodiment, the material of the guide part 400 is a material usable for concrete, stainless steel, PE material, and other water treatments. Guide portion 400 has a triangular form consisting of the injury guide inclined portion 410 and the dead zone prevention slope portion 420, so that the entire water flow inside the floating sedimentation tank 200 can be eliminated without congestion. The efficiency can be improved.

The flotation settling tank 200 is provided with a scrubbing scum removing unit 500 for removing the contaminants injured in the flotation settling tank 200, and the precipitation sludge removing unit 600 for removing contaminants deposited on the bottom of the flotation settling tank 200. ) Is provided.

The floating scum removing unit 500 is a device for removing the floating scum of the surface of the flotation tank 200 and discharges the scum floating on the water surface to the outside of the treatment facility without disturbing the scum. This is done by scraping the floating scum by using the inclined plate in the rear by the blade 510 provided in the floating scum removing unit 500 in the direction of the treatment water from the inlet of the flotation tank 200. The floating scum removing unit 500 has a bidirectional movement using a wire, a bidirectional movement using a chain, and a rotary movement using a two-stage chain.

In addition, when the oxidizing gas such as ozone is used by the advanced oxidation processing unit 180 to be described later, the oxidizing gas may be leaked to the flotation settling tank 200, and thus a closed space is required. Therefore, the floating scum removing unit 500 should also be located in an enclosed space, so the device must be made of durable material resistant to corrosion. The oxidizing gas should not leak out.

Sedimentation sludge removal unit 600 is provided with a scraper 620 in the chain 610 to move infinitely by the drive unit (not shown) and scrapes the sludge in which the scraper 620 is precipitated.

This is because when a failure occurs during operation in the floating process by the bubble generating unit 300 and stops the operation, flocs or contaminants inside the flotation tank 200 will be settled on the lower floor, and settle on the floor when the facility is restarted. The contaminants that have not been re-injured can build up on the floor and gradually increase in volume to prevent treatment from degrading the quality of the final treated water.

At this time, the end of the dead zone prevention slope portion 420 is provided with a discharge portion 210 for discharging the contaminated precipitate, the sludge collected by the scraper 620 may be discharged to the discharge portion (210).

In the present embodiment, the sedimentation sludge removing unit 600 is composed of a chain 610 and a scraper 620 to move indefinitely, but a differential pressure automatic sludge collector may be installed on the bottom of the flotation tank 200. The differential pressure automatic sludge collector is an underwater sludge collector that is automatically operated by a programmable logic controller. It is simple to install and can remove sludge and high concentration of solids.

The treated water separated from the contaminants in the flotation tank 200 is transferred to the rear end process and the final discharge area by the outflow collecting part 700. The outflow collecting part 700 includes a porous pipe 710 provided below the floating settling tank and a block-type water collecting tank 720 connected to the porous pipe pipe 710.

As shown in FIG. 4, a scum discharge unit 220 is provided between the flotation settling tank 200 and the block-type water collecting tank 720 to discharge scum collected by the scrubbing scum removing unit 500, and a porous pipe pipe ( 710 passes through the scum discharge unit 220 and is connected to the block-type water tank 720.

At this time, the perforated pipe 710 is provided at a height that does not interfere with the sedimentation sludge removal unit 600, the block-type water tank 720 to the outflow collecting part 700 in consideration of the flow of water in the flotation tank 200 as possible The effluent volume is calculated and designed without congestion intervals.

Meanwhile, as shown in FIG. 7, the pressurized water supply unit 310 includes an advanced oxidation processing unit 800 for highly oxidizing high pressure pressurized water.

At this time, in the process for producing the pressurized circulating water, a general pressurization in the pressurizing tank 314 pressurizes air, but in the present embodiment, oxidation of ozone gas, carbon dioxide gas, etc. is performed by the advanced oxidation processing unit 800 instead of general air. Floating flotation of the flotation tank 200 is removed by using pressurized circulating pressurized circulating water, and the organic matter is oxidized by oxidizing gas to lower the concentration of organic matter and increase the treatment efficiency such as sterilization and disinfection. .

The advanced oxidation treatment unit 800 includes an oxidizing gas supply unit 810 for supplying an oxidizing gas to the pressurized water supply unit 310 and an ultraviolet contact unit 820 for inducing a photolysis reaction to the oxidizing gas of the oxidizing gas supply unit 810. The oxidizing gas supply unit 810 of the present embodiment includes an ozone storage tank 814 for storing ozone generated by the ozone generator 812 and the ozone generator 812, and a pressurized tank 314 for ozone from the ozone storage tank 814. It includes an ozone pressurizer 816 to pressurize to deliver.

The ultraviolet contact portion 820 is provided in a line type in a line for injecting ozone gas or the like into the pressurized tank 314 in the oxidized gas pressurized water production line in addition to the treatment with the oxidizing gas. This induces a photolysis reaction by ozone or ozone and ultraviolet light, and then oxygen atoms are combined with water molecules in the ozone pressurized water generated in the pressurized tank 314 to generate hydrogen peroxide, which subsequently forms hydroxyl (OH—) radicals. . In other words, as a result of the initial reaction of ozone photolysis by ultraviolet energy, hydrogen peroxide is produced as an intermediate, which can be successively photolyzed to radicals of radicals and have a stronger oxidizing power than ozone alone.

At this time, the ultraviolet contact portion 820 is provided on the front side of the pressurized tank 314 in the pressurized water production line, the ultraviolet region of the ultraviolet contact portion 820 reacts at 250 ~ 310nm and one or more lamps horizontally in the water flow It is installed in closed-channel form.

In addition, Figure 8 is a modified example of the advanced oxidation treatment unit of the water treatment apparatus according to an embodiment of the present invention, it may be provided between the ozone storage tank 814 and the ozone pressurizer 816 as shown. The UV contact portion 820 is installed just before injecting ozone gas into the pressurized tank 314 so that the ozone gas reacts with the ultraviolet ray first and flows into the pressurized tank 314. For this reason, the compound can be decomposed through reaction using direct ozonation, photolysis, or radicals of hydroxide.

As described above, the water treatment apparatus according to an embodiment of the present invention is a technique for overcoming the limitations of treating by a general pressurized flotation method for treating sewage, wastewater, purified water, and other contaminated water. It can be installed, improve the treatment efficiency by maximizing the cohesive efficiency by improving the shape of the stirrer, and can improve the maintenance and treatment efficiency by removing the dead zone of the flotation settling tank by the guide portion.

In addition, it is possible to improve the overall treatment efficiency for the pressurization through the stable micro-bubble generation, improved scum removal unit and the outflow collecting unit, and sediment sludge removal unit to remove the sediment contaminants. In addition, by injecting oxidizing gas such as ozone and UV contact part into general pressure flotation technology, it can overcome the limitation of treatment efficiency on pressurized part and can process more advanced and difficult to process materials, thereby improving the efficiency of treated water quality. You can get it.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

10: water treatment device 100: agitator
110: rapid stirring 120: slow stirring
121: coagulation tank 122: first coagulation tank
123: second flocculation tank 124: partition wall
124a: Euro 125: Stirrer
126: drive motor 127: stirring shaft
128: horizontal paddle 129: vertical paddle
200: flotation tank 210: discharge part
220: scum discharge unit 300: bubble generation unit
310: pressurized water supply unit 312: pump
314: pressure tank 316: compressor
320: fine bubble injection unit 322: branch piping
323: pressurized water inlet valve 324: injection pipe
326: decompression tube 330: backwash
332: backwash valve 334: water level sensor
336: control unit 400: guide unit
410: injured guide slope 420: dead zone prevention slope
500: floating scum removing unit 510: blade
600: sediment sludge removal unit 610: chain
620: scraper 700: outflow collecting part
710: porous pipe 720: block type sump
800: advanced oxidation processing unit 810: oxidizing gas supply unit
812: AM generator 814: ozone storage tank
816: ozone pressurizer 820: UV contact unit

Claims (11)

Stirring unit for stirring the drug with the raw water to produce the water to be treated;
A flotation sedimentation tank separating the treated water generated in the stirring unit into contaminants and treated water;
A bubble generator provided in the floating settling tank to supply bubbles to float the pollutants;
A guide unit for guiding the contaminants floating by the bubbles generated in the bubble generator and removing the dead zone of the flotation tank; And
Includes an outflow collecting unit for treating the treated water separated from the contaminant in the flotation settling tank,
The guide portion is a floating guide inclined portion formed to be inclined upward so that the contaminants rise by the bubble generating unit; And
It includes a dead zone prevention slope for removing the dead zone of the flotation tank,
Water treatment device, characterized in that the discharge section for discharging sediment contaminants are provided at the end of the dead zone prevention slope.
The method of claim 1,
The stirring unit for rapid mixing by injecting the drug into the raw water; And
And a slow stirrer for slow stirring by holding the raw water and the medicine supplied from the rapid stirrer.
The method of claim 2,
The slow stirring portion is a plurality of agglomeration tank connected to each other; And
A stirrer provided in the plurality of flocculation tanks to stir the raw water and the medicine;
The stirrer is a stirring shaft rotated by a drive motor;
Horizontal paddles provided at upper and lower ends of the stirring shaft; And
And a plurality of vertical paddles interconnecting the horizontal paddles.
The method of claim 1,
The bubble generating unit is a pressurized water supply unit for supplying high pressure pressurized water; And
And a high-pressure pressurized water supplied from the pressurized water supply unit is discharged to the flotation settling tank to form a micro bubble.
5. The method of claim 4,
The pressurized water supply unit is a water treatment device, characterized in that it comprises an advanced oxidation treatment for high oxidation treatment of high pressure pressurized water.
6. The method of claim 5,
The advanced oxidation treatment unit is an oxidizing gas supply unit for supplying an oxidizing gas to the pressurized water supply unit; And
And an ultraviolet contact unit for inducing a photolysis reaction to the oxidizing gas of the oxidizing gas supply unit.
5. The method of claim 4,
The micro-bubble injection unit is connected to the pressurized water supply unit, branch pipe branched into a plurality;
Injection pipes provided in each of the branch pipes to inject high-pressure pressurized water supplied from the pressurized water supply unit; And
Wrapping the periphery of the injection pipe, the water treatment apparatus comprising a pressure reducing pipe for reducing the high pressure pressurized water discharged through the injection pipe.
delete The method of claim 1,
The flotation guide slope is provided on the bottom surface of the flotation tank;
The dead zone prevention slope portion is formed in succession to the floating guide inclined portion, characterized in that the water treatment apparatus is formed to be inclined downward from the top of the floating guide slope portion.
delete The method of claim 1,
The floating settling tank is provided with a floating scum removing unit for removing the contaminants injured in the floating settling tank;
The water treatment apparatus, characterized in that the sedimentation sludge removal unit is provided to remove the contaminants deposited on the bottom surface of the flotation tank.

Images