KR102452662B1 - Wastewater treatment apparatus having the circulation guide unit of penton oxidation and treated water - Google Patents

Abstract

The present invention relates to an advanced sewage treatment apparatus which comprises: a flow rate adjustment tank (1); an anaerobic tank (2) removing phosphorus from treated water introduced from the flow rate adjustment tank (1); an anoxic tank (3) removing nitrogen of a nitric acid from the treated water introduced from the anaerobic tank (2); an aerobic tank (4) aerating the treated water introduced from the anoxic tank (3) to convert nitrogen into a nitric acid; a penton oxidation unit (10) performing penton oxidation of the treated water introduced from the aerobic tank (4); a settling tank (5) dividing the treated water introduced from penton oxidation unit (10) into a supernatant and sludge; a hot sterilization unit (20) sterilizing the treated water at high temperature by heat exchange; a floating filtration tank (1000) having an inlet unit (1010) through which the treated water is introduced, a floating filtration apparatus (1020) which is mounted on a treated water inlet space unit (1040), and an outlet unit (1030) through which the treated water is discharged; and a circulation guide unit (40) guiding the treated water in the inlet space unit (1040) of the floating filtration tank (1000) to the floating filtration apparatus (1020). Accordingly, the treated water is guided to be readily introduced into the floating filtration tank (1000), thereby enhancing the amount of the treated water and treatment efficiency.

Description

Advanced sewage treatment apparatus having the circulation guide unit of penton oxidation and treated water

The present invention relates to an advanced sewage treatment system, and more particularly, to quickly and effectively treat organic matter and nutrients (nitrogen and phosphorus) in wastewater with a low C/N ratio to purify wastewater, reduce the installation area of wastewater treatment facilities, and It relates to an advanced sewage treatment system having a circulation guide part for Fenton oxidation and treatment water that can be easily operated and managed.

Recently, as eutrophication of rivers, coastal seas and lakes (lakes and reservoirs) caused by nutrients from urban sewage, village sewage and sewage and wastewater is serious, it is necessary to treat nutrients as a countermeasure against this.

Methods for removing nitrogen and phosphorus from wastewater can be divided into physicochemical methods and biological methods. Physical and chemical methods require a lot of economical cost by using treatment facilities and chemicals.

Therefore, many economical biological treatment methods using microorganisms have been developed. However, these biological treatment methods have many difficulties in resolving the residence time, site area, nitrogen/phosphorus treatment efficiency, and ability to cope with fluctuations in input load in domestic wastewater treatment with a low C/N ratio.

In order to solve these problems, a process using media and a variation of the existing nitrogen/phosphorus treatment process (Badenpo, A 2 /O, UCT, VIP, etc.) is being developed. The nitrogen/phosphorus treatment process using the media can reduce the residence time, reduction of installation area, and sludge generation during wastewater treatment by using high-concentration microorganisms attached to the media. In particular, the treatment process using the floating filter media has a great advantage over other fluidized and fixed bed media because the unit cost of the filter media is low.

The most important thing in the operation of a treatment facility using floating media is the backwashing method. Currently, backwashing is performed using air, water, and propellers. The backwashing method using air requires a lot of power cost by injecting it at high pressure by a blower and a compressor, and the backwashing method using water has a disadvantage in that an excessive amount of water is consumed during backwashing. These backwashing methods using air or water must secure a wide lower space due to the expansion of the filter media. In addition, the backwashing method by the propeller is generally used together with water, and it requires a lot of power cost.

In general, treatment facilities using floating media are treatment facilities for removing organic matter and suspended matter, and nitrogen and phosphorus are only 20 to 30%, which is the level removed by the assimilation of microorganisms. Therefore, the processing facilities for organic matter, nitrogen and phosphorus using floating media are still insufficient. Furthermore, since it is not possible to check the real-time status of the filter tank including the floating filter media, it is difficult to take appropriate measures for each situation in a timely manner, resulting in a decrease in treatment efficiency.

An object of the present invention is to purify wastewater by quickly and effectively treating organic matter and nutrients (nitrogen and phosphorus) in wastewater with a low C/N ratio, reducing the installation area of the wastewater treatment facility, and enabling easy operation management. and to provide an advanced sewage treatment device having a circulation guide unit for the water to be treated.

The technical problem of the present invention as described above is achieved by the following means.

(1) flow control tank; anaerobic tank for removing phosphorus in the water to be treated flowing in from the flow rate control tank; an anaerobic tank for removing nitrate nitrogen from the treated water flowing in from the anaerobic tank; an aerobic tank for nitrifying nitrogen by aeration of air into the water to be treated introduced from the anaerobic tank; a Fenton oxidation unit for Fenton oxidation treatment of the water to be treated flowing in from the aerobic tank; a sedimentation tank for separating the treated water flowing in from the Fenton oxidation unit into a supernatant and sludge; a high-temperature sterilization unit for high-temperature sterilization of the water to be treated by heat exchange; a flotation filtration tank having an inlet through which the water to be treated is introduced, a flotation filtration device mounted on the inlet space for the irrigated water, and an outlet through which the water to be treated is discharged; and a circulation guide part for guiding the water to be treated in the inflow space of the flotation filtration tank to the flotation filtration device;

The inlet of the flotation filtration tank introduces the water to be treated into the upper end of one side of the inlet space, and the outlet is provided at the upper end of the other side of the inlet and discharges it, and the flotation filtration device is located on the other side of the inlet to be connected to the outlet and flows in A floating storage space in which the water to be treated introduced into the space is stored is formed on one side of the space, and the lower end of the floating storage space into which the to-be-treated water is introduced is provided to be spaced apart from the bottom of the inflow space,

The circulation guide portion is provided in the central portion of one side of the flotation filtration device, a first circulation guide portion for circulating the water to be treated flowing in through the inlet to one side; and a second circulation guide part provided in the central part of the inner wall of one side of the inlet space to correspond to the first circulation guide part and circulating the water to be treated by the first circulation guide part to the upper side and the lower side. Advanced sewage treatment device having a circulation guide part of treated water.

(2) in (1) above,

The first circulation guide part is formed in a certain arc so that the central part protrudes to one side, and the upper and lower surfaces are concave toward the other side,

The second circulation guide portion, the central portion of the advanced sewage treatment apparatus having a circulation guide portion of the water to be treated, characterized in that the central portion is formed in a predetermined arc so that the upper and lower surfaces are concave toward one side.

(3) in (2) above,

The second circulation guide part 42 is positioned above the first circulation guide part 41 and guides along the upper surface of the first circulation guide part 41 to circulate the circulated water to the second circulation guide part 42 . ) is guided along the lower surface of the advanced sewage treatment device having a circulation guide part of the water to be treated, characterized in that it is circulated.

(4) In the above (1), the flotation filtration device,

a filtration tank having an inlet filtration net mounted on the bottom and an exhaust filtration net mounted on one side of the top, and accommodating a floating filter medium therein to filter the water to be treated; a floating filter medium accommodated in the filtration tank and removing contaminants while floating along with the water to be treated; a first propeller mounted on the upper first side of the filtration tank to move the water to be treated to a second side opposite to the first propeller; a second propeller mounted on the second side of the lower part of the filtration tank to move the water to be treated to the opposite side of the first side; an ultrasonic oscillator mounted on the first lower side of the filtration tank and radiating ultrasonic waves to the floating filter medium that is moved together with the water to be treated moved by the second propeller; and a guide bulkhead that is formed to be spaced apart from the second side wall in the filtration tank and guides the water to be treated and the floating filter medium to circulate downward.

(5) in (4) above,

The first propeller, the second propeller, and the ultrasonic oscillator are advanced sewage treatment apparatus having a circulation guide part of the target water capable of real-time monitoring, characterized in that it is accommodated in the side wall inner receiving portion.

(6) in (4) above,

At least one oxygen supply unit is mounted in the vertical direction inside the guide partition wall, and the oxygen supply unit is composed of an oxygen supply pipe and an oxygen supply nozzle to remove the descending floating filter media and contaminants contained in the water to be treated. Advanced sewage treatment device having a circulation guide part of the water to be treated.

According to the present invention, the effect of purifying wastewater by quickly and effectively treating organic matter and nutrients (nitrogen and phosphorus) in wastewater with a low C/N ratio, reducing the installation area of a wastewater treatment facility, and making operation management easier to provide.

1 is an overall configuration diagram of an advanced sewage treatment apparatus according to the present invention.
2 is a detailed configuration diagram of the Fenton oxidation unit according to the present invention.
3 is a detailed configuration diagram of the main supply unit according to the present invention.
4 is a detailed configuration diagram of a fixed housing according to the present invention.
5 is a detailed configuration diagram of a reaction tank according to another embodiment according to the present invention.
6 is a detailed configuration diagram of the high-temperature sterilization unit, the circulation guide unit and the floating filtration tank according to the present invention.
7 is a detailed configuration diagram of the flotation filtration device according to the present invention.
8 is a detailed configuration diagram of a flotation filtration device further provided with a second oxygen supply unit and a filter membrane according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, one of ordinary skill in the art to which the present invention pertains will recognize that the present invention may be practiced without these specific details.

In some cases, well-known structures and devices may be omitted or shown in block diagram form focusing on core functions of each structure and device in order to avoid obscuring the concept of the present invention.

Throughout the specification, when a part is said to "comprising or including" a certain component, it does not exclude other components unless otherwise stated, meaning that other components may be further included. do. In addition, the term “…unit” described in the specification means a unit that processes at least one function or operation. Also, "a or an", "one", "the" and like related terms are used differently herein in the context of describing the invention (especially in the context of the following claims). Unless indicated or clearly contradicted by context, it may be used in a sense including both the singular and the plural.

In describing the embodiments of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the advanced sewage treatment apparatus of the present invention has an anaerobic tank 2 that removes phosphorus in the target water flowing in from the flow rate control tank 1, and the quality of the target water flowing in from the anaerobic tank 2 An anoxic tank (3) for removing acidic nitrogen, an aerobic tank (4) for nitrifying nitrogen by aeration of air into the treated water flowing in from the anoxic tank (3), Fenton oxidation treatment for the target water flowing in from the aerobic tank (4) A Fenton oxidation unit 10 for oxidizing the Fenton, a sedimentation tank 5 for separating the water to be treated from the Fenton oxidation unit 10 into a supernatant and sludge, a high-temperature sterilization unit 20 for sterilizing the supernatant by heat exchange , and a floating filtration tank 1000 and a circulation guide unit 40 .

In the present invention, the configuration of the device except for the Fenton oxidation unit 10, the high-temperature sterilization unit 20, the floating filtration tank 1000 and the circulation guide unit 40 may be used as it is known. Hereinafter, the high-temperature sterilization unit and the floating filtration tank will be mainly described, and detailed descriptions of other specific device configurations will be omitted.

As shown in FIGS. 2 to 5, the Fenton oxidation unit 10 includes a reaction tank 100, a wastewater supply unit 200, a Fenton oxide supply unit 300, a main supply unit 400, crystals 500, and treated water. It includes a discharge unit 600 , a sediment discharge unit 700 , a circulation unit 800 , and a Fenton filter membrane 900 .

The reaction tank 100 has a reaction space part 110 formed therein, and the wastewater supply part 200 is provided to supply wastewater.

And the Fenton oxide supply unit 300 is provided to supply the Fenton oxide.

The main supply unit 400 is provided to supply the wastewater and Fenton oxide supplied from the wastewater supply unit 200 and the Fenton oxide supply unit 300 to the reactor 100 .

In addition, the crystals 500 are located in a large amount in the reaction space part 110 of the reaction tank 100 and are provided so that the sludge generated in the reaction process is attached to it while flowing in the wastewater supplied from the main supply part 400 .

The treated water discharge unit 600 is provided to discharge the treated water treated in the reaction tank 100 , and the sediment discharge unit 700 discharges the sedimented sludge among the sludge generated in the reaction process in the reaction tank 100 . provided for

According to the Fenton oxidation unit 10, the wastewater is introduced into the reaction space 110 of the reactor 100 and at the same time the Fenton oxide is supplied to treat the wastewater, and the sludge generated in the treatment process is crystallized. Attached to the 500, the sludge that is not attached is precipitated and discharged.

Accordingly, it is possible to improve the treatment efficiency of the wastewater, as well as reduce the amount of sludge generated and settling in the treatment process, thereby reducing the cost for the sludge treatment.

And the circulation unit 800 is provided to circulate a part of the treated water treated in the reaction space unit 110 to the main supply unit 400 .

The circulation unit 800 includes a circulation pipe 810 and a circulation pump 820 .

The inlet end of the circulation pipe 810 is connected to the reaction tank 100 , and the outlet end is connected to the main supply unit 400 .

In addition, the circulation pump 820 is for supplying a portion of the treated water to the lower end of the reaction space 110 through the circulation pipe 810 , and is supplied to the lower end of the reaction space 110 by the main supply unit 400 . do.

Also, the circulation unit 800 further includes a crystal washing unit 830 .

The crystal washing unit 830 is provided to separate the sludge from the crystals 500 transported together by storing the treated water moved through the circulation pipe 810 .

The crystal washing unit 830 includes a removal storage tank 831 , a removal filter network 832 , a centrifugal separation unit 833 , a crystal circulation unit 834 , and a washing sludge discharge unit 835 .

The stripping storage tank 831 temporarily stores the treated water containing the crystals 500 transferred through the circulation pipe 810 .

And the stripping filter network 832 is provided inside the stripping storage tank 831 to separate the crystals 500 from the transferred treated water and discharge them to one side.

The centrifugal separator 833 is provided to separate the sludge from the discharged crystals 500 caught in the stripping filter network 832 by centrifugal force.

In addition, the crystal circulation unit 834 is provided to transfer the crystals 300 from which the sludge is separated in the centrifugal separation unit 833 to the circulation pipe 810 .

The washing sludge discharge unit 835 is provided to discharge the sludge separated by the centrifugal separation unit 833 .

Accordingly, as the washed crystals 500 together with the circulated treated water are circulated to the Fenton oxidation unit 10, the removal efficiency of the sludge introduced into the Fenton oxidation unit 10 can be improved.

In addition, the Fenton filter film 900 is provided to prevent the crystals 500 of the reaction space 110 from being discharged to the treated water discharge unit 600 .

The Fenton filter film 900 includes a first Fenton filter film 910 and a second Fenton filter film 920 .

Only the liquid passes through the first Fenton filter membrane 910 , and the crystal 500 has micropores for filtering, and is provided at the upper end of the reaction space 110 .

In addition, the second Fenton filter membrane 920 is provided to be spaced apart from the lower side of the first Fenton filter membrane 910 by a predetermined interval, so that micropores larger than the first Fenton filter membrane 910 are formed, and crystals of a predetermined size together with the liquid ( 500) is provided to pass.

As for the crystals 500 that do not pass through the second Fenton filter membrane 920, it is natural that the sludge continues to adhere to the reaction space.

Here, the wastewater and the Fenton oxide material and the crystals 500 positioned between the first Fenton filter membrane 910 and the second Fenton filter membrane 920 are fed to the main supply unit 400 through the inlet end of the circulation pipe 800 . It is moved and circulated back to the reaction space unit 110 .

Accordingly, the wastewater treatment efficiency is further improved.

Here, as shown in FIG. 3 , the main supply unit 400 includes a supply plate 410 , a supply housing 420 , a spray hole 430 , a supply hole 440 , and a sediment movement unit 450 .

The supply plate 410 is provided at the lower end of the reaction space 110 of the reaction tank 100 .

In addition, the supply housing 420 is provided such that the supply space 422 is formed on the lower side of the supply plate 410 , and a plurality of injection holes 430 are provided in the supply plate 410 .

The supply hole 440 is provided to introduce the wastewater and Fenton oxide supplied from the wastewater supply 200 and the Fenton oxide supply 300 into the supply space 422 of the supply housing 420 .

And the sediment moving unit 450 is provided along the outer side of the supply plate 410 is provided so that the sludge that is precipitated in the reaction space unit 110 is moved to the lower side.

Looking at the operating state of the main supply unit 400, the wastewater and Fenton oxide supplied from the wastewater supply unit 200 and the Fenton oxide supply unit 300 are supplied to the supply space unit 422 through the supply hole 440. Thereafter, the wastewater is treated by being supplied to the reaction space 110 through the plurality of injection holes 430 .

In addition, a rotating part 450 for rotating the supply plate 410 is further included.

The rotating part 450 includes a rotating shaft 452 , a fixed housing 454 , and a rotating driving unit 456 .

The rotating shaft 452 is connected to the supply housing 420 rotated together with the supply plate 410 .

And the fixed housing 454 has a supply passage 455 formed therein, and is provided in the reactor 100 so that the supply housing 420 is rotatable.

The rotation driving unit 456 is provided to rotate the rotation shaft 452 .

Here, as shown in FIG. 4 , the fixed housing 454 includes a first fixed housing 4542 and a second fixed housing 4544 .

The first fixed housing 4542 has a first supply passage 4552 formed therein, and the second fixed housing 4544 has a second supply passage 4554 formed therein.

In other words, the wastewater of the wastewater supply unit 200 is supplied to the supply passage 4552 of the first fixed housing 4542 , and the wastewater is supplied to the first supply space 422a.

In addition, the Fenton oxide material of the Fenton oxide supply unit 300 is supplied to the second supply passage 4554 of the second fixed housing 4544 , and the Fenton oxide material is supplied to the second supply space portion 422b. .

In addition, as shown in FIG. 5 , the reaction tank 100 is provided with a partition wall 120 in the height direction therein to form the reaction space part 110 with the first reaction space part 112 and the second reaction space part 114 . partitioned by

And a large amount of crystals 500 are positioned in the second reaction space 114 .

Wastewater and Fenton oxide are supplied to the first reaction space 112 and the second reaction space 114 through the main supply unit 400 .

Accordingly, the wastewater is treated by Fenton oxide in the first reaction space 112 , and sludge generated in the process is precipitated.

Also, in the second reaction space 114 , the wastewater is treated with Fenton oxide, and the sludge generated in the process is treated with the crystals 500 .

In one embodiment, the reaction space unit 110 is partitioned by at least one or more partition walls 120 . When a plurality of reaction space units are partitioned, the first reaction space unit 112 and the second reaction space unit 114 are alternated. It is preferable to be arranged.

Of course, it is natural that the plurality of first reaction space parts 112 and the plurality of second reaction space parts 114 may be arranged adjacent to each other.

Here, the primary treated water subjected to Fenton oxidation in the first reaction space 112 is supplied to the second reaction space 114 by the circulation unit 800 to react with the Fenton oxide for secondary treatment.

Of course, after the primary treated water subjected to Fenton oxidation in any one of the first reaction spaces 112 is secondaryly treated in the second reaction space 114 , it is tertiary through the other first reaction space 112 . It is natural that it can be processed, and it may go through a further processing process.

Accordingly, it is possible to improve the treatment efficiency for wastewater, as well as reduce the amount of sediment, thereby reducing the cost of sediment treatment.

And as shown in Figure 6, the high-temperature sterilization unit 20 is installed in front of the floating filtration tank 1000, the inner tube 21 to which the water to be treated is transported, and the inner tube 22 surrounding the inner tube 22 and a high-temperature heating medium inside It consists of an outer tube 22 that flows and supplies high-temperature heat to the water to be treated in the inner tube.

The heating medium may be high-temperature steam, and is introduced into the space between the outer tube 22 and the inner tube through an external steam supply device (not shown) to flow. The inner tube 21 is a tube through which the supernatant separated from the settling tank 5 is transported. Heat is supplied by the heating medium flowing in the outer tube, thereby accelerating the decomposition of various organic substances and providing an effect of sterilizing microorganisms.

In addition, the flotation filtration tank 1000 includes an inlet 1010 , a flotation filtration device 1020 mounted in the inlet space 1040 , and an outlet 1030 .

Here, the inlet 1010 of the floating filtration tank 1000 introduces the water to be treated into the upper end of one side of the inlet space 1040 , and the outlet 1030 is provided at the upper end of the other side of the inlet space 1040 and discharged make it

And the flotation filtration device 1020 is located on the other side of the inlet space 1040 so as to be connected to the discharge unit 1030, the flotation storage space 1042 in which the treated water introduced into one side of the inlet space 1040 is stored. ) is formed, and the lower end into which the to-be-treated water of the floating storage space 1042 is introduced is provided so as to be spaced apart from the bottom surface of the inflow space 1040 .

In the present invention, a camera unit 1050 is installed on the upper portion of the floating filtration device 1020 . The camera unit 1050 may be a conventional surveillance camera to photograph the upper surface of the transparent upper plate 13 of the floating filtration device 1020.

Preferably, the microbubble supply unit (1060, 1061) is mounted on the lower portion of the flotation filtration device (120). The microbubble supply unit includes a microbubble supply pipe 1060 and a microbubble supply nozzle 1061, although not shown, the microbubble supply pipe 1060 is connected to an external microbubble generator to receive microbubbles.

When the microbubbles are supplied over the inlet filtration network 11 forming the lower surface of the floating filtration device 1020, the microbubbles promote the diffusion of contaminants contained in the water to be treated, so that the contact efficiency with the floating filter medium 14 is achieved. to promote

The rising microbubbles form a predetermined pattern when operating normally on the transparent top plate 13, but the pattern is observed well in a situation where it cannot operate normally (for example, a situation in which the floating filter media aggregates or does not move well). it won't happen The camera unit 1050 monitors this pattern in real time, and transmits the corresponding image to the situation analysis server 30, and after analysis, the real-time situation is automatically transmitted to the manager (mobile terminal, etc.).

In addition, the flotation filtration device 1020 according to the present invention is preferably mounted on one side inside the flotation filtration tank 1000, and the water to be treated is an inlet space that is the internal space of the flotation filtration tank 1000 through the inlet 1010. It is introduced into the 1040, and is discharged through the discharge unit 1030 via the floating filtration device 120 mounted on one side.

And the circulation guide unit 40 is provided to guide the water to be treated in the inlet space 1040 of the floating filtration tank 1000 to the floating filtration device 1020 .

Here, the inlet 1010 of the floating filtration tank 1000 introduces the water to be treated into the upper end of one side of the inlet space 1040, and the outlet 1030 is provided at the upper end of the other side of the inlet space 1040. discharge

In addition, the flotation filtration device 1020 is located on the other side of the inlet space 1040 so as to be connected to the discharge unit 1030 and the flotation storage space 1042 in which the water to be treated introduced into one side of the inlet space 1040 is stored. ) is formed, and the lower end into which the to-be-treated water of the floating storage space 1042 is introduced is provided so as to be spaced apart from the bottom surface of the inflow space 1040 .

Accordingly, the microbubbles generated by the microbubble supply units 1060 and 1061 and the water to be treated are introduced.

For this, the circulation guide part 40 includes a first circulation guide part 41 and a second circulation guide part 42 .

The first circulation guide unit 41 is provided in the central portion of one side of the flotation filtration device 1020 to circulate the water to be treated flowing in through the inlet 1010 to one side.

And the second circulation guide part 42 is provided in the central part of the inner wall of one side of the inflow space part 1040 so as to correspond to the first circulation guide part 41, and the to-be-treated water circulated by the first circulation guide part is supplied to the upper side or circulate downward.

The target water circulated along the lower surface of the second circulation guide part 42 can be easily introduced into the inlet part 1010 of the floating filtration tank 1000 .

Here, the first circulation guide part 41 is formed in a predetermined arc such that the central portion protrudes to one side, and the upper and lower surfaces are concave toward the other side.

And the second circulation guide portion 42 is formed in a predetermined arc such that the central portion protrudes to the other side, and the upper and lower surfaces are concave toward one side.

At this time, the second circulation guide part 42 is located above the first circulation guide part 41 and guides along the upper surface of the first circulation guide part 41 to circulate the water to be circulated to the second circulation guide part. It is guided along the lower surface of (42) and circulated.

In other words, the to-be-treated water guided along the upper surface of the first circulation guide part 41 is separated into upper and lower parts by the second circulation guide part 42 and circulated. ) can be moved to the lower side and easily introduced into the inlet 1010 .

In particular, it prevents aggregation of organic matter and the like by circulating the introduced water to be treated.

As shown in FIG. 7, the flotation filtration device 1020 includes a filtration tank 50 equipped with an inlet filtration network 11 and an exhaust filtration network 12, a flotation filter medium 14, a first propeller 15, and a second 2 includes a propeller 16 , an ultrasonic oscillator 17 , and a guide partition wall 60 .

As a preferred embodiment of the present invention, in the floating filter device 1020, the floating filter medium 14 is accommodated in the filtration tank 50, and the floating filter medium 14 is a filtration tank by forced convection together with the water to be treated. (50) circulates inside.

In the filtration tank 50 according to the present invention, an inflow filtration network 11 is mounted on the bottom so that the water to be treated flows into the inside in the direction from the bottom to the top. The inflow filtration network 11 is required to have a mesh structure of a size that prevents the inflow of water to be treated, but prevents the internal floating filter 14 from escaping.

In addition, a discharge filtering network 12 connected to the discharge unit 1030 is mounted on the upper side wall for discharging the treated water from the inside of the filtering tank 50 . Although the treated water is discharged to the discharge unit 1030 through the discharge filtering network 12, the floating filter medium 14 is required to have a mesh structure of a size so as not to be discharged.

The first propeller 15 is mounted on one side of the inside of the filtration tank 50 (hereinafter, referred to as “the first side”) at the upper end.

The first propeller 15 rotates by a motor (not shown) and flows the water to be treated (along with the levitation filter material 14) to the other side (hereinafter referred to as "second side") opposite to the horizontal direction. raise and transport

The water to be treated including the floating filter media 14 transferred to the second side by the first propeller 15 reaches the discharge filtration network 12, and some of it is discharged as treated water, and the floating filter media 14 moves downward by gravity or settling by forced convection.

The second propeller 16 is mounted at the lower end of the second side of the filtration tank 50 . The second propeller 16 is driven by a motor (not shown) to cause the flow of the floating filter media 14 settling together with the water to be treated in the opposite direction to the first side and circulate it.

In the present invention, the ultrasonic oscillator 17 is mounted at the lower end of the first side of the filtration tank 50 . The ultrasonic oscillator 17 emits ultrasonic waves toward the water to be treated and the floating filter medium 14 transferred by the second propeller 16 . When a large amount of contaminants are attached to the floating filter medium 14 to form a cake, the filtration efficiency is lowered, and thus the ultrasonic radiation may be performed at a predetermined period, for example, every backwashing process. In this process, the cake detached through ultrasonic radiation is sedimented downward by gravity and may be removed from the bottom of the floating filtration tank 1000 .

Preferably, a plurality of the first propeller 15, the second propeller 16, and the ultrasonic oscillator 17 may be installed at regular intervals according to the size of the flotation filtration tank, and the side wall inner receiving portions 15a, 16a, 17a ) are separately stored and protected, and their inlets are protected by filtration nets (15b, 16b, 17b).

Alternatively, the ultrasonic radiation may be continuously performed during the filtration process, which forms a vortex in the water to be treated flowing in from the lower portion, thereby greatly improving the contact efficiency of contaminants with the floating filter medium 14 . In this case, contaminants desorbed by ultrasonic waves are removed by sedimentation downward in the case of relatively large substances, or fine substances are resuspended and mixed with the incoming raw water and treated together. According to this process, contaminants are not easily attached to the floating filter media 14, so that it is possible to treat without a separate cleaning process for a long period of time.

Inside the filtration tank 50 of the present invention, the guide partition wall 60 is formed in a vertical direction, preferably spaced apart from the side wall of the second side at regular intervals. The guide bulkhead 60 guides the water to be treated and the floating filter medium 14 transferred to the second side by the operation of the first propeller 15 to move downward.

The guide partition wall 60 may be supported to be spaced apart from the second side wall and at least one supporter 61 .

Preferably, at least one oxygen supply part 62 is mounted in the vertical direction inside the guide partition wall 60 . The oxygen supply unit 62 includes an oxygen supply pipe 62a and an oxygen supply nozzle 62b mounted inside the guide partition wall. The oxygen supply unit 62 receives oxygen through an external oxygen supply cylinder or an oxygen supply device 70 such as a compressor.

Therefore, in the process of floating together with the water to be treated in the filtration tank 50, contaminants are adsorbed, and in the process of being guided downward by the guide partition wall 60, the oxygen microbubbles supplied from the oxygen supply unit 62 By oxidizing contaminants such as organic substances adsorbed by the oxidizing agent, the treatment efficiency of wastewater is further improved.

And, as shown in FIG. 8 , a second oxygen supply unit 64 is further provided on the sidewall of the second side facing the guide partition wall 60 to supply oxygen, so that the organic material adsorbed to the floating filter medium 14 . It can be treated by oxidizing contaminants such as

Since the second oxygen supply unit 64 has the same configuration as the oxygen supply unit 62 , a separate description thereof will be omitted.

On the other hand, a filter membrane 66 is further provided in the space between the guide partition wall 60 and the sidewall of the second side.

The filter membrane 66 is formed with a plurality of pores through which the floating filter medium 14 passes, and contaminants such as organic materials are adsorbed, so that the bulky floating filter medium 14 does not pass through and stagnates.

Accordingly, when contaminants such as organic materials are oxidized and removed by oxygen microbubbles supplied from the oxygen supply unit 62 and the second oxygen supply unit 64 , the target water newly introduced through the floating filter medium 14 is passed through. Contaminants, such as organic substances, contained in it can be adsorbed again.

And as shown in FIG. 6, it further includes a circulation guide control unit 80 for adjusting the amount of water to be treated that is guided to the floating filtration device 1020 by the circulation guide unit 40.

The circulation guide control unit 80 includes a circulation position control unit 81 , an inflow sensor 82 , a discharge sensor 83 , a storage sensor 84 , and a circulation guide control control unit 85 .

The circulation position adjusting unit 81 is provided to adjust the respective positions of the first circulation guide unit 41 and the second circulation guide unit 42 .

In addition, the inflow sensor 82 is provided to measure the amount of water to be treated introduced through the inlet 1010 .

The discharge sensor 83 is provided to measure the amount of water to be treated discharged through the discharge unit 1030 .

And the storage amount sensor 84 is provided to measure the amount of the target water stored in the inlet space (1040).

The circulation guide control control unit 85 receives the signals of the inflow sensor 82, the discharge sensor 83, and the storage sensor 84 to control the circulation position control unit 81, and is guided to the floating filter 1020. It is provided to control the amount of water to be treated.

According to this circulation guide control unit 80, according to the inflow of the target water, it is possible to adjust the processing amount by adjusting the amount of the target water flowing into the filtration tank 50 of the flotation filtration device 1020 to improve work efficiency. can be improved

And the advanced sewage treatment device further includes a floating sterilization unit (90).

The floating sterilization unit 90 is provided to sterilize the inlet space unit 1040 .

The floating sterilization unit 90 includes a sterilization lighting unit 91 and a photocatalyst unit 92 .

The sterilization lighting unit 91 is provided in the floating filtration tank 1000 to irradiate the inlet space 1040 with illumination, and at least one is provided.

In addition, the photocatalyst 92 is formed in the inlet space 1040 to respond to the light irradiated from the sterilization lighting unit (91).

By operating the sterilization lighting unit 91 and irradiating light having a sterilization function to the surroundings, the inlet space unit 1040 is sterilized together with the photocatalyst unit 92 .

Here, the sterilization lighting unit 91 irradiates any one or more of UV and 405 nm wavelength with a plurality of LEDs, and UV is irradiated with a short wave (C) with a wavelength of 220 to 260 nm.

This 405nm wavelength has an excellent sterilization effect, which is the same as the solar sterilization effect of sunlight, and can sterilize E. coli.

And the photocatalyst part 92 is titanium dioxide (TiO2), which is applied to the inlet space part 1040, and is preferably also applied to the circulation guide part 40 and the floating filtration device 1020.

Titanium dioxide (TiO2), which is the photocatalyst part 92, has a very large oxidizing power, and has an antibacterial action, odor removal, and sterilization action.

In particular, the photocatalyst unit 92 made of titanium dioxide (TiO2) may react with UV or 405 nm wavelength of the sterilization lighting unit 91 to remove sterilization, viruses, and the like.

According to the configuration of the present invention as described above, by adopting a method in which the floating filter media 14 circulates inside, it is possible to accommodate a large amount compared to the existing floating filtration method, so that the processing efficiency can be greatly improved.

Of course, the size and optimal rotation speed of the first propeller 15 and the second propeller 16 may be set differently depending on the viscosity, amount, or content of the received flotation media, etc. of the water to be treated.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

50: filtration tank 14: floating media
15: first propeller 16: second propeller
17: ultrasonic oscillator 60: guide bulkhead
1000: floating filtration tank 20: high-temperature sterilization unit
30: situation analysis server 40: circulation guide unit

Claims (4)

flow control tank (1);
anaerobic tank (2) for removing phosphorus in the water to be treated flowing in from the flow rate control tank (1);
an anaerobic tank (3) for removing nitrate nitrogen in the treated water flowing in from the anaerobic tank (2);
an aerobic tank (4) for nitrifying nitrogen by aeration of air into the water to be treated introduced from the anoxic tank (3);
a Fenton oxidation unit 10 for Fenton oxidation treatment of the water to be treated flowing in from the aerobic tank 4;
a sedimentation tank (5) for separating the water to be treated from the Fenton oxidation unit (10) into a supernatant and sludge;
a high-temperature sterilization unit 20 for high-temperature sterilization of the water to be treated by heat exchange;
A flotation filtration tank 1000 having an inlet 1010 into which the WTBT is introduced, a flotation filtration device 1020 mounted on the WTBT inlet space 1040, and a discharge part 1030 from which the WTBT is discharged; and
Circulation guide part 40 for guiding the water to be treated in the inlet space 1040 of the flotation filtration tank 1000 to the flotation filtration device 1020;
The Fenton oxidation unit 10,
a reaction tank 100 having a reaction space therein; a wastewater supply unit 200 provided to supply wastewater;
Fenton oxide supply unit 300 provided to supply the Fenton oxide;
a main supply unit 400 provided to supply the wastewater and Fenton oxide supplied from the wastewater supply unit 200 and the Fenton oxide supply unit 300 to the reactor 100;
The crystals 500 are located in a large amount in the reaction space 110 of the reaction tank 100 and are provided to attach the sludge generated in the reaction process while flowing in the wastewater supplied from the main supply unit 400;
a treated water discharge unit 600 provided to discharge the treated water treated in the reaction tank 100;
a sediment discharge unit 700 provided for discharging precipitated sludge among sludge generated in the reaction process in the reaction tank 100;
a circulation unit 800 provided to circulate a portion of the treated water treated in the reaction space unit 110 to the main supply unit 400; and
and a Fenton filter membrane 900 provided to prevent the crystals 500 of the reaction space 110 from being discharged to the treated water discharge unit 600;
The circulation unit 800,
a circulation pipe 810 having an inlet end connected to the reactor 100 and an outlet end connected to the main supply unit 400;
The circulation pump 820 is for supplying a portion of the treated water to the lower end of the reaction space 110 through the circulation pipe 810 , and is supplied to the lower end of the reaction space 110 by the main supply unit 400 . ; and
Sewage having a circulation guide part for Fenton-oxidized and untreated water including; a crystal washing unit 830 to store the treated water moved through the circulation pipe 810 and separate the sludge from the crystals 500 transported together advanced processing equipment. According to claim 1,
The flotation filtration device 1020 is located on the other side of the inlet space 1040 so as to be connected to the outlet 1030 and the flotation storage space 1042 in which the treated water introduced into one side of the inlet space 1040 is stored. ) is formed, and the lower end into which the to-be-treated water of the floating storage space 1042 flows is provided so as to be spaced apart from the bottom surface of the inflow space 1040,
Circulation guide unit 40,
a first circulation guide part 41 provided in the central part of one side of the flotation filtration device 1020 to circulate to one side the water to be treated flowing in through the inlet 1010; and
A second circulation guide provided in the central portion of the inner wall of one side of the inlet space portion 1040 to correspond to the first circulation guide portion 41 to circulate the water to be treated, which is circulated by the first circulation guide portion, to the upper side and the lower side. Advanced sewage treatment apparatus having a circulation guide part for Fenton oxidation and target water, including a part (42). delete delete

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