KR102399894B1 - Nitrogen treatment system using low power consumption and sticky media - Google Patents

Abstract

Nitrogen treatment system using low-power stirring and string media according to an embodiment of the present invention is an anaerobic tank 100 for denitrification of nitrate nitrogen of raw water (1) introduced from the outside; a first aeration tank 200 for primary purification of the raw water 1 by supplying oxygen to the denitrified raw water 1 through the anoxic tank 100; Oxygen is supplied to the firstly purified raw water (1) through the first aeration tank (200) to secondaryly purify the primary purified raw water (1) to generate treated water (2) a second aeration tank 300 for discharging to; Installed in the anaerobic tank 100, the first aeration tank 200, and the second aeration tank 300, respectively, the suspended substances and organic substances of the raw water 1 are sucked together with the raw water 1, and then a water flow is generated to generate suspended substances and Stirring unit 400 for moving the organic material downward; After moving to the lower side through the stirring unit 400, the string media unit 500 that purifies the suspended substances and organic substances of the raw water (1) discharged from the stirring unit 400 through adsorption and biological oxidative decomposition by microorganisms (500) ; Before being discharged from the second aeration tank 300, the circulation unit 600 for circulating the treated water (2) anaerobic tank (100); and when the nitrate nitrogen concentration of the raw water 1 flowing into the first aeration tank 200 and the second aeration tank 300 is equal to or greater than a preset concentration, the first aeration tank 100 and the second aeration tank 300 operate as an anaerobic tank It includes; a control unit 700 that controls to be.

Description

Nitrogen treatment system using low power agitation and string media {Nitrogen treatment system using low power consumption and sticky media}

The present invention relates to a nitrogen treatment system using low-power stirring and string media, and more particularly, by installing a low-power stirring unit and string media in an anoxic tank and an aeration tank, respectively, and operating the aeration tank as an anaerobic tank depending on the situation to purify raw water. It relates to a nitrogen process treatment system that can be

In modern society, industrialization and urbanization are accelerating day by day, and environmental pollution caused by it is emerging as a big problem to be solved in modern society. In particular, as wastewater such as sewage, wastewater, and sewage discharged from homes or factories among environmental pollutants contains components harmful to the human body, such as nitrogen, phosphorus, and organic matter, a facility for purifying and discharging it is essential. .

Advanced treatment refers to a treatment method that removes various organic substances such as phosphorus and nitrogen, as well as high-concentration nutrients, contained in such wastewater. When it is purified, it is called advanced treatment. Such advanced treatment includes physicochemical treatment methods such as coagulation precipitation method, activated carbon adsorption method, ozone oxidation method, membrane separation method, and electrolytic treatment method, and biological treatment method such as biological denitrification and dephosphorization method. Among these advanced treatment methods, the biological treatment method is widely used at home and abroad as a major treatment process for treating wastewater because it has more cost-effective treatment efficiency than the physical and chemical treatment method.

And, in the wastewater treatment system based on the biological treatment method, an anoxic tank in which nitrogen is released and organic matter is removed from wastewater and an aeration tank (aerobic tank) in which organic matter is removed using oxygen are configured. Although this wastewater treatment system removes nitrogen and organic matter contained in wastewater based on the conventional biological treatment method, nitrogen in biologically treated wastewater with a low load of nitrogen and organic matter shows different properties depending on the winter and summer seasons. , there was a problem in that it was difficult to continuously reduce wastewater annually.

In addition, an agitator such as a propeller is provided to agitate the wastewater in the anaerobic tank or the aeration tank. However, in the case of wastewater with a low specific gravity, stirring by a conventional stirrer stirs only the wastewater adjacent to the agitator, so sufficient stirring efficiency cannot be obtained and sludge sedimentation Or there was a problem that the dead zone was generated.

On the other hand, as a prior art for a wastewater treatment system based on a biological treatment method using a string contact oxidation tank that removes organic matter through adsorption and oxidative decomposition by microorganisms, Republic of Korea Utility Model Publication No. 20-0257303 (Contaminated rivers and lakes Purification device) and Republic of Korea Deungreuk Patent Publication No. 10-1393533 (a method of purifying polluted rivers and lakes using a draft tube-type string-type microorganism contact filter media purification device to which various diffusion methods are applied) have been disclosed.

The prior art is a device based on a biological treatment method that removes organic matter from wastewater through adsorption and oxidative decomposition by microorganisms using a string media, but it is difficult to treat wastewater showing different nitrogen properties depending on the winter and summer seasons, and it is difficult to use the string media. The unit used did not have a stirrer, so there was a problem in that the treatment efficiency of organic matter suspended in the wastewater was lowered.

Republic of Korea Registered Utility Model Publication No. 20-0257303 Republic of Korea Deungreuk Patent Publication No. 10-1393533

The present invention has been devised to solve the above problems. In order to stably treat the nitrogen in the raw water, the aeration tank is also operated as an anoxic tank depending on the nitrogen concentration of the raw water. An object of the present invention is to provide a nitrogen treatment system using a low-power stirring and string-shaped media in which a low-power stirring unit and a string-shaped media are respectively installed in the aeration tank.

And in the present invention, in order to purify raw water, the suspended substances and organic substances, which are pollutants of raw water, are moved to the lower side of the anoxic tank and the aeration tank through the stirring unit, and then the suspended substances and organic substances moved to the lower side are filled in a large amount in the string media. An object of the present invention is to provide a nitrogen treatment system using a low-power agitation and string media for adsorption and oxidative decomposition.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

As a technical means for achieving the above object, the nitrogen treatment system using low-power stirring and string media according to an embodiment of the present invention is an anaerobic tank ( 100); a first aeration tank 200 for primary purification of the raw water 1 by supplying oxygen to the denitrified raw water 1 through the anoxic tank 100; Oxygen is supplied to the firstly purified raw water (1) through the first aeration tank (200) to secondaryly purify the primary purified raw water (1) to generate treated water (2) a second aeration tank 300 for discharging to; Installed in the anaerobic tank 100, the first aeration tank 200, and the second aeration tank 300, respectively, the suspended substances and organic substances of the raw water 1 are sucked together with the raw water 1, and then a water flow is generated to generate suspended substances and Stirring unit 400 for moving the organic material downward; After moving to the lower side through the stirring unit 400, the string media unit 500 that purifies the suspended substances and organic substances of the raw water (1) discharged from the stirring unit 400 through adsorption and biological oxidative decomposition by microorganisms (500) ; Before being discharged from the second aeration tank 300, the circulation unit 600 for circulating the treated water (2) anaerobic tank (100); and when the nitrate nitrogen concentration of the raw water 1 flowing into the first aeration tank 200 and the second aeration tank 300 is equal to or greater than a preset concentration, the first aeration tank 100 and the second aeration tank 300 operate as an anaerobic tank It includes; a control unit 700 that controls to be.

In addition, the stirring unit 400 has one or more suction ports 411 such that suspended substances and organic substances of one of the raw water 1, the denitrified raw water 1, and the primary purified raw water 1 are sucked. formed suction member 410; The upper part is connected to the suction member 410, and is opened so that suspended substances and organic substances of the raw water 1 sucked through the suction port 411 are introduced into the inside, and suspended substances and organic substances of the introduced raw water 1 are introduced. The duct 420 in which the outlet 421 is formed at the bottom so that it is discharged; and a water current generating means 430 installed in the duct 420 and operated by the control unit 700 to generate a water flow so that the raw water 1 containing suspended substances and organic substances introduced into the duct 420 moves downward. ); may be included.

In addition, the string media part 500 is a string media membrane 510 filled with a large amount of microorganisms for adsorbing and oxidatively decomposing suspended substances and organic substances of the raw water (1) discharged from the stirring unit 400; And it is installed vertically between the string-like media membrane 510 to prevent the string-like media membrane 510 from being separated, and the tube through hole 521 so that the suspended substances and organic substances of the raw water 1 are adsorbed to the string-like media membrane 510. ) in which one or more tubes 520 are formed; may include.

And the tube 520, the oxygen supplied from the first aeration tank 200 or the second aeration tank 300 is protruded from the side wall forming the tube through hole 521 in a direction orthogonal to the side wall toward the string-like media membrane 510. Guide plate 522 for guiding the movement and controlling the amount of suspended matter and organic matter flowing into the string media membrane 510 by opening or closing the tube through hole 521 by the control unit 700; can do.

In addition, in the nitrogen treatment system using low-power stirring and string media according to an embodiment of the present invention, the control unit 700 is nitrate nitrogen of the raw water (1) flowing into the first aeration tank 200 and the second aeration tank 300. A sensor unit 800 for measuring the nitrate nitrogen concentration of the raw water 1, each installed inside the first aeration tank 200 and the second aeration tank 300 to determine whether the concentration is greater than or equal to the preset concentration; may include more.

And the sensor unit 800, the control unit 700, the raw water ( The ammonia concentration of 1) can be measured.

In addition, the anaerobic tank 100 is provided with a stirring unit 400 and a pair of string media 500 therein, and one side wall adjacent to the first aeration tank 200 and a pair of string media units 500 of An anaerobic tank unit 110 in which the interior is partially partitioned through the first inner wall 111 extending from the upper side to the lower side located between the one side wall and the adjacent string media part 500; and a raw water inlet pipe 120 passing through the other side wall of the anaerobic tank unit 110 and allowing the raw water 1 introduced from the outside to flow into the anaerobic tank unit 110 .

And the first aeration tank 200, the stirring unit 400 and the pair of string media 500 are installed therein, the second aeration tank 300 and adjacent one side wall and a pair of string media 500) a first aeration tank unit 210 in which the inside is partially partitioned through a second inner wall 211 extending from the upper side to the lower side, which is located between the one side wall and the adjacent string media part 500; A first connection that passes through one wall of the anaerobic tank unit 110 and the other wall of the first aeration tank unit 210 and allows the denitrified raw water 1 from the anaerobic tank 100 to flow into the first aeration tank unit 210 . tube 220; and a first aeration unit ( 230); may include.

In addition, when the concentration of ammonia nitrogen in the denitrified raw water 1 is greater than or equal to a preset concentration, the control unit 700 controls the first diffuser 230 to supply oxygen to the denitrified raw water 1 . can

And the second aeration tank 300, the stirring unit 400 and a pair of string-shaped media 500 are installed therein, one side wall through which the treated water discharge pipe 340 passes, and a pair of string-shaped media portions 500 ) of the second aeration tank unit 310, the inside of which is partially partitioned through the third inner wall 311 extending from the upper side to the lower side, which is located between the one side wall and the adjacent string media part 500; Penetrating through one side wall of the first aeration tank 110 and the other wall of the second aeration tank unit 210 , the primary purified raw water 1 from the first aeration tank 100 flows into the second aeration tank unit 310 a second connector 320; The second aeration unit 330 is provided below the second aeration tank unit 310 and supplies oxygen to the primary purified raw water 1 flowing into the second aeration tank unit 310 through the second connection pipe 320 . ); and a treated water discharge pipe 340 passing through one side wall of the second aeration tank unit 310 and allowing the treated water 2 to be discharged from the second aeration tank unit 310 to the outside.

In addition, when the concentration of ammonia nitrogen in the primary purified raw water 1 is equal to or greater than a preset concentration, the control unit 700 controls the second diffuser 330 to supply oxygen to the primary purified raw water 1 . can

According to an embodiment of the present invention, by operating the aeration tank as an anoxic tank according to the nitrogen concentration of the raw water, it is possible to efficiently treat the nitrogen of the raw water having different nitrogen properties according to the winter and summer seasons.

And according to an embodiment of the present invention, after the stirring unit moves the suspended substances and organic substances of the raw water to the lower side of the unit, by adsorbing and oxidatively decomposing the suspended substances and organic substances moving to the lower side of the unit through the string media part , it is possible to efficiently treat suspended matter and organic matter while preventing sedimentation of suspended matter and organic matter in raw water.

In addition, according to an embodiment of the present invention, the dead zone in the unit can be prevented from being generated by the stirring unit sucking raw water together with the suspended substances and organic substances to treat the suspended substances and organic substances.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

1 is a view for showing the configuration of a nitrogen treatment system using a low-power stirring and string media according to an embodiment of the present invention.
2 is a view for showing the detailed configuration of the stirring unit and the flow of raw water.
3 is a view for showing the detailed configuration and flow of raw water of the string media part.
4 is a diagram illustrating a control configuration of a control unit.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the right (the scope of the present invention) should not be construed as being limited by the embodiment described in the text. That is, the embodiment is subject to various changes Since this is possible and can take various forms, it should be understood that the scope of the present invention includes equivalents that can realize the technical idea.In addition, the object or effect presented in the present invention must include all of the object or effect of the present invention. It is not meant to include only such effects, so the scope of the present invention should not be construed as being limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprise" or "have" are not intended to refer to the specified feature, number, step, action, component, part or any of them. It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms defined in general used in the dictionary should be interpreted as having the same meaning in the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the nitrogen treatment system 10 using a low-power stirring and string media according to an embodiment of the present invention.

1 is a view for showing the configuration of a nitrogen treatment system using a low-power stirring and string media according to an embodiment of the present invention, FIG. 2 is a view for showing the detailed configuration of the stirring unit and the flow of raw water, FIG. 3 is a view for showing the detailed configuration and flow of raw water of the string media part, Figure 4 is a view for showing the control configuration of the control unit.

Referring to Figure 1, the nitrogen treatment system 10 using low-power agitation and string media according to an embodiment of the present invention is an anaerobic tank 100 to treat nitrogen of raw water 1 based on low-power stirring and string media. , the first aeration tank 200 , the second aeration tank 300 , the stirring part 400 , the string media part 500 , the circulation part 600 , the control part 700 and the sensor part 800 are configured to include.

The anaerobic tank 100 is configured for denitrification of nitrate nitrogen in the raw water 1 introduced from the outside, and includes an anaerobic tank unit 110 and a raw water inlet pipe 120 .

The anaerobic tank unit 110 is provided with a first inner wall 111 having a stirring unit 400 and a pair of string-shaped media units 500 installed therein, and extending from the upper side to the lower side to partially partition the inside. .

The first inner wall 111 is a side wall of the anaerobic tank unit 110 through which a first connector 220 to be described later passes and a pair of string media part 500 adjacent to the one side wall of the string media part 500. provided between

The first inner wall 111 is provided so that the inside of the anaerobic tank unit 110 is partially partitioned, so that the raw water 1 flowing into the anaerobic tank unit 110 through the raw water inlet pipe 120 is stirred with the stirring unit 400 . This is to prevent discharge to the first aeration tank 200 through the first connection pipe 220 to be described later by the shortest distance without going through a treatment process by the string-like media part 500 .

The raw water inlet pipe 120 passes through the other side wall of the anaerobic tank unit 110 so that the external raw water 1 flows into the anaerobic tank unit 110 . Here, the external raw water 1 may refer to wastewater containing nitrogen, which is biologically treated with a low load of nitrogen and organic matter.

The raw water inlet pipe 120 may be provided with an opening/closing means (eg, an on/off valve) for blocking the inflow of the raw water 1 until the inflow of the raw water 1 or the denitrification process of the anoxic tank 100 is completed. there is.

The first aeration tank 200 is a configuration for primary purification of the denitrified raw water 1 by supplying oxygen to the denitrified raw water 1 through the anoxic tank 100. The first aeration tank unit 210, the first It consists of a connector 220 and a first diffuser 230 .

The first aeration tank unit 210 has a stirring unit 400 and a pair of string-shaped media units 500 installed therein, and a second inner wall 211 extending from the upper side to the lower side to partially partition the inside. provided

The second inner wall 211 is a side wall of the first aeration tank unit 210 through which a second connection pipe 320, which will be described later, penetrates, and a string media part 500 adjacent to the one side wall among the pair of string media parts 500 . ) is provided between

The provision of the second inner wall 211 allows the interior of the first aeration tank unit 210 to be partially partitioned, so that the first aeration tank unit 210 flows into the first aeration tank unit 210 from the anaerobic tank unit 110 through the first connection pipe 220 . The denitrified raw water 1 is discharged to the second aeration tank 300 through the second connection pipe 320 to be described later in the shortest distance without going through a treatment process by the stirring unit 400 and the string-shaped media unit 500 . to prevent it from becoming

The first connection pipe 220 passes through one side wall of the anaerobic tank unit 110 and the other side wall of the first aeration tank unit 210 and the denitrified raw water 1 discharged from the anaerobic tank unit 110 is the first aeration tank unit (210) to be introduced into.

This first connection pipe 220 is closed during the denitrification process of the raw water 1 from the anoxic tank 100, and is opened when the denitrification process of the raw water 1 from the anoxic tank 100 is finished. .

To this end, the first connection pipe 220 has an opening/closing means (eg, an on/off valve) operated by the control unit 700 to block the movement of the denitrified raw water 1 or the movement of the denitrified raw water 1 . It would be desirable to have one available.

The first aeration unit 230 is provided below the first aeration tank unit 210 , and denitrified raw water introduced into the first aeration tank unit 210 by spraying air toward the upper side of the first aeration tank unit 210 . Make sure that (1) is supplied with oxygen.

Specifically, the first aeration unit 230 injects oxygen-containing air toward the lower side of the stirring unit 400 , thereby providing oxygen to the denitrified raw water 1 that is moved to the lower side of the first aeration tank unit 210 . is supplied, and the oxidation of the denitrified raw water (1) is promoted.

In addition, after the first aeration unit 230 is moved downward by the stirring unit 400 and discharged to the lower side of the first aeration unit 210 , oxygen is discharged toward the lower side of the pair of string-shaped media units 500 . By spraying the contained air, oxygen is supplied to the denitrified raw water 1 flowing into the pair of string media 500, and the oxidation of the denitrified raw water 1 is promoted.

Furthermore, the first diffuser unit 230 is moved downward by the stirring unit 400 by spraying air toward the lower side of the pair of string-shaped media units 500 , and then the first from the stirring unit 400 . The denitrified raw water 1 discharged to the lower side of the aeration tank unit 210 may be guided to move toward the pair of string media 500 .

The second aeration tank 300 is configured for secondary purification of the firstly purified raw water 1 by supplying oxygen to the firstly purified raw water 1 through the first aeration tank 200, and the second aeration tank unit 310 ), a second connection pipe 320 , a second diffuser 330 , and a treated water discharge pipe 340 .

The second aeration tank unit 310 has a stirring unit 400 and a pair of string media units 500 installed therein, and a third inner wall 311 extending from the upper side to the lower side to partially partition the inside. provided

The third inner wall 311 is between one side wall of the second aeration tank unit 310 through which the treated water discharge pipe 340 passes and the one side wall and the adjacent string media part 500 among the pair of string media part 500 . is provided in

The provision of the third inner wall 311 allows the inside of the second aeration tank unit 210 to be partially partitioned, and thus from the first aeration tank unit 210 to the second aeration tank unit 310 through the second connection pipe 320 . In order to prevent the incoming primary purified raw water (1) from being discharged to the outside through the treated water discharge pipe 340 in the shortest distance without going through a treatment process by the stirring unit 400 and the string media unit 500 am. Here, the outside may be a facility and device from which the treated water 2 is discharged or a facility and device for storing the treated water 2 .

The second connection pipe 320 penetrates one side wall of the first aeration tank unit 210 and the other side wall of the second aeration tank unit 310 and is discharged from the first aeration tank unit 210. Primary purified raw water (1) is introduced into the second aeration tank unit 310 .

This second connection pipe 320 is closed while the primary purification process of the raw water 1 denitrified from the first aeration tank 200 is performed, and 1 of the raw water 1 denitrified from the first aeration tank 200 is closed. It would be desirable to be open when the car purification process is finished.

To this end, the second connection pipe 320 has an opening/closing means (eg, an on/off valve) that is operated by the control unit 700 to block the movement of the primary purified raw water 1 or the primary purified raw water 1 . ) would be preferable.

The second aeration unit 330 is provided below the second aeration tank unit 310 and injects air toward the upper side of the second aeration tank unit 310 to flow into the second aeration tank unit 310 . Oxygen is supplied to the raw water (1).

Specifically, the second aeration unit 330 injects oxygen-containing air toward the lower side of the stirring unit 400 , thereby providing oxygen to the primary purified raw water 1 that is moved to the lower side of the second aeration unit 310 . is supplied, and the oxidation of the primary purified raw water (1) is promoted.

And after the second aeration unit 330 is moved downward by the stirring unit 400 and discharged to the lower side of the second aeration unit 310, oxygen is contained toward the lower side of the pair of string-shaped media units 500. By spraying the air, oxygen is supplied to the primary purified raw water 1 flowing into the pair of string media 500, and the oxidation of the primary purified raw water 1 is promoted.

Furthermore, the second diffuser unit 330 is moved to the lower side by the stirring unit 400 by spraying air toward the lower side of the pair of string-shaped media units 500 , and then from the stirring unit 400 to the second The primary purified raw water 1 discharged to the lower side of the aeration tank unit 310 may be guided to move toward the pair of string media 500 .

The treated water discharge pipe 340 passes through one side wall of the second aeration tank unit 310 so that the treated water 2 discharged from the second aeration tank unit 310 is discharged to the outside. Here, the treated water 2 may be a dischargeable water body purified from the second aeration tank 300 .

This treated water discharge pipe 340 is closed during the secondary purification process of the primary purified raw water 1 from the second aeration tank 300 , and the secondary of the primary purified raw water 1 from the second aeration tank 300 is performed. It would be desirable to be open at the end of the purification process.

To this end, it is desirable that the treated water discharge pipe 340 be provided with an opening/closing means (eg, an opening/closing valve) operated by the control unit 700 to block the movement of the treated water 2 or the movement of the treated water 2 . will be.

2, the stirring unit 400 is installed in the anaerobic tank unit 110, the first aeration tank unit 210, and the second aeration tank unit 310, respectively, the suspended substances of the raw water (1) located on the upper side and As a configuration for moving the organic material downward, it consists of a suction member 410 , a duct 420 , and a water flow generating means 430 .

That is, the stirring unit 400 installed in the anaerobic tank unit 110 causes the suspended substances and organic substances of the raw water 1 to move to the lower side of the anaerobic tank unit 110, and the stirring unit installed in the first aeration tank unit 210 ( Reference numeral 400 denotes that the suspended substances and organic substances of the denitrified raw water 1 are moved to the lower side of the first aeration tank unit 210 , and the stirring unit 4000 installed in the second aeration tank unit 310 denotes primary purified raw water. It may be understood that the suspended matter and organic matter in (1) are moved to the lower side of the second aeration tank unit 310 .

Accordingly, in the following, the raw water (1) that the stirring unit 400 sucks, moves, and discharges together with the suspended substances and organic substances is one of the raw water (1), the denitrified raw water (1), and the primary purified raw water (1). It would be desirable to understand at least one.

The suction member 410 is a configuration constituting the upper portion of the stirring unit 400 , and one or more suction ports 411 are formed so that suspended substances and organic materials of the raw water 1 are sucked into the inside of the stirring unit 400 .

The raw water (1) flowing into the anaerobic tank unit 110, the denitrified raw water (1) flowing into the first aeration tank unit 210, so that the suction member 410 sucks the suspended substances and organic substances of the raw water (1) ) and the primary purified raw water 1 flowing into the second aeration tank unit 310 is preferably filled in the units 110 , 210 , and 310 at the same height as the suction member 410 .

The duct 420 is vertically extended to provide a path for the raw water 1 containing suspended substances and organic substances to move downward through the water flow generating means 430, and raw water containing suspended substances and organic substances ( The upper part connected to the suction member 410 is opened so that 1) is introduced into the inside through the suction port 411 , and the suspended substances and organic substances are moved downward through the water flow generating means 430 and then the units 110 and 210 , a discharge port 421 is formed at the lower side so as to be discharged to the lower side of the 310).

The duct 420 may have a diameter larger than a diameter in which a portion 420a provides a movement path of the raw water 1 containing suspended and organic materials. This is to operate the water current generating means 430 by embedding a driving device (eg, a motor) for operating the water current generating means 430 in a part of the duct 420a.

In addition, the duct 420 has a vortex generator (not shown) installed therein, so that the raw water 1 containing suspended substances and organic substances moved to the outlet 421 by the water flow generating means 430 is a spiral vortex. to occur. Here, the installation of a vortex generator (not shown) in the duct 420 is to reduce the load on the water current generating means 430 by preventing the load on the water current generating means 430 .

The water flow generating means 430 is installed in the duct 420, and is operated by the control unit 700 to generate a water flow so that the raw water 1 containing suspended substances and organic substances moves toward the lower outlet 421. .

Such a water flow generating means 430 may generate a water flow so that a spiral vortex is generated in the raw water 1 containing suspended substances and organic substances.

Through this, the stirring unit 400 uses the water flow generating means 430 together with the vortex generator (not shown) installed in the duct 420 to generate a spiral vortex in the raw water 1 containing suspended substances and organic substances. can make it happen

In addition, the stirring unit 400 is a vortex generator (not shown) installed in the duct 420, even when the water flow generating means 430 is operated with low power, the raw water 1 containing suspended substances and organic substances is discharged through the outlet 421. ) can be moved toward

Referring to FIG. 3 , the string-like media unit 500 is installed in the anaerobic tank unit 110 , the first aeration tank unit 210 and the second aeration tank unit 310 , respectively, and is moved downward through the stirring unit 400 . In order to purify the suspended matter and organic matter of the raw water (1) discharged afterward by adsorption and biological oxidative decomposition by microorganisms, it consists of a string media membrane 510 and a tube 520, which are microorganisms contacting media in which the microorganisms are abundantly filled.

That is, the string media part 500 installed in the anaerobic tank unit 110 purifies the suspended substances and organic substances of the raw water 1, and the string media part 500 installed in the first aeration tank unit 210 is denitrified raw water. It is preferable to purify the suspended matter and organic matter of (1), and the string media part 500 installed in the second aeration tank unit 310 is understood to purify the suspended matter and organic matter of the primary purified raw water (1). something to do.

Accordingly, in the following, the raw water (1) to be purified by the string media part 500 will preferably be understood as at least one of the raw water (1), the denitrified raw water (1), and the primary purified raw water (1).

The string media membrane 510 is filled with a large amount of microorganisms for adsorbing and oxidatively decomposing suspended substances and organic substances of the raw water 1 that are moved to the lower side of the units 110 , 210 , 310 through the outlet 421 .

Here, the stringy media means a microorganism contacting media, and the microorganisms charged in a large amount to adsorb and oxidatively decompose suspended substances and organic substances may consist of bacteria, fungi, protozoa, metazoans, and the like.

On the other hand, the string-like media part 500 may be provided with a frame surrounding the string-like media membrane 510 so that the remaining directions except for the portion through which the tube 520 passes vertically are not exposed to the raw water (1).

The tube 520 is installed vertically between the frames to penetrate the frame vertically to prevent the string media membrane 510 from being separated from the frame, and the suspended and organic substances of the raw water (1) to the string media membrane 510. At least one tube through hole 521 is formed in the sidewall to be adsorbed.

In addition, the tube 520 is provided with a guide plate 520 protruding in a direction orthogonal to the sidewall to guide the floating material and the organic material to move toward the string-like media membrane 510 .

In the case of the string media part 500 installed in the first aeration tank unit 210 , the guide plate 520 is the denitrified raw water 1 that is moved upward through the oxygen supplied from the first aeration unit 230 . This is to induce the suspended matter and organic matter to move toward the string media membrane 510 , and in contrast to this, in the case of the string media unit 500 installed in the second aeration tank unit 310 , it is supplied from the second air diffuser unit 330 . It would be preferable to understand that the suspended matter and organic matter of the primary purified raw water (1) that is moved upward through the oxygen is guided to move toward the stringy media membrane (510).

Furthermore, the guide plate 520 is operated by the control unit 700 so that the tube through hole 521 is opened or closed, it is possible to control the amount of suspended matter and organic matter flowing into the string media membrane 510 .

On the other hand, it will be preferable that the string media part 500 is provided with a driving device (eg, a motor) that allows the guide plate 520 to be operated by the controller 700 .

Referring back to FIG. 1 , the circulation unit 600 converts the treated water 2 into the anaerobic tank 100 before the treated water 2 generated in the second aeration tank unit 310 is discharged through the treated water discharge pipe 340 . ) is cycled.

The circulation unit 600 is preferably provided with a circulation pipe and a circulation pump to circulate the treated water 2 to the anoxic tank 100 .

Specifically, the circulation pipe of the circulation unit 600 includes a pipe having an inlet in the treated water outlet pipe 340 , an outlet in the raw water inlet pipe 120 , and connecting the inlet and the outlet. And the circulation pump of the circulation unit 600 causes the treated water to flow into the inlet of the circulation pipe, and circulates the treated water 2 along the circulation pipe to be discharged into the raw water inlet pipe 120 .

4, the control unit 700 is the anaerobic tank 100, the first aeration tank 200, the second aeration tank 300, the stirring unit 400, the string-shaped media unit 500 and the circulation unit 600. control

As a specific example, the control unit 700 controls the anoxic tank 100 so that the denitrified raw water 1 is discharged from the anaerobic tank 110, or during the denitrification process of the anoxic tank 100, the raw water inlet pipe ( The raw water inlet pipe 120 and the first connector 220 are closed through the opening/closing means provided in 120) and the second connecting pipe 220, so that the denitrified raw water 1 is discharged from the anaerobic tank unit 110 is to block

In addition, the control unit 700 controls the first aeration tank 200 so that the primary purified raw water 1 is discharged from the first aeration tank unit 210 or during the primary purification process of the first aeration tank 200 is performed. The first connecting pipe 220 and the second connecting pipe 320 are closed through the opening/closing means provided in the first connecting pipe 220 and the second connecting pipe 320, so that the primary purified raw water 1 is produced. 1 This is to block discharge to the aeration tank unit 210 .

In addition, when the control unit 700 controls the second aeration tank 300 , the treated water 2 is discharged from the second aeration tank unit 310 or during the secondary purification process of the second aeration tank 300 is performed. 2 The second connection pipe 320 and the treated water discharge pipe 340 are closed through the opening/closing means provided in the 2 connection pipe 320 and the treated water discharge pipe 340 so that the treated water 2 is transferred to the second aeration tank unit 310 ) to block the release.

Furthermore, the control unit 700 controls the first aeration tank 200 and the second aeration tank 300 so that the first aeration tank 200 and the second aeration tank 300 are operated not only as an aeration tank but also as an anaerobic tank like the anoxic tank 110 . control

As described above, for the operation of the aeration tank and the anoxic tank of the first aeration tank 200 and the second aeration tank 300, the nitrogen treatment system 10 using the low-power stirring and string media of the present invention is the first aeration tank unit 210 and A sensor unit 800 for measuring the nitrate nitrogen concentration and the ammonia nitrogen concentration of the raw water 1 flowing into the second aeration tank unit 310 may be further included.

The sensor unit 800 is provided on one side of the second inner wall 211 to measure the nitrate nitrogen concentration and the ammonia nitrogen concentration of the denitrified raw water 1 flowing into the first aeration tank unit 210 , and denitrification It consists of one sensor that integrally measures the nitrate nitrogen concentration and ammonia nitrogen concentration of the denitrified raw water (1), or a plurality of sensors that measure the nitrate nitrogen concentration and ammonia nitrogen concentration of the denitrified raw water (1), respectively It may be made of a sensor.

In addition, the sensor unit 800 is provided on one side of the third inner wall 311 to measure the nitrate nitrogen concentration and the ammonia nitrogen concentration of the primary purified raw water 1 flowing into the second aeration tank unit 310 and , consists of one sensor that integrally measures the nitrate nitrogen concentration and the ammonia nitrogen concentration of the primary purified raw water (1), or measures the nitrate nitrogen concentration and the ammonia nitrogen concentration of the primary purified raw water (1), respectively. It may consist of a plurality of sensors.

When the control unit 700 determines that the nitrate nitrogen concentration of the raw water 1 flowing into the first aeration tank unit 210 and the second aeration tank unit 310 through the sensor unit 800 is equal to or greater than a preset concentration, The first aeration tank 200 and the second aeration tank 300 are controlled to operate as an anaerobic tank. At this time, the first diffuser 230 and the second diffuser 330 are not operated, so that the oxygen supply to the denitrified raw water 1 and the primary purified raw water 1 is stopped, respectively.

On the other hand, when it is determined that the ammonia nitrogen concentration of the raw water 1 flowing into the first aeration tank unit 210 and the second aeration tank unit 310 through the sensor unit 800 is equal to or greater than the preset concentration, the first The aeration tank 200 and the second aeration tank 300 are controlled to operate as an aeration tank. At this time, the first diffuser 230 and the second diffuser 330 are operated to supply oxygen to the denitrified raw water 1 and the primary purified raw water 1, respectively.

As such, the control unit 700 operates the first aeration tank 200 and the second aeration tank 300 as an aeration tank and an anoxic tank in order to easily treat the raw water 1 whose nitrogen concentration may vary depending on the winter and summer seasons. am.

Furthermore, in the winter season, the ammonia nitrogen concentration of the raw water 1 may be increased, and in the summer season, the nitrate nitrogen concentration of the raw water 1 may be increased. Accordingly, the control unit 700 may control the first aeration tank 200 and the second aeration tank 300 to operate as an aeration tank in winter and anoxic tank in summer.

And the control unit 700 controls the stirring unit 400 by operating the water flow generating means 430, the raw water (1) of the anaerobic tank unit 110, the denitrified raw water (1) of the first aeration tank unit 210 and the suspended substances and organic substances of the primary purified raw water 1 of the second aeration tank unit 310 are moved to the lower side of the units 110 , 210 , and 310 through the water flow.

In addition, the control unit 700 controls the string media part 500 by operating the guide plate 520 to open or close the tube through hole 521 to the string media membrane 510 , the floating material of the raw water (1). and controlling the inflow amount of suspended matter and organic matter while inducing the inflow of organic matter.

And the control unit 700 controls the circulation unit 600 through the opening and closing means provided in the second connection pipe 320 and the treated water discharge pipe 340, the second connection pipe 320 and the treated water discharge pipe (340) This is closed, and by operating the circulation pump, the treated water 2 flowing in through the inlet of the circulation pipe passing through the treated water discharge pipe 340 is circulated through the circulation pipe, and the outlet passing through the raw water inlet pipe 120 is closed. to be released through

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments in a way that is combined with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

1: Enemies,
2: treated water,
10: nitrogen treatment system using low-power stirring and string media,
100: anaerobic tank,
110: anaerobic tank unit;
111: a first inner wall;
120: raw water inlet pipe,
200: a first aeration tank;
210: a first aeration tank unit;
211: second inner wall;
220: a first connector;
230: the first gynecomastia;
300: a second aeration tank;
310: a second aeration tank unit;
311: third inner wall,
320: a second connector;
330: the second gynecomastia;
340: treated water discharge pipe,
400: agitation unit;
410: a suction member;
411: suction port,
420: duct,
421: outlet,
430: water flow generating means;
500: string media part,
510: stringy media membrane,
520: tube;
521: tube through hole;
522: guide plate,
600: circulation unit;
700: control unit;
800: a sensor unit.

Claims (11)

anoxic tank 100 for denitrification of nitrate nitrogen of raw water 1 introduced from the outside;
a first aeration tank 200 for primary purification of the raw water 1 by supplying oxygen to the denitrified raw water 1 through the anoxic tank 100;
After supplying oxygen to the primary purified raw water (1) through the first aeration tank (200), secondary purification of the primary purified raw water (1) to generate treated water (2), the treated water (2) ) a second aeration tank 300 for discharging to the outside;
Installed in the anaerobic tank 100, the first aeration tank 200, and the second aeration tank 300, respectively, the suspended substances and organic substances of the raw water (1) are sucked together with the raw water (1), and then a water flow is generated to generate the agitating unit 400 for moving suspended matter and organic matter downward;
After moving to the lower side through the stirring unit 400, a string media part that purifies the suspended substances and organic substances of the raw water (1) discharged from the stirring unit 400 through adsorption by microorganisms and biological oxidative decomposition ( 500);
a circulation unit 600 for circulating the treated water 2 to the anaerobic tank 100 before being discharged from the second aeration tank 300;
When the nitrate nitrogen concentration of the raw water 1 flowing into the first aeration tank 200 and the second aeration tank 300 is equal to or higher than a preset concentration, the first aeration tank 200 and the second aeration tank 300 are anoxic a control unit 700 that controls the operation to be operated as, and supplies oxygen to the raw water 1 when the ammonia nitrogen concentration of the raw water 1 is greater than or equal to a preset concentration; and
The control unit 700 determines whether the nitrate nitrogen concentration and the ammonia nitrogen concentration of the raw water 1 flowing into the first aeration tank 200 and the second aeration tank 300 are equal to or greater than preset concentrations, the A sensor unit 800 installed inside the first aeration tank 200 and the second aeration tank 300 to measure the nitrate nitrogen concentration and the ammonia nitrogen concentration of the raw water 1;
The stirring unit 400,
a suction member 410 in which one or more suction ports 411 are formed so as to attract suspended substances and organic substances of one of the raw water (1), the denitrified raw water (1), and the primary purified raw water (1);
The upper part is connected to the suction member 410, and is opened so that suspended substances and organic substances of the raw water 1 sucked through the suction port 411 are introduced into the inside, and the floating of the introduced raw water 1 is opened. a duct 420 in which an outlet 421 is formed at a lower portion to discharge substances and organic substances; and
Water current generating means installed in the duct 420 and operated by the control unit 700 to generate a water flow so that raw water 1 containing suspended substances and organic substances introduced into the duct 420 moves downward. (430); including;
The string media part 500 is,
It is a microorganism contacting media in which a large amount of microorganisms for adsorbing and oxidatively decomposing suspended substances and organic substances of the raw water 1 discharged from the stirring unit 400 are filled, and the direction other than the part through which the tube 520 passes vertically is Stringsang media membrane 510 that is wrapped by the frame so as not to be exposed to the raw water (1); and
It is installed vertically between the frames and penetrates the frame vertically to prevent the string-like media membrane 510 from being separated from the frame, and the suspended and organic substances of the raw water (1) are the string-like media membrane 510. The tube 520 in which one or more tube through-holes 521 are formed so as to be adsorbed to the
The tube 520 is
Oxygen supplied from the first aeration tank 200 or the second aeration tank 300 by protruding from the side wall forming the tube through hole 521 in a direction perpendicular to the side wall is moved toward the string-shaped media membrane 510 guide,
and a guide plate 522 for controlling the amount of suspended matter and organic matter flowing into the string media membrane 510 by opening or closing the tube through hole 521 by the control unit 700;
The control unit 700,
In the winter season when the ammonia nitrogen concentration of the raw water 1 becomes higher than the preset concentration, the first aeration tank 200 and the second aeration tank 300 are used as an aeration tank, and the nitrate nitrogen concentration of the raw water 1 becomes higher than the preset concentration In summer, the nitrogen treatment system using low-power stirring and string media, characterized in that the first aeration tank 200 and the second aeration tank 300 are controlled to be operated as an anoxic tank. delete delete delete delete delete The method of claim 1,
The anaerobic tank 100,
The stirring unit 400 and a pair of the string-shaped media unit 500 are installed inside, and the one side wall of the one side wall adjacent to the first aeration tank 200 and the pair of string-shaped media units 500 and An anaerobic tank unit 110 in which the interior is partially partitioned through the first inner wall 111 extending from the upper side to the lower side, which is located between the adjacent string media part 500; and
Raw water inlet pipe 120 penetrating the other side wall of the anaerobic tank unit 110, and allowing the raw water 1 flowing in from the outside to flow into the anaerobic tank unit 110; Low-power stirring and comprising a Nitrogen treatment system using string media. 8. The method of claim 7,
The first aeration tank 200,
The stirring unit 400 and the pair of string-shaped media units 500 are installed therein, and the one side wall of the one side wall adjacent to the second aeration tank 300 and the pair of string-shaped media units 500 and a first aeration tank unit 210 in which the inside is partially partitioned through a second inner wall 211 extending from the upper side to the lower side, which is located between the adjacent string-shaped media parts 500;
Penetrating one wall of the anaerobic tank unit 110 and the other wall of the first aeration tank unit 210 , the denitrified raw water 1 from the anaerobic tank 100 flows into the first aeration tank unit 210 . a first connector 220 to be made; and
A first provided at the lower side of the first aeration tank unit 210 and supplies oxygen to the denitrified raw water 1 flowing into the first aeration tank unit 210 through the first connection pipe 220 . Nitrogen treatment system using low-power stirring and string media, characterized in that it comprises a; diffuser unit (230). 9. The method of claim 8,
The control unit 700,
Low power, characterized in that when the concentration of ammonia nitrogen in the denitrified raw water 1 is greater than or equal to a preset concentration, the first diffuser 230 controls to supply oxygen to the denitrified raw water 1 Nitrogen treatment system using agitation and string media. 9. The method of claim 8,
The second aeration tank 300,
The stirring unit 400 and a pair of the string-shaped media portion 500 are installed therein, and one side wall through which the treated water discharge pipe 340 passes and the one side wall of the pair of string-shaped media portions 500 and A second aeration tank unit 310, which is located between the adjacent string media part 500, the inside of which is partially partitioned through the third inner wall 311 extending from the upper side to the lower side;
Penetrating through one side wall of the first aeration tank 200 and the other wall of the second aeration tank unit 210, the first purified raw water 1 from the first aeration tank 200 is supplied to the second aeration tank unit 310 ) to be introduced into the second connection pipe 320;
It is provided below the second aeration tank unit 310 and supplies oxygen to the primary purified raw water 1 flowing into the second aeration tank unit 310 through the second connection pipe 320 . a diffuser 330; and
and the treated water discharge pipe 340 passing through one wall of the second aeration tank unit 310 and allowing the treated water 2 to be discharged from the second aeration tank unit 310 to the outside. Low-power stirring and nitrogen treatment system using string media. 11. The method of claim 10,
The control unit 700,
Low power, characterized in that when the concentration of ammonia nitrogen in the primary purified raw water 1 is equal to or greater than a preset concentration, the second diffuser 330 controls to supply oxygen to the primary purified raw water 1 Nitrogen treatment system using agitation and string media.

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