KR20200095421A - System for automatic treatment of wastewater - Google Patents

Abstract

The present invention relates to an automatic wastewater treatment system to conveniently and timely treat city wastewater and livestock wastewater. According to the present invention, the automatic wastewater treatment system comprises: a city wastewater treatment apparatus removing nitrogen from city wastewater which is raw water to be treated; a livestock city wastewater treatment apparatus removing nitrogen from livestock wastewater which is raw water to be treated; and a central management apparatus receiving city wastewater treatment time range information and livestock wastewater treatment time range information from a user terminal to store the same, determining whether any one from city wastewater treatment and livestock wastewater treatment should be performed based on the city wastewater treatment time range information and the livestock wastewater treatment time range information, transmitting a city wastewater treatment command to the city wastewater treatment apparatus when it is determined that the city wastewater treatment should be performed, and transmitting a livestock wastewater treatment command to the livestock wastewater treatment apparatus when it is determined that the livestock wastewater treatment should be performed.

Description

Automatic wastewater treatment system {System for automatic treatment of wastewater}

The present invention relates to an automatic wastewater treatment system, and more particularly, to a system capable of automatically treating municipal wastewater and livestock wastewater.

In water bodies such as rivers, coastal seas, and lakes, eutrophication occurs when nutrients such as nitrogen or phosphorus increase.

The eutrophication phenomenon changes the natural ecosystem by activating the production of organisms using nutrients as nutrients, and causes red tide in sea areas, and causes abnormal proliferation of algae in lakes.

This process proceeds smoothly in the natural world, but when a large amount of municipal wastewater such as domestic sewage and factory drainage, and livestock wastewater is introduced, nutrients are excessively increased, and accordingly, the value as a water resource is lost due to mass propagation of algae. And, the eutrophication phenomenon proceeds rapidly, and in severe cases, odors are produced by decaying substances and water pollution is promoted. Therefore, these nutrients in wastewater must be removed before flowing into lakes or rivers, and many studies have been conducted to remove them efficiently.

Currently, the quality of sewage and wastewater discharged to public waters is improved year by year due to the spread of sewage and wastewater treatment systems, but the concentration of nutrients such as nitrogen and phosphorus is still rising. As a result, red tide and eutrophication are occurring, which is a serious problem in society. Accordingly, technologies for treating nutrients such as nitrogen and phosphorus as well as treatment of organic matter, which have been the center of water treatment, are attracting attention, and a more efficient and economical advanced water treatment technology is required.

Prior Art 1: Korean Patent Registration No. 10-1236693 (wastewater treatment system)

The present invention has been proposed to solve the above-described conventional problem, and to automatically select one of the urban wastewater treatment path and the livestock wastewater treatment path according to the time zone information preset by the user and perform the corresponding wastewater treatment. Its purpose is to provide an automatic wastewater treatment system.

In order to achieve the above object, an automatic wastewater treatment system according to a preferred embodiment of the present invention comprises: an urban wastewater treatment device for removing nitrogen from urban wastewater to be treated according to an instruction of a central management device; A livestock wastewater treatment device for removing nitrogen from livestock wastewater to be treated according to the command of the central management device; And city wastewater treatment time zone information and livestock wastewater treatment time zone information received from the user's portable terminal in advance, and stored in a lookup table form, based on the urban wastewater treatment time zone information and the livestock wastewater treatment time zone information. It is determined which one of the livestock wastewater treatment should be performed, and when it is determined that the urban wastewater treatment is to be performed, a city wastewater treatment command is transmitted to the municipal wastewater treatment device, and the livestock wastewater treatment should be performed. And the central management device for transmitting a livestock wastewater treatment command to the livestock wastewater treatment device when it is determined that it is the case.

The urban wastewater treatment apparatus includes organic nitrogen removal treatment of organic matter of urban wastewater introduced from the raw water to be treated in a Sequencing Batch Reactor (SBR) method, so that the first treated water containing ammonium is supplied with a first outlet valve. A first reaction tank flowing out through; Corresponding to the raw water to be treated, it is connected in parallel with the first reaction tank, and the inflowing urban wastewater is subjected to nitrite oxidation in a continuous batch reaction tank (SBR) method, and the second treated water containing nitrite is supplied to the second outlet valve. A second reaction tank that flows out through; A first intermediate tank for storing the first treated water discharged from the first reaction tank; A second intermediate tank for storing the second treated water discharged from the second reaction tank; It is connected to the first intermediate tank through a first inlet pipe, and connected to the second intermediate tank through a second inlet pipe, so that the first treated water flows through the first inlet pipe, and the second inlet When the second treated water flows through the pipe, the mixture of the first treated water and the second treated water is subjected to anaerobic ammonium oxidation using a granular sludge bed (GSB) method and denitrification of nitrate nitrogen. A third reaction tank wrapped in a black cloth to discharge wastewater from which nitrogen gas has been removed by performing a digestion treatment, and to protect the granules of Anamox from light; And a control unit for controlling the operation of the first, second, and third reaction tanks.

The control unit controls the first intermediate tank and the first inlet pipe, the second intermediate tank and the second inlet pipe according to the urban wastewater treatment command of the central management device, and controls the first, second and Controls at least one of the reaction temperature, residence time, outlet valve, and aeration time of each of the third reaction tanks, and the aeration time of the second reaction tank is measured for municipal wastewater flowing into the second reaction tank and being treated. It is controlled to vary according to the pH concentration.

The third reaction tank of the urban wastewater treatment apparatus includes: a front end mixing unit configured to mix the first treated water and the second treated water introduced from the first inlet pipe and the second inlet pipe at a predetermined predetermined ratio; And a rear end reaction tank in the form of an orifice that is reduced in diameter from the lowermost end to the center portion than the diameter of the upper portion higher than the center portion.

The central management device wirelessly communicates with the urban wastewater treatment device and the livestock wastewater treatment device using TVWS wireless communication using an available frequency band of the TV band.

To this end, the central management device accesses a server to receive a list of available TVWS channels, classifies peripheral devices including the urban wastewater treatment device and the livestock wastewater treatment device into a plurality of groups, and the TVWS channel list TVWS channels included in the group are allocated for each group, and the number of sub-channels is set within a range in which traffic excess does not occur according to the amount of information transmission for each TVWS channel allocated for each group, and the group according to the set number of sub-channels The TVWS channel allocated for each is divided into a plurality of TVWS sub-channels and allocated to the urban wastewater treatment device or the livestock wastewater treatment device included in the group, and the TVWS unit allocated to the urban wastewater treatment device or the livestock wastewater treatment device The urban wastewater treatment command or the livestock wastewater treatment command is transmitted through the channel.

According to the present invention with such a configuration, the user sets the urban wastewater treatment time zone and the livestock wastewater treatment time zone in advance, and when the corresponding time zone arrives, the corresponding treatment path is automatically selected from the urban wastewater treatment path and the livestock wastewater treatment path. Since the corresponding wastewater treatment is performed, it is possible to conveniently and timely treat urban wastewater and livestock wastewater.

1 is a block diagram of an automatic wastewater treatment system according to an embodiment of the present invention.
2 is a schematic view of the urban wastewater treatment apparatus shown in FIG. 1.
3 is a detailed configuration diagram of the urban wastewater treatment apparatus shown in FIG. 1.
4 is a flowchart illustrating a method of automatically treating wastewater according to an embodiment of the present invention.
5 is a flowchart for explaining the urban wastewater treatment process shown in FIG. 4 in more detail.
6 is a block diagram showing an embodiment of the configuration of an automatic wastewater treatment system using wireless communication.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate an overall understanding, the same reference numerals are used for the same elements in the drawings, and duplicate descriptions for the same elements are omitted.

1 is a block diagram of an automatic wastewater treatment system according to an embodiment of the present invention.

An automatic wastewater treatment system according to an embodiment of the present invention may include a user terminal 100, an urban wastewater treatment device 200, a livestock wastewater treatment device 300, and a central management device 400.

It is preferable that the automatic wastewater treatment system according to an embodiment of the present invention is installed in a place where municipal wastewater and livestock wastewater can be introduced.

The user terminal 100 may input an urban wastewater treatment time zone and a livestock wastewater treatment time zone. Here, the urban wastewater treatment time zone and the livestock wastewater treatment time zone are preferably set to different time zones. For example, the urban wastewater treatment time zone may be input from 09:00 today to 20:00 today, and the livestock wastewater treatment time zone may be input from 20:01 today to 08:59 the next day. The example urban wastewater treatment time zone and livestock wastewater treatment time zone are only examples and are not limited thereto.

That is, the user terminal 100 may input information indicating that urban wastewater treatment should be carried out in the city wastewater treatment time zone, and also input the livestock wastewater treatment time zone. Information indicating that wastewater treatment should be performed can be entered.

The user terminal 100 may be implemented as a portable terminal or a portable computer. Here, the portable terminal is a wireless communication device that guarantees portability and mobility, and includes Personal Communication System (PCS), Global System for Mobile communications (GSM), Personal Digital Cellular (PDC), Personal Handyphone System (PHS), Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) terminal, etc. ) May include a wireless communication device based. The portable computer may include a notebook, a laptop, and the like.

In addition, the user terminal 100 may be various smart devices such as a smart phone, a smart note, a tablet PC, and a wearable computer.

Meanwhile, if necessary, the user terminal 100 may additionally input a waiting time zone other than the urban wastewater treatment time zone and the livestock wastewater treatment time zone. Here, the waiting time period may be regarded as a time period during which the operation of treating urban wastewater and livestock wastewater is not performed and the standby state is maintained.

The urban wastewater treatment apparatus 200 may remove nitrogen from urban wastewater, which is the raw water to be treated, based on a municipal wastewater treatment command from the central management device 400.

The livestock wastewater treatment apparatus 300 may remove nitrogen from livestock wastewater, which is raw water to be treated, based on an order to treat livestock wastewater from the central management device 400.

The central management device 400 receives urban wastewater treatment time zone information and livestock wastewater treatment time zone information from the user terminal 100 through a wired network (not shown) or a wireless network (not shown) and stores it in the form of a lookup table. do. Here, the urban wastewater treatment time zone information includes a designated urban wastewater treatment time zone and information indicating that urban wastewater treatment should be performed. The livestock wastewater treatment time zone information includes information indicating that the designated livestock wastewater treatment time zone and livestock wastewater treatment should be performed.

The above-described urban wastewater treatment time zone information and livestock wastewater treatment time zone information can be adjusted at any time at the request of the user.

Then, the central management device 400 determines whether the time zone has arrived based on the urban wastewater treatment time zone information and the livestock wastewater treatment time zone information, and orders the wastewater treatment in the time zone that arrived in the urban wastewater treatment time zone and the livestock wastewater treatment time zone. can do. That is, the central management device 400 transmits an urban wastewater treatment command to the urban wastewater treatment device 200 when the urban wastewater treatment time zone arrives, and when the livestock wastewater treatment time zone arrives, the livestock wastewater treatment device 300 Send the order to treat livestock wastewater to ). Here, the urban wastewater treatment command includes information indicating urban wastewater treatment and the time period in which urban wastewater treatment should be performed, and the livestock wastewater treatment command includes information indicating livestock wastewater treatment and the time period in which livestock wastewater treatment should be performed. do. The time zone in which urban wastewater treatment should be performed and the time zone in which livestock wastewater treatment should be performed are different time zones. For example, the time zone in which urban wastewater treatment should be performed may be the urban wastewater treatment time zone exemplified above from 09:00 to 20:00 today, and the time zone in which livestock wastewater treatment should be performed is 20:00 on the previous day. It may be from 01 to 08:59 the next day.

Accordingly, when receiving the urban wastewater treatment command, the urban wastewater treatment apparatus 200 performs the urban wastewater treatment operation only during the corresponding time period, and the livestock wastewater treatment apparatus 300 receives the livestock wastewater treatment command during the corresponding time period. Only perform livestock wastewater treatment operations.

Accordingly, while the urban wastewater treatment apparatus 200 is performing the urban wastewater treatment operation, the livestock wastewater treatment apparatus 300 may not be able to perform the livestock wastewater treatment operation. Conversely, while the livestock wastewater treatment apparatus 300 is performing the livestock wastewater treatment operation, the urban wastewater treatment apparatus 200 may not be able to perform the municipal wastewater treatment operation.

If necessary, if the user terminal 100 additionally inputs the waiting time zone, the central management device 400 does not perform the operation of treating urban wastewater and livestock wastewater during the waiting time zone, but treats urban wastewater to maintain the standby state. It manages the apparatus 200 and the livestock wastewater treatment apparatus 300. Here, the waiting time zone will be a time zone different from the urban wastewater treatment time zone and the livestock wastewater treatment time zone.

2 is a schematic diagram of the urban wastewater treatment apparatus 200 shown in FIG. 1.

The urban wastewater treatment apparatus 200 basically includes a first reaction tank 10, a second reaction tank 20, a control unit 30, and a third reaction tank 40.

In an embodiment of the present invention, the first reaction tank 10 discharges the first treated water containing ammonium by removing organic nitrogen from the incoming urban wastewater in a Sequencing Batch Reactor (SBR) method. .

In addition, the second reaction tank 20 is connected in parallel with the first reaction tank, and a second treated water containing nitrite by performing a nitrite treatment on the incoming municipal wastewater in a Sequencing Batch Reactor (SBR) method. Spill.

And, the third reaction tank 30 from the first intermediate tank for storing the first treated water discharged from the first reaction tank and the second intermediate tank for storing the second treated water discharged from the second reaction tank, respectively, When the first treated water containing the ammonium is introduced from the first inlet pipe and the second inlet pipe and connected by the first inlet pipe and the second treated water containing the nitrite is introduced from the second inlet pipe, the The mixture of the first treated water and the second treated water is sequentially subjected to anaerobic ammonium oxidation and denitrification using a granular sludge bed (GSB) method to discharge the wastewater from which nitrogen gas has been removed.

And, the control unit 30 controls the aeration time of each of the first and second reaction tanks, but the aeration time of the first reaction tank is fixed to a preset predetermined time, and the aeration time of the second reaction tank is the Controlled to be varied according to the pH concentration measured for urban wastewater flowing into the second reactor and being treated, and the control unit 30 controls the ammonium concentration of urban wastewater flowing into the second reactor and being treated according to the measured PH concentration. When it is determined that the minimum value is reached, the aeration of the second reactor may be controlled to be stopped.

More specifically, the first reaction tank 10 may remove organic matter from the incoming raw water to be treated (urban wastewater). For example, raw water to be treated (urban wastewater) can be obtained through a septic tank in a general residential area. The first reaction tank 10 may be operated in an anaerobic mode or an aerobic mode.

In other words, the first reactor 10 removes organic matter from the raw water to be treated (city wastewater) (that is, ammonia nitrogen is included) introduced by using the Sequencing Batch Reactor (SBR) method. can do. That is, the first reaction tank 10 removes organic matter (i.e., organic nitrogen (organic-N)) from the introduced raw water to be treated (urban wastewater) to remove ammonium (NH ₄ ⁺ ) (i.e., ammonia nitrogen; NH ₃ ⁺ Treated water containing large amounts of -N) can be discharged. Organic-N forms ammonia nitrogen due to bacterial decomposition.

Here, the continuous batch reactor method is a method in which inflow of wastewater and outflow of treated water occurs in a single reactor, and inflow (fill) -> reaction -> settle -> decant -> idle Steps of) are sequentially performed. The inflow step is a step of injecting raw water (urban wastewater) into the reaction tank, and stirring may be performed by an underwater stirrer. In the reaction step, aeration is performed and organic matter is decomposed by aerobic microorganisms, and the injected influent is treated. The sedimentation step breaks down the supernatant and sludge. In the discharge step, the solid-liquid separated supernatant is discharged at the settling time. The rest phase waits until the amount of water to be injected into the reaction tank is generated. Those working in the same industry will be able to fully grasp more specific details on the continuous batch reactor method through known techniques.

For smooth discharge of the first treated water (that is, the effluent water of the first reaction tank 10), the first outlet valve ( 10a) can be installed. More preferably, the first outlet valve 10a of the first reaction tank 10 is preferably installed at a first position lower than the intermediate height of the reaction tank and higher than the height corresponding to the third point. In the process of removing organic substances in the first reaction tank 10, sludge is precipitated in the lower part of the reaction tank. Since the precipitated sludge does not need to be discharged together with the treated water, a discharge valve for sludge may be installed at a lower position between a height corresponding to a third point of the first reaction tank 10 and an intermediate height.

In addition, the first outlet valve 10a is connected to the first inlet pipe to discharge the first treated water to the third reaction tank 30.

The aeration time and reaction temperature of the first reaction tank 10 can be controlled by the controller 30, and short aeration in order to avoid nitrification of ammonia in the introduced urban wastewater and to efficiently convert organic substances into biomass. It is desirable to have a time (about 30 to 60 minutes) and sludge residence time (SRT: about 2 to 5 days). Accordingly, the aeration time of the first reaction tank 10 may be fixed to a predetermined time set in advance by the control unit 30.

In addition, since organic matter removal is less affected by temperature, the first reaction tank 10 is preferably controlled to operate at ambient temperature.

* The effective volume of the first reaction tank 10 is about 5 liters.

The seed activated sludge to be inoculated into the first reactor 10 can be obtained through a pilot-scale nitrite-denitrification SBR (e.g., a pilot-scale nitritation-denitrification SBR having a volume of 8.8 m ³ ).

Meanwhile, the second reaction tank 20 may perform nitritation treatment on the incoming raw water (urban wastewater) to be treated and discharge the second treated water. For example, raw water to be treated (urban wastewater) can be obtained through a septic tank in a general residential area.

In other words, the second reaction tank 20 may perform nitrite treatment on the raw water to be treated (urban wastewater) introduced using a Sequencing Batch Reactor (SBR) method. That is, the second reaction vessel 20 is subjected to nitrite screen processing on the incoming processed raw water (municipal waste water) nitrite (nitrite, NO ₂ ^-) (i.e., nitrite nitrogen; NO ₂ ^- -N), including a large amount of Treated water can be spilled. In this way, when the second reaction tank 20 receives the raw water to be treated (city wastewater) containing ammonia nitrogen, it converts the ammonia nitrogen of the raw water into nitrite nitrogen by nitrite oxidation treatment. At this time, a microorganism such as Nitrosomonas may be used to convert ammonia nitrogen into nitrite nitrogen.

For smooth discharge of the second treated water (that is, the effluent water of the second reaction tank 20), it is discharged to a second position, which is a part of the height corresponding to the third point of the second reaction tank 20 to the middle height. A valve 20a can be installed. More preferably, the outlet valve 20a of the second reaction tank 20 is preferably installed at a second position lower than the intermediate height of the reaction tank and higher than the height corresponding to the 1/3 point. During the nitrous oxidation treatment in the second reaction tank 20, sludge is precipitated in the lower part of the reaction tank. Since the precipitated sludge does not need to be discharged together with the treated water, a discharge valve for sludge may be installed between a height corresponding to a third point of the second reaction tank 20 and an intermediate height.

In addition, the second outlet valve 20a is connected to the second inlet pipe to discharge the second treated water to the third reaction tank 30.

The aeration time, dissolved oxygen, PH concentration, and reaction temperature of the second reaction tank 10 can be monitored or controlled by the controller 30, and the second reaction tank 20 contains approximately 0.5 to 1.5 mg/L of dissolved oxygen ( DO) is preferably maintained, and the effective sludge residence time is approximately 10 to 15 days.

In particular, the duration of the aeration of the second reactor 20 may be variably controlled based on the controller 30 operating in real time. For example, the control unit 30 may control the aeration time to vary according to the PH concentration measured for urban wastewater flowing into the second reaction tank 20 and being treated. In particular, in order to achieve complete nitrite oxidation, the control unit 30, at a time when it is determined that the ammonium concentration of the municipal wastewater being treated by entering the second reaction tank has reached the minimum value according to the measured PH concentration, the second It can be controlled so that the aeration of the reactor is stopped. For example, when the control unit 30 obtains a PH concentration measurement graph, and indicates a characteristic inflection point (also referred to as "ammonium valley") indicating that the ammonium concentration reaches a minimum value and is complete nitrite in the measurement graph , It can stop aeration.

Second gyohwanbi of the reaction vessel 20 a third reaction tank 40, Ana Comox (anammox) as much as possible nitrite for step (nitrite, NO ₂ ^-) in the set to be approximately 0.7 to provide.

In addition, the second reaction tank 20 is preferably controlled to operate at a temperature of approximately 23 ~ 25 ℃.

The effective volume of the second reaction tank 20 is about 10 liters.

The seed activated sludge to be inoculated into the second reactor 20 can be obtained through a pilot-scale nitrous oxide-denitrification SBR (eg, volume 8.8 m ³ pilot-scale nitritation-denitrification SBR).

The control unit 30 may adjust the concentration of dissolved oxygen (DO) in the second reaction tank 20 and the effective sludge residence time in real time. The controller 30 may monitor the concentration of dissolved oxygen (DO), the PH concentration, and the like in the second reaction tank 20 in real time. The controller 30 may control the adjustment of the dissolved oxygen concentration and the PH concentration in the second reaction tank 20.

The third reaction tank 40 may receive the treated water from the first and second reaction tanks 10 and 20 to perform an anamox treatment. Anamox (ANaerobic AMMonium OXidation) is an anaerobic ammonium oxidation process that removes nitrogen from municipal wastewater by using ammonia nitrogen as an electron donor and nitrite nitrogen as an electron acceptor under anaerobic conditions.

In addition, the third reaction tank 40 uses nitrite (that is, nitrite nitrogen) contained in the treated water from the second reaction tank 20 for denitrification treatment of nitrate nitrogen from the first reaction tank 10 Ammonium (i.e., ammonia nitrogen) contained in the treated water of is oxidized to make nitrate nitrogen (NO ₃ ^-- N), and nitrogen gas (N ₂ ) is removed by denitrification of nitrate nitrogen. It can leak. Microorganisms such as Nitrobacter can be used to make nitrate nitrogen. Denitrification refers to a reaction in which microorganisms use nitrogen nitrate as the final electron acceptor to breathe in the absence of molecular oxygen. In the case of denitrification, any one of microorganisms such as Pseudomonas, Micrococcus, and Bacillus may be used.

The third reaction tank 40 is a reaction tank using an EGSB (Expanded Granular Sludge Bed) method, and is an upward flow type reaction tank. To this end, it is manufactured in the form of an orifice so as to induce a fast flow rate up to a predetermined height of the third reaction tank 40. For example, the diameter from the lowermost end of the third reaction tank 40 to the center (ie, a position approximately 2/3 high from the lowermost end) is reduced to be smaller than the upper diameter higher than the center. In the third reaction tank 40, a portion with a small diameter (lower end) manufactured in the form of an orifice can be a rear reaction tank, and a portion located at the top (top) than a portion with a small diameter (lower end) manufactured in an orifice form is shear mixed Can be added.

Here, the EGSB construction method is a well-known construction method, and those who are engaged in the same industry will be able to fully grasp more detailed contents of the EGSB construction method through known technology.

The wastewater pretreated in the first reactor 10 and the second reactor 20 is continuously pumped in the third reactor 40, and the upflow is approximately 150 ml/min by adjusting the recycle ratio to maintain good fluidization conditions. To adjust.

In addition, the third reaction tank 40 is preferably controlled to be operated at a temperature of approximately 29 ~ 30 ℃.

The effective volume of the third reaction tank 40 is about 1 liter, and the diameter is about 50 mm.

The third reactor 40 is wrapped with a black cloth to protect the anammox granular from light.

Anamox granular (granular) sludge used in the third reaction tank 40 is a synthetic wastewater simulating low-strength ammonia wastewater in order to achieve a high nitrogen removal rate (e.g., 5.17 kg N/(m ³ d)). NO ₂ ^-- N: 20 mg/L, NH ₄ ⁺ -N: 30 mg/L) was used.

Anamox granular (granular) sludge used in the third reaction tank 40 can be cultured in a reaction tank using the same GSB (Granular Sludge Bed) method of the third reaction tank 40.

According to FIG. 1 of the above-described configuration, two parallel-connected first and second reactors 10 and 20 perform organic matter removal and complete nitrification, and the third reactor 30 is the first and second reactors. The effluents of (10, 20) are mixed and subjected to anamox treatment.

Typically, biological nitrification makes ammonia nitrogen (NH ₃ ⁺ -N) into nitrate nitrogen (NO ₃ ^-- N) through the intermediate form of nitrite nitrogen (NO ₂ ^-- N). Thereafter, the nitrate nitrogen is reduced to nitrogen gas and removed through a denitrification reaction under oxygen-free or anaerobic conditions.

However, the invention is not the sequential arrangements, by installing the first reactor 10 and second reactor 20 in parallel to each other ammonium nitrogen (NH ₃ -N ⁺⁾ and nitrite nitrogen (NO ₂ ^- - N) was made to be produced together almost simultaneously. And, all of which are a mixture of the third reaction tank 40, nitrate nitrogen by the nitrification reaction in ^- is removed through denitrification after changed in the form of (NO ₃ -N), is reduced to nitrogen gas.

3 is a detailed configuration diagram of the urban wastewater treatment apparatus 200 shown in FIG. 1.

The urban wastewater treatment apparatus 200 shown in FIG. 3 includes a raw water storage tank 1, a first intermediate tank 3, a second intermediate tank 5, a first pump 7 and a second pump 9. , A third pump 11, a fourth pump 13, a first reaction tank 10, a second reaction tank 20, a controller 30, and a third reaction tank 40.

The first and second reactors 10 and 20, the controller 30, and the third reactor 40 described above include the first and second reactors 10 and 20 and the controller 30 of FIG. Since it is the same as the third reaction tank 40, a description thereof will be omitted.

The raw water storage tank 1 stores raw water to be treated (urban wastewater).

The raw water to be treated (urban wastewater) stored in the raw water storage tank 1 flows into the first reaction tank 10 through the first pump 7 and to the second reaction tank 20 through the second pump 9. Flows into. At this time, the operation of the first pump 7 and the second pump 9 may be controlled by the controller 30. That is, the controller 30 may detect the water level of the raw water storage tank 1 and control the operation of the first pump 7 and the second pump 9 according to the detection result.

When the raw water to be treated (city wastewater) is introduced, the first reaction tank 10 aeration and agitation, and organic matters are removed by aerobic microorganisms. At this time, it is preferable that the first reactor 10 has an aeration time of about 30 to 60 minutes in order to avoid nitrification of ammonia in the introduced urban wastewater and efficiently convert organic substances into biomass. After removing the organic matter, the first reaction tank 10 discharges the treated water containing a large amount of ammonium (NH ₄ ⁺ ) (ie, ammonia nitrogen) through the outlet valve 10a. In Fig. 2, reference numeral 15 is a stirrer, and reference numeral 17 is a carrier to which microorganisms (eg, aerobic microorganisms) can be attached.

The first treated water discharged from the first reaction tank 10 is stored in the first intermediate tank 3.

When raw water (urban wastewater) flows into the second reaction tank 20, aeration and agitation are performed, and nitrous oxidation treatment is performed. At this time, the control unit 30 stops aeration when a characteristic inflection point of the PH value (called “ammonium valley”) appears in order to achieve complete nitrite oxidation. If the exit screen nitrite processing the second reaction tank 20 are ^{nitrite-outlet} thereby the number of processing-containing (i. E., Nitrite nitrogen) in a large amount through the outlet valve (20a) (nitrite, NO _2). In Fig. 2, reference numeral 19 denotes a stirrer, and reference numeral 21 denotes a carrier to which microorganisms may adhere.

The second treated water discharged from the second reaction tank 20 is stored in the second intermediate tank 5.

The treated water stored in the first intermediate tank 3 is introduced into the third reaction tank 40 through the third pump 11 and the first inlet pipe, and the treated water stored in the second intermediate tank 5 is the fourth It is introduced into the third reaction tank 40 through the pump 13 and the second inlet pipe. At this time, the treated water stored in the first intermediate tank 3 and the treated water stored in the second intermediate tank 5 may be mixed at the inlet side of the third reaction tank 40 and then introduced. The mixing ratio of the time may be controlled by controlling the pump of the controller 30.

Accordingly, the operation of the third pump 11 and the fourth pump 13 can be controlled by the controller 30. That is, the control unit 30 detects the water level of the first intermediate tank 3 and the second intermediate tank 5, and controls the operation of the third pump 11 and the fourth pump 13 according to the detection result. I can.

The third reaction tank 40 oxidizes the ammonium contained in the treated water from the first reaction tank 10 with nitrite contained in the treated water from the second reaction tank 20 to make nitrate nitrogen. Wastewater from which nitrogen gas has been removed is discharged by denitrification.

4 is a flowchart illustrating a method of automatically treating wastewater according to an embodiment of the present invention.

First, the user manipulates his or her own terminal 100 to provide information on the urban wastewater treatment time zone (i.e., the desired urban wastewater treatment time zone and information indicating that urban wastewater treatment should be performed in that time zone), livestock wastewater treatment time zone information ( That is, the desired livestock wastewater treatment time zone and information indicating that livestock wastewater treatment should be performed at the time zone) are keyed. At this time, it is preferable to assume that the urban wastewater treatment time zone and the livestock wastewater treatment time zone are set in different time zones.

Accordingly, the central management apparatus 400 receives information on a city wastewater treatment time zone and information on a livestock wastewater treatment time zone from the user terminal 100 (S100).

Then, the central management device 400 stores the received urban wastewater treatment time zone information and livestock wastewater treatment time zone information in an internal memory (not shown) in the form of a lookup table (S200).

Then, the central management device 400 determines whether the urban wastewater treatment time zone has arrived or whether the livestock wastewater treatment time zone has arrived.

If the urban wastewater treatment time zone has arrived ("Yes" in S300), the central management device 400 transmits an urban wastewater treatment command to the urban wastewater treatment device 200. Here, the urban wastewater treatment command includes information indicating urban wastewater treatment and a time period in which urban wastewater treatment should be performed.

Accordingly, the urban wastewater treatment apparatus 200 performs the urban wastewater treatment operation only during the time period within the urban wastewater treatment command (S500).

Conversely, if the livestock wastewater treatment time zone has arrived ("Yes" in S400), the central management device 400 transmits a livestock wastewater treatment command to the livestock wastewater treatment device 300. Here, the livestock wastewater treatment command includes information indicating livestock wastewater treatment and a time period in which livestock wastewater treatment should be performed.

Accordingly, the livestock wastewater treatment apparatus 300 performs the livestock wastewater treatment operation only during the time period within the livestock wastewater treatment command (S600).

In the above description, it is assumed that whether the urban wastewater treatment time zone has arrived and whether the livestock wastewater treatment time zone has arrived, but if it is added to determine whether the waiting time zone has arrived, the central management device 400 waits when the waiting time zone has arrived. During the time period, the city wastewater treatment apparatus 200 and the livestock wastewater treatment apparatus 300 will be managed so that the operation of treating urban wastewater and livestock wastewater is not performed and maintains a standby state. Here, the waiting time zone will be a time zone different from the urban wastewater treatment time zone and the livestock wastewater treatment time zone.

5 is a flowchart for explaining the urban wastewater treatment process (S500) shown in FIG. 4 in more detail.

When the control unit 30 of the urban wastewater treatment apparatus 200 receives an urban wastewater treatment command from the central management device 400 (S510), the urban wastewater treatment operation in the urban wastewater treatment device 200 is controlled to be performed. do.

Accordingly, the first reaction tank 10 and the second reaction tank 20 installed in parallel with each other receive the raw water (urban wastewater) to be treated (S520). That is, the raw water to be treated (urban wastewater) stored in the raw water storage tank 1 flows into the first reaction tank 10 through the first pump 7 and the second reaction tank 20 through the second pump 9. ).

Subsequently, the first reaction tank 10 removes organic matter from the influent, and the second reaction tank 20 performs complete nitrite treatment on the influent water (S530).

That is, the first reactor 10 removes organic matter from the incoming raw water (urban wastewater) by utilizing the Sequencing Batch Reactor (SBR) method. That is, the first reaction tank 10 (effective volume: approximately 5 liters) is aerated and stirred when raw water (urban wastewater) flows in, and organic matter is removed by aerobic microorganisms to remove ammonium (NH ₄ ⁺ ) (that is, ammonia Treated water containing a large amount of nitrogen) is discharged. At this time, in order to avoid nitrification of ammonia in the introduced urban wastewater and to efficiently convert organic substances into biomass, the first reaction tank 10 has a short aeration time (about 30 to 60 minutes) and sludge residence time ( It is preferable to have SRT: about 2 to 5 days). In addition, since organic matter removal is less affected by temperature, the first reaction tank 10 is assumed to be operated at ambient temperature.

On the other hand, the second reactor 20 performs nitrite treatment on the incoming raw water (urban wastewater) using a Sequencing Batch Reactor (SBR) method. That is, the second reaction tank 20 (effective volume: approximately 10 liters) is aerated and agitated when the raw water to be treated (urban wastewater) flows in, and nitrite treatment is performed on the introduced raw water (urban wastewater) to treat nitrite. , NO ₂ ^- ) (ie, nitrous nitrogen) is discharged from the treated water. At this time, the duration of the aeration of the second reaction tank 20 is controlled based on the control unit 30 operating in real time, and the characteristic inflection point of the PH value (called “ammonium valley”) to achieve complete nitrite oxidation. ) Appears, aeration stops. In addition, in the nitrite treatment process in the second reaction tank 20, the second reaction tank 20 preferably maintains about 0.5 ~ 1.5 mg/L of dissolved oxygen (DO), and the effective sludge residence time is about 10 ~ Do it in about 15 days. The exchange ratio of the second reactor 20 is set to approximately 0.7 so as to provide as much nitrite as possible for the anamox process in the third reactor 40. In addition, the second reaction tank 20 is controlled to be operated at a temperature of approximately 23 ~ 25 ℃.

Thereafter, the treated water discharged from the first reaction tank 10 is stored in the first intermediate tank 3, and the treated water discharged from the second reaction tank 20 is stored in the second intermediate tank 5.

Then, the treated water stored in the first intermediate tank 3 is introduced into the third reaction tank 40 through the third pump 11, and the treated water stored in the second intermediate tank 5 is a fourth pump ( It is introduced into the third reaction tank 40 through 13). At this time, the treated water stored in the first intermediate tank 3 and the treated water stored in the second intermediate tank 5 are mixed at the front end of the inflow side of the third reaction tank 40 and then introduced (S540).

Finally, the third reaction tank 40 discharges wastewater from which nitrogen gas has been removed by nitrification and denitrification (S550).

That is, the third reaction tank 40 (effective volume; approximately 1 liter, diameter; 50 mm) receives the treated water from the first reaction tank 10 and the second reaction tank 20 to perform anammox treatment, The nitrite contained in the treated water from the second reaction tank 20 is used to oxidize the ammonium contained in the treated water from the first reaction tank 10 to make nitrate nitrogen (NO ₃ ^-- N). The wastewater from which nitrogen gas (N ₂ ) has been removed is discharged by denitrification. For example, wastewater pretreated in the first reaction tank 10 and the second reaction tank 20 is continuously pumped in the third reaction tank 40, and the upflow is approximately reduced by adjusting the recycle ratio to maintain good fluidization conditions. Adjust to 150 ml/min. In addition, the third reaction tank 40 is preferably controlled to be operated at a temperature of approximately 29 ~ 30 ℃. Anamox granular (granular) sludge used in the third reaction tank 40 is a synthetic wastewater simulating low-strength ammonia wastewater in order to achieve a high nitrogen removal rate (e.g., 5.17 kg N/(m ³ d)). NO ^- ₂ -N: 20 mg/L, NH ⁺ ₄ -N: 30 mg/L) can be used.

By the operation of the urban wastewater treatment apparatus 200 as described above, the efficiency of removing ammonia and TIN (total inorganic nitrogen) is improved.

According to an embodiment of the present invention, the central management device 400 uses a TVWS wireless communication using a TV white space (TVWS) band, the urban wastewater treatment device 200 and the livestock wastewater treatment device 300 And can communicate wirelessly.

TV Band Available Frequency (TVWS)) refers to a channel that is not used because it is not locally allocated among TV broadcast bands, and is an empty channel.TVWS-based wireless communication uses a frequency band of 1 GHz or more using a 470 to 698 MHz band. Compared to the communication method, radio wave characteristics are excellent, and wide coverage can be provided because a low frequency band is used.

Accordingly, in the case of wastewater treatment facilities of the same size, if a TVWS-based wireless communication is used, the installation and configuration cost of a network can be reduced by installing fewer wireless facilities than that using a general wireless communication.

In addition, TVWS-based wireless communication does not continuously incur costs, and can be applied in remote areas where the communication network does not reach, and the advantage of increasing the frequency utilization rate of limited TVWS channels by dividing the TVWS channel into multiple sub-channels. There is this.

For example, the central management device 400 accesses the server to receive a list of available TVWS channels, and includes peripheral devices including the urban wastewater treatment device 200 and the livestock wastewater treatment device 300 into a plurality of groups. It is classified, and a plurality of TVWS channels included in the TVWS channel list received by the server may be allocated to each classified group.

In addition, the central management device 400 sets the number of subchannels within a range in which traffic is not exceeded according to the amount of information transmission for each TVWS channel allocated for each group, and sets the TVWS channels allocated for each group according to the set number of subchannels. It may be divided into a plurality of TVWS sub-channels and allocated to the urban wastewater treatment apparatus 200 or the livestock wastewater treatment apparatus 300 included in the corresponding group.

Thereafter, the central management unit 400 transmits a city wastewater treatment command through the TVWS subchannel allocated to the city wastewater treatment unit 200, so that the city wastewater treatment unit 200 collects nitrogen from the city wastewater as described above. You can do the removal process.

And the central management unit 400 transmits a livestock wastewater treatment command through another TVWS sub-channel allocated to the livestock wastewater treatment device 300, so that the livestock wastewater treatment device 300 collects nitrogen from the livestock wastewater as described above. You can do the removal process.

6 is a block diagram showing an embodiment of a configuration of an automatic wastewater treatment system using wireless communication, and a description of the configurations of the illustrated system identical to those described with reference to FIGS. 1 to 5 will be omitted below. To

6, the central management device 400 is capable of various types of communication, has a storage space, and can be implemented in the form of hardware capable of predetermined calculations, and the urban wastewater treatment device 200 and livestock wastewater It may be installed inside or outside a wastewater treatment facility within a distance capable of communicating with the treatment device 300 and TVWS, or may be implemented in a mobile manner.

Meanwhile, the urban wastewater treatment apparatus 200 and the livestock wastewater treatment apparatus 300 may each include a TVWS communication module that enables TVWS communication, and serves as a repeater that relays signals from other devices to expand the TVWS communication area. Can perform

The server 500 plays a role of managing TVWS channels so that TVWS channels can be used efficiently, and for example, calculates or stores TVWS channel information available for a certain area and allowable transmission power of each TVWS channel, and manages centrally. When a TVWS channel request is received from the device 400, information on TVWS channels available in a wastewater treatment facility may be provided.

That is, the server 400 is one or more urban wastewater treatment devices 200, one or more livestock wastewater treatment devices 300, a central management device 400 and a central management device 400 disposed inside or outside the wastewater treatment facility. In addition, after receiving location information of devices capable of TVWS wireless communication, a list of TVWS channels available at a corresponding location among 37 channels of 470 to 698 MHz may be transmitted to the central management device 400.

In this case, the central management device 400 includes one or more urban wastewater treatment devices 200, one or more livestock wastewater treatment devices 300, the central management device 400, and others of the TVWS channel list received from the server 500. A link connection may be performed to enable TVWS-based wireless communication by selecting a TVWS channel most suitable for allocation to each of the devices capable of TVWS wireless communication, and assigning the selected TVWS channel to each device.

Through the TVWS channel connected as described above, the urban wastewater treatment device 200 and the livestock wastewater treatment device 300 respectively provide current status information (eg, current operating status, failure status, treated water status of each reaction tank, etc.) May be transmitted to the central management device 400, and the central management device 400 transmits a control signal such as an urban wastewater treatment command, a livestock wastewater treatment command, or a standby command as described above to the urban wastewater treatment device 200 or livestock wastewater. It can be transmitted to the processing device 300.

In addition, the central management device 400 may receive information on allowable transmission power of each TVWS channel together with a list of available TVWS channels from the server 500.

Meanwhile, the central management device 400 selects a TVWS channel from the list of available TVWS channels received from the server 500 according to at least one of coverage, transmission power, and ambient interference, and devices installed inside or outside the wastewater treatment facility. (In other words, it may be assigned to one or more urban wastewater treatment devices 200, one or more livestock wastewater treatment devices 300, a central management device 400, and other devices capable of TVWS wireless communication).

That is, the central management device 400 is among the TVWS channels included in the TVWS channel list received from the server 500, of the urban wastewater treatment device 200, the livestock wastewater treatment device 300, and the central management device 400. A TVWS channel capable of coverage may be selected, a TVWS channel having the largest transmission power allocation may be selected, or a TVWS channel having the least interference may be selected and allocated to each device.

At this time, the central management device 400 selects one TVWS channel capable of coverage of all devices installed inside or outside the wastewater treatment facility from the channel list received from the server 500 and allocates it as a whole, and a time division communication method or code It is possible to perform wireless communication between the urban wastewater treatment device 200, the livestock wastewater treatment device 300, and the central management device 400 through one TVWS channel by applying various divided communication methods such as a divided communication method. .

On the contrary, the central management device 400 includes one or more urban wastewater treatment devices 200, one or more livestock wastewater treatment devices 300, and a central management device 400 installed in an adjacent area inside or outside the wastewater treatment facility. Other TVWS wireless communication devices are classified into a plurality of groups, grouped, and TVWS channels are allocated for each group, and then the central management unit 400, urban wastewater treatment unit 200, and livestock wastewater are applied by applying a multi-hop method. By linking the processing device 300 and applying various divided communication methods such as a time division communication method or a code division communication method, wireless communication may be performed with each other through each TVWS channel.

Meanwhile, the central management device 400 divides the TVWS channel selected from the TVWS channel list received from the server 500 into a plurality of sub-channels, and includes at least one urban wastewater treatment device 200 and one or more livestock wastewater treatment devices 300. ), by allocating at least one TVWS subchannel to each of the central management device 400 and other devices capable of TVWS wireless communication, so that the central management device 400 provides the urban wastewater treatment device 200 and the livestock wastewater treatment device 300 ) And wireless communication.

Tomzen, the central management device 400 provides TVWS subchannels to one or more urban wastewater treatment devices 200, one or more livestock wastewater treatment devices 300, a central management device 400, and other devices capable of TVWS wireless communication. Grouping and allocation, and applying various divided communication methods such as a time division communication method or a code division communication method, it is possible to wirelessly communicate with each other through at least one TVWS subchannel.

In this case, the central management apparatus 400 may set the number of subchannels for each of the TVWS channels so as not to cause excessive traffic in consideration of the amount of information transmitted through each subchannel.

Through the TVWS sub-channel allocated as described above, the municipal wastewater treatment device 200 and the livestock wastewater treatment device 300 respectively provide current status information (e.g., current operating status, failure status, treated water status of each reaction tank). Etc.) can be transmitted to the central management device 400, and the central management device 400 transmits a control signal such as an urban wastewater treatment command, a livestock wastewater treatment command, or a standby command as described above to the urban wastewater treatment device 200 or It can be transmitted to the livestock wastewater treatment apparatus 300.

As described above, the TVWS-based communication method in a wastewater treatment facility may be implemented as an application or implemented in the form of program commands that may be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, or the like alone or in combination.

As described above, an optimal embodiment has been disclosed in the drawings and specifications. Although specific terms have been used herein, these are only used for the purpose of describing the present invention and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

1: raw water storage tank 3: first intermediate tank
5: second intermediate tank 7: first pump
9: second pump 10: first reaction tank
11: third pump 13: fourth pump
20: second reaction tank 30: control unit
40: third reaction tank 100: user terminal
200: urban wastewater treatment device 300: livestock wastewater treatment device
400: central management device 500: server

Claims (2)

A municipal wastewater treatment unit that removes nitrogen from the municipal wastewater to be treated according to the command of the central management unit;
A livestock wastewater treatment device for removing nitrogen from livestock wastewater to be treated according to the command of the central management device; And
City wastewater treatment time zone information and livestock wastewater treatment time zone information are received in advance from the user's portable terminal and stored in the form of a lookup table, and urban wastewater treatment and livestock production based on the urban wastewater treatment time zone information and the livestock wastewater treatment time zone information It is determined which one of the wastewater treatment is to be performed, and when it is determined that the urban wastewater treatment is to be performed, a command for urban wastewater treatment is transmitted to the urban wastewater treatment device, and the livestock wastewater treatment is to be performed. Including; if it is determined that the case, the central management device for transmitting a livestock wastewater treatment command to the livestock wastewater treatment device,
The urban wastewater treatment device,
A first reaction tank for removing organic nitrogen from organic matters of urban wastewater introduced from the raw water to be treated to discharge first treated water containing ammonium through a first outlet valve;
A second reaction tank connected in parallel with the first reaction tank in response to the raw water to be treated, and nitridizing the incoming municipal wastewater to discharge second treated water including nitrite through a second outlet valve;
A first intermediate tank for storing the first treated water discharged from the first reaction tank;
A second intermediate tank for storing the second treated water discharged from the second reaction tank;
It is connected to the first intermediate tank through a first inlet pipe, and connected to the second intermediate tank through a second inlet pipe, so that the first treated water flows through the first inlet pipe, and the second inlet When the second treated water flows through the pipe, the mixture of the first treated water and the second treated water is subjected to anaerobic ammonium oxidation using a granular sludge bed (GSB) method and denitrification of nitrate nitrogen. A third reaction tank wrapped in a black cloth to discharge wastewater from which nitrogen gas has been removed by performing a digestion treatment, and to protect the granules of Anamox from light; And
Includes; a control unit for controlling the operation of the first, second, and third reaction tanks,
The control unit
Control the first intermediate tank and the first inlet pipe, the second intermediate tank and the second inlet pipe according to the municipal wastewater treatment command of the central management device, and the first, second and third reaction tanks Controls at least one of the reaction temperature, residence time, outlet valve, and aeration time of each of them, and the aeration time of the second reaction tank is based on the PH concentration measured for the municipal wastewater flowing into the second reaction tank and being treated. Is controlled to vary according to the
The third reaction tank of the urban wastewater treatment device,
A shear mixing unit configured to mix the first treated water and the second treated water introduced from the first inlet pipe and the second inlet pipe at a predetermined ratio; And
Automatic wastewater treatment system comprising a; orifice-shaped rear-stage reaction tank formed to reduce the diameter from the bottom to the center portion is smaller than the diameter of the upper portion higher than the central portion. The method of claim 1,
The central management device wirelessly communicates with the urban wastewater treatment device and the livestock wastewater treatment device using TVWS wireless communication using an available frequency band of the TV band,
The central management device accesses the server to receive a list of available TVWS channels, classifies peripheral devices including the urban wastewater treatment device and the livestock wastewater treatment device into a plurality of groups, and is included in the TVWS channel list. TVWS channels are allocated for each group, and the number of subchannels is set within a range in which traffic is not exceeded according to the information transmission amount for each of the TVWS channels allocated for each group. The TVWS channel is divided into a plurality of TVWS sub-channels and allocated to the urban wastewater treatment unit or the livestock wastewater treatment unit included in the group, and through the TVWS subchannel assigned to the urban wastewater treatment unit or the livestock wastewater treatment unit. Automatic wastewater treatment system for transmitting the municipal wastewater treatment command or the livestock wastewater treatment command.

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