KR20220056565A - Apparatus and method for remote automatic injection of coagulant for smart sewage treatment - Google Patents

Abstract

According to one embodiment, provided is a method for injecting a coagulant, including the steps of: performing rapid agitation on raw water and a coagulant in a rapid agitation tank; performing slow agitation on the agitation water obtained as a result of performing the rapid agitation in a slow agitation tank; determining the pH of the agitation water in which the slow agitation is performed; and updating at least one of the hourly input amount of the raw water introduced to the rapid agitation tank, the hourly injection amount of the coagulant, and the hourly input amount of a pH adjusting material according to the pH of the agitation water.

Description

Remote automatic injection device and method for coagulant for smart sewage treatment

The present disclosure relates to an apparatus and method for remote automatic coagulant injection for smart sewage treatment, and more particularly, by efficiently controlling a process related to automatic coagulant injection according to the pH of agitated water, pollutants can be effectively coagulated in raw water It relates to an apparatus and method that can improve sewage treatment performance by providing an environment where there is a good environment, and can improve user convenience by enabling monitoring and remote control of agitation status based on smart devices.

In general, a coagulant such as polyaluminum chloride (PAC) is injected to remove pollutants contained in sewage, and it is changed to purified sewage and discharged. Flocculant should be injected.

Conventionally, the sewage treatment process was managed by measuring the turbidity of the sewage, determining the injection amount of the coagulant in consideration of the remaining amount of the coagulant, and then injecting the set amount at a set time. However, this conventional method has a problem in that water treatment efficiency is greatly reduced because sewage treatment does not proceed smoothly when the situation worsens because it does not reflect the situation that varies depending on the state of the sewage, the purification process, and the like.

Accordingly, the demand for technology capable of overcoming the above-described problems is gradually increasing.

Korean Patent Laid-Open No. 10-2014-0059557 (2014.05.16), a water treatment device equipped with a means for adjusting the amount of coagulant injection and a method for controlling the amount of coagulant injection

An embodiment of the present disclosure is intended to solve the problems of the prior art described above, and by efficiently controlling the conditions for automatic injection of the flocculant according to the pH of the stirring water, an environment in which contaminants can be efficiently aggregated in raw water is created. In this way, sewage treatment performance can be improved, and real-time monitoring and remote control of the stirring state based on a smart device can be provided, thereby providing an apparatus and method that can improve user convenience.

The purpose of the present disclosure is not limited to the above-mentioned purpose, and other objects not mentioned will be clearly understood from the description below.

A method of injecting a flocculant according to the first aspect of the present disclosure includes: performing rapid stirring of raw water and a flocculant in a rapid stirring tank; performing slow stirring on the stirring water obtained as a result of performing the rapid stirring in a slow stirring tank; determining the pH of the stirring water in which the slow stirring is performed; and updating at least one of the hourly input amount of the raw water applied to the rapid stirring tank, the hourly injection amount of the coagulant, and the hourly input amount of the pH adjusting material according to the pH of the stirring water.

In addition, the step of updating at least one of the hourly inflow amount of the raw water applied to the rapid stirring tank, the hourly injection amount of the flocculant, and the hourly inflow amount of the pH adjusting material according to the pH of the stirring water is that the pH of the stirring water is a preset standard When the pH is below the pH, the hourly inflow of the pH adjusting material, the hourly inflow of the raw water, and the hourly injection of the flocculant may be determined according to the highest priority in the order of the pH adjusting material, the raw water, and the flocculant.

In addition, the step of updating at least one of the hourly inflow amount of the raw water applied to the rapid stirring tank, the hourly injection amount of the coagulant, and the hourly inflow amount of the pH adjusting material according to the pH of the stirring water is that the pH of the stirring water is the first standard When the pH is less than or equal to the pH, the hourly inflow of the pH adjusting material is increased to more than a preset first value, and when the pH of the stirring water is less than or equal to the second reference pH, the hourly inflow of the raw water is increased to more than the preset second value, , when the pH of the stirring water is less than or equal to the third reference pH, the hourly injection amount of the coagulant is reduced to less than or equal to a preset third value, the first reference pH is greater than the second reference pH, and the second reference pH is It may be greater than the third reference pH.

In addition, the hourly inflow of the increasing pH adjusting material is proportional to the difference between the pH of the stirring water and the first reference pH, and the hourly inflow of the increased raw water is the difference between the pH of the stirring water and the second reference pH In proportion to, the hourly injection amount of the coagulant to be decreased may be inversely proportional to a difference between the pH of the stirring water and the third reference pH.

In addition, the step of updating at least one of the hourly inflow amount of the raw water applied to the rapid stirring tank, the hourly injection amount of the coagulant, and the hourly inflow amount of the pH adjusting material according to the pH of the stirring water is that the pH of the stirring water is the fourth standard When the pH is less than, the rapid stirring speed indicating the rotation speed of the stirrer performing the rapid stirring or the slow stirring speed indicating the rotation speed of the stirrer performing the slow stirring may be increased to a preset fourth value or more.

In addition, the method includes the steps of providing stirring information including the pH of the stirring water, the hourly inflow of the raw water, the hourly injection amount of the flocculant and the hourly inflow amount of the pH adjusting material to the user terminal; and receiving a user input for at least one of an hourly inflow of the raw water, an hourly injection amount of the flocculant, and an hourly inflow amount of the pH adjusting material from the user terminal; and updating at least one of the hourly input amount of the raw water, the hourly injection amount of the flocculant, and the hourly input amount of the pH adjusting material based on the user input.

In addition, the step of providing the stirring information to the user terminal may include: determining the degree of urgency based on the pH of the stirring water, the hourly inflow of the raw water, the hourly injection of the flocculant, and the hourly inflow of the pH adjusting material; and if the urgency is greater than or equal to a preset value, transmitting a warning message including the urgency to the user terminal.

The apparatus for injecting the flocculant according to the second aspect of the present disclosure includes: a rapid stirring tank for performing rapid stirring of raw water and the flocculant; a slow stirring tank for performing slow stirring for the stirring water obtained as a result of performing the rapid stirring; and determining the pH of the stirring water in which the slow stirring is performed, and at least one of an hourly inflow of the raw water applied to the rapid stirring tank according to the pH of the stirring water, an hourly injection of the flocculant, and an hourly inflow of a pH adjusting material It may include; a processor that updates the.

In addition, when the pH of the stirring water is less than or equal to the preset reference pH, the processor is configured to: the hourly inflow of the pH adjusting material, the hourly inflow of the raw water and It is possible to determine the injection amount per hour of the coagulant.

In addition, when the pH of the stirring water is less than or equal to a first reference pH, the processor increases the hourly inflow of the pH adjusting material to a preset first value or more, and when the pH of the stirring water is less than or equal to a second reference pH, the The hourly inflow of raw water is increased to more than the second preset value, and when the pH of the stirring water is less than or equal to the third reference pH, the hourly injection amount of the coagulant is reduced to less than or equal to the third preset value, and the first reference pH is It may be greater than the second reference pH, and the second reference pH may be greater than the third reference pH.

A third aspect of the present disclosure may provide a computer program stored in a recording medium to implement the method according to the first aspect. Alternatively, the fourth aspect of the present disclosure may provide a computer-readable recording medium in which a program for executing the method according to the first aspect is recorded on a computer.

According to an embodiment of the present disclosure, it is possible to improve sewage treatment performance by creating an environment in which contaminants can efficiently aggregate in raw water by efficiently controlling the conditions for automatic injection of the coagulant according to the pH of the stirring water.

In addition, real-time monitoring and remote control of the stirring state based on a smart device can improve user convenience.

The effect of the present disclosure is not limited to the above effect, but it should be understood to include all effects inferred from the configuration of the invention described in the detailed description or claims of the present disclosure.

1 is a diagram schematically illustrating the configuration of an automatic coagulant injection system for sewage treatment according to an embodiment.
2 is a block diagram illustrating the configuration of a coagulant injection device according to an embodiment.
3 is a block diagram showing an example of the configuration of the coagulant injection device shown in FIG. 2 in more detail.
4 is a view for explaining the operation of the coagulant injection device according to an embodiment to control the pH of the stirring water according to the high priority in the order of the pH adjusting material, raw water, and the coagulant.
5 is a view for explaining the operation of the coagulant injection device according to an embodiment to control the pH of the stirring water according to the high priority in the order of the pH adjusting material, raw water, and the coagulant.
6 is a view for explaining an operation of providing agitation information to a user terminal by the coagulant injection device according to an embodiment.
7 is a flowchart illustrating an example of a method for injecting a coagulant by the coagulant injection device according to an embodiment.

Terms used in the embodiments are selected as currently widely used general terms as possible while considering functions in the present disclosure, but may vary according to intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present disclosure should be defined based on the meaning of the term and the contents of the present disclosure, rather than the simple name of the term.

In the entire specification, when a part “includes” a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, the “… wealth", "… The term “module” means a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.

Throughout the specification, 'providing' can be broadly interpreted as including a process in which a target acquires specific information or transmits/receives directly or indirectly to a specific target, and comprehensively includes the performance of a related operation required in this process. In addition, 'support' may be broadly interpreted as meaning including the performance of a related operation to achieve a specific purpose, and is not construed as limiting.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present disclosure pertains can easily implement them. However, the present disclosure may be implemented in several different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

1 is a diagram schematically showing the configuration of an automatic coagulant injection system 1000 for sewage treatment according to an embodiment.

Referring to FIG. 1 , an automatic coagulant injection system 1000 for sewage treatment according to an embodiment may include a coagulant injection device 100 , a monitoring server 200 , and a user terminal 300 .

The coagulant injection device 100 according to an embodiment corresponds to a device capable of injecting the coagulant into a stirring tank in which raw water and the coagulant are stirred. In one embodiment, the coagulant injection device 100 may include a computing device that operates through a computer program for realizing the functions described herein, and the monitoring server 200 and the user terminal 300 through the network. It may include a wired/wireless communication device that can be connected to one or more of them. Here, the network may be configured through various communication networks such as wired and wireless, and in one embodiment, a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN) Area Network), etc., may be configured as various communication networks, and for example, may be connected to the monitoring server 200 through a network sharer (eg, a hub) to communicate with each other.

The monitoring server 200 according to an embodiment corresponds to a server for monitoring coagulant injection, and may include all types of wired/wireless communication devices that can be connected to other devices (eg, servers, terminals) through a network.

In an embodiment, the user terminal 300 is implemented as various types of handheld-based wireless communication devices such as a mobile phone, a smart phone, a personal digital assistant (PDA), a portable multimedia player (PMP), a tablet PC, or the like. , desktop PCs, tablet PCs, and laptop PCs may include various types of wired and wireless communication devices that are connected to the vehicle report server and have a basis for installing and executing applications.

The user terminal 300 according to an embodiment may install an application for a remote automatic injection service of a coagulant for smart sewage treatment and store it in a memory. For example, the monitoring server 200 provides an application for remote automatic injection service of a coagulant for smart sewage treatment to the user terminal 300, and is connected to the user terminal 300 through an application installed in the user terminal 300. We can provide various services related to flocculant monitoring (eg monitoring of flocculent and stirring conditions, remote control of flocculant injection, etc.).

In addition, other general-purpose components in addition to the components shown in FIG. 1 may be further included in the automatic coagulant injection system 1000 for sewage treatment, or according to another embodiment, among the components shown in FIG. Some components may be omitted.

2 is a block diagram illustrating the configuration of the coagulant injection device 100 according to an embodiment, and FIG. 3 is a block diagram illustrating an example of the configuration of the flocculant injection device 100 shown in FIG. 2 in more detail. am.

2 to 3 , the coagulant injection device 100 according to an embodiment includes a rapid stirring tank 110 , a slow stirring tank 120 and a processor 130 , a pH sensor 125 , and raw water At least one of the storage tank 140, the coagulant pump 150, the pH adjusting material pump 160, the settling tank 170, the effluent storage tank 180, the sludge pump 190, and the sludge drawing 195 may be further included. .

The rapid stirring tank 110 may perform rapid stirring of raw water and the coagulant. More specifically, the rapid stirring tank 110 performs rapid stirring by mixing the raw water supplied from the raw water storage tank 140 and the coagulant injected from the coagulant pump 150 at a preset speed or higher, and the result of the rapid stirring is obtained The stirring water to be used may be provided to the slow stirring tank 120 . For example, the rapid stirring tank 110 rotates the stirrer provided in the rapid stirring tank 110 at a preset rapid rotation speed (eg, 100 rpm) to primarily mix raw water and the coagulant, and primary mixing The obtained agitation water may be supplied to the slow agitation tank 120 through a pump provided in the rapid agitation tank 110 .

Here, raw water represents sewage in a state that has not yet been purified since it is introduced for sewage treatment, and the coagulant represents a substance injected to coagulate pollutants in raw water. In one embodiment, the coagulant may use a titanium salt-based coagulant, for example, titanium tetrachloride (TiCl ₄ ), but is not limited thereto, and to purify raw water such as iron salt, PAC, etc. It may include a variety of other agglomerate materials that may be employed.

In addition, the agitation water refers to sewage purified by stirring, and in one embodiment, a product produced through a chemical reaction between raw water and a coagulant according to rapid stirring or slow stirring (eg, agglomeration generated by aggregation of contaminants in raw water) Floc, etc.), simple mixed or state change or ionized raw water, coagulant and other substances, etc., can be understood as a concept encompassing rapidly stirred in the rapid stirring tank 110 or in the slow stirring tank 120 Objects that are slowly stirred can be generically referred to.

In one embodiment, the rapid stirring tank 110 may supply at least a portion of the stirring water to the slow stirring tank 120 based on a preset first effective volume, for example, is supplied from the raw water storage tank 140 The raw water is stored in the stirrer, and the stirring water exceeding the preset first effective volume (eg, 10 L) of the stirring water obtained by rapidly stirring the coagulant injected from the coagulant pump 150 with the raw water is slowly stirred in the stirring tank 120 . It can be overflowed toward or moved into the slow stirring tank 120 through the built-in pump.

The slow stirring tank 120 may perform slow stirring for the stirring water obtained as a result of the rapid stirring. More specifically, the slow stirring tank 120 may perform slow stirring in which the stirring water supplied from the rapid stirring tank 110 is mixed at less than a preset speed, for example, provided in the slow stirring tank 120 . By rotating the agitator at a preset slow rotation speed (eg 10 rpm), the raw water and the coagulant in the stirring water are mixed secondarily, and the result obtained by the secondary mixing (eg supernatant water, sludge) may be supplied to the settling tank 170 through a pump provided in the slow stirring tank 120 .

In one embodiment, the slow stirring tank 120 may supply at least a portion of the stirring water to the settling tank 170 based on a preset second effective volume, for example, stirring supplied from the rapid stirring tank 110 The water is stored in the stirrer, the stirring water is slowly stirred to allow the growth of flocculation in the stirrer, and the stirring water exceeding the preset second effective volume (eg 200 L) in the slowly stirred stirring water is placed in a settling tank ( By overflowing toward 170) or moving into the settling tank 170 through the built-in pump, the supernatant water and the sludge can be supported to be separated from the agitated water through sedimentation in the settling tank 170

The processor 130 may determine the pH of the stirring water in which the slow stirring is performed, for example, the slow stirring is performed in the slow stirring tank 120 from the pH sensor 125 located in the slow stirring tank 120 . The pH of the stirring water can be received. In one embodiment, the pH sensor 125 is attached to the slow stirring tank 120 to sense the pH information of the stirring water, and includes a transmitter capable of transmitting the sensed pH information to the processor 130 through the network. can do. In one embodiment, the processor 130 associates the pH information with the slow stirring tank identifier corresponding to the sensor identifier based on the sensor identifier and the pH information received at a preset period from the pH sensor 125 to the slow stirring tank 120 . can be stored and managed in real time.

The processor 130 may update at least one of an hourly inflow amount of raw water applied to the rapid agitation tank 110, an hourly injection amount of the coagulant, and an hourly inflow amount of the pH adjusting material according to the pH of the stirring water. In one embodiment, the pH adjusting material is for adjusting the pH of the stirring water, and may be injected into the rapid stirring tank 110 by the pH adjusting material pump 160 connected to the rapid stirring tank 110, for example For example, it may include at least one of an acidic material and a basic material, and may include, for example, sodium hydroxide (NaOH), but is not limited thereto, and other alkali materials that can be used as neutralizers, acid Substances or neutralizing substances may be included.

For example, when the pH of the stirring water is within a preset normal pH range, the processor 130 controls the pump of the raw water storage tank 140 and the coagulant pump 150 to respectively control the raw water supplied to the rapid stirring tank 110 . and the application period and amount of the coagulant can be maintained at a preset standard value, and when the pH of the stirring water becomes smaller than the preset normal pH range, a pH adjustment capable of injecting the pH adjusting material into the rapid stirring tank 110 By operating the material pump 160, it is possible to control so that the pH adjusting material is injected into the rapid stirring tank 110 according to a preset application cycle and application amount until the pH of the stirring water is confirmed within the normal pH range.

That is, if the pH of the stirring water is lower than the reference value, the aggregation rate decreases and the purification effect on contaminants may decrease. By rapidly increasing the pH of the stirred water according to the rapid mixing and then moving it to the slow stirring tank 120 , it is possible to effectively control the pH of the stirred water in the slow stirring tank 120 to quickly return to an appropriate range.

In one embodiment, when the pH of the stirring water is less than or equal to the preset reference pH, the processor 130 may determine at least one of an hourly inflow of a pH adjusting material, an hourly inflow of raw water, and an hourly injection of a flocculant according to a preset priority. there is. This will be described in more detail with further reference to FIGS. 4 to 5 .

4 to 5 are diagrams for explaining the operation of the coagulant injection device 100 according to an embodiment to control the pH of the stirring water according to the highest priority in the order of the pH adjusting material, raw water, and the coagulant.

Referring to FIG. 4 , when the pH of the stirring water is less than or equal to the preset reference pH, the processor 130 determines the hourly inflow of the pH adjusting material, the hourly inflow of the raw water and The hourly dose of flocculant can be determined. For example, when the pH of the stirring water is less than or equal to the first reference pH (eg, pH 5.5), the hourly inflow of the pH adjusting material is increased to a predetermined first value or more, and the pH of the stirring water is adjusted to the second reference pH (eg, pH 5.5) : pH 5.0) or less, the hourly inflow of raw water is increased to more than the second preset value, and when the pH of the stirring water is less than or equal to the third reference pH (eg, pH 4.5), the hourly injection amount of the coagulant is set to the preset third value can be reduced below.

In one embodiment, the first reference pH (eg, pH 5.5) is greater than the second reference pH (eg, pH 5.0), and the second reference pH (eg, pH 5.0) is a third reference pH (eg, pH 4.5) It may be greater than, for example, the difference between the first reference pH and the second reference pH and the difference between the second reference pH and the third reference pH may be a preset value (eg, 0.5). In an embodiment, the difference (eg, 1.0) between the first reference pH and the second reference pH may be greater than the difference (eg, 0.5) between the second reference pH and the third reference pH.

That is, when the pH of the stirring water becomes smaller than the first reference pH (eg, pH 5.5), the application of the pH adjusting material is started, and when the pH of the stirring water becomes smaller than the second reference pH (eg, pH 5.0), the inflow cycle and the inflow amount of the raw water also increase. When the pH is lower than the third reference pH (eg, pH 4.5), the injection cycle and injection amount of the flocculant can be controlled sequentially according to priority.

Referring to FIG. 5 , the processor 130 may determine an increase or decrease in the hourly input amount of the pH adjusting material, the hourly input amount of raw water, and the hourly injection amount of the coagulant based on the difference between the pH of the stirring water and the reference pH. For example, in the case of the hourly inflow of the pH adjuster, the 1-1 value is the first pH range (eg, pH 5.1 to 5.5) with a small difference from the reference pH (eg, pH 5.5), and the reference pH (eg, pH) : The second pH range (e.g. pH 4.6 to 5.0) with a moderate difference from pH 5.5), and the second pH value (e.g. pH 4.1 to 4.5), it may be determined as the 1-3th value, and may be greater in the order of the 1-3th value, the 1-2th value, and the 1-1th value (eg, the 1-1 value < 1st value) -2 values < 1-3 values). Similarly, the hourly injection amount of raw water and coagulant may also be determined as shown in FIG. 5, which is large in the order of the 2-3th value, the 2nd-2nd value, and the 2-1th value, and the 3-2th value and the 3rd value It can be large in the order of 3-1 values.

In one embodiment, the hourly inflow amount of the pH adjusting material to be increased is proportional to the difference between the pH of the stirring water and the first reference pH, and the hourly inflow amount of the raw water to be increased is proportional to the difference between the pH of the stirring water and the second reference pH, and , the hourly injection amount of the coagulant to be reduced may be inversely proportional to the difference between the pH of the stirring water and the third reference pH. For example, when the pH of the stirring water is below the first reference pH, the hourly inflow (I ₁ ) of the pH adjusting material, when the pH of the stirring water is below the second reference pH (I 2 ), the hourly inflow of the raw water (I ₂ ), and the stirring water When the pH is less than or equal to the third reference pH, the injection amount per hour (I ₃ ) of the flocculant may be determined based on Equation 1 below.

[Equation 1]

I ₁ = C ₁ x I ₀₁ x (P ₁ - P)

I ₂ = C ₂ x I ₀₂ x (P ₂ - P)

I ₃ = C ₃ x I ₀₃ / (P ₃ - P)

(Here, P ₁ , P ₂ and P ₃ represent the first reference pH, the second reference pH, and the third reference pH, respectively, P represents the pH of the stirring water, and I ₀₁ , I ₀₂ and I ₀₃ are each Represents the initial inflow or initial injection amount of the pH adjuster, raw water and flocculant, and C ₁ , C ₂ and C ₃ represent design constants that can be set by the designer to control the pH adjuster inflow, raw water inflow, and flocculant injection amount, respectively )

Referring to FIG. 5 , when the pH of the stirring water is less than or equal to the fourth reference pH, the processor 130 may increase the rapid stirring speed and/or the slow stirring speed to a predetermined fourth value or more. Here, the rapid stirring speed indicates the rotation speed of the stirrer performing rapid stirring, and the slow stirring speed indicates the rotation speed of the stirrer performing the slow stirring. For example, when the pH of the stirring water becomes smaller than the fourth reference pH (eg, 4.0), the processor 130 determines that the aggregation rate is excessively low due to excessively decreasing the pH, and a predetermined specific time (eg: 10 minutes) temporarily change the rotation speed of the rapid stirring tank 110 from the 4-1 value (eg 100 rpm) to the 4-2 value (eg 150 rpm), the rotation speed of the slow stirring bath 120 may be increased from the 4-3 value (eg, 10 rpm) to the 4-4 value (eg, 20 rpm).

In an embodiment, the increased rapid stirring speed or slow stirring speed may be proportional to the difference between the pH of the stirring water and the fourth reference pH, and may be determined based on Equation 2 below.

[Equation 2]

I ₄ = C ₄ x R ₀₄ x (P ₄ - P)

(Here, P ₄ represents the fourth reference pH, P represents the pH of the stirring water, R ₀₄ represents the initial value of the rapid stirring speed or the slow stirring speed, and C ₄ is the stirring speed by the designer for controlling the stirring speed. indicates a design constant that can be set)

6 is a view for explaining an operation in which the coagulant injection apparatus 100 according to an embodiment provides stirring information to the user terminal 300 .

Referring to FIG. 6 , the processor 130 may provide stirring information including the pH of the stirring water, the hourly inflow of raw water, the hourly injection amount of the coagulant, and the hourly inflow amount of the pH adjusting material to the user terminal 300 . For example, the processor 130 provides stirring information updated at a preset cycle to the user terminal 300 through the monitoring server 200, and the user terminal 300 has a preset administrator account and password through a pre-installed application. In the case of authentication, the real-time pH value of the stirring water, a graph showing the pH change over time, the hourly input amount of the currently set pH adjusting material, the hourly injection amount of the coagulant, etc. can be displayed.

In one embodiment, the stirring information includes the pH of the stirring water, the difference between the pH of the stirring water and the reference pH, the inflow cycle and inflow amount of raw water, the injection cycle and injection amount of the coagulant, the inflow cycle and inflow amount of the pH adjusting material, and the raw water storage tank 140 . The amount of raw water in the inside, the amount of stirring water in the rapid stirring tank 110, the amount of movement per hour of the stirring water moved from the rapid stirring tank 110 to the slow stirring tank 120, the stirring in the slow stirring tank 120 The amount of water, the hourly movement amount of agitated water moving from the slow stirring tank 120 to the settling tank 170, the amount of supernatant water and sludge in the settling tank 170, the hourly discharge amount and sludge of the supernatant water discharged from the effluent storage tank 180 It may include the amount of drawing per hour of the sludge drawn in the drawing 195, and the like.

In one embodiment, the processor 130 generates agitation information at a preset period and transmits it to the monitoring server 200, the monitoring server 200 may store and monitor real-time stirring information, and the user terminal 300 may Stirring information received from the monitoring server 200 may be displayed through an application. In another embodiment, the processor 130 may be connected to the user terminal 300 through a short-range wireless network to transmit stirring information to the user terminal 300 at a preset period.

In one embodiment, the information about the hourly inflow of raw water, the hourly injection amount of the flocculant, and the hourly inflow amount of the pH adjusting material included in the stirring information is whether the pH of the stirring water is included in any one of the first to third pH ranges It may be visually distinguished and displayed depending on whether or not there is. For example, when the pH of the stirring water is in the first pH range, the user terminal 300 displays information about the pH of the stirring water and the hourly inflow amount of the pH adjusting material in a first color (eg, yellow), When the pH of the stirring water is in the second pH range, information about the pH of the stirring water, the hourly inflow of the pH adjusting material, and the hourly inflow of the raw water is displayed in a second color (eg, red), and the pH of the stirring water is When it is in the third pH range, information on the pH of the stirring water, the hourly inflow of the pH adjusting material, the hourly inflow of the raw water, and the hourly injection of the flocculant can be displayed by flashing in a third color (eg, red).

In one embodiment, the processor 130 receives a user input for at least one of an hourly inflow of raw water, an hourly injection amount of a coagulant, and an hourly inflow amount of a pH adjusting material from the user terminal 300, and based on the received user input At least one of the hourly input amount of raw water, the hourly injection amount of the flocculant, and the hourly input amount of the pH adjusting material may be updated. For example, as shown in Figure 6, the user terminal 300 through the application the target pH (eg, reference pH) of the stirring water, the hourly inflow of the pH adjusting material, the hourly inflow of raw water, the hourly injection of the flocculant, etc. It provides input fields for receiving user input, and transmits the user input received through each input field to the processor 130 through the monitoring server 200, and the processor 130 reflects the received user input to agitate water. It is possible to update the target pH of , the hourly inflow of the pH adjusting material, the hourly inflow of raw water, and the hourly injection of the flocculant.

In an embodiment, when a user input for an emergency notification is received from the user terminal 300 , the processor 130 may operate a preset emergency mode to output a warning sound or a warning message.

In one embodiment, the processor 130 determines the urgency based on the pH of the stirring water, the hourly inflow of raw water, the hourly injection amount of the flocculant, and the hourly inflow amount of the pH adjusting material, and if the urgency is greater than or equal to a preset value, the urgency A warning message including a may be transmitted to the user terminal 300 . For example, the processor 130 determines that the greater the difference between the pH of the stirring water and the reference pH, the greater the difference between the initial value and the current set value of the input amount per hour or the injection amount per hour for each raw water, the coagulant and the pH adjusting material, the greater the degree of urgency can be determined to be high. For another example, if only the pH difference of the stirring water is large, the pH can be controlled through the raw water, the coagulant, and the pH adjusting material. If the urgency is higher than the first urgency, the urgency can be set to a second urgency that is greater than the first urgency because the pH is low even though the pH is sufficiently controlled through the raw water, the coagulant and the pH adjusting material.

In one embodiment, the processor 130 is the difference between the pH of the stirring water and the reference pH, the difference between the initial value and the current set value of the hourly inflow of the pH adjusting material, and the initial value of the hourly inflow of the raw water and the current set value The urgency may be calculated by giving high weights in the order of the difference and the difference between the initial value of the injection amount per hour of the coagulant and the current set value.

In an embodiment, the processor 130 transmits a warning message to the monitoring server 200 if the urgency is greater than or equal to the first urgency, and transmits a warning message to the user terminal 300 if the urgency is greater than or equal to a second urgency greater than the first urgency. ), and when the third urgency is greater than the second urgency, the emergency mode may be operated to output a warning sound through the sound module built into the coagulant injection device 100 .

The processor 130 according to an embodiment may be implemented as a central processor unit (CPU) that controls the overall operation of the flocculant injection device 100 , and electrically or network with the components of the flocculant injection device 100 . It may be connected through the control unit to control the data flow between them, or may be included in at least one of the components of the coagulant injection device 100 to control each function.

In an embodiment, the raw water storage tank 140 may store raw water to be supplied to the rapid agitation tank 110 , and may include a pump for applying raw water to the rapid agitation tank 110 under the control of the processor 130 . there is. In addition, in one embodiment, the coagulant pump 150 may apply the coagulant to the rapid agitation tank 110 under the control of the processor 130 , and a storage tank for storing the coagulant to be applied to the rapid agitation tank 110 . may include Also, in one embodiment, the pH adjusting material pump 160 may apply a pH adjusting material to the rapid stirring tank 110 under the control of the processor 130 , and adjusting the pH to be applied to the rapid stirring tank 110 . It may include a reservoir for storing the material.

In one embodiment, the settling tank 170 may store the stirring water supplied from the slow stirring tank 120 and separate supernatant water and sludge from the stirring water through precipitation induced for a predetermined specific time. For example, a portion of the agitated water overflowing from the slow agitation tank 120 in excess of an effective volume (eg, 200L) is precipitated, and the supernatant water corresponding to the remainder is connected to the settling tank 170 . It may be moved to the effluent storage tank 180 through a pipe.

In one embodiment, the effluent storage tank 180 may discharge the supernatant water supplied from the settling tank 170 , and the sludge pump 190 is installed in the lower part of the settling tank 170 to remove the sludge deposited in the settling tank 170 . The sludge drawing 195 may be used for drawing, and the sludge drawing 195 may store the sediment including the drawn sludge.

In addition, it can be understood by those skilled in the art that other general-purpose components other than those shown in FIGS. 2 to 3 may be further included in the coagulant injection device 100 . For example, the coagulant injection device 100 may further include a communication module for communicating with the monitoring server 200 or the user terminal 300 through a network, a display for outputting information, and the like. In addition, at least one of the components of the coagulant injection device 100 may be implemented as a physically independent device.

7 is a flowchart illustrating an example of a method for injecting a coagulant by the coagulant injection apparatus 100 according to an exemplary embodiment.

Referring to FIG. 3, in step S710, the coagulant injection device 100 may perform rapid agitation of raw water and the coagulant in the rapid stirring tank 110, and in step S720, the coagulant injection device 100 is a slow stirring tank ( 120), slow stirring may be performed on the stirring water obtained as a result of performing rapid stirring, and in step S730, the coagulant injection device 100 may determine the pH of the stirring water in which the slow stirring is performed.

In step S740, the coagulant injection device 100 may update at least one of the hourly input amount of raw water applied to the rapid stirring tank 110, the hourly injection amount of the coagulant, and the hourly input amount of the pH adjusting material according to the pH of the stirring water. In one embodiment, when the pH of the agitating water is less than or equal to the preset reference pH, the coagulant injection device 100 provides an hourly inflow of a pH adjusting material, an hourly inflow of raw water according to a higher priority in the order of a pH adjusting material, raw water, and a coagulant. and an hourly injection amount of the flocculant.

According to an embodiment of the present invention, by efficiently controlling the automatic injection of the coagulant according to the pH of the stirring water, it is possible to provide an environment in which contaminants can effectively aggregate in the raw water, thereby improving the sewage treatment performance, and a smart device. Based on this, it is possible to monitor and remote control the stirring state, thereby improving user convenience.

The present disclosure may provide a remote automatic coagulant injection device and method for smart sewage treatment, and the flocculant injection device 100 may include a remote automatic coagulant injection device for sewage treatment.

Meanwhile, the above-described method can be written as a program that can be executed on a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium. In addition, the structure of the data used in the above-described method may be recorded in a computer-readable recording medium through various means. The computer-readable recording medium includes a storage medium such as a magnetic storage medium (eg, ROM, RAM, USB, floppy disk, hard disk, etc.) and an optically readable medium (eg, CD-ROM, DVD, etc.) do.

The description of the present disclosure described above is for illustration, and those of ordinary skill in the art to which the present disclosure pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present disclosure. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present disclosure is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present disclosure.

1000: automatic coagulant injection system for sewage treatment
100: flocculant injection device 200: monitoring server
300: user terminal
110: rapid stirring tank 120: slow stirring tank
125: pH sensor 130: processor
140: raw water storage tank 150: coagulant pump
160: pH adjusting material pump 170: sedimentation tank
180: effluent reservoir 190: sludge pump
195: sludge draw

Claims (10)

In the method of injecting the coagulant,
performing rapid stirring of raw water and a coagulant in a rapid stirring tank;
performing slow stirring on the stirring water obtained as a result of performing the rapid stirring in a slow stirring tank;
determining the pH of the stirring water in which the slow stirring is performed; and
Renewing at least one of the hourly input amount of the raw water applied to the rapid agitation tank according to the pH of the stirring water, the hourly injection amount of the flocculant, and the hourly input amount of the pH adjusting material.
The method of claim 1,
The step of updating at least one of the hourly input amount of the raw water applied to the rapid stirring tank according to the pH of the stirring water, the hourly injection amount of the coagulant, and the hourly input amount of the pH adjusting material,
When the pH of the stirring water is below the preset reference pH, the hourly inflow of the pH adjusting material, the hourly inflow of the raw water and the hourly injection of the flocculant according to the highest priority in the order of the pH adjusting material, the raw water, and the flocculant How to decide.
The method of claim 1,
The step of updating at least one of the hourly input amount of the raw water applied to the rapid stirring tank according to the pH of the stirring water, the hourly injection amount of the coagulant, and the hourly input amount of the pH adjusting material,
When the pH of the stirring water is less than or equal to the first reference pH, the hourly inflow of the pH adjusting material is increased to a preset first value or more,
When the pH of the stirring water is less than or equal to the second reference pH, the hourly inflow of the raw water is increased to a predetermined second value or more,
When the pH of the stirring water is less than or equal to the third reference pH, the hourly injection amount of the coagulant is reduced to less than or equal to a third preset value,
wherein the first reference pH is greater than the second reference pH and the second reference pH is greater than the third reference pH.
4. The method of claim 3,
The hourly inflow of the increasing pH adjusting material is proportional to the difference between the pH of the stirring water and the first reference pH,
The hourly inflow of the raw water to be increased is proportional to the difference between the pH of the stirring water and the second reference pH,
The method of claim 1, wherein the hourly injection amount of the reducing coagulant is inversely proportional to the difference between the pH of the stirring water and the third reference pH.
4. The method of claim 3,
The step of updating at least one of the hourly input amount of the raw water applied to the rapid stirring tank according to the pH of the stirring water, the hourly injection amount of the coagulant, and the hourly input amount of the pH adjusting material,
When the pH of the stirring water is below the fourth reference pH, the rapid stirring speed indicating the rotation speed of the stirrer performing the rapid stirring or the slow stirring speed indicating the rotation speed of the stirrer performing the slow stirring is a preset fourth value How to increase beyond.
The method of claim 1,
providing agitation information including the pH of the stirring water, the hourly inflow of the raw water, the hourly injection amount of the flocculant, and the hourly inflow amount of the pH adjusting material to a user terminal; and
receiving a user input for at least one of an hourly inflow of the raw water, an hourly injection amount of the flocculant, and an hourly inflow amount of the pH adjusting material from the user terminal; and
Updating at least one of the hourly input amount of the raw water, the hourly injection amount of the flocculant, and the hourly input amount of the pH adjuster based on the user input; further comprising, a method.
7. The method of claim 6,
The step of providing the stirring information to the user terminal is
determining the degree of urgency based on the pH of the stirring water, the hourly input amount of the raw water, the hourly injection amount of the flocculant, and the hourly input amount of the pH adjusting material; and
When the urgency is greater than or equal to a preset value, the method further comprising the step of transmitting a warning message including the urgency to the user terminal.
In the device for injecting the coagulant,
a rapid stirring tank for performing rapid stirring of raw water and coagulant;
a slow stirring tank for performing slow stirring for the stirring water obtained as a result of performing the rapid stirring; and
Determine the pH of the stirring water in which the slow stirring is performed, and at least one of the hourly inflow of the raw water applied to the rapid stirring tank, the hourly injection of the flocculant and the hourly inflow of the pH adjusting material according to the pH of the stirring water An apparatus comprising; a processor for updating.
9. The method of claim 8,
the processor
When the pH of the stirring water is below the preset reference pH, the hourly inflow of the pH adjusting material, the hourly inflow of the raw water and the hourly injection of the flocculant according to the highest priority in the order of the pH adjusting material, the raw water, and the flocculant to determine, the device.
9. The method of claim 8,
the processor
When the pH of the stirring water is less than or equal to the first reference pH, the hourly inflow of the pH adjusting material is increased to a preset first value or more,
When the pH of the stirring water is less than or equal to the second reference pH, the hourly inflow of the raw water is increased to a predetermined second value or more,
When the pH of the stirring water is less than or equal to the third reference pH, the hourly injection amount of the coagulant is reduced to less than or equal to a third preset value,
wherein the first reference pH is greater than the second reference pH, and the second reference pH is greater than the third reference pH.

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