KR20130080564A - Phosphorus removal system and method with sbr effluent using the auto control method - Google Patents

Abstract

PURPOSE: A system for removing phosphorus from sequencing batch reactor (SBR) wastewater by using an automatic control technique and a method for removing phosphorus from SBR wastewater by using the same are provided to automatically control the amount of adequate flocculant injection, thereby stably performing phosphorus removal in a wastewater treatment process. CONSTITUTION: A measurement device (51) measures the density of phosphorus contained in SBR wastewater flowing in from an SBR reaction tub and constructs measurement data. SBR wastewater, for which phosphorus density is measured, flows into a flocculation tub (50) and a flocculant stored in a flocculant storage tub is put in through a separate line. A flocculant injection pump (41) is prepared between the flocculation tub and the flocculant storage tub. An automatic control part (60) generates a control signal to control the flocculant injection pump in a way that an adequate amount of flocculant injection for each phosphorus density can be put into the flocculation tub based on the measurement data by applying an algorithm determining the adequate amount of flocculant injection.

Description

Technical Field [0001] The present invention relates to a system for removing phosphorus from a SBR effluent using an automatic control technique, and a method for removing phosphorus from a SBR effluent using the system,

The present invention relates to a phosphorus removal system for SBR effluent using an automatic control technique and a phosphorus removal method for SBR effluent using the system. More specifically, in order to remove the phosphorus of the SBR effluent in the biological sewage treatment, phosphorus concentration in the SBR effluent is measured in real time, and the measured data is received from the automatic control unit to determine the amount of the appropriate flocculant per phosphorus concentration, A SBR effluent removal system for automatically controlling the injection amount to be injected into the flocculation tank, and a method for removing phosphorus from the SBR effluent using the system

Generally, household tap water is purified by various treatments and supplied to the home. Such a water treatment process is performed stepwise by various processes such as mixing, coagulation, sedimentation and filtration. Among these water treatment processes, the coagulation process is the most important process for determining the quality of the water in the purified water. This is because only a proper amount of coagulant is injected, which is a successive process, and it is possible to exhibit sufficient pollutant removal effect in the filter paper, and a satisfactory quality of water can be expected.

In this coagulation process, various types of coagulants are used, and the use of an appropriate coagulant is essential. When the coagulant is used in an amount less than the required amount, sufficient aggregation of the pollutant is not achieved, which causes deterioration of the water quality. In case of using a large amount of coagulant, the unreacted coagulant itself remains as a new pollutant An excessive cost is incurred. Therefore, the use of an appropriate flocculant according to each water quality is the most important factor.

In order to effectively inject the coagulant in the water treatment process, it is important to calculate an appropriate coagulant injection rate according to various water qualities and to inject a correct amount of coagulant according to the set coagulant injection rate. Generally, the water quality of the raw water flowing into the water purification plant is determined according to the water quality such as the river water as the influent source, and varies depending on the season.

Accurate water quality measurement and flocculant injection volume control are required to select and control the appropriate coagulant injection rate according to the change of raw water quality, which is greatly influenced by various factors that change depending on the season and the type of pollutant.

In addition, the coagulant injected depending on the quality of the raw water in the coagulation process depends on various complex factors such as turbidity, pH and alkalinity of the raw water. Conventionally, the j-test has been widely used to determine the loading rate of the coagulant, which is varied by such a composite factor. In the self-test, the raw water flowing into the water purification plant is manually titrated and tested until a proper amount of coagulant injection rate is determined according to each raw water source. This self test is disadvantageous because it takes about 1 ~ 2 hours to select the coagulant injection and it takes a lot of time. In addition, the self-test repeats the experiment every time depending on the quality of the raw water, which changes every moment, so that there is a problem that it can not be actively replaced depending on the water quality sensitively.

In order to inject the appropriate cation coagulant according to the change of the anion in the raw water most influencing the floc formation of the raw water, a predetermined amount of sample is sampled and the flow potential value of the sample is set to 0 mV The amount of the flocculant is calculated or measured, and then the amount of the flocculant is calculated based on the amount of the flocculant. The advantage of this is that it is possible to obtain the effect of controlling and reducing the manpower by measuring the flocculant demand in real time of raw water, but the equipment used in the method by measuring the flocculant demand is expensive equipment and has a problem of having a separate system.

In addition, although automatic flocculant injection equipment has been used in the conventional water purification facilities through the data of pH, temperature and turbidity data, it is difficult to apply such a device to the biological sewage treatment plant and it is difficult to apply it in particular to remove phosphorus from the SBR effluent Has a problem.

In addition, there is a problem that can not be achieved with existing technology in order to maintain the effluent water quality standard of 0.2 mg / L or less which is strengthened since 2012, so that the amount of the proper amount of coagulant to remove the phosphorus in the SBR effluent of the biological sewage treatment plant And a system capable of injecting an appropriate flocculant and a method of removing phosphorus.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a coagulant- SBR effluent removal system and its system using an automatic control technique that can actively and quickly cope with the phosphorus concentration of SBR effluent which can reduce the use ratio and does not require self-test experiment and change in real time. A method of removing phosphorus from the SBR effluent used is provided.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

An object of the present invention is to measure the phosphorus concentration contained in the SBR effluent introduced into the SBR effluent in the SBR effluent discharged from the SBR reactor in a system for removing the phosphorus by inputting a controlled flocculant injection amount to the SBR effluent in the biological sewage treatment plant Measuring device to form measurement data; A coagulant storage tank in which a coagulant is stored; A coagulation tank into which the SBR effluent with the phosphorus concentration measured by the measuring device is introduced, and a coagulant stored in the coagulant storage tank is introduced through a separate line; A coagulant injection pump provided between the coagulant tank and the coagulant storage tank; And an automatic controller configured to receive the measurement data and apply a proper flocculant injection amount determination algorithm to form a control signal for controlling the flocculant injection pump so that the appropriate flocculant injection amount for each phosphorus concentration is introduced into the flocculation tank based on the measured data. Can be achieved as a phosphorus removal system of SBR effluent using an automatic control technique.

The phosphorus concentration may be characterized as being a PO ₄ ^{3 −} concentration.

The appropriate flocculant injection amount determination algorithm may be characterized in that it is based on the appropriate flocculant injection amount data corresponding to various phosphorus concentrations determined through a pre-entered self-test.

The appropriate flocculant injection determination algorithm may be characterized based on Micro Visual C ⁺⁺ 6.0.

The automatic control unit receives a measurement data, a data receiving unit, an execution unit for executing an appropriate coagulant injection amount determination algorithm, a coagulant injection amount determination unit for determining the appropriate coagulant injection amount for each phosphorus concentration according to the measurement data based on the appropriate coagulant injection amount determination algorithm and a control signal It may be characterized by including a data transmission unit for transmitting the.

The automatic controller may further include a D / A converter that converts a control signal that is a digital signal into an analog control signal.

The flocculation tank may further include a flocculation wheel for controlling the flocculation agent injected into the flocculation tank and the SBR effluent and a flocculation tank wheel control unit for controlling the rotation speed of the flocculation wheel.

It may be characterized in that it is further provided between the SBR reaction tank and the coagulation tank and the effluent injection pump control unit for controlling the effluent injection pump for introducing the SBR effluent into the coagulation tank and the effluent injection pump to control the flow rate of the SBR effluent introduced into the coagulation tank. have.

It may be characterized in that it further comprises a measuring unit provided on the discharge side of the coagulation tank to measure the phosphorus concentration of the effluent discharged from the coagulation tank and transmit the measured effluent measurement data to the automatic control unit.

The flocculant may be characterized as PAC.

In another category, an object of the present invention is a method for removing phosphorus by inputting a controlled flocculant injection amount into SBR effluent in a biological sewage treatment plant, wherein the SBR effluent is measured after the wastewater introduced into the SBR reactor is completed. Into step; Measuring the phosphorus concentration of the SBR effluent in real time in a measuring apparatus to form measurement data; Receiving the measurement data by the automatic control unit; Determining an appropriate coagulant injection amount for each phosphorus concentration based on the measured data by applying an appropriate coagulant injection amount determination algorithm in an automatic control unit; Transmitting a control signal for controlling the coagulant injection pump so that the appropriate coagulant injection amount determined by the automatic control unit is injected into the coagulation tank; SBR effluent is introduced into the coagulation tank, the coagulant injection pump receives a control signal and injects the determined coagulant injection amount into the coagulation tank; Coagulation reaction occurs in the coagulation tank; And it can be achieved as a method for removing the final effluent water using an automatic control method characterized in that it comprises the step of discharging the purified water from the coagulation tank.

The phosphorus concentration may be characterized as being a PO ₄ ^{3 −} concentration.

The appropriate flocculant injection amount determination algorithm may be characterized based on the appropriate flocculant injection data corresponding to various phosphorus concentrations determined through pre-collected self-test.

In the step of receiving by the automatic control unit, the data receiving unit provided in the automatic control unit receives the measurement data, and determining the appropriate coagulant injection amount, the execution unit provided in the automatic control unit executing the appropriate coagulant injection amount determination algorithm and the automatic control unit The coagulant injection amount determination unit provided in the determining the appropriate coagulant injection amount according to the measurement data based on the appropriate coagulant injection amount determination algorithm, and in the step of transmitting the control signal, the appropriate coagulant injection amount determined by the data transmission unit provided in the automatic control unit And transmitting a control signal for controlling the flocculant injection pump to be introduced into the flocculation tank to the flocculant injection pump.

The D / A converter included in the automatic control unit may further include converting a control signal that is a digital signal into an analog control signal.

The coagulation tank wheel control unit may further include controlling the rotation speed of the coagulation wheel for stirring the coagulant and the SBR effluent injected into the coagulation tank.

The effluent injection pump control unit may be further provided between the SBR reaction tank and the coagulation tank to control the effluent injection pump for introducing the SBR effluent into the coagulation tank to adjust the flow rate of the SBR effluent introduced into the coagulation tank.

The measuring unit provided on the discharge side of the coagulation tank may further comprise the step of measuring the phosphorus concentration of the effluent discharged from the coagulation tank and transmitting the measured effluent measurement data to the automatic control unit.

As described above, according to the embodiment of the present invention, the existing small-scale sewage treatment facility is mainly composed of the SBR process capable of flexibly coping with the fluctuation of the flow rate, It is possible to perform stable processing.

In addition, according to the embodiment of the present invention, there is an advantage that economical operation efficiency can be expected because of a lack of management personnel of the treatment plant and a long time due to the self-test. In addition, It can be utilized as a means and has a very high utility.

In addition, it is easy to apply chemical treatment to livestock wastewater and wastewater with high chemical consumption in order to meet the phosphorus treatment standard strengthened from 2012, and the removal efficiency after coagulant injection is more than 95% It is possible to remove phosphorus so as to conform to the present invention.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a block diagram of a system for removing SBR effluent using an automatic control technique according to an embodiment of the present invention.
FIG. 2 is a flowchart of a method for removing phosphorus in SBR effluent using an automatic control technique according to an embodiment of the present invention.
3 is a block diagram illustrating a signal flow between an automatic control unit, a coagulant injection pump, and a measurement apparatus according to an embodiment of the present invention.
4 is a block diagram illustrating a control flow of the SBR effluent removal system using an automatic control technique according to an embodiment of the present invention.
FIG. 5 is a graph showing measured data results in time in a data receiving unit according to an embodiment of the present invention,
FIG. 6 is a block diagram illustrating an exemplary embodiment of an automatic control unit according to the present invention,
FIG. 7 is a view showing an example of a coagulant injection amount determination unit displayed on the display unit of the automatic control unit according to the embodiment of the present invention,
8 is a plan view of a conversion unit included in the automatic control unit according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Hereinafter, the configuration and operation of the SBR effluent removal system 100 using the automatic control technique according to the embodiment of the present invention will be described. The phosphorus removal method using the SBR effluent phosphorus removal system 100 using the automatic control technique will also be described.

1 is a block diagram of a system 100 for removing SBR effluent using an automatic control technique according to an embodiment of the present invention. 2 is a flowchart illustrating a method for removing phosphorus in SBR effluent using an automatic control technique according to an embodiment of the present invention.

1, an SBR effluent removal system 100 using an automatic control technique according to an embodiment of the present invention removes phosphorus from the effluent discharged from the SBR reaction vessel 20 after the biological wastewater treatment reaction is completed. The system 100 can automatically inject an appropriate amount of the flocculant into the effluent according to the phosphorous concentration of the effluent.

1, an SBR effluent removal system 100 using an automatic control technique according to an embodiment of the present invention includes a wastewater storage tank 10 and a SBR (biological waste water treatment system) Based on the phosphorus concentration measurement data of the flocculation tank (50) and the SBR effluent, in which the effluent from the SBR reaction tank (20) and the flocculant introduced from the flocculant reservoir (40) And an automatic control unit 60 for determining a proper amount of the coagulant to be injected and sending out a control signal for controlling the coagulant injection pump 41 so as to inject the appropriate amount of coagulant into the coagulation bath 50.

Wastewater to be subjected to sewage treatment is stored in the waste water storage tank 10 and waste water stored in the waste water storage tank 10 is introduced into the SBR reaction tank 20 by the waste water injection pump 11. The wastewater injection pump 11 is connected to a wastewater injection pump control unit 12 to control the flow rate of the wastewater flowing into the SBR reaction tank 20.

1, the SBR reaction tank 20 includes an air injection unit 24 for injecting air into the SBR reaction tank 20 to generate a biological wastewater treatment reaction, as in a normal SBR reaction tank 20, And an air injection unit control unit 25 for controlling the air injection unit 24. In order to increase the reaction efficiency in the SBR reaction vessel 20, a reaction vessel wheel 21 may be provided in the SBR reaction vessel 20. A reaction vessel wheel control unit 22 is connected to the reaction vessel wheel 21, 21 can be controlled.

The measurement sensor 23 is provided in the SBR reaction tank 20 to measure the dissolved oxygen amount (DO), pH, oxidation-reduction potential (ORP) and the like of the wastewater in the SBR reaction tank 20 in real time The automatic control unit 60 receives the measurement data of the wastewater reacted in the SBR reaction tank 20 and stores the measurement data.

The flocculating tank 50 is for removing the SBR effluent from which the SBR reaction has been completed in the SBR reaction tank 20 and the flocculant stored in the flocculant storage tank 40 to remove the phosphorus by the flocculation reaction. An effluent injection pump 30 is provided between the flocculation tank 50 and the SBR reaction tank 20 and an effluent injection pump control unit 31 is connected to the effluent injection pump 30. The effluent injection pump control unit 31 is connected to the SBR reaction tank 20 The flow rate of the SBR effluent flowing into the flocculation tank 50 can be controlled.

The coagulation bath wheel 52 may be provided inside the coagulation bath 50 in order to smooth the coagulation and precipitation reaction in the coagulation bath 50. The coagulation bath wheel 52 may be provided in the coagulation bath wheel controller 53, And the control unit 53 controls the rotation speed of the wheel 52 to control the coagulation reaction.

Hereinafter, the signal flow of the automatic control unit 60, the coagulant injection pump 41, and the measuring device 51 corresponding to the technical features of the phosphorus removal system 100 of the present invention will be described. 3 is a block diagram illustrating a signal flow between the automatic control unit 60, the coagulant injection pump 41, and the measurement apparatus 51 according to the embodiment of the present invention. 4 is a block diagram illustrating a control flow of the SBR effluent removal system 100 using an automatic control technique according to an embodiment of the present invention.

3 and 4, the SBR effluent is introduced into the measuring device 51 provided in the flocculation tank 50 and the measuring device 51 is connected to the SBR The phosphorus concentration of the effluent is measured in real time (S20). More specifically, the measuring device 51 in the embodiment measures the PO ₄ ^{3 -} concentration of the SBR effluent to form measurement data. Then, the measuring device 51 forming the measurement data transmits the measurement data to the automatic control unit 60 in real time (S30).

In addition, the automatic control unit 60 determines an appropriate coagulant injection amount for each concentration of phosphorus by applying a predetermined coagulant injection amount determination algorithm, and transmits a control signal to the coagulant injection pump 41 to transmit the coagulant injection pump 41. The coagulant injection pump 41 is controlled such that the coagulant is injected into the coagulation tank 50 at an appropriate coagulant injection amount determined by the co-treatment.

4, the automatic control unit 60 includes a data receiving unit 61, an execution unit 62, a coagulant injection amount determination unit 63, a conversion unit 64, and a data transmission unit 65 . The concentration of the data receiving section 61 receives the measurement data measured by the measuring device 51 is provided in the flocculation tank (50) in real time, receiving (S40) provided in the automatic control unit 60 (in the specific embodiment PO ₄ ^{3 -} concentration or total phosphorus concentration (TP concentration)) on the display unit of the automatic control unit 60.

FIG. 5 is a graph showing measurement data results in time in the data receiving unit 61 according to the embodiment of the present invention. As shown in FIG. 5, the data receiving unit 61 according to the embodiment of the present invention receives data using the Hach Link 2000 program, displays the measured data in real time, and displays the data. 5, in the specific embodiment, the initial phosphorus concentration of the SBR effluent is about 2.75 mg / L, and the amount of coagulant injected by the coagulant injection amount determination unit 63, as described later, 41, and the concentration of phosphorus was about 0.05 mg / L after the coagulation reaction was completed.

Then, the execution unit 62 provided in the automatic control unit 60 executes the appropriate coagulant injection amount determination unit 63 for determining the appropriate amount of coagulant injection (S50). 6 shows an execution unit 62 displayed on the display unit of the automatic control unit 60 according to the embodiment of the present invention. In the specific embodiment, as shown in FIG. 6, an execution program was created using G macro second Edition 2.0.

When the appropriate coagulant injection amount determination unit 63 is executed by the execution unit 62, the appropriate coagulant injection amount determination unit 63 provided in the automatic control unit 60 receives measurement data from the data reception unit 61, The amount of the appropriate amount of cohesive agent per phosphorus concentration is determined (S60).

Determination of the appropriate coagulant injection amount for each phosphorus concentration by the appropriate coagulant injection amount determination unit 63 uses a suitable coagulant injection amount determination algorithm, and the variable amount of coagulant injection amount at various phosphorus concentrations determined through a Jar-Test in advance. The optimal coagulant injection amount determination program written using Microsoft Visual C ++ 6.0 is used to determine the appropriate coagulant injection amount for each phosphorus concentration. 7 shows the coagulant injection amount determination unit 63 displayed on the display unit of the automatic control unit 60 according to the embodiment of the present invention.

In order to convert a control signal for controlling the coagulant infusion pump 41 into an analog system so that the amount of the appropriate amount of coagulant per phosphorus concentration determined by the coagulant injection amount determination unit 63 is input to the coagulation bath 50, Includes a conversion unit 64. The conversion unit 64 includes a conversion unit 64, The D / A converter 64 receives the digital control signal and converts it into an analog control signal (S70). FIG. 8 is a plan view of the conversion unit 64 provided in the embodiment of the present invention. As shown in FIG. 8, it can be seen that the conversion unit 64 according to the specific embodiment is manufactured using the CP302 board.

Finally, the data transmission unit 65 provided in the automatic control unit 60 transfers the analog control signal converted by the conversion unit 64 to the coagulant injection pump 41, and the coagulant injection pump 41 performs the control (S80), and the appropriate amount of coagulant is injected into the flocculation tank 50 (S90). The coagulant introduced into the flocculation tank (50) is a polyaluminum chloride (PAC) in a concrete example.

Therefore, the SBR effluent flowing into the flocculation tank 50 reacts with the flocculant injected by the flocculant infusion pump 41 operated according to the control signal, thereby causing coagulation and sedimentation reaction to remove the phosphorus of the SBR effluent (S100) . After the flocculation reaction, the final effluent separated through filtration is discharged through the discharge pipe 54 of the flocculation tank 50 (S110).

The concentration of phosphorus contained in the final effluent water is further checked once again at one side of the discharge pipe 54 of the coagulation tank 50 to transfer phosphorus concentration measurement data to the automatic control unit 60 to inject the appropriate amount of coagulant It can be configured to determine how much phosphorus has been removed.

10: waste water storage tank
11: Waste Water Injection Pump
12: waste water injection pump control unit
20: SBR reaction tank
21: Reactor wheel
22: reactor wheel control unit
23: Measuring sensor
24:
25: air injection unit control unit
30: Effluent pump
31: Effluent pump control unit
40: coagulant storage tank
41: coagulant injection pump
50: Coagulation tank
51: Measuring device
52: Coagulation wheel
53: Cohesion wheel control unit
54: discharge pipe
60: Automatic control unit
61: Data receiving section
62: Execution unit
63: coagulant injection amount determining unit
64:
65: Data transmission section
100: SBR effluent removal system using automatic control technique

Claims (17)

A system for removing phosphorus by injecting a controlled amount of coagulant into a SBR effluent of a biological sewage treatment plant,
A measuring device for measuring the concentration of phosphorus contained in the SBR effluent from the SBR effluent and forming the measurement data;
A coagulant storage tank in which a coagulant is stored;
A flocculating tank into which the SBR effluent whose phosphorus concentration is measured by the measuring device is introduced and coagulant stored in the flocculant storage tank is introduced through a separate line;
A flocculant injection pump provided between the flocculation tank and the flocculant reservoir; And
Receiving the measurement data by applying a suitable flocculant injection amount determination algorithm comprises an automatic control unit for forming a control signal for controlling the flocculant injection pump so that the appropriate coagulant injection amount for each phosphorus concentration is added to the coagulation tank based on the measurement data Phosphorus removal system of SBR effluent using an automatic control method characterized in that.
The method of claim 1,
Wherein the phosphorus concentration is a PO ₄ ^{3 -} concentration.
The method of claim 1,
The appropriate coagulant injection amount determination algorithm is based on the appropriate coagulant injection data corresponding to various phosphorus concentrations determined through a pre-injected self-test phosphorus removal system using the automatic control technique.
The method of claim 3, wherein
The appropriate flocculant injection amount determination algorithm is based on Micro Visual C ⁺⁺ 6.0 Phosphorous removal system of SBR effluent using an automatic control method.
5. The method of claim 4,
The automatic control unit
A data receiving unit for receiving the measurement data, an execution unit for executing the appropriate flocculant injection amount determination algorithm, a flocculant injection amount determination unit for determining the appropriate coagulant injection amount for each phosphorus concentration based on the measured flocculant injection amount determination algorithm, and the Phosphorous removal system for SBR effluent using an automatic control method characterized in that it comprises a data transmission unit for transmitting a control signal.
6. The method of claim 5,
The automatic control unit
And a D / A converter for converting the control signal as a digital signal into an analog control signal.
The method of claim 1,
The flocculation tank further includes a flocculation wheel for agitating the flocculant and the SBR outflow water injected into the flocculation tank, and a flocculation tank wheel control unit for controlling the rotation speed of the flocculation wheel. Phosphorus removal system.
The method of claim 1,
SBR effluent using an automatic control method is provided on the discharge side of the coagulation tank further comprises a measuring unit for measuring the phosphorus concentration of the effluent discharged from the coagulation tank and transmitting the measured effluent measurement data to the automatic control unit. Phosphorus removal system.
The method of claim 1,
Wherein the coagulant is a PAC. A system for removing phosphorus in a SBR effluent using an automatic control technique.
A method for removing phosphorus by injecting a controlled amount of flocculant into a SBR effluent of a biological sewage treatment plant,
A step of injecting SBR effluent into the measuring device after the biological reaction is completed in the wastewater flowing into the SBR reaction tank;
Measuring the phosphorus concentration of the SBR effluent in real time in the measuring device to form measurement data;
The measurement data being received by an automatic control unit;
Determining an appropriate coagulant injection amount for each phosphorus concentration based on the measured data by applying an appropriate coagulant injection amount determination algorithm in the automatic control unit;
Transmitting a control signal for controlling the flocculant injection pump such that the appropriate flocculant injection amount determined by the automatic controller is injected into a flocculation tank;
Injecting the SBR effluent into the flocculation tank, receiving the control signal and injecting the determined amount of the coagulant into the flocculation tank;
Generating an aggregation reaction in the flocculation tank; And
Phosphorus removal method of the SBR effluent using an automatic control method characterized in that it comprises the step of discharging the effluent from the coagulation tank.
The method of claim 10,
Wherein the phosphorus concentration is a PO ₄ ^{3 -} concentration.
The method of claim 10,
The method of determining the appropriate flocculant injection amount is based on the appropriate flocculant injection data corresponding to various phosphorus concentrations determined through pre-collected self-test.
13. The method of claim 12,
In the step of receiving by the automatic control unit, the data receiving unit provided in the automatic control unit receives the measurement data,
The step of determining the appropriate amount of coagulant may include:
An execution unit provided in the automatic control unit executing the proper coagulant injection amount determination algorithm and a coagulant injection amount determination unit provided in the automatic control unit determining an appropriate coagulant injection amount according to the measurement data based on the appropriate coagulant injection amount determination algorithm. Including,
And transmitting a control signal for controlling the coagulant injecting pump to the coagulant injecting pump so that the appropriate coagulant injecting amount determined by the data transmitter included in the automatic control unit is input to the coagulation tank in the step of transmitting the control signal. Phosphorus removal method of SBR effluent using the automatic control method.
The method of claim 13,
And a step of converting the control signal, which is a digital signal, into the analog control signal by the D / A converter provided in the automatic control unit.
The method of claim 10,
And a coagulation tank wheel control unit controlling the rotation speed of the coagulation wheel for agitating the coagulant and the SBR effluent injected into the coagulation tank.
The method of claim 10,
The effluent injection pump control unit is provided between the SBR reaction tank and the coagulation tank further comprising the step of controlling the effluent injection pump for introducing the SBR effluent into the coagulation tank to adjust the flow rate of the SBR effluent water introduced into the coagulation tank Phosphorus removal method of SBR effluent using the automatic control method.
The method of claim 10,
The measuring unit provided on the discharge side of the coagulation tank measures the phosphorus concentration of the effluent discharged from the coagulation tank and transmits the measured effluent measurement data to the automatic control unit using an automatic control method, characterized in that How to remove phosphorus from SBR effluent.

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