KR102029976B1 - Power saving and peak reduction Power saving and peak reduction of wastewater treatment facility using automatic operation system responding to demand response Automated operation control method for demand response - Google Patents

Abstract

Disclosed is an automated operation control system responding to demands of power saving and peak reduction in a wastewater treatment facility, and a method thereof. The automated operation control system responding to demands of power saving and peak reduction comprises: a power saving control unit having a first control unit; a peak reduction demand response control unit having a second control unit; a loss restoration control unit having a third control unit; and a loss sensor sensing the loss during the peak reduction demand response issue period, and transmitting the same to the third control unit.

Description

Power saving and peak reduction Power saving and peak reduction Power saving and peak reduction of wastewater treatment facility using automatic operation system responding to demand response Automated operation control method for demand response}

The present invention relates to a power saving and peak reduction demand response type automatic operation control method of a wastewater treatment facility using a power saving and peak reduction demand response type automatic operation system.

More specifically, the sewage treatment plant can be operated variably according to the deviation of each measured value and each set value for COD _cr , TN, NO ₃ ^-- N, NH ₄ ⁺ -N of influent, anaerobic tank, aerobic tank and treated water. By having an automatic power saving operation mode that can efficiently manage the driving power; Having an automatic response mode corresponding to the peak reduction demand response by variably controlling the inflow pump, the anaerobic agitator, the anoxic tank agitator, the internal conveying pump, and the blower according to the issuance and release of the peak reduction demand response; Peak reduction demand response Power saving and peak reduction demand response characterized in that it has an automatic recovery operation mode that can recover the throughput reduction during the issuance time; power saving and peak reduction demand response of sewage treatment facilities using automatic operation system The present invention relates to a corresponding automatic operation control method.

The grid is designed to operate in line with the supply and demand of electricity. The index indicating this balance is frequency, and the stability of this frequency is directly related to the quality of electricity. At present, the demand for electric power in the operation of the electric grid is very difficult to adjust because it depends on the individual electricity use. Therefore, the power supply always follows the power demand in real time.

However, since power demand fluctuates over time, the amount of power supplied always meets maximum demand. Up to 10% demand is virtually three out of 365 days a year, so many generators are waiting for the three days. This is uneconomical and inefficient, just as it maintains several separate highway facilities that are not used for one year for the third day of the Chuseok holiday.

If the demand can be reduced by 10% for only three days when the maximum demand occurs during the year, the grid operation is very stable, and in Korea, there is no need to construct five or six large nuclear power plants, and the economic benefit is very large.

In this regard, demand management techniques related to providing incentives by demand energy voluntary energy saving by demand response (DR) have emerged. In particular, demand response has become more necessary due to the increase in renewable energy sources, which have weaknesses in the timely supply and demand of electricity supply and demand, and if the smart grid, an ongoing global power grid, is established, demand response is a core service. Do.

More specifically, the demand response is a demand response that responds to the increase in the demand of electricity, thereby reducing the use of electricity. Therefore, it is very difficult to adjust the demand manually. There is no power outage.

In particular, since a simple electricity rate system does not motivate consumers to respond voluntarily, in the US and Europe, grid operators generate strong demand incentives for demand response. More active demand response services are being applied by way of granting and by selling in the market.

Here, it is a system that can secure the optimal DR resource through the combination of various cases and facilities in the wastewater treatment plant, which has high energy consumption and its operation characteristics are different from those of general factories or buildings.

In Korea, power consumption is rapidly increasing in the summer and winter, changing the record every year. As the power reserve rate is less than 5%, power shortages, power transmission and distribution systems, and important facilities are likely to be victims of direct power accidents.

In order to prevent accidents caused by power shortages and to reduce the cost of building additional power plants, KEPCO and the Korea Exchange are pushing for the commercialization of real-time demand response (DR).

Real-time DR is a two-axis technology of the Smart Grid, along with a power trading system that sells electricity generated by renewable energy. It introduces the demand / supply concept for power generation and power use, and sends power consumption reduction signals in real time. If the power is reduced manually or automatically, it is a system that compensates for it.

Sewage water facilities are also adding various power generation facilities such as biogas power generation (fuel cell, turbine power generation) and photovoltaic power generation for energy independence. Reduction of use is possible.

In addition, real-time DR is in the pilot stage in the US, which is an advanced country of Smart Grid, so the efficient management of water and energy applied to it is expected to be a great advantage in entering the overseas water treatment market.

Prior Document 1: Korean Patent Publication No. 10-2016-0116068 Prior Document 2: Korean Patent Publication No. 10-2012-0114435

An object of the present invention is to control the operation speed according to the water treatment status of each part of the sewage water treatment facility by using the automatic operation system for power-saving and peak reduction demand response response that can efficiently manage the power required The present invention provides an automatic operation control method that responds to demand reduction and peak reduction.

Another object of the present invention is the power saving and peak reduction demand response of the wastewater treatment facility using the automatic operation system for power saving and peak reduction demand response that can automatically control the operation of the wastewater treatment facility in conjunction with the issuance and release of peak reduction demand response It is to provide a corresponding automatic operation control method.

Another object of the present invention is to recover the processing loss amount by accelerating the processing loss amount that can be generated within the peak reduction demand response time before the peak reduction demand response 1 hour or after the peak reduction demand response is released. The present invention provides an automatic operation control method for power saving and peak reduction demand response response of a wastewater treatment plant using an automatic operation system for power saving and peak reduction demand response.

The technical problem to be achieved in the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The present invention for achieving the above technical problem, a power saving control unit including a first control unit, a peak reduction demand response control unit including a second control unit, a loss amount recovery control unit including a third control unit and peak reduction demand Power saving and peak reduction demand response response automatic operation control method of a wastewater treatment facility using a power saving and peak reduction demand response automatic operation system having a loss amount sensor for sensing a loss amount during a reaction issue time and transmitting it to the third controller to,
According to the deviation of the measured value and the set value for the inflow water, anoxic tank, aerobic tank, treated water COD _Cr , TN (total amount of nitrogen present in the treated water), NO ₃ ^-- N, NH ₄ ⁺ -N The controller controls the amount of conveyance of the internal conveying pump and the amount of blower of the blower to be variable,
Is -N measure NO ₃ ^{- -} The TN measure of the number of NO ₃ treatment of small, anoxic than TN set value smaller than the set value -N, the first control is to decrease the internal volume internal recycle compared to the present state Controlling the conveying pump; The TN measure of the number of processing is smaller than set value TN, NO ₃ in the anoxic tank ^- is -N measure NO ₃ ^- -N if greater than or equal to the set value, the first control is to maintain the present state quantity internal recycle Control an internal conveying pump; When the first control unit reduces the internal conveying amount, the first control unit controls the internal conveying pump so that the internal conveying flow rate does not become less than 50% of the influent flow rate flowing into the anaerobic tank;
When the TN measurement value of the treated water is larger than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank is larger than the NH ₄ ⁺ -N setting value, the first control unit increases the blowing amount to the exhalation tank than the present time. Control the blower as much as possible; If the measured TN value of the treated water is larger than the TN set value, and the NH ₄ ⁺ -N measured value of the exhalation tank is less than or equal to the NH ₄ ⁺ -N set value, the first controller determines that the amount of blown air to the exhaled tank is present. Control the blower to maintain a state; When the first control unit controls the blowing amount to the exhalation tank, the first control unit controls the dissolved oxygen in the aerobic tank by 40 to 60% of the difference between the NH ₄ ⁺ -N measurement value and the NH ₄ ⁺ -N setting value in the exhalation tank. Controlling the blower to increase the concentration;
When the TN measurement value of the treated water is smaller than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank is smaller than the NH ₄ ⁺ -N setting value, the first control unit reduces the blowing amount to the exhalation tank than the present time. Control the blower as much as possible; When the TN measurement value of the treated water is smaller than the TN setting value and the NH ₄ ⁺ -N measurement value of the exhalation tank is greater than or equal to the NH ₄ ⁺ -N setting value, the first control unit determines that the amount of blown air to the exhalation tank is present. Control the blower to maintain a state;
When the peak reduction demand response is issued, the second control unit controls the stirring speed of the anaerobic tank and the anoxic tank stirrer to be 20 to 60% of the speed before the peak reduction demand reaction is issued, and the dissolved oxygen concentration of the aerobic tank is before the peak reduction demand response is issued. And controlling to be 30 to 70% of the dissolved oxygen concentration, and controlling to return to a state before the peak reduction demand response is issued when the peak reduction demand response is released;
A timer detects that the peak reduction demand response is one hour before it is issued, and detects whether there is a buffer space in the flow adjustment tank by a buffer space detection unit, and if there is a buffer space in the flow adjustment tank, the peak reduction demand The rapid acceleration time is set until immediately before the reaction is issued, and the inflow flow rate of the inflow water, the stirrer operation speed of the anaerobic tank, the internal conveyance amount by the internal conveying pump, and the operation of the blower during the rapid acceleration time by the third controller. Further accelerating the speed, thereby recovering the treatment loss of the influent during peak reduction demand response time,
When the loss amount during the peak reduction demand response issuance time sensed by the loss amount detection sensor is smaller than the set recovery amount previously stored in the third control unit, the set recovery amount after the peak reduction demand response is released by the third control unit. Power saving and peak reduction of wastewater treatment facilities using automatic response system for energy-saving and peak reduction, which further includes re-acceleration of the inflow of influent, anaerobic agitator, anoxic tank agitator, internal conveying pump, and blower An automatic response control method for demand response is provided.

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Preferably, when the second control unit receives a peak reduction demand response command signal from the transmission and reception unit, the inflow pump is stopped, the stirrer of the anaerobic tank is decelerated, and the internal conveying pump is stopped. The blowers may be controlled to decelerate operation.

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The present invention can efficiently manage the power required by varying the operating speed according to the water treatment state of each part of the sewage treatment plant can reduce the power consumption compared to the existing.

In addition, the present invention is capable of unmanned automatic operation of the wastewater treatment facility in response to the peak reduction demand response issuance and release signal.

In addition, the present invention can recover the amount of treatment loss by accelerating the amount of treatment loss that can occur within the peak reduction demand response time compared to the normal speed operation 1 hour before the peak reduction demand response or after the peak reduction demand response is released. However, despite the peak reduction demand response, the total amount of treated water can be prevented.

The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is an overall configuration diagram of the wastewater treatment plant and its operation control system according to the present invention
2 is a detailed configuration diagram of an operation control system according to the present invention
3 is a control flowchart of a power saving control unit according to the present invention;
Figure 4 is a control flow diagram of the control unit for peak reduction demand response according to the present invention
5 is a control flowchart of a loss recovery control unit according to the present invention;

As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, coupled)" with another part, it is not only "directly connected" but also "indirectly connected" with another member in between. Includes the case where In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

1 is an overall configuration diagram of a wastewater treatment facility and an operation control system thereof according to the present invention.

According to Figure 1, the wastewater treatment plant 10 to which the control system of the present invention is applied is maintained in the anaerobic state by stirring the inflow water introduced by the inflow pump 11 by the stirrer 21, by the phosphorus removal microorganism An anaerobic tank 20 which releases phosphorus (Phosphorus); An oxygen-free tank 30 for stirring the inflow water treated in the anaerobic tank with a stirrer 31 and denitrifying in an anoxic state; An aeration tank 40 for supplying air to the influent treated in the anaerobic tank through the aeration device 12 to remove organic substances while maintaining an aerobic state, and to cause nitrification to absorb the phosphorus-removing microorganisms in excess; The treated water which has filtered the aerobic sludge from the influent introduced from the aerobic tank is discharged and the settling sludge is provided with a settling tank 50 which is returned to the anaerobic tank 20 through the sludge conveying line 13 for reprocessing. Reference numeral 60 is a flow control tank.

Here, the aeration device 12 may be composed of an aeration pipe 12a installed in the aeration tank 40, and a blower 12b for blowing air into the aeration pipe.

In addition, the wastewater treatment facility 10 may further include an internal conveying line 14a and an internal conveying pump 14b for conveying nitrogen oxide formed in the aerobic tank 40 into the oxygen-free tank 30.

In addition, the wastewater treatment facility 10 may further include a water quality measuring instrument 15 for measuring the water quality of the influent, the anaerobic tank 30, the aerobic tank 40, the treated water.

The present invention provides a control system 100 for automatically operating the wastewater treatment facility 10 in response to power saving and peak reduction demand response.

The control system 100, as shown in Figure 2, the power saving control unit 200 for controlling the wastewater treatment facility 10 to operate efficiently without unnecessary power waste; A peak reduction demand response control unit 300 for controlling the wastewater treatment facility 10 to automatically operate in response to the peak reduction demand response; The wastewater treatment facility 10 may be configured as a loss recovery control unit 400 that controls the operation to automatically operate to recover the throughput reduced during the peak reduction acceptance reaction time.

The section dedicated control unit 200 is the influent, the anoxic tank 30, the aerobic tank 40, the treated water of COD _cr (potassium dichromate), TN (total amount of nitrogen present in the Total Nitrogen, water treatment), NO ₃ ^{- -} The purpose is to efficiently manage the operation power by allowing the wastewater treatment plant 10 to be operated variably according to the deviation between the measured values and the set values for N (nitrate nitrogen) and NH ₄ ⁺ -N (ammonia nitrogen). .

The power saving control unit 200 is the water quality data measured from the water quality measuring instrument 15, that is, influent, anoxic tank 30, aerobic tank 40, COD _Cr of the treated water, TN, NO ₃ ^-- N, NH ₄ It may include a storage unit 210 for receiving, storing and updating each measurement value for ⁺ -N in real time.

The power saving control unit 200 according to each measured value stored in the storage unit 210, NO ₃ ^-- N of the anaerobic tank 30, NH ₄ ⁺ -N of the aerobic tank 40, TN set value of the treated water It may further include a setting unit 220 for setting each.

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The power saving control unit 200 may further include a deviation calculator 230 for calculating a deviation value of each measured value and each set value.

The power saving control unit 200 controls the internal conveying pump 14b for conveying the aerobic tank 30 from the aerobic tank 30 and the blower 12b for supplying air to the aerobic tank 40 according to the deviation value. The apparatus may further include a first control unit 240.

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Wherein a section dedicated control unit 200, as shown in Figure 3, the TN measure of treatment larger than the set value TN, the anoxic tank ₃ NO ^- is -N measure NO ₃ ^- -N less than or equal to the set value In this case, the internal conveying pump 14b may be controlled by the first control unit 240 to maintain the internal conveying amount. The TN measured value of the treated water is larger than the TN set value, the total amount of nitrogen is higher than the normal value, and the NO ₃ ^-- N measured value in the anoxic tank 30 is less than or equal to the set value, since denitrification is normally performed. It is preferable to control so that internal conveyance amount can maintain a present state.

In the power saving control unit 200 as shown in FIG. 3, when the TN measurement value of the treated water is smaller than the TN setting value, and the NO ₃ ^-- N measurement value of the anaerobic tank is smaller than the NO ₃ ^-- N setting value, The first control unit 240 may control the internal conveying pump 14b to reduce the internal conveying amount compared to the current state.

Here, when the TN measurement value is smaller than the TN setting value means that the total amount of nitrogen is smaller than the normal value, and that the NO ₃ ^-- N measurement value of the oxygen-free tank 30 is smaller than the NO ₃ ^-- N setting value is denitrification. In this case, it is preferable that the first control unit 240 suppresses the denitrification rate by reducing the amount of internal conveyance to the oxygen-free tank 30 in this case.

In the case where the first control unit 240 reduces the internal conveying amount, the first control unit 240 has an internal conveying pump so that the internal conveying flow rate is not less than 50% of the influent flow rate flowing into the anaerobic tank 20. It is more preferable to control 14b.

The reason is that when the inflow rate of the inflow water flowing into the anaerobic tank 20 is less than 50%, the total amount of NO ₃ ^-- N flowing into the anaerobic tank 30 decreases and the total amount of NO ₃ ^-- N denitrating also decreases. This is because the TN of the treated water may increase.

On the other hand, the TN measured value of the treated water is less than set value TN, NO ₃ in the anoxic tank ^- is -N measure NO ₃ ^- in the case greater than or equal to the set value -N, the first control unit 240 inside the transport It is preferable to control the internal conveying pump 14b so that the quantity maintains the present state.

In the power saving control unit 200, as shown in FIG. 3, the TN measurement value of the treated water is larger than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank 40 is NH ₄ ⁺ -N setting. When the value is larger than the value, the first controller 240 may control the blower 12b to increase the blowing amount of the exhalation tank than the present time. In this case, the large NH ₄ ⁺ -N measurement value in the exhalation tank 40 means that the exhalation is not normal. Therefore, it is preferable to increase the air blowing amount in order to normalize the exhalation state.

Here, when the first control unit 240 controls to increase the amount of air flow to the exhalation tank 40, the first control unit 240 is the NH ₄ ⁺ -N measurement value and NH ₄ ⁺ -N in the exhalation tank (40) It is more preferable to control the blower 12b so that the dissolved oxygen concentration of the aerobic tank increases by 40 to 60% of the set value difference.

The dissolved oxygen concentration increased NH ₄ ⁺ -N and NH ₄ ⁺ -N measurement set value is less than 40% of the supply of air required for the aerobic tank nitrification insufficient and NH ₄ ⁺ -N measure of the difference between the aerobic tank 40 is This is because it is difficult to be smaller than the NH ₄ ⁺ -N setting value, and if it is 60% or more, the NH ₄ ⁺ -N measurement value is much smaller than the NH ₄ ⁺ -N setting value, which lowers the power usage efficiency.

In the power saving control unit 200 as shown in FIG. 3, when the TN measurement value of the treated water is larger than the TN setting value, and the NH ₄ ⁺ -N measurement value of the aerobic tank 40 is smaller than or equal to the setting value. The first control unit 240 may control the blower 12b to maintain the current amount of the air flow to the exhalation tank. In this case, since the NH ₄ ⁺ -N measurement value in the exhalation tank 40 is less than or equal to the set value means that the exhalation state is normal, it is preferable to keep the blowing amount in the present state.

The power saving control unit 200, as shown in Figure 3, when the measured TN value of the treated water is smaller than the TN set value, and the NH ₄ ⁺ -N measured value of the exhalation tank 40 is smaller than the set value, The first control unit 240 may control the blower 12b to reduce the amount of air blown into the exhalation tank 40 from the present. In this case, since the NH ₄ ⁺ -N measurement value in the exhalation tank 40 is smaller than the set value, it is preferable to reduce the amount of blown air so as to attenuate the amount of supply oxygen.

In the power saving control unit 200, as shown in FIG. 3, the TN measurement value of the treated water is smaller than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank 40 is greater than or equal to the setting value. In this case, the first control unit 240 may control the blower 12b to maintain the airflow amount to the exhalation tank 40. If the NH ₄ ⁺ -N measurement value of the aerobic tank 40 is large, the air flow amount should be increased. However, if the TN measurement value of the treated water is smaller than the set value, the overall air condition is good, and thus the air flow amount may be maintained.

The power saving control unit 200 having such a configuration and control logic is characterized in that each measured value and each set value for COD _cr , TN, NO ₃ ^-- N, NH ₄ ⁺ -N of influent, anaerobic tank, aerobic tank, and treated water. By operating the sewage and wastewater treatment facility 10 in accordance with the deviation, it is possible to efficiently manage the driving power.

The peak reduction demand response control unit 300 may include a transceiver 310 for receiving and transmitting a peak reduction demand response command or release signal as shown in FIG. 2.

The peak reduction demand response control unit 300, as shown in Figure 2, in response to the peak reduction demand issued or released signal transmitted from the transceiver 310, the stirrer 21 of the anaerobic tank 20 ), A second control unit 320 for variably controlling the agitator 31, the internal conveying pump 14b, and the blower 12b of the oxygen-free tank 30.

Here, the demand response (DR) refers to the end consumer using power outside the usual consumption pattern in response to price, financial compensation, or the electric company's instructions. In general, utilities offer financial rewards to end-users to reduce power consumption in response to high wholesale market prices or system reliability threats. The demand response system allows the end consumers to voluntarily be driven by the economic incentives to save on electricity rates by allowing them to pay high rates when electricity demand reaches peak and when electricity consumption needs to be reduced. There is a time-differentiated rate plan that encourages you to reduce your electricity consumption. In other words, in the present invention, the issuance of the peak reduction demand response means that the operation of the wastewater treatment facility 10 is reduced until the release when the peak reduction demand response is issued. The operation rate of the operating parts that consume is lowered.

As shown in FIG. 4, when the second control unit 320 receives the peak reduction demand response command signal from the transceiver unit 310, the inlet pump 11 is stopped and the agitator of the anaerobic tank 20 is stopped. 21 to decelerate the operation, stop the operation of the internal conveying pump (14b), and serves to control the blower (12b) to decelerate operation.

Here, when the second control unit 320 receives the peak reduction demand response command signal, the stirring speeds of the stirrers 21 and 31 of the anaerobic tank 20 and the anoxic tank 30 are 20 of the speed before the peak reduction demand reaction command. While controlling to be ˜60%, the blower 12b is automatically controlled so that the dissolved oxygen concentration of the aerobic tank 40 becomes 30 to 70% of the dissolved oxygen concentration before the peak reduction demand response is issued. As a result, it is possible to cope with the peak reduction demand response by reducing the operation rate of the wastewater treatment facility 10 in accordance with the peak reduction demand response.

If the agitation rate of the anaerobic tank 20 and the anoxic tank 30 is less than 20% of the rate before the demand reaction issuance, it is difficult to completely mix the microorganisms of the anaerobic tank and the anaerobic tank, so that the microorganisms are locally precipitated and the activity of the microorganisms is lowered after the demand reaction is released. This is because there is a fear that if the content exceeds 60%, the goal of peak reduction may not be achieved.

When the dissolved oxygen concentration of the aerobic tank 40 is less than 30% of the dissolved oxygen concentration before the demand reaction is issued, it is difficult to maintain the aerobic microorganism in the aerobic state, there is a fear that the nitrification efficiency of the microorganisms after the demand reaction is released, 70 It is because there exists a possibility that exceeding% may be unable to achieve peak reduction objective.

The loss recovery control unit 400, as shown in Figure 2, to recover the amount of treatment water reduction due to the operation reduction during peak reduction demand response is issued, a timer for detecting and transmitting 1 hour before the peak reduction demand response issued 410 may be included.

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The loss recovery control unit 400 detects whether or not a buffer space (bs) exists in the flow rate adjustment tank 60 for storing the influent as shown in FIG. 2 and transmits the buffer space detection unit 420. It may include.

2 and 5, the loss recovery control unit 400 receives a signal transmitted from the timer 410 and the buffer space detecting unit 420, the buffer space (bs) to the flow rate adjustment tank (60) In this case, the inflow pump 11 is controlled to be rapidly accelerated so that the inflow water is rapidly filled in the buffer space, thereby increasing the inflow amount of the inflow water into the anaerobic tank 20, and the agitator 21 of the anaerobic tank 20. In addition, the operation of the stirrer 31, the internal conveying pump 14b, and the blower 12b of the oxygen-free tank 30 is accelerated and controlled to increase the throughput of the influent compared to the average throughput before the peak reduction demand response is issued. It may include a third control unit 430 to recover the loss due to the reduction in throughput.

Here, the sum of the amount of loss and recovery during the peak reduction demand response time of the treated water is sensed, and when the sum is smaller than the set throughput, the inflow of influent and anaerobic tank until the set throughput is released after the peak reduction demand response is released. Operation of the stirrer 21 of the 20, the stirrer 31 of the anoxic tank 30, the internal conveying pump 14b, and the blower 12b can be re-accelerated to increase the throughput of the treated water.

In this case, when all of the peak reduction demand response is not recovered during the time before the peak reduction demand response is issued, the recovery mode may be performed even after the peak reduction demand response is issued.

Although the above-described embodiment has been described with respect to the preferred embodiment of the present invention, it is noted that the present invention is not limited thereto and may be implemented in various forms without departing from the technical spirit of the present invention.

10: sewage water treatment facility 11: inflow pump
21: aeration device 12a: aeration pipe
12b: blower 13: return line
14a: internal conveying line 14b: internal conveying pump
15: water measuring instrument 20: anaerobic tank
21: stirrer 30: anoxic tank
31: stirrer 40: aerobic tank
50: sedimentation tank 60: flow rate adjustment tank
100: control system 200: power saving control unit
210: storage unit 220: setting unit
230: deviation calculation unit 240: first control unit
300: control unit for peak reduction demand response 310: transceiver
320: second control unit 400: loss amount recovery control unit
410: timer 420: buffer space detector
430: third controller

Claims (15)

A power saving control unit including a first control unit; a peak reduction demand response control unit including a second control unit; a loss amount recovery control unit including a third control unit; and a loss amount during a peak reduction demand response issue time; As an automatic operation control method for power saving and peak reduction demand response response of sewage treatment facilities using power saving and peak reduction demand response type automatic operation system having loss sensor transmitted to the control unit,
According to the deviation of the measured value and the set value for the inflow water, anoxic tank, aerobic tank, treated water COD _Cr , TN (total amount of nitrogen present in the treated water), NO ₃ ^-- N, NH ₄ ⁺ -N The controller controls the amount of conveyance of the internal conveying pump and the amount of blower of the blower to be variable,
Is -N measure NO ₃ ^{- -} The TN measure of the number of NO ₃ treatment of small, anoxic than TN set value smaller than the set value -N, the first control is to decrease the internal volume internal recycle compared to the present state Controlling the conveying pump; The TN measure of the number of processing is smaller than set value TN, NO ₃ in the anoxic tank ^- is -N measure NO ₃ ^- -N if greater than or equal to the set value, the first control is to maintain the present state quantity internal recycle Control an internal conveying pump; When the first control unit reduces the internal conveying amount, the first control unit controls the internal conveying pump so that the internal conveying flow rate does not become less than 50% of the influent flow rate flowing into the anaerobic tank;
When the TN measurement value of the treated water is larger than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank is larger than the NH ₄ ⁺ -N setting value, the first control unit increases the blowing amount to the exhalation tank than the present time. Control the blower as much as possible; If the measured TN value of the treated water is larger than the TN set value, and the NH ₄ ⁺ -N measured value of the exhalation tank is less than or equal to the NH ₄ ⁺ -N set value, the first controller determines that the amount of blown air to the exhaled tank is present. Control the blower to maintain a state; When the first control unit controls the blowing amount to the exhalation tank, the first control unit controls the dissolved oxygen in the aerobic tank by 40 to 60% of the difference between the NH ₄ ⁺ -N measurement value and the NH ₄ ⁺ -N setting value in the exhalation tank. Controlling the blower to increase the concentration;
When the TN measurement value of the treated water is smaller than the TN setting value, and the NH ₄ ⁺ -N measurement value of the exhalation tank is smaller than the NH ₄ ⁺ -N setting value, the first control unit reduces the blowing amount to the exhalation tank than the present time. Control the blower as much as possible; When the TN measurement value of the treated water is smaller than the TN setting value and the NH ₄ ⁺ -N measurement value of the exhalation tank is greater than or equal to the NH ₄ ⁺ -N setting value, the first control unit determines that the amount of blown air to the exhalation tank is present. Control the blower to maintain a state;
When the peak reduction demand response is issued, the second control unit controls the stirring speed of the anaerobic tank and the anoxic tank stirrer to be 20 to 60% of the speed before the peak reduction demand reaction is issued, and the dissolved oxygen concentration of the aerobic tank is before the peak reduction demand response is issued. And controlling to be 30 to 70% of the dissolved oxygen concentration, and controlling to return to a state before the peak reduction demand response is issued when the peak reduction demand response is released;
A timer detects that the peak reduction demand response is one hour before it is issued, and detects whether there is a buffer space in the flow adjustment tank by a buffer space detection unit, and if there is a buffer space in the flow adjustment tank, the peak reduction demand The rapid acceleration time is set until immediately before the reaction is issued, and the inflow flow rate of the inflow water, the stirrer operation speed of the anaerobic tank, the internal conveyance amount by the internal conveying pump, and the operation of the blower during the rapid acceleration time by the third controller. Further accelerating the speed, thereby recovering the treatment loss of the influent during peak reduction demand response time;
When the loss amount during the peak reduction demand response issuance time sensed by the loss amount detection sensor is smaller than the set recovery amount previously stored in the third control unit, the set recovery amount after the peak reduction demand response is released by the third control unit. Power saving and peak reduction of wastewater treatment facilities using automatic response system for power saving and peak reduction, which further includes re-acceleration of inflow of influent, anaerobic agitator, anoxic tank agitator, internal return pump, and blower to Demand response response automatic operation control method.
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When the second control unit receives a peak reduction demand response command signal from the transmission and reception unit, the inflow pump is stopped, the agitator of the anaerobic tank is decelerated, the internal conveying pump is stopped, and the blower And an automatic operation control method for power saving and peak reduction demand response response of a wastewater treatment plant using an automatic operation system for power saving and peak reduction demand response.

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