KR101547766B1 - System and method for controlling wastewater treatment apparatus using multi stage denitrification/nitrification processing - Google Patents

Abstract

The present invention relates to a system and a method for controlling a wastewater treatment apparatus by using multi-stage denitrification/nitrification processes, wherein the denitrification/nitrification processes are separated and arranged in a multi-stage manner to maximize the amount of wastewater treated and treatment efficiency. The system for controlling a wastewater treatment apparatus including multiple denitrification/nitrification tanks and a flow adjustment tank which perform multi-stage denitrification/nitrification processes comprises: a first sensing unit sensing ORP and MLSS for denitrificated water in a denitrification tank; a second sensing unit sensing ORP and MLSS for nitrificated water in a nitrification tank; a first pump unit transporting denitrificated water in a denitrification tank to another denitrification tank according to a control signal; a second pump unit transporting nitrificated water in a nitrification tank to another nitrification tank according to a control signal; and a control unit controlling the first pump unit to transport denitrificated water to another denitrification tank for re-denitrification of the denitrificated water when the values of ORP and MLSS for denitrificated water received by the first sensing unit are greater than first reference values and controlling the second pump unit to transport nitrificated water to another nitrification tank for re-nitrification of the nitrificated water when the values of ORP and MLSS for nitrificated water received by the second sensing unit are greater than second reference values.

Description

TECHNICAL FIELD [0001] The present invention relates to a control system and a control method for a wastewater treatment apparatus using a multi-stage denitrification / nitrification process,

The present invention relates to a wastewater treatment control system and, more particularly, to a control system and a control method for a wastewater treatment apparatus using a multi-stage denitrification / nitrification process for maximizing the throughput and treatment efficiency of wastewater by separating and arranging denitrification / .

Generally, as pollutants in sewage, wastewater and sewage, organic matter, solids, nitrogen and phosphorus are regulated, and biological treatment processes are mainly utilized for their treatment.

Here, the biological treatment process can be performed by a denitrification process and a nitrification process.

The denitrification process is a process for reducing nitrate nitrogen from nitrogen gas. The process includes the steps of pseudomonas, micrococus, archromobacter, thiobacillus, and bacillus. Microorganisms can be involved.

In addition, the nitrification process is a process in which ammonia in water is converted into nitrate nitrogen. The nitrosomonas transforms ammonia into nitrite nitrogen in a first step and a nitrobactor converts nitrite nitrogen into nitrate nitrogen. A second step of conversion to acidic nitrogen can be carried out.

The denitrification / nitrification process may be composed of a deformation structure other than the AO (Anoxic-Oxic) process or the A2O2 (A-O-A-O) process, which is composed of a shearing denitrification tank and a downstream nitrification tank.

1 is a schematic view showing a conventional denitrification / nitrification process, showing a conventional wastewater treatment apparatus.

As shown in FIG. 1, the single denitrification / nitrification process of the conventional wastewater treatment apparatus can be roughly composed of the shear denitrification tank 20 and the downstream nitrification tank 30.

The shear denitrification tank 20 includes a plurality of denitrification vessels 21 and 22 and the subsequent stage nitrification tank 30 may include a plurality of nitrification vessels 31, 32, 33, 34, have.

At this time, the plurality of denitrification vessels and the plurality of nitrification vessels may be arranged in series in succession.

The denitrification / nitrification process of the waste water treatment apparatus including the shear denitrification tank 20 and the downstream nitrification tank 30 is as follows.

First, when the contaminated water containing contaminants is introduced into the shear denitrification tank 20, the denitrification process occurs in which the nitrate nitrogen is reduced from the nitrogen gas while passing through the plurality of denitrification tanks 21, 22 .

The denitrification water 11 having undergone the denitrification process flows back into the continuously arranged rear end nitrification tank 30 and flows through the plurality of nitrification tank 31, 32, 33, 34, A nitrification process occurs in which ammonia is converted to nitrate nitrogen.

The nitrified water 12 subjected to the nitrification process is discharged from the nitrification tank 30 and is contained in the sedimentation tank 40.

Next, the sludge 14 is settled and the settled sludge 14 can be discharged to the outside, after a predetermined time has elapsed in the discharged water 13 contained in the settling tank 40.

Further, the discharged water 13 in which the sludge has settled may be discharged to the outside or may be subjected to the following treatment process.

However, in the single denitrification / nitrification process of the conventional wastewater treatment apparatus, as the amount of wastewater to be treated is increased, the treatment efficiency of T-N (total nitrogen) is lowered and there is a limit in the amount of wastewater treatable for a day.

In addition, in order to increase the daily wastewater throughput, a further wastewater treatment plant capable of performing a single denitrification / nitrification process must be additionally constructed, which causes a problem of a large cost.

As described above, the conventional wastewater treatment apparatus for performing the single denitrification / nitrification process has limitations in increasing the wastewater throughput, and there is a problem that the treated wastewater is deteriorated due to an increase in wastewater throughput.

Therefore, there is a need to develop a wastewater treatment apparatus capable of ensuring efficiency and economical efficiency so as not to physically increase the treatment facilities, increase the wastewater throughput and deteriorate the treated water quality in the future.

An object of the present invention is to provide a method and an apparatus for efficiently and economically ensuring the efficiency of wastewater treatment without deteriorating the quality of the treated water without physically increasing the treatment facility by using a multi-stage denitrification / nitrification process. A control system and a control method of a wastewater treatment apparatus which can be operated by a user.

A control system of a wastewater treatment apparatus according to an embodiment of the present invention is a control system for a wastewater treatment apparatus that performs a multi-stage denitrification / nitrification process, including a flow rate adjustment tank and a plurality of denitrification / nitrification treatment tanks having a denitrification tank and a nitrification tank A first sensing unit for sensing the ORP (Oxidation Reduction Potential) and the MLSS (Mixed Liquer Suspended Solid), particularly the ORP, of the denitrification water in the denitrification tank; and a second sensing unit for sensing the ORP and MLSS for the nitrification- A second pump unit for transferring the nitrified water of the nitrification tank to another nitrification tank in accordance with the control signal; If the ORP value for the denitration treatment water received from the first sensing unit is larger than the first reference value, the control unit may be configured to transmit the denitration treatment water to another denitrification tank for the denitrification treatment of the denitrification- And if the ORP value for the nitrification water received from the second sensing unit is larger than the second reference value, the second pump unit is controlled so as to transfer the nitrified water to the other nitrification tank for oxidation of the nitrified water, And a control unit for controlling the control unit.

A control method of a wastewater treatment apparatus according to an embodiment of the present invention is a wastewater treatment apparatus for performing a multi-stage denitrification / nitrification process, including a flow rate adjustment tank and a plurality of denitrification / nitrification treatment tanks having a denitrification tank and a nitrification tank As a control method, there are a step of sensing the ORP (Oxidation Reduction Potential) and MLSS (Mixed Liquer Suspended Solid), particularly the ORP, of the denitrification water in the denitrification tank and sensing ORP and MLSS for the nitrification water in the nitrification tank, Comparing the ORP value and the MLSS value, particularly the ORP value, with the first reference value, and comparing the ORP value and the MLSS value, particularly the ORP value, with the second reference value for the sensed nitrification water; , If the ORP value for the denitrification water is larger than the first reference value, the denitrification water is transferred to the other denitrification tank for the denitrification treatment of the denitrification water, and the ORP value for the nitrification water is lower than the second reference value Large, it may comprise a material for the oxidation treatment of the nitrification process, sending a number of different nitrification process twos nitride.

Here, the present invention is characterized in that, prior to the step of sensing the ORP and the MLSS, the step of measuring the contamination degree of the contaminated water stored in the flow rate adjustment tank and the step of transmitting the contaminated water among the plurality of denitrification / Determining a denitrification tank, and transmitting the polluted water to the determined denitrifying tank.

The present invention further provides a method for treating a denitrification treatment water, comprising the steps of: transferring the denitrification water to another denitrification tank for reutilization treatment of the denitrification water; measuring the amount of the denitrification water stored in the other denitrification tank; Determining whether the amount of the denitration treatment water exceeds the reference amount, and stopping the transmission of the denitration treatment water if the amount exceeds the reference amount.

The present invention also provides a method for nitrifying nitrified wastewater, comprising the steps of: transferring nitrified water to another nitrification tank for oxidation of nitrified wastewater; measuring the amount of nitrified wastewater stored in another nitrification tank; Determining whether the amount exceeds the reference amount, and stopping the transfer of the nitrified water when the reference amount is exceeded.

According to an embodiment of the present invention, a multi-stage denitrification / nitrification process can be used to increase effluent throughput without physically increasing the treatment facility, while at the same time ensuring efficiency and economy, It is effective.

That is, according to the present invention, since the SBR process of the flow rate regulator and the multi-stage denitrification / nitrification process of the multi-stage denitrification / nitrification treatment tank are performed, the moving speed is delayed about twice in the space of the same capacity, The treatment efficiency of the water can be maximized and the treatment capacity can be increased.

1 is a view showing a conventional waste water treatment apparatus
2 is a schematic block diagram of a control system of a wastewater treatment apparatus according to the present invention.
3 is a view showing an example of a control system of a wastewater treatment apparatus according to the present invention
4 to 6 are flowcharts for explaining the control method of the wastewater treatment apparatus according to the present invention

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The suffix "module" and " part "for components used in the following description are given merely for ease of description, and the" module "and" part "

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

As used herein, terms used in the present invention are selected from general terms that are widely used in the present invention while taking into account the functions of the present invention, but these may vary depending on the intention or custom of a person skilled in the art or the emergence of new technologies. In addition, in certain cases, there may be a term arbitrarily selected by the applicant, in which case the meaning thereof will be described in the description of the corresponding invention. Therefore, it is intended that the terminology used herein should be interpreted based on the meaning of the term rather than on the name of the term, and on the entire contents of the specification.

FIG. 2 is a schematic block diagram of a control system of a wastewater treatment apparatus according to the present invention, including a flow rate adjusting tank, a denitrification tank, and a plurality of denitrification / nitrification treatment tanks having a nitrification tank, The control system of the device is shown.

2, the control system of the wastewater treatment apparatus according to the present invention is provided with a flow rate adjusting tank (not shown) and denitrifying baths 121 and 131 and nitrification baths 122, 123, 132, 133 and 134 A plurality of denitrification / nitrification treatment tanks 120 and 130 and a first sensing unit for sensing ORP (Oxidation Reduction Potential) and MLSS (Mixed Liquer Suspended Solid) for the denitration treatment water of the denitrification tank 121, A second sensing unit 220 for sensing the ORP and MLSS of the nitrification water in the nitrification tank 122 and a control unit for controlling the denitration treatment water of the denitrification tank 121 or 131 in accordance with a control signal, (133 or 122) for transferring the nitrified water of the nitrification tank (122 or 133) to the other nitrification tank (133 or 122) in accordance with the control signal, and a second pump unit If the ORP value for the denitration treatment water received from the pump unit 320 and the first sensing unit 210 is greater than the first reference value, for the denitration treatment of the denitration treatment water, If the ORP value for the nitrification water received from the second sensing unit 220 is greater than the second reference value, the first pump unit 210 is controlled to transfer the vaginal treatment water to another denitrification tank, And a control unit 400 for controlling the second pump unit 320 to transfer the nitrified water to another nitrification tank for material oxidation treatment.

The first sensing unit 210 includes a first ORP sensor 212 for sensing the ORP with respect to the denitration treatment water in the denitration tank 121 or 131, And a first MLSS sensor 214 sensing the MLSS.

The second sensing unit 220 includes a second ORP sensor for sensing the ORP with respect to the nitrification water in the nitrification tank 122 or 133 and a second ORP sensor for sensing the MLSS for the nitrification water in the nitrification tank 122 or 133 Lt; RTI ID = 0.0 > MLSS < / RTI >

When the denitrification / nitrification treatment tank 120 or 130 includes a single denitrification tank 121 or 131 and a plurality of nitrification tank 122 or 123 or 132, 133, or 134, The unit 210 may be mounted on one of the denitrification vessels 121 or 131 and the second sensing unit 220 may be mounted on any one of the plurality of nitrification vessels 122 or 133.

Next, the first pump unit 310 includes at least one first underwater pump 312 disposed in the denitration treatment water, and the second pump unit 320 includes at least one 2 submersible pump 324, as shown in FIG.

The first pump unit 310 may be disposed in the denitrification tank in which the first sensing unit 210 is installed and the second pump unit 320 may be disposed in the nitrification tank in which the second sensing unit 220 is installed. have.

The first pump unit 310 transfers denitrification water accommodated in the denitrification tank through the denitrification water transfer tube connected to the denitrification vessels of the adjacent denitrification / nitrification treatment vessels, and the second pump unit 320 can transfer the nitrified water contained in the nitrification tank through the nitrification water transfer tube connected to the nitrification tank of the denitrification / nitrification tank adjacent to each other.

Here, the denitrification water transfer tube includes at least one first electric valve for opening and closing the transfer of the denitrification water, and the nitrification water transfer tube includes at least one second electric motor for opening / . ≪ / RTI >

At this time, the first electromotive valve opens and closes the transmission of the denitration treatment water in accordance with the first control signal of the control section 400, and the second electromotive valve opens the nitrification treatment water Can be opened and closed.

The control unit 400 controls the flow rate of the polluted water to be mixed and equalized and stores the polluted water in the denitrification / nitrification treatment tank (not shown) Can be transferred to the denitrification tank through a distribution transfer pipe connected to the denitrification tank.

Here, the distribution transfer tube includes at least one third motor-operated valve for opening and closing the transmission of the contaminated water, and the third motor-operated valve is opened and closed in accordance with the third control signal of the control unit 400 .

The control unit 400 further includes a first controller for controlling the first pump unit 310 according to the ORP value and the MLSS value of the denitration treatment water received from the first sensing unit 210, And a second controller for controlling the second pump unit 320 according to the ORP value and the MLSS value of the nitrified water received from the second pump unit 220.

The first controller is disposed in the denitrification tank having the first sensing unit 210 and the first pump unit 310 and the second controller is disposed in the denitrification tank having the second sensing unit 220 and the second pump unit 320, Can be placed in a nitrification tank equipped with a nitrification tank.

When the denitration treatment water is transferred to another denitrification tank for the denitrification treatment of the denitrification treatment water, the control unit 400 determines the amount of the denitrification treatment water to be transported in accordance with the amount of the denitrification treatment water stored in the other denitrification tank, When the nitrified water is transferred to another nitrification tank for the material oxidation treatment of nitrified water, the amount of nitrified water to be treated can be determined according to the amount of nitrified water stored in the other nitrified tank.

In the control unit 400, the first reference value for the denitration treatment water and the second reference value for the nitrification treatment water may be different from each other, but they may be equal to each other in some cases.

Then, the control unit can transmit the contaminated water to at least one denitrification tank among the plurality of denitrification / nitrification treatment vessels in accordance with the contamination degree of the contaminated water stored in the flow rate adjustment tank.

The control system of the present invention configured as described above is capable of increasing efficiency and economical efficiency so as not to physically increase the treatment facility and increase the wastewater throughput by using a multi-stage denitrification / nitrification process, can do.

That is, the control system of the present invention performs the SBR process of the flow rate regulating unit and the multi-stage denitrification / nitrification process of the multi-stage denitrification / nitrification treatment tank to reduce the moving speed by about two times in the space of the same capacity, It is possible to maximize the treatment efficiency of the contaminated water and increase the treatment capacity.

3 is a view showing an example of a control system of a wastewater treatment apparatus according to the present invention.

As shown in FIG. 3, the present invention includes a flow rate adjusting tank 110 for storing the polluted water to be treated, mixing and equalizing the polluted water to be treated, And a plurality of denitrification / nitrification treatment tanks 120 and 130 sequentially disposed so that the denitrification / nitrification process of the contaminated water flowing from the adjustment tank 110 is repeated.

Here, the plurality of denitrification / nitrification treatment tanks 120 and 130 include, for example, two denitrification / nitrification treatment tanks 120 and 130 as in the first stage denitration / nitrification treatment tank 120 and the second stage denitrification / The structures arranged side by side are described, but are not limited thereto.

At this time, the first-stage denitrification / nitrification treatment tank 120 is disposed in the denitration treatment water flowing from the flow rate adjustment tank 110 and the denitration treatment water flowing from the second-stage denitrification tank 131 of the two-stage denitrification / Stage denitrification tank 132, which is a denitration treatment water flowing in from the first-stage denitrification tank 121 and a second-stage denitrification / nitrification treatment tank 130, which performs at least any one denitrification process, 133, and 134, respectively, to perform the nitrification process of at least one of the nitrified nitrifiers 122 and 123.

The two-stage denitrification / nitrification treatment tank 130 is configured to perform the nitrification treatment to be introduced from the first stage nitrification tank 122 or 123 of the first stage denitrification / nitrification treatment tank 120, Stage denitrification tank (131) for performing a denitration process of at least one of water and denitrification water introduced from the first-stage denitrification tank (121) of the first-stage denitrification / nitrification treatment tank (120) Nitrification water entering from the first-stage nitrification tank 122 of the first-stage denitrification / nitrification treatment tank 120 and nitrification-treated water introduced from the first-stage nitrification tank 122 of the first-stage denitrification / 132, 133, 134).

The first ORP sensor 212 for sensing the ORP of the denitrification water in the first or second denitrification tank 121 or 131 is disposed in the first and second denitrification vessels 121 and 131, The first MLSS sensor 214 for sensing the MLSS of the denitrification water in the first or second denitrification tank 121 or 131 is disposed in the first and second denitrification basins 121 and 131, respectively.

The second ORP sensor for sensing the ORP with respect to the nitrified water in the first or second stage nitrification tank 122 or 133 is disposed in the first and second stages nitrification tank 122 or 133, The second MLSS sensor for sensing the MLSS for the nitrified water in the two-stage nitrification tank 122 or 133 is disposed in the first and second stages nitrification tank 122 and 133, respectively.

When each denitrification / nitrification treatment tank 120 or 130 includes one denitrification tank 121 or 131 and a plurality of nitrification tank 122 or 123 or 132, 133 or 134, the first ORP sensor The first MLSS sensor 212 and the first MLSS sensor 214 are mounted on one denitrification tank 121 or 131 and the second ORP sensor 222 and the second MLSS sensor 224 are mounted on one denitrification tank 121 or 131, And can be mounted to one nitrification tank 122 or 133.

The first underwater pump 312 is disposed in the first or second denitrification tank 121 or 131 equipped with the first ORP sensor 212 and the first MLSS sensor 214 and the second underwater pump 322 may be disposed in a first or second stage nitrification tank 122 or 133 equipped with a second ORP sensor 222 and a second MLSS sensor 224.

In order to perform a multi-stage denitrification / nitrification process, the present invention is connected to a first-stage denitrification tank 121 of a flow rate control tank 110 and a first-stage denitrification / nitrification treatment tank 120, Stage denitrification tank 131 of the two-stage denitrification / nitrification treatment tank 130 so that the contaminated water contained in the flow rate adjustment tank 110 is supplied to the first-stage denitrification tank 121 And a two-stage denitrification tank 131 of a two-stage denitrification / nitrification treatment tank 130, respectively.

Here, the first distribution transfer pipe 141 of the distribution transfer pipe 140 is connected to the first-stage denitrification tank 121 of the flow rate control tank 110 and the first-stage denitrification / nitrification treatment tank 120, The second distribution transfer pipe 142 of the denitrification / nitrification treatment tank 130 may be connected to the two-stage denitrification tank 131 of the flow rate control tank 110 and the two-stage denitrification / nitrification treatment tank 130.

At this time, the contaminated water flowing into the first-stage denitrification tank (121) and the contaminated water flowing into the second-stage denitrification tank (131) through the first distribution transfer pipe (141) May flow at the same time, and the flow rate to be introduced may be the same.

Here, the first and second distribution transfer pipes 141 and 142 include at least one third motor-operated valve 190a and 190b for opening and closing the transfer of polluted water, and the third motor- It is possible to open and close the transmission of the contaminated water in accordance with the third control signal.

The present invention also relates to a two-stage denitrification tank (first denitrification tank) of a first denitration unit 121 and a second denitration / nitrification unit 130 of a first denitration / nitrification treatment tank 120 to perform a multi- And a denitrification water transfer pipe 150 connected to the denitrification tank 131 for transferring denitrification water contained in the denitrification tank to each other.

The first denitrification water transfer pipe 151 of the denitrification water transfer pipe 150 is connected to the first denitrification / denitrification tank 121 of the first denitration / nitrification treatment tank 120 and the second denitrification / The denitration treatment water stored in the first-stage denitration tank 121 is transferred to the second-stage denitrification tank 131 and the second-stage denitration treatment tank 131 of the denitration treatment water transfer pipe 150 is connected to the two- The denitrification water transfer pipe 152 is connected to the two-stage denitrification tank 131 of the one-stage denitrification tank 121 of the first denitration / nitrification treatment tank 120 and the two-stage denitrification / nitrification treatment tank 130 , The denitrification water accommodated in the two-stage denitrification tank 131 can be transferred to the first-stage denitrification tank 121.

Here, the denitrification water transfer pipe 150 may include at least one first electric valve 170a, 170b for opening and closing the transfer of the denitrification water.

At this time, the first electric valves 170a and 170b can open and close the transmission of the denitration treatment water in accordance with the first control signal of the control unit.

In order to perform a multi-stage denitrification / nitrification process, the present invention is characterized in that any one of the one-stage denitrification vessels 122, 123 of the one-stage denitrification / nitrification treatment tank 120 and the two- Treated nitrified water transfer pipe 160 connected to any one of the two-stage nitrified nitrifiers 132, 133, and 134 for transferring the nitrified wastewater contained in the nitrified nitrification tank to each other.

Here, the first nitrified water transfer tube 161 of the nitrification-treated water transfer pipe 160 is connected to any one of the first-stage nitrifiers 122, 123 of the first-stage denitrification / nitrification treatment tank 120, The nitrified water stored in the one-stage nitrification tank 122, 123 is connected to one of the two-stage nitrifying tank 132, 133, 134 of the denitrification / nitrification tank 130, 133 and 134 and the second nitrification water transfer pipe 162 of the nitrification water transfer pipe 160 is connected to the first nitrification unit 122 and 123 of the first unit denitrification / nitrification treatment tank 120, Nitrification treatments accommodated in the two-stage nitrification tank 132, 133, 134 are connected to any one of the two-stage nitrification tank 132, 133, 134 of the two-stage denitrification / Can be transferred to the single-stage nitrification tank (122, 123).

Here, the nitrified water transfer tube 160 may include at least one second electric valve 180a, 180b that opens and closes the transfer of nitrified water.

At this time, the second electromotive valves 180a and 180b can open and close the transfer of the nitrified water according to the second control signal of the control unit.

Next, the first controller 410 controls the first underwater pump 312 in accordance with the ORP value and the MLSS value for the denitration treatment water sensed from the first ORP sensor 212 and the first MLSS sensor 214 And the second controller 420 controls the second underwater pump 322 in accordance with the ORP value and the MLSS value for the nitrified water sensed from the second ORP sensor 222 and the second MLSS sensor 224 can do.

Here, the first controller 410 is disposed in the denitrification tank equipped with the first ORP sensor 212, the first MLSS sensor 214, and the first underwater pump 312, and the second controller 420, The second ORP sensor 222 and the second MLSS sensor 224, and the second underwater pump 322 are mounted.

Further, when the denitration treatment water is transferred to another denitrification tank for re-denitration treatment of the denitrification-treated water, the first controller 410 determines the amount of the denitrification-treated water to be transported in accordance with the amount of the denitrification-treated water stored in the other denitrification tank .

The second controller 420 determines the amount of the nitrified water to be treated in accordance with the amount of nitrified water stored in the other nitrified tank when the nitrified water is transferred to another nitrification tank for the material oxidation treatment of the nitrified water .

Depending on the case, the control unit may transmit the contaminated water to at least one denitrification tank among the plurality of denitrification / nitrification treatment vessels in accordance with the contamination degree of the contaminated water stored in the flow rate adjustment tank 110.

That is, the pump control unit installed in the denitrification tank receives the pollution degree through the pollution degree measurement unit that measures the pollution degree of the polluted water in the denitration tank, and determines whether or not the denitration process of the denitration process water subjected to the denitration process is performed based on the received pollution degree And controls the operation of the first underwater pump 312, which is a denitration treatment water pump, so that the denitration treatment water can be transferred to the denitration treatment water transfer pipe 150.

The pump control unit mounted in the nitrification tank receives the pollution degree through the pollution degree measuring unit that measures the pollution degree of the polluted water in the nitrification tank and determines whether or not the nitrified water subjected to the nitrification process is oxidized And controls the operation of the second submerged pump 322, which is a nitrification-treated water pump, so that the nitrified water can be transferred to the nitrified water transfer tube 160.

Here, the pollution degree measuring unit may measure at least one of ORP (Oxidation Reduction Potential) and MLSS (Mixed Liquer Suspended Solid) of the treated water.

As described above, according to the present invention, it is possible to measure the degree of pollution with respect to contaminated water in the denitrification tank and the nitrification tank, to perform the repeated treatment according to the degree of contamination, to increase the reaction time for the contaminated water treatment, Can be maximized.

Further, in the present invention, there may be one denitrification tank of each denitrification / nitrification treatment tank, and a plurality of nitrification tank of each denitrification / nitrification treatment tank.

The reason for this is to further increase the nitrification reaction time of each denitrification / nitrification treatment tank to reduce contamination degree of contaminated water.

For example, the plurality of denitrification / nitrification treatment tanks may include a single-stage denitrification tank, a single-stage denitrification / nitrification treatment tank 120 including a plurality of single-stage nitrification tank, a single two-stage denitrification tank, The denitrification tank 121 is disposed between the flow rate adjusting tank 110 and the one-stage nitrification tank and is connected to a two-stage denitrification tank 131) may be disposed between the first stage nitrification tank and the second stage nitrification tank.

Here, the number of the single-stage nitrifying tank may be smaller than the number of the two-stage nitrifying tank.

For example, the number of the single-stage nitrification tank is N, and the number of the two-stage nitrifying tank may be N + 1, but is not limited thereto.

Namely, as shown in FIG. 3, the single-stage nitrifying tank includes first and second nitrifiers 122 and 123, the two-stage nitrifiers include third, fourth and fifth nitrifiers 132, 133, and 134, Wherein the first nitrification tank 122 is disposed between the first denitrification tank 121 and the second nitrification tank 123 and is provided with a first nitrification treatment And the fourth nitrification tank 133 is disposed between the third nitrification tank 132 and the fifth nitrification tank 134 so that the nitrified water And to the second nitrified water transfer tube 162 to be transferred.

The first-stage denitrification tank 121 is connected to the distribution transfer pipe 140 through which the contaminated water is transferred from the flow rate adjustment tank 110 and is supplied to the first denitration treatment water transfer Stage denitrification tank 131 is connected to the distribution transfer pipe 140 through which the contaminated water is transferred from the flow rate control tank 110 and the denitration treatment water is transferred from the first stage denitrification tank 121 Can be connected to the second denitration treatment water transfer pipe 152.

Here, the contaminated water flowing into the first-stage denitrification tank 121 and the contaminated water flowing into the second-stage denitrification tank 131 are simultaneously introduced through the distribution transfer pipe 140, have.

In the first stage denitrification tank 121 and the second stage denitrification tank 131, an inlet through which polluted water flows is located at an upper portion and an outlet through which polluted water is discharged may be located at a lower level.

The first-stage nitrification tank 122, 123 and the second-stage nitrification tank 132, 133, 134 may have both an inlet through which polluted water flows and an outlet through which polluted water is discharged.

Here, the inlet port and the outlet port may be arranged in a zigzag form so as to be shifted from each other.

Subsequently, at least one of the first-stage denitrifying tank 121, the second-stage denitrifying tank 131, the first-stage nitrifying tank 122, and the second-stage nitrifying tank 132, 133, To minimize loss, a rectifying plate may be installed.

In addition, the flow rate regulator 110 of the present invention may be configured as a SBR (Sequencing Batch Reactor).

This is because it is possible to secure the time for the inflowing contaminated water to sufficiently stay in the flow rate adjusting tank 110 and to reduce the contamination degree of the contaminated water in advance in the flow rate adjusting tank 110, I can do it.

4 to 6 are flowcharts for explaining a control method of a wastewater treatment apparatus according to the present invention.

4 to 6, the control method of the wastewater treatment apparatus of the present invention is characterized in that the ORP (Oxidation Reduction Potential) and the MLSS (Mixed Liquer Suspended Solid) of the denitrification- And the ORP and the MLSS for the nitrification water of the nitrification tank are sensed by the second sensing unit. (S10)

Here, the controller of the present invention measures the contamination degree of the contaminated water stored in the flow rate adjusting tank before the step of sensing the ORP and the MLSS. (S12)

Then, the control unit determines the denitrification tank to which the contaminated water is to be sent, from among the plurality of denitrification / nitrification treatment vessels, according to the measured degree of contamination (S14)

Next, the control unit transmits the contaminated water to the determined denitrification tank (S16)

Then, the control unit compares the ORP value and the MLSS value with the first reference value for the sensed denitration treatment water, and compares the ORP value and the MLSS value with the second reference value with respect to the sensed nitrification treatment number (S20).

If the ORP value and the MLSS value for the denitration treatment water are larger than the first reference value as a result of the comparison, the control unit transmits the denitration treatment water to another denitrification tank for the denitrification treatment of the denitrification treatment water, The nitrified water can be transferred to another nitrification tank for material oxidation treatment of the nitrified wastewater (S30). If the ORP value and the MLSS value are greater than the second reference value,

The control unit of the present invention measures the amount of denitrification water stored in another denitrification tank after the step of transferring the denitrification water to another denitrification tank for the denitrification treatment of the denitrification water (S32)

Then, the control unit confirms whether the amount of the measured denitration treatment water exceeds the reference amount (S34)

Next, when the reference amount is exceeded, the control section stops the transmission of the denitration treatment water (S36)

The control unit of the present invention measures the amount of nitrified water stored in the other nitrification tank after the step of transferring the nitrified water to the other nitrification tank for the oxidation treatment of the nitrified water.

Next, the control unit confirms whether the amount of the nitrification treated water exceeds the reference amount. (S34)

Next, when the reference amount is exceeded, the control section stops transmission of the nitrified water (S36)

As described above, the present invention can ensure efficiency and economical efficiency by using a multi-stage denitrification / nitrification process so as not to physically increase the treatment facility but increase the wastewater treatment amount and deteriorate the treated water quality.

That is, according to the present invention, since the SBR process of the flow rate regulator and the multi-stage denitrification / nitrification process of the multi-stage denitrification / nitrification treatment tank are performed, the moving speed is delayed about twice in the space of the same capacity, The treatment efficiency of the water can be maximized and the treatment capacity can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

110: flow rate regulator 120: first stage denitration / nitrification treatment tank
130: Two-stage denitrification / nitrification treatment tank 140: Distribution transfer tube
150: denitrification water transfer pipe 160: nitrified water transfer pipe
170: first electric valve 180: second electric valve
190: third electromechanical valve 210: first sensing part
220: second sensing unit 310: first pump unit
320: second pump unit 400:

Claims (20)

Flow regulator; And a plurality of denitrification / nitrification treatment tanks including a first stage denitrification / nitrification treatment tank and a second stage denitrification / nitrification treatment tank, the control system for a multi-stage denitrification / nitrification process comprising:
Wherein each denitration / nitrification treatment tank of the plurality of denitration / nitrification treatment tanks includes one denitrification tank and a plurality of nitrification tank,
Wherein the first denitration / nitrification treatment tank performs a denitration process of at least one of the contaminated water flowing in from the flow rate adjusting tank and the denitration treated water flowing in from the two-stage denitrification tank of the two-stage denitration / nitrification treatment tank, And a single-stage nitrification tank for carrying out a nitrification process of at least one of denitrification water introduced from the first-stage denitrification tank and nitrified water introduced from a two-stage nitrification tank of the second-stage denitrification / nitrification treatment tank,
Wherein the two-stage denitrification / nitrification treatment tank is fed from the first stage denitrification tank of the first-stage denitrification / nitrification treatment tank and the first stage denitrification / nitrification treatment tank, The denitrification water flowing from the two-stage denitrification tank and the nitrification water fed from the one-stage nitrification tank of the first-stage denitrification / nitrification treatment tank, at least one of the denitrification water A two-stage nitrification tank for performing any nitrification process,
The first ORP sensor and the first MLSS sensor are both disposed in the first and second denitrification tank,
The second ORP sensor and the second MLSS sensor are both located in the first and second stages nitrification tank,
A first submerged pump is respectively disposed in the first-stage denitrification tank and the second-stage denitrification tank in which the first ORP sensor and the first MLSS sensor are disposed,
A second submerged pump is disposed in each of the one-stage nitrification tank and the two-stage nitrification tank in which the second ORP sensor and the second MLSS sensor are disposed,
Wherein the distribution transfer pipe is connected to the flow rate adjusting tank and the first stage denitrification tank of the first stage denitrification / nitrification treatment tank and is connected to the two-stage denitrification tank of the flow rate adjustment tank and the second stage denitrification / nitrification treatment tank, And a first distribution transfer pipe connected to the first-stage denitrification tank of the first-stage denitration / nitrification treatment tank; And a second distribution transfer pipe connected to the two-stage denitrification tank of the flow rate adjusting tank and the two-stage denitrification / nitrification treatment tank, and
Wherein the nitrified water transfer tube is connected to any one of the one-stage denitrification vessels of the first-stage denitration / nitrification treatment tank and the second-stage denitrification tank of the second-stage denitrification / nitrification treatment tank, Nitrification treatment water contained in the one-stage denitrification tank is connected to any one of the one-stage denitrification vessels of the first-stage denitration / nitrification treatment tank and the two-stage denitrification tank of the second- A first nitrified water transfer tube for transferring the nitrified water to a two-stage nitrification tank; Nitrification treatment water contained in the two-stage nitrification tank is connected to any one of the one-stage nitrification tank of the one-stage denitrification / nitrification treatment tank and the two-stage nitrification tank of the two- And a second nitrified water transfer tube for transferring the nitrified water to the first nitrification tank,
If the ORP value for the denitration treatment water received from the first ORP sensor is larger than the first reference value, the control unit controls the first denitration treatment water to transfer the denitration treatment water to another denitrification tank for re- And if the ORP value for the nitrification water received from the second ORP sensor is larger than the second reference value, the nitrification water is transferred to another nitrification tank for oxidation of the nitrification water And a control unit for controlling the second submerged pump,
The first underwater pump transmits denitrification water accommodated in the denitrification tank through a denitrification water transfer tube connected to the denitrification vessels of the denitrification / nitrification treatment vessel adjacent to each other, The nitrification treatment water contained in the nitrification tank is transferred through a nitrification treatment water transfer tube connected to the nitrification tank of the denitrification / nitrification treatment tank adjacent to each other, wherein the denitrification treatment water transfer tube opens and closes the transfer of the denitration treatment water Wherein the nitrification treatment water transfer tube includes at least one first electric valve and at least one second electric valve that opens and closes the transfer of the nitrification water, 1 " in accordance with a first control signal, and the second electrically operated valve opens and closes the transfer of the denitration treatment water in accordance with the first control signal, Control system of the waste water treatment apparatus, characterized in that the transmission is configured to be opened and closed. delete delete delete delete delete delete delete delete The apparatus according to claim 1, wherein the flow rate adjusting tank stores the polluted water to be treated, mixes and equalizes the polluted water to be treated,
Wherein the control unit transmits the contaminated water to the denitrification tank through a distribution transfer pipe connected to the denitrification tank of each of the denitrification / nitrification treatment tanks in accordance with the control signal of the control unit. 11. The apparatus of claim 10, wherein the distribution transfer tube includes at least one third electric valve for opening and closing transmission of the contaminated water,
Wherein the third electromotive valve opens and closes the transfer of the contaminated water according to a third control signal of the control unit. The apparatus of claim 1,
A first controller for controlling the first pump unit according to an ORP value of the denitration treatment water received from the first sensing unit;
And a second controller for controlling the second pump unit in accordance with the ORP value of the nitrification water received from the second sensing unit. 13. The apparatus according to claim 12, wherein the first controller is disposed in the denitrification tank equipped with the first sensing unit and the first pump unit,
Wherein the second controller is disposed in a nitrification tank equipped with the second sensing unit and the second pump unit. 14. The apparatus of claim 13,
The amount of the denitration treatment water is determined in accordance with the amount of the denitration treatment water stored in the other denitrification tank when the denitration treatment water is transferred to another denitrification tank for the re-denitration treatment of the denitration treatment water,
Characterized in that the amount of nitrification water to be treated is determined in accordance with the amount of nitrification water stored in the other nitrification tank when the nitrification water is transferred to another nitrification tank for oxidation of the nitrification water. A control system for a processing device. 15. The apparatus of claim 14,
Wherein the first reference value for the denitration treatment water and the second reference value for the nitrification treatment water are different from each other. 16. The apparatus of claim 15,
Wherein the control unit transmits the contaminated water to at least one denitrification tank among the plurality of denitrification / nitrification treatment vessels in accordance with the degree of contamination of the contaminated water stored in the flow rate adjusting tank. Flow regulator; And a plurality of denitrification / nitrification treatment tanks including a first-stage denitrification / nitrification treatment tank and a second-stage denitrification / nitrification treatment tank. And a wastewater treatment device according to any one of the preceding claims,
Measuring the contamination degree of the contaminated water stored in the flow rate adjusting tank;
Determining a denitrification tank to which the polluted water is to be sent from among the plurality of denitrification / nitrification treatment pools according to the measured contamination level;
Transmitting the contaminated water to the determined denitrifying tank;
Sensing ORP (Oxidation Reduction Potential) and MLSS (Mixed Liquer Suspended Solid) with respect to the denitrification water of the denitrification tank, and sensing ORP and MLSS with respect to the nitrification water of the nitrification tank;
Comparing the ORP value of the sensed denitrification water with a first reference value, comparing an ORP value of the sensed nitrification water with a second reference value;
As a result of the comparison, if the ORP value for the denitration treatment water is larger than the first reference value, the denitrification treatment water is transferred to another denitrification tank for re-denitration treatment of the denitrification treatment water, If the ORP value is larger than the second reference value, transferring the nitrified water to another nitrification tank for oxidizing the nitrified wastewater;
Measuring the amount of denitrification water stored in the other denitrification tank;
Confirming whether the amount of the measured denitration treatment water exceeds a reference amount;
Stopping the transmission of the denitration treatment water when the reference amount is exceeded;
Measuring the amount of nitrified water stored in the other nitrifying tank;
Confirming whether the measured amount of nitrified water exceeds a reference amount; And
Stopping the transfer of the nitrified water when the reference amount is exceeded;
And a control device for controlling the wastewater treatment device. delete delete delete

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