KR100941949B1 - Wastewater treatment system and method for reactor - Google Patents

Abstract

PURPOSE: An apparatus for processing sewage with an SBR method using a floating surface aeration device and a control method of reaction bath are provided to purify and discharge the sewage by installing a shield on an inflow pipe and an air vent. CONSTITUTION: An apparatus for processing sewage with an SBR method using a floating surface aeration device comprises an inflow manhole, an adulteration overall processor, a rotating vortex reaction bath(10), a ultraviolet ray sterilization bath, a flow meter and a sludge reservoir. The rotating vortex reaction bath comprises the following: a propeller housing(17) built on the bottom of the reaction bath; an aeration device(13) equipping a turbo propeller(150); a floater(11) supporting the aeration device; a gear shaft connected to a speed reduction motor(12); and a discharge device(14) with a scum shield and an air shield.

Description

Control method of sewage or wastewater treatment device and reaction tank of SBI method using floating surface aeration device {Wastewater Treatment System and method for reactor}

The present invention relates to a sewage or wastewater treatment apparatus and a control method of the reaction tank of the SBR method using a floating surface aeration device, and more preferably, by introducing the sewage or wastewater introduced into the treatment plant into a swirling vortex type SBR reactor. As a method of treating sewage or wastewater for treatment with a sequential batch reactor (SBR), a turbopropeller is mounted on a lower portion of a turbine of a conventional surface aeration apparatus and forced circulation of sludge including microorganisms in the bottom of the reaction vessel is performed to swirl the swirl in the reactor. In order to improve the efficiency of the sewage or wastewater, and install a scum barrier at the inlet of the discharge device for discharging the purified treatment water to block the inflow of suspended solids on the water surface when the discharge device is obtained. To prevent air from flowing back into the air vent installed to remove air from the inlet pipe In addition to the device to induce the siphon phenomenon in the discharge conduit to improve the discharge rate of the treated water to shorten the time required for the discharge process, conventionally measures only the dissolved oxygen concentration in the reaction tank to control the aeration device in the form corresponding to the value In addition to the behavior of the aeration system, the record of the change of dissolved oxygen and the microbial mass measurement, the predictive control is carried out to predict and purify the sewage or wastewater with a constant supply of oxygen into the reactor. will be.

Generally, sewage or wastewater treatment can be classified into chemical treatment such as chemical aggregation, physical treatment such as precipitation filtration, and biological treatment using microorganisms. Among them, biological treatment includes the standard activated sludge method which focuses on the removal of organic substance (BOD), and the advanced treatment method that removes the nutrients of the sewage waste water.

The sequential batch reactor (SBR) method of the advanced processing method is an organic material easily compared to other advanced processing methods (A20 series) by operating the state of aeration, aeration, sedimentation, and discharge in a single reactor through time control. It is also effective in the removal of nitrogen and phosphorus (BOD), and because of its simple operation technology, it is widely used in small and medium-sized sewage or wastewater treatment methods.

However, although the sequential batch reactor (SBR) method has many advantages compared to other advanced treatment methods, the blower chamber in the sewage treatment plant is used by using a blower and an acid pipe as a method of supplying oxygen to the reactor. There was a disadvantage that the facility investment, such as the structure and the complex air piping, a separate stirring device.

The conventional sequential batch reactor (SBR) has a disadvantage in that operating costs increase and are difficult to operate due to complicated operation methods and inefficient operation of mechanical equipment.

In addition, in the case of using a conventional surface aeration apparatus to supply oxygen to the reaction tank, when the depth of the reaction tank was deepened by supplying oxygen by contacting only the upper water of the reaction tank with air, a phenomenon occurred in which the sludge was deposited and destroyed at the bottom. . For these reasons, when using a conventional surface aeration device, it was difficult to efficiently use the site by designing a large surface area of the reaction tank.

In order to improve this problem, the present inventors invented the floating speed variable surface aeration device (swirl vortex turbine) on the surface of the reactor in the invention patent No. 0373745 to generate a swirling vortex throughout the reaction tank to reduce the low Overcoming the limitations of water depth, and improved oxygen supply capacity and hydrodynamic design to minimize the vibration transmitted to the surface aeration device in the event of eddy currents to improve the durability of the entire machine.

In addition, in the same invention patent No. 0373745, the air vent type discharge device for discharging the treated water purified in the reaction tank tried to minimize the inflow of the floating material by placing the floating material exclusion piece at the inlet of the treated water. By placing an air outlet at the inlet (curved pipe) of the inlet to facilitate the discharge of the air in the discharge pipe during the initial intake and to facilitate the transfer of the treated water.

However, the invention has been invented a swirling vortex turbine with superior technical differentiation compared to the existing surface aeration system, but it is an improvement to induce a more powerful swirling vortex generation to meet the latest design of wastewater treatment that requires a deeper water depth. There was a need for improvement. In addition, the air vent type discharge device has a problem that acts as a factor that inhibits the rapid discharge of the treated water is introduced into the air through the air outlet when the treated water is discharged through the discharge pipe.

In addition, various sensors, which have been variously applied to control dissolved oxygen in a conventional reaction tank, have complicated the operation of the whole sewage or wastewater treatment process, and operate the reactor using the values measured by various measuring devices. Direct application of such hazards frequently causes errors in the operation of sewage or wastewater treatment facilities due to errors in measuring equipment. In particular, by consistently controlling the oxygen supply device of the diffuser type or the surface aeration method in a manner such as ON / OFF in response to the dissolved oxygen measured value in the reaction tank, it is possible to obtain stable treated water quality due to the lack or excessive oxygen concentration in the reactor. There was a lot of difficulty.

In addition, the oversupply of oxygen concentration has a direct impact on operating costs due to excessive power use.

The present invention was created to improve and improve the disadvantages of the invention Patent No. 373745 as described above, and forced circulation of sludge containing microorganisms deposited on the bottom of the reactor even when the depth of the reactor for treating sewage or wastewater is deep By improving the organic decomposition mechanism of microorganisms, it is possible to easily transfer oxygen even to the bottom of the reaction tank, and achieve better oxygen transfer efficiency even when the depth of the reaction tank is low, so that the construction cost and maintenance cost of sewage or wastewater treatment facilities The aim is to achieve environmental benefits by simultaneously reducing costs, ensuring economic benefits and ensuring stable treatment water.

In addition, in addition to the air vent discharge device of the Patent No. 373745, by providing an air blocking membrane that can block the inflow of air through the scum (floating material) blocking film and the inlet pipe (curved pipe part), it is possible to secure a more excellent treated water and Through the discharge of the treated water is to reduce the time required for the sewage or wastewater treatment process to increase the process operation efficiency through time control.

In addition, the problem of complex and rudimentary morphology control method through dissolved oxygen measurement and various measuring devices is improved by introducing simple and practical predictive control technology through dissolved oxygen and reactor microbial mass measurement device (MLSS). The aim is to reduce management costs and to ensure stable discharge water quality by achieving convenience of maintenance and maintenance.

Referring to the configuration of the present invention for achieving the above object based on the accompanying drawings as follows.

The present invention, as shown in the drawings, when looking at its configuration, the inflow manhole (1) for receiving the sewage or waste water to be treated and transported to the next step of the composite waste treatment processor (4);

A comprehensive composite processor (4) for removing fine particles or non-corrosive inorganic substances and other suspended impurities contained in the sewage or wastewater transferred from the inflow manhole (1);

In order to purify the sewage or wastewater passed through the composite product processor (4), propeller housing (17) installed in the lower part of the reactor, forced rotation of them in the sewage or wastewater surface introduced into the inside to form a swirling vortex for oxygen transfer In order to perform the aeration process and the aeration process to stop the oxygen supply through the slow rotation and simply mixing the sewage or waste water, the shaft 121 of the gear connected to the reduction motor 12 and the flange 140 is connected to the turbine ( The turbo propeller 150 is mounted at the end of the rotating shaft 122 rotating through the inside of the aeration device 130 to circulate the sewage or wastewater, and the aeration device 13 is supported to float on the sewage or wastewater. Inside the inlet port 32 to block the scum flowing along the shaft 121 of the gear connected to the retarder motor 12 for driving the floater 11, the aeration device 13 and the purified treated water. The discharge device 14 provided with the scum cut film 320 and the air cut film 330 installed to block the inflow of external air when the treated water is discharged through the discharge conduit 18 in the inside of the air vent 33. A swirling vortex reactor 10 configured to include;

An ultraviolet disinfection tank and a flow meter 19 for disinfecting the treated water purified by the swirling vortex reactor 10 and measuring a capacity;

It provides a sewage or wastewater treatment apparatus of the SBR method using a floating surface aeration device, characterized in that it comprises a sludge storage tank 24 for receiving the sludge discharged from the lower portion of the reaction tank 10 to treat it.

In addition, the present invention is to install a propeller housing 17 in the lower part of the reaction tank 10 for the purification of sewage or wastewater containing various pollutants such as organic matter and nutrients, and to rapidly rotate them on the surface of the sewage or wastewater by turning The shaft of the gear penetrates through the inside of the shaft 121, the turbine 130, and the turbine 130 connected to the reduction motor 12 to perform the aeration process and the slow aeration mixing process to form the vortex. 121 and the turbo propeller 150 is mounted to the end of the rotating shaft 122 connected by the flange 140 to circulate the sewage or waste water in the aeration device 13, the aeration device 13 is a plotter on the sewage or waste water (11) provides an SBR sewage or wastewater treatment apparatus, which is configured to be suspended and supported.

In addition, the present invention is configured by connecting the shaft 121 of the gear connected to the reduction motor 12 for rotating the turbine 130 penetrating through the interior of the turbine 130 to mount the turbo propeller 150 at the end. It provides a sewage or wastewater treatment apparatus by the SBR method.

In addition, the present invention is the blade of the turbo propeller 150 by the SBR method characterized in that it has at least one rotation guide blade so that the rising flow in the insertion port 171 inside the propeller housing 17 during rotation. Provide sewage or wastewater treatment devices.

In addition, the present invention provides a sewage or wastewater treatment apparatus according to the SBR method characterized in that the turbopropeller 150 is connected to the end of the turbine 130 is embossed on the surface.

In addition, the present invention is characterized in that the propeller housing 17, which is installed in the lower part of the reaction tank is configured so that the turbo propeller 150 is inserted into the center around the vertex to circulate and mix the sludge containing the microorganisms of the bottom to the top. It provides a sewage or wastewater treatment apparatus by the SBR method.

In addition, the present invention provides a sewage or wastewater treatment apparatus by the SBR method characterized in that the propeller housing 17 has a circular or biangular or more rectangular structure.

In addition, the present invention is attached to the scum blocking membrane 320 inside the inlet 32 for discharging the treated water after purifying the sewage or wastewater contaminated in the sewage or wastewater treatment apparatus, the reverse inflow to prevent the reverse flow of air It provides a sewage or wastewater treatment apparatus by the SBR method characterized in that it further comprises a discharge device 14 formed with a one-way air vent (33) having an air blocking film (330).

In addition, the present invention provides the sewage or wastewater treatment apparatus by the SBR method, characterized in that the scum blocking film 320 is fixed to one end surface or the center portion to the inner side of the inlet 32.

In addition, the present invention is a measuring unit for measuring the amount of dissolved oxygen and microorganisms in the reaction tank for the purification of sewage or wastewater containing various pollutants such as organic matter and nutrients, and an input unit for inputting the value measured in the measurement unit, input It provides a control method of the reactor by the SBR method, characterized in that the operation unit for calculating the value, the output unit for outputting the operation value from the operation unit and the aeration device driver to control the operation of the reactor.

In addition, the control unit calculates the input dissolved oxygen value to calculate the operation speed change time and speed of the aeration device, and re-enter the dissolved oxygen value according to the change in the speed of the aeration device, this aeration device 13 again The basic calculation unit repeats the process of calculating the time and speed of the change of speed, and calculates the microbial mass, the output aeration device speed, the dissolved oxygen change rate, and the DO value (dissolved oxygen value) recorded in the previous cycle. It provides a control method of the reactor by the SBR method characterized by consisting of a predictive control process consisting of a predictive calculation unit for calculating the operation speed of the aeration device.

In addition, the present invention is the output unit is composed of a basic output unit and the prediction control output unit, the basic output unit transfers the value calculated from the basic operation unit to the abandon device, the prediction control output unit to the abandon device It provides a control method of the reactor by the SBR method characterized in that by estimating and controlling the operating speed of the aeration device and the timing of the acceleration and decrease of the operation speed by transmitting.

In addition, the present invention controls the operation of the aeration device by using the speed change time and the set speed calculated by the operation unit, the abandonment, aeration, precipitation, discharge, It provides a control method of the reaction tank by the SBR method characterized in that the time control of the rest process.

The present invention by the configuration as described above to minimize the adhesion of contaminants by forming an embossed on the surface of the end by extending the axis of the gear connected to the reduction motor to rotate the swirling vortex turbine when the sewage or waste water purification treatment in the reaction tank Turbopropeller designed to generate strong upflow and propeller housing installed by analyzing the flow of fluid is a swirling vortex that circulates the microorganisms and sludge in the bottom with more powerful swirling vortex, resulting in complete mixing of the reactor and high oxygen By achieving the transfer efficiency is effective to maximize the treatment efficiency of excellent sewage or waste water.

In addition, the present invention discharges the treated water of the improved quality by completely blocking the inflow of foreign substances such as scum on the water surface by the scum blocking film installed in the inlet of the discharge device when discharged the treated water purified in the reaction tank through the discharge device By installing an air inlet barrier in the air vent function of simply discharging the air of the exhaust conduit in the related art, it is possible to prevent the lowering of the discharge rate due to the inflow of external air and to make the cyphon action perfectly. There is an effect to obtain an improved treatment water discharge rate.

In addition, the present invention calculates the operating speed and the dissolved oxygen concentration change trend of the improved and improved swirling vortex turbine by inputting the dissolved oxygen concentration measured by the measuring unit in the reactor to control the increase and decrease timing and the operating speed of the rotational speed and record the previous record. By further predicting by using, it is possible to improve the removal rate of organic matter and nutrients contained in sewage or wastewater and to prevent overdown electricity, thereby reducing maintenance costs such as power costs.

Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

The apparatus for treating sewage or wastewater of the present invention is a surface aeration type continuous batch (SBR), which operates the state of aeration, aeration, sedimentation, and discharge in a single reactor 10 by controlling the biological oxidation of organic matter and nitrogen and phosphorus by controlling the time. Simultaneous removal occurs.

A specific example of the apparatus according to the present invention is shown in FIG. 1 and will be described with reference to this.

First, the sewage or wastewater to be treated is introduced into the inflow manhole (1) and the introduced sewage or wastewater through the transfer pipe (3) according to the operation of the transfer pump (2) in the inflow manhole (1) Is transferred to.

In the contaminant comprehensive processor 4, non-corrosive inorganic substances such as fine particles or sand contained in the inflowed sewage or waste water and other suspended contaminants are removed in advance through a classifier to protect pumps or pipes that are subsequently passed through.

The sewage or wastewater from which the contaminants are removed from the contaminant synthesis processor 4 is transferred to the swirling vortex-SBR reactor 10, and when a flow rate greater than the designed quantity is introduced, it is arbitrarily installed at the lower side of the contaminant synthesis processor 4. It is transported to an off-line type flow regulating tank 8, which prevents degradation of treatment efficiency due to fluctuations in the flow rate of the sewage or wastewater and water quality.

In the flow rate adjusting tank 8, an agitator 9 and a transfer pump 7 may be installed to prevent sediment from settling on the bottom.

The sewage or wastewater having passed through the flow rate adjusting tank 8 is transferred to the reaction tank 10.

However, in the example of the illustrated device, the sewage or wastewater from the contaminant synthesis processor 4 flows into the reaction tank 10 through the flow regulating tank 8, but the flow regulating tank 8 is not essential as any device. will be.

The reactor 10 is a propeller housing 17 installed at the bottom, aeration process to form a swirling vortex to force the oxygen to be delivered by rapid rotation of them in the surface of sewage or wastewater introduced into the inside, and supply of oxygen by slow rotation Aeration device 13 for stopping and simply mixing, a floater 11 for floating support of the aeration device 13 on sewage or wastewater, and a reduction motor for driving the aeration device 13. And a turbo propeller 150 installed at the lower portion of the shaft 121 and the rotating shaft 122 connected to the gear 12, and a discharge device 14 for discharging the treated sewage or wastewater.

As shown in FIG. 3, the shaft 122 connected to the shaft 121 of the gear connected to the reduction motor 12 for supplying oxygen by driving the turbine 130 of the aeration device 13 and the rotation shaft 122 are connected to each other. Turbo propeller 150 is attached to the end of the). In addition, as shown in FIG. 4, the propeller housing 17 has an insertion hole 171 formed at an inner side of the intersection so that the turbo propeller 150 can rotate at the bottom thereof, and is gathered into the housing 17. Sludge containing microorganisms in sewage or wastewater is circulated and mixed upwards. At this time, the propeller housing 17 is formed to have a circular or triangular or more rectangular structure.

In addition, as shown in FIG. 5A, a scum blocking film 320 is formed at the inlet 32 of the discharge device 14 to prevent scum from being introduced into and discharged therein, and as shown in FIG. 5B, the reactor 10. ) When the treated water is discharged to the discharge conduit 18 also inside the air vent 33 for introducing air to discharge the treated water purified in the exhaust pipe 18 to the discharge conduit 18, through the air vent 33. The air barrier 330 is installed to prevent the inflow.

As such, in the reaction tank 10, the aeration device 13 rotating in a floating state on the influent surface performs aeration and aeration, and at the time of aeration, the aeration device 13 is formed of a gear connected to the reduction motor 12. Turbine 130 received power by the shaft 121 is rotated with a suitable rotational force, the swirling vortex is formed by the rotational force is supplied to the oxygen uniformly with high transfer efficiency in the reaction tank 10 to remove the organic matter, as well as And nitrification and excess intake of phosphorus by microorganisms. After aeration, the aeration device 13 reduces the rotational force, stops oxygen transmission and performs aerobic mixing in anoxic state, thereby inducing biological denitrification and preventing sludge containing microorganisms from settling.

And the turbo propeller 150 is rotated by the rotation shaft 122 connected to the shaft 121 of the gear connected to the reduction motor 12 by the flange 140 to the upper sludge deposited on the bottom portion of the reaction tank 10 to the top. Forced circulation improves organic decomposition efficiency by increasing contact between microorganisms and organic materials through perfect mixing.

At this time, the propeller housing 17 installed on the bottom of the reaction tank 10 operates as a induction pipe that circulates sludge containing microorganisms that are not circulated smoothly by being deposited on the bottom during circulation of sewage or wastewater in the reaction tank 10. When the turbo flopler 150 is located inside the housing 17 to increase the sludge circulation efficiency of the bottom portion.

That is, due to the turbo propeller 150 installed on the lower end of the rotating shaft 122 to accelerate the ascending circulation of sewage or waste water to make the circulation efficiently. By increasing the acceleration force of the upward flow, by deepening the depth of the reaction tank 10, which has limitations in the existing surface aeration device, it is possible to effectively reduce the construction cost and maintenance cost by forming an efficient swirling vortex using the same power as the site saving. have.

As described above, the main reactor 10 efficiently removes nitrogen and phosphorus components as well as organic substances contained in sewage or wastewater.

The reactor 10 can be appropriately adjusted according to the scale of the treatment, and the arrangement of the reactor 10 and the discharge device 14 for discharging the treated sewage or wastewater will be described later.

The treated water purified through the reaction tank (orbital vortex type SBR reaction tank) 10 is discharged after disinfection and flow measurement at the disinfection tank and the flow meter 19 by the discharge device 14 as a supernatant through the discharge conduit 18. On the other hand, sludge containing microorganisms deposited on the bottom of the reaction tank 10 is sent to the sludge storage tank 24 through the transfer pipe 16 and stored, which is concentrated in the mechanical concentrator 28 and then in the centrifugal dehydrator 30 It can be dehydrated and treated as cake.

FIG. 6 is a side view of the discharge device 14 installed in the reaction tank 10 of the present invention to discharge the treated water purified from the reaction tank, respectively. The winch 38 installed at one upper side of the reaction tank 10 and capable of low speed operation is shown in FIG. It is connected by the winch 38 and the support rope 37 and is movable up and down and is bent at 60 to 90 degrees so that the treated water is discharged only when fully locked, and the inlet 32 and the float at the end thereof do not flow in the upper part. Discharge device 14, in which exclusion piece 34 is installed, is installed at one lower end of main reactor 10 at the lower part of winch 38, and twist link 35 for discharging device 14 is capable of pivoting up and down. ) And a twisted link support (36) for supporting the twisted link (35) on the wall of the main reactor (10).

In this case, as shown in FIG. 5A to prevent secondary flow of scum that is not excluded by the floating material exclusion piece 34 installed in the inlet 32, a scum blocking film 320 is installed inside the inlet 32. have.

As described above, the inlet 32 is provided with a double layer exclusion piece 34 and a blocking membrane to prevent the inflow and discharge of the float, and removes air near the end of the inlet 32 of the discharge device 14 An air vent 33 for discharging the treated water is provided. In this case, too, as shown in FIG. 5B, when the treated water is discharged through the discharge conduit 18, an air barrier 330 is installed to prevent external air from entering the discharge conduit 18 through the air vent 33. have.

In this way, the scum cut-off membrane 320 installed in the inlet 32 of the discharge device 14 is always closed in the air pressure state exposed to the air, but the inlet 32 of the discharge device 14 has been submerged below 30 cm below the water surface. In this case, it is opened by water pressure, and can effectively block scum that is introduced during initial acquisition.

In addition, the air barrier membrane 330 installed in the air vent 33 is always closed in the state of being exposed to air, and then discharged automatically, and is automatically closed by suction force generated when the treated water moves through the discharge conduit 18. Effectively eliminating the obstacles that slow down the discharge rate of the treated water generated can reduce the discharge time.

And by installing the scum blocking film 320 installed in the inlet 32 of the discharge device 14 and the air blocking film 330 installed in the air vent 33, the inflow of scum almost completely blocks the discharge conduit ( 18) clean treated water is discharged.

By the discharge device 14 configured as described above, the treated water in the reaction tank 10 is discharged only clear treated water excluding the suspended matter suspended in the upper layer. In addition, the discharge device 14 is preferably made of stainless steel for the antirust effect.

And the method of controlling the amount of oxygen supplied into the reaction tank 10 is, as shown in Figs. 2 and 7, when the dissolved oxygen in the reaction tank 10 is measured by the measuring unit 200, dissolved oxygen in the reaction tank 10 In order to minimize the deviation between the target value and the actual value, the calculation unit 210 calculates the control value based on the change in the measured value, and inputs the output value and the dissolved oxygen measurement value, so that the controller 220 controls the oxygen supply. do.

ERR = SP (target value)-PV (current value)

The control unit 220 used here can maintain the concentration of dissolved oxygen suitable for sewage or wastewater treatment by configuring the proportional, integral, and derivative.

In addition, the prediction controller 230 stores the behavior of dissolved oxygen DO recorded during the operation of the cycle before the process in consideration of the characteristics of the batch processing that controls the process through temporal classification, and applies the same to the prediction controller 230. To prevent excessive and prolonged response of the aeration device 13 to maintain the most suitable operating conditions for advanced processing.

In addition, the amount of oxygen consumed can be predicted by applying the measured value of the conventional MLSS measuring instrument to the input prediction controller 230 as an operation factor.

MLSS is an important means of predicting the number of microorganisms in the reactor (10), it is possible to increase the efficiency by correcting the output value in operation and the experimental value in the laboratory.

More specifically, as shown in the following diagram, the predictive controller 230 stores the record of the past DO and the output value of the abandonment device 13 to predictively control the current output value.

<Previous DO Change Rate>

<DO Change Rate after Predictive Control>

When the record that was excessive or prolonged in the previous cycle is newly processed, it is used as feedback data to estimate the degree of DO consumption and to adjust the driving speed of the aeration device 13 in advance, and to use the previous record when changing to another process. You can respond more accurately and quickly than by using only measurement data.

In other words, if the DO is controlled only through the basic operation, the deviation from the target value becomes severe due to excessive or prolonged response to the target value, but the deviation can be reduced in consideration of the previous record. Therefore, it is possible to maintain DO stably by accumulating data.

As such, the oxygen supply control method in the reactor 10 is not limited to the aeration device 13 proportional to the dissolved oxygen value, but is efficiently controlled in a single reactor 10 by efficiently controlling the continuous batch sewage or wastewater. Through the aeration, aeration, sedimentation, and discharge process consisting of a stable treatment water quality of sewage or waste water can be provided and the convenience of maintenance.

9, the DO sensor or the MLSS sensor, which is the measuring unit 240 installed in the reaction vessel 10, measures the state inside the reaction vessel 10 to measure the DO value and the MLSS. Pass the value to DO input, DO storage, and MLSS storage respectively. The values transmitted to each input unit are calculated by the prediction operation unit and transferred to the prediction control output unit to output the prediction value by recognizing the feedback data before output, and the basic operation value received from the basic input unit is the default value at the basic output unit. It outputs and drives the aeration device to repeat the process of supplying dissolved oxygen to the reactor.

As such, batch advanced processing controls the continuous processing process through time division within a space. The composition of the process is very important and is divided into five stages: aeration, aeration, sedimentation, discharge, and rest.

At this time, the conventional control method had the disadvantage of deteriorating the water quality during load fluctuation and variable generation by controlling the operation of the aeration device at a predetermined time for each process.However, the predictive control program processes the process by comprehensively controlling the previous record and the current I / O value. It can respond more effectively to load fluctuations such as automatic change of time.

The control elements include the flow control level, the reaction tank level, the target DO reach time during the aeration process, the DO consumption during the aeration process, and use the actual process data as a control element without adding additional measuring devices. It can be completed effectively.

At this time, the prediction controller composes a program that can additionally input actual values by correcting measured values such as dissolved oxygen and MLSS.

By adding this predictive control unit, it is possible to improve the stable processing efficiency and reduce the maintenance cost and the simple maintenance by the energy saving and automation.

1 is a sewage or wastewater treatment apparatus used in the method of the present invention

2 is a cross-sectional view showing a reaction tank of the present invention.

Figure 3 is a front view of the abandoned device and the drive unit of the present invention
4 is a cross-sectional view of the propeller housing of the present invention.

delete

Figure 4a is a state in which the present invention the propeller is inserted into the propeller housing
5a and 5b is a cross-sectional view showing the inlet and air vent of the discharge device of the present invention

Figure 6 is a side view showing a discharge device of the present invention

7 is a block diagram showing operation of the predictive control unit of the present invention.

* Explanation of symbols on the main parts of the drawings

1: inlet manhole 2: transfer pump

3,5,6,7: Transfer pipe 4: Complex processing equipment

8: flow rate adjusting tank 9: stirrer

10 Reactor 11 Floater

12: reduction motor 13: aeration device

14 discharge device 16 sludge feed pipe

17 propeller housing 18 treated water discharge conduit

19: disinfection tank and flow meter 24: sludge storage tank

28: concentrator 30: centrifugal dehydrator

32: inlet 33: air vent

34: floating material exclusion 35: twisted link

36: support 37: support rope

38: winch 121: shaft of reduction gear

122: rotating shaft 130: turbine
140: flange 150: turbo propeller

171: insertion hole 320: scum blocking film
330. Air barriers

Claims (12)

      In the sewage or wastewater treatment apparatus according to the SBR method, a propeller housing 17 is provided at a lower portion of the reaction tank 10 for purifying sewage or wastewater containing various contaminants such as organic matter and nutrients, and the turbine 130. And a reduction geared motor 12 and a shaft 121 of a gear, and abandoning step of rapidly rotating them on the surface of sewage or wastewater to form a swirling vortex and floating variable surface giving up a slow rotation to perform aerobic mixing process. The turbo propeller 150 is installed at the end of the rotating shaft 122 which installs the apparatus 13 and penetrates the inside of the turbine 130 by the shaft 121 of the gear and the flange 140. The propeller 150 has one or more rotation guide vanes, and is inserted into the propeller housing 17 around the vertex so that upward flow may occur in the insertion hole 171 inside the propeller housing 17 during rotation. So Sewage or wastewater treatment apparatus according to the SBR method characterized in that the waste water or waste water is circulated in the aeration device (13), and the aeration device (13) is supported to float to the plotter (11) on the sewage or wastewater. delete delete The method of claim 1, The turbo propeller 150 is a sewage or wastewater treatment apparatus according to the SBR method characterized in that the embossed on the surface. delete The method of claim 1, The propeller housing 17 is a sewage or wastewater treatment apparatus according to the SBR method characterized in that it has a circular or triangular or more rectangular structure. Further comprising a discharge device 14 for discharging the treated water after purifying the waste water in the sewage or wastewater treatment apparatus according to the SBR method of claim 1, wherein the discharge device 14 is a floating material exclusion piece 34 at its end While the installation is attached to the scum blocking film 320 inside the inlet 32, the one-way air vent 33 having a reverse inlet air blocking membrane 330 to prevent the back flow of air to the air outlet of the inlet (curve pipe) Sewage or wastewater treatment apparatus according to the SBR method characterized in that formed .. The method of claim 7, wherein The scum blocking membrane is sewage or wastewater treatment apparatus according to the SBR method, characterized in that one end or the center portion is fixed to the inner side of the inlet. delete delete delete delete

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