KR101485500B1 - Device and method by the membrane separator activated advanced oxidation process - Google Patents

Abstract

The present invention relates to an apparatus and a method for recycling wastewater treatment combined with continuous batch and membrane separation, and more particularly, to a separation membrane system for filtration by an external pressure type filtration system and a method for minimizing contamination of a separation membrane unit The present invention relates to an apparatus and a method for reuse of wastewater treatment combined with a continuous batch method and a membrane separation method.
In order to accomplish the above object, the present invention provides a recycling apparatus for a wastewater treatment system, which comprises a batch regulator, a batch reactor, and a membrane separator,
A flow regulating tank into which sewage is introduced; Reaction to the incoming wastewater, and a stirred tank; A water level meter for transmitting level measurement information measured by dividing the amount of wastewater flowing into the flow rate adjusting tank to a predetermined level, to the controller; A control unit for controlling the transfer to the batch type reaction tank at a constant rate according to the amount of the introduced sewage; A vortex generating device installed at either a predetermined position on an extended line with the underwater stirring device or on either of two surfaces of the batch reaction tank wall; A contact material for facilitating microbial culture in the batch reactor; A distribution pipe installed on the upstream side of the inflow pipe of the batch type reaction tank; A membrane separation tank connected to the batch type reaction tank and subjected to solid-liquid separation to produce or return the treated water to the inside; A plurality of separation membrane units immersed in the membrane separation vessel and being solid-liquid separated while the mixture outside the separation membrane unit flows into the separation membrane unit through the separation membrane unit gap by the suction pressure generated by the operation of the suction pump existing outside the membrane separation vessel; A suction pump provided outside the membrane separation tank to generate a suction force; A plurality of separation membrane suction lines installed between the suction pumps and provided with a differential pressure meter for sensing the permeation pressure of the separation membrane unit and a suction valve for interrupting the inflow of the process water; A discharge tank which receives the treated water sucked by the suction pump and discharges the treated water to the outside; A blower installed outside the membrane separation tank to supply air to the batch type reaction tank for delaying occlusion and prolongation of operation time occurring on the surface of the separation membrane unit; A biological nitrogen-phosphorus removal process for removing organic matter and nutrients, and a biological nitrogen-phosphorus removal process for removing organic matter and nutrients, comprising a ventilator connected to the blower through an air line, Combination of the membrane filtration process and the internal inflow method to prevent the effluent of the activated sludge in the final treated water can minimize the contamination phenomenon of the separation membrane unit which can be formed in the MBR process.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device and a method for recycling wastewater treatment combined with continuous batch and membrane separation,

The present invention relates to an apparatus and a method for recycling wastewater treatment combined with continuous batch and membrane separation, and more particularly, to a separation membrane system for filtration by an external pressure type filtration system and a method for minimizing contamination of a separation membrane unit The present invention relates to an apparatus and a method for reuse of wastewater treatment combined with a continuous batch method and a membrane separation method.

As a conventional process for advanced wastewater treatment, the biological treatment process can be classified into various methods according to the structure and operation method of the reaction tank; A mainstream process in which anaerobic, anaerobic and aerobic basins are connected in series such as anaerobic / oxic, anaerobic / anoxic / oxic, UCT and Bardenpho, and Phostrip , PL-, and the like, and side stream processes in which anaerobic degumming is connected in parallel.

Also, it can be classified into a spatial arrangement type in which the phase of the reaction vessel is fixed and a time arrangement type process in which the phase of the reaction vessel changes with time.

Although the various processes described above have frequently caused problems such as sludge expansion, micro flocs and sludge floatation in the subsequent gravitational settling tank due to changes in temperature or operating conditions, the problem of deteriorating the treated water quality has been revealed do. In addition, since the gravitational sedimentation method used in the conventional process is difficult to maintain the concentration of the microorganisms in the reaction tank at a certain level or higher, the ability to cope with high load is inferior and the hydraulic retention time has to be kept relatively long . Thus, a membrane-bound biological treatment method combining a membrane filtration method capable of achieving stable solid-liquid separation using a separation membrane unit instead of solid / liquid separation by gravity sedimentation has emerged.

On the other hand, Korean Patent No. 1022403 discloses an apparatus for preventing clogging of a membrane separation apparatus for advanced treatment, which is an anoxic tank in which denitrification is caused by microorganisms and is converted into nitrogen gas by converting nitrate nitrogen into mixed gas of raw water and existing liquid in the reaction tank, An aerobic tank for nitrifying nitrogen and nitrite nitrogen in the mixed liquor introduced from the tank and removing phosphorus and phosphorous components and a separation membrane unit installed in the aerobic tank for selectively filtering sewage and wastewater according to the particle size, The problem of contamination of the separation membrane unit becomes serious due to the separation membrane unit, and there arises a problem of an increase in the area of the ownership site due to the continuous connection of the existing vessels such as the flow rate control tank, the anoxic tank and the oxic tank.

In particular, as shown in FIG. 1, Korean Patent No. 1395188 discloses a wastewater treatment apparatus provided with a separation membrane module, which includes a screen 10 for filtering contaminants or suspended substances in wastewater flowing through an inlet pipe 10 ' An anaerobic tank 200 'provided with an underwater agitator 900' for removing phosphorus from the treated water which is connected to the screen tank 100 'and processed in the screen tank 100' An anoxic tank 300 'connected to the anaerobic tank 200' for denitrification of the treated water transferred from the anaerobic tank 200 'and connected to the anoxic tank 300' having an underwater stirrer 900 ' An MBR tank 400 'provided with a separation membrane module 700' for removing residual organic matter from the treated water flowing in the anoxic tank 300 'and solid-liquid-separating water and sludge, an MBR tank 400' connected to the MBR tank 400 ' An SDR tank 500 'for performing the sulfur denitrification reaction of the treated water flowing in the tank 400', and an SDR tank 500 ' And a discharge pipe 20 'for discharging the filtered treated water.

That is, a plurality of treatment tanks such as the screen tank 100 ', the anaerobic tank 200', the anoxic tank 300 ', the MBR tank 400' and the SDR tank 500 ' There is a problem that the utility is very poor.

Therefore, there is a need to develop a new system that minimizes the contamination of the separation membrane unit and minimizes the increase in the area of the ownership area due to the continuous connection of the existing vessels.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a simple three-stage flow regulator, a batch reactor, and a membrane separator, The filtration is performed by an external pressure membrane filtration method and then recycled to the batch type reaction tank for internal transfer to maximize the treatment of organic substances and nutrients to minimize excess sludge so that the replacement cycle of the separation membrane unit becomes longer, The purpose is to extend the life span.

It is also an object of the present invention to provide an apparatus and a method for controlling sewage, sewage, and wastewater in a simple form consisting of a flow rate adjusting tank into which wastewater flows, a batch reactor and a membrane separator, It is aimed to minimize the area of the ownership area by reducing the dividing compartments compared to the existing MBR process.

In order to achieve the above object, the present invention provides a recycling apparatus for a wastewater treatment system in which continuous batch and membrane separation are combined, the apparatus comprising: Reaction to the incoming wastewater, and a stirred tank; A water level meter for transmitting level measurement information measured by dividing the amount of wastewater flowing into the flow rate adjusting tank to a predetermined level, to the controller; A control unit for controlling the transfer to the batch type reaction tank at a constant rate according to the amount of the introduced sewage; A vortex generator installed at an arbitrary position on an extended line or on an underwater agitator and diagonally on either side of the batch reactor wall; A contact material for facilitating microbial culture in the batch reactor; A distribution pipe installed on the upstream side of the inflow pipe of the batch type reaction tank; A membrane separation tank connected to the batch type reaction tank for solid-liquid separation to produce treated water or convey excess sludge; A plurality of separation membrane units immersed in the membrane separation vessel and being solid-liquid separated while the mixture outside the separation membrane unit flows into the separation membrane unit through the separation membrane unit gap by the suction pressure generated by the operation of the suction pump existing outside the membrane separation vessel; A suction pump provided outside the membrane separation tank to generate a suction force; A plurality of separation membrane suction lines installed between the suction pumps and provided with a differential pressure meter for sensing the permeation pressure of the separation membrane unit and a suction valve for interrupting the inflow of the process water; A discharge tank which receives the treated water sucked by the suction pump and discharges the treated water to the outside; A blower installed outside the membrane separation tank to supply air to the batch type reaction tank for delaying occlusion and prolongation of operation time occurring on the surface of the separation membrane unit; And an air diffuser connected to the blower through an air line to receive air from the blower and supply the air to the inside of the membrane separation unit.

Further, according to the present invention, when the flow rate adjusting tank determines that the batch reactor tank can not proceed with the normal process due to the inflowing water amount is low according to the level measurement information, the intermittently operating first The load mode is activated and the high load mode is activated on the basis of the excess amount of the wastewater inflow amount according to the level measurement information to shorten the inflow time by operating the first and second inflow reserve pumps, Two blowers are simultaneously operated.

In addition, the present invention is characterized in that the batch reaction tank distributes the influent water transfer pipe to the front end of an underwater agitator of the batch reaction tank to increase the initial stirring rate and induce secondary denitrification by utilizing the organic carbon source of the influent raw water.

The separator unit may be a submerged or external pressure separator unit having a nominal pore size of 0.001 to 0.4 mu m. The membrane may be in the form of a hollow fibular, tubular or flat membrane. And the like.

In order to prevent the reduction of the efficiency of the initial denitrification process due to the inflow of oxygen when the bubbles are generated due to the dropping, the present invention is characterized in that the feed pipe is bent in a " So as to reduce the head drop.

The present invention also relates to a method for reuse of wastewater treatment combined with continuous batch and membrane separation comprising a flow rate adjustment tank, a batch type reaction tank and a membrane separation tank, wherein the level measurement information is obtained by dividing the amount of wastewater introduced from the flow rate adjustment tank into a predetermined level An inflow step of operating the inlet preliminary pump and introducing it into a batch type reaction tank for treating wastewater; A reaction step of operating the first blower and the second blower to increase the reaction time when the concentration of the wastewater in the batch type reaction tank is equal to or more than a predetermined value, and adjusting the amount of the aeration according to the concentration of the wastewater through the air diffuser; Stirring the wastewater by means of an underwater agitating device in the batch type reaction tank, a vortex generating device on a wall surface, and a distribution pipe provided on the upstream side of the influent pipe; Transferring the microbial mixed solution having undergone the biological treatment process to a membrane separation tank for aerobic treatment, and solid-liquid separation through a separation membrane unit to produce treated water; Recycling the nitrified activated sludge that has not been discharged by the separation membrane unit to the recycled reaction tank through internal transportation; And a discharging step of discharging the supernatant separated in the solid-liquid separation step to the treated water tank.

In the inflow step, when it is determined that the amount of inflow water is low according to the level measurement information and the batch reactor can not proceed with the normal process, the first and second blowers are intermittently operated A low load mode step; And a high load mode step for shortening the inflow time and simultaneously operating the first and second blowers by operating the first and second inflow reserve pumps on the basis of the high flow rate of the wastewater inflow amount according to the level measurement information .

The present invention minimizes the microbial concentration (MLSS) of the mixed microorganisms flowing into the membrane filtration process by introducing the batch-type reactor process before the separation membrane process, and the batch-type reaction tank performs the biological nitrogen-phosphorus removal process By maximizing the treatment of organic substances and nutrients, it is possible to minimize the contamination of the separation membrane unit, which may occur in the MBR process, thereby extending the lifetime of the separation membrane unit and prolonging the replacement cycle.

According to the present invention, it is possible to carry out an advanced treatment of sewage, sewage and wastewater in a simple form consisting of a flow rate adjusting tank into which wastewater flows, a batch type reaction tank in which reaction is performed with respect to the introduced wastewater, Therefore, it is possible to minimize the area occupied by the existing MBR process.

Further, according to the present invention, the operation mode of the batch type reactor is automatically controlled according to the inflow amount of the wastewater by performing the advanced treatment apparatus of the batch activated sludge process, and stable operation efficiency is maintained according to the batch type reactor control system .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual illustration of a membrane-separation elevation treatment apparatus according to the prior art.
FIG. 2 is a view showing a concept of a recycling apparatus for wastewater treatment combined with continuous batch and membrane separation according to an embodiment of the present invention.
FIG. 3 is a detailed view illustrating a recycling apparatus for wastewater treatment combined with continuous batch and membrane separation according to an embodiment of the present invention.
FIG. 4 is a view showing the distribution pipe or the like of FIG. 3 in detail.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

FIG. 2 is a view showing a concept of a recycling apparatus for wastewater treatment combined with continuous batch and membrane separation according to an embodiment of the present invention.

As shown in FIG. 2, the present invention includes a flow rate control tank 100 into which a wastewater flows, three batches including a reaction tank 200 in which reaction with the introduced wastewater, stirring is performed, and a membrane separation tank 300 The contamination of the separation membrane unit 301 can be minimized by performing a stable elevation treatment and reprocessing the excess sludge from the separation membrane bath 200 by recirculation in accordance with the conveyance.

The flow rate adjusting tank 100 includes inlet preliminary pumps 101 and 102 for shortening the time for supplying wastewater to the batch type reaction tank 200 and a water level meter capable of measuring the inflow amount of the raw water.

Specifically, the flow rate adjusting tank 100 is an automatically controlled device for measuring the inflow amount in the inflow step and improving the processing efficiency according to the inflow amount of the batch type reaction tank 200, and includes a water level meter (A, B, and C) are installed, and can be classified into a low water level (C water level), a heavy water level (B water level), and a high water level (A water level) depending on the amount of wastewater inflow.

 Here, when the amount of sewage in the flow control tank 100 is measured at the low water level (C), there is no inflow into the batch reactor 200, and the blowers 203 and 204 in the batch reactor are operated automatically intermittently to prevent microorganisms' do. On the other hand, at the middle water level B, the normal load mode is operated to perform normal treatment by filling the wastewater to the middle level of the batch reactor 200. When measured at the high water level A, the inlet preliminary pumps 101, 102) are simultaneously operated. In order to increase the treatment efficiency of the batch type reaction tank, the preliminary blower operates, and the normal treated water can be stably discharged to the load fluctuation depending on the inflow amount. All this process is done by automatic control system.

 The batch type reaction tank 200 includes reaction tank pumps 201 and 202, first and second blowers 203 and 204, underwater stirring devices 205 and 206, a diffuser 207, a distribution pipe 227, a vortex generator 228, , And a control unit (not shown), thereby maximizing the initial agitation effect and inducing the secondary denitrification utilizing the organic carbon source of the influent source water, thereby efficiently performing the nitrogen removal.

When the wastewater flows into the flow regulating tank 100 at a high water level (A), the batch reaction tank 200 operates in a high load mode. That is, as the inflow step, the inflow reserve pumps 101 and 102 are operated and the underwater agitation apparatuses 205 and 206 operate in order to shorten the time for supplying wastewater from the flow rate adjusting tank 100 to the batch type reaction tank 200. The operation time of the inlet reservoir pumps 101 and 102 is controlled to be shorter than the operation time of the inlet reservoir pumps 101 and 102 in the basic mode through a control unit (not shown).

In the low load mode, the first and second blowers 203 and 204 are operated intermittently when the wastewater inflow amount of the flow rate adjusting tank 100 is small, Air is supplied to the reaction tank 200 intermittently. This prevents the microorganisms in the batch reactor 200 from being subjected to auto-oxidation even if substantial water treatment is not performed.

3, the underwater agitators 205 and 206 are installed diagonally inside the batch reactor 200. The vortex generator 228 is connected to the underwater agitators 205 and 206, Or the wall surface of the batch type reaction tank 200, and are sequentially operated in the wastewater inflow step and the stirring step in the treatment process.

In the stirring step, underwater stirring devices 205 and 206 are used, and the underwater stirring devices 205 and 206 can be installed diagonally inside the batch type reaction tank 200

The wastewater in the batch type reaction tank can be mixed in a short time when operated, and it can be operated in accordance with a predetermined program by a system control unit (not shown), so that a plurality of underwater stirring devices 205, The processing efficiency can be further increased by the program.

In addition, the operation of the underwater agitators 205 and 206 can be actively influenced by the inclined plate (not shown) having a predetermined inclination, which is additionally installed at the periphery, so that the microorganisms in the batch reactor 200 can more actively contact the incoming source water.

Also, it can be seen that the wastewater is moved and rotated by the operation of the underwater agitators 205 and 206, and the rotation is interlocked with the vortex generator 228 on the wall surface to improve the stirring ability.

That is, the underwater agitators 205 and 206 and the wall vortex generator 228 installed in the diagonal direction of the batch reactor 200 simultaneously operate with the inflow of the wastewater, so that the nitrogen compound in the batch reactor 200 is converted into the organic carbon source The denitrification process is performed in two stages in the initial stage 1 denitration reaction and the stirring stage. The vortex generator 228 has a rectangular or streamline shape installed on a wall surface, and has a rectangular or streamlined external shape It is possible to maximize the effect of the initial agitation by making the linear air stub into a vortex type air streak on the surface or the curved surface and to induce the secondary denitrification utilizing the organic carbon source of the influent raw water, .

The air diffuser 207 of the reaction tank is connected to the first blower 203 and the second blower 204 to blow air into the batch type reaction tank.

The aeration section for supplying air into the batch type reactor 200 through the air diffuser 201 can be set. The amount of the aeration can be adjusted according to the concentration of the wastewater.

That is, when the concentration of the wastewater is high, the amount of the aeration can be increased by setting the release period longer and frequently. At this time, in the non-aeration period in which the air supply is stopped, the underwater agitation devices 205 and 206 can be operated to prevent sedimentation of the sludge.

As shown in FIG. 4, the distribution pipe 227 is installed at a portion where the wastewater flows into the batch type reaction tank 200, thereby preventing bubbles from being generated due to the dropping of the incoming wastewater. When the bubbles are generated due to the dropping, oxygen may be introduced and the efficiency of the initial denitrification treatment may be reduced. To prevent this, the distribution pipe 227 is bent in the "a" shape to the portion where the wastewater flows into the batch type reaction tank 200, So as to reduce the head drop. This is effective not only for suppressing bubbling but also for initial stirring. Here, the bending portion of the "a" shape may be bent into an arc having a predetermined diameter to further suppress the generation of bubbles.

2, when organic matter, nitrogen, and phosphorus substances are removed by the active microorganisms in the batch type reaction tank 200, only particulate matter such as suspended solids (SS) and MLSS When the membrane separation vessel 300 functions as one separate vessel, the membrane separation vessel 300 can be separated from the batch separation vessel 300 by a stable elevation process, ) Contamination phenomenon can be minimized, so that the replacement cycle of the separation membrane unit 301 can be prolonged.

The membrane of the separation membrane unit 301 included in the membrane separation vessel 300 is immersed in the membrane separation vessel and generates a negative pressure inside the membrane by a suction pump existing outside the membrane separation vessel, And a plurality of units outside the unit 301 are separated into solid-liquid separators by being selectively introduced into the separator unit 301 according to the size of the pores of the separator unit 301.

In order to use the separation membrane unit 301 in the separation membrane filtration process, an immersion type or external pressure separation membrane unit 301 having a nominal pore size of 0.001 mu m to 0.4 mu m is used. The membrane may be a submerged membrane frame having a membrane unit 301 in the form of a hollow fiber, a tubular membrane, or a flat membrane. Preferably, the membrane unit 301 in the form of a membrane good. Therefore, the solids remaining in the membrane separation tank 300 are separated from the treated water only by the three constituent components, and the treated water is discharged stably.

If the nitrified activated sludge not leaked by the separation membrane unit 301 by the above-described treatment is also recycled to the recirculating bath 200 through internal transfer through the reactor pumps 201 and 202, Nitrogen is removed through the denitrification reaction while maintaining the sludge concentration.

The separation membrane suction line provided between the suction pumps 304 and 305 is a plurality of suction lines provided with a differential pressure meter for sensing the permeation pressure of the separation membrane unit 301 and a suction valve for interrupting the inflow of the process water.

A discharge tank (not shown) is connected to the suction pumps 304 and 305 to supply the inhaled treated water to the outside.

The blowers 302 and 303 supply air to the air diffuser 306 of the separation membrane tank disposed at the lower portion of the separation membrane unit 301 immersed in the membrane separation vessel through an air line.

When the inflow amount of the wastewater from the flow rate adjusting tank 100 satisfies the design inflow amount capable of performing a single process in the batch type reactor 200, the inflow of the wastewater into the batch type reactor 200 is performed, The stirrers 205 and 206 in the reaction tank are simultaneously operated to cause the denitrification action in the reactor in the initial anaerobic state. Thereafter, the batch reactor 200 is passed to a biological reaction stage in the exhalation state.

In the reaction step, the blowers 203 and 204 are operated so that the air diffuser in the reaction tank blows air into the batch reaction tank 200, and this reaction step proceeds for 180 to 220 minutes. Depending on the microorganism condition of the reactor, the operator can easily set it.

Subsequently, the batch reactor 200 performs a secondary agitation step, which involves a denitrification process by supplying a small amount of the raw material to the nitrified material during the exhalation process. In the stirring step, the time for operating the underwater agitators 206 and 206 can be set to about 20 minutes, which can be adjusted according to the degree of denitration.

The microbial mixture that has undergone the biological treatment process is transferred to the membrane separator 300 of the call cushion tank.

When the organic matter, nitrogen and phosphorus components are removed by the active microorganisms in the batch reaction tank 200, only particulate matter such as suspended solids (SS) and MLSS are present in the membrane separation tank, Liquid separation.

The separation membrane unit 301 may be connected to a known separation membrane frame apparatus to perform solid-liquid separation, which is connected to a suction pump 304 or 305 existing outside the membrane separation vessel 300 by a suction line .

By the suction pressure generated by the operation of the suction pumps 304 and 305, the mixture outside the separation membrane flows into the separation membrane through the separation membrane pore to cause solid-liquid separation, and the stable treatment water flows out to the discharge vessel by the suction pumps 304 and 305.

Here, in order to delay the occlusion occurring on the surface of the separation membrane and to extend the operation time, the separation unit 306 of the separation membrane unit is installed at the bottom of the separation membrane unit 301. The air diffuser is connected to blowers (302, 303) provided outside the membrane separation unit through an air line, and air is supplied into the membrane separation unit through the operation of the blowers (302, 303).

Accordingly, water flow is formed in the separation membrane unit 301, and the occlusion of the separation membrane surface is delayed, so that the treatment efficiency of the immersion separation membrane can be increased and the life of the separation membrane can be prolonged to prolong the replacement time.

In addition, the present invention can be applied to a simple structure of three sets composed of a flow rate control tank 100 into which wastewater flows, a batch type reaction tank 200 in which reaction with the introduced wastewater, stirring is performed, and a membrane separation tank 300, , It is possible to minimize the area of owned land by reducing the number of compartments compared to conventional MBR processes for advanced treatment of sewage and wastewater.

The apparatus for reclaiming wastewater according to the present invention, which is a combination of continuous batch and membrane separation, is merely an example, and those skilled in the art will appreciate that various modifications and equivalent embodiments can be made without departing from the scope of the present invention. You will know the point.

Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: Flow regulator
101, 102:
A, B, C: Water gauge
200: batch reactor
201, 202: Reactor pump
203,204: Reactor blower
205,206: stirring device
207: Distillation unit of reaction tank
227: Distribution pipe
228: vortex generator
300: membrane separation tank
301: Separation unit
302, 303: blower
304, 305: suction pump
306: Air diffuser of membrane separation

Claims (7)

A recycling apparatus for wastewater treatment combined with a continuous batch system and a membrane separation,
A flow regulating tank into which sewage is introduced;
Reaction to the incoming wastewater, and a stirred tank;
A water level meter for transmitting level measurement information measured by dividing the amount of wastewater flowing into the flow rate adjusting tank to a predetermined level, to the controller;
A control unit for controlling the transfer to the batch type reaction tank at a constant rate according to the amount of the introduced sewage;
A vortex generator installed at an arbitrary position on an extended line or on an underwater agitator and diagonally on either side of the batch reactor wall;
A contact material for facilitating microbial culture in the batch reactor;
A distribution pipe installed on the upstream side of the inflow pipe of the batch type reaction tank;
A membrane separation tank connected to the batch type reaction tank for solid-liquid separation to produce treated water or convey excess sludge;
A plurality of separation membrane units immersed in the membrane separation vessel and being solid-liquid separated while the mixture outside the separation membrane unit flows into the separation membrane unit through the separation membrane unit gap by the suction pressure generated by the operation of the suction pump existing outside the membrane separation vessel;
A suction pump provided outside the membrane separation tank to generate a suction force;
A plurality of separation membrane suction lines installed between the suction pumps and provided with a differential pressure meter for sensing the permeation pressure of the separation membrane unit and a suction valve for interrupting the inflow of the process water;
A discharge tank which receives the treated water sucked by the suction pump and discharges the treated water to the outside;
A blower installed outside the membrane separation tank to supply air to the batch type reaction tank for delaying occlusion and prolongation of operation time occurring on the surface of the separation membrane unit; And
And an air diffuser connected to the blower through an air line to receive air from the blower and supply the air to the inside of the membrane separation unit. The method according to claim 1,
Wherein when the amount of inflow water is low according to the level measurement information and it is determined that the batch reactor can not proceed with the normal process, the flow rate adjusting tank is operated in the intermittently operating low load mode in which the first and second blowers are operated only for a predetermined time In accordance with the level measurement information, the high load mode is operated on the flow control valve due to excessive inflow of the wastewater inflow amount, the first and second inflow pumps are operated to shorten the inflow time, and the first and second blowers Wherein the waste water treatment apparatus comprises a continuous batch system and a membrane separation system. 2. The method according to claim 1, wherein the batch-type reaction tank is divided into a continuous batch type reactor and a continuous batch type batch reactor, in which an initial stirring rate is increased by distributing the influent water transfer piping to the front end of an underwater agitator of the batch type reactor, And a membrane separation. The separator unit according to claim 1, wherein the separator unit is a submerged or external-pressure separator unit having a nominal pore size of 0.001 mu m to 0.4 mu m, and the shape of the membrane is selected from the group consisting of hollow fibular, tubular, Characterized in that the continuous batch type and the membrane separation are combined. [2] The apparatus of claim 1, wherein the distribution pipe is installed in a portion where the wastewater flows into the batch type reaction tank, and when the bubbles are generated by the dropping, And the bottom of the reaction tank is directed to the lower part of the reaction tank. A method for recycling a wastewater treatment process comprising a batch regeneration tank, a batch reactor, and a membrane separation tank,
An inflow step of inflowing the inflow auxiliary pump into a batch type reaction tank for treating wastewater in accordance with level measurement information obtained by dividing the amount of wastewater flowing in the flow rate adjustment tank into a predetermined level;
A reaction step of operating the first blower and the second blower to increase the reaction time when the concentration of the wastewater in the batch type reaction tank is equal to or more than a predetermined value, and adjusting the amount of the aeration according to the concentration of the wastewater through the air diffuser;
Stirring the wastewater by means of an underwater agitating device in the batch type reaction tank, a vortex generating device on a wall surface, and a distribution pipe provided on the upstream side of the influent pipe;
Transferring the microbial mixed solution having undergone the biological treatment process to a membrane separation tank for aerobic treatment, and solid-liquid separation through a separation membrane unit to produce treated water;
Recycling the nitrified activated sludge that has not been spilled by the separation membrane unit to the batch reactor by internal transfer; And
And discharging the supernatant separated in the solid-liquid separation step to the treated water tank. The method according to claim 6,
The low-load mode step of intermittently operating the first and second blowers only for a predetermined time when the inflow water amount is low according to the level measurement information and the batch type reactor is judged to be unable to proceed with the normal process; And
A high load mode step of operating the first and second inlet preliminary pumps to shorten the inflow time and simultaneously operating the first and second blowers on the flow control valve according to the excessive inflow of the wastewater inflow amount according to the level measurement information; Wherein the waste water treatment system further comprises a continuous batch system and a membrane separation system.

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