KR20170136730A - Rotating microbial contactor and wastewater treatment system having the same - Google Patents

Abstract

The present invention relates to a rotating microbial contactor comprising: a microbial contact tank for culturing microorganism mixed virus to treat wastewater; a plurality of net microbial contact agents attached with a microbial film and installed to be rotatable in the microbial contact tank; an inspection window installed on the side of the microbial contact tank and inspecting a deposition state of deposits at the bottom of the microbial contact tank; and a sampling nozzle collecting wastewater in the microbial contact tank according to the inspection result. A wastewater state can be easily checked and instant action can be possible according to a deposit state.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary microorganism contact device and a wastewater treatment system including the same,

The present invention relates to a rotary microorganism contact device for removing organic substances, nitrogen and phosphorus contained in wastewater by using microorganism mixed bacteria, and a wastewater treatment system comprising the same.

Nutrients contained in wastewater and organic wastewater, namely nitrogen and phosphorus, cause eutrophication and red tide on refined lakes and coastal waters.

Although the existing technology has achieved a considerable level of removal of organic and suspended matters contained in sewage and organic wastewater, the technology for removing nutrients such as nitrogen and phosphorus is insufficient, so that the facility cost and facility maintenance cost The process is also very complicated and difficult to operate, which is why we are avoiding the purification facilities of these methods.

In consideration of this situation, a technique has been developed for removing the poorly decomposable organic matter of the wastewater by using a microorganism mixed microorganism. In this regard, a rotary microorganism contact apparatus for rotating the reticulated microorganism with the microbial film in the microorganism contact tank has been developed There is a bar. (See Patent Document 1)

According to this, the suspended solids of the treated water may be deposited on the bottom of the microbial contact tank, and when the deposition phenomenon becomes severe, anaerobicization occurs in the deposit, adversely affecting the treatment efficiency of the microbial contact apparatus. Therefore, in order to maintain the efficiency of the rotating microorganism contact device stably, it is necessary to actively cope with the deposited microorganism contact bottom.

Japanese Patent Application Laid-Open No. 8-57492 (Mar. 08, 1996)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotatable microorganism contact apparatus configured to facilitate confirmation of immersion state and treated water state of immersion materials in a microorganism contact tank.

In order to accomplish the above object, the present invention provides a microorganism contactor for culturing microorganism mixed bacteria for wastewater treatment, a plurality of reticulated microorganism contact agents attached to the microorganism film and rotatably mounted in the microorganism contact tank, A rotating microorganism contact device provided on a side surface of the microorganism contact tank and including a checking window for checking the immersion state of deposits on the bottom of the microorganism contact tank and a sampling nozzle for collecting wastewater in the microorganism contact tank according to the result of the checking, .

According to the rotary microorganism contacting apparatus of the present invention, the microorganism mixed bacteria may include Bacillus subtilis.

According to the rotary microorganism contacting apparatus of the present invention, the inspection window and the sampling nozzle may be installed below the microorganism contact tank.

The rotary microorganism contact apparatus of the present invention may further include a deposit auxiliary air spraying pipe for spraying air toward the bottom of the microorganism contact tank to suspend deposits on the bottom of the microorganism contact tank. Here, the plurality of submerged useful air sprays are provided in the microorganism contact tank, and may be spaced apart from each other by a predetermined distance.

The rotary microorganism contact apparatus of the present invention may further include an air injection tube for removing a microorganism film for spraying air toward the microorganism contact body to remove the microorganism film of the microorganism contact body.

According to the rotary microorganism contacting apparatus of the present invention, the microorganism film desorbing air injection tube may have a number of one to three.

According to the rotary microorganism contacting apparatus of the present invention, an air supply pipe for removing microbial film may be further provided on the outside of the microbial treatment tank to supply air to the microbial film removing air blowing pipe.

According to the rotary microorganism contacting apparatus of the present invention, the microorganism film desorption air supply pipe may be divided into a plurality of branch pipes which are connected to the microorganism film separating air discharge pipe through the wall of the microorganism contact tank.

According to the rotary microorganism contacting apparatus of the present invention, the plurality of branch pipes may be provided with air supply amount regulating valves for regulating the amount of air supplied to the air injection tube for removing the microbial film.

According to the rotary microorganism contacting apparatus of the present invention, the air injection tube for removing the microorganism film may have a plurality of partitions dividing the inside into a plurality of sections.

According to the rotary microorganism contacting apparatus of the present invention, the branch pipe can be formed to correspond to the zone divided by the partition wall. For example, the zones divided by the partition walls may have two to six numbers, and the branches may be connected to the divided zones, respectively, and may have two to six numbers.

According to the rotary microorganism contacting apparatus of the present invention, a washing water supply pipe may be further provided on the inner wall of the microorganism contact tank for spraying washing water on the microorganism contact body to desorb the microbial film and organic matter.

According to the rotary microorganism contacting apparatus of the present invention, the washing water supply pipe may include a fixed supply pipe installed on one side wall of the microorganism contact tank, and a plurality of microorganisms arranged on the other side wall of the microorganism contact tank so as to face the fixed supply pipe, And the like.

The rotary microorganism contact apparatus of the present invention may further include driving means for reciprocating the washing water supply pipe in the horizontal direction.

According to the rotary microorganism contacting apparatus of the present invention, the driving means includes a cylindrical cam having an insertion protrusion protruded from the wash water supply pipe, a cam groove in which the insertion protrusion is inserted and moved, As shown in FIG.

According to another aspect of the present invention, there is provided a water treatment system comprising a screen tank for pretreating contaminants and suspended substances contained in wastewater, a flow rate adjusting tank for adjusting a flow rate of the wastewater passing through the screen tank, a microbiological activator being administered to the raw water introduced from the flow rate adjusting tank, A first metering tank for mixing the sludge with the first metering tank, a rotary microorganism contact apparatus of the above configuration configured to be connected to the first metering tank, and a microorganism activator connected to the rotary microorganism contact apparatus, And a bioreactor having a plurality of reaction chambers for removing untreated organic matter and nutrients by reacting the treated water supplied from the second metering tank with a second metering tank for mixing the sludge with the second metering tank.

According to the present invention having the above-described structure, an inspection window for checking the state of sediment and a sampling nozzle for collecting wastewater can be installed in the microorganism contact tank, so that the state of the treated water can be easily confirmed.

In addition, according to the present invention, there can be provided an effect that an immersion auxiliary air spraying pipe can be installed at the lower part of the microbial contact tank to promptly cope with the deposit condition.

According to the present invention, an air supply pipe for spraying air to the reticulated microorganism contactor and a wash water supply pipe for spraying the wash water are provided to easily remove the microbial film attached to the microbial contactor. Furthermore, the cleaning water supply pipe can be configured to be movable so that the removal efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a wastewater treatment system using a microorganism mixed bacteria according to an embodiment of the present invention; FIG.
2 is a side view of a rotatable microorganism contact apparatus according to an embodiment of the present invention.
3 is a front sectional view of the rotary microorganism contact apparatus shown in Fig.
4 is a view showing an operating state of the moving supply pipe shown in Fig.
5 is a view showing an example of driving means of a moving supply pipe according to the present invention.
6 is a side cross-sectional view of a rotating microorganism contact apparatus according to another embodiment of the present invention.

Hereinafter, a rotary microorganism contact apparatus and a wastewater treatment system having the same according to the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, the wastewater treatment system using the microorganism mixed bacteria according to the present embodiment includes a wastewater treatment unit, a first metering tank 9, a rotating microorganism contacting apparatus 11, a second metering tank 13, (14), and the like.

The wastewater pre-treatment unit is for pretreatment of contaminants and suspended substances contained in the wastewater, and may include a first screen tank 2 provided with a first screen, a second screen tank 3 provided with a second screen, and the like. The raw water is introduced into the first screen tank 2 through the inflow pipe 1 and the relatively large suspended substances contained in the raw water are removed through the first screen provided in the first screen tank 2. In addition to the configuration in which the two screen shafts are sequentially installed as described above, the screen shafts can be configured to have only one screen shafting.

After the second screen tank 3, a flow rate adjusting tank 6 for adjusting the flow rate of the wastewater can be installed. An air supply pipe is provided in the flow rate control tank 6 to prevent the deposition of suspended substances and prevent the decay of raw water. The raw water that has passed through the flow rate adjusting tank 6 is sent to the first metering tank 9 through the transfer pipe 7.

The first metering tank 9 provides a space for administering the microbial activator to the raw water introduced from the flow rate regulating tank 6 and provides a space for introducing the return water and the transporting sludge described below.

The rotary microorganism contactor 11 is connected to the first weighing tank 9 through a transfer pipe 10 and functions as a habitat suitable for cultivating mixed microbes to purify wastewater from the first weighing tank 9 . The rotary microorganism contactor 11 has a structure in which a rotatable microorganism contactor 11b is rotatably driven in the microorganism contact tank 11a and the detailed structure of the rotatable microorganism contactor 11 will be described in detail later .

The second metering tank 13 is connected to the rotating microorganism contact device 11 and provides a space for administering the microbial activator to the raw water introduced from the rotating microorganism contact device 11. [ Similarly to the first metering tank 9, the second metering tank 13 also provides a space through which the return water and the transporting sludge are introduced.

The bioreactor 14 has a plurality of reaction chambers for reacting the treated water supplied from the second metering tank 13 to remove untreated organic matter and nutrients. The number of reaction chambers constituting the bioreactor 14 may be three to six. In this embodiment, three reaction chambers 14a, 14b and 14c are provided. An air supply pipe for supplying air is provided in the inside of the biological reaction tank 14. In this embodiment, an air supply pipe is provided only in the second reaction chamber 14b and the third reaction chamber 14c.

The bioreactor 14 removes the first treated organic matter and nutrients as a metabolite by injecting air so that a mixed microbial bacteria comes into contact with the wastewater in a fluidized phase and maintains a certain amount of DO, and mixes Liquor Suspended Solids (MLSS) .

A circulation pump 15 and a circulation pipe 16 are provided at the outlet of the biological reaction tank 14 and a part of the treated water discharged from the third reaction chamber 14c of the biological reaction tank 14 is supplied to the circulation pump 15 To the first and second weighing vessels 9, Thus, the concentrations of the microbial bacteria in the microbial contact tank 11a and the bioreactor 14 can be maintained at optimum levels.

The treated water from the bioreactor 14 is transferred to the settling tank 18 by the transfer pipe 17 to perform solid-liquid separation, and the supernatant is introduced into the discharge tank 24 and discharged.

In the settling tank 18, a conveying sludge pump 19 and a conveying sludge pipe 20 for conveying the sludge to the first and second weighing vessels 9 and 13 are connected to maintain a high concentration of the microorganism mixed bacteria.

The surplus sludge remaining after returning the sludge from the sedimentation tank 18 is collected in the sludge concentration tank 23 through the surplus sludge pipe 22 by the surplus sludge pump 21 and sent to the dehydration treatment facility Is discarded.

FIG. 2 is a side view of a part of the rotatable microorganism contact apparatus according to an embodiment of the present invention, and FIG. 3 is a front sectional view of the rotatable microorganism contact apparatus shown in FIG.

2 and 3, the rotary microorganism contact device 11 includes a microorganism contact tank 11a for culturing microorganism mixed bacteria, a plurality of reticulated microorganism contactors 11b rotatably installed in the microorganism contact tank, .

In the microorganism contact tank 11a, a rotating shaft 11e is rotatably installed, and a plurality of microorganism contacting bodies 11b are fixed along the axial direction on the rotating shaft 11e. A rotary shaft driver 25 for rotating the rotary shaft 11e may be installed at one end of the rotary shaft 11e.

The rotatable microorganism contactor 11b is formed in a reticular form and attached with a microfilm film (Biofilm). The rotatable microorganism contactor 11b is made of a polyvinylidene chloride (polyvinylidene chloride) -based adhesive so that a rigid synthetic fiber material, such as polyvinylidene chloride, can bend properly and is irregularly reticular Spraying method, and adhered to each other at the intersections of the fibers in accordance with the adhesion and coagulation of the adhesive. The rotatable microorganism contactor 11b has a high porosity so that the wastewater and air can easily enter and exit the network when rotating so that the growth of the microorganism-mixed microorganisms can be enhanced and a good treatment effect can be obtained.

The rotatable microorganism contactor 11b is supplied with the wastewater and air for the fiber structure in an appropriate state to each other as a part of the rotatable microorganism contactor 11b is immersed in the wastewater and partially exposed to the atmosphere and rotated at a proper speed.

When the rotatable microorganism contact body 11b of the special mesh-like porous ceramics fabricated with the synthetic fiber is partially immersed in the wastewater and rotates, the microorganisms containing the microorganism mixed microorganism as the main body due to the contact between the wastewater and the air, As it grows in logarithms, the pollutants in the wastewater are ingested and metabolized vigorously.

On the side surface of the microorganism contact tank 11a, an inspection window 26 for checking the immersion state of the deposit on the bottom of the microorganism contact tank 11a is provided. The inspection window 26 may be installed at a lower portion (for example, near the bottom) of the microorganism contact tank 11a.

The microbial contact tank 11 is provided with a sampling nozzle 28 for collecting the wastewater in the microbial contact tank 11a according to the check result of the immersion state of the deposit. The sampling nozzle 28 may also be installed below the microorganism contact tank 11a.

In the interior of the microorganism contact tank 11a, a sediment auxiliary air spraying pipe 11d for suspending deposits on the bottom of the microorganism contact tank 11a may be provided. The deposit inflow port 11d is configured to float the bottom of the microbial contact tank 11a by spraying air toward the bottom of the microbial contact tank 11a. For this purpose, the deposition-assisted air spraying tube 11d may be provided with a spray hole h2 opened toward the bottom.

The operator can visually confirm the immersion state of the deposit on the bottom of the microorganism contact tank 11a through the inspection window 26. When the deposit is piled up to a predetermined thickness or more, the operator collects the wastewater through the sampling nozzle 28, can do. In addition, according to the checking result of the inspection window (26) or the result of the sampling inspection, air can be supplied to the deposit inflow air injection pipe (11d) to float the bottom deposit.

The microbial film removing air blowing pipe 11c may be provided in the lower part of the microbial contact tank 11a. The microbial film removing air blowing pipe 11c may be provided in the microbial contact tank 11a, And in the case of this embodiment, the sediment auxiliary air spraying pipe 11d is separately provided thereon.

The microbial film removing air blowing pipe 11c is configured to blow air toward the microbial contactor 11b to thereby release the microbial film of the microbial contactor 11b. For this purpose, the position of the microbial contactor 11b And an injection hole h1 that is opened toward the discharge port.

If the amount of microorganism mixed bacteria is increased on the network-type rotary contact body 11b, the microbial film of the microorganism mixed bacteria may become insufficient in oxygen transfer and become anaerobic. The microbial film removing air blowing pipe 11c blows air into the microbial contact tank 11a to remove the attached microbial film more than necessary, thereby improving the treatment efficiency. In this regard, the microorganism contact tank 11a may be provided separately with a microorganism film inspection window 27 for confirming the microbial film adhesion state, and it may be disposed at a position corresponding to the position of the microbial contactor 11b, , And the deposit-checking window 26, as shown in Fig.

The microbial film removing air blowing pipe 11c and the deposit blowing air blowing pipe 11d may be provided in the microbial contact tank 11a in a plurality of places, and they may be spaced apart from each other by a predetermined distance. For example, the air injection tube 11c for removing the microbial film may be divided into one to three depending on the number of the microbial contact bodies 11b. In the present embodiment, three microbial film removing air blowing pipes 11c are provided at equal intervals from each other, and two submerged useful air blowing pipes 11d are arranged at even intervals from each other. However, The number, position, spacing, etc. of the microorganism film separating air discharge pipe 11c and the depositing auxiliary air discharging pipe 11d may be variously modified.

Referring to FIG. 3, a washing water supply pipe 29, 30 may be further provided on the inner wall of the microbial contact tank 11a to spray the washing water to the microbial contactor 11b to remove the microbial film and organic matter. In this case, at least one of the washing water supply pipes 29 and 30 may be reciprocated in the horizontal direction. In this case, the washing water supply pipes 29 and 30 may be installed in the microbial contact tank 11a, Lt; / RTI >

Hereinafter, the case where any one of the washing water supply pipes 29 and 30 is installed in the form of a fixed supply pipe 29 in the form of a fixed installation and the other is installed in the form of a moving supply pipe 30 configured to be reciprocated horizontally For example,

4 is a view showing an operating state of the moving supply pipe shown in FIG.

According to Fig. 4, the moving supply pipe 30 is installed on the inner wall of the microorganism contact tank 11a along the direction parallel to the rotating shaft lie. The moving supply pipe 30 provides a passage through which water supplied from the outside is moved, and a plurality of nozzles 30a facing the microbial contactor 11b are formed on the outside. The nozzle 30a may be provided at a position corresponding to the number of the microbial contactor 11b and at a position facing the microbial contactor 11b.

The nozzle 30a reciprocates within a predetermined distance as the moving feed pipe 30 reciprocates horizontally as shown by an arrow in FIG. 3, thereby enlarging the jetting area of the nozzle 30a. As a result, the washing water can be sprayed to the edge portion of the microbial contactor 11b and further to the space between the microbial contactors 11b.

In addition, as in the present embodiment, the fixed supply pipe 29 and the movable supply pipe 30 are used together to enlarge the washing area to the area where the washing water does not reach when the fixed supply pipe 29 is used, There is an advantage to be able to.

The moving supply pipe 30 is provided with driving means for horizontally reciprocating it, and Fig. 5 shows an example of the moving supply pipe driving means related to the present invention.

5, a drive means 32 for horizontally reciprocating the movement supply pipe 30 is provided at both ends of the movement supply pipe 30. As shown in Fig. However, it is also possible that the drive means 32 is provided only at one end of the movement supply pipe 30.

The driving means 32 may have a configuration including the insertion projection 32a, the cylindrical cam 32c, and the driver 32d as shown in Fig.

The insertion projection 32a is formed so as to protrude from the movement supply pipe 30 and is inserted into the cam groove 32b formed in the cylindrical cam 32c. The cam groove 32b is in the form of a closed loop along the outer periphery of the cylindrical cam 32c and the insertion projection 32a is movably coupled to the cam groove 32b. The driver 32d (for example, a motor) is connected to the shaft of the cylindrical cam 32c to rotationally drive the cylindrical cam 32c.

The moving supply pipe 30 can be installed in a guide member 31 for guiding the linear movement thereof so as to be linearly movable.

The cylindrical cam 32c rotates in accordance with the operation of the driver 32d so that the insertion protrusion 32a moves along the slope groove 32b in the cam groove 32b, Movement is performed.

Such a horizontal reciprocating mechanism of the moving supply pipe is an example of various implementations, and the structure of the driving means 32 may be modified to have a structure different from the structure described above.

FIG. 6 is a side cross-sectional view of a rotary microorganism contactor according to another embodiment of the present invention, showing an example of an air spraying tube for removing microorganisms, an air supply amount control valve, and an air supply tube for removing microorganisms.

According to the present embodiment, the microbial treatment tank 11a may be further provided with an air supply pipe 11f for removing microbial film for supplying air to the microbial film removing air blowing pipe 11c. A branch pipe 11g connected to the microbial film removing air blowing pipe 11c through the wall of the microbial contact tank 11c may be branched into a plurality of branch pipes 11g in the microbial film removing air supply pipe 11f.

According to this, the air supplied from the outside is supplied to the air injection pipe 11c through the air supply pipe 11f, the branch pipe 11g, and injected into the contact tank 11a. The branch pipe 11g may have 2 to 6 pieces, and in this embodiment, four branch pipes 11g are formed.

The plurality of branch pipes 11g may be provided with an air supply amount regulating valve 11h for regulating the amount of air supplied to the microbial film removing air blowing pipe 11c. A plurality of partitions 11i for dividing the inside of the microfilm film removing air blowing pipe 11c into a plurality of areas may be formed.

According to this, each branch pipe 11g can be formed to correspond to the area divided by the partition wall 11i. For example, the section divided by the partition 11i may have two to six numbers, and the branch tube 11g provided with the air supply amount control valve 11h may be divided into two sections You can have 6 numbers. According to this structure, it is possible to individually adjust the amount of air supplied to each of the sections partitioned in the air injection tube 11c according to the amount of the microbial film, and thereby to more effectively spray air on the plurality of microbial contact bodies 11b There is a possible advantage.

On the other hand, in FIG. 6, the sediment auxiliary air spraying pipe 11d is not shown separately, but the sediment auxiliary air spraying pipe 11d may be separately provided below the micro-organism film releasing air spraying pipe 11c It will be possible.

In the wastewater treatment system described above, the microorganism mixed bacteria may include Bacillus sp. G., And the Bacillus species among the microorganism mixed bacteria can be ignited depending on the active ingredient and the operation method.

The rotary microorganism contact apparatus and the wastewater treatment system having the rotary microorganism contact apparatus described above are not limited to the configuration and the method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments may be selectively And may be configured in combination.

1: inlet pipe 4: raw water transfer pump
2: first screen group 6: flow rate adjusting tank
3: Second screen set 9: First weighing set
5, 7, 10, 12, 17: Feed pipe 11: Rotary microorganism contact device
11a: Microorganism contact tank 11b: Rotary microorganism contact body
11c: Air blowing pipe for microbial film removal
11d: Deposited auxiliary air blowing pipe 11e:
11f: Microorganism film desorption air supply pipe
11g: branch pipe 1 1h: air supply regulating valve
11i:
13: Second metering tank 14: Bioreactor
14a, 14b, 14c: first to third reaction chambers 15: circulation pump
16: circulation pipe 23: sludge thickener tank
18: settling tank 24: discharge tank
19: Return sludge pump 20: Return sludge pipe
21: excess sludge pump 22: excess sludge pipe
25: Rotary axis actuator 26: Deposition check window
27: Microbial film inspection window 28: Waste water sampling nozzle
29, 30: Wash water supply pipe
30a: nozzle 31: guide member
32: driving means 32a: insertion projection
32b: cam groove 32c: cylindrical cam
32d: driver

Claims (18)

A microbial contact tank for culturing microorganism mixed bacteria for treating wastewater;
A plurality of reticulated microorganism contactors to which a microbial film is attached, the reticulated microbial contactor being rotatably mounted in the microbial contact tank;
An inspection window installed on a side surface of the microbial contact tank for checking the immersion state of the deposit on the bottom of the microbial contact tank; And
And a sampling nozzle for collecting wastewater in the microbial contact tank according to the result of the inspection. The method according to claim 1,
Wherein the microorganism-mixed microorganism includes Bacillus subtilis microorganisms. 3. The method according to claim 1 or 2,
Wherein the inspection window and the sampling nozzle are installed below the microorganism contact tank. 3. The method according to claim 1 or 2,
Further comprising a depositing auxiliary air spraying pipe for spraying air toward the bottom of the microorganism contact tank to suspend deposits on the bottom of the microorganism contact tank. 5. The method of claim 4,
The apparatus for contacting microorganisms according to any one of claims 1 to 3, wherein the plurality of microorganism contact tubes are provided in the microorganism contact tank. 3. The method according to claim 1 or 2,
Further comprising a micro-organism film removing air blowing pipe for spraying air toward the micro-organism contact body to remove the microorganism film of the micro-organism contact body. The method according to claim 6,
Wherein the microbial film removing air introducing pipe is one to three. The method according to claim 6,
Further comprising an air supply pipe for removing the microbial film from the microbial treatment tank and supplying air to the microbial film removing air blowing pipe. 9. The method of claim 8,
Wherein the microorganism film separating air supply pipe is divided into a plurality of branch pipes which are connected to the micro-organism film separating air discharge pipe through the wall of the microorganism contact tank. 10. The method of claim 9,
Wherein the plurality of branch pipes are provided with an air supply amount regulating valve for regulating the amount of air supplied to the micro-organism film removing air blowing pipe. 11. The method of claim 10,
Wherein the microbial film removing air introducing tube has a plurality of partitions dividing the inside thereof into a plurality of zones. 12. The method of claim 11,
Wherein the branch pipe is formed to correspond to a zone divided by the partition wall. 12. The method of claim 11,
The zones divided by the partitions have 2 to 6 numbers,
Wherein the branch tubes are connected to the divided zones, respectively, and have a number of two to six. 3. The method according to claim 1 or 2,
Further comprising a washing water supply pipe installed on an inner wall of the microorganism contact tank and spraying wash water to the microorganism contact body to thereby desorb the microbial film and organic matter. 15. The washing machine according to claim 14,
A fixed supply pipe installed on one side wall of the microorganism contact tank; And
And a moving supply pipe installed on the other side wall of the microorganism contact tank so as to face the fixed supply pipe and configured to reciprocate in a horizontal direction. 15. The method of claim 14,
Further comprising driving means for reciprocating the washing water supply pipe in a horizontal direction. 17. The apparatus according to claim 16,
An insertion protrusion protruding from the wash water supply pipe;
A cylindrical cam having a cam groove into which the insertion protrusion is inserted; And
And a driver for driving the cylindrical cam to rotate. A screen tank for pretreatment of impurities and suspended matters contained in the wastewater;
A flow regulating tank for regulating the flow rate of the wastewater passing through the screen tank;
A first metering tank for mixing the transporting sludge with the microbial activator to the raw water introduced from the flow rate adjusting tank;
A rotatable microorganism contact apparatus according to any one of claims 1 to 17 configured to be connected to the first metering tank;
A second metering tank connected to the rotating microorganism contacting device, for mixing the microbial activator and the transporting sludge in the raw water introduced from the rotating microorganism contacting device; And
And a bioreactor having a plurality of reaction chambers for removing untreated organic matter and nutrients by reacting the treated water supplied from the second metering tank.

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