KR100510269B1 - Dipping type membrane separation system for advanced sewage and waste water treatment - Google Patents

Abstract

The present invention relates to an immersion membrane separation system for advanced sewage and wastewater treatment. The present invention relates to a nutrient substance that can cause eutrophication together with various suspended substances and organic substances present in sewage and wastewater. Simultaneously removes nitrogen and phosphorus, senses the differential pressure generated in each membrane of the membrane unit, supplies cleaning chemicals by the detected differential pressure, and cleans the membrane to increase treatment efficiency in the waste water by the system. The immersion membrane separation system for advanced sewage and wastewater treatment was operated smoothly.

To this end, the present invention is provided with a immersion tank, a screen tank, a flow adjustment tank, a microfiltration screen, a treatment tank, and a sludge concentration storage tank in the immersion membrane separation system for filtering and treating the waste water, the microfiltration Installed on the outside of the screen and the raw water sent from the microfiltration screen flows to remove contaminants contained in the mixed solution and the raw water and the phosphorus to elute phosphorus, and is installed outside the anaerobic tank included in the mixed solution Membrane separation tank equipped with a membrane unit having a plurality of separation membranes to remove the contaminants and phosphorus substances and the suspended solids, and the nitric acid contained in the mixed solution by the denitrification reaction is installed outside the membrane separation to remove the nitrogen (N ₂₎ and oxygen (O ₂₎ from nitrogen with removal of the mixed solution through the return pump and return line An anaerobic tank for conveying to a microfiltration screen, a distribution line connected to the microfiltration screen for dissolving and introducing raw water into the anaerobic tank and an anaerobic tank from the microfiltration screen to a predetermined ratio, and connected to a conveying pump in the anoxic tank for the anaerobic tank It is comprised by the conveyance line which conveys the mixed liquid in a inside to a microfiltration screen.

Description

Dipping Type Membrane Separation System for Advanced Wastewater Treatment System

The present invention relates to an immersion membrane separation system, and more particularly, to an immersion membrane separation system for advanced wastewater treatment to increase the treatment efficiency of wastewater.

In general, the immersion membrane separation system is a system for filtering and filtering the particles of sewage and wastewater, and purifying the wastewater cleanly.

In the general immersion membrane separation system, as shown in Figure 1, the sedimentation tank 10, while preventing the rapid flow of incoming waste water (raw water (raw water)) and sand or small gravel (GRIT) contained in the raw water ) So that the raw water is sent to the screen tank 20 provided with a plurality of screens 21 to remove the coarse mess contained in the raw water from each screen 21, and the coarse mess is removed. The raw water flows out at a constant flow rate from the flow rate adjustment tank 30 provided outside the screen tank 20.

The flow regulating tank 30 is connected to the raw water pump 31 having a pumping force to discharge the raw water in the flow adjusting tank 30 to the outside and to control the operation of the raw water pump 31 according to the level of the raw water. The water level sensor 33 is connected to the suction pump 90 to be described later.

Therefore, the level of the raw water introduced by the water level sensor 33, that is, high (HIGH), low (LOW) is sensed, and the flow rate adjustment tank as the raw water pump 31 is operated / stopped according to the detection signal A constant flow rate flows out from the inside of 30.

In other words, when the water level sensor 33 detects the level of raw water in the flow regulating tank 30 and the raw water level is high, that is, when the raw water is somewhat filled in the flow regulating tank 30, the raw water pump 31 is turned on. By operating the raw water in the flow adjustment tank 30 to the outside, when the water level is low (LOW), the raw water pump 31 is not operated and by the raw water supplied from the screen tank 20 The water level of the flow regulating tank 30 becomes high.

In addition, since the blower 32 is installed outside the flow regulating tank 30, as the air generated in the blower 32 is supplied to the flow regulating tank 30, the raw water in the flow regulating tank 30 has a water flow phenomenon. Is generated.

The raw water flowing out of the flow adjusting tank 30 is introduced into the microfiltration screen 40 and passes through the microfiltration screen 40 to remove and remove fine contaminants contained in the raw water, and the raw water is aerated tank 50. ) Is mixed with the mixed liquid in the aeration tank 50, that is, the mixed liquid mixed with raw water and microorganisms.

Since a blower 52 for supplying air to the mixed liquid in the aeration tank 50 is installed outside the aeration tank 50, the mixed liquid is mixed with the mixed liquid while the water flow phenomenon occurs due to the air supplied from the blower 52. Since the microorganisms eat the organic pollutants contained in the mixed solution, the organic pollutants are removed in the aeration tank 50.

The membrane separation exhalation tank 60 is installed outside the aeration tank 50, and the mixed liquid in the aeration tank 50 is formed through a flow path formed between the aeration tank 50 and the membrane separation exhalation tank 60. It is introduced into the membrane separation tank (60).

Since at least one membrane unit 61 is installed in the membrane separation tank 60, the mixed liquid introduced into the membrane separation tank 60 passes through the membrane unit 61 while suspended solids contained in the mixture liquid. It will be filtered out.

In addition, since the suction pump 90 connected to the separation membrane unit 61 is installed outside the membrane separation tank 60, the membrane separation tank 60 is formed by suction force generated by the operation of the suction pump 90. The mixed liquid in the filter flows into the membrane unit 61 and passes through the membrane unit 61 to filter suspended matter.

While being guided or guided by a guide rail (not shown) fixedly installed in the membrane separation tank 60, the membrane is placed in or taken out of the membrane separation tank 60 to filter the suspended solids contained in the membrane separation tank 60. As shown in FIG. 2, the separation membrane unit 61 is provided with a separation membrane frame 65 having a plurality of membranes for filtering the suspended solids contained in the mixed solution, and installed at a lower portion of the separation membrane frame 65 to be sent from the outside. It is comprised by the diffuser part 66 which supplies air to the separator frame 65. As shown in FIG.

The membrane frame 65 has a pair of upper module supports in the form of a hollow tube coupled to an upper portion of the support portion 651 coupled to a plurality of angles to form an outer space, and the upper portion of the support portion 651 ( 652, a lower module support 653 in the form of a channel coupled to the lower portion of the support 651, and a high pressure hose extended from the suction pump 90 by being coupled to the upper module support 652. And is installed between the connecting pipe 654 of the hollow tube having a discharge port for discharging the water collected into the upper module support 652 to the outside, and the upper and lower module supports (652, 653) into the separator unit 61. A plurality of separation membranes 655 for filtering the suspended solids contained in the mixed solution and are connected to both sides of each of the separation membranes 655 and coupled to the upper and lower module supports 652 and 653 and pass through the separation membrane 655. While the filtered water is collected The water pipe 656 is provided.

The diffuser 66 has an air inlet hole for introducing air from the outside and a diffuser tube 661 in which a hollow tube-shaped pipe is coupled in a square shape to form a flow path of air introduced through the air inlet hole. And a plurality of nozzles 662 coupled to the inside of the diffuser 661 to supply air to each of the separation membranes 655, as well as to generate water flow by the supplied air, and each of the nozzles 662. A plurality of holes 663 are formed on the upper surface and through which the air is discharged so that air is generated as air bubbles.

The membrane unit 61 configured as described above is introduced into the membrane frame 65 of the membrane unit 65 by the suction force of the suction pump 90, and the mixed liquid in the membrane separation tank 60 is introduced into the membrane frame. As the floating material is filtered while passing through each of the separation membranes 655 of 65, the treated water from which the floating material is filtered is collected into each collection pipe 656.

The treated water collected into the respective collection pipes 656 flows into the pair of upper module supports 652 by the suction force generated as the suction pump 90 continues to operate, and flows through the outlet of the connection pipe 654. It is discharged from the membrane unit 61 through the suction pump 90 is introduced into the treatment tank (70).

At this time, the air generated from the blower 62 is sent from the diffuser 66 installed at the lower part of the membrane frame 65 to flow into the diffuser 661 of the diffuser 66, and the introduced air Each nozzle 662 through the hole 663 of the diffuser 661 is discharged in the form of air bubbles to generate water flow and are supplied to each separator 655 of the separator frame 65.

Therefore, the suspended solids of the mixed solution filtered on the surfaces of the respective separators 655 not only fall, but also the floating materials of the mixed solution are prevented from sticking to the separated membranes 655 by the water flow.

Here, to some extent it is possible to prevent the suspended substances filtered or separated from each separator by the air supplied in the air bubble form to generate water flow from the diffuser to each separator of the separator frame. If not used for a long time, the suspended solids adhere to the surface of each separator.

In this case, not only the inflow of the mixed liquid into the separator unit 61 is reduced, but also the suspended solids contained in the mixed liquid cannot be filtered out properly.

Thus, each separator of the separator unit 61 is removed by using the cleaning agent such as sodium hypochlorite (NaOCl) used to remove the separator unit 61 to the outside of the membrane separation tank 60 and to clean it. Chemical cleaning of the 655 removes the suspended substances filtered by the separation membranes 655.

On the other hand, since the mixed liquid in the membrane separation tank 60 is a microorganism, as the organic contaminants contained in the mixed liquid are removed by the microorganisms, the organic contaminant and the suspended solids are removed by the separation membrane unit 61. Treated water is introduced into the treated water tank (70) by the suction pump (90) operated continuously.

In addition, the membrane separation tank 60 is provided with a water level sensor 64, the water level sensor 64 is connected to the water level sensor 33 of the flow rate adjustment tank 30 and the suction pump 90 ) And is installed.

Therefore, the water level sensor 64 detects the mixed liquid level of the membrane separation tank 60 and sends the detected signal to the water level sensor 33 and the suction pump 90, and according to the sent detection signal. The detection sensor 64 operates and stops the raw water pump 31, and also the suction pump 90 is operated and stopped, so that the water level in the membrane separation tank 60 is kept constant.

That is, when the level of the flow control tank 30 is high and the level of the mixed liquid in the membrane separation tank 60 is lowered, the water level sensor 64 detects the detection signal by the water level sensor 33 of the flow control tank 30. As the water level sensor 33 sends a signal to the raw water pump 31, the raw water continues to flow out of the flow adjusting tank 30 and sends a detection signal to the suction pump 90 to feed the suction pump. By stopping the operation of the 90, the treatment water is blocked from flowing into the treatment tank 70 in the membrane separation tank 60.

And, if the water level of the flow rate adjustment tank 30 is low and the mixed liquid level in the membrane separation tank 60 is high, the raw water pump 31 by the water level sensor 33 received the signal detected by the water level sensor 64 Of course, since the suction pump 90 is operated, the treatment water flows into the treatment tank 70 in the membrane separation tank 60.

The treated water introduced into the treated water tank 70 from the membrane separation tank 60 is a water flow phenomenon by the air supplied from the blower 72 together with the disinfectant 71 added to the treated water in the treated water tank 70. As the treated water and the disinfectant 71 are mixed smoothly, the treated water is disinfected.

As described above, the treated water is disinfected and the water level sensor 74 is installed outside the treated water tank 70 and the discharge pump 73 is installed in the treated water tank 70. When the water level is detected by the water level detection sensor 74, the water level is high, the discharge pump 73 is operated to discharge the treated water to the outside of the treatment water tank 70, when the water level is low discharge pump 73 To stop the treatment water is contained in the treatment tank (70).

In addition, since the at least one sludge transfer pump 63 is installed in the membrane separation tank 60, the mixed liquid in the membrane separation tank 60 is introduced into the aeration tank 50 by the sludge transfer pump 63. The introduced mixed solution is removed with organic contaminants by microorganisms in a state of being combined with the raw water passing through the microfiltration screen 40, the mixed solution from which the organic contaminants are removed is introduced into the membrane separation tank (60).

Here, the concentration of microorganisms (MLSS: Mixed Liquor Suspended Solid) present in the mixed solution in the membrane separation tank 60 should be maintained at a constant concentration, and if the concentration of the microorganism exceeds the proper concentration (result by sample collection) The mixed liquid conveyed by the sludge transfer pump 63 is not introduced into the aeration tank 50 by blocking the line sent into the aeration tank 50 through the same and opening the line sent into the sludge concentration storage tank 80. It is introduced into the sludge concentration storage tank 80 without.

Since the blower 82 is installed outside the sludge concentrate storage tank 80, the sludge concentrate storage tank 80 is generated due to the flow of water in the sludge concentrate storage tank 80 by the air intermittently supplied from the blower 82. Sludge contained in the mixed solution introduced into the) is prevented from sinking to the bottom in the sludge concentration storage tank (80) to be fixed.

When the amount of sludge in the sludge concentrate storage tank 80 increases, the sludge is carried out to the outside of the sludge concentrate storage tank 80, and the supernatant of the sludge concentrate storage tank 80 is installed outside the sludge concentrate storage tank 80. It is sent through the sleeve 81 into the flow adjustment tank 30.

This condition continues while the immersion membrane separation system is in operation.

However, such an advanced treatment immersion membrane separation system is excellent for removing suspended solids and organic pollutants by the membrane unit. However, the effluent water quality standards are strengthened. Since phosphorus is not removed sufficiently, there is a problem that the treated water that does not meet the above criteria is discharged.

That is, the membrane unit alone has a limitation in removing nitrogen or phosphorus contained in the waste water, but since it does not completely remove the nitrogen, only nitrification occurs, so that the microorganisms in the water are transformed into a form suitable for absorption. There was also a problem that can not be removed almost because the microorganisms absorb only a small amount.

Therefore, the discharge of treated water containing substances such as nitrogen and phosphorus not only pollutes rivers and soils, but also contaminates animals and plants, and causes many harm to those who consume them, and destroys the natural environment. There were also many problems.

In addition, in order to clean each membrane of the membrane unit, the membrane unit is removed from the membrane separation tank, and the membrane unit is immersed in a container containing the cleaning chemicals, or the membranes are cleaned by using the cleaning chemicals. As the membrane unit has to be put into the membrane separation tank, there is a problem that the work is very cumbersome and inconvenient as well as a separate space for removing and cleaning the membrane unit.

The present invention has been made to solve the above problems, to change the structure of the immersion membrane separation system to prevent condensation of the condensate in the system to increase the treatment efficiency in the waste water by the system Its purpose is to.

In addition, an object of the present invention is to simultaneously remove nitrogen and phosphorus, which are nutrients that can cause eutrophication, along with various suspended substances and organic substances present in the wastewater of the immersion membrane separation system.

In addition, the present invention is to detect the differential pressure generated in each membrane of the membrane unit to supply a cleaning chemical by the detected differential pressure to clean the membrane and the immersion membrane separation system to operate smoothly.

In order to achieve the above object, the present invention is provided with a sedimentation tank, a screen tank, a flow adjustment tank, a microfiltration screen, a treatment water tank, a sludge concentration storage tank is an immersion membrane separation system for filtering and treating the waste water An anaerobic tank installed at an outer side of the microfiltration screen to remove raw materials sent from the microfiltration screen and to remove contaminants contained in the mixed solution mixed with the raw water and elute phosphorus, and an outer side of the anaerobic tank. Membrane separation tank equipped with a membrane unit having a plurality of separators to remove contaminants and phosphorus substances contained in the mixed solution and to remove suspended solids, and is installed outside the membrane separation tank to remove the contaminants and phosphorus substances by the denitrification reaction. to remove the nitrogen (N ₂₎ and oxygen (O ₂₎ in the nitrate nitrogen contained in the mixed liquid carrying the mixed solution together with the removal of An anoxic tank for conveying to the microfiltration screen through the pump and conveying line, a distribution line connected to the microfiltration screen for dissolving raw water at a predetermined ratio from the microfiltration screen to an anaerobic tank and anoxic tank, and a conveying pump in the anoxic tank It is connected to and is provided with a immersion membrane separation system for advanced wastewater treatment, characterized in that consisting of a conveying line for conveying the mixed liquid in the anoxic tank to the microfiltration screen.

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Hereinafter, a preferred embodiment according to the embodiment of the present invention configured as described above will be described in detail with reference to FIGS. 3 to 9D.

In the immersion membrane separation system, a description of overlapping parts will be omitted or briefly described, and the same reference numerals will be used for the same structure.

Figure 3 is a block diagram showing the immersion membrane separation system for advanced wastewater treatment of the present invention, Figure 4a is a block diagram showing a state in which the phosphorus flocculation means is installed in the immersion membrane separation system for advanced wastewater treatment of the present invention 4B is a configuration diagram showing a state in which a pumping pump is installed in the phosphorus flocculation means of FIG. 4A, and FIG. 5 is a configuration showing a state in which a separation membrane cleaning means is installed in the immersion membrane separation system for advanced wastewater treatment of the present invention. FIG. 6 is a diagram illustrating a state in which a chemical injection pump is installed in the membrane cleaning means of FIG. 5, FIG. 7 is a diagram illustrating a state in which a timer is installed instead of a contact differential pressure gauge in FIG. 6, and FIG. 8 is an embodiment of the present invention. Separation perspective view showing the structure of the membrane unit, Figure 9a is a perspective view showing the structure of the lifting device for lifting the separator unit of the present invention, Figure 9b is a separator unit lifting cabinet of the present invention An exploded perspective view illustrating, Figure 9c is a front view showing an operating state of the present invention, the separation membrane unit lifting device from the front, Figure 9d is a perspective view of a membrane unit lifting device showing a state that is detachable from the supporting portion of the separator frame.

The present invention is provided with a sedimentation tank (10) to prevent the sudden flow of the introduced raw water and to sink the sand or small gravel contained in the raw water while the waste water (raw water) is introduced, Outside the yarn 10, a screen tank 20 having a plurality of screens 21 is provided to filter and remove coarse debris contained in raw water.

On the outside of the screen tank 20, a flow rate adjustment tank 30 is installed to allow a constant flow rate to flow out while coarse contaminants are filtered out, and the flow rate adjustment tank 30 has raw water having a pumping force so as to outflow the raw water. A pump 31, a level sensor 33 for detecting the level of the raw water and a water stirrer 34 for generating the water flow to agitate the raw water is provided.

On the outside of the flow adjustment tank 30, a micro filtration screen 40 is installed to filter out and remove the fine contaminants contained in the raw water sent from the flow adjustment tank 30.

The microfiltration screen 40 is connected to the distribution line 120 for distributing the raw water discharged from the microfiltration screen 40 at a constant rate, and the distribution line 120 outside the microfiltration screen 40. The anaerobic tank in which a portion of the raw water supplied from) is introduced and the introduced raw water and the mixed solution are combined to remove organic substances by the microorganisms in the mixed solution, as well as a mixed solution in which oxygen (O) is removed to elute the phosphorus. 100 is installed.

In the anaerobic tank 100, a water stirrer 101 is installed to generate water flow so that the incoming water and the mixed liquid in the anaerobic tank 100 are smoothly mixed and the microorganisms contained in the mixed liquid are also smoothly mixed. .

On the outside of the anaerobic tank 100, that is, the rear end of the anaerobic tank 100 in the drawing, microorganisms contained in the mixed solution sent from the anaerobic tank 100 are contaminants (organic substances, dissolved substances, etc.) and phosphorus substances (PO ₄ ^3-). ) By not only removing it and removing suspended solids, but also by nitrification reaction with air supplied with ammonia nitrogen (NH ₃ -N) and nitrite nitrogen (NO ₂ -N) present in the mixture. Membrane separation tank 60 is installed so as to be converted into acidic nitrogen (NO ₃ -N).

The oxygen-free tank 110 is provided with a water flow stirrer 112 for generating a water flow so that the mixed liquid sent from the membrane separation tank 60 and the raw water flowing through the distribution line 120 is well mixed.

Meanwhile, the mixed water in the membrane separation tank 60 is introduced into the membrane separation tank 60 by the suction force of the suction pump 90 to filter the suspended substances contained in the mixture solution and to filter the suspended substances. Separation membrane unit 61 for filtering the suspended solids so as to pass through the suction pump 90 through the suction line 91 into the treatment tank 70 is installed.

That is, in the separation membrane unit 61, the mixed liquid is separated into a solid (floating material and microorganism) and a liquid in the process of filtering out and removing the suspended substances and microorganisms contained in the mixed liquid, so that the solid passes through the membrane unit 61. Is removed from the treated water produced.

The membrane unit 61 is put into or taken out of the membrane separation tank 60 while being guided by a guide rail (not shown) fixedly installed in the membrane separation tank 60.

Ammonia nitrogen (NH ₃ -N) and nitrous acid (NO ₂ -N) components contained in the mixed solution flows into the membrane separation tank 60 is supplied with air into the membrane separation tank 60, that is, aerobic After the nitrification process in the state is converted to nitrogen nitrate (NO ₃ -N) component, the mixed liquid containing the converted nitrogen nitrate outside the membrane separation tank 60, that is, sludge concentration storage tank (80) At least one sludge conveying pump 63 having a pumping force is disposed to be discharged to

In addition, the membrane separation tank 60 detects the water level in the membrane separation tank 60, and sends the detected signal to the water level sensor 33 and the suction pump 90 of the flow adjustment tank 30 to the water level The water level sensor 33 controls the operation of the raw water pump 31 by the sensor 33 and simultaneously controls the operation of the suction pump 90 to maintain the level of the mixed liquid in the membrane separation tank 60. ) And a water level sensor 64 connected to the suction pump 90 are installed.

As shown in FIG. 8, the membrane unit 61 for filtering the suspended solids contained in the mixed solution in the membrane separation tank 60 may include a membrane frame 65 having a plurality of membranes 655 and the respective membranes ( And an air diffuser 66 for supplying air generated in the blower 62 to separate the suspended matter attached to the 655 from each separator 655.

The membrane frame 65 is a pair of upper module support in the form of a hollow support (651) coupled to the upper portion of the support portion 651 and a plurality of angles coupled in a square to form an outer periphery. 652, a lower module support 653 in the form of a channel coupled to the lower portion of the support 651, and a high pressure hose which is coupled to the upper module support 652 and extends from the suction pump 90. The membrane unit unit 61 is installed between the connection pipe 654 of the hollow tube and the upper and lower module supports 652 and 653 which are connected to each other to form a passage for discharging the water collected into the upper module support 652 to the outside. A plurality of separation membranes 655 for filtering the suspended solids contained in the mixed solution introduced into, and are connected to both sides of the separation membrane 655 and coupled to the upper, lower module support (652, 653) and the separation membrane 655 The filtered treated water is collected The water pipe 656 is provided.

The diffuser 66 has an air inlet hole for introducing air from the outside and a diffuser tube 661 in which a hollow tube-shaped pipe is coupled in a square shape to form a flow path of air introduced through the air inlet hole. And a plurality of nozzles 662 coupled to the inside of the diffuser 661 to supply air to each of the separation membranes 655, as well as to generate water flow by the supplied air, and each of the nozzles 662. A plurality of holes 663 are formed on the upper surface and through which the air is discharged so that air is generated as air bubbles.

Outside the membrane separation tank 60, there is a separator unit lifting device 160 for lifting the membrane unit 61 so that the membrane unit 61 can be put in and taken out of the membrane separation tank 60. .

As illustrated in FIG. 8, hook parts 657 are coupled to both sides of an upper surface of the membrane frame 1, and at least one hook hole 658 having a predetermined size is formed in the hook part 657. The hook hole 658 may be formed in various shapes such as a circle or a polygon.

As shown in FIGS. 9A to 9D, the separation unit 160 lifting device 160 is located on an upper surface of the separation membrane frame 65 and has a lifting frame 170 having a bottom surface in contact with an upper surface of the separation membrane frame 65. It is installed, and connected to the chain block (1) above the lifting frame 170 and connected to the lifting frame 170 and a plurality of chains (2) installed by the chain block (1) lifting frame ( A hook plate 180 is installed to reciprocate up and down as shown in 170, and both sides of the lifting frame 170 are rotatably coupled to lift the separator frame 65 according to rotation. Lifting ring 190 is installed as well as hooked to the hook portion 657 of the membrane frame 65 is removed.

The hook part 657 is coupled to both sides of the upper surface of the membrane frame 65 by fastening bolts, and the hook part 657 is lifted by a lifting frame 170 to couple and separate the lifting frame 170 and the membrane frame 65. At least one hook hole 658 into which each pair of lifting rings 192 of 190 are inserted / removed is formed.

As shown in FIG. 9A, the lifting frame 170 includes a plurality of channels 171 having a “c” shape in a rectangular shape, and upper and lower corners of the lifting frame 170. The upper and lower guide rollers 172 and 173 are coupled to each other so as to smoothly reciprocate the lifting frame 170 guided along the guide rail.

The upper and lower guide rollers 172 and 173 are positioned at the upper and lower guide rollers 172 and 173 corresponding to each other with respect to the lifting frame 170 as shown in FIG. 9A such that they are perpendicular to each other, that is, crosswise as shown in the drawing. The upper and lower guide rollers 172 and 173 are installed at right angles with respect to the lifting frame 170 so as to be in contact with different inner surfaces of the guide rail, respectively. This is to facilitate the movement.

The upper surface of the lifting frame 170 receives less resistance of the water when the lifting frame 170 descends into the water in the membrane separation tank 60, and a bolt, that is, an I-bolt 3 is optional. A plurality of fastening holes 171a are formed to be fastened to each other, and the chains 2 are respectively coupled to the eye bolts 3 fastened to any one of the fastening holes 171a of the respective fastening holes 171a.

In addition, the hook plate 180 is formed with a plurality of coupling holes 180a to which the eye bolts 3 are fastened, and the eye bolts 3 fastened to the coupling holes 180a to the bottom of the hook plate 180. Is connected to each chain (2) fastened to the lifting frame (170).

That is, one end of the chain 2 is fastened to each eye bolt 3 of the lifting frame 170 and the other end of the chain 2 is fastened to each eye bolt 3 of the hook plate 180. .

A hook portion 181 on which the hook 1a of the chain block 1 is hooked is coupled to the hook plate 180 to lift the hook plate 180 and the lifting frame 170.

As shown in Figure 9a and 9b, the lifting ring 190 is rotatably coupled to the rotation shaft 191 on both sides in the lifting frame 170, the separation membrane on both sides of each of the rotation shaft 191 In order to lift the frame 65 by the membrane frame lifting device, a pair of lifting hooks 192 are coupled to or removed from the hook part 657 of the separator frame 65 while rotating about the rotary shaft 191. The lifting ring 192 of one of the pair of lifting rings 192 coupled to each of the rotating shafts 191 is moved by a force transmitted from the outside of each of the pair of lifting rings 192. Tension chains (193) for controlling rotation are connected to each other, and the pair of lifting rings (192) between the movement of the tension chain (193), that is, by adjusting the tension chain (193) As long as the hook portion 657 of the membrane frame 65 There is a connection of member 194 to interconnect the lift ring 192 of the pair of coupling the lift ring 192 of the pair in order to make or take off the lift ring 192 to rotate at the same time.

Both ends of the rotary shafts 191 are coupled to the inner surface of the lifting frame 170 on the side of the channel 171 of the long side so that the bearing 195 is smoothly rotated.

One end of each tension chain 193 is connected to a pair of lifting hooks 192, respectively, and the other end of each tension chain 193 is connected to a hook portion (not shown) outside the membrane separation tank 60. Therefore, the pair of lifting hooks 192 are rotated in the direction of the arrow as shown in FIG. 9D according to the control of pulling or releasing the tension chain 193 from the outside of the membrane separation vessel 60.

On the other hand, as shown in Figure 9d when the external force is applied to pull the tension chain 193, each pair of lifting ring 192 is removed from each hook hole 658 of each hook portion 657, respectively (Solid line), when the external force is removed, the pair of lifting hooks 192 are rotated about the rotation shaft 191 by their own load to the hook hole 658 of each hook portion 657. The center of gravity of each of the pair of lifting hooks 192 is located at the bottom so as to be walked (dotted).

The lifting frame 170 and the lifting ring portion 190 that enter the membrane separation tank 60, that is, the material of each component of the membrane frame lifting device is formed of a stainless material that is light and does not rust in water.

On the outside of the membrane separation tank 60, that is, the rear end of the membrane separation tank 60 in the drawing, the mixed liquid sent from the membrane separation tank 60 and the microfiltration screen 40 are discharged from the inside of the distribution line 120. An anoxic tank 110 in which a mixed solution is mixed with raw water sent while flowing, separates and removes nitrogen (N ₂ ) and oxygen (O ₂ ) from nitrate nitrogen contained in the mixed solution by denitrification. ) Is installed.

The anoxic tank 110 is provided with a water stirrer 112 for generating a water stream so that the mixture of the mixed liquid in the anoxic tank 110 and the mixed liquid sent from the membrane separation tank 60 and the denitrification reaction of the mixed liquid are performed smoothly. In the anoxic tank 110, a conveying pump 111 having a pumping force is provided to convey the mixed liquid in the anoxic tank 110 to the microfiltration screen 40.

The conveying pump 111 has a conveying line 160 for forming a flow path of the mixed liquid to be pumped to send the mixed liquid in the anoxic tank 110 pumped by the pumping force of the conveying pump 111 to the microfiltration screen 40. The connection is installed.

The mixed liquid sent to the microfiltration screen 40 through the conveying line 160 passes through the microfiltration screen 40 together with the raw water sent from the flow adjusting tank 30, and once again, fine impurities contained in the mixed solution are filtered out. After being introduced into the anaerobic tank 100 and the anaerobic tank 110 through the distribution line 120.

The outside of the membrane separation tank 60 to react with and coagulate with the phosphorus material (PO ₄ ^3- ) to remove the phosphorus material (PO ₄ ^3- ) contained in the mixed solution in the membrane separation tank (60). The condensing means 140 is further provided.

As illustrated in FIG. 4A, the phosphorescent means 140 includes a phosphorus substance (PO ₄ ^3-3 ) contained in the mixed solution in the membrane separation tank 60 on the outside of the membrane separation tank 60. A coagulant chemical tank 141 is installed to send the coagulant so that the coagulant reacts with the phosphorus substance to remove the coagulant and mix the coagulant into the mixed solution of the membrane separation tank 60. The coagulant chemical tank 141 is provided with a coagulant flow path line 142 which forms a flow path of the coagulant so as to supply and block the coagulant into the membrane separation tank 60.

The aggregated coagulant and phosphorus solidify as the phosphorescent substances (PO ₄ ^3- ) are agglomerated with the coagulant sent from the coagulant chemical tank 141 into the membrane separation tank 60. As the flocculant, agglomeration with a phosphorus substance, that is, FeCl ₃ or Al ₂ (SO ₄ ) _3, etc., which are easily aggregated with each other, may be used. You may use it.

The coagulant flow path 142 is provided with a coagulant open / close valve 143 that is opened and closed to supply and block the coagulant chemical tank 141 from the coagulant chemical tank 141 through the coagulant flow line 142 into the membrane separation tank 60 in a natural flow manner. .

In addition, the coagulant flow line 142 is provided with a coagulant pumping pump 144 forcibly pumping the coagulant to send the coagulant in the coagulant chemical tank 141 into the membrane separation tank 60 as shown in FIG. It is.

On the other hand, the outside of the membrane separation tank (60) detects the differential pressure due to the suspended substances filtered through the respective membranes (655) of the membrane unit (65) and by using the cleaning chemicals by the detected differential pressure of the respective membranes ( 655 is provided with a membrane cleaning means 150 for cleaning.

The membrane cleaning means 150 supplies the cleaning chemicals manually and automatically to each membrane 655 of the membrane unit 61.

The membrane cleaning means 150 for manually supplying cleaning chemicals to the respective membranes 655 is a membrane unit 61 of the membrane separation tank 60 outside the membrane separation tank 60 as shown in FIG. 5. A cleaning chemicals storage tank 151 containing the cleaning chemicals is installed to supply cleaning chemicals to each of the separation membranes 655 installed in the separation membranes 655, and one end of the cleaning chemicals storage tank 151 is connected to the cleaning chemicals storage tank 151. The cleaning chemicals supply line 152 is connected to form a flow path of the cleaning chemicals, and each of the floating substances contained in the mixed solution is filtered at a predetermined position of the suction line 91 connected to the separator unit 61. Depending on the degree of suspended solids filtered by the separator 655, that is, when the mixed liquid passes through the separator 655 of the separator unit 61, the separator 655 may be blocked. With detecting differential pressure According to the said differential pressure sensing differential pressure gauge has a contact 153 for controlling the operation or absence of the suction pump 90 is installed. The contact differential pressure gauge 153 stops the operation of the suction pump 90 when the differential pressure of each separator 655 is high, and operates the suction pump 90 when the differential pressure is low.

The cleaning chemicals use sodium hypochlorite (NaOCl) a lot, and use the cleaning chemical diluted with a certain concentration by mixing water with sodium hypochlorite as the stock solution.

In addition, the suction line 91 is connected to the contact differential pressure gauge 153, and the suction line 91 is connected to the detection signal of the contact differential pressure gauge 153 to control whether the treated water flows from the separator unit 61 to the suction pump 90. The first electric valve 154 is opened and closed along the contact, and is connected to the contact pressure differential pressure gauge 153 and the cleaning chemical supply line 152 is connected to each of the membrane unit 61 from the cleaning chemical supply tank 151. A second electric valve 155 is installed to open and close according to a detection signal of the contact differential pressure gauge 153 to control the supply of cleaning chemicals to the separation membrane 655.

In other words, when the treated water flows into the suction pump 90, that is, the treatment tank 70, by the signal detected by the contact differential pressure gauge 153, the first electric valve 154 is opened and the When the second electric valve 155 is closed, the treated water flows into the treated water tank 70 through the suction line 91, and when the cleaning chemical is supplied from the cleaning chemical storage tank 151 to the separator unit 61. The first electric valve 154 is closed and the second electric valve 155 is opened, and the cleaning chemical is supplied to the separator unit 61 through the cleaning chemical supply line 152.

The cleaning chemical storage tank 151 is provided with a level switch 156 for sensing the level of the cleaning chemical and controlling the opening and closing of the first and second electric valves 154 and 155 according to the cleaning chemical level.

Meanwhile, the cleaning chemical supply line 152 is forcibly pumped with cleaning chemicals supplied from the cleaning chemical storage tank 151 to each of the separation membranes 655 of the separation membrane unit 61 as shown in FIG. A chemical injection pump 157 is formed to generate a pumping force so that the membrane unit 61 can be easily and smoothly supplied.

That is, in order to supply the cleaning chemicals to the separator unit 61 in a free-flowing manner as shown in FIG. 5, without supplying the chemical injection pump 157, the cleaning chemicals are forcibly pumped to supply the cleaning chemicals more smoothly. If you want to do so, the chemical injection pump 157 may be installed in the cleaning chemical supply line 152 as shown in FIG. This can be variously changed according to the installation position or space of the cleaning chemicals storage tank 151 and the user's design or the purpose and effect of the pump.

Meanwhile, as shown in FIG. 7, a timer 158 is installed in the suction line 91 to repeatedly open and close the first and second electric valves 154 and 155 for a predetermined time instead of the contact differential pressure gauge 153. That is, as the timer 158 opens and closes the suction line 91 and the cleaning chemical supply line 152 alternately, when the treated water flows through the suction line 91, the cleaning chemical does not flow, and on the contrary, the cleaning chemical supply line When the cleaning chemical flows through 152, the treated water does not flow. As the first and second electric valves 154 and 155 are opened and closed according to the operation of the timer 158 as described above, the flow of the treated water and the cleaning chemical is controlled by the suction line 91 and the cleaning chemical supply line 152. .

In addition, the suction line 91 may be provided with a PLC program part programmed to periodically open and close the first and second electric valves 154 and 155 instead of the contact differential pressure gauge 153 or the timer 158.

Here, the contact differential pressure gauge 153, the timer 158, and the PLC program part, according to the purpose or use of the immersion membrane separation system for advanced sewage and wastewater treatment, and the request of the purchaser, the contact differential pressure gauge 153, the timer 158, and the PLC Any one can be selected from PROGRAM.

In one embodiment of the immersion membrane separation system for advanced wastewater treatment, the phosphorus agglomeration means 140, the membrane cleaning means 150, and the membrane unit lifting device 160 are all installed, only partially installed, or not installed at all. It may not be, but it can be installed in various ways depending on the purpose of use, purpose and installation space of the immersion membrane separation system for advanced wastewater treatment.

10 is another embodiment of the present invention, the immersion membrane separation system for advanced wastewater treatment, in which the anaerobic tank 100 and the anaerobic tank 110 are removed in one embodiment, the immersion tank 10 and the screen tank ( 20) and the flow adjustment tank 30 and the microfiltration screen 40 is installed, the raw water passing through the microfiltration screen 40 is introduced through the distribution line 120 is contaminated by the microorganisms (organic materials, Membrane separation aeration tank 60 to remove dissolved substances, etc.), suspended solids, phosphorus substances, ammonia nitrogen and nitrite nitrogen components, and the membrane separation aeration tank 60 is provided in the separation membrane shown in one embodiment. The unit 61 and the sludge transfer pump 63 are provided.

In addition, a treatment water tank (70) through which the treated water is sent in a clean state while passing through the membrane unit (61) of the membrane separation tank (60) is provided, and the membrane unit (61) of the membrane separation tank (60) and A suction line 91 for connecting the treatment tank 70 is provided, and a suction pump 90 for generating suction force is installed in the suction line 91.

Then, a sludge concentration storage tank 80 in which the sludge pumped by the sludge conveying pump 63 is contained in the membrane separation tank 60.

The operation of the present invention configured as described above is as follows.

First, the waste water (raw water) is introduced into the sedimentation tank 10 so that the sand or small gravel included in the raw water sinks, and the raw water is introduced into the screen tank 20 to each screen 21. Into the flow rate adjustment tank 30 in a state in which the coarse contaminant is filtered and removed while passing through), and when the water level detection sensor 33 of the flow adjustment tank 30 detects the water level, the raw water pump 31 according to the detected signal. While the operation and stop is a constant flow rate from the flow rate adjustment tank 30 to the outside and shut off.

At this time, since the water flow stirrer 34 is provided in the flow rate adjustment tank 30, the raw water in the flow rate adjustment tank 30 is stirred by which the water flow phenomenon occurs.

On the other hand, the raw water flowing out of the flow adjustment tank 30 is passed through the microfiltration screen 40, the fine contaminants contained in the raw water is filtered, the raw water filtered the fine contaminants are introduced into the distribution line 120 flows.

Part of the raw water flowing through the distribution line 120 is introduced into the anaerobic tank 100, the remaining raw water is introduced into the anaerobic tank 110, the raw water flowing through the distribution line 120 is anaerobic tank 100 at a constant ratio And split into an anaerobic tank 110.

The raw water introduced into the anaerobic tank 100 is combined with the mixed liquid contained in the anaerobic tank 100, that is, the mixed liquid mixed with the raw water and the microorganism, and at this time, the water flow phenomenon generated by the water agitator 101 in the anaerobic tank 100 Raw water introduced by and mixed solution is mixed smoothly.

As the microorganisms are present in the mixed solution in the anaerobic tank 100, the microorganisms eat and remove contaminants (organic substances, dissolved substances, etc.) and suspended solids contained in the incoming raw water, and at the same time, phosphorus-containing substances contained in the raw water ( PO ₄ ^3- ) will elute under anaerobic conditions.

On the other hand, in order to maintain the appropriate microbial concentration in the mixed solution in the anaerobic tank 100 by the pumping force of the conveying pump 111 installed in the anoxic tank 110, the mixed liquid in the anaerobic tank 110 through the anaerobic tank (transfer line 130) As it is introduced into the 100) to maintain the appropriate microbial concentration in the mixed solution in the anaerobic tank (100).

At this time, the mixed liquid conveyed from the anaerobic tank 110 to the anaerobic tank 100 through the conveying line 130 passes through the microfiltration screen 40 once more to remove the contaminants contained in the mixed liquid being conveyed. Flows into (100).

As described above, the organic contaminant is removed in the anaerobic tank 100 and the mixed solution in which the phosphorus component is eluted is introduced into the membrane separation tank 60, and the mixed solution in the membrane separation tank 60 is contaminated (organic substance, dissolved substance). Etc.), suspended solids and phosphorus substances (PO ₄ ^3- ), ammonia nitrogen (NH ₃ -N), and nitrite nitrogen (NO ₂ -N).

The contaminants (organic substances, dissolved substances, etc.) are consumed and removed as the microorganisms are eaten as the food of the microorganisms contained in the mixed solution, and the suspended solids are disposed in the membrane separation tank 60. Filtered and removed while passing through.

In addition, the ammonia nitrogen (NH ₃ -N), nitrite nitrogen (NO ₂ -N) components are nitrification (Nitrification) process by the air sent from the blower 62 for supplying air into the membrane separation tank (60) Through the conversion to nitrate nitrogen (NO ₃ -N) component.

In addition, the phosphorus substance (PO ₄ ^3- ) included in the mixed solution in the membrane separation tank 60 is removed in water as the microorganisms contained in the mixed solution are excessively ingested.

At this time, when there is a large amount of phosphorus substance in the mixed solution in the membrane separation tank 60 and is not properly treated biologically, a phosphorus flocculant for coagulating the phosphorus substance is added by reacting with the phosphorus substance (PO ₄ ^3- ). .

In order to inject the phosphorus flocculant, as shown in Figure 4a, a separate phosphorus flocculating means 140 is provided.

That is, since the phosphorus substance is generally present in the form of PO ₄ ^3- in the mixed solution in the membrane separation tank 60, in order to aggregate the phosphorus substance, the flocculant storage tank 141 installed outside the membrane separation tank 60. The flocculant contained therein should be supplied into the membrane separation tank 60.

To this end, the coagulant open / close valve 143 installed in the coagulant flow line 142 connected to the coagulant storage tank 141 is opened, and the coagulant in the coagulant storage tank 141 flows along the coagulant flow path 142 to freely separate the membrane. Into the aerobic tank 60.

Then, as the phosphorus substance and the coagulant react and solidify and solidify with each other, the solidified phosphorus component sinks to the bottom in the membrane separation tank 60.

At this time, if the phosphorus substance is agglomerated to some extent in the mixed liquid in the membrane separation tank 60, the flocculation agent is blocked by the coagulant opening / closing valve 143 to block the coagulant from the flocculant storage tank 141 into the membrane separation tank 60. do.

Here, when the immersion membrane separation system for advanced wastewater treatment is used for a long time, the concentration in the membrane separation tank 60, that is, the concentration of aggregated phosphorus and microorganisms (MLSS) increases, and the membrane separation is performed. In order to maintain a constant concentration of the aeration tank 60 (5,000 ~ 12,000mg / l) by operating the sludge transfer pump 63 installed in the membrane separation aeration tank 60 solidified phosphorus component in the membrane separation aeration tank 60 The mixed liquid containing the prepared material and sludge is sent to the sludge concentration storage tank (80).

As a coagulant to aggregate the phosphorus substance, FeCl ₃ or Al ₂ (SO ₄ ) ₃ , which is a component that is easily aggregated with the phosphorus substance, is used. Any thing may be used as long as it aggregates.

On the other hand, in order to forcibly pump the coagulant from the coagulant storage tank 141 into the membrane separation tank 60 so that the phosphorus component and the coagulant reacts to solidify in the coagulant flow line 142 as shown in Figure 4b Coagulant pumping pump 144 is provided.

That is, when the coagulant pumping pump 144 is operated simultaneously with opening the coagulant open / close valve 143 to supply the coagulant into the membrane separation tank 60, the coagulant in the coagulant storage tank 141 is the coagulant pumping pump 144. It is forcibly supplied into the membrane separation tank 60 by the pumping force and reacts with and coagulates with the phosphorus substance. When the aggregation of the phosphorus substance is completed, the coagulant pumping pump 144 is stopped and the coagulant open / close valve 143 is stopped. As it is closed, the flocculant is blocked from being supplied into the membrane separation tank 60 from the flocculant storage tank 141.

On the other hand, in the membrane separation aerobic tank 60 in a Nitrogen ammonia (NH ₃ -N), Nitrite Nitrogen while (NO ₂ -N) component is mounted a nitride (Nitrification) process of nitrate (NO ₃ -N) component The converted mixed liquid is introduced into the anaerobic tank 110.

The mixed solution introduced into the anoxic tank 110 is discharged from the microfiltration screen 40 and combined with the raw water sent while flowing in the distribution line 120, so that the denitrification reaction occurs by the denitrification microorganisms in the anoxic tank 110. Nitrogen (N ₂ ) and oxygen (O ₂ ) are separated from the nitrate nitrogen contained in the mixed solution, and the separated nitrogen and oxygen are released into the atmosphere.

At this time, the organic carbon source required for the denitrification microorganism is to be appropriate from the organic material in the raw water flowing through the distribution line 120.

In addition, the mixed liquid flowing from the membrane separation tank 60 and the raw water flowing from the distribution line 120 may be smoothly mixed as well as installed in the anoxic tank 110 by the water flow stirrer 112 installed in the anoxic tank 110. By the pumping of the conveying pump 111, the sludge contained in the mixed liquid in the oxygen-free tank 110 is sent to the microfiltration screen 40 through the conveying line 130 with the mixed liquid.

The mixed liquid sent to the microfiltration screen 40 passes through the microfiltration screen 40 together with the raw water sent from the flow adjusting tank 30 and the anaerobic tank 100 and the anaerobic tank through the distribution line 120 in a state where fine contaminants are filtered. It is distributed at a constant rate to 110 and flows in.

Meanwhile, at least one separation membrane unit 61 installed in the membrane separation tank 60 filters out suspended substances in the membrane separation tank 60, that is, the membrane unit 61 outside the membrane separation tank 60. Since the suction pump 90 is installed, the mixed liquid in the membrane separation tank 60 is introduced into the membrane unit 61 by the suction force generated by the operation of the suction pump 90, thereby separating the membrane unit 61. As it passes through, the suspended solids are filtered out.

In other words, in the separation unit 61, the mixed liquid in the membrane separation tank 60 is introduced into the separation membrane frame 65 of the separation unit 61 by the suction force of the suction pump 90, and the introduced mixed liquid is separated from the separation membrane. As the floating material is filtered while passing through each of the separation membranes 655 of the frame 65, the treated water from which the suspended material is filtered is collected into each collection pipe 656.

The treated water collected into the respective collection pipes 656 flows into the pair of upper module supports 652 by the suction force generated as the suction pump 90 continues to operate, and flows through the outlet of the connection pipe 654. It is discharged from the membrane unit 61 through the suction pump 90 is introduced into the treatment tank (70).

At this time, the air generated from the blower 62 is sent from the diffuser 66 installed at the lower part of the membrane frame 65 to flow into the diffuser 661 of the diffuser 66, and the introduced air Each nozzle 662 through the hole 663 of the diffuser 661 is discharged in the form of air bubbles to generate water flow and are supplied to each separator 655 of the separator frame 65.

Therefore, the suspended solids of the mixed solution filtered on the surfaces of the respective separators 655 not only fall, but also the floating materials of the mixed solution are prevented from sticking to the separated membranes 655 by the water flow.

Here, to some extent it is possible to prevent the suspended substances filtered or separated from each separator by the air supplied in the air bubble form to generate water flow from the diffuser to each separator of the separator frame. If not used for a long time, the suspended solids adhere to the surface of each separator.

In this case, not only the inflow of the mixed liquid into the separator unit 61 is reduced, but also the suspended solids contained in the mixed liquid cannot be filtered out properly.

Thus, each separator of the separator unit 61 is removed by using the cleaning agent such as sodium hypochlorite (NaOCl) used to remove the separator unit 61 to the outside of the membrane separation tank 60 and to clean it. Chemical cleaning of the 655 removes the suspended substances filtered by the separation membranes 655.

At this time, in order to lift the membrane unit 61 from the membrane separation tank 60, a separate membrane unit lifting device 160 should be provided.

9A to 9D, the separator unit lifting device 160 includes a plurality of fastening holes selected from the respective fastening holes 171a formed on an upper surface of the lifting frame 170 of the separator unit lifting device 160 ( Each of the eye bolts 3 is fastened to 171a, and then one end of the chain 2 is connected to each of the eye bolts 3.

At the same time, the hook 1a of the chain block 1 is hooked to the hook portion 181 coupled to the upper surface of the hook plate 180, and to each coupling hole 180a of the hooked hook plate 180. Since the other ends of the chain 2 are connected to the respective eye bolts 3 after the eye bolts 3 are fastened respectively, the lifting frame 170 and the hook plate 180 are mutually connected by the respective chains 2. Connected.

In this state, as the chain block 1 is operated (forward direction), the hook plate 180 rises above the membrane separation tank 60 and each chain 2 connected to the hook plate 180 is connected. While lifting, the lifting frame 170 also rises upward along the hook plate 180.

Then, the membrane frame lifting device 160 is moved above the membrane unit 61 in the membrane separation tank 60, and then the chain block 1 is operated in the opposite direction (reverse direction). The hook plate 180 and the lifting frame 17 are lowered downward.

When the bottom surface of the lifting frame 170 descending downward and the top surface of the membrane unit 61 come into contact with each other, the operation of the chain block 1 is stopped.

At this time, since the tension chain 193 is in a stretched state outside the membrane separation vessel 60, when one side end of the tension chain 193 is pulled and released, the pair of lifting rings 192 are tensioned. It is rotated about the rotating shaft 191 by the chain 192 is caught by each hook portion 657 coupled by fastening bolts on both sides of the upper surface of the separator unit 61.

That is, the pair of lifting rings 192 are pulled by the tension chain 193 to be pulled and rotated to the inside of the lifting frame 170 as shown in the solid line of FIG. 9D, and then the pair is lifted by the tension chain 193. The lifting ring 192 is rotated to the outside of the lifting frame 170 as shown by the dotted line of Figure 9d is inserted into each of the hook holes 658 of each hook portion 657 and fastened.

Here, as the center of gravity of the pair of lifting rings 192 is located at the bottom, the pair of lifting rings 192 are lifted by the tension chain 193 to lift the frame about the rotation axis 191. The pair of lifting hooks 192 are rotated to the outside of the 170 so that each pair of lifting hooks 192 is inserted into each hook hole 658 of each hook portion 657 coupled to both sides of the upper surface of the separator unit 61. .

 As described above, a pair of lifting hooks 192 are hooked to each hook portion 657 of the separator unit 61, and in this state, the chain block 1 is operated in a forward direction to lift the lifting frame 170. When lifted), the membrane unit 61 is lifted along the lifting frame 170 to be lifted.

The membrane unit 61 is moved out of the guide rail while being guided by the guide rail by the lifting frame 170 moving upward, and when the lifting frame 170 is raised higher, the membrane unit 61 The membrane separation tank 60 is taken out.

At this time, the separation unit 61 and the lifting frame 170 is moved while being guided by the guide rail formed in the 'b' shape, that is, the upper and lower guide rollers 172 and 173 at each corner of the lifting frame 170. Since each of the upper guide rollers 172 and 173 are not only in contact with the respective inner surfaces of the guide rails which are vertically oriented, but also by the lifting frame 170 which is moved up and down, respectively, As the guide rollers 172 and 173 rotate smoothly along the other inner surface of the guide rail, the lifting frame 170 smoothly reciprocates.

Therefore, the lifting frame 170 and the separator unit 61 are smoothly pulled out of the guide rail without being shaken by the guide rails and the upper and lower guide rollers 172 and 173.

The membrane unit 61, which is pulled out of the guide rail and taken out to the outside of the membrane separation tank 60, moves to a space that is made for repair and cleaning on the outside of the membrane separation tank 60, that is, the chain block ( Operate 1) in the reverse direction to lower the membrane unit 61 on the floor.

Then, the membrane unit 61 is repaired or cleaned, or the membrane unit 61 is put in a container containing a cleaning chemical such as sodium hypochlorite (NaOCl) to chemically clean each membrane 655 of the membrane unit 61. The suspended substances filtered by each separator 655 are removed.

When the repair, cleaning and cleaning of each membrane 655 are completed, the membrane unit 61 is put back into the membrane separation tank 60 by the chain block 1 and the lifting frame 170 in the same manner as described above. Try to perform the original function.

That is, when the insertion of the membrane unit 61 into the guide rail in the membrane separation tank 60 is completed, the membrane frame lifting device 160 should be taken out of the membrane separation tank 60.

To do so, each pair of lifting hooks 192, which are hooked to the hook portion 657 of the membrane unit 61, must be removed from the hook hole 658 of the hook portion 657, that is, each pair When the tension chain 193 fastened to the lifting ring 192 is pulled from the outside of the membrane separation tank 60, the pair of lifting rings 192 may be connected to the solid line in FIG. 9D about the rotating shaft 191. As the inside of the lifting frame 170 is rotated as described above, each of the pair of lifting rings 192 is detached from the hook hole 658 of the hook part 657, respectively.

Then, when the chain block 1 is operated in the forward direction, the hook plate 180 is raised upwards, and the lifting frame 170 separated from the separator unit 61 is also raised upward.

Then, when the immersion membrane separation activated sludge system is operated while the membrane unit 61 is located in the guide rail fixedly installed in the membrane separation tank 60, the contaminants of the waste water are separated by the membrane unit 61. Filtered and purified.

Here, when the operation of the membrane frame lifting device 160 is briefly arranged, the lifting frame 170 is reciprocated in the vertical direction along with the operation of the chain block 1, and the tension chain 193 is pulled and placed. As a result of each pair of lifting rings 192 are rotated to be caught or removed by the hook portion 657 of the membrane unit 61, the lifting frame 170 and the membrane unit 61 are coupled and separated, thereby Accordingly, the membrane unit 61 is taken out or put into the membrane separation tank 60 by the lifting frame 170.

As described above, there is also a method of removing the membrane unit 61 from the membrane separation tank 60 to clean each membrane 655. However, as shown in FIG. 5, a cleaning chemical is applied to each membrane 655 of the membrane unit 61. There is also an automatic feeding method.

That is, as shown in FIG. 5, when the contamination of each of the separation membranes 655 is intensified by the suspended substances that are filtered by the separation membranes 655 of the separation membrane unit 61, the occlusion phenomenon occurs. The contact differential pressure gauge 153 detects the differential pressure generated in the separation membrane 655.

According to the detected differential pressure, the contact differential pressure gauge 153 controls the opening and closing of the first electric valve 154 of the suction line 91 and the second electric valve 155 of the cleaning chemical supply line 152.

That is, when the differential pressure sensed by the contact differential pressure gauge 153 does not exceed a predetermined differential pressure, the second electric valve 155 is closed and the first electric valve 154 is opened to obtain a mixed liquid by the suction force of the suction pump 90. The treated water introduced into the membrane unit 61 and treated in a clean state flows into the suction line 91 to be introduced into the treated water tank 70.

In addition, when the predetermined differential pressure is exceeded, each of the separation membranes 655 should be cleaned to remove suspended substances from the surface of each of the separation membranes 655.

In order to clean the separation membranes 655, the first electric valve 154 is closed and the second electric valve 155 is opened in accordance with a signal sensed and transmitted by the contact pressure differential pressure gauge 153, and the suction pump is also opened. The drive of the 90 and the brower 62 is also stopped.

Therefore, not only the treatment water flows into the suction line 91 but also the cleaning chemical contained in the cleaning chemical storage tank 151 installed on the outside of the membrane separation tank 60 by the opened second electric valve 155. The cleaning chemicals supply line 152 flows through the second electric valve 155 and is supplied into the membrane unit 61.

The cleaning chemicals supplied to the membrane unit 61 are passed through the upper module support 652 and the collecting pipe 656 of the membrane frame 65 to each of the membranes 655, and the cleaning chemicals of the cleaning chemicals are sent to the membranes. The separation membrane 655 is cleaned because the separation membrane 655 is removed while falling on the floating material adhering to the surface of each separation membrane 655.

On the other hand, the cleaning chemicals are supplied in a natural flow method by the second electric valve 155 that is opened and closed from the cleaning chemicals storage tank 151 to the membrane unit 61, or the cleaning chemicals supply line 120 is shown in FIG. As in the chemical injection pump 157 is installed by the pumping force of the chemical injection pump 157 may be forced to supply the cleaning chemical to the membrane unit (61). This can be variously selected depending on the specifications of the product, the purpose of the work, and the effects.

As such, when the cleaning of each of the separation membranes 655 is completed or the cleaning chemicals in the cleaning chemical storage tank 151 are at a low water level, the second electric valve 155 is closed to block the cleaning chemical supply line 152. At the same time, the suction valve 91 is opened by opening the first electric valve 154 so that the suction pump 90 and the blower 62 are operated, and the immersion membrane separation system for advanced wastewater treatment is operated. The waste water is treated to produce clean treated water.

Here, the opening and closing of the first and second electric valves 154 and 155 by the low water level of the cleaning chemical storage tank 151 is performed by the level switch 156 installed in the cleaning chemical storage tank 151. Since the level switch 156 is installed in the storage tank 151, the level switch 156 detects the level of the cleaning chemical in the cleaning chemical storage tank 151.

That is, when the cleaning chemicals are supplied from the cleaning chemical storage tank 151 to each separation membrane 655 to clean the separation membranes 655, the level of the cleaning chemicals in the cleaning chemicals storage tank 151 is lowered. The level switch 156 senses the first and second electric valves 154 and 155 and sends the detected signal to open and close the first and second electric valves 154 and 155, as well as the suction pump 90 and the blower 62. The sensing signal is also sent to control the operation of the suction pump 90 and the blower 62.

Here, the supply of the cleaning chemicals to each of the separation membranes 655 of the membrane unit 61 may be supplied in a natural flow manner as shown in FIG. 5, or the chemical injection may be provided in the cleaning chemicals supply line 152 as shown in FIG. 6. The pump 157 may be installed and forcibly supplied, which may be variously installed according to the purpose and use of the immersion membrane separation system for advanced wastewater treatment, and specifications required by the user.

On the other hand, to detect the differential pressure generated in each of the separation membrane 655 of the membrane unit 61 may use a contact differential pressure gauge 153 as shown in Figure 5 and 6, or contact differential pressure gauge 153 as in Figure 7 Instead, the timer 158 and the programmable PLC program unit may be installed to periodically open and close the first and second electric valves 154 and 155 for a predetermined time. This is the contact differential pressure gauge 153 or the timer 158 and the PLC program unit. -Any of the contact differential pressure gauge 153, timer 158, PLC program, etc. can be selected and used according to the purpose or use of the immersion membrane separation system for advanced wastewater treatment and the request of the orderer.

As described above, due to the suction force of the suction pump 90, the mixed liquid in the membrane unit 61 passes through each of the membranes 655 to produce clean water treated with suspended solids, and the treated water continues to operate. The suction pump 90 is collected and flows into the water collecting pipe 656 of the membrane unit 61, and then flows into the pair of upper module support 652 of the membrane frame 65 to be coupled to the upper module support 652. It is discharged to the outside of the separator unit 61 through the connection pipe 654 and flows into the suction line 91 connected to the connection pipe 654 and passes through the suction pump 90 to be introduced into the treatment tank 70. .

In addition, the membrane separation tank 60 is provided with a water level sensor 64, the water level sensor 64 is connected to the water level sensor 33 of the flow rate adjustment tank 30 and the suction pump 90 ) And is installed.

Therefore, the water level sensor 64 detects the mixed liquid level of the membrane separation tank 60 and sends the detected signal to the water level sensor 33 and the suction pump 90, and according to the sent detection signal. The detection sensor 64 operates and stops the raw water pump 31, and also the suction pump 90 is operated and stopped, so that the water level in the membrane separation tank 60 is kept constant.

That is, when the level of the flow control tank 30 is high and the level of the mixed liquid in the membrane separation tank 60 is lowered, the water level sensor 64 detects the detection signal by the water level sensor 33 of the flow control tank 30. As the water level sensor 33 sends a signal to the raw water pump 31, the raw water continues to flow out of the flow adjusting tank 30 and sends a detection signal to the suction pump 90 to feed the suction pump. By stopping the operation of the 90, the treatment water is blocked from flowing into the treatment tank 70 in the membrane separation tank 60.

And, if the water level of the flow rate adjustment tank 30 is low and the mixed liquid level in the membrane separation tank 60 is high, the raw water pump 31 by the water level sensor 33 received the signal detected by the water level sensor 64 Of course, since the suction pump 90 is operated, the treatment water flows into the treatment tank 70 in the membrane separation tank 60.

The phosphorus flocculation means 140, the membrane cleaning means 150, the membrane unit lifting device 160, etc. are all or partially installed or installed depending on the purpose or use of the immersion membrane separation system for advanced wastewater treatment. You can't.

As described above, although the immersion membrane separation system for advanced wastewater treatment according to the present invention has been described with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings described herein, and the technical scope of the present invention. Of course, various modifications can be made by those skilled in the art.

As described above, the present invention changes the structure of the immersion membrane separation system for advanced wastewater treatment, that is, to install the anaerobic tank, membrane separation aeration tank and anoxic tank and distribute the raw water to the anaerobic tank and anoxic tank in the microfiltration screen and By returning the mixed solution to the microfiltration screen in the anaerobic tank to filter out fine contaminants once more, the contaminants in the system are prevented from being concentrated, and the system has an effect of increasing the treatment efficiency in the waste water.

That is, at the same time, it removes nitrogen and phosphorus, which are nutrients that can cause eutrophication, along with various suspended substances and pollutants (organic substances, dissolved substances, etc.) present in the wastewater of the immersion membrane separation system for advanced wastewater treatment. It has the effect of making it work.

In addition, the membrane separation by having a phosphorus agglomeration means for agglomerating the phosphorus material on the outside of the membrane separation tank to agglomerate the phosphorus material contained in the mixed solution in the membrane separation tank by a coagulant supplied from the phosphorus agglomeration means. Since phosphorus substances are removed more smoothly from the mixed solution in the aerobic tank, there is also an effect of increasing the efficiency of the immersion membrane separation system for advanced wastewater treatment.

In addition, a membrane cleaning means for supplying a cleaning chemical to the outside of the membrane separation tank includes a membrane cleaning means for detecting a differential pressure of each membrane when the membrane is blocked due to suspended substances. By supplying cleaning chemicals to each of the membranes to clean each membrane, there is also an effect to smoothly operate the immersion membrane separation system for advanced wastewater treatment.

As such, as the treatment water is generated in the membrane unit and the cleaning of each membrane is automatically performed, there is no inspection or monitoring regularly, thereby reducing time, manpower loss, and improving work efficiency. There is also an effect of improving the efficiency of the immersion membrane separation system.

By the above-described effects, not only the efficiency of the overall immersion membrane separation system for advanced wastewater treatment can be improved, but also the consumer's reliability of the product is improved.

1 is a block diagram showing a general immersion membrane separation system.

Figure 2 is an exploded perspective view showing a membrane unit configuration of a conventional immersion membrane separation system.

Figure 3 is a block diagram showing the present invention immersion membrane separation system for wastewater treatment.

Figure 4a is a block diagram showing a state in which the phosphorus aggregation means is installed in the immersion membrane separation system for advanced wastewater treatment of the present invention.

Figure 4b is a block diagram showing a state in which the pumping pump is installed in the phosphorescence aggregation means of Figure 4a.

Figure 5 is a block diagram showing a state in which the separation membrane cleaning means is installed in the immersion membrane separation system for advanced wastewater treatment of the present invention.

Figure 6 is a schematic view showing a state in which the chemical injection pump is installed in the membrane cleaning means of FIG.

7 is a configuration diagram showing a state in which a timer is installed in place of the contact differential pressure gauge in FIG.

Figure 8 is an exploded perspective view showing the structure of the separator unit of the present invention.

Figure 9a is a perspective view showing the structure of the lifting device for lifting the separator unit of the present invention.

Figure 9b is an exploded perspective view showing a separator unit lifting device of the present invention.

Figure 9c is a front view showing the operating state of the separator unit lifting device of the present invention from the front.

Figure 9d is a perspective view showing a state in which the separation unit lifting device is detachable to the hook portion of the membrane frame.

10 is another embodiment showing the configuration of the present invention immersion membrane separation system for wastewater advanced treatment.

* Description of the symbols for the main parts of the drawings *

60: membrane separation tank 100: anaerobic tank

110: anoxic tank 120: distribution line

130: conveying line 140: phosphorus aggregation means

150: membrane cleaning means 160: lifting device

Claims (14)

In the immersion type membrane separation system, which is provided with a sedimentation tank, a screen tank, a flow rate adjustment tank, a microfiltration screen, a treatment water tank, and a sludge concentration storage tank, to filter and treat the waste water. An anaerobic tank installed on the outside of the microfiltration screen to remove the contaminants contained in the mixed solution mixed with the raw water and to elute phosphorus, while the raw water sent from the microfiltration screen is introduced; A membrane separation aeration tank installed at an outer side of the anaerobic tank and provided with a separation unit having a plurality of separation membranes to remove contaminants and phosphorus substances contained in the mixed solution and to remove suspended substances; It is installed on the outside of the membrane separation tank to separate and remove nitrogen (N ₂ ) and oxygen (O ₂ ) from the nitrate nitrogen contained in the mixed liquid by denitrification reaction and finely mixed the mixed liquid through the conveying pump and the conveying line An anaerobic bath to be returned to the filtration screen, A distribution line connected to the microfiltration screen for decomposing and introducing raw water into the anaerobic and anaerobic tanks at a predetermined ratio from the microfiltration screen; An immersion membrane separation system for advanced sewage / water treatment, characterized in that it is configured to be connected to a conveying pump in the anoxic tank to convey the mixed liquid in the anoxic tank to a microfiltration screen. The method of claim 1, An immersion membrane separation system for advanced sewage water treatment, characterized in that the outer side of the membrane separation tank is further configured to aggregate phosphorus by reacting with the phosphorus substance contained in the mixed liquid in the membrane separation tank. The method of claim 2, Phosphorus flocculating means is installed on the outside of the membrane separation tank, the coagulant drug tank containing a flocculant to react with the phosphorus material contained in the mixed solution in the membrane separation tank to agglomerate the phosphorus; A coagulant flow path line connected to the chemical tank and forming a flow path of the coagulant to supply a coagulant into the membrane separation tank; And a coagulant open / close valve installed at a predetermined position of the coagulant flow line to open and close the coagulant to supply and block the coagulant from the coagulant chemical tank to a membrane separation tank. The method of claim 3, wherein The flocculent flow line is an immersion type membrane separation system for advanced wastewater treatment, characterized in that a flocculant pumping pump is additionally installed to pump the flocculant from the flocculant chemical tank to the membrane separation tank. The method of claim 1, The membrane immersion membrane further comprises a membrane cleaning means for detecting the differential pressure by the suspended substances filtered through each membrane of the membrane unit and cleaning the membranes with a cleaning agent on the outside of the membrane separation tank. Separation system. The method of claim 5, The membrane cleaning means is installed outside the membrane separation tank and the cleaning chemicals storage tank containing the cleaning chemicals to supply the cleaning chemicals to the membrane unit of the membrane separation tank; A cleaning chemical supply line connected to the cleaning chemical storage tank and having one end connected to a suction line to form a flow path of the cleaning chemical; A contact point installed in a suction line connected to the separator unit to detect a differential pressure generated in each separator by a mixed liquid passing through each separator of the separator unit and to control the operation of the suction pump according to the detected differential pressure With a differential pressure gauge, A first electric valve connected to the contact differential pressure gauge and installed in the suction line and opened / closed according to a detection signal of the contact differential pressure gauge to control the inflow of the treated water from the separator unit to the suction pump; A second electric valve connected to the contact differential pressure gauge and opened / closed according to a detection signal of the contact differential pressure gauge to be installed in the cleaning chemical supply line to control the supply of cleaning chemicals from the cleaning chemical supply tank to the separator unit; It is installed in the cleaning chemical storage tank to detect the level of the cleaning chemicals, and the level switch for controlling the opening and closing of the first and second electric valves in accordance with the cleaning chemicals level, characterized in that the needle for advanced wastewater treatment Knowledge Membrane Separation System. The method of claim 6, An immersion membrane separation system for advanced sewage and wastewater, characterized in that a timer is installed on the suction line to open and close the first and second electric valves repeatedly for a predetermined time instead of the contact differential pressure gauge. The method of claim 6, An immersion membrane separation system for advanced sewage and wastewater, characterized in that a PLC program part programmed to periodically open and close the first and second electric valves is installed in the suction line instead of the contact differential pressure gauge. The method of claim 6, Immersion membrane separation system for advanced wastewater treatment, characterized in that the chemical injection pump is installed in the cleaning chemical supply line to pump the cleaning chemical from the cleaning chemical storage tank to the membrane unit. The method of claim 1, An immersion membrane separation system for advanced sewage / water treatment, characterized in that a membrane unit lifting device is further configured to lift the membrane unit out of the membrane separation tank so as to remove the membrane unit from the membrane separation tank. The method of claim 10, The separator unit lifting device is provided with guide rollers that are positioned on the upper surface of the separator unit and rotated at upper and lower corners to reciprocate, and have a plurality of channels having a “c” shape so as to contact the upper surface of the separator unit. A lifting frame combined in this rectangular shape, A hook plate connected to the chain block above the lifting frame and connected to the lifting frame and a plurality of chains to reciprocate up and down like the lifting frame according to the operation of the chain block; The needle for advanced sewage / wastewater treatment, characterized in that it is coupled to both sides in the lifting frame and is hooked to both sides of the upper surface of the separator unit to lift the separator unit, as well as a lifting hook portion removed. Knowledge Membrane Separation System. The method of claim 11, The lifting ring portion and the rotating shaft rotatably coupled to both sides in the lifting frame, A pair of lifting rings which are coupled to both sides of each of the rotation shafts and have a center of gravity located at a lower portion thereof so as to be attached to and detached from each hook hole of each hook portion having at least one hook hole while rotating about the rotation shaft; A tension chain that is connected to each of the lifting rings of the pair of lifting rings coupled to each of the rotating shafts and moves by the force transmitted from the outside, and adjusts the rotation of the lifting rings; Combined between the pair of lifting rings, the needle for advanced wastewater treatment, characterized in that consisting of a connecting member for connecting the pair of lifting rings to each other so that the lifting ring rotates simultaneously with the movement of the tension chain. Knowledge Membrane Separation System. The method of claim 11, The upper and lower guide roller positions corresponding to each other with respect to the lifting frame are installed to be perpendicular to each other so that the upper and lower guide rollers are rotated in contact with the respective inner surfaces of the respective guide rails. · Submerged membrane separation system for advanced wastewater treatment. delete