KR19990064409A - Combined Purification Apparatus and Method Using Submerged Membrane Separation Process for Advanced Processing - Google Patents

Abstract

The disclosed contents eliminate the difficulties of securing the manufacturing and installation space, actively cope with changes in the flow rate or concentration load, automatic operation is made, and even under low load operating conditions such as nitrogen and phosphorus This is to effectively remove nutrients.

In order to realize this, in the present invention, the raw water is pumped by the raw water pumping means from the flow rate adjusting tanks 10 and 12 from which the raw water filtered by the primary screen tank 20 is collected, and supplied to the anaerobic tank 14. In the anaerobic tank 14, raw water containing microorganisms denitrified under anaerobic and phosphorus-released microorganisms was distributed to the membrane separation filtration tank 16 while the raw water was stirred by the stirring means, and the microorganisms were activated and hollowed in the membrane separation filtration tank 16. Solid-liquid separation is carried out by a membrane unit 42 composed of a desert, suction water treatment by a suction filtration pump 48 is made through a water intake pipe 44 connected to the membrane unit 42, and a discharge tank and a drain pipe It is composed of a structure for discharging the treated water through the 50, the altitude processing further comprises a flow control tank (10) (12) and a control unit 70 for detecting the operating state of each part, controlling and displaying the driving state The merger purifying apparatus using the submerged membrane separation process is provided.

Description

Combined Purification Apparatus and Method Using Submerged Membrane Separation Process for Advanced Processing

The present invention relates to a combined purification apparatus and method using an immersion type membrane separation process for high treatment, and more particularly, a immersion type membrane separation for advanced treatment comprising a mixture of a physical treatment of an immersion type membrane separation process and a biological treatment of an activated sludge process. It relates to a merger purification apparatus and method using the process.

Methods for purifying various wastewater and wastewater include physical treatment methods using screening, sedimentation and sedimentation, flotation, filtration, etc., chemical treatment methods using neutralization, redox, flocculation, adsorption and absorption, and microorganisms. There is a biological treatment method such that the purification treatment is performed according to the culture of.

In particular, the biological treatment method uses aerobic or anaerobic microorganisms to make contaminants contained in wastewater and wastewater in sludge in aeration tanks, and the sludge is solid-liquid separated by gravity precipitation in the final purification step to remove supernatant. Only purified water can be obtained.

The sedimentation status of sludge has a great effect on the water quality, so the concentration of sludge should be measured and managed for frequent water quality management, the dissolved oxygen concentration in the aeration tank should be measured and managed frequently, and the water quality during the purification process should be frequently checked. do.

As a result, the purification process becomes complicated and difficult, and the time required for the purification process is increased, and even fine particles cannot be expected to be settled completely, and the volume of the device is large, thus ensuring space for manufacturing and installation. There were disadvantages such as difficulty.

In order to solve the drawbacks of the prior art, the applicant has disclosed in 1998 Patent Application No. 30199 a device for recycling wastewater and a method for treating high concentration organic wastewater by contact oxidation and immersion hollow fiber precision filtration unit. .

Applicant's contact oxidation and immersion-type hollow fiber precision filtration unit by the present applicant, and the apparatus for purification of high concentration organic wastewater and its method, in addition to the immersion type membrane separation process to form a microbial membrane on the surface of the filter medium to remove the microorganism and wastewater It is a kind of biological contact aeration method and a device that biochemically oxidatively decomposes pollutants in various wastewater and wastewater by contact.

However, in the apparatus and method according to the present applicant, there are disadvantages such as a limitation in removing nutrients such as nitrogen and phosphorus under low load operation conditions, and the present invention has been devised to compensate for this.

That is, the present invention has been made to complement the apparatus and method of recycling wastewater and the method (1998 Patent Application No. 30199, 1998) by the present applicant by contact oxidation and immersion type hollow fiber precision filtration unit, The object of the present invention is to make the purification process easy and simple in a short time, to reduce the difficulty of securing the manufacturing and installation space by miniaturization, and to actively cope with changes in the flow rate or concentration load The present invention seeks to provide an apparatus and method for combined purification using an immersion membrane separation process for advanced processing.

In addition, another object of the present invention, the automatic operation is easy to manage is made, and the advanced processing immersion type membrane separation process for effectively removing nutrients such as nitrogen and phosphorus even under low load operating conditions The present invention aims to provide a method and method for merger purification used.

Figure 1 is a schematic front cross-sectional view for showing the configuration of the merger purification apparatus using an immersion membrane separation process for advanced processing according to the present invention,

Figure 2 is a schematic plan view for showing the configuration of the merger purification apparatus using the immersion membrane separation process for advanced processing according to the present invention,

3 and 4 and 5 is a partial view for showing the configuration of the membrane separation filter applied to the combined purification apparatus using the immersion membrane separation process for advanced processing according to the present invention,

6 is a flow chart of the treatment process of the present invention.

Explanation of symbols on the main parts of the drawings

10, 12: flow adjustment tank 14: anaerobic tank

16: membrane separation filtration tank 18: raw water inlet pipe

20: primary screen tank 26: raw water feed pump

30: secondary screen tank 28: raw water supply pipe

32: fine wood screen 34: stirrer motor

36: rotating shaft 38: stirring blade

40: filtration element 42: membrane unit

44: intake pipe 46: discharge tank

48: suction filtration pump 50: guide rail

52: air pump 54: head pipe

56,58,60: branch pipe 62,64,66: diffuser

70: control unit 72: controller

74,76,78: Water level sensor 80: Display

S1: first stage S2: second stage

S3: third step S4: fourth step

S5: fifth step S6: sixth step

S7: 7th Step

The present invention for realizing this is composed of a pair of pairs of raw water filtered by the primary screen tank and spaced to the opposite side and connected to the lower portion by a pipe, and from one side of the flow adjusting tank to the raw water pumping means. Membrane consisting of an anaerobic tank in which raw water is supplied and stirred by agitation means to denitrify and release phosphorus under anaerobic conditions, and the raw water discharged from the upper hole in the anaerobic tank is filled with activation and hollow fiber membranes. Water separation separating the solid-liquid separation by the unit and returning the raw water containing the settling sludge to the anaerobic tank by a conveying means and the discharge tank built in the upper part of the flow control tank on the other side to have the membrane unit and the drain pipe. Discharge water tank installed on the pipe to discharge the treated water discharged from the membrane unit A suction filtration pump for discharging through the drain pipe, an aeration means for supplying air to the flow regulating tank and the membrane separation filtration tank, and detecting the water level of the flow regulating tank and the membrane separation filtration tank and pumping the raw water according to the detected value. And an agitating means, a suction filtration pump, and a control unit for controlling the driving state of the aeration means and displaying a controlled state.

The raw water pumping means is mounted to the bottom of the flow rate adjustment tank in an immersion state, characterized in that the raw water transfer pump electrically connected to the control unit and the anaerobic tank is characterized in that the structure of the connection to the raw water supply pipe.

The stirring means is mounted to the upper side of the anaerobic tank to extend the rotary shaft of the stirrer motor electrically connected to the control unit to be fixed to the bottom of the anaerobic tank rotatably, it is made of a structure in which a plurality of stirring blades are mounted on the rotary shaft. It features.

The aeration means is a blower motor is connected to the head pipe which extends in the transverse direction extending through the upper side of the two flow control tank and the membrane separation filter, a plurality of branches respectively dropped to the bottom of the flow control tank and the membrane separation filter of both sides The pipe extends in a plurality of places on the head pipe, characterized in that the disk-shaped diffuser is configured in each of the plurality of branch pipe ends.

In addition, the present invention, the '⊃' shaped partition wall is attached above the middle portion of the inner wall of the wall to separate the flow control tank and the anaerobic tank on the raw water inflow side so that the raw water flowing from the flow adjustment tank by the raw water pumping means is separated from the flow of water. The present invention provides a combined purification apparatus using an immersion type membrane separation process for an advanced treatment, wherein another partition wall having a '⊂' shape is attached to a position opposite thereto.

In addition, the control unit includes a plurality of flow adjustment tank level sensors that can detect the water level of the flow adjustment tank on the inflow side of the raw water inflow into a high level state, a low level state, and a bottom state, and the water level of the membrane separation filter in the high level state and the low state. A plurality of membrane filter level sensors which can be detected in a level state and a ground state, a controller electrically connected to each of the plurality of water level sensors, and a control state displayed by an output value from the controller electrically connected to the controller. Characterized in that the display is configured.

In addition, the present invention, the first step of filtering the raw water, which is the waste water is introduced into the flow rate adjustment tank and filled; A second step of determining whether the water level of the raw water inflow side flow adjustment tank and the water level of the membrane separation filtration tank are in a bottom state; A third step which is executed when it is determined in the second step that the level of the flow rate adjustment tank is not the floor state and drives the aeration means; A fourth step of determining whether the level of the flow rate adjustment tank is a high level state after the execution of the third step and proceeding to the next step if it is a high level state and initially executing if it is not a high level state; A fifth step of determining whether the water level state of the membrane separation filtration tank is a high level state after the execution of the fourth step, and proceeding to the next step if it is not a high level state; A sixth step performed after the fifth step to drive the raw water pumping means; If the water level of the membrane separation filtration tank is determined to be high level in the fifth step, the suction filtration pump is maintained to be driven, and the treated water is sucked out by the solid-liquid separation of the raw water introduced from the anaerobic tank into the membrane separation filtration tank by the membrane unit. The present invention provides a method for merger purification using an advanced processing immersion membrane separation process comprising a seventh step of returning to an initial step.

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

One embodiment of the present invention is a flow rate adjusting tank (10) (12) on both sides formed to be divided into a plurality of partitions (2) (4) (6) in a cylindrical tank shape as shown in Figs. And an anaerobic tank 14 and a membrane separation filtration tank 16 related to a combined purification apparatus using an immersion type membrane separation process for advanced processing.

The primary screen tank 20 and the plurality of network screens 22 are configured to filter the raw water flowing through the raw water inlet pipe 18 into the upper portion of the flow rate adjustment tank 10 on the raw water inlet side. It is.

The flow regulating tanks 10 and 12 are arranged at the shortest part and the bottom thereof is connected to the pipe 24, and the raw water is sucked by the raw water pumping means from one of the dual flow regulating tanks 10 and discharged to the anaerobic tank 14. It is supposed to be.

The raw water pumping means is configured to connect the raw water feed pump 26 and the anaerobic tank 14 mounted to the bottom portion of the flow rate adjusting tank 10 to the raw water supply pipe 28.

Further, in the anaerobic tank 14, raw water supplied from the flow rate adjusting tank 10 by raw water pumping means is denitrified under anaerobic state while being stirred by the stirring means, and raw water containing microorganisms from which phosphorus is released is secondary screen. It is discharged to the filtration state through the fine wood screen 32 of the tank (30).

The stirring means extends the rotary shaft 36 of the stirrer motor 34 mounted above the anaerobic tank 14 to be fixed to the bottom of the anaerobic tank 14 so as to be rotatably fixed to the bottom of the anaerobic tank 14. 34 to rotate according to the drive, and the rotary shaft 36 is made of a structure equipped with a plurality of stirring blades 38, the raw water in the anaerobic tank 14 is mixed well according to the rotation action of the stirring blades 38 To be mixed.

That is, in the anaerobic tank 14 in which such a stirring means is built, no air is supplied, so that denitrification is performed, and microorganisms release phosphorus.

In addition, the membrane separation filtration tank 16 is provided with a membrane unit 42 in which a filtration element 40 made of a hollow fiber membrane is formed as an integrated assembly, and the hollow fiber membrane of the membrane unit 42 is connected to the intake pipe 44. It is connected to the discharge tank 46 by this.

In addition, a suction filtration pump 48 is installed on the water intake pipe 44 so that the suction discharge of the treated water is performed, and the membrane unit 42 has a plurality of guide rails disposed at its outer corners. It is formed in the shape constrained by the 50.

The plurality of guide rails 50 are arranged to be upright to the outer edge of the membrane unit 42 as shown in FIGS. 3, 4 and 5 and are installed to one side of the membrane separation filter 16 to install the membrane unit 42. ) Is immersed in the state of lifting up and down.

In addition, in the flow rate adjustment tank 10, 12 and the membrane separation filtration tank 16, as shown in Figs. 1 and 2, the aeration is performed by the aeration means, which is aeration means from the air pump 52. The pumped air is branched through the head pipe 54 into the plurality of branch pipes 56, 58, 60 and then each diffuser 62, 64 of the branch pipes 56, 58, 60. It is comprised from the structure which discharges from 66.

In addition, the controller 70 detects an operation state of each part and inputs it to the controller 72, controls the action of each part according to the control value of the controller 72, and displays the control state on the display 80. The control part 70 which consists of a structure is comprised.

On the other hand, a '82' shaped partition wall 82 is attached above the middle portion of the inner surface of the wall 2 separating the flow rate adjusting tank 10 and the anaerobic tank 14 on the raw water inflow side as described above.

In addition, the '84' shaped partition wall 84 extends into the anaerobic tank 14 above the middle portion of the wall 4 on which the secondary screen tank 30 is installed, and accordingly, the flow rate by the raw water pumping means. The raw water flowing from the adjustment tank 10 is separated from the oil and water, and the sludge-containing raw water conveyed from the membrane separation filtration tank 16 by the conveying means is recycled to the oil-water separation state.

In addition, the control unit 70 is electrically connected to the controller 72 and a plurality of water level sensors 74, 76, 78 installed in the flow rate adjustment tank 10 and the membrane separation filtration tank 16 on the raw water inlet side. In addition, the controller 72 is configured to have a structure in which the display 80 and the plurality of pumps 48, 26, 86 are electrically connected to each other.

In addition, the conveying means is another pump (86) is mounted on the other side of the membrane separation filtration tank 16 in the bottom immersion state, from the pump 86 to the partition 82 of the anaerobic tank (14) pipe ( 88) is connected.

In addition, as shown in FIG. 6, the merger purification treatment method using the immersion membrane separation process for advanced processing according to the present invention is primarily filtered while the raw water, which is the wastewater and wastewater, is introduced into the flow rate adjustment tank and filled in the first step (S1). The second step S2 is executed.

In the second step (S2) it is determined whether the water level state of the raw water inflow side flow adjustment tank 10 is the bottom state, and when the water level state of the raw water inflow side flow adjustment tank 10 is the bottom state, it is returned to the initial stage, When the water level of the raw water inflow side flow adjustment tank 10 is not in the bottom state, the process proceeds to the next third step S3.

In the third step (S3), the aeration means is driven to supply the air to the flow rate adjustment tank 10, in the fourth step (S4) proceeds after the execution of the third step (S3) flow rate adjustment tank ( It is again determined whether the water level state of 10) is a high level state.

When the water level of the flow rate adjustment tank 10 is determined to be at the high level in the fourth step S4, the next fifth step S5 is executed. If the level is not at the high level, the flow returns to the initial step.

In the fifth step (S5), it is determined whether the water level of the membrane separation filter 16 is a high level state and proceeds to the next step if it is not a high level state, and is initially executed when the high level state is such a fifth state. In the sixth step S6 proceeded after the execution of step S5, the raw water pumping means is driven so that the raw water is pumped from the flow rate adjusting tank 10 to the membrane separation filtration tank 16.

After the sixth step S6 is executed, the process returns to the initial stage. When the water level of the membrane separation filtration tank 16 is determined to be high in the fifth step S5, the suction filtration pump 48 By maintaining the operation, a seventh step S7 is performed in which the raw water introduced into the membrane separation filtration tank 16 is sucked and discharged according to the solid-liquid separation by the membrane unit 42 and then returned to the initial stage.

The present invention can be easily and simply made in a short time, the purification process can be solved by the miniaturization and the difficulty of securing the installation and installation space, and also to actively cope with changes in the flow rate or concentration load In addition, it is easy to manage automatic operation is made, there is an advantage that can effectively remove nutrients such as nitrogen and phosphorus even under low load operating conditions.

Claims (6)

A flow rate adjustment tank comprising raw water filtered by the primary screen tank and consisting of a pair of tanks spaced to the opposite side and connected at the bottom thereof by a pipe; An anaerobic tank in which raw water is supplied by the raw water pumping means from one side of the flow rate adjusting tank and the microorganisms are denitrified under the anaerobic state and phosphorus is released while being stirred by the stirring means; A membrane separation filtration tank in which the raw water discharged from the upper hole in the anaerobic tank is filled and solid-liquid separation is carried out by a membrane unit composed of hollow fiber membranes and the raw water including precipitated sludge is returned to the anaerobic tank by a conveying means; A suction filtration pump installed on an intake pipe connecting the discharge tank built in the upper part of the flow control tank to have the membrane unit and the drain pipe and discharging the treated water discharged from the membrane unit through the discharge tank and the drain pipe; Aeration means for supplying air to the flow rate adjustment tank and the membrane separation filtration tank; Detecting the water level condition of the flow rate adjustment tank and the membrane separation filtration tank and controlling the driving state of the raw water pumping means, the stirring means and the suction filtration pump, and the aeration means according to the detected value, the advanced processing comprising a control unit displaying the controlled state Combined purification device using immersion type membrane separation process. According to claim 1, wherein the raw water pumping means, An integrated purification apparatus using an immersion type membrane separation process for an advanced processing, characterized in that it is mounted in the bottom portion of the flow control tank in an immersion state, and is configured to connect the raw water feed pump electrically connected to the control unit and the anaerobic tank to the raw water supply pipe. According to claim 1, wherein the stirring means, Mounted to the upper side of the anaerobic tank is extended to the rotation axis of the stirrer motor electrically connected to the control unit to be fixed to the bottom of the anaerobic tank rotatably, it is made of a structure that is equipped with a plurality of agitator blades on such a rotating shaft Combined purification device using submerged membrane separation process. According to claim 1, wherein the aeration means, A blower motor is connected to the head pipe which is penetrated to the upper side of the both flow adjusting tank and the membrane separation filtration tank and is arranged in the transverse direction, and a plurality of branch pipes respectively dropped to the bottom of the flow control tank and the membrane separation filtration tank on both sides are provided to the head pipe. Extended in a number of places, the integrated purification device using a submerged membrane separation process for advanced processing, characterized in that the structure consisting of a disk-type diffuser mounted on each of the plurality of branch pipe ends. The barrier rib of claim 1, wherein the bulkhead is formed above the middle portion of the inner wall of the wall separating the flow adjusting tank and the anaerobic tank on the raw water inflow side so that the raw water flowing from the flow adjusting tank is separated by the raw water pumping means. Attached, A merger and purification device using an immersion type membrane separation process for advanced processing, characterized in that another partition wall having a '격' shape is attached to a position opposite thereto. A first step in which raw water, which is waste water, is first filtered while being introduced into the flow adjusting tank and filled; A second step of determining whether the level of the raw water inflow side flow adjusting tank is in a bottom state; A third step which is executed when it is determined in the second step that the level of the flow rate adjustment tank is not the floor state and drives the aeration means; A fourth step of determining whether the level of the flow rate adjustment tank is a high level state after the execution of the third step and proceeding to the next step if it is a high level state and initially executing if it is not a high level state; A fifth step of determining whether the water level state of the membrane separation filtration tank is a high level state after the execution of the fourth step, and proceeding to the next step if it is not a high level state; A sixth step performed after the fifth step to drive the raw water pumping means; If the water level of the membrane separation filtration tank is determined to be high level in the fifth step, the suction filtration pump is maintained to be driven, and the treated water is sucked out by the solid-liquid separation of the raw water introduced from the anaerobic tank into the membrane separation filtration tank by the membrane unit. Merge purification method using an advanced processing immersion membrane separation process consisting of a seventh step that is returned to the initial stage after the initial step.