WO2020006774A1 - Filtre à fibres à aspiration inverse alternative et procédé de traitement des eaux usées correspondant - Google Patents

Filtre à fibres à aspiration inverse alternative et procédé de traitement des eaux usées correspondant Download PDF

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Publication number
WO2020006774A1
WO2020006774A1 PCT/CN2018/094981 CN2018094981W WO2020006774A1 WO 2020006774 A1 WO2020006774 A1 WO 2020006774A1 CN 2018094981 W CN2018094981 W CN 2018094981W WO 2020006774 A1 WO2020006774 A1 WO 2020006774A1
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WIPO (PCT)
Prior art keywords
suction
filter
mud
filter plate
sewage
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PCT/CN2018/094981
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English (en)
Chinese (zh)
Inventor
汪深
Original Assignee
湖南屎壳郎环境科技有限公司
汪深
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Application filed by 湖南屎壳郎环境科技有限公司, 汪深 filed Critical 湖南屎壳郎环境科技有限公司
Publication of WO2020006774A1 publication Critical patent/WO2020006774A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Definitions

  • the invention relates to sewage treatment technology in the field of environmental protection, and particularly to a round-trip anti-suction fiber filter and a sewage treatment method thereof.
  • Open source uses measures such as long-distance water transfer, seawater utilization, and sewage resource utilization.
  • measures such as long-distance water transfer, seawater utilization, and sewage resource utilization.
  • the cost of long-distance water diversion and seawater utilization is relatively high. Relatively speaking, the utilization of sewage resources is a more economical way.
  • Fiber rotary disc filter is a typical surface filtration equipment, which has the obvious characteristics of low operating cost, good and stable effluent quality, and small footprint.
  • fiber rotary disc filter is a typical surface filtration equipment, which has the obvious characteristics of low operating cost, good and stable effluent quality, and small footprint.
  • the bottom bracket requires high accuracy and high cost: Since the bottom bracket is the fixed reference for all filter plates, it requires very high accuracy and strength, and because it is exposed to sewage for a long time, its anticorrosion requirements are relatively high, and its processing And the cost of materials is high, the length of the central shaft is also limited, so it also seriously affects the cost of the fiber rotary disc filter;
  • the purpose of the present invention is to provide a round-trip anti-suction fiber filter and its sewage treatment method, which can solve the problems of complicated structure, difficult manufacturing and high cost of fiber rotary disc filter, realize low cost of sewage treatment equipment, and sewage treatment. Large capacity, good sewage treatment effect.
  • a sewage treatment method for a round-trip anti-suction fiber filter a filter hole is symmetrically arranged between the sewage tank and the filtrate tank, and a filter plate is installed and fixed on the filter hole.
  • the sewage in the sewage tank enters the filtrate through the filter plate.
  • a mud suction device is provided on the side of the sewage tank of the filter plate. The mud suction device performs lifting or horizontal mud suction movement under the action of the driving mechanism.
  • the control starts the mud suction device to back-suction the sludge on the filter plate, and simultaneously starts the driving mechanism to drive the mud suction device to perform lifting or horizontal mud suction displacement. , Suction the sludge on the filter plate, so that the filter plate can recover the filtering ability again.
  • a round-trip anti-suction fiber filter comprises a sewage tank, a filtrate tank, a filter plate, a mud sucker and a driving mechanism.
  • the sewage tank is connected to the filtrate tank, and a filter hole is formed at the connection between the sewage tank and the filtrate tank.
  • a filter plate is installed and fixed on the side of the sewage tank of the filter plate, and a mud suction device is provided correspondingly.
  • the mud suction device is abutted against the filter plate, and the mud suction device is connected to the driving mechanism, and is driven by the driving mechanism to perform lifting or horizontal synchronous reverse. Suction displacement.
  • the filter plate is one or more; the filter holes are also one or more; the mud suction device is one or more; each filter hole is correspondingly installed with a filter plate, The filter plate corresponds to the aspirator.
  • the driving mechanism includes a lifting mechanism, a slope is provided at the bottom of the sewage tank, a sedimentation sludge pump is arranged in the sewage tank, and an inlet end of a suction pipe of the sedimentation sludge pump is placed at the bottom of the sewage tank.
  • the lifting mechanism includes a load-bearing frame, a lifting driving device, a pulley and a pull rope.
  • the load-bearing frame is a door frame structure, and both ends of the load-bearing frame are respectively fixed and fixed on the pool body on both sides of the sewage tank.
  • the device is installed at the center position of the crossbeam of the load-bearing frame.
  • the lifting driving device is connected to the pull rope.
  • the two ends of the pulling rope pass through two pulleys to connect with the two sets of mud suction devices.
  • the pulling rope is pulled by the lifting drive mechanism.
  • the group of mud suckers do synchronous reverse lifting movements one by one.
  • the filter plate includes a filter cloth and a filter cloth support, the filter cloth is fixed on the filter cloth support, and a plane on which the filter cloth support and the filter cloth are bonded is a grid structure.
  • the suction device includes a suction pump, a suction head, a suction pipe and a suction nozzle.
  • the suction pump is connected to the suction head through the suction pipe, and the suction head is close to a filter cloth.
  • suction nozzles are evenly arranged on the side, the suction nozzle is close to the filter cloth, and its suction range covers the filter cloth; the highest position of the suction head is equal to or slightly higher than the upper edge of the filter plate, and the lowest position of the suction head is equal to or slightly Below the lower edge of the filter plate.
  • lifting guide wheels are installed at both ends of the suction head of the mud suction device, and correspondingly, vertical lifting guides are provided at both ends of the suction head of the sewage tank, and the lifting and lowering ends of the suction head are provided.
  • the guide wheel is sleeved in the lifting guide.
  • a liquid level sensor is provided on the upper part of the sewage tank, and a limit sensor for limiting the stroke of the suction device is installed on the upper part of the lifting guide rail.
  • the driving mechanism includes a lateral driving mechanism.
  • the lateral driving mechanism includes a lateral moving force, a pulley group, and a pull rope.
  • the lateral moving force is installed and fixed on one side of the sewage tank, and the pulley group is fixed on the pool wall of the sewage tank.
  • the pulling rope bypasses the horizontal moving force.
  • the two ends of the pulling rope pass through the pulleys of the pulley group and are connected to the horizontal ends of the suction unit.
  • the pulling rope is driven by the horizontal moving force to carry the horizontal and reciprocating movement of the suction unit. .
  • the end of the suction head of the mud suction device is provided with a traverse guide wheel, and correspondingly, traverse guide rails are respectively provided at the upper and lower horizontal portions of the sewage tank,
  • the traverse guide wheel is sleeved in the traverse guide.
  • a liquid level sensor is provided on the upper part of the sewage tank, and a limit sensor for limiting the stroke of the suction device is installed at the end of the lateral guide rail.
  • a water inlet tank is connected to a front end of the sewage tank, and a water outlet tank is connected to a rear end of the filtrate tank.
  • An outlet weir is provided between the filtrate tank and the water outlet tank, and the liquid level of the filter tank is lower than that of the sewage tank. And the upper edge of the filter hole is located below the liquid level in the filtrate tank.
  • the round-trip anti-suction fiber filter according to the present invention mainly includes a sewage tank, a filtrate tank, a filter plate, a suction device, a driving mechanism, a traverse guide or a lifting guide, a limit sensor, a liquid level sensor, a sedimentation sludge pump, and other parts.
  • the sewage pond is a rectangular structure, and a slope is set at the bottom of the sewage pond to concentrate the sludge to facilitate the suction and cleaning.
  • the rear end of the sewage pond is connected to a filtrate pond, and a plurality of horizontally arranged between the filtrate pond and the sewage pond.
  • Filter holes each filter hole is the same size and size, all filter holes can be set in the horizontal direction; filter plates are installed and fixed at the front of the filter holes, and the filter holes are completely sealed, so that sewage can only be filtered through the filter plate In order to enter the filtrate tank through the filter hole.
  • the round-trip anti-suction fiber filter of the present invention has two embodiments: one is a round-trip lifting anti-suction fiber filter, and the other is a round-trip lateral anti-suction fiber filter. The working principles of the methods are explained separately:
  • a sewage treatment method for a round-trip anti-suction fiber filter adopts a round-trip lifting anti-suction fiber filter. All filter holes are symmetrically arranged in two groups along the horizontal direction.
  • the front end of each filter plate is provided with a set of mud suction devices. Under the limitation of the lifting guide rail and the driving action of the lifting mechanism, the mud suction head is flush with the filter plate and abuts against the front of the filter cloth. Its movement trajectory is parallel to the filter plate. The suction head sucks away the sludge attached to the filter cloth.
  • the structure of the two suction devices is the same, the length of which is equal to or slightly larger than the horizontal width of the filter plate, and in the vertical direction. It coincides with the central plane of the filter plate; the lifting mechanism is installed and fixed above the sewage tank, and the two ends of its pull rope are connected to two sets of mud suction devices respectively, which drives the mud suction device to move up and down, and the movement of the two mud suction devices is Synchronous reverse; lifting guides are set at both ends of the suction device, and the suction device can share the intermediate lifting guide.
  • the main function of the lifting guide is to cooperate with the roller at the end of the suction device to do the lifting movement of the suction device.
  • the limit sensor is set on the top of the middle lifting guide,
  • the lifting stroke of the device acts as a limit.
  • the lifting driving device stops moving and waits for the next anti-suction instruction to be sent.
  • the device moves in the opposite direction, and the movements of the two mud suction devices move in the opposite direction.
  • the liquid level sensor is installed and fixed on the sewage tank. Its role is to detect the liquid level of the sewage tank to indirectly determine the clogging of the filter cloth.
  • the suction pump of the mud suction device is started to start the filter cloth.
  • the sludge is back-suctioned and the lifting mechanism is activated at the same time, which drives the two suction devices to move up and down at a uniform speed until the suction device touches the limit sensor, then the lifting mechanism and the suction device are stopped.
  • the sludge suction pump completes the comprehensive cleaning of the sludge on the entire filter cloth; the sedimentation sludge pump is installed on the sewage tank, and its suction pipe extends to the lowest point of the sewage tank, which can regularly deposit the bottom of the sewage tank. Sludge is drawn out to prevent sludge from accumulating.
  • a sewage treatment method for a round-trip anti-suction fiber filter adopts a round-trip lateral anti-suction fiber filter, and a series of filter holes are arranged between the sewage tank and the filtrate tank, Each filter hole has the same size and the same height.
  • a filter plate is installed and fixed on each filter hole. The sewage in the sewage tank enters the filtrate tank through the filtration of the filter plate.
  • a set of mud suction devices are evenly arranged at the front of the filter plate. The structure of all the suction devices is the same. Each suction device is connected in a straight line and is evenly arranged in the horizontal direction. Under the action of the driving mechanism, it performs synchronous back and forth movement.
  • the filter plate When the filter plate is blocked, the level of the sewage tank rises. When the level of the sewage tank reaches the set height, the suction pump of the mud suction device is started, and the sludge on the filter plate is back-suctioned. At the same time, the driving mechanism with the mud suction device is started to perform synchronous lateral movement, while filtering The sludge on the plate is sucked away, so that the filter plate can recover the filtering ability again.
  • a back-and-forth horizontal anti-suction fiber membrane filter comprises a sewage tank, a filtrate tank, a plurality of sets of filter plates, a mud suction unit, a driving mechanism, two lateral guide rails, a limit sensor, a liquid level sensor, and sedimentary sludge
  • the sewage tank is provided with a slope at the bottom to concentrate the sediment sludge and facilitate the suction and cleaning.
  • the rear end of the sewage tank is connected to the filtrate tank.
  • each filter hole has the same size and size, and the same position in the height direction; a filter plate is installed and fixed at the front of each filter hole, the filter plate completely seals the filter hole, so that the sewage is only After filtering through the filter plate, it can enter the filtrate tank through the filter hole.
  • the mud suction unit is set at the front of the filter plate. Its suction head is flush with the filter plate and is in front of the filter cloth.
  • the sludge on the filter cloth is sucked away, and the length of the suction head is equal to or slightly larger than the vertical height of the filter plate, and it coincides with the central plane of the filter plate in the horizontal direction;
  • the driving mechanism is installed and fixed on the sewage tank, and its The two ends of the rope are respectively connected to the two ends of the suction unit, which drives the suction unit to move back and forth laterally;
  • two lateral guide rails are respectively arranged on the upper and lower sides of the suction unit, and are arranged horizontally.
  • the main function of the lateral guide rails is By cooperating with the roller at the end of the suction device, it can guide and limit the lateral movement of the suction device, make the movement track of the suction device parallel to the plane of the filter, and make the suction nozzle of the suction device and the filter
  • the board keeps a proper distance; the limit sensors are set at the two ends of the traverse rail respectively, which limit the lateral stroke of the suction device.
  • the drive mechanism stops moving, waiting for the next anti-suction instruction, the drive mechanism moves in reverse, and the suction unit also moves in reverse;
  • the liquid level sensor is installed and fixed on the sewage tank, and its role is to detect The liquid level of the sewage tank is used to indirectly determine the clogging of the filter cloth.
  • the liquid level sensor detects that the liquid level in the sewage tank exceeds the warning line, it can be considered that the filter cloth has a serious blockage and the dirt on the filter cloth needs to be The mud is cleaned up.
  • the mud pump of the mud suction device is started to start the anti-suction of the sludge on the filter cloth.
  • the driving mechanism is started, which drives the mud suction group to move horizontally and uniformly until the mud suction device touches
  • the limit sensor stops the dredging pump of the driving mechanism and the dredger to complete the comprehensive cleaning of the sludge on the entire filter cloth.
  • the sedimentation sludge pump is installed on the sewage tank, and its suction pipe extends to the lowest level of the sewage tank. Point, it can regularly pull out the sludge deposited at the bottom of the sewage tank to prevent sludge deposition.
  • the filter plate is composed of a filter cloth and a filter cloth support.
  • the filter cloth is the working part of the filter.
  • the material is usually but not limited to the use of dense fiber filter cloth, which is fixed on the filter cloth support; the filter cloth support is the skeleton of the entire filter plate, which provides support for the filter cloth and ensures adhesion.
  • the filter cloth on it is kept flat.
  • the material supported by the filter cloth can be, but is not limited to, high-strength nylon, glass fiber reinforced plastic, or stainless steel.
  • the plane that fits the filter cloth is a grid structure, which can ensure the necessary support strength without Affects the filtering area of the filter cloth.
  • the mud sucker group is formed by n (n ⁇ 1) mud suckers connected in series in the horizontal direction by a connecting rope. All the mud suckers have the same structure and the same size and are uniform in the horizontal direction. Distribution, the distance between two pairs is equal, and the distance between them is the working length of each suction device.
  • the suction device is mainly composed of a suction head, a suction pump, a suction pipe and a traverse guide wheel group.
  • the suction head is its working part, which is located at the front end of the filter plate.
  • the side of the suction head close to the filter cloth is uniformly arranged with a plurality of suction nozzles in the vertical direction.
  • the suction nozzle is abutted on the filter cloth, and its suction suction
  • the suction pump is a power unit for anti-suction, which is installed on the sewage tank and connected to the suction head through the suction pipe; one end of the suction pipe is connected to the suction pump The other end of the water inlet is connected to the back of the suction head.
  • Each suction device can be provided with multiple suction pipes and evenly distributed along the length of the suction head.
  • the traverse guide wheels are respectively set on the suction head of the suction head.
  • the suction device cooperates with the traverse guide to guide and limit the lateral movement of the suction device; in order to prevent the suction device from blocking the filter cloth and reduce the filtering area, the suction device
  • the initial position is flush with the vertical border to the left or right of the filter plate.
  • the suction head is relatively long.
  • a suction pump may not effectively ensure the overall suction effect.
  • multiple suction pumps may be set.
  • the specifications and models are consistent and interchangeable, and their corresponding suction lengths are also the same.
  • the driving mechanism is a power device for laterally reciprocating movement of the suction unit, which is composed of a horizontal drive, a pulley unit, and a pull rope.
  • the traverse drive is fixedly installed on one side of the sewage tank. It usually adopts but is not limited to the use of a winch mechanism, which can realize the forward and reverse output.
  • the pulley set includes several pulleys, which are fixed on the wall of the sewage tank respectively. Through the traverse drive, the two ends of the pulley set are respectively connected to the two ends of the suction unit, which can be driven by the traverse drive to carry the horizontal and reciprocating movement of the suction unit.
  • the filtering area is not large, so it can be provided with only one filter hole, a filter plate is set on the filter hole, a mud suction device is set at the front of the filter plate, and the suction nozzle on the suction head is on the filter plate. It is evenly distributed in the height range to ensure that the mud suction range completely covers the filter cloth in the vertical direction.
  • the fiber membrane filter of the invention not only has all the advantages of the fiber rotary disc filter, but also has the following advantages over the fiber rotary disc filter:
  • the filter plate is rectangular, corresponding to the suction device, the suction speed is the same in each position during the reverse suction process, so the wear of the filter cloth is uniform, which can effectively extend the service life of the filter cloth and save operating costs. ;
  • the filter cloth has a rectangular structure, which does not require special cutting or customization, no waste, and low cost;
  • the filter plate support is a rectangular structure, and products of common specifications and sizes on the market can be selected without special customization and manufacturing costs.
  • FIG. 1 is a plan view of a structure according to an embodiment of the present invention.
  • Figure 2 is a view A-A of Figure 1;
  • Figure 3 is a B-B view of Figure 1;
  • FIG. 4 is a schematic structural diagram of a filter plate according to an embodiment of the present invention.
  • Fig. 5 is a C-C view of Fig. 4;
  • FIG. 6 is a schematic structural diagram of a mud aspirator according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a mud suction head according to the first embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a lifting mechanism according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a multi-filter plate fiber membrane filter according to an embodiment of the present invention.
  • Fig. 10 is an E-E view of Fig. 9;
  • FIG. 11 is a schematic structural diagram of a multi-filter plate multi-suction fiber membrane filter according to an embodiment of the present invention.
  • Fig. 12 is an F-F view of Fig. 11;
  • FIG. 13 is a plan view of a second embodiment of the present invention.
  • FIG. 14 is an A-A view of FIG. 13;
  • FIG. 15 is a B-B view of FIG. 13;
  • FIG. 16 is a schematic structural diagram of a filter plate according to a second embodiment of the present invention.
  • FIG. 17 is a C-C view of FIG. 16; FIG.
  • FIG. 18 is a schematic diagram of the installation of the second suction unit of the embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of a second mud sucker group according to the embodiment of the present invention.
  • FIG. 20 is a D-D view of FIG. 19;
  • FIG. 21 is a schematic structural diagram of a driving mechanism according to Embodiment 2 of the present invention.
  • FIG. 22 is a schematic structural diagram of a fiber membrane filter with a single filter plate according to a second embodiment of the present invention.
  • FIG. 23 is an E-E view of FIG. 22.
  • 601-suction head 602-suction pump, 604a-elevating guide wheel a, 604b-elevating guide wheel b, 603a-suction nozzle a, 603b-suction nozzle b, 603x-suction nozzle x, 605-suction Mud pipe
  • 602a-suction pump a 602b-suction pump b, 602c-suction pump c, 602n-suction pump n;
  • 5C-filter plate C 5D-filter plate D, 5M-filter plate M, 6-suction unit, 7A-transverse drive mechanism, 8D-traverse guide A, 8E-traverse guide B, 9A-limit sensor A, 9B-limit sensor B;
  • FIG. 1-12 For a small sewage treatment system, the structure of a back-and-forth lifting type anti-suction fiber membrane filter according to Embodiment 1 of the present invention is shown in FIG. 1-12, which includes a water inlet tank 1, a sewage tank 2, a filtrate tank 3, Outlet tank 4, two sets of filter plates 5A and 5B, two sets of mud suction devices 6A and 6B 6A and 6B, lifting mechanism 7, lifting guide rails 8A, 8B and 8C, limit sensor 9, liquid level sensor 10 and sedimentation sludge pump 11 And other parts.
  • Intake tank 1 is located at the front of the sewage tank 2. The sewage flows slowly and smoothly into the sewage tank 2 through the water inlet between the water tank 1 and the sewage tank 2.
  • the sewage tank 2 has a rectangular structure, and a slope is set at the bottom to make sedimentation.
  • the sludge is concentrated to facilitate suction cleaning.
  • the back end of sewage tank 2 is connected to filtrate tank 3, and there is a liquid level difference H between filtrate tank 3 and sewage tank 2.
  • the size of H depends on the filtration pressure of the sewage filtration.
  • the two sets of filter plates 5A and 5B are installed and fixed at the front ends of the two filter holes.
  • a set of suction mud is set at the front end of each group of filter plates 5A and 5B 6A and 6B, whose suction head is level with the filter plates 5A and 5B and abuts in front of the filter cloth of the filter plates 5A and 5B. It can suck the sludge attached to the filter cloth and two suction mud
  • the structure of the filters 6A and 6B is the same, and the length is equal to or slightly larger than the horizontal width of the filter plates 5A and 5B.
  • the two mud suckers 6A and 6B coincide with the center planes of the filter plates 5A and 5B, respectively;
  • the lifting mechanism 7 is installed and fixed above the sewage tank 2, and the two ends of its rope are respectively connected with the two The group of mud suction devices 6A and 6B are connected, which drives the mud suction devices 6A and 6B to move up and down, and the movement of the two mud suction devices 6A and 6B is synchronous and reverse;
  • the lifting guides 8A, 8B, and 8C are installed and fixed in the sewage tank 2.
  • the positions on the wall of the tank are set at the two ends of the suction device 6A and 6B, respectively.
  • the suction devices 6A and 6B can share the intermediate lifting guide 8C.
  • the main function of the lifting guides 8A, 8B and 8C is through the communication with the suction device 6A.
  • the limit sensor 9 is set at the top position of the middle lifting guide 8C, which starts the lifting stroke of the suction machines 6A and 6B Limiting effect.
  • the liquid level sensor 10 is installed and fixed on the sewage tank 2 and its role is to detect the liquid level of the sewage tank 2 to indirectly determine the clogging of the filter plates 5A and 5B.
  • the liquid level sensor 10 detects the liquid level in the sewage tank 2
  • the warning line is exceeded, that is, when the liquid level difference H between the sewage tank 2 and the filtrate tank 3 is too large, it can be considered that the filter plates 5A and 5B have relatively serious blockages, and the sludge on the filter plates 5A and 5B needs to be cleaned up.
  • the suction pumps of the suction dredges 6A and 6B are started to start the back suction of the sludge on the filter plates 5A and 5B, and the lifting mechanism 7 is started at the same time, which drives the two suction dredges 6A and 6B to go up or down respectively. Move down uniformly until the suction device 6A or 6B touches the limit sensor 8. Then stop the suction pump of the lifting mechanism 7 and the suction devices 6A and 6B to complete the comprehensive cleaning of the sludge on the entire filter cloth;
  • the water outlet tank 4 is located at the rear end of the filter tank, and it is connected to the filtrate tank 3.
  • the sedimentation sludge pump 11 is installed on the sewage tank 2 and its suction pipe extends all the way to the most Point, which may be periodically sump 2 bottom precipitated sludge is withdrawn to prevent the sludge sedimentation.
  • the structure of the above-mentioned filter plates 5A and 5B is shown in FIGS. 4 and 5, and is composed of a filter cloth support 501 and a filter cloth 502.
  • the filter cloth 502 is a working part for filter filtration, and the material is usually but not limited to a dense bundle fiber filter cloth, which is attached to a filter cloth support 501; the filter cloth support 501 is the skeleton of the entire filter plate 5A and 5B, which is a filter
  • the cloth 502 provides support while ensuring that the filter cloth 502 attached to it is kept flat.
  • the material of the filter cloth support 501 can be, but is not limited to, high-strength nylon, polyurethane, or stainless steel.
  • the plane on which the cloth 502 fits is usually but not limited to The grid structure can ensure the necessary support strength without affecting the filtering area of the filter cloth 502.
  • FIGS. 6 and 7 The structures of the above-mentioned mud suction devices 6A and 6B are shown in FIGS. 6 and 7, which mainly include a mud suction head 601, a suction pump 602, a suction pipe 605, suction nozzles 603a, 603b, and 603x, and lifting guide wheels 604a and 604b and other parts.
  • the suction head 601 is its working part, which is located at the front end of the filter plate 5A or 5B.
  • the side of the suction head 601 near the filter cloth 502 is uniformly arranged with a plurality of suction nozzles in a horizontal direction, and the suction nozzle is abutted against the filter cloth.
  • the mud suction pump 602 is a back suction power device, which is installed on the sewage tank 2 and passes through the mud suction nozzles 603a, 603b, ... and 603x and The suction head 601 is connected together; one end of the suction nozzle 605 is connected to the water inlet of the suction pump 602, and the other end is connected to the back of the suction head 601.
  • Each suction device 6A and 6B may be provided with multiple suction nozzles. 603a, 603b ...
  • the lifting movements of the suction devices 6A and 6B play a guiding and limiting role; in order to prevent the suction device 6A and 6B from covering the filter cloth 502 and reducing the filtering area, the highest position of the suction head 601 is equal to or slightly higher than that of the filter plates 5A and 5B. Upper edge, the lowest position is equal to or slightly lower than the lower edges of the filter plates 5A and 5B.
  • the suction head 601 has a certain Amount, in order to ensure its smooth movement of the lifting process.
  • FIG. 8 is a power device for the reciprocating lifting movement of the suction machines 6A and 6B, which is composed of a bearing frame 701, a lifting drive 702, two pulleys 703 a and 703 b, and a pull rope 704.
  • the load-bearing frame 701 is a door frame structure. The two ends of the load-bearing frame 701 are respectively fixed on the pool body on both sides of the sewage tank 2.
  • the lifting drive 702 is installed at the center position of the beam of the load-bearing frame 701. It usually adopts but is not limited to a sprocket mechanism.
  • Or winch mechanism which can realize the output of forward and reverse rotation; two pulleys 703a and 703b are installed on both sides under the crossbeam of the load bearing frame 701; a rope 704 bypasses the lifting drive 702, and the two ends pass through the two pulleys 703a and 703a, respectively.
  • 703b is connected to the two mud suction devices 6A and 6B, which are driven by the lifting drive 702 to take two mud suction devices 6A and 6B up and down to perform synchronous reverse lifting movements.
  • a multi-filter plate structure can be used for some large-scale sewage treatment systems.
  • the specific structure is shown in Figures 9 and 10.
  • the main structure and working principle are basically the same as those of the first embodiment, but to ensure sufficient filtration area, the sewage tank 2
  • the partition wall with the filtrate tank 3 can be made relatively long, so the filter holes on both sides are also very long or consist of multiple filter holes of the same size.
  • each group of filter plates 5A and 5B is also Can be composed of multiple filter plates 5A01, 5A02, ..., 5A0m or 5B01, 5B02, ..., 5B0m, each filter plate 5A01, 5A02, ..., 5A0m, 5B01, 5B02, ..., 5B0m have the same specifications, The dimensions are the same and can be used for each other.
  • the suction nozzles on the suction head 601 are also arranged in sections in the horizontal direction, and each section corresponds to a filter plate, which is evenly distributed within the width of each filter plate.
  • each mud suction pump 602a, 602c, ..., 602n can be provided.
  • the specifications and models of each mud suction pump 602a, 602c, ..., 602n are consistent and interchangeable.
  • the suction length is also the same.
  • all the suction pumps 602a, 602c, ..., 602n start and stop together.
  • multi-filter plates and multi-suction dredgers can also be used.
  • the specific structure is shown in Figures 11 and 12.
  • the main structure is the same as that of the specific embodiment 2.
  • the main difference from the specific embodiment is that each of the filter plates 5A01, 5A02, ..., 5A0m, 5B01, 5B02, ..., 5B0m corresponds to a mud suction device 6A01, 6A02.
  • each of the suction devices 6A01, 6A02, ..., 6A0x, 6B01, 6B02, ..., 6B0x is connected to the drawstring, and the drawstring 704 passes through the upper part of it.
  • the pulley is connected to the lifting drive 702, and the suction device 6A01, 6A02, ..., 6A0x, 6B01, 6B02, ..., 6B0x uniformly lifting and lowering movement is driven by the lifting drive 702, with the filter plate group horizontal center as the boundary, on the same side
  • 6A0x or 6B01, 6B02, ..., 6B0x movements are kept in sync, and the suction of different sides 6A01, 6A02, ... 6A0x is synchronized with the movements of 6B01, 6B02, ..., 6B0x.
  • the middle lifting guides 8D01, 8D02, ..., 8D0s are provided in the middle of no two suction devices to lift and lower all the suction devices 6A01, 6A02, ..., 6A0x, 6B01, 6B02, ..., 6B0x. Limit and guide during the process.
  • FIG. 13-23 The structure of a transverse reciprocating anti-suction fiber membrane filter according to the second embodiment of the present invention is shown in FIG. 13-23, which mainly includes an inlet pool 1, a sewage pool 2, a filtrate pool 3, an outlet pool 4, and several groups. Filter plates 5A, 5B, 5C, ... and 5M, suction device group 6, lateral drive mechanism 7A, two lateral guide rails 8D and 8E, two limit sensors 9A and 9B, liquid level sensor 10, and sediment sludge Pump 11 and other components.
  • the inlet tank 1 is located at the front end of the sewage tank 2, and the supernatant liquid enters the sewage tank 2 through overflow.
  • the sewage tank 2 is a rectangular structure, and a slope is set at the bottom thereof to concentrate the sediment sludge, which is convenient for suction cleaning.
  • the rear end of the pool 2 is connected to the filtrate pool 3.
  • the filtrate pool 3 and the sewage pool 2 are uniformly provided with m (m ⁇ 1) filter holes in the horizontal direction. Each filter hole has the same size and size. The positions are the same; the filter plates 5A, 5B, 5C, ... and 5M are installed and fixed at the front of the filter holes.
  • Each filter plate corresponds to a filter hole, which completely seals the filter holes, so that the sewage in the sewage tank 2 can only be filtered.
  • the suction unit 6 is arranged at the front of the filter plate, and its suction head and the filter plates 5A, 5B, 5C, ... ... And 5M is flush with and vertical to the front of the filter cloth, it can suck the sludge attached to the filter cloth, the length of the suction head is equal to or slightly larger than the vertical height of the filter plate, and in the horizontal direction It just coincides with the center planes of the filter plates 5A, 5B, 5C, ... and 5M;
  • the structure 7A is installed and fixed on the sewage tank 2.
  • the two ends of its pull rope are connected to the two ends of the suction device group 6, respectively, to drive the suction device group 6 to move back and forth laterally; two lateral guide rails 8D and 8E are respectively arranged on the suction device.
  • the upper and lower sides of the suction unit 6 are arranged horizontally.
  • the main role of the traversing guide rails 8D and 8E is to guide and limit the lateral movement of the suction suction through cooperation with the rollers at the end of the suction suction, so that the suction of mud
  • the movement trajectory of the device is parallel to the plane of the filter, and the suction nozzle of the suction device is kept at an appropriate distance from the filter plate; the limit sensors 9A and 9B are respectively arranged at both ends of the lateral guide rail 8D or 8E,
  • the lateral stroke of group 6 acts as a limit.
  • the lateral drive mechanism 7A stops moving and waits for the next anti-suction.
  • the lateral drive mechanism 7A moves in the reverse direction, and the suction unit 6 also moves in the opposite direction.
  • the liquid level sensor 10 is fixed on the sewage tank 2 and its role is to indirectly judge by detecting the liquid level of the sewage tank 2 Filter cloth clogging when the liquid level sensor 10 detects If the liquid level in the pool 2 exceeds the warning line, it can be considered that the filter cloth has a serious blockage, and the sludge on the filter cloth needs to be cleaned. At this time, the suction pump of the suction unit 6 is started to start the filter cloth.
  • the sludge on the upper side is sucked back, and the lateral driving mechanism 7A is activated at the same time, which drives the suction unit 6 to move horizontally and uniformly until the suction unit 6 touches the limit sensor 9A or 9B, and then stops the lateral driving mechanism 7A and
  • the suction pump of the suction device group 6 completes the comprehensive cleaning of the sludge on the entire filter cloth; the sedimentation sludge pump 11 is installed on the sewage tank 2 and its suction pipe extends to the lowest point of the sewage tank 2.
  • the sludge deposited at the bottom of the sewage tank 2 can be regularly drawn out to prevent sludge deposition.
  • the water outlet tank 4 is located at the rear end of the filter tank, which is connected to the filtrate tank 3. There is an outlet weir between the water outlet tank 4 and the filtrate tank 3.
  • the filtrate in the filtrate tank 3 continuously overflows into the water outlet tank 4 through the water outlet weir.
  • the water outlet tank sends water to the
  • the structure of the filter plates 5A, 5B, 5C,... And 5M according to the present invention is shown in FIGS. 16 and 17, and is composed of a filter cloth support 501 and a filter cloth 502.
  • the filter cloth 502 is a working part for filter filtration, and the material is usually but not limited to a dense bundle fiber filter cloth, which is attached to a filter cloth support 501; the filter cloth support 501 is the skeleton of the entire filter plate 5A and 5B, which is a filter
  • the cloth 502 provides support while ensuring that the filter cloth 502 attached to it is kept flat.
  • the material of the filter cloth support 501 can be, but is not limited to, high-strength nylon, polyurethane, or stainless steel.
  • the plane on which the cloth 502 fits is usually but not limited to The grid structure can ensure the necessary support strength without affecting the filtering area of the filter cloth 502.
  • FIG. 18 is composed of a plurality of suction devices 601a, 601b, ..., 601n and connecting ropes 602a, 602b, ..., 602s. All the suction devices 601a, 601b, ... and 601n have the same structure and the same size, are evenly distributed in the horizontal direction, and the distance between them is equal, and the distance between them is the working length of each suction device; the suction devices 601a, 601b ... And 601n are connected in series with each other by connecting ropes 602a, 602b,... And 602s, so as to ensure that all the suction devices 601a, 601b,... And 601n can move synchronously under the pull of the driving mechanism 7.
  • Figs. 19 and 20 The structures of the mud suckers 601a, 601b, ... and 601n according to the present invention are shown in Figs. 19 and 20, which are mainly composed of a mud suction head 6011, a mud suction pump 6012, a mud suction pipe 6013a, 6013b, ... and 6013x. It also consists of two traverse guide wheel sets 6014a and 6014b.
  • the suction head 6011 is its working part, which is located at the front end of the filter plates 5A, 5B, 5C, ... and 5M.
  • the side of the suction head 6011 near the filter cloth 502 is uniformly arranged with a plurality of suction nozzles in the vertical direction.
  • the suction nozzle is abutted on the filter cloth 502, and its suction range is completely covered by the filter cloth 502 in the vertical direction.
  • the suction pump 6012 is an anti-suction power unit, which is installed on the sewage tank 2 and sucks mud.
  • the pipes 6013a, 6013b, ... and 6013x are connected to the suction head 6011; one end of the suction pipes 6013a, 6013b, ... and 6013x are connected to the water inlet of the suction pump 6012, and the other end is connected to the back of the suction head 6011
  • Each of the mud suction devices 601a, 601b, ... and 601n can be provided with multiple suction pipes 013a, 6013b, ...
  • Suction filters 601a, 601b ?? 601n and when not working, the initial position of the suction head 6011 of the filter plates 5A, 5B, 5C, 5M, and a vertical boundary > flush with the left or right.
  • the suction head 6011 is relatively long. At this time, a suction pump may not be able to effectively ensure the overall suction effect. Pumps, the specifications and models of each suction pump are consistent and interchangeable, and the corresponding suction length is also the same.
  • the lateral driving mechanism 7A is a power device for the lateral reciprocating movement of the suction unit 6, which is mainly composed of a lateral moving force 705, a plurality of pulleys 702a, 702b, ... and 702z and a pull Rope 704 composition.
  • the horizontal moving force 705 is fixedly installed on one side of the sewage tank 2. It usually adopts but is not limited to the use of a winch mechanism, which can realize forward and reverse output; the pulleys 702a, 702b, ... and 702z are fixedly installed on the pool of the sewage tank 2 respectively.
  • the pull rope 703 bypasses the lateral movement force 705, and the two ends respectively pass through the pulleys 702a, 702b,... And 702z and are connected to both ends of the suction unit 6, which can be carried by the lateral movement force 705 Suction group 6 performs horizontal and horizontal reciprocating motion.
  • a filter plate is set on the filter hole, and a mud trap group 6 is set at the front of the filter plate.
  • the suction nozzles on the suction head are evenly distributed in the height range of the filter plate to ensure that the suction range of the mud cover completely covers the filter cloth in the vertical direction.
  • the remaining structure is the same as the foregoing.

Abstract

L'invention concerne un filtre à fibres à aspiration inverse alternative. Un trou de filtration est aménagé symétriquement entre un bassin d'eaux usées (2) et un bassin de filtrat (3), des plaques filtrantes (5A, 5B) sont montées et fixées sur le trou de filtration, les eaux usées du bassin d'eaux usées (2) entrent dans le bassin de filtrat (3) par filtration des plaques filtrantes (5A, 5B), un côté du bassin d'eaux usées (2) des plaques filtrantes (5A, 5B) est pourvu d'aspirateurs de boues (6A, 6B) et les aspirateurs de boues (6A, 6B) effectuent respectivement un mouvement synchrone vers le haut ou transversal d'aspiration inverse des boues sous l'action d'un mécanisme d'entraînement; lorsque les plaques filtrantes (5A, 5B) sont bloquées, le niveau d'eaux usées du bassin d'eaux usées (2) augmente, et lorsque le niveau d'eaux usées du bassin d'eaux usées (2) atteint le niveau de liquide défini par le capteur de niveau de liquide (10), les aspirateurs de boues (6A, 6B) sont commandés pour être activés afin d'effectuer une aspiration inverse des boues sur les plaques filtrantes (5A, 5B); pendant ce temps, le mécanisme d'entraînement est activé pour entraîner deux groupes d'aspirateurs de boues (6A, 6B) afin d'effectuer respectivement un déplacement synchrone vers le haut ou transversal d'aspiration inverse des boues, les boues sur les plaques filtrantes (5A, 5B) étant ainsi aspirées et la capacité de filtrage des plaques filtrantes (5A, 5B) étant rétablie. L'invention concerne en outre un procédé de traitement des eaux usées du filtre à fibres à aspiration alternative.
PCT/CN2018/094981 2018-07-02 2018-07-09 Filtre à fibres à aspiration inverse alternative et procédé de traitement des eaux usées correspondant WO2020006774A1 (fr)

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