A ceramic flat sheet membrane filter for oily liquid suspended matter

Abstract

This invention discloses a ceramic flat-plate membrane filtration device for oily liquid suspended solids, relating to the field of wastewater treatment technology. It includes a wastewater tank, a filter tank, and a storage tank all mounted on a base frame. A mixing and conveying branch pipe on a separation component supplies the filter tank with oily liquid carrying a demulsifier. A water distribution frame on a dispersion component generates an oscillating dispersion motion on the oily liquid supplied to the filter tank. Demulsifier is intermittently supplied to the oily liquid in the filter tank through a main supply pipe on an intermittent component. A diversion weir is formed by high-oil-filtering and low-oil-filtering membrane plates on an oil removal component, applying dynamic oil removal measures to the oily liquid supplied to the filter tank. This invention simultaneously employs a combination of alternating oscillating water distribution and top-pull dynamic oil removal. Based on the diversion weir and the slow flow and multiple filtration conditions of the membrane material, it achieves an active oil removal effect for oily substances of different particle sizes and states, thereby improving the oil removal rate.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a ceramic flat sheet membrane filter for oily liquid suspended matter. Background Technology

[0002] Wastewater containing oily substances discharged during industrial production processes includes natural petroleum, petroleum products, tar and its fractions, as well as edible animal and vegetable oils and fats. In terms of water pollution, petroleum and tar are the main pollutants. Oily substances in wastewater usually exist in three states: ① The oil particles dispersed in the wastewater are relatively large and easy to separate from the wastewater. In petroleum wastewater, this oil accounts for a large proportion of the water. ② The oil particles dispersed in the wastewater are relatively small and in an emulsified state, making them difficult to separate from the wastewater. ③ A small portion of the oil is in a dissolved state. Oily wastewater is often treated with oil separators to recover floating oil or heavy oil.

[0003] During the treatment of oily wastewater, the wastewater is usually transported to the treatment area and allowed to passively flow through the membrane material until the oily substances in the wastewater are removed. For oily substances with larger particles, filtration can remove the oil. However, for oily substances that are in an emulsified or dissolved state and have smaller particle sizes, the oil removal effect is not ideal and requires circulation for oil removal, which is not worthwhile. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing ceramic flat sheet membrane filters for oily liquid suspended matter, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to fully remove oily substances of different particle sizes and states from wastewater.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a ceramic flat sheet membrane filter for oily liquid suspended matter, comprising a wastewater tank, a filter box, and a storage tank shared on a base frame; an oily liquid carrying demulsifier is supplied to the filter box by a mixing and conveying pipe and a demulsifier branch pipe on a separation component; a water distribution frame of a dispersion component generates an oscillating dispersion action on the oily liquid supplied in the filter box; and a demulsifier is intermittently supplied to the oily liquid supplied in the filter box through a main demulsifier of an intermittent component; and a diversion weir is formed by a high-oil-filtering membrane plate and a low-oil-filtering membrane plate of an oil removal component to apply dynamic oil removal measures to the oily liquid supplied in the filter box.

[0008] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, the separation component further includes a sewage pump fixed on the base frame, which is unidirectionally connected to the sewage tank through a sewage supply pipe, and the sewage pump is unidirectionally connected to the sewage delivery pipe; the outer end of the sewage delivery pipe is connected to a diversion pipe, and the bottom end of the diversion pipe is connected to a connecting end; the outer end of the connecting end has a rotating end, and the connecting end and the rotating end are in a rotating interconnected state.

[0009] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, wherein: a three-way connector is connected to the sewage delivery pipe, and the three-way connector is connected to the agent delivery branch pipe, the bottom end of the agent delivery branch pipe is connected to an auxiliary material pump fixed to the base frame, and the auxiliary material pump is unidirectionally connected to the storage tank through an auxiliary feed pipeline.

[0010] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, the dispersion component further includes a dual-head motor embedded in the base frame, and one output shaft of the dual-head motor is fixed to a reciprocating lead screw via a coupling; a lead screw sleeve is threaded onto the reciprocating lead screw, and a rack plate is fitted onto the lead screw sleeve. The rack plate adopts a double-sided toothed design, and a circular gear that rotates with the base frame is meshed on the outer side of the rack plate; a T-shaped guide rail groove is laterally opened at the bottom of the filter box, and a T-shaped guide rail strip fixed to the rack plate slides in the T-shaped guide rail groove.

[0011] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, wherein: the two sets of spur gears are fixed to the water distribution frame by a rotating shaft, and the water distribution frame is connected to the rotating end; the two sets of water distribution frames are provided with a pressurization chamber connected to the rotating end; and the outer side of the water distribution frame is provided with a spray hole connected to the pressurization chamber.

[0012] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, the intermittent assembly further includes a main electrode plate fixed inside the T-shaped guide rail, and a secondary electrode plate is provided inside the main electrode plate. The secondary electrode plate is fixed to the bottom of the filter box by a bracket.

[0013] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, wherein: a secondary metering valve is connected to the feed branch pipe and is triggered and controlled by the main electrode plate and the secondary electrode plate, and a main feed pump fixed to the base frame is connected to the bottom end of the feed main pipe, and the main feed pump is unidirectionally connected to the storage tank through the main feed pipeline; a main metering valve is connected to the feed main pipe and is triggered and controlled by the main electrode plate and the secondary electrode plate, and a fabric head is connected to the bottom end of the feed main pipe, the bottom end of the fabric head is provided with a spray nozzle, and the outer end of the fabric head is provided with a fan-shaped dispersion hole.

[0014] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, the oil removal assembly further includes a main bevel gear fixed to another output shaft of a dual-head motor via a coupling, and a driven bevel gear meshing on the outer side of the main bevel gear; a swing arm is fixed inside the driven bevel gear via a concentric shaft, and a swing frame slides on the protrusion of the swing arm; and slide rails that slide with the swing frame are horizontally arranged on both sides of the bottom of the filter box.

[0015] As a preferred embodiment of the ceramic flat sheet membrane filter for oily liquid suspended matter according to the present invention, wherein: a top pull rod is horizontally arranged on the outer side of the swing frame, and a limiting sleeve fixed to the filter box is slidably passed through the top pull rod; a Y-shaped rod is fixed on the top pull rod and slidably passed through the filter box; and a scraping sleeve is fixed on the inner side of the filter box and slidably passed through the Y-shaped rod; a connecting frame is fixed on the inner side of the Y-shaped rod, and an inner sliding groove that slides with the connecting frame is horizontally opened in the filter box; and the inner side of the connecting frame is fixed to the high oil filtration membrane plate and the low oil filtration membrane plate respectively, and the high oil filtration membrane plate and the low oil filtration membrane plate are distributed in an alternating manner.

[0016] As a preferred embodiment of the ceramic flat-plate membrane filter for oily liquid suspended matter according to the present invention, wherein: water collection pipes are arrayed inside the high-oil-filtration membrane plate and the low-oil-filtration membrane plate, and sealing plates that block the water collection pipes are longitudinally placed on both sides of the high-oil-filtration membrane plate and the low-oil-filtration membrane plate; the inner side of the high-oil-filtration membrane plate and the low-oil-filtration membrane plate is the membrane material end, and the outer side is the water-permeable end, and the membrane material ends of the high-oil-filtration membrane plate and the low-oil-filtration membrane plate are respectively provided with sand filter membrane, microfiltration membrane, ultrafiltration membrane, nanofiltration membrane and reverse osmosis membrane.

[0017] The beneficial effects of this invention are as follows: Wastewater containing oily substances is pre-conveyed with a demulsifier transported via a side conveyor, achieving a pre-emulsification reaction between the oily substances and the demulsifier in the wastewater. This forces the oily substances to precipitate out beforehand. Combined with an electrode plate frequency triggering mechanism, an intermittent spraying method of demulsifier is used to provide sufficient demulsifier to the oily substances in the wastewater, resulting in a post-emulsification reaction. While reserving time for the emulsification reaction, it also avoids excessive demulsifier dosage and waste. Simultaneously, an alternating oscillating water distribution and top-pull dynamic oil removal method are combined. Based on the slow flow and multiple filtration conditions of the diversion weir and membrane material, active oil removal is achieved for oily substances of different particle sizes and states, improving the oil removal rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of the overall structure of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0020] Figure 2 This is a partial structural front view of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0021] Figure 3 This is a bottom view of a partial structure of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0022] Figure 4 This is a partial structural cross-sectional view of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0023] Figure 5 This is a partial internal view of a ceramic flat-sheet membrane filter used for oily liquid suspended matter.

[0024] Figure 6 A partial side view of the separation, dispersion, and intermittent components of a ceramic flat-sheet membrane filter for use with oily liquid suspended matter.

[0025] Figure 7 This is a side cross-sectional view of the dispersion component of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0026] Figure 8 A partial bottom view of the separation and intermittent components of a ceramic flat-panel membrane filter used for oily liquid suspended matter.

[0027] Figure 9 Rear view of the oil removal assembly of a ceramic flat sheet membrane filter for oily liquid suspended matter.

[0028] Figure 10 This is a partial bottom view of the oil removal assembly of a ceramic flat sheet membrane filter used for oily liquid suspended matter.

[0029] Figure 11 Exploded views of the high-oil-filtration membrane plate and the low-oil-filtration membrane plate of a ceramic flat sheet membrane filter for oily liquid suspended matter.

[0030] In the diagram: 1. Wastewater tank; 2. Filter box; 3. Storage tank; 41. Wastewater pump; 42. Sewage delivery pipe; 43. Diversion pipe; 44. Connecting end; 45. Rotating end; 46. T-joint; 47. Delivery branch pipe; 48. Auxiliary material pump; 51. Dual-head motor; 52. Reciprocating lead screw; 53. Lead screw sleeve; 54. Rack plate; 55. Circular gear; 56. Water distribution frame; 57. Pressure boosting chamber; 58. Spray nozzle; 6. T-shaped guide rail groove; 7. T-shaped guide rail strip; 81. Main electrode plate; 82. Auxiliary electrode plate; 83. Auxiliary metering valve; 84. Main material pump; 85. Delivery main pipe; 8 6. Main metering valve; 87. Fabric head; 88. Spray nozzle; 9. Dispersion hole; 101. Main bevel gear; 102. Driven bevel gear; 103. Swing arm; 104. Swing frame; 105. Top tie rod; 106. Y-shaped rod; 107. Connecting frame; 108. High-pressure oil filter plate; 109. Low-pressure oil filter plate; 11. Slide rail; 12. Limiting sleeve; 13. Scraping sleeve; 14. Inner slide groove; 15. Water collection pipe; 16. Sealing plate; 17. Sand filter membrane; 18. Microfiltration membrane; 19. Ultrafiltration membrane; 20. Nanofiltration membrane; 21. Reverse osmosis membrane; 22. Liquid level sensor. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1, referring to Figures 1 to 11 This is the first embodiment of the present invention. This embodiment provides a ceramic flat sheet membrane filter for oily liquid suspended matter, including a wastewater tank 1, a filter box 2 and a storage tank 3 shared on a base frame. The filter box 2 is supplied with oily liquid carrying demulsifier by a wastewater delivery pipe 42 and a storage branch pipe 47 on a separation component, so as to realize the pre-emulsification reaction of oily substances and demulsifier in wastewater, and force the oily substances to precipitate out in advance.

[0035] Specifically, it also includes a sewage pump 41 fixed on the base frame, which is connected to the sewage tank 1 in one direction through a sewage supply pipe and a sewage delivery pipe 42 in one direction. The sewage pump 41 delivers the oily wastewater that has been added to the sewage tank 1 in advance through the sewage supply pipe and then through the sewage delivery pipe 42 to the filter box 2. The liquid level sensor 22 embedded in the sewage tank 1 monitors the liquid level of the oily wastewater in the sewage tank 1 in real time so that it can be added to the sewage tank 1 in a timely manner through the sewage filling pipe reserved at the rear of the sewage tank 1.

[0036] The outer end of the sewage pipe 42 is connected to a diversion pipe 43, and the bottom end of the diversion pipe 43 is connected to a connecting end 44. The outer end of the connecting end 44 is rotated to a rotating end 45, and the connecting end 44 and the rotating end 45 are in a rotating interconnected state. The oily wastewater delivered to the sewage pipe 42 is divided into two paths by the diversion pipe 43, and then sequentially passes through two sets of connecting ends 44 and rotating ends 45 for zoned transportation to prevent the oily wastewater from turbulent flow.

[0037] Specifically, a three-way connector 46 is connected to the sewage pipe 42, and the three-way connector 46 is connected to the agent delivery branch pipe 47. The bottom end of the agent delivery branch pipe 47 is connected to an auxiliary material pump 48 fixed to the base frame, and the auxiliary material pump 48 is connected to the storage tank 3 in one direction through the auxiliary feeding pipeline. Sufficient demulsifier is added to the storage tank 3 in advance.

[0038] During use, while the wastewater is being transported through the wastewater delivery pipe 42, the auxiliary feed pump 48 is turned on, and the demulsifier pre-added in the storage tank 3 is delivered through the auxiliary feed pipe via the tee head 46 on the feed branch pipe 47 into the wastewater delivery pipe 42. It is then mixed with the oily wastewater being transported simultaneously, forcing the pre-mixed demulsifier to undergo a pre-demulsification reaction with the oily wastewater being transported simultaneously, causing the oily substances in the wastewater to precipitate and separate in advance.

[0039] Example 2, refer to Figures 1 to 11 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0040] The water distribution frame 56 of the dispersion component generates an oscillating dispersion action on the oily liquid supplied in the filter box 2. The alternating oscillating water distribution method quickly disperses the oily substances in the wastewater, avoiding oil leakage and incomplete removal due to agglomeration.

[0041] Specifically, it also includes a dual-head motor 51 embedded in the base frame, and one output shaft of the dual-head motor 51 is fixed to a reciprocating screw 52 through a coupling. While the sewage pipe 42 is conveying oily wastewater and the agent delivery branch pipe 47 is conveying demulsifier, the dual-head motor 51 is controlled to start and drive the reciprocating screw 52 to rotate continuously.

[0042] A screw sleeve 53 is threaded onto the reciprocating screw 52, ​​and a rack plate 54 is fitted onto the screw sleeve 53. The rack plate 54 adopts a double-sided tooth design. A circular gear 55 that rotates with the base frame is meshed on the outer side of the rack plate 54. Limiting plates that drive the circular gear 55 are placed horizontally on both sides of the rack plate 54. Through the limiting plates, the circular gear 55 is limited and prevented from disengaging during transmission, forcing the circular gear 55 to always rotate alternately in the forward and reverse directions in the double-sided tooth area of ​​the rack plate 54.

[0043] In use, the continuously rotating reciprocating lead screw 52 drives the rack plate 54, which has a double-sided tooth design, to move horizontally back and forth through the lead screw sleeve 53. Then, the rack plate 54 drives two sets of spur gears 55 to rotate alternately in the forward and reverse directions, and the alternating rotation angle of the two sets of spur gears 55 is an obtuse angle of less than 180°.

[0044] The bottom of the filter box 2 is provided with a T-shaped guide groove 6, and a T-shaped guide bar 7 fixed to the rack plate 54 slides in the T-shaped guide groove 6. The rack plate 54 moves back and forth horizontally, which drives the T-shaped guide bar 7 to slide in the T-shaped guide groove 6, providing sliding support compensation for the rack plate 54 and improving the stability of the back and forth displacement of the rack plate 54.

[0045] Specifically, two sets of spur gears 55 are fixed to the water distribution frame 56 via a rotating shaft, and the water distribution frame 56 is connected to the rotating end 45. The two sets of water distribution frames 56 are provided with a pressurizing chamber 57 connected to the rotating end 45, and the outer side of the water distribution frame 56 is provided with a spray hole 58 connected to the pressurizing chamber 57. The spray range of the spray hole 58 adopts a semi-circular design to expand the spray range of the spray hole 58.

[0046] In use, two sets of circular gears 55 rotate alternately in the forward and reverse directions, driving two sets of water distribution frames 56 to rotate back and forth at an obtuse angle of less than 180°. Then, the two sets of water distribution frames 56 drive the spray holes 58 on them to perform alternating fan-shaped spraying in the front area of ​​the filter box 2. At the same time, the oily wastewater and the demulsifier carried by the two sets of connecting ends 44 and rotating ends 45 are delivered to the pressurization chambers 57 in the two sets of water distribution frames 56, and are alternately sprayed out from the front area of ​​the filter box 2 by the fan-shaped spray holes 58. This accelerates the emulsification reaction between the oily wastewater and the simultaneously carried demulsifier, speeds up the separation of oily substances, and simultaneously improves the dispersion of oily substances, which is beneficial for subsequent oil removal operations.

[0047] like Figure 4 As shown, when the spray holes 58 on the two sets of water distribution frames 56 rotate alternately to the closest distance, the oily wastewater and demulsifier in the pressurization chamber 57 are sprayed out through the spray holes 58 and collide with each other, forcing the pre-emulsified oily substances to disperse and precipitate.

[0048] like Figure 6As shown, when the spray holes 58 on the two sets of water distribution racks 56 rotate alternately to the farthest distance, the oily wastewater and demulsifier in the pressurization chamber 57 are sprayed out through the spray holes 58 and impact the wall of the filter box 2, forcing the pre-emulsified oily substances to disperse and precipitate.

[0049] like Figure 7 As shown, when the spray holes 58 on the two sets of water distribution frames 56 rotate alternately to the center distance, the oily wastewater and demulsifier in the pressurization chamber 57 are sprayed out through the spray holes 58 and collide with the high oil filter film plate 108 and the low oil filter film plate 109 that are pulled back and forth, which also forces the pre-emulsified oily substances to disperse and precipitate.

[0050] Example 3, referring to Figures 1 to 11 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0051] Demulsifier is supplied to the gaps in the oily liquid supplied in the filter box 2 through the main delivery pipe 85 of the intermittent component. The intermittent spraying method provides sufficient demulsifier for the oily substances in the wastewater, while reserving time for the emulsification reaction and avoiding excessive demulsifier addition and waste.

[0052] Specifically, it also includes a main electrode plate 81 fixed inside the T-shaped guide rail 7, and a secondary electrode plate 82 is provided inside the main electrode plate 81. The secondary electrode plate 82 is fixed to the bottom of the filter box 2 by a bracket.

[0053] In use, when the rack plate 54 moves back and forth horizontally, it drives the T-shaped guide rail 7 to slide in the T-shaped guide rail groove 6. The T-shaped guide rail 7, which slides back and forth, drives the main electrode plate 81 on it to perform frequency contact triggering with the auxiliary electrode plate 82, which is fixed to the bottom of the filter box 2 by the bracket.

[0054] That is, when the T-shaped guide rail 7 slides outward, the main electrode plate 81 and the auxiliary electrode plate 82 on it are separated and in an untriggered state. When the T-shaped guide rail 7 slides inward to reset, the main electrode plate 81 and the auxiliary electrode plate 82 on it are in contact and in a triggered state. This process is repeated to follow the alternating water distribution frequency of the two sets of water distribution frames 56 and to trigger at the same frequency.

[0055] Specifically, the delivery branch pipe 47 is connected to the auxiliary metering valve 83, which is triggered and controlled by the main electrode plate 81 and the auxiliary electrode plate 82. When the demulsifier is supplied into the oily wastewater in the sewage pipe 42 in advance by the delivery branch pipe 47, the auxiliary metering valve 83 is triggered to open and close by the alternating main electrode plate 81 and the auxiliary electrode plate 82.

[0056] The demulsifier is intermittently mixed into the oily wastewater in the sewage pipe 42 through the delivery branch pipe 47. This provides time for the pre-mixed demulsifier to emulsify with the oily wastewater, and also avoids excessive pre-addition of demulsifier, which would affect the pre-demulsification reaction, while saving the amount of demulsifier added in advance.

[0057] Furthermore, the bottom end of the main delivery pipe 85 is connected to a main feed pump 84 fixed to the base frame. The main feed pump 84 is connected to the storage tank 3 in one direction through the main feed pipeline. The main delivery pipe 85 is connected to a main metering valve 86, which is triggered and controlled by the main electrode plate 81 and the auxiliary electrode plate 82. The main feed pump 84 supplies the demulsifier in the storage tank 3 into the main delivery pipe 85 through the main feed pipeline.

[0058] During this period, the main metering valve 86 is frequently triggered to open and close by the alternating main electrode plate 81 and the auxiliary electrode plate 82, intermittently supplying demulsifier into the main delivery pipe 85. This works in conjunction with the auxiliary metering valve 83 on the branch pipe 47 to provide sufficient demulsifier for the oily wastewater in the filter box 2. The demulsifier then undergoes a post-emulsification reaction with the oily wastewater that reaches the filter box 2, further forcing the oily substances inside to precipitate out.

[0059] The wastewater sprayed from the spray holes 58 on the two sets of alternating oscillating water distribution frames 56 accelerates the separation speed of oily substances, further improves the dispersion, and simultaneously expands the dispersion range of oily substances in the wastewater in the front end area of ​​the filter box 2.

[0060] Furthermore, the bottom end of the main delivery pipe 85 is connected to a fabric head 87, and the bottom end of the fabric head 87 is provided with a spray nozzle 88. The outer end of the fabric head 87 is provided with a fan-shaped dispersion hole 9. The demulsifier is intermittently and quantitatively delivered to the main delivery pipe 85. After being fed into the fabric head 87, it is sprayed downwards from the spray nozzle 88, which serves as the main channel, and mixes with the oily wastewater accumulated in the front end area of ​​the filter box 2, resulting in a post-emulsification reaction.

[0061] The demulsifier supplied into the fabric head 87 is simultaneously sprayed outward through the fan-shaped dispersion holes 9. It reacts with the oily wastewater in the high-oil filter plate 108 and low-oil filter plate 109 areas that are subsequently pulled back and forth, and undergoes a post-emulsification reaction. This expands the dispersion range of the demulsifier and also increases the post-emulsification reaction area of ​​the oily wastewater, thereby improving the degree of dispersion and precipitation of oily substances in the wastewater.

[0062] Example 4, refer to Figures 1 to 11 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0063] The high-filtration membrane plate 108 and the low-filtration membrane plate 109 of the oil removal component form a diversion weir, which applies dynamic oil removal measures to the oily liquid supplied in the filter box 2. The top-pull dynamic oil removal method is adopted. Based on the slow flow and multiple filtration conditions of the diversion weir and the membrane material, the active oil removal effect is achieved in conjunction with the oily substances of different particle sizes and states, thereby improving the oil removal rate.

[0064] Specifically, it also includes a main bevel gear 101 fixed to another output shaft of the dual-head motor 51 via a coupling, and a secondary bevel gear 102 meshes with the outer side of the main bevel gear 101. A swing arm 103 is fixed inside the secondary bevel gear 102 via a concentric shaft, and a swing frame 104 slides on the protrusion of the swing arm 103. Slide rails 11 are horizontally placed on both sides of the bottom of the filter box 2 and slide with the swing frame 104. The slide rails 11 play a sliding limit role for the swing frame 104 that swings back and forth horizontally, so as to prevent the swing frame 104 from shaking and tilting during horizontal movement.

[0065] Specifically, a top pull rod 105 is horizontally placed on the outer side of the frame 104, and a limiting sleeve 12 fixed to the filter box 2 slides through the top pull rod 105. The limiting sleeve 12 provides sliding support for the top pull rod 105 as it moves back and forth, improving the stability of the top pull rod 105's long-distance pulling action. A Y-shaped rod 106 is fixed on the top pull rod 105 and slides through the filter box 2, and a scraping sleeve 13 is fixed on the inner side of the filter box 2 and slides through the Y-shaped rod 106. The scraping sleeve 13 scrapes away residual impurities adhering to the Y-shaped rod 106, preventing impurities from adhering to the Y-shaped rod 106 and affecting the smoothness of its back and forth pulling action, while also preventing wastewater leakage and pollution of the outside world.

[0066] A connecting frame 107 is fixed to the inner side of the Y-shaped rod 106, and an inner sliding groove 14 that slides with the connecting frame 107 is opened laterally inside the filter box 2. The inner sliding groove 14 provides sliding support compensation for the horizontally moving connecting frame 107, thereby improving its operational stability. The inner side of the connecting frame 107 is fixed to the high oil filter film plate 108 and the low oil filter film plate 109 respectively. The high oil filter film plate 108 and the low oil filter film plate 109 are distributed in an alternating manner. The high oil filter film plate 108 and the low oil filter film plate 109 form a diversion weir in the rear end area of ​​the filter box 2.

[0067] The dispersed oily substances and wastewater undergo an orderly oil removal process from low to high to low to high to low, slowing down the flow rate of the wastewater and preventing splashing. This also forces the oily substances within the wastewater to be intercepted zone by zone and isolated in adjacent spaces, with the oily wastewater level below the highest point of the low-oil filter plate 109.

[0068] In use, the dual-head motor 51 drives the swing arm 103 on the bevel gear 102 to rotate continuously via the main bevel gear 101. The swing arm 103 drives the swing frame 104 to swing back and forth horizontally. The swing frame 104 drives the high oil filter film plate 108 and the low oil filter film plate 109, which form a diversion weir in the connecting frame 107, via the Y-shaped rod 106 on the top pull rod 105, to perform dynamic oil removal in the rear end area of ​​the filter box 2.

[0069] That is, the high-oil filter plate 108 and the low-oil filter plate 109, which are in a reciprocating state of pushing forward and pulling back, collide and impact with the wastewater that has been sprayed alternately from the spray holes 58 on the two sets of water distribution frames 56 and has undergone pre- and post-emulsification reactions. The oily substances in the wastewater are distributed in a low-high-low-high-low pattern to form a diversion weir on the high-oil filter plate 108 and the low-oil filter plate 109, and are gradually intercepted in the area adjacent to the high-oil filter plate 108 and the low-oil filter plate 109. The wastewater after oil removal seeps out through the last low-oil filter plate 109 and is discharged to the external pipeline through the drainage pipe reserved at the rear of the filter box 2 for subsequent wastewater treatment after oil removal.

[0070] Specifically, the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 are arrayed with water collection pipes 15, and both sides of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 are longitudinally arranged with sealing plates 16 to block the water collection pipes 15. The sealing plates 16 block the water collection pipes 15, thereby locking the wastewater after oil removal that has seeped into the water collection pipes 15 and allowing it to drain backward. The arrayed water collection pipes 15 also expand the storage space of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 for the wastewater after oil removal, increasing the treatment capacity of oily wastewater and preventing the wastewater after oil removal from seeping out again and mixing with the wastewater after oil removal, thus avoiding the burden of oil removal.

[0071] The inner side of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 is the membrane material end, and the outer side is the water seepage end. The membrane material ends of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 are respectively provided with a sand filter membrane 17, a microfiltration membrane 18, an ultrafiltration membrane 19, a nanofiltration membrane 20, and a reverse osmosis membrane 21. The oily substances are filtered and removed in multiple stages by the membrane material ends located in front of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109 in sequence through the sand filter membrane 17, the microfiltration membrane 18, the ultrafiltration membrane 19, the nanofiltration membrane 20, and the reverse osmosis membrane 21, which follow the top pulling action. The oil-removed wastewater passes through the reverse osmosis membrane 21 and permeates into the water collection pipe 15 inside the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109. Then, it seeps out sequentially from the water seepage ends on the outer side of the high-filtration oil membrane plate 108 and the low-filtration oil membrane plate 109, and finally, the oil-removed wastewater is obtained.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A ceramic flat sheet membrane filter for oily liquid suspensions, characterized by: It includes a wastewater tank (1), a filter tank (2) and a storage tank (3) shared on the base frame. The filter tank (2) is supplied with an oily liquid carrying demulsifier by a sewage delivery pipe (42) and a delivery branch pipe (47) on the separation component. The oily liquid supplied in the filter tank (2) is oscillating and dispersed by the water distribution frame (56) of the dispersion component. The oily liquid supplied in the filter tank (2) is intermittently supplied with demulsifier through the delivery main pipe (85) of the intermittent component. The oily liquid supplied in the filter tank (2) is dynamically de-oiled by the high oil filter film plate (108) and the low oil filter film plate (109) of the oil removal component forming a diversion weir.

2. The ceramic flat sheet membrane filter for oily liquid suspensions of claim 1, wherein: The separation assembly also includes a sewage pump (41) fixed on the base frame and connected to the sewage tank (1) in one direction through a sewage supply pipeline, and the sewage pump (41) is connected to the sewage delivery pipe (42) in one direction. The outer end of the sewage pipe (42) is connected to a diversion pipe (43), and the bottom end of the diversion pipe (43) is connected to a connecting end (44). The outer end of the connecting end (44) is rotated to have a rotating end (45), and the connecting end (44) and the rotating end (45) are in a rotating interconnected state.

3. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 1, characterized in that: The sewage pipe (42) is connected to a three-way connector (46), and the three-way connector (46) is connected to the agent delivery branch pipe (47). The bottom end of the agent delivery branch pipe (47) is connected to a secondary material pump (48) fixed to the base frame, and the secondary material pump (48) is connected to the storage tank (3) in one direction through the secondary feeding pipeline.

4. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 1, characterized in that: The dispersion component also includes a dual-head motor (51) embedded in the base frame, and one output shaft of the dual-head motor (51) is fixed with a reciprocating lead screw (52) via a coupling. The reciprocating lead screw (52) is threaded with a lead screw sleeve (53), and a rack plate (54) is fitted on the lead screw sleeve (53). The rack plate (54) adopts a double-sided tooth design, and a round gear (55) that rotates with the base frame is meshed on the outer side of the rack plate (54). The bottom of the filter box (2) is provided with a T-shaped guide groove (6) and a T-shaped guide bar (7) fixed to the rack plate (54) slides in the T-shaped guide groove (6).

5. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 4, characterized in that: The two sets of spur gears (55) are fixed to the water distribution frame (56) by a rotating shaft, and the water distribution frame (56) is connected to the rotating end (45). The two sets of water distribution frames (56) are provided with a pressurizing chamber (57) connected to the rotating end (45), and the outer side of the water distribution frame (56) is provided with a spray hole (58) connected to the pressurizing chamber (57).

6. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 4, characterized in that: The intermittent assembly also includes a main electrode plate (81) fixed inside the T-shaped guide rail (7), and a secondary electrode plate (82) is provided inside the main electrode plate (81). The secondary electrode plate (82) is fixed to the bottom of the filter box (2) by a bracket.

7. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 6, characterized in that: The delivery branch pipe (47) is connected to a secondary metering valve (83), which is triggered and controlled by the main electrode plate (81) and the secondary electrode plate (82). The bottom end of the delivery main pipe (85) is connected to a main material pump (84) fixed to the base frame. The main material pump (84) is connected to the storage tank (3) in one direction through the main feed pipeline. The main delivery pipe (85) is connected to a main metering valve (86), which is triggered and controlled by the main electrode plate (81) and the auxiliary electrode plate (82). The bottom end of the main delivery pipe (85) is connected to a fabric head (87). The bottom end of the fabric head (87) is provided with a spray nozzle (88), and the outer end of the fabric head (87) is provided with a dispersion hole (9) in a fan shape.

8. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 1, characterized in that: The oil removal assembly also includes a main bevel gear (101) fixed to another output shaft of the double-head motor (51) via a coupling, and a secondary bevel gear (102) meshes with the outer side of the main bevel gear (101). The bevel gear (102) is fixed with a swing arm (103) through a concentric shaft, and a swing frame (104) slides on the protrusion of the swing arm (103). The bottom of the filter box (2) is provided with slide rails (11) that slide with the swing frame (104) on both sides.

9. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 8, characterized in that: A top pull rod (105) is horizontally placed on the outer side of the swing frame (104), and a limiting sleeve (12) fixed to the filter box (2) slides through the top pull rod (105). A Y-shaped rod (106) that slides through the filter box (2) is fixed on the top pull rod (105), and a scraping sleeve (13) that slides through the Y-shaped rod (106) is fixed on the inner side of the filter box (2). The Y-shaped rod (106) is fixed with a connecting frame (107) on its inner side, and the filter box (2) is provided with an inner sliding groove (14) that slides with the connecting frame (107) in the transverse direction. The inner side of the connecting frame (107) is fixed with the high oil filter plate (108) and the low oil filter plate (109) respectively. The high oil filter plate (108) and the low oil filter plate (109) are distributed in an alternating manner.

10. The ceramic flat sheet membrane filter for oily liquid suspended matter as described in claim 1, characterized in that: The high oil filtration membrane plate (108) and the low oil filtration membrane plate (109) are provided with water collection pipes (15) arranged in an array, and both sides of the high oil filtration membrane plate (108) and the low oil filtration membrane plate (109) are provided with sealing plates (16) that block the water collection pipes (15). The inner side of the high-filtration oil membrane plate (108) and the low-filtration oil membrane plate (109) is the membrane material end, and the outer side is the water permeation end. The membrane material ends of the high-filtration oil membrane plate (108) and the low-filtration oil membrane plate (109) are respectively provided with sand filter membrane (17), microfiltration membrane (18), ultrafiltration membrane (19), nanofiltration membrane (20) and reverse osmosis membrane (21).

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