Pre-filtration treatment device for reverse osmosis purification of sewage

Abstract

The invention belongs to the technical field of sewage treatment, discloses a pre-filtration treatment device for reverse osmosis purification of sewage, and aims to solve the problems proposed in the background technology, the pre-filtration treatment device comprises a precipitation tank body, the inner wall of the bottom of the precipitation tank body is communicated with a rectangular blow-off pipe, and the inner wall of one side of the precipitation tank body is communicated with a sewage conveying pipe; an arc-shaped buffer plate is fixed to the end, located on the settling tank body, of the sewage conveying pipe through screws, an overflow pipe is communicated with the interior of one side of the top of the settling tank body, the overflow pipe is communicated with a lifting pump, and the water outlet end of the lifting pump is connected with a water inlet pipe. According to the sewage treatment device, firstly, the arc-shaped buffer plate is used for carrying out blocking and speed-limiting treatment on sewage needing to be treated, sludge or particle impurities in the sewage can be effectively subjected to blocking and sinking treatment by utilizing the sinking effect of gravity and cooperating with the continuously staggered rectangular baffle plates, and supernate overflowing from the top can primarily purify the sewage; and subsequent processing problems are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a pre-filtering treatment device for sewage reverse osmosis purification. Background Art

[0002] Sewage reverse osmosis purification is a highly efficient water treatment technology that separates the solvent (water) from the solute (impurities) in the sewage under pressure through the selective osmosis of a semipermeable membrane, thereby achieving the purpose of purifying the sewage. This technology is widely used in fields such as seawater desalination, sewage treatment, and drinking water purification, and can effectively remove harmful substances such as dissolved solids, organic matter, bacteria, and viruses in water. When sewage is mixed with a large amount of sludge or other solid particles, it needs to be initially filtered to ensure that the subsequent reverse osmosis purification operation can proceed normally. Therefore, filtration treatment is required before sewage reverse osmosis purification, but there are still some problems in the operation of existing filtration treatments:

[0003] 1. In the process of filtering the existing sewage, it is impossible to effectively separate the sludge or other solid particles mixed in the sewage. As a result, when the sewage after the initial filtration treatment is subjected to subsequent reverse osmosis purification, it is very easy to cause the reverse osmosis membrane to become blocked, resulting in the subsequent reverse osmosis being unable to proceed normally.

[0004] 2. The existing sewage filtration treatment method is relatively simple, and most of them can only perform simple solid particle interception treatment, and the overall treatment effect is not ideal, which greatly increases the workload of subsequent reverse osmosis. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pre-filtering treatment device for sewage reverse osmosis purification.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A pre-filter treatment device for sewage reverse osmosis purification comprises a sedimentation box, the bottom inner wall of the sedimentation box is connected to a rectangular sewage pipe, and the inner wall of one side of the sedimentation box is connected to a sewage delivery pipe, the sewage delivery pipe is located at the end of the sedimentation box and is fixed with an arc-shaped buffer plate by screws, and the top side of the sedimentation box is connected to an overflow pipe, the overflow pipe is connected to a lift pump, and the water outlet end of the lift pump is connected to a water inlet pipe;

[0008] The water inlet pipe is connected to the inside of the filter housing away from the lifting pump, and a filter box is provided on the outside of the filter housing, a rotating shaft is rotatably installed at the axis of the filter housing, arc-shaped through grooves distributed at equal distances are opened on the inner walls around the filter housing, and an annular filter screen is bonded to the inner wall of the filter housing, a stirring blade is fixed to the outer wall of the bottom of the rotating shaft by screws, and a waterproof servo motor is connected to the axis of the top of the rotating shaft, an electromagnetic valve is fixed to the bottom of the filter housing by bolts, and a slag discharge pipe is connected to the bottom of the electromagnetic valve, a rectangular inspection port is opened on the outer wall of the top of the filter box, and an inspection door is hinged on the inner wall of the rectangular inspection port;

[0009] A connecting pipe is connected to the inner wall on one side of the bottom of the filter box, and the other end of the connecting pipe is connected to the dephosphorization tank body, a sealing cover is fixed to the top of the dephosphorization tank body by a snap lock, and a driving motor is connected to the axis of the sealing cover, the output shaft of the driving motor is connected to the stirring rod by a coupling, and a feed hopper is connected to the top end of the sealing cover, a rectangular drain pipe is connected to the inner wall on the bottom of the dephosphorization tank body, and a rectangular through groove is opened on the inner wall on one side of the rectangular drain pipe, a hollow cylindrical shell is provided in the middle of the rectangular through groove, and a servo motor is connected to the axis of the hollow cylindrical shell, arc-shaped magnet strips distributed at equal distances are bonded to the inner walls around the hollow cylindrical shell, and a PLC controller is installed on the outer wall on one side of the filter box.

[0010] Preferably, the inner wall of the sedimentation box is fixed with a first rectangular baffle and a second rectangular baffle distributed equidistantly along the inclined direction, and the first rectangular baffle and the second rectangular baffle are staggered with each other, and the sizes of the first rectangular baffle and the second rectangular baffle are adapted to the sizes of the inner wall of the sedimentation box.

[0011] Preferably, two groups of equally spaced spiral rubber scrapers and cleaning brush plates are fixed to the outer wall of the rotating shaft, and the outer walls of the spiral rubber scrapers and the cleaning brush plates are in close contact with the inner wall of the annular filter screen.

[0012] Preferably, a fixed bottom ring is welded on the inner wall of the bottom of the filter box body along the axis of the filter housing, and arc-shaped grooves distributed at equal distances are opened on the inner walls around the fixed bottom ring.

[0013] Preferably, the inner wall of one side of the bottom of the dephosphorization tank is connected to a glass pH sensor, and the glass pH sensor is connected to a PLC controller via a signal line.

[0014] Preferably, a water receiving groove is welded on the inner wall of one side of the bottom of the rectangular through groove, and a fixing plate is installed on the inner wall of the top of the rectangular through groove along the inclined direction.

[0015] Preferably, a symmetrically distributed adjusting screw is screwed on one side of the fixing plate, and an arc-shaped scraper is screwed on the middle outer wall of the adjusting screw, and the bottom outer wall of the arc-shaped scraper is in close contact with the outer wall around the hollow cylindrical shell.

[0016] Preferably, an arc-shaped block is slidably inserted into the inner wall of the arc-shaped slot, and a cylindrical filter box is welded on the top of the four arc-shaped blocks. The cylindrical filter box is a mesh structure, and the inner wall of the cylindrical filter box is filled with activated carbon particles.

[0017] Preferably, the pH value of the sewage inside the phosphorus removal tank is adjusted to 5-7, and an appropriate amount of magnetic microspheres loaded with metal oxides are added inside the feed hopper.

[0018] The beneficial effects of the present invention are:

[0019] 1. The sewage filtration treatment device of this design first uses an arc-shaped buffer plate to block and limit the speed of the sewage to be treated, and then uses the sinking effect of gravity and the continuously staggered rectangular baffles to effectively block and sink the sludge or granular impurities in the sewage, and the supernatant overflowing from the top can preliminarily purify the sewage, reducing subsequent treatment problems;

[0020] 2. The sewage filtration treatment device of this design, after the sewage is preliminarily treated, is passed into the filter housing, and the centrifugal force is used to accelerate the sinking of impurity particles, and the electromagnetic valve is used to perform timed slag discharge, so that the sewage can be further filtered and treated. The spiral rubber scraper and cleaning brush plate that rotate continuously inside can clean the annular filter in real time to avoid mesh blockage affecting the filtration efficiency, and the cylindrical filter box arranged outside can absorb and purify the sewage to remove odor, so that it can be further purified;

[0021] 3. The sewage filtration treatment device designed in this invention is to add an appropriate amount of magnetic microspheres loaded with metal oxides such as La-Fe after the sewage is double filtered and treated by adjusting it to weak acidity. 3 O 4 , the excess phosphorus in the sewage can be removed, thereby avoiding eutrophication of the discharged sewage and improving the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the overall structure of a pre-filtration treatment device for sewage reverse osmosis purification proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the overall first-view structure of a pre-filtration treatment device for sewage reverse osmosis purification proposed by the present invention;

[0024] Figure 3 A top view of the internal structure of a pre-filtration treatment device for sewage reverse osmosis purification proposed by the present invention;

[0025] Figure 4This is a schematic diagram of the partial structural disassembly of a pre-filtration treatment device for sewage reverse osmosis purification proposed by the present invention;

[0026] Figure 5 A top view of the internal structure of a filter housing of a pre-filter treatment device for sewage reverse osmosis purification proposed by the present invention;

[0027] Figure 6 A schematic diagram of the internal structure of a dephosphorization tank of a pre-filtration treatment device for wastewater reverse osmosis purification proposed by the present invention;

[0028] Figure 7 The present invention provides a side view of the internal structure of a dephosphorization tank of a pre-filtration treatment device for wastewater reverse osmosis purification.

[0029] In the figure: 1, sedimentation box; 2, rectangular sewage pipe; 3, sewage delivery pipe; 4, arc buffer plate; 5, first rectangular baffle; 6, second rectangular baffle; 7, overflow pipe; 8, lifting pump; 9, water inlet pipe; 10, filter housing; 11, filter box; 12, arc through groove; 13, annular filter screen; 14, rotating shaft; 15, stirring blade; 16, spiral rubber scraper; 17, cleaning brush plate; 18, waterproof servo motor; 19, solenoid valve; 20, slag pipe; 21, fixed bottom ring; 2 2. Arc-shaped card slot; 23. Arc-shaped card block; 24. Columnar filter box; 25. Inspection door; 26. Connecting pipe; 27. Dephosphorization tank; 28. Sealing cover; 29. ​​Driving motor; 30. Stirring rod; 31. Feed hopper; 32. Glass pH sensor; 33. Rectangular drain pipe; 34. Rectangular through slot; 35. Hollow column shell; 36. Servo motor; 37. Arc-shaped magnet bar; 38. Water receiving trough; 39. Fixed plate; 40. Adjusting screw; 41. Arc-shaped scraper; 42. PLC controller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1, reference Figure 1-7 A pre-filtration treatment device for sewage reverse osmosis purification comprises a sedimentation box 1, the bottom inner wall of the sedimentation box 1 is connected with a rectangular sewage pipe 2, and the inner wall of one side of the sedimentation box 1 is connected with a sewage delivery pipe 3, the sewage delivery pipe 3 is located at the end of the sedimentation box 1 and is fixed with an arc buffer plate 4 by screws, and the top side of the sedimentation box 1 is connected with an overflow pipe 7, and the inner wall of the sedimentation box 1 is fixed with a first rectangular baffle 5 and a second rectangular baffle 6 distributed at equal distances along the inclined direction;

[0032] The first rectangular baffle 5 and the second rectangular baffle 6 are arranged alternately, and the sizes of the first rectangular baffle 5 and the second rectangular baffle 6 are adapted to the size of the inner wall of the sedimentation box 1. The overflow pipe 7 is connected to a lifting pump 8, and the water outlet end of the lifting pump 8 is connected to a water inlet pipe 9;

[0033] The outer wall of the rotating shaft 14 is fixed with two sets of equally spaced spiral rubber scrapers 16 and cleaning brush plates 17, and the outer walls of the spiral rubber scrapers 16 and the cleaning brush plates 17 are in close contact with the inner wall of the annular filter screen 13;

[0034] After the arc-shaped buffer plate 4 is used to block and limit the speed of the sewage to be treated, the sinking effect of gravity and the continuous staggered rectangular baffles can be used to effectively block and sink the sludge or granular impurities in the sewage, and the supernatant overflowing from the top can preliminarily purify the sewage, reducing subsequent treatment problems;

[0035] The water inlet pipe 9 is connected to the inside of the filter housing 10 away from the lifting pump 8, and a filter box 11 is provided outside the filter housing 10, a rotating shaft 14 is rotatably installed at the axis of the filter housing 10, arc-shaped through grooves 12 distributed at equal distances are opened on the inner wall of the filter housing 10, and an annular filter screen 13 is bonded to the inner wall of the filter housing 10, a stirring blade 15 is fixed to the outer wall of the bottom of the rotating shaft 14 by screws, and a waterproof servo motor 18 is connected to the axis of the top of the rotating shaft 14, and a solenoid valve 19 is fixed to the bottom of the filter housing 10 by bolts;

[0036] A slag discharge pipe 20 is connected to the bottom of the solenoid valve 19, a fixed bottom ring 21 is welded on the inner wall of the bottom of the filter housing 11 at the axial position of the filter housing 10, and arc-shaped card slots 22 are opened on the inner wall around the fixed bottom ring 21 at equal distances, and arc-shaped card blocks 23 are slidably inserted into the inner wall of the arc-shaped card slot 22, and a cylindrical filter mesh box 24 is welded on the top of four arc-shaped card blocks 23, the cylindrical filter mesh box 24 is a mesh structure, and the inner wall of the cylindrical filter mesh box 24 is filled with activated carbon particles, and a rectangular inspection port is opened on the outer wall of the top of the filter housing 11, and an inspection door 25 is hinged on the inner wall of the rectangular inspection port;

[0037] A connecting pipe 26 is connected to the inner wall of one side of the bottom of the filter box 11, and the other end of the connecting pipe 26 is connected to a dephosphorization tank 27. The pH value of the sewage in the dephosphorization tank 27 is adjusted to 5-7, and an appropriate amount of magnetic microspheres loaded with metal oxides are added to the feed hopper 31. A sealing cover 28 is fixed to the top of the dephosphorization tank 27 by a snap lock, and a driving motor 29 is connected to the axis of the sealing cover 28. The output shaft of the driving motor 29 is connected to a stirring rod 30 through a coupling, and one end of the top of the sealing cover 28 is connected to the feed hopper 31. A rectangular drain pipe 33 is connected to the inner wall of the bottom of the dephosphorization tank 27, and a rectangular through groove 34 is opened on the inner wall of one side of the rectangular drain pipe 33. A water receiving groove 38 is welded to the inner wall of one side of the bottom of the rectangular through groove 34, and a fixing plate 39 is installed on the inner wall of the top of the rectangular through groove 34 along the inclined direction;

[0038] A symmetrically distributed adjusting screw rod 40 is screwed to one side of the fixing plate 39, and an arc-shaped scraper block 41 is screwed to the middle outer wall of the adjusting screw rod 40, and the bottom outer wall of the arc-shaped scraper block 41 is in close contact with the outer wall around the hollow cylindrical shell 35;

[0039] A hollow cylindrical shell 35 is provided in the middle of the rectangular through groove 34, and a servo motor 36 is connected to the axis of the hollow cylindrical shell 35, arc-shaped magnet bars 37 distributed at equal distances are bonded to the inner walls around the hollow cylindrical shell 35, and a PLC controller 42 is installed on the outer wall of one side of the filter box body 11, and a glass pH sensor 32 is connected to the inner wall of one side of the bottom of the phosphorus removal tank body 27, and the glass pH sensor 32 is connected to the PLC controller 42 through a signal line.

[0040] When the pre-filter treatment device for sewage reverse osmosis purification is used, the treatment device is first assembled and treated. After the assembly is completed, the external power supply is turned on for trial operation. After normal operation, the sewage to be treated is connected to the sewage delivery pipe 3 and passed into the sedimentation box 1. The arc-shaped buffer plate 4 inside the sewage will block the sewage to reduce the flow rate. After that, the sludge and other solid impurities in the sewage are restricted by the top multiple interlaced first rectangular baffles 5 and second rectangular baffles 6, and the flow rate is further reduced. Therefore, with the action of gravity, the sludge and solid impurity particles will sink and be discharged from the bottom rectangular sewage pipe 2. After that, the precipitated sewage supernatant is discharged from the top overflow pipe 7 and is pumped into the filter housing 10 by the lifting pump 8. At this time, the waterproof servo motor 18 drives the rotating shaft 14 to rotate, so that the sewage is stirred by the stirring blade 15, so that the impurities in the sewage are further gathered and precipitated by the centrifugal force. In order to avoid clogging of the holes of the annular filter 13, the spiral rubber scraper 16 and the cleaning brush plate 17 arranged on the inner wall thereof rotate continuously to clean it.

[0041] Example 2, reference Figure 1-7A pre-filtration treatment device for sewage reverse osmosis purification comprises a sedimentation box 1, the bottom inner wall of the sedimentation box 1 is connected with a rectangular sewage pipe 2, and the inner wall of one side of the sedimentation box 1 is connected with a sewage delivery pipe 3, the sewage delivery pipe 3 is located at the end of the sedimentation box 1 and is fixed with an arc buffer plate 4 by screws, and the top side of the sedimentation box 1 is connected with an overflow pipe 7, and the inner wall of the sedimentation box 1 is fixed with a first rectangular baffle 5 and a second rectangular baffle 6 distributed at equal distances along the inclined direction;

[0042] The first rectangular baffle 5 and the second rectangular baffle 6 are arranged alternately, and the sizes of the first rectangular baffle 5 and the second rectangular baffle 6 are adapted to the size of the inner wall of the sedimentation box 1. The overflow pipe 7 is connected to a lifting pump 8, and the water outlet end of the lifting pump 8 is connected to a water inlet pipe 9;

[0043] The outer wall of the rotating shaft 14 is fixed with two sets of equally spaced spiral rubber scrapers 16 and cleaning brush plates 17, and the outer walls of the spiral rubber scrapers 16 and the cleaning brush plates 17 are in close contact with the inner wall of the annular filter screen 13;

[0044] The water inlet pipe 9 is connected to the inside of the filter housing 10 away from the lifting pump 8, and a filter box 11 is provided outside the filter housing 10, a rotating shaft 14 is rotatably installed at the axis of the filter housing 10, arc-shaped through grooves 12 distributed at equal distances are opened on the inner wall of the filter housing 10, and an annular filter screen 13 is bonded to the inner wall of the filter housing 10, a stirring blade 15 is fixed to the outer wall of the bottom of the rotating shaft 14 by screws, and a waterproof servo motor 18 is connected to the axis of the top of the rotating shaft 14, and a solenoid valve 19 is fixed to the bottom of the filter housing 10 by bolts;

[0045] After the sewage is preliminarily treated, it is passed into the filter housing 10, and the centrifugal force is used to accelerate the sinking of impurity particles, and the electromagnetic valve 19 is used to perform timed slag discharge, so that the sewage can be further filtered. The spiral rubber scraper 16 and the cleaning brush plate 17 that rotate continuously inside can clean the annular filter screen 13 in real time to avoid mesh blockage affecting the filtering efficiency, and the cylindrical filter screen box 24 arranged outside can absorb and purify the sewage to remove odor, so that it can be further purified.

[0046] A slag discharge pipe 20 is connected to the bottom of the solenoid valve 19, a fixed bottom ring 21 is welded on the inner wall of the bottom of the filter housing 11 at the axial position of the filter housing 10, and arc-shaped card slots 22 are opened on the inner wall around the fixed bottom ring 21 at equal distances, and arc-shaped card blocks 23 are slidably inserted into the inner wall of the arc-shaped card slot 22, and a cylindrical filter mesh box 24 is welded on the top of four arc-shaped card blocks 23, the cylindrical filter mesh box 24 is a mesh structure, and the inner wall of the cylindrical filter mesh box 24 is filled with activated carbon particles, and a rectangular inspection port is opened on the outer wall of the top of the filter housing 11, and an inspection door 25 is hinged on the inner wall of the rectangular inspection port;

[0047] A connecting pipe 26 is connected to the inner wall of one side of the bottom of the filter box 11, and the other end of the connecting pipe 26 is connected to a dephosphorization tank 27. The pH value of the sewage in the dephosphorization tank 27 is adjusted to 5-7, and an appropriate amount of magnetic microspheres loaded with metal oxides are added to the feed hopper 31. A sealing cover 28 is fixed to the top of the dephosphorization tank 27 by a snap lock, and a driving motor 29 is connected to the axis of the sealing cover 28. The output shaft of the driving motor 29 is connected to a stirring rod 30 through a coupling, and one end of the top of the sealing cover 28 is connected to the feed hopper 31. A rectangular drain pipe 33 is connected to the inner wall of the bottom of the dephosphorization tank 27, and a rectangular through groove 34 is opened on the inner wall of one side of the rectangular drain pipe 33. A water receiving groove 38 is welded to the inner wall of one side of the bottom of the rectangular through groove 34, and a fixing plate 39 is installed on the inner wall of the top of the rectangular through groove 34 along the inclined direction;

[0048] After the sewage is double-filtered and adjusted to weak acidity, an appropriate amount of magnetic microspheres loaded with metal oxides such as La-Fe are added. 3 O 4 , it can remove excess phosphorus in sewage, thereby avoiding eutrophication of discharged sewage and improving the treatment effect of sewage;

[0049] A symmetrically distributed adjusting screw rod 40 is screwed to one side of the fixing plate 39, and an arc-shaped scraper block 41 is screwed to the middle outer wall of the adjusting screw rod 40, and the bottom outer wall of the arc-shaped scraper block 41 is in close contact with the outer wall around the hollow cylindrical shell 35;

[0050] A hollow cylindrical shell 35 is provided in the middle of the rectangular through groove 34, and a servo motor 36 is connected to the axis of the hollow cylindrical shell 35, arc-shaped magnet bars 37 distributed at equal distances are bonded to the inner walls around the hollow cylindrical shell 35, and a PLC controller 42 is installed on the outer wall of one side of the filter box body 11, and a glass pH sensor 32 is connected to the inner wall of one side of the bottom of the phosphorus removal tank body 27, and the glass pH sensor 32 is connected to the PLC controller 42 through a signal line.

[0051] When the pre-filter treatment device for sewage reverse osmosis purification is used, the treatment device is first assembled and treated. After the assembly is completed, the external power supply is turned on for trial operation. After normal operation, the sewage to be treated is connected to the sewage delivery pipe 3 and passed into the sedimentation box 1. The arc-shaped buffer plate 4 inside the sewage will block the sewage to reduce the flow rate. After that, the sludge and other solid impurities in the sewage are restricted by the top multiple interlaced first rectangular baffles 5 and second rectangular baffles 6. The flow rate is further reduced, so that with the action of gravity, the sludge and solid impurity particles will sink and be discharged from the bottom rectangular sewage pipe 2. After that, the precipitated sewage supernatant is discharged from the top overflow pipe 7 and is pumped into the filter housing 10 by the lifting pump 8. At this time, the waterproof servo motor 18 drives the rotating shaft 14 to rotate, so that the sewage is stirred by the stirring blade 15, so that the impurities in the sewage are further gathered and precipitated by the centrifugal force. In order to avoid clogging of the holes of the annular filter 13, the spiral rubber scraper 16 and the cleaning brush plate 17 arranged on the inner wall thereof are continuously rotated to clean it.

[0052] The precipitated impurities will be discharged by the solenoid valve 19 when it is opened at a fixed time. The filtered sewage will then pass through the cylindrical filter box 24, and the activated carbon particles inside it will filter and purify the sewage to remove odor, thereby achieving further filtration treatment. When the filtered sewage contains a large amount of phosphorus, it will be passed into the dephosphorization tank 27. At this time, the pH value of the sewage will be adjusted to between 5 and 7 using an external acidic material, and then an appropriate amount of magnetic microspheres loaded with metal oxides such as La-Fe 3 O 4 , thereby stirring the sewage, the phosphorus in the sewage will react with the metal oxide loaded on the magnetic microspheres to generate metal phosphate colloidal particles for precipitation, and then discharged from the bottom rectangular drain pipe 33. During the discharge process, the metal phosphate colloidal particles will be adsorbed by the arc-shaped magnet bar 37, thereby clinging to the outer wall of the hollow cylindrical shell 35, and the hollow cylindrical shell 35 is constantly rotating. When the hollow cylindrical shell 35 rotates to the top, its arc-shaped scraper 41 is in close contact with the outer wall of the hollow cylindrical shell 35, thereby removing the adsorbed metal phosphate colloidal particles, thereby eliminating a large amount of phosphorus in the sewage and performing multiple filtration treatments.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pre-filtration treatment device for sewage reverse osmosis purification, comprising a sedimentation box (1), characterized in that: The bottom inner wall of the sedimentation box (1) is connected to a rectangular sewage pipe (2), and the inner wall of one side of the sedimentation box (1) is connected to a sewage conveying pipe (3), the sewage conveying pipe (3) is located at the end of the sedimentation box (1) and is fixed with an arc-shaped buffer plate (4) by screws, and the top side of the sedimentation box (1) is connected to an overflow pipe (7), the overflow pipe (7) is connected to a lifting pump (8), and the water outlet end of the lifting pump (8) is connected to a water inlet pipe (9); The water inlet pipe (9) is connected to the inside of the filter housing (10) away from the lifting pump (8), and a filter box (11) is provided outside the filter housing (10). A rotating shaft (14) is rotatably installed at the axis of the filter housing (10). The inner walls around the filter housing (10) are provided with arc-shaped through grooves (12) distributed at equal distances, and an annular filter screen (13) is bonded to the inner wall of the filter housing (10). A stirring blade (15) is fixed to the outer wall at the bottom of the rotating shaft (14) by screws, and a waterproof servo motor (18) is connected to the axis of the top of the rotating shaft (14). A solenoid valve (19) is fixed to the bottom of the filter housing (10) by bolts, and a slag discharge pipe (20) is connected to the bottom of the solenoid valve (19). A rectangular inspection port is opened on the outer wall at the top of the filter box (11), and an inspection door (25) is hinged on the inner wall of the rectangular inspection port. The inner wall of one side of the bottom of the filter box (11) is connected to a connecting pipe (26), and the other end of the connecting pipe (26) is connected to a dephosphorization tank (27). The top of the dephosphorization tank (27) is fixed with a sealing cover (28) by a buckle lock, and the axis of the sealing cover (28) is connected to a driving motor (29), the output shaft of the driving motor (29) is connected to a stirring rod (30) by a coupling, and one end of the top of the sealing cover (28) is connected to a feeding hopper (31), and the dephosphorization tank (27) is connected to a feeding hopper (31). The inner wall at the bottom of the phosphorus tank (27) is connected to a rectangular drain pipe (33), and a rectangular through groove (34) is formed on the inner wall of one side of the rectangular drain pipe (33). A hollow cylindrical shell (35) is provided in the middle of the rectangular through groove (34), and a servo motor (36) is connected to the axis of the hollow cylindrical shell (35). Arc-shaped magnet strips (37) distributed at equal distances are bonded to the inner walls around the hollow cylindrical shell (35), and a PLC controller (42) is installed on the outer wall of one side of the filter box (11).

2. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 1, characterized in that: The inner wall of the sedimentation box (1) is fixed with a first rectangular baffle (5) and a second rectangular baffle (6) which are equidistantly distributed along an inclined direction, and the first rectangular baffle (5) and the second rectangular baffle (6) are staggered with each other, and the sizes of the first rectangular baffle (5) and the second rectangular baffle (6) are adapted to the sizes of the inner wall of the sedimentation box (1).

3. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 1, characterized in that: Two groups of equally spaced spiral rubber scrapers (16) and cleaning brush plates (17) are fixed to the outer wall of the rotating shaft (14), and the outer walls of the spiral rubber scrapers (16) and the cleaning brush plates (17) are in close contact with the inner wall of the annular filter screen (13).

4. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 1, characterized in that: A fixed bottom ring (21) is welded on the inner wall of the bottom of the filter box (11) along the axis of the filter housing (10), and arc-shaped grooves (22) are equidistantly distributed on the inner walls around the fixed bottom ring (21).

5. The pre-filtration treatment device for sewage reverse osmosis purification according to claim 1 is characterized in that: The inner wall of one side of the bottom of the dephosphorization tank (27) is connected to a glass pH sensor (32), and the glass pH sensor (32) is connected to a PLC controller (42) via a signal line.

6. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 1, characterized in that: The rectangular drain pipe (33) is welded with a water receiving groove (38) on the inner wall of one side of the bottom of the rectangular through groove (34), and a fixing plate (39) is installed along the inclined direction on the inner wall of the top of the rectangular through groove (34).

7. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 6, characterized in that: A symmetrically distributed adjusting screw rod (40) is screwed to one side of the fixing plate (39), and an arc-shaped scraper block (41) is screwed to the middle outer wall of the adjusting screw rod (40), and the bottom outer wall of the arc-shaped scraper block (41) is in close contact with the outer wall around the hollow cylindrical shell (35).

8. A pre-filtration treatment device for sewage reverse osmosis purification according to claim 4, characterized in that: The inner wall of the arc-shaped slot (22) is slidably plugged with an arc-shaped block (23), and the tops of the four arc-shaped blocks (23) are welded with a columnar filter mesh box (24), the columnar filter mesh box (24) is a mesh structure, and the inner wall of the columnar filter mesh box (24) is filled with activated carbon particles.

9. The pre-filtration treatment device for sewage reverse osmosis purification according to claim 1, characterized in that: The pH value of the sewage inside the dephosphorization tank (27) is adjusted to 5-7, and a proper amount of magnetic microspheres loaded with metal oxides are added inside the feed hopper (31).

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