Reverse osmosis wastewater treatment equipment and method for water treatment plant

Abstract

The present invention relates to the field of wastewater treatment technology, and more particularly to a reverse osmosis wastewater treatment device and method for a water treatment plant, comprising a sedimentation barrel for wastewater sedimentation, wherein the annular barrel wall of the sedimentation barrel is provided with a drainage opening, and the bottom wall of the sedimentation barrel is provided with a sewage outlet for discharging the sediment; and further comprising a filter press unit, which is disposed within the sedimentation barrel and is used to separate the wastewater from the sediment, and the filter press unit includes a filter press portion that can be moved up and down within the sedimentation barrel. The filter press unit used in the present invention can filter the sediment generated during wastewater treatment without requiring the sediment to stand, thereby effectively improving the efficiency of wastewater treatment. Furthermore, during the filtration process, the treated wastewater can be discharged in real time, reducing the step of discharging the wastewater through a water pump.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to reverse osmosis wastewater treatment equipment and method for a water treatment plant. Background Art

[0002] Reverse osmosis technology has been widely used in the recycling and utilization of industrial wastewater. Reverse osmosis effluent accounts for about 75% of reverse osmosis inlet water, and the rest is discharged as reverse osmosis wastewater. Reverse osmosis wastewater is industrial high-salt wastewater. If reverse osmosis wastewater is directly discharged, it will waste water resources and damage the ecological environment.

[0003] In order to ensure that the discharge of reverse osmosis wastewater meets the discharge requirements, it is necessary to remove heavy metal ions from the reverse osmosis wastewater. Existing reverse osmosis wastewater is usually treated by biological methods, chemical precipitation methods, adsorption methods and the like. When treating reverse osmosis wastewater with the existing chemical precipitation method, the wastewater after grid filtration is first poured into a sedimentation tank, and then an appropriate amount of chemical precipitant is added to the wastewater. The chemical precipitant then reacts with the heavy metal ions in the wastewater to form a precipitate, and then the precipitate is allowed to settle to the bottom of the sedimentation tank by standing, and the treated wastewater is then extracted from the sedimentation tank. However, the treated wastewater usually needs to be left to stand for a period of time when separated from the precipitate, thereby increasing the time required for wastewater treatment. In addition, after the wastewater is separated from the precipitate, the precipitate needs to be cleaned by existing sedimentation cleaning equipment or manually, resulting in a low degree of integration and increased labor costs for wastewater treatment.

[0004] Therefore, there is an urgent need to provide treatment equipment that can improve wastewater treatment efficiency and reduce wastewater treatment costs. Summary of the Invention

[0005] Based on this, it is necessary to provide a reverse osmosis wastewater treatment device and method for a water treatment plant, aiming to solve the problems caused by heavy metal ion treatment of existing reverse osmosis wastewater.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a reverse osmosis wastewater treatment equipment for a water treatment plant, comprising: a sedimentation barrel for wastewater sedimentation, a drainage opening is opened on the annular barrel wall of the sedimentation barrel, and a sewage outlet for discharging sediment is opened on the bottom wall of the sedimentation barrel.

[0007] It also includes a filter press unit, which is arranged in a sedimentation barrel and is used to separate wastewater from sediment. The filter press unit includes a filter press part that can move up and down and is arranged in the sedimentation barrel. During the descent of the filter press part, the sediment is pushed toward the sewage outlet and the drainage opening is opened at the same time. The opened drainage opening is used to discharge the filtered wastewater. The filter press part is connected to an adjustment part that is arranged on the sedimentation barrel and is used to change the filtering mode of the filter press part.

[0008] The filter press section includes filter plates 1 and 2 which are distributed above and below near the upper side of the sedimentation barrel. Both filter plates 1 and 2 are provided with filter through holes. Filter cloths are provided in the multiple filter through holes on filter plate 2. A sealing lifting plate which is slidably connected to the drainage opening is installed on the vertical side wall of filter plate 1, and the lower end of the sealing lifting plate slides through the sedimentation barrel.

[0009] It also includes a sealing unit, which is arranged on the bottom wall of the sedimentation barrel and is used to control the opening and closing of the sewage outlet.

[0010] After the filter press part descends to the bottom of the sedimentation barrel, the sealing unit is pushed by the regulating part to open the sewage outlet, and the filter press part squeezes the sediment out of the sewage outlet.

[0011] Preferably, an extrusion protrusion is integrally formed at the lower end of the second filter plate, and the filter holes on the upper and lower sides are staggered. A plurality of blocking columns corresponding to the positions of the filter holes on the second filter plate are installed at the lower end of the filter plate.

[0012] Preferably, the filter press part also includes multiple support members installed on the upper end of filter plate 2, the upper ends of the multiple support members slide through filter plate 1 and are jointly installed with a linkage top plate, and multiple reset springs are installed between the lower end of the linkage top plate and filter plate 1.

[0013] Preferably, the adjustment part includes two spring telescopic rods installed on both sides of the upper end of the sedimentation barrel through ear seats, and an adjustment member is installed on the upper ends of the two spring telescopic rods. A plurality of traction ropes are installed on both sides of the lower end of the adjustment member, and the lower ends of the traction ropes pass through the corresponding filter holes on the filter plate one and are fixedly connected to the filter plate two.

[0014] Preferably, the sealing unit includes a sewage pipe installed on the bottom wall of the sedimentation barrel and coaxially distributed with the sewage outlet, a sealing cover is hinged at the lower end of the sewage pipe, a downward pressure part connected to the adjustment part is provided on the outer periphery of the sewage pipe, and a cover plate limiting part connected to the bottom wall of the sedimentation barrel is provided on the side of the sewage pipe away from the hinged connection between the sewage pipe and the sealing cover.

[0015] Preferably, the pressing portion includes a pressing member arranged on the outer periphery of the sewage pipe, and two transmission members are symmetrically installed on the pressing member, which slide through the corresponding ear seats and are connected to the adjusting member. A pushing plate is hingedly connected to the side of the lower end of the pressing member close to the cover plate limiting portion through a hinge frame, and a baffle plate fixedly connected to the pressing member is provided on the side of the pushing plate close to the sewage pipe, and the baffle plate is used to limit the pushing plate to an inclined state.

[0016] Preferably, the pressing portion further comprises two connecting seats symmetrically mounted on the lower end of the pressing member, and a supporting member located at the lower end of the sealing cover is mounted between the two connecting seats.

[0017] Preferably, the cover plate limiting portion includes a limiting frame installed on the bottom wall of the sedimentation barrel through a mounting bracket and opening toward the sealing cover, a sliding channel is provided on the upper frame wall of the limiting frame, a limiting block located at the lower end of the sealing cover is slidably connected in the limiting frame, a telescopic spring is installed between the limiting frame and the limiting block, a force-bearing block located in the sliding channel is installed on the upper end of the limiting block, and an inclined surface is provided at the end of the limiting block located at the lower end of the sealing cover.

[0018] Preferably, the movement of the filter press part is achieved by a driving part.

[0019] In addition, the present invention also provides a method for treating reverse osmosis wastewater in a water treatment plant, which specifically includes the following steps: S1: injecting wastewater into a sedimentation barrel installed at a working position. When the wastewater is injected into the sedimentation barrel to a certain height, flocculant and chemical precipitant are poured into the sedimentation barrel, and heavy metal ions in the wastewater are precipitated.

[0020] S2: After no more precipitation is produced in the wastewater, the filter press moves downward from the upper end of the sedimentation barrel. The moving filter press pushes the precipitation in the wastewater downward. At the same time, the filter press opens the drainage opening. The treated wastewater passes through the filter press and flows out through the drainage opening in real time.

[0021] S3: As the filter press continues to move downward, the wastewater in the sedimentation barrel gradually decreases, and the generated sediment accumulates downward. When the filter press moves to a certain depth in the sedimentation barrel, the adjustment part seals the filter press, and the filter press continues to move downward and pushes the sealing unit through the adjustment part. The sealing unit opens the sewage outlet, and the filter press discharges the sediment through the sewage outlet.

[0022] S4: After the filter press contacts the bottom wall of the sedimentation barrel, it moves upward, the adjustment part resets and drives the sealing unit to reseal the sewage outlet.

[0023] S5: Repeat steps S1-S4 until all wastewater is treated and the work is completed.

[0024] To sum up, the present invention includes the following beneficial effects: 1. The filter press unit and sealing unit adopted in the present invention cooperate with each other and are driven by the driving part, which can realize the functions of filtering the treated wastewater, discharging the wastewater and discharging the sediment, thereby realizing the multi-functional function of one machine, reducing energy consumption and improving the practicality of the wastewater treatment equipment.

[0025] 2. The filter press unit used in the present invention can filter the wastewater after the precipitation is produced, without the need to let the precipitation stand, effectively improving the efficiency of wastewater treatment, and the treated wastewater can be discharged in real time during the filtration process, reducing the step of discharging the wastewater through a water pump.

[0026] 3. The filter press unit and the sealing unit used in the present invention cooperate to discharge the filtered sediment from the sedimentation barrel, reducing the number of sediment cleaning steps for staff and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of the present invention from a first viewing angle is shown.

[0029] Figure 2 A schematic diagram of the three-dimensional structure of the present invention from a second viewing angle is shown.

[0030] Figure 3 A front view of the present invention is shown.

[0031] Figure 4 A left side view of the present invention is shown.

[0032] Figure 5 Shown Figure 4 Cross-sectional view of AA in the figure.

[0033] Figure 6 Shown Figure 5 Magnified view of area B.

[0034] Figure 7 A three-dimensional structural cross-sectional view of the sedimentation barrel of the present invention is shown.

[0035] Figure 8 The figure shows a schematic diagram of the three-dimensional structure of the filter press unit of the present invention.

[0036] Figure 9 The diagram shows the working state changes of the present invention when treating wastewater.

[0037] The above drawings include the following reference numerals: 1, sedimentation barrel; 10, drainage opening; 11, sewage outlet; 12, wastewater inlet pipe; 13, reagent delivery pipe; 14, flow guide frame; 2, filter press unit; 20, filter press section; 200, filter plate 1; 201, filter plate 2; 202, filter through hole; 203, filter cloth; 204, blocking column; 205, sealing lifting plate; 206, support member; 207, linkage top plate; 208, reset spring; 21, adjustment section; 210, spring extension Retraction rod; 211, adjustment part; 212, traction rope; 3, sealing unit; 30, sewage pipe; 31, sealing cover; 32, pressing part; 320, pressing part; 321, transmission part; 322, pushing plate; 323, baffle plate; 324, connecting seat; 325, supporting part; 33, cover plate limiting part; 330, limiting frame; 331, sliding channel; 332, limiting block; 333, telescopic spring; 334, force block; 4, driving part; 40, positioning frame; 41, hydraulic push rod. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] See Figure 1 and Figure 7 A reverse osmosis wastewater treatment equipment for a water treatment plant includes a sedimentation barrel 1 for wastewater sedimentation, a drainage opening 10 is opened on the annular barrel wall of the sedimentation barrel 1, and a sewage outlet 11 for discharging sediment is opened on the bottom wall of the sedimentation barrel 1.

[0040] During specific work, the sedimentation barrel 1 is installed at the working position before wastewater treatment. The working position is provided with a working space for the wastewater treatment process. The sedimentation barrel 1 is used for precipitating heavy metal ions in the wastewater, the drainage opening 10 is used for discharging the treated wastewater, and the sewage outlet 11 is used for discharging the heavy metal ion precipitation.

[0041] See Figure 1 、 Figure 2 and Figure 7 A wastewater inlet pipe 12 is installed near the upper end of the annular barrel wall of the sedimentation barrel 1. Two reagent delivery pipes 13 are also installed near the upper end of the annular barrel wall of the sedimentation barrel 1. A guide frame 14 is installed near the drainage opening 10 on the outer ring surface of the sedimentation barrel 1.

[0042] During specific work, after the installation of the sedimentation barrel 1 is completed, the wastewater is treated. A liquid level signaler (existing technology and not shown in the figure) is installed in the sedimentation barrel 1. Existing electrically controlled valves (not shown in the figure) are provided on the wastewater input pipe 12 and the reagent delivery pipe 13. The wastewater enters the sedimentation barrel 1 through the wastewater input pipe 12. When the liquid level of the wastewater injected into the sedimentation barrel 1 rises to the height of the liquid level signaler, the liquid level signaler sends a signal to the controller. The controller controls the electrically controlled valve on the wastewater input pipe 12 to close through an electrical signal. At this time, the wastewater is no longer injected into the sedimentation barrel 1. At the same time, the controller controls the electrically controlled valves on the two reagent delivery pipes 13 to open through an electrical signal. The flocculant and the chemical precipitant are respectively delivered into the sedimentation barrel 1 through the two reagent delivery pipes 13. When the required amounts of flocculant and chemical precipitant are delivered, the electrically controlled valves on the two reagent delivery pipes 13 are closed, and the flocculant and chemical precipitant in the sedimentation barrel 1 are delivered to react with the heavy metal ions in the wastewater to produce precipitation. In one possible implementation, wastewater can be directly injected into the sedimentation barrel 1 from the opening at the upper end of the sedimentation barrel 1, and then the flocculant and chemical precipitant required for precipitation are poured into the sedimentation barrel 1 to react with the heavy metal ions in the wastewater and produce precipitation.

[0043] See Figures 1-4 The reverse osmosis wastewater treatment equipment of the water treatment plant also includes a filter press unit 2, which is arranged in the sedimentation barrel 1 and is used to separate wastewater from sediment. The filter press unit 2 includes a filter press part 20 that can be moved up and down in the sedimentation barrel 1. The movement of the filter press part 20 is realized by the driving part 4. Specifically, the precipitation in the wastewater is observed. When no more precipitation is produced in the wastewater, the driving part 4 controls the filter press part 20 to descend. During the descent of the filter press part 20, the sediment is pushed toward the sewage outlet 11, thereby realizing the function of separating the treated wastewater from the sediment, and at the same time, the drainage opening 10 is opened. The opened drainage opening 10 is used to discharge the filtered wastewater.

[0044] See Figure 1 、 Figure 5 and Figure 8The filter press part 20 includes a filter plate 1 200 and a filter plate 2 201 distributed above and below near the upper side of the sedimentation barrel 1. The lower end of the filter plate 201 is integrally formed with an extrusion protrusion. Both the filter plate 1 200 and the filter plate 2 201 are provided with filter through holes 202. Filter cloths 203 are provided in the multiple filter through holes 202 on the filter plate 201. The filter through holes 202 on the upper and lower sides are staggered. The lower end of the filter plate 1 200 is equipped with multiple blocking columns 204 corresponding to the positions of the filter through holes 202 on the filter plate 201. The length of the blocking columns 204 increases from the outside to the inside. A sealing lifting plate 205 slidably connected to the drainage opening 10 is installed on the vertical side wall of the filter plate 1 200. The lower end of the sealing lifting plate 205 slides through the sedimentation barrel 1. The filter press section 20 also includes a plurality of support members 206 installed on the upper end of the filter plate 201, and a baffle located at the upper end of the filter plate 1 200 is installed on the support member 206. The upper ends of the plurality of support members 206 slide through the filter plate 1 200 and are jointly installed with a linkage top plate 207. A plurality of return springs 208 are installed between the lower end of the linkage top plate 207 and the filter plate 1 200.

[0045] See Figure 1 、 Figure 2 and Figure 5 The driving part 4 includes a positioning frame 40 fixedly installed in the working position, and a fixed section of a hydraulic push rod 41 is installed on the positioning frame 40, and the moving section of the hydraulic push rod 41 is fixedly connected to the filter plate 200.

[0046] During specific operation, after the sedimentation barrel 1 is installed in the working position, the positioning frame 40 is fixed in the working position. Before operation, the hydraulic push rod 41 is connected to the existing hydraulic pump. The filter plate 1 200 and the filter plate 2 201 are located above the sedimentation barrel 1. When the wastewater no longer produces sediment and the sediment is still suspended in the sedimentation barrel 1, the hydraulic push rod 41 is started. The moving section of the hydraulic push rod 41 drives the filter plate 1 200 to move downward. The filter plate 1 200 drives the linkage top plate 207 to move downward through a plurality of return springs 208. The linkage top plate 207 drives the filter plate 2 201 to move downward through a plurality of support members 206. The support member 206 can be a rod-shaped structure or a tubular structure, which is not limited here. The downward-moving filter plate 201 filters and separates the treated wastewater and sediment through the filter cloth 203 in the plurality of filter through holes 202. The treated wastewater passes through The filter cloth 203 passes through the multiple filter holes 202 on the filter plate 201, and the sediment is pushed downward by the filter plate 201 and the filter cloth 203. At the same time, the downward moving filter plate 1 200 drives the sealing lifting plate 205 to move downward, thereby gradually opening the drainage opening 10. The wastewater separated from the sediment passes through the multiple filter holes 202 on the filter plate 1 200 and flows out from the drainage opening 10. The guide frame 14 guides the outflowing wastewater to prevent the outflowing wastewater from spreading everywhere. The drainage opening 10 is gradually opened, and the wastewater separated from the sediment can be discharged in real time. The efficiency of wastewater discharge is high. It should be noted that a sealing rubber is provided in the drainage opening 10. The sealing rubber serves to increase the sealing strength between the drainage opening 10 and the sealing lifting plate 205 to prevent wastewater from leaking from the gap between the drainage opening 10 and the sealing lifting plate 205. If a large number of filter holes in the filter cloth 203 on the filter plate 201 are blocked, it is only necessary to drive the moving section of the descending hydraulic push rod 41 to rise, that is, the filter plate 201 rises, and the wastewater in the filter through holes 202 on the filter plate 201 backwashes the filter cloth 203 to ensure that a large number of filter holes in the filter cloth 203 are unobstructed. When the filter press part 20 separates the precipitated wastewater, there is no need to let the precipitate in the wastewater stand, which effectively improves the efficiency of separating the wastewater and the precipitate, thereby improving the efficiency of wastewater treatment.

[0047] See Figure 1 、 Figure 2 and Figure 8 The filter press section 20 is connected to an adjustment section 21 disposed on the sedimentation barrel 1 and used to change the filtration mode of the filter press section 20. The adjustment section 21 includes two spring telescopic rods 210 mounted on both sides of the upper end of the sedimentation barrel 1 via ear seats. An adjustment member 211 is mounted on both upper ends of the two spring telescopic rods 210. The adjustment member 211 slides through the moving section of the hydraulic push rod 41. A plurality of traction ropes 212 are mounted on both sides of the lower end of the adjustment member 211. The lower ends of the traction ropes 212 pass through the corresponding filtration holes 202 on the filter plate 1 200 and are fixedly connected to the filter plate 2 201.

[0048] During specific operation, the descending filter plate 201 drives multiple traction ropes 212 to move at the same time, and multiple traction ropes 212 change from a relaxed state to a tightened state. When the traction ropes 212 are in a stretched state, the filter plate 201 is located near the bottom of the sedimentation barrel 1 and the sediment is located at the lower end of the filter plate 201. It should be noted that the elastic force provided by the spring telescopic rods 210 on both sides is much greater than the elastic force provided by the multiple reset springs 208. The moving section of the hydraulic push rod 41 continues to drive the filter plate 1 200 to move downward, and the spring telescopic rods 210 on both sides limit the filter plate 201 through the adjusting member 211 and multiple traction ropes 212. The adjusting member 211 can be a plate-like structure or a rod-like structure, which is not the only limitation here. The stressed filter plate 1 200 stretches the multiple return springs 208 and moves relative to the multiple support members 206. The filter plate 1 200 gradually moves toward the filter plate 2 201 until the two are tightly attached. While the filter plate 1 200 moves toward the filter plate 2 201, it drives the multiple blocking columns 204 to plug and cooperate with the multiple corresponding filter holes 202 on the filter plate 2 201, thereby realizing the function of sealing the multiple filter holes 202 on the filter plate 2 201, and preventing a large amount of accumulated sediment from passing through the multiple filter holes 202 on the filter plate 2 201 during the subsequent extrusion and discharge process.

[0049] See Figure 1 、 Figure 2 and Figure 7 The reverse osmosis wastewater treatment equipment at this water treatment plant also includes a sealing unit 3, which is mounted on the bottom wall of the sedimentation barrel 1 and is used to control the opening and closing of the sewage outlet 11. Specifically, after the movable section of the hydraulic push rod 41 drives the filter press 20 down to near the bottom of the sedimentation barrel 1, the filter press 20 pushes the sealing unit 3 through the adjustment section 21, opening the sewage outlet 11 and squeezing the sediment out of the sewage outlet 11.

[0050] See Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The sealing unit 3 includes a sewage pipe 30 installed on the bottom wall of the sedimentation barrel 1 and coaxially distributed with the sewage outlet 11. A sealing cover 31 is hinged at the lower end of the sewage pipe 30. A downward pressure portion 32 connected to the adjustment portion 21 is provided on the outer periphery of the sewage pipe 30. A cover plate limiting portion 33 connected to the bottom wall of the sedimentation barrel 1 is provided on the side of the sewage pipe 30 away from the hinged connection between the sewage pipe 30 and the sealing cover 31.

[0051] See Figure 1 、 Figure 2 、 Figure 5 and Figure 6The pressing portion 32 includes a pressing member 320 disposed on the outer periphery of the drain pipe 30. Two transmission members 321 are symmetrically mounted on the pressing member 320, each of which slides through a corresponding ear seat and is connected to the adjusting member 211. A pushing plate 322 is hingedly connected to the lower end of the pressing member 320 near the cover plate limiter 33 via a hinged frame. A baffle plate 323 is fixedly connected to the pressing member 320 on the side of the pushing plate 322 near the drain pipe 30. The baffle plate 323 is used to limit the pushing plate 322 to an inclined state. The pressing portion 32 also includes two connecting seats 324 symmetrically mounted at the lower end of the pressing member 320. A supporting member 325 located at the lower end of the sealing cover 31 is mounted between the two connecting seats 324.

[0052] See Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The cover plate limiting portion 33 includes a limiting frame 330 mounted on the bottom wall of the sedimentation barrel 1 through a mounting frame and opening toward the sealing cover 31. A sliding channel 331 is provided on the upper frame wall of the limiting frame 330. A limiting block 332 located at the lower end of the sealing cover 31 is slidably connected in the limiting frame 330. A telescopic spring 333 is installed between the limiting frame 330 and the limiting block 332. A force-bearing block 334 located in the sliding channel 331 is installed on the upper end of the limiting block 332. The end of the limiting block 332 located at the lower end of the sealing cover 31 is provided with an inclined surface.

[0053] During specific operation, after the filter plate 1 200 and the filter plate 2 201 are fitted together, the moving section of the hydraulic push rod 41 continues to push the filter plate 1 200. The filter plate 1 200 and the filter plate 2 201 are simultaneously subjected to force and the adjusting member 211 is pulled downward by multiple traction ropes 212. The adjusting member 211 moves downward and presses down the spring telescopic rods 210 on both sides. At the same time, the adjusting member 211 drives the two transmission members 321 to move downward. The transmission member 321 can be a rod-shaped structure or a tubular structure, which is not limited here. The two transmission members 321 drive the pressing member 320 to move downward. The pressing member 320 can be a ring structure or a square structure, which is not limited here. The pressing member 320 drives the supporting member 325 to move downward through the two connecting seats 324, thereby separating from the sealing cover 31, and at the same time, the pressing member 320 drives the pushing plate 322 to move downward. When the hopper 330 is in the closed position, the push plate 322 moves downward, slides on the upper end of the limit frame 330 and pushes the force-bearing block 334. The force-bearing block 334 is driven by the force to drive the limit block 332 to move away from the sealing cover 31 and squeeze the telescopic spring 333, thereby releasing the barrier of the sealing cover 31. The sealing cover 31 rotates along the hinge part by its own gravity, thereby opening the lower end of the sewage pipe 30. It should be noted that the unstationary sediment is in a suspended state and has a certain fluidity, which can be moved by force. Subsequently, the filter plate 201 continues to descend and discharges the sediment in the sedimentation barrel 1 from the sewage outlet 11 and the sewage pipe 30, realizing the function of cleaning the sediment inside the sedimentation barrel 1. The extrusion protrusion integrally formed at the lower end of the filter plate 201 cooperates with the bottom wall of the sedimentation barrel 1 to ensure the effect of sediment discharge, reduce the frequency of sediment cleaning by the staff, and reduce manpower consumption. The hydraulic push rod 41 can filter, discharge and precipitate the treated wastewater in one working process, thereby realizing the multi-functional function of one machine, effectively reducing the use of drive, reducing energy consumption and improving the practicality of the wastewater treatment equipment.

[0054] After the sediment is discharged, the hydraulic push rod 41 drives the filter plate 1 200 and the filter plate 2 201 to reset upward, and the compressed spring telescopic rod 210 drives the adjusting member 211 to rise. The adjusting member 211 drives the pressing member 320 to rise through the two transmission members 321. The pressing member 320 drives the supporting member 325 to move upward through the two connecting seats 324 and push the sealing cover 31. It should be noted that the elastic force provided by the two spring telescopic rods 210 is much greater than that of the telescopic spring 33. 3, the sealing cover 31 is subjected to the force and pushes the inclined surface of the lower end of the limit block 332, and the limit block 332 is forced to move to avoid affecting the reset of the sealing cover 31. A sealing gasket is provided on the sealing cover 31 to enhance the airtightness with the lower end of the sewage pipe 30. After the sealing cover 31 is tightly attached to the lower end of the sewage pipe 30, the compressed telescopic spring 333 is reset and drives the limit block 332 to move to the lower end of the sealing cover 31, and the limit block 332 limits the sealing cover 31 again.

[0055] After the filter plate 1 200 and the filter plate 2 201 are reset, the previous wastewater treatment steps are repeated (eg Figure 9 The work is completed when the wastewater treatment is completed.

[0056] In addition, the present invention also provides a method for treating reverse osmosis wastewater in a water treatment plant, which specifically includes the following steps: S1: injecting wastewater into a sedimentation barrel 1 installed in a working position. When the wastewater is injected into the sedimentation barrel 1 to a certain height, a flocculant and a chemical precipitant are poured into the sedimentation barrel 1, and the heavy metal ions in the wastewater are precipitated.

[0057] S2: After no more precipitation is generated in the wastewater, the filter press part 20 moves downward from the upper end of the sedimentation barrel 1. The moving filter press part 20 pushes the precipitation in the wastewater downward. At the same time, the filter press part 20 opens the drainage opening 10. The treated wastewater passes through the filter press part 20 and flows out through the drainage opening 10 in real time.

[0058] S3: As the filter press section 20 continues to move downward, the wastewater in the sedimentation barrel 1 gradually decreases, and the generated sediment accumulates downward. When the filter press section 20 moves to a certain depth in the sedimentation barrel 1, the adjusting section 21 seals the filter press section 20. The filter press section 20 continues to move downward and pushes the sealing unit 3 through the adjusting section 21. The sealing unit 3 opens the sewage outlet 11, and the filter press section 20 discharges the sediment through the sewage outlet 11.

[0059] S4: The filter pressing part 20 contacts the bottom wall of the sedimentation barrel 1 and then moves upward, and the regulating part 21 is reset and drives the sealing unit 3 to reseal the sewage outlet 11.

[0060] S5: Repeat steps S1-S4 until all wastewater is treated and the work is completed.

[0061] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0062] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reverse osmosis wastewater treatment equipment for a water treatment plant, comprising a sedimentation tank for wastewater sedimentation, characterized in that: The annular wall of the sedimentation barrel is provided with a drainage opening, and the bottom wall of the sedimentation barrel is provided with a sewage outlet for discharging sediment; A filter press unit is disposed in the sedimentation barrel and is used to separate wastewater from sediment. The filter press unit includes a filter press portion that can move up and down in the sedimentation barrel. During the descent of the filter press portion, the sediment is pushed toward the sewage outlet and a drainage opening is opened. The opened drainage opening is used to discharge the filtered wastewater. The filter press portion is connected to an adjustment portion disposed on the sedimentation barrel and used to change the filtering mode of the filter press portion. The filter press section includes a filter plate 1 and a filter plate 2 distributed above and below near the upper side of the sedimentation barrel, each of the filter plates 1 and 2 being provided with a filter through hole, and filter cloths being provided in the multiple filter through holes on the filter plate 2. A sealing lifting plate slidably connected to the drainage opening is installed on the vertical side wall of the filter plate 1, and the lower end of the sealing lifting plate slides through the sedimentation barrel; A sealing unit is provided on the bottom wall of the sedimentation tank and is used to control the opening and closing of the sewage outlet; After the filter press descends to the bottom of the sedimentation barrel, the regulating part pushes the sealing unit to open the sewage outlet, and the filter press squeezes the sediment out of the sewage outlet. The sealing unit includes a sewage pipe installed on the bottom wall of the sedimentation barrel and coaxially distributed with the sewage outlet, a sealing cover is hingedly connected to the lower end of the sewage pipe, a downward pressure portion connected to the adjustment portion is provided on the outer periphery of the sewage pipe, and a cover plate limiting portion connected to the bottom wall of the sedimentation barrel is provided on the side of the sewage pipe away from the hinged connection between the sewage pipe and the sealing cover; The pressing portion includes a pressing member arranged on the outer periphery of the sewage pipe, and two transmission members are symmetrically mounted on the pressing member, which slide through corresponding ear seats and are connected to the adjusting member. A pushing plate is hingedly connected to the side of the lower end of the pressing member near the limit portion of the cover plate through a hinge frame. A baffle plate fixedly connected to the pressing member is provided on the side of the pushing plate near the sewage pipe, and the baffle plate is used to limit the pushing plate to an inclined state. The pressing portion further comprises two connecting seats symmetrically mounted on the lower end of the pressing member, and a supporting member located at the lower end of the sealing cover is mounted between the two connecting seats; The cover plate limiting part includes a limiting frame installed on the bottom wall of the sedimentation barrel through a mounting frame and with an opening toward the sealing cover. A sliding channel is provided on the upper frame wall of the limiting frame. A limiting block located at the lower end of the sealing cover is slidably connected in the limiting frame. A telescopic spring is installed between the limiting frame and the limiting block. A force-bearing block located in the sliding channel is installed on the upper end of the limiting block. The end of the limiting block located at the lower end of the sealing cover is provided with an inclined surface.

2. The reverse osmosis wastewater treatment equipment for a water treatment plant according to claim 1, characterized in that: The lower end of the second filter plate is integrally formed with an extrusion protrusion, and the filter holes on the upper and lower sides are staggered. A plurality of blocking columns corresponding to the positions of the filter holes on the second filter plate are installed at the lower end of the filter plate.

3. The reverse osmosis wastewater treatment equipment for a water treatment plant according to claim 2, characterized in that: The filter press also includes multiple support members installed on the upper end of filter plate 2. The upper ends of the multiple support members slide through filter plate 1 and are jointly installed with a linkage top plate. Multiple reset springs are installed between the lower end of the linkage top plate and filter plate 1.

4. The reverse osmosis wastewater treatment equipment for a water treatment plant according to claim 3, characterized in that: The adjustment part includes two spring telescopic rods installed on both sides of the upper end of the sedimentation barrel through ear seats. The upper ends of the two spring telescopic rods are jointly installed with an adjustment piece. Multiple traction ropes are installed on both sides of the lower end of the adjustment piece. The lower ends of the traction ropes pass through the corresponding filter holes on the filter plate 1 and are fixedly connected to the filter plate 2.

5. The reverse osmosis wastewater treatment equipment for a water treatment plant according to claim 1, characterized in that: The movement of the filter press part is achieved by a driving part.

6. A method for treating reverse osmosis wastewater in a water treatment plant, characterized in that: The reverse osmosis wastewater treatment equipment for a water treatment plant according to claim 1 is used to complete the process, including the following steps: S1: Pour wastewater into the sedimentation tank installed at the working position. When the wastewater is poured into the sedimentation tank to a certain height, flocculant and chemical precipitant are poured into the sedimentation tank to precipitate the heavy metal ions in the wastewater. S2: After no more sediment is produced in the wastewater, the filter press moves downward from the upper end of the sedimentation barrel. The moving filter press pushes the sediment in the wastewater downward and at the same time opens the drainage opening. The treated wastewater passes through the filter press and flows out through the drainage opening in real time. S3: As the filter press continues to move downward, the wastewater in the sedimentation barrel gradually decreases, and the generated sediment accumulates downward. When the filter press moves to a certain depth in the sedimentation barrel, the regulating part seals the filter press, and the filter press continues to move downward and pushes the sealing unit through the regulating part. The sealing unit opens the sewage outlet, and the filter press discharges the sediment through the sewage outlet. S4: After the filter press contacts the bottom wall of the sedimentation barrel, it moves upward, the adjustment part resets and drives the sealing unit to reseal the sewage outlet; S5: Repeat steps S1-S4 until all wastewater is treated and the work is completed.

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