Hydrolysis wastewater treatment device and method for secondary alcohol polyoxyethylene ether production

Abstract

The invention discloses a hydrolysis wastewater treatment device and method for secondary alcohol polyoxyethylene ether production, and relates to the technical field of wastewater treatment.The hydrolysis wastewater treatment device comprises a water inlet tank, a down-flow pipe is arranged in the water inlet tank in a penetrating mode, a testing mechanism is arranged at the upper end of the down-flow pipe, and a main grid is fixed in the water inlet tank; a partition plate matched with the testing mechanism is arranged in the water inlet tank, a gap is formed between the partition plate and the bottom face of the water inlet tank, the testing mechanism comprises a movable sleeve, a first grating is fixed to the upper end of the movable sleeve, and a second grating and a third grating are arranged on the lower side of the first grating at intervals; the second grating and the third grating are in sliding fit with the movable sleeve, a frame is arranged on the first grating in a surrounding mode, side plates are fixed to the four edges of the second grating and the four edges of the third grating, a plurality of first springs are connected between the frame and the side plates, and force measuring modules are arranged at the connecting ends of the first springs. According to the invention, the blocking state of the grid can be monitored online in real time while the wastewater is filtered.

Description

A device and method for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers. Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device and method for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers. Background Technology

[0002] The hydrolysis wastewater generated during the production of secondary alcohol polyoxyethylene ethers (usually referring to secondary alcohol ethoxylates, such as the AEO series) is characterized by high COD, high turbidity, poor biodegradability, and the presence of surfactants and organic solvents, making it difficult to treat.

[0003] For the treatment of secondary alcohol polyoxyethylene ether hydrolysis wastewater, the industry generally follows a three-stage process framework of "pretreatment-biological treatment-deep treatment." The core logic is to gradually address the pollution challenges of the wastewater through staged treatment. The pretreatment stage typically employs bar screens and equalization tanks to homogenize water quality and quantity, combined with coagulation-flotation or chemical demulsification processes to remove over 80% of suspended solids and 60%-80% of surfactants, reducing the load on subsequent treatments and foam interference. Biological treatment, as the core component, usually adopts a combination of "hydrolysis, acidification, and aerobic biological treatment" to deeply degrade organic pollutants. The final deep treatment utilizes advanced oxidation and activated carbon adsorption technologies to remove residual recalcitrant substances and trace surfactants, ensuring that the effluent meets standards.

[0004] However, the surfactants in the secondary alcohol polyoxyethylene ether hydrolysis wastewater form a stable emulsion system, entraining tiny solid debris generated during raw material production, unreacted secondary alcohol polyoxyethylene ether polymer particles, and colloidal flocs formed by reaction byproducts. These pollutants are characterized by fine particle size, strong viscosity, and difficulty in settling. Existing pretreatment bar screen designs are mostly adapted to the interception of large suspended solids in conventional industrial wastewater, without being specifically optimized for these emulsion pollutants. As a result, when wastewater flows through the screen, the fine, viscous pollutants entrained in the emulsion system are easily adsorbed onto the surface of the screen bars. Furthermore, due to the lubrication and dispersing effect of surfactants, the pollutants are difficult to detach naturally, and a dense blockage layer quickly forms between the screen gaps. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device and method for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ether, comprising an inlet tank, a main treatment tower, and a purification tank. The inlet tank is mounted on the upper side of the main treatment tower. A downflow pipe is installed inside the inlet tank, with its lower end extending into the interior of the main treatment tower. A testing mechanism is installed at the upper end of the downflow pipe. A main grid is fixed inside the inlet tank. A partition is installed inside the inlet tank in conjunction with the testing mechanism, with a gap between the partition and the bottom surface of the inlet tank.

[0007] According to the above technical solution, the testing mechanism includes a movable sleeve, a first grid is fixed at the upper end of the movable sleeve, a second grid and a third grid are spaced apart on the lower side of the first grid, the second grid and the third grid slide in cooperation with the movable sleeve, a frame is surrounded by the first grid, side plates are fixed on the four sides of the second grid and the third grid, a number of first springs are connected between the frame and the side plates, a force measuring module is provided at the connection end of the first spring, through holes are opened at the four corners of the frame and the side plates, threaded sleeves are provided in the through holes of the frame, screws are connected to the threaded sleeves, and a drive component is connected to the upper end of the screws.

[0008] According to the above technical solution, a cover plate is fixed on the upper side of the main screen, the transition zone is between the main screen and the partition, the other side of the main screen is the water inlet zone, the other side of the partition is the test zone, and the cover plate has an inlet corresponding to the water inlet zone.

[0009] According to the above technical solution, the drive assembly is provided in two sets. The drive assembly includes a driver, which is installed on one side of the water inlet tank. The driver has two drive wheels on its drive end and a driven wheel on its upper end. A belt connects the drive wheel and the driven wheel.

[0010] According to the above technical solution, the lower end of the movable sleeve is chamfered, and a collection box is fixed to the outside of the chamfer. The lower side of the collection box is provided with an opening to match the chamfer. Several filter holes are opened on the upper circumference of the collection box. A guide plate and a hook plate are provided inside the collection box. One side of the guide plate is fixed to the surface of the movable sleeve, and the other side of the guide plate is spaced from the wall of the collection box. One side of the hook plate is fixed to the wall of the collection box, and the other side of the hook plate is bent towards the filter holes and spaced from the surface of the movable sleeve.

[0011] According to the above technical solution, a first window is opened on the surface of the collection box, and a telescopic box is movably installed on the outside of the collection box. The telescopic box includes a side plate and a bottom plate. The side plate slides with the surface of the collection box. A baffle is connected to the bottom opening of the collection box and slides with the bottom plate. Several second springs are connected between the bottom plate and the collection box.

[0012] According to the above technical solution, a second window is provided on the lower side of the side panel corresponding to the first window, and a set of sliding grooves is provided on the upper side of the second window.

[0013] According to the above technical solution, a slide plate is provided in conjunction with the slide groove, and a slider is provided in conjunction with the slide groove on the slide plate. A third window is opened on the surface of the slide plate, which corresponds to the second window. A counterweight is connected to the lower end of the slide plate. The counterweight is set as a ring structure and is connected to the two slide plates respectively.

[0014] According to the above technical solution, a cleaning tank is fixed to the bottom of the inlet tank relative to the drain pipe. The cleaning tank has an opening on the upper side. A matching annular groove is provided at the bottom of the inlet tank corresponding to the opening of the cleaning tank. An annular pad is provided inside the cleaning tank in conjunction with the telescopic box. A circular hole one and a circular hole two are provided on both sides of the cleaning tank corresponding to the third window. A rinsing device is connected to the external of the circular hole one through a hose, and a recycling device is connected to the external of the circular hole two through a hose.

[0015] According to the above technical solution, the main treatment tower is the core deep pretreatment unit of the device. The top of the main treatment tower is connected to the inlet tank, and the bottom of the main treatment tower is connected to the purification tank. The main treatment tower is filled with a coarse packing layer, a demulsification adsorption layer and a fine filtration layer from bottom to top.

[0016] According to the above technical solution, the purification tank is connected to the main treatment tower and serves as the terminal fine treatment and stable flow output unit, realizing the final stabilization and compliance transition of the pretreated water. The purification tank is equipped with high-precision filter components / activated carbon / porous adsorption materials, and ultrafiltration, precision filtration, and deep adsorption units can be selected according to the water quality.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting up a testing mechanism, in conjunction with the first grid, the second grid, the third grid and the force measuring module, can monitor the grid blockage status in real time and online while filtering wastewater. It can accurately identify the problem of decreased permeability caused by viscous particles, colloidal flocs and emulsified pollutants, realize early detection and early warning of blockage, avoid system flow interruption, overflow and other failures caused by sudden grid blockage, and greatly improve the operational stability of the device.

[0018] By incorporating a chamfered lower end and a collection box on the movable sleeve, the device automatically scrapes against the outer wall of the downstream pipe during the downward movement of the testing mechanism. This promptly peels off and collects the dirt, colloids, and oil film adhering to the pipe wall. Combined with baffles and hooks, it forms a collection structure that prevents backflow and provides strong interception, enabling simultaneous operation, cleaning, and collection. This effectively avoids scaling and narrowing of the downstream pipe, as well as flow attenuation, ensuring long-term unobstructed pipeline flow. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 is a schematic diagram of the overall structure of the wastewater treatment device of the present invention; Figure 2 is a cross-sectional view of the wastewater treatment device of the present invention; Figure 3 is an enlarged schematic diagram of area A in Figure 2 of the present invention; Figure 4 is an enlarged schematic diagram of area B in Figure 3 of the present invention; Figure 5 is a partial schematic diagram of the downflow pipe of the present invention; Figure 6 is an enlarged schematic diagram of area C in Figure 5 of the present invention; Figure 7 is a cross-sectional view of the downflow pipe of the present invention; Figure 8 is an enlarged schematic diagram of area D in Figure 7 of the present invention; Figure 9 is a schematic diagram of the structure of the drive assembly of the present invention; Figure 10 is a partial exploded view of the collection box and telescopic box of the present invention; Figure 11 is a partial schematic diagram of the collection box and telescopic box of the present invention; Figure 12 is an enlarged schematic diagram of area E in Figure 11 of the present invention.

[0020] In the diagram: 1. Inlet tank; 11. Main screen; 12. Baffle plate; 13. Transition zone; 14. Inlet zone; 15. Test zone; 2. Main treatment tower; 3. Purification tank; 4. Downflow pipe; 5. Test mechanism; 51. Movable sleeve; 511. Chamfer; 52. First screen; 521. Frame; 522. Threaded sleeve; 523. Screw; 53. Second screen; 54. Third screen; 55. Side plate; 56. First spring; 57. Drive assembly; 571. Driver; 572. Drive wheel 573. Driven wheel; 574. Belt; 6. Cover plate; 61. Inlet; 7. Collection box; 71. Opening; 72. Filter hole; 73. Guide plate; 74. Hook plate; 75. First window; 81. Side plate; 811. Second window; 812. Slide; 82. Bottom plate; 83. Baffle; 84. Second spring; 85. Slide plate; 851. Slider; 852. Third window; 853. Counterweight; 9. Cleaning box; 91. Annular pad; 92. Round hole one; 93. Round hole two. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please refer to Figures 1-12. The present invention provides a technical solution: a device and method for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ether, comprising an inlet tank 1, a main treatment tower 2, and a purification tank 3. The inlet tank 1 is mounted on the upper side of the main treatment tower 2. A downflow pipe 4 is installed inside the inlet tank 1, with the lower end of the downflow pipe 4 extending into the interior of the main treatment tower 2. A testing mechanism 5 is installed at the upper end of the downflow pipe 4. A main grid 11 is fixed inside the inlet tank 1. A partition 12 is installed inside the inlet tank 1 in conjunction with the testing mechanism 5, with a gap between the partition 12 and the bottom surface of the inlet tank 1.

[0023] As shown in Figures 4-6, the testing mechanism 5 includes a movable sleeve 51. A first grid 52 is fixed to the upper end of the movable sleeve 51. A second grid 53 and a third grid 54 are spaced apart on the lower side of the first grid 52. The second grid 53 and the third grid 54 slide with the movable sleeve 51. A frame 521 surrounds the first grid 52. Side plates 55 are fixed to the four sides of the second grid 53 and the third grid 54. Several first springs 56 are connected between the frame 521 and the side plates 55. A force measuring module is provided at the connection end of the first springs 56. Through holes are opened at the four corners of the frame 521 and the side plates 55. A threaded sleeve 522 is provided in the through hole of the frame 521. A screw 523 is connected to the threaded sleeve 522. A drive assembly 57 is connected to the upper end of the screw 523.

[0024] The following is a supplementary explanation based on the above structure: As shown in Figure 3, a cover plate 6 is fixed on the upper side of the main screen 11. The transition zone 13 is between the main screen 11 and the partition 12. The other side of the main screen 11 is the inlet zone 14, and the other side of the partition 12 is the test zone 15. The cover plate 6 has an inlet 61 corresponding to the inlet zone 14. Under normal conditions, the overall height of the test mechanism 5 is higher than the bottom of the partition 12. After certain treatment, the wastewater enters the inlet zone 14 through the inlet 61, passes through the main screen 11, enters the transition zone 13, and then enters the test zone 15 through the lower end of the partition 12. The wastewater surges upward through the test mechanism 5 in the test zone 15, impacts the third screen 54, and then passes through the second screen 53 and the first screen 52 in sequence. After reaching the upper opening of the downflow pipe 4, it is transferred downward through the downflow pipe 4 to the main treatment tower 2. The force measurement module uses a pressure / tension sensor (adapted to a range of 0-50N, with an accuracy of 0.01N) to test the flow status of the wastewater as it passes through the test mechanism 5 while filtering the wastewater. The viscous particles, colloidal flocs, and pollutants carried by the emulsion system in the wastewater will gradually be adsorbed onto the bar screen, leading to a decrease in the screen's permeability. As the blockage worsens, the resistance of the wastewater passing through the screen increases, and the impact force (or pressure on the spring) on ​​the third screen 54 and the second screen 53 will show a regular change. The force measuring module detects this force change and inversely deduces the screen blockage status.

[0025] Optionally, as shown in Figure 9, the drive assembly 57 is provided with two sets. The drive assembly 57 includes a driver 571, which is installed on one side of the water inlet tank 1. Two drive wheels 572 are sleeved on the drive end of the driver 571. A driven wheel 573 is sleeved on the upper end of the screw 523. A belt 574 connects the drive wheel 572 and the driven wheel 573.

[0026] In actual operation, when the third screen 54 is severely clogged, to avoid affecting the wastewater treatment speed, the driver 571 drives the two drive wheels 572 to rotate, which in turn drives the driven wheel 573 at the upper end of the screw 523 to rotate synchronously via the belt 574. Because the screw 523 and the threaded sleeve 522 on the frame 521 are threadedly engaged, the rotational motion of the screw 523 is converted into linear motion along the axial direction of the threaded sleeve 522, thereby pushing or pulling the side plate 55 and the second and third screens 53 and 54 fixed thereto to move up and down. When the third screen 54 moves to the lower end of the partition 12, the wastewater will flow through the channel between the second and third screens 53 and 54, thus alleviating the blockage.

[0027] In one embodiment, as shown in FIG8, the lower end of the movable sleeve 51 is provided with a chamfer 511, and a collection box 7 is fixed on the outside of the chamfer 511. The lower side of the collection box 7 is provided with an opening 71 in conjunction with the chamfer 511. Several filter holes 72 are provided on the upper circumference of the collection box 7. A guide plate 73 and a hook plate 74 are provided inside the collection box 7. One side of the guide plate 73 is fixed to the surface of the movable sleeve 51, and the other side of the guide plate 73 is spaced from the wall of the collection box 7. One side of the hook plate 74 is fixed to the wall of the collection box 7, and the other side of the hook plate 74 is bent toward the filter holes 72 and spaced from the surface of the movable sleeve 51.

[0028] In actual operation, when the movable sleeve 51 moves downward, its lower end scrapes against the surface of the downflow pipe 4. The dirt adhering to the surface of the downflow pipe 4 detaches and flows with the water through the opening 71 into the collection tank 7. The water flows through the channel formed by the guide plate 73 and the hook plate 74, and finally through the filter holes 72. The dirt in the water is intercepted by the filter holes 72, and the water flows out through the filter holes 72. The hook plate 74 is used to prevent dirt backflow. Preferably, the filter holes 72 have a diameter of 0.5-1mm and are arranged in a honeycomb pattern, which ensures both efficient water flow and effective interception of dirt particles.

[0029] As shown in Figure 10, a first window 75 is provided on the surface of the collection box 7. A telescopic box is movably provided on the outside of the collection box 7. The telescopic box includes a side plate 81 and a bottom plate 82. The side plate 81 is slidably engaged with the surface of the collection box 7. A baffle 83 is connected to the bottom opening 71 of the collection box 7 and the bottom plate 82. The baffle 83 is slidably engaged with the bottom plate 82. Several second springs 84 are connected between the bottom plate 82 and the collection box 7.

[0030] A second window 811 is provided on the lower side of the side panel 81 corresponding to the first window 75, and a set of sliding grooves 812 is provided on the upper side of the second window 811.

[0031] As shown in Figures 11 and 12, a slide plate 85 is provided in conjunction with the slide groove 812, and a slider 851 is provided in conjunction with the slide groove 812. A third window 852 is provided on the surface of the slide plate 85, which corresponds to the second window 811. A counterweight 853 is connected to the lower end of the slide plate 85. The counterweight 853 is set as a ring structure and is connected to the two slide plates 85 respectively.

[0032] It should be further explained that: the baffle 83 is used to guide and scrape impurities into the collection tank 7 from the opening 71 when the movable sleeve 51 moves. Without external force, the slider 851 is positioned at the bottom of the slide 812 under the weight of the sliding plate 85. At this time, the third window 852 is offset from the second window 811, and the second window 811 is blocked by the sliding plate 85 and is in a closed state. The telescopic box maintains a similar height to the lower end of the baffle 83 under the action of the sliding plate 85. The second spring 84 is used to provide cushioning for the water flow impact and to prevent the telescopic box from detaching from the collection tank 7. Preferably, the second spring 84 must ensure that the lowest height of the bottom plate 82 is higher than the lower end of the baffle 83 to prevent external wastewater from entering the telescopic box. At this time, the second window 811 is offset from the first window 75, the first window 75 is blocked by the side plate 81 and is in a closed state, and the filter hole 72 is in an open state.

[0033] Furthermore, as shown in Figure 7, a cleaning tank 9 is fixed to the bottom of the inlet tank 1 relative to the drain pipe 4. The cleaning tank 9 has an opening on its upper side, and a matching annular groove is provided at the bottom of the inlet tank 1 corresponding to the opening of the cleaning tank 9. An annular pad 91 is provided inside the cleaning tank 9 in conjunction with the telescopic box. A first round hole 92 and a second round hole 93 are provided on both sides of the cleaning tank 9 corresponding to the third window 852. A rinsing device is connected to the first round hole 92 through a hose, and a recycling device is connected to the second round hole 93 through a hose.

[0034] In actual operation, when the movable sleeve 51 moves down into the cleaning tank 9, the annular pad 91 first contacts the counterweight 853 and abuts against the sliding plate 85. At this time, the slider 851 moves up along the slide groove 812, and the third window 852 coincides with the second window 811. Subsequently, the bottom plate 82 contacts the annular pad 91, compresses the second spring 84 and moves up, and the side plate 81 moves up to cover the filter hole 72. At the same time, the first window 75 corresponds to the second window 811. At this time, the three windows correspond one-to-one, and the collection tank 7 is connected to the outside. The rinsing equipment inputs cleaning water into the collection tank 7 through the first round hole 92, and transfers the impurities in the collection tank 7 from the second round hole 93 to the recovery device. Preferably, the recovery device can be used to detect the impurity content and pollution load in the recovered water, thereby determining the state of impurity adhesion on the surface of the downpipe 4.

[0035] Optionally, the main treatment tower 2 is the core deep pretreatment unit of the device. The top of the main treatment tower 2 is connected to the inlet tank 1, and the bottom of the main treatment tower 2 is connected to the purification tank 3. The main treatment tower 2 is filled with a coarse packing layer, a demulsification and adsorption layer, and a fine filter layer from bottom to top. The coarse packing layer is used to further retain suspended flocs; the demulsification and adsorption layer is used to demulsify, deoil, and de-stick AEO surfactants; and the fine filter layer is used to reduce turbidity and reduce the subsequent load.

[0036] Purification tank 3 is connected to the main treatment tower 2, serving as the final fine treatment and stable output unit. It achieves the final stabilization and compliance transition of the pretreated effluent. Purification tank 3 is equipped with high-precision filter components / activated carbon / porous adsorption materials, and can be equipped with ultrafiltration, precision filtration, or deep adsorption units according to water quality. It is used for the final fine filtration of the effluent from the main treatment tower 2, removing trace suspended solids, fine packing particles, and residual colloids; further adsorbing residual surfactants, small molecule organic matter, and odor substances, improving the color and transparency of the effluent; stabilizing water pressure and flow rate, smoothing water quality fluctuations, and providing stable influent with low turbidity, low viscosity, and low load for downstream deep treatment of industrial wastewater; as a buffer and guarantee unit of the pretreatment system, it can ensure continuous and stable effluent even if short-term fluctuations occur at the front end.

[0037] The specific treatment method is as follows: Step 1: Water intake and preliminary filtration. The hydrolyzed wastewater that has undergone pretreatment enters the water intake area 14 of the water inlet tank 1 from the inlet 61 of the cover plate 6. It first undergoes preliminary filtration through the main screen 11 to remove larger suspended impurities and flocculent matter. The filtered wastewater enters the transition area 13 and then enters the test area 15 from below the partition plate 12.

[0038] Step 2: Multi-stage filtration and online clogging test. Wastewater flows upward from bottom to top in test area 15, passing through the third grid 54, second grid 53 and first grid 52 of test mechanism 5 in sequence for multi-stage fine filtration. The force measuring module at the connection end of the first spring 56 collects the impact force and resistance signals of the wastewater as it passes through each grid in real time, and judges the permeability and degree of clogging of the grid based on the change of force value.

[0039] Step 3: Automatic blockage adjustment and emergency flow. When the force measuring module detects severe blockage in the third screen 54, the drive assembly 57 is activated. The driver 571 drives the screw 523 to rotate through the drive wheel 572, belt 574 and driven wheel 573, causing the second screen 53 and the third screen 54 to move downward. When the third screen 54 moves down to below the lower end of the partition 12, the wastewater bypasses through the channel between the second screen 53 and the third screen 54, ensuring that the wastewater continuously enters the downflow pipe 4 and maintaining a stable treatment flow rate.

[0040] Step 4: Automatic scraping and impurity collection on the pipe wall. As the testing mechanism 5 moves downward, the chamfer 511 at the lower end of the movable sleeve 51 scrapes against the outer wall of the downstream pipe 4, peeling off the dirt attached to the pipe wall. The peeled impurities enter the collection box 7 through the opening 71 with the water flow. Under the guiding action of the baffle 83 and the hook plate 74, the water flows out from the filter hole 72, and the dirt is intercepted in the collection box 7. The hook plate 74 prevents the impurities from flowing back.

[0041] Step 5: Online closed cleaning and impurity recovery. The movable sleeve 51 moves the collection box 7 down into the cleaning box 9. The annular pad 91 first lifts the counterweight 853 and the sliding plate 85, aligning the third window 852 with the second window 811. Then the bottom plate 82 is lifted, and the side plate 81 moves up to cover the filter hole 72, making the first window 75, the second window 811 and the third window 852 interconnected. The rinsing equipment injects cleaning water into the collection box 7 through the first round hole 92, flushing the internal impurities into the recovery device through the second round hole 93, realizing online cleaning. The cleanliness of the downstream pipe 4 can be judged by the quality of the recovered water.

[0042] Step Six: Deep Pretreatment and Terminal Purification. After filtration and testing, the wastewater enters the main treatment tower 2 through the downflow pipe 4. It passes through the coarse packing layer, the demulsification and adsorption layer, and the fine filtration layer in sequence to complete the demulsification, deoiling, deviscosification, and turbidity reduction treatment. The treated wastewater enters the purification tank 3 and undergoes terminal fine filtration through high-precision filter components or adsorption materials. After stabilizing the water quality and flow rate, it is output to the subsequent wastewater treatment system.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wastewater treatment device for hydrolysis in the production of secondary alcohol polyoxyethylene ether, comprising an inlet tank (1), a main treatment tower (2), and a purification tank (3), characterized in that, The inlet tank (1) is mounted on the upper side of the main treatment tower (2). A downflow pipe (4) is installed inside the inlet tank (1). The lower end of the downflow pipe (4) extends into the main treatment tower (2). A test mechanism (5) is installed at the upper end of the downflow pipe (4). A main grid (11) is fixed inside the inlet tank (1). A partition (12) is installed inside the inlet tank (1) in conjunction with the test mechanism (5). The partition (12) is spaced from the bottom surface of the inlet tank (1). The test mechanism (5) includes a movable sleeve (51). A first grid (52) is fixed at the upper end of the movable sleeve (51). A second grid (53) and a third grid (54) are spaced apart on the lower side of the first grid (52). The second grille (53) and the third grille (54) are slidably engaged with the movable sleeve (51). The first grille (52) is surrounded by a frame (521). The second grille (53) and the third grille (54) are fixed with side plates (55) on all four sides. A plurality of first springs (56) are connected between the frame (521) and the side plates (55). A force measuring module is provided at the connection end of the first springs (56). Through holes are opened at the four corners of the frame (521) and the side plates (55). A threaded sleeve (522) is provided in the through hole of the frame (521). A screw (523) is connected to the threaded sleeve (522). A drive assembly (57) is connected to the upper end of the screw (523).

2. The device for treating water hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 1, characterized in that, The main grille (11) is fixed with a cover plate (6) on the upper side. The main grille (11) and the partition (12) are in a transition zone (13). The other side of the main grille (11) is a water inlet zone (14). The other side of the partition (12) is a test zone (15). The cover plate (6) has an inlet (61) corresponding to the water inlet zone (14).

3. The device for treating water electrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 2, characterized in that, The drive assembly (57) is provided in two sets. The drive assembly (57) includes a driver (571). The driver (571) is installed on one side of the water inlet tank (1). The drive end of the driver (571) is fitted with two drive wheels (572). The upper end of the screw (523) is fitted with a driven wheel (573). A belt (574) connects the drive wheel (572) and the driven wheel (573).

4. The device for treating water electrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 3, characterized in that, The lower end of the movable sleeve (51) is provided with a chamfer (511), and a collection box (7) is fixed on the outside of the chamfer (511). The lower side of the collection box (7) is provided with an opening (71) in conjunction with the chamfer (511). Several filter holes (72) are provided on the upper circumference of the collection box (7). A guide plate (73) and a hook plate (74) are provided inside the collection box (7). One side of the guide plate (73) is fixed to the surface of the movable sleeve (51), and the other side of the guide plate (73) is spaced from the wall of the collection box (7). One side of the hook plate (74) is fixed to the wall of the collection box (7), and the other side of the hook plate (74) is bent toward the filter hole (72) and spaced from the surface of the movable sleeve (51).

5. The device for treating hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 4, characterized in that, The collection box (7) has a first window (75) on its surface. A telescopic box is movably provided on the outside of the collection box (7). The telescopic box includes a side plate (81) and a bottom plate (82). The side plate (81) slides with the surface of the collection box (7). A baffle (83) is connected to the bottom plate (82) at the opening (71) at the bottom of the collection box (7). The baffle (83) slides with the bottom plate (82). Several second springs (84) are connected between the bottom plate (82) and the collection box (7).

6. The device for treating water electrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 5, characterized in that, The side panel (81) has a second window (811) on the lower side corresponding to the first window (75), and a set of sliding grooves (812) is provided on the upper side of the second window (811).

7. The device for treating water electrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 6, characterized in that, The slide groove (812) is fitted with a slide plate (85), and the slide plate (85) is fitted with a slider (851) in conjunction with the slide groove (812). A third window (852) is opened on the surface of the slide plate (85), which corresponds to the second window (811). A counterweight (853) is connected to the lower end of the slide plate (85). The counterweight (853) is set as a ring structure and is connected to the two slide plates (85) respectively.

8. The device for treating water electrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers according to claim 7, characterized in that, The downpipe (4) is fixed with a cleaning tank (9) at the bottom of the water inlet tank (1). The cleaning tank (9) has an opening on the upper side. The bottom of the water inlet tank (1) is provided with a matching annular groove corresponding to the opening of the cleaning tank (9). The cleaning tank (9) is provided with an annular pad (91) in cooperation with the telescopic box. The cleaning tank (9) has a first round hole (92) and a second round hole (93) on both sides corresponding to the third window (852). The first round hole (92) is connected to a rinsing device through a hose, and the second round hole (93) is connected to a recycling device through a hose.

9. A wastewater treatment device for the production of secondary alcohol polyoxyethylene ethers according to claim 8, characterized in that, The main treatment tower (2) is the core deep pretreatment unit of the device. The top of the main treatment tower (2) is connected to the inlet tank (1), and the bottom of the main treatment tower (2) is connected to the purification tank (3). The main treatment tower (2) is filled with a coarse packing layer, a demulsification adsorption layer and a fine filtration layer from bottom to top. The purification tank (3) is connected to the main treatment tower (2) and is the terminal fine treatment and stable flow output unit. The purification tank (3) is equipped with high-precision filter components / activated carbon / porous adsorption materials.

10. A method for treating water hydrolysis wastewater from the production of secondary alcohol polyoxyethylene ethers, applicable to the water hydrolysis wastewater treatment device for the production of secondary alcohol polyoxyethylene ethers as described in claim 9, characterized in that, The specific methods are as follows: Step 1: Water intake and preliminary filtration. The hydrolyzed wastewater, after pretreatment, enters the water intake area (14) of the water inlet tank (1) from the inlet (61) of the cover plate (6). It first passes through the main screen (11) for preliminary filtration to remove larger suspended impurities and flocculent matter. The filtered wastewater enters the transition area (13) and then enters the test area (15) from below the partition (12). Step 2: Multi-stage filtration and online clogging test. The wastewater flows from bottom to top in the test area (15) and passes through the third screen (54), second screen (53) and first screen (52) of the test mechanism (5) in sequence for multi-stage fine filtration. The force measurement module at the connection end of the first spring (56) collects the impact force and resistance signal of the wastewater when it passes through each screen in real time. The permeability and clogging degree of the screen are judged according to the force value change. Step 3: Automatic blockage adjustment and emergency flow. When the force measuring module detects severe blockage in the third screen (54), the drive component (57) is activated, causing the second screen (53) and the third screen (54) to move downwards. When the third screen (54) moves below the lower end of the partition (12), the wastewater bypasses through the channel between the second screen (53) and the third screen (54), ensuring that the wastewater continuously enters the downflow pipe (4) and maintaining a stable treatment flow rate. Step 4: Automatic pipe wall scraping and impurity collection. During the downward movement of the testing mechanism (5), the chamfer (511) at the lower end of the movable sleeve (51) scrapes against the outer wall of the downflow pipe (4), peeling off the dirt attached to the pipe wall; the peeled impurities enter the collection box (7) through the opening (71) with the water flow, and under the guiding action of the baffle (83) and the hook plate (74), the water flows out from the filter hole (72), and the dirt is intercepted in the collection box (7). The hook plate (74) prevents the impurities from flowing back; Step 5: Online closed cleaning and impurity recovery, the movable sleeve (51) drives the collection The box (7) is lowered into the cleaning box (9). The annular pad (91) first lifts the counterweight (853) and the slide plate (85), aligning the third window (852) with the second window (811). Then the bottom plate (82) is lifted, and the side plate (81) moves up to cover the filter hole (72). The first window (75), the second window (811), and the third window (852) are connected to each other. The rinsing equipment injects cleaning water into the collection box (7) through the first round hole (92) and flushes the internal impurities through the second round hole (93). The wastewater is fed into the recycling device to achieve online cleaning, and the cleanliness of the downstream pipe (4) can be judged by the quality of the recycled water. Step 6: Deep pretreatment and terminal purification. The filtered and tested wastewater enters the main treatment tower (2) through the downstream pipe (4) and passes through the coarse packing layer, the demulsification adsorption layer and the fine filter layer in sequence to complete the demulsification, deoiling, de-adhesion and turbidity reduction treatment. The treated wastewater enters the purification tank (3) and is subjected to terminal fine filtration through high-precision filter components or adsorption materials. After stabilizing the water quality and flow rate, it is output to the subsequent wastewater treatment system.

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