Polyester polyol raw material wastewater circulation treatment device and treatment method thereof

Abstract

The invention relates to the technical field of wastewater treatment devices, and discloses a polyester polyol raw material wastewater circulation treatment device and a treatment method thereof.The polyester polyol raw material wastewater circulation treatment device comprises a sewage part, a precipitation part arranged on the right side of the sewage part, multiple sets of dosing parts arranged on the front side of the precipitation part, and a purified water collection part, the purified water collection part is arranged on the rear side of the precipitation part, and the precipitation treatment part is arranged on the right side of the precipitation part. The sewage pump can extract sediments, the driving motor drives the filter cartridge to rotate, the spiral plate is matched to realize rapid separation of the sediments and wastewater, the filtered water collecting box recovers dripping wastewater, the sediment collecting box collects the sediments intensively, separation is thorough, operation is convenient and fast, the secondary treatment capacity of the sediments is greatly reduced, and the overall treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment, and in particular to a wastewater recycling treatment device and treatment method for polyester polyol raw materials. Background Technology

[0002] Polyester polyol raw materials are the core precursors for polyurethane synthesis. They are prepared by esterification and polycondensation using dicarboxylic acids such as adipic acid and polyols such as ethylene glycol, butanediol, and neopentyl glycol as the main raw materials. The ratio and purity of the raw materials directly determine the molecular weight, functionality, and stability of the product. They are suitable for various applications such as elastomers, foams, and coatings, and are the foundation for ensuring the performance of polyurethane products.

[0003] Polyester wastewater treatment is a key environmental protection step in the polyester production process. It involves the centralized collection and purification of organic wastewater generated during production, ensuring stable effluent compliance through scientific control of operating parameters, and simultaneously achieving water resource recycling. This effectively reduces production energy consumption and pollutant emissions, aligns with the requirements of green chemical development, provides important support for sustainable production, achieves efficient water resource recycling and compliant discharge, connects the entire production process, and balances environmental compliance with cost reduction and efficiency improvement.

[0004] During the sedimentation process, the sediment needs to be pumped out using a sewage pump. In the process of pumping out the sediment, some wastewater is also pumped out, which needs to be treated again later, resulting in low efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater recycling treatment device and method for polyester polyol raw materials to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: It includes a wastewater section, a sedimentation section located on the right side of the wastewater section, multiple dosing sections located in front of the sedimentation section, a purified water collection section located behind the sedimentation section, and a sedimentation treatment section located on the right side of the sedimentation section. The sedimentation treatment section includes a sewage pump and a support frame, a filter cylinder rotatably mounted on the support frame, a spiral plate installed inside the filter cylinder, and the filter cylinder is inclined. The sedimentation treatment section also includes a water spray assembly located on the side of the filter cylinder.

[0007] Furthermore, the wastewater section includes a wastewater tank, a wastewater pump is installed on the wastewater tank, and a drain pipe is installed at the output end of the wastewater pump.

[0008] In the above scheme, the wastewater tank serves as the basic carrier for temporary wastewater storage. A wastewater pump, fixed to the tank via a mounting frame, extracts the wastewater. A drain pipe connects to the pump's output, completing wastewater transport. The wastewater tank provides centralized storage space for polyester polyol raw material wastewater. The wastewater pump, acting as the power unit, extracts the wastewater from the tank. The drain pipe guides the extracted wastewater to the first sedimentation zone, ensuring transport for subsequent sedimentation treatment. The pumping power of the wastewater pump is adjustable to accommodate different wastewater volumes. The pipe connection structure ensures leak-free wastewater transport, achieving seamless integration from storage to treatment.

[0009] Furthermore, the sedimentation section includes a tank body, in which a first sedimentation zone and a second sedimentation zone are provided. An L-shaped plate is fixed in the first sedimentation zone. The sedimentation section also includes a guide pipe, which is fixed in the second sedimentation zone and connects the first sedimentation zone and the second sedimentation zone.

[0010] Through the above scheme, a two-stage sedimentation space is formed inside the tank by the first and second sedimentation zones. An L-shaped plate guides the wastewater in the first sedimentation zone, and a guide pipe connects the wastewater between the first and second sedimentation zones, thus constructing the structural basis for the staged sedimentation. The first sedimentation zone completes the initial sedimentation of the wastewater. The L-shaped plate prevents impurities settled in the first sedimentation zone from flowing with the water, allowing only the supernatant to pass through. The guide pipe introduces the supernatant from the first sedimentation zone into the second sedimentation zone, where the wastewater undergoes secondary sedimentation. This staged sedimentation design improves the sedimentation effect, allowing impurities in the wastewater to be fully separated.

[0011] Furthermore, the dosing unit includes a medicine tank, a dosing pump is installed at the bottom of the medicine tank, a dosing pipe is connected to the output end of the dosing pump, and a water adding assembly and a stirring assembly are installed at the top of the medicine tank.

[0012] The above scheme utilizes a chemical tank for chemical storage, a dosing pump mounted at the bottom of the tank for chemical extraction and delivery, a water supply component for replenishing the tank, and direct chemical addition from the top. The tank stores the wastewater treatment chemicals, ensuring a raw material supply for the dosing process. The dosing pump provides power for chemical delivery, extracting the chemicals from the tank. Dosing pipes then guide the extracted chemicals to the first sedimentation zone, the second sedimentation zone, and the water tank, enabling simultaneous dosing in multiple zones. The water supply component replenishes the tank with water to prepare the chemicals at the required concentration, ensuring a continuous and stable dosing process.

[0013] Furthermore, the stirring assembly includes a stirring motor and a stirring rod, with the stirring motor fixed to the top of the medicine tank and the stirring rod fixed to the output end of the stirring motor.

[0014] In the above scheme, the stirring motor is the power output component, and the stirring rod receives the power to rotate. Both are assembled on the top of the medicine tank, with the stirring rod extending into the interior of the tank, forming a mixing structure for the medicine and water. When the stirring motor is powered on, it outputs rotational power, driving the stirring rod at the bottom to rotate inside the medicine tank. When the water addition component adds water and medicine to the tank, the rotation of the stirring rod ensures thorough mixing of the medicine and water, quickly preparing a uniform solution. This prevents medicine from settling at the bottom of the tank and affecting its efficacy. The stirring speed can be adjusted according to the medicine preparation requirements, ensuring the mixing effect of different medicine ratios and providing qualified raw materials for subsequent wastewater treatment.

[0015] Furthermore, the water collection unit includes a water outlet pipe, which is connected to the second sedimentation zone. The output end of the water outlet pipe is connected to a water tank, and a water purification pump is installed at the bottom of the water tank. The output end of the water purification pump is connected to a water purification pool.

[0016] Through the above scheme, the effluent pipe connects the wastewater between the second sedimentation zone and the water tank. The water tank provides space for subsequent wastewater treatment, the water purification pump is the power component for pumping and transporting purified water, and the water purification tank is the final storage container for purified water, forming a complete process for wastewater collection after purification. The effluent pipe introduces the wastewater after secondary sedimentation in the second sedimentation zone into the water tank, where subsequent chemical treatment is completed to achieve deep purification of the wastewater. The water purification pump then pumps the treated purified water out of the water tank, and the water purification tank receives and stores the pumped purified water. The purified water can be reused in the production of polyester polyol raw materials, realizing the recycling of water resources.

[0017] Furthermore, the sedimentation treatment unit also includes a bearing seat, a support roller, a drive motor, and a support plate. The support plate is fixed at both ends of the filter cylinder, the support roller is in sliding contact with the support plate, the support roller is fixed on the bearing seat, the bearing seat is fixed on the bracket, the drive motor is fixed on the bracket, and the output end of the drive motor is connected to the support roller.

[0018] In the above scheme, the bearing housing provides fixed support for the support roller, and the sliding fit between the support roller and the support plate provides support and guidance for the rotation of the filter cylinder. The drive motor outputs rotational power to the power component, and the support plate provides a connecting structure for the fit between the filter cylinder and the support roller, together achieving stable rotation of the filter cylinder. The bracket has a higher left end and a lower right end. The bearing housing is fixed on the bracket to provide an installation base for the support roller. The support plate is fixed at both ends of the filter cylinder, and the sliding contact with the support roller makes the rotation of the filter cylinder more stable. After the drive motor is powered on, it outputs power to drive the support roller to rotate. The support roller, through its fit with the support plate, drives the filter cylinder to rotate synchronously. The water spray assembly is connected to a water pump. The water pump outputs clean water, which is sprayed out through the nozzle of the water spray assembly, washing away impurities inside the filter cylinder to the bottom of the filter cylinder. Finally, the impurities fall into the sediment collection tank under the guidance of the spiral plate.

[0019] Furthermore, the sedimentation treatment unit also includes a filtered water collection tank, a sediment collection tank, and a guide cylinder. The filtered water collection tank is located at the bottom of the filter cylinder, the sediment collection tank is located at the bottom of the guide cylinder, and the guide cylinder is fixed to the right end of the filter cylinder.

[0020] Through the above scheme, the filtered water collection tank receives the wastewater dripping from the filter cartridge, the guide cylinder provides a guiding channel for the discharge of sediment inside the filter cartridge, and the sediment collection tank receives the sediment discharged from the guide cylinder. These three components form a separation and collection structure for sediment and wastewater. During the rotation of the filter cartridge, the wastewater inside drips through the gaps into the filtered water collection tank at the bottom, achieving wastewater recovery. The spiral plate inside the filter cartridge moves the sediment towards the guide cylinder at the right end, which guides the sediment to the sediment collection tank at its bottom, completing the centralized collection of sediment. The wastewater collected in the filtered water collection tank can be returned to the treatment stage. The centralized collection of sediment in the sediment collection tank facilitates subsequent unified treatment, achieving efficient separation and classified collection of sediment and wastewater, and improving the overall efficiency of wastewater treatment.

[0021] A method for treating wastewater from polyester polyol raw materials using a recycling treatment device. S1: The wastewater is pumped into the sewage tank, and then pumped out by the sewage pump and discharged into the first sedimentation zone through the drain pipe; S2: The chemical solution inside the chemical tank is transported through the chemical dosing pump to the first sedimentation zone, the second sedimentation zone, and the water tank via the chemical dosing pipe to treat the sewage. The water dosing component is used to replenish the water in the chemical tank. After the chemical is added to the chemical tank, the chemical and water are stirred by the stirring component. S3: Wastewater undergoes initial sedimentation in the first sedimentation zone. Water from the top of the first sedimentation zone flows into the second sedimentation zone through an L-shaped plate and a guide pipe, where the wastewater undergoes secondary sedimentation. S4: The wastewater after secondary sedimentation is transported to the water tank through the outlet pipe, and then treated with chemicals. The treated water is then transported to the water purification pool through the water purification pump. S5: The sewage pump can draw the sediment at the bottom of the first and second sedimentation zones into the filter cylinder. The drive motor starts and drives the filter cylinder to rotate. The sewage drips through the filter cylinder into the filtered water collection tank. The sediment will move towards the guide cylinder under the guidance of the spiral plate and finally fall into the sediment collection tank.

[0022] The technical effects and advantages of this invention are as follows: The present invention provides a sewage pump that can extract sediment, drive a motor to rotate a filter cylinder, and work with a spiral plate to achieve rapid separation of sediment and wastewater. A filtered water collection tank recovers dripping wastewater, and a sediment collection tank collects sediment in a centralized manner. The separation is thorough and easy to operate, which greatly reduces the amount of sediment requiring secondary treatment and improves the overall treatment efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a wastewater recycling treatment device and method for polyester polyol raw materials according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a wastewater recycling treatment device and method for polyester polyol raw materials according to the present invention. Figure 2 ; Figure 3 This is a front view of a polyester polyol raw material wastewater recycling treatment device and treatment method according to the present invention. Figure 4 This is a schematic diagram of the sedimentation treatment section of a polyester polyol raw material wastewater recycling treatment device and treatment method of the present invention. Figure 5 This is a schematic diagram of the spiral plate structure of a polyester polyol raw material wastewater recycling treatment device and treatment method of the present invention. Figure 6 This is a schematic diagram of the tank structure of a polyester polyol raw material wastewater recycling treatment device and treatment method according to the present invention. Figure 7 This is a schematic diagram of the sedimentation section of a polyester polyol raw material wastewater recycling treatment device and treatment method of the present invention.

[0024] In the picture: 1. Sewage treatment unit; 101. Sewage tank; 102. Sewage pump; 103. Drainage pipe; 2. Sedimentation treatment section; 201. Sewage pump; 202. Support frame; 203. Filter cartridge; 204. Spiral plate; 205. Bearing housing; 206. Support roller; 207. Drive motor; 208. Support plate; 209. Water spray assembly; 210. Filtered water collection tank; 211. Sediment collection tank; 212. Guide cylinder; 3. Sedimentation section; 301. Tank body; 302. First sedimentation zone; 303. Second sedimentation zone; 304. L-shaped plate; 305. Guide pipe; 4. Dosing section; 401. Chemical tank; 402. Dosing pump; 403. Dosing pipe; 404. Water addition assembly; 405. Mixing assembly; 5. Water collection section; 501. Water outlet pipe; 502. Water tank; 503. Water pump; 504. Water purification pool. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] This invention provides, for example Figures 1 to 7 The device and method for recycling and treating wastewater from polyester polyol raw materials, as shown, include a wastewater section 1, which includes a wastewater tank 101. A wastewater pump 102 is installed on the wastewater tank 101, and a drain pipe 103 is installed at the output end of the wastewater pump 102. The wastewater tank 101 serves as the basic carrier for temporary storage of wastewater. The wastewater pump 102 is fixed to the wastewater tank 101 by a mounting frame to extract wastewater. The drain pipe 103 is connected to the output end of the wastewater pump 102 to complete the wastewater transportation. The wastewater tank 101 provides a centralized storage space for polyester polyol raw material wastewater. The wastewater pump 102 is the power component that extracts wastewater from the wastewater tank 101. The drain pipe 103 guides the extracted wastewater to the first sedimentation zone 302, providing transportation support for subsequent sedimentation treatment. The pumping power of the wastewater pump 102 is adjustable to adapt to different wastewater transportation needs. The pipeline connection structure of the drain pipe 103 ensures leak-free wastewater transportation, realizing the connection between wastewater storage and treatment stages.

[0027] It also includes a sedimentation section 3, which is located on the right side of the wastewater section 1. The sedimentation section 3 includes a tank body 301, in which a first sedimentation zone 302 and a second sedimentation zone 303 are provided. An L-shaped plate 304 is fixed in the first sedimentation zone 302. The sedimentation section 3 also includes a guide pipe 305, which is fixed in the second sedimentation zone 303. The guide pipe 305 connects the first sedimentation zone 302 and the second sedimentation zone 303. The first sedimentation zone 302 and the second sedimentation zone 303 form a two-stage sedimentation space inside the tank body 301. The L-shaped plate 304 guides the wastewater in the first sedimentation zone 302. The guide pipe 305 realizes the connection and transmission of wastewater between the first sedimentation zone 302 and the second sedimentation zone 303, thus constructing the structural basis for graded sedimentation. The first sedimentation zone 302 completes the initial sedimentation of wastewater. The L-shaped plate 304 blocks the impurities settled in the first sedimentation zone 302 from flowing with the water, allowing only the upper clear liquid to pass through. The guide pipe 305 introduces the upper clear liquid in the first sedimentation zone 302 into the second sedimentation zone 303, where the second sedimentation zone 303 completes the secondary sedimentation of wastewater. The staged sedimentation design improves the sedimentation effect of wastewater, allowing impurities in the wastewater to be fully separated.

[0028] It also includes multiple sets of dosing units 4, which are located in front of the sedimentation unit 3. Each dosing unit 4 includes a medicine tank 401, a dosing pump 402 installed at the bottom of the medicine tank 401, a dosing pipe 403 connected to the output end of the dosing pump 402, and a water addition assembly 404 and a stirring assembly 405 installed at the top of the medicine tank 401. The medicine tank 401 is used for storing medicines. The dosing pump 402 is installed at the bottom of the medicine tank 401 to realize the extraction and delivery of medicines. The water addition assembly 404 provides water replenishment for the medicine tank 401. Medicines can be added directly at the top of the medicine tank 401. The chemical tank 401 is used to store the chemicals for treating wastewater, providing a raw material guarantee for the dosing process. The dosing pump 402 provides power for the delivery of the chemicals, drawing out the chemicals from the chemical tank 401. The dosing pipe 403 guides the drawn chemicals to the first sedimentation zone 302, the second sedimentation zone 303, and the water tank 502, respectively, to achieve simultaneous dosing in multiple zones. The water dosing component 404 can replenish the water in the chemical tank 401, and mix it with the chemicals to form a solution that meets the concentration requirements, ensuring the continuous and stable operation of the dosing process.

[0029] The stirring assembly 405 includes a stirring motor and a stirring rod. The stirring motor is fixed to the top of the medicine tank 401, and the stirring rod is fixed to the output end of the stirring motor. The stirring motor is the power output component, and the stirring rod receives the power to rotate. Both are assembled on the top of the medicine tank 401, and the stirring rod extends into the interior of the medicine tank 401, forming a mixing structure for the medicine and water. After the stirring motor is powered on, it outputs rotational power, driving the stirring rod at the bottom to rotate inside the medicine tank 401. When the water addition assembly 404 adds water and medicine to the medicine tank 401, the rotation of the stirring rod allows the medicine and water to mix thoroughly inside the medicine tank 401, quickly preparing a uniform medicine solution. This prevents the medicine from settling at the bottom of the medicine tank 401 and affecting its efficacy. The stirring speed can be adjusted according to the medicine preparation requirements to ensure the mixing effect of different proportions of medicine solutions, providing qualified raw materials for subsequent wastewater treatment.

[0030] It also includes a purified water collection unit 5, which is located behind the sedimentation unit 3. The purified water collection unit 5 includes an outlet pipe 501, which is connected to the second sedimentation zone 303. The output end of the outlet pipe 501 is connected to a water tank 502. A purified water pump 503 is installed at the bottom of the water tank 502. The output end of the purified water pump 503 is connected to a purified water pool 504. The outlet pipe 501 enables the connection of wastewater between the second sedimentation zone 303 and the water tank 502. The water tank 502 provides space for subsequent wastewater treatment. The purified water pump 503 is the power component for pumping and transporting purified water. The purified water pool 504 is the final carrier for storing purified water, forming a complete process of wastewater purification and collection. The outlet pipe 501 introduces the wastewater after secondary sedimentation in the second sedimentation zone 303 into the water tank 502. The wastewater undergoes subsequent chemical treatment in the water tank 502 to achieve deep purification. The water pump 503 extracts the treated water from the water tank 502. The water purification pool 504 receives and stores the extracted water. The purified water can be reused in the production of polyester polyol raw materials to achieve the recycling of water resources.

[0031] It also includes a sedimentation treatment unit 2, which is located on the right side of the sedimentation unit 3. The sedimentation treatment unit 2 includes a sewage pump 201 and a support 202. A filter cylinder 203 is rotatably mounted on the support 202. A spiral plate 204 is installed inside the filter cylinder 203. The filter cylinder 203 is inclined. The sedimentation treatment unit 2 also includes a water spraying assembly 209, which is located on the side of the filter cylinder 203.

[0032] The sedimentation treatment unit 2 also includes a bearing seat 205, a support roller 206, a drive motor 207, and a support plate 208. The support plate 208 is fixed at both ends of the filter cartridge 203. The support roller 206 is in sliding contact with the support plate 208. The support roller 206 is fixed on the bearing seat 205, which is fixed on the bracket 202. The drive motor 207 is fixed on the bracket 202, and its output end is connected to the support roller 206. The bearing seat 205 provides fixed support for the support roller 206. The sliding cooperation between the support roller 206 and the support plate 208 provides support and guidance for the rotation of the filter cartridge 203. The drive motor 207 outputs rotational power to the power unit. The support plate 208 provides a connecting structure for the cooperation between the filter cartridge 203 and the support roller 206, together achieving stable rotation of the filter cartridge 203.

[0033] The bracket 202 is higher on the left and lower on the right. The bearing seat 205 is fixed on the bracket 202 to provide an installation base for the support roller 206. The support plate 208 is fixed at both ends of the filter cylinder 203. The sliding contact between the support plate 208 and the support roller 206 makes the rotation of the filter cylinder 203 more stable. After the drive motor 207 is powered on, it outputs power to drive the support roller 206 to rotate. The support roller 206 drives the filter cylinder 203 to rotate synchronously through the cooperation with the support plate 208. The water spray assembly 209 is connected to a water pump. The water pump outputs clean water and sprays it out through the nozzle of the water spray assembly 209, washing away the impurities adhering to the inside of the filter cylinder 203 to the bottom of the filter cylinder 203. Finally, it falls into the sediment collection box 211 under the guidance of the spiral plate 204.

[0034] The sedimentation treatment unit 2 also includes a filtered water collection tank 210, a sediment collection tank 211, and a guide cylinder 212. The filtered water collection tank 210 is located at the bottom of the filter cylinder 203, and the sediment collection tank 211 is located at the bottom of the guide cylinder 212. The guide cylinder 212 is fixed to the right end of the filter cylinder 203. The filtered water collection tank 210 receives the wastewater dripping from the filter cylinder 203, the guide cylinder 212 provides a guiding channel for the discharge of sediment in the filter cylinder 203, and the sediment collection tank 211 receives the sediment discharged from the guide cylinder 212. The three together form a separation and collection structure for sediment and wastewater.

[0035] During the rotation of the filter cylinder 203, the wastewater inside drips through the gaps into the filter water collection tank 210 at the bottom, realizing wastewater recycling. The spiral plate 204 inside the filter cylinder 203 drives the sediment to move towards the guide cylinder 212 at the right end. The guide cylinder 212 guides the sediment to the sediment collection tank 211 at its bottom, completing the centralized collection of sediment. The wastewater collected in the filter water collection tank 210 can be returned to the treatment stage. The centralized collection of sediment in the sediment collection tank 211 facilitates subsequent unified treatment, realizing efficient separation and classified collection of sediment and wastewater, and improving the overall efficiency of wastewater treatment.

[0036] A method for treating wastewater from polyester polyol raw materials using a recycling treatment device. S1: The wastewater is pumped into the sewage tank 101, and then pumped out by the sewage pump 102 and discharged into the first sedimentation zone 302 through the drain pipe 103; S2: The chemical solution inside the chemical tank 401 is transported through the chemical dosing pump 402 to the first sedimentation zone 302, the second sedimentation zone 303, and the water tank 502 via the chemical dosing pipe 403 to treat the sewage. The water dosing component 404 is used to replenish the chemical tank 401 with water. After the chemical is added to the chemical tank 401, the chemical and water are stirred by the stirring component 405. S3: Wastewater undergoes preliminary sedimentation in the first sedimentation zone 302. Water at the top of the first sedimentation zone 302 flows into the second sedimentation zone 303 through the L-shaped plate 304 and the guide pipe 305. Wastewater undergoes secondary sedimentation in the second sedimentation zone 303. S4: The wastewater after secondary sedimentation is transported to the water tank 502 through the outlet pipe 501, and then treated with chemicals. The treated water is then transported to the water purification pool 504 through the water purification pump 503. S5: The sewage pump 201 can pump the sediment at the bottom of the first sedimentation zone 302 and the second sedimentation zone 303 into the filter cylinder 203. The drive motor 207 starts and drives the filter cylinder 203 to rotate. The sewage drips from the filter cylinder 203 into the filtered water collection tank 210. The sediment will move towards the guide cylinder 212 under the guidance of the spiral plate 204 and finally fall into the sediment collection tank 211.

[0037] Working principle: First, the wastewater from polyester polyol raw materials is pumped into the sewage tank 101 for temporary storage. Then, the wastewater is pumped out by the sewage pump 102 and transported to the first sedimentation zone 302 through the drain pipe 103 for further treatment. The water addition component 404 adds water to the chemical tank 401 and adds chemicals. After being stirred and mixed by the stirring component 405, the solution is then drawn out by the dosing pump 402 and transported through the dosing pipe 403 to the first sedimentation zone 302, the second sedimentation zone 303, and the water tank 502 for chemical treatment of the wastewater. The wastewater first undergoes preliminary sedimentation in the first sedimentation zone 302. The supernatant is guided to the second sedimentation zone 302 through the L-shaped plate 304 and the guide pipe 305. 03. Secondary sedimentation is further completed in the second sedimentation zone 303. After secondary sedimentation in the second sedimentation zone 303, the wastewater is transported to the water tank 502 through the outlet pipe 501. After further deep treatment with chemicals, the purified water is drawn by the purified water pump 503 and transported to the purified water pool 504 for storage. The sediment at the bottom of the first sedimentation zone 302 and the second sedimentation zone 303 is drawn into the filter cylinder 203 by the sewage pump 201. The drive motor 207 is started to drive the filter cylinder 203 to rotate. The wastewater drips from the filter cylinder 203 to the filtered water collection tank 210 for recycling. The sediment is guided by the spiral plate 204 to the guide cylinder 212 and finally falls into the sediment collection tank 211 for centralized collection.

[0038] Finally, it should be noted that the above 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 recycling treatment device for polyester polyol raw materials, comprising a wastewater section (1), characterized in that: It also includes a sedimentation section (3), which is located on the right side of the wastewater section (1), and multiple sets of dosing sections (4), which are located on the front side of the sedimentation section (3), and a purified water collection section (5), which is located on the rear side of the sedimentation section (3). It also includes a precipitation treatment unit (2), which is located on the right side of the precipitation unit (3); The sedimentation treatment unit (2) includes a sewage pump (201) and a support (202). A filter cylinder (203) is rotatably mounted on the support (202). A spiral plate (204) is installed inside the filter cylinder (203). The filter cylinder (203) is inclined. The sedimentation treatment unit (2) also includes a water spray assembly (209), which is located on the side of the filter cylinder (203).

2. The wastewater recycling treatment device for polyester polyol raw materials according to claim 1, characterized in that: The sewage section (1) includes a sewage tank (101), a sewage pump (102) is installed on the sewage tank (101), and a drain pipe (103) is installed at the output end of the sewage pump (102).

3. The wastewater recycling treatment device for polyester polyol raw materials according to claim 1, characterized in that: The sedimentation section (3) includes a pool body (301), in which a first sedimentation zone (302) and a second sedimentation zone (303) are provided. An L-shaped plate (304) is fixed in the first sedimentation zone (302). The sedimentation section (3) also includes a guide pipe (305), which is fixed in the second sedimentation zone (303) and connects the first sedimentation zone (302) and the second sedimentation zone (303).

4. The wastewater recycling treatment device for polyester polyol raw materials according to claim 1, characterized in that: The dosing unit (4) includes a medicine tank (401), a dosing pump (402) is installed at the bottom of the medicine tank (401), a dosing pipe (403) is connected to the output end of the dosing pump (402), and a water dosing assembly (404) and a stirring assembly (405) are installed at the top of the medicine tank (401).

5. The wastewater recycling treatment device for polyester polyol raw materials according to claim 4, characterized in that: The stirring assembly (405) includes a stirring motor and a stirring rod. The stirring motor is fixed to the top of the medicine tank (401), and the stirring rod is fixed to the output end of the stirring motor.

6. The wastewater recycling treatment device for polyester polyol raw materials according to claim 3, characterized in that: The water collection unit (5) includes a water outlet pipe (501), which is connected to the second sedimentation zone (303). The output end of the water outlet pipe (501) is connected to a water tank (502). A water purification pump (503) is installed at the bottom of the water tank (502), and the output end of the water purification pump (503) is connected to a water purification pool (504).

7. The wastewater recycling treatment device for polyester polyol raw materials according to claim 1, characterized in that: The sedimentation treatment unit (2) further includes a bearing seat (205), a support roller (206), a drive motor (207), and a support plate (208). The support plate (208) is fixed at both ends of the filter cylinder (203). The support roller (206) is in sliding contact with the support plate (208). The support roller (206) is fixed on the bearing seat (205). The bearing seat (205) is fixed on the bracket (202). The drive motor (207) is fixed on the bracket (202), and the output end of the drive motor (207) is connected to the support roller (206).

8. The wastewater recycling treatment device for polyester polyol raw materials according to claim 1, characterized in that: The sedimentation treatment unit (2) further includes a filtered water collection tank (210), a sediment collection tank (211), and a guide cylinder (212). The filtered water collection tank (210) is located at the bottom of the filter cylinder (203), the sediment collection tank (211) is located at the bottom of the guide cylinder (212), and the guide cylinder (212) is fixed to the right end of the filter cylinder (203).

9. A treatment method for a polyester polyol raw material wastewater recycling treatment device, used in the automotive water-side manifold device of the integrated valve group as described in claims 1-8, characterized in that: S1: The wastewater is pumped into the sewage tank (101), and then pumped out by the sewage pump (102) and discharged into the first sedimentation zone (302) through the drain pipe (103); S2: The chemical solution inside the chemical tank (401) is transported through the chemical dosing pump (402) to the first sedimentation zone (302), the second sedimentation zone (303), and the water tank (502) via the chemical dosing pipe (403) to treat the sewage. The water dosing component (404) is used to replenish the chemical tank (401). After the chemical is added to the chemical tank (401), the chemical and water are stirred by the stirring component (405). S3: Wastewater undergoes preliminary sedimentation in the first sedimentation zone (302). Water at the top of the first sedimentation zone (302) flows into the second sedimentation zone (303) through the L-shaped plate (304) and the guide pipe (305). Wastewater undergoes secondary sedimentation in the second sedimentation zone (303). S4: The wastewater after secondary sedimentation is transported to the water tank (502) through the outlet pipe (501), and then treated with chemicals. The treated clean water is then transported to the clean water pool (504) through the clean water pump (503). S5: The sewage pump (201) can pump the sediment at the bottom of the first sedimentation zone (302) and the second sedimentation zone (303) into the filter cylinder (203). The drive motor (207) starts and drives the filter cylinder (203) to rotate. The sewage drips from the filter cylinder (203) into the filtered water collection tank (210). The sediment will move towards the guide cylinder (212) under the guidance of the spiral plate (204) and finally fall into the sediment collection tank (211).

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