A wastewater treatment system in textile oil production

Abstract

The application relates to a wastewater treatment system in textile oil production and relates to the related technical field of textile oil wastewater treatment. The system comprises a rack, a treatment box, a pretreatment unit, an adjusting pool, a partition, a physical interception area, a coagulation air flotation pool and a deep oxidation tank; the system further comprises a wastewater inlet pipe, an inlet channel, a first conveying pipeline, a second conveying pipeline and a discharge pipeline. The wastewater treatment system in textile oil production of the application introduces the wastewater to be treated into the system through the wastewater inlet pipe, and the wastewater enters the pretreatment unit through the inlet channel; the treated wastewater flows into the adjusting pool, and passes through the partition and the first conveying pipeline to enter the physical interception area; the intercepted wastewater enters the coagulation air flotation pool through the second conveying pipeline for coagulation air flotation treatment; finally, the wastewater flowing out of the coagulation air flotation pool flows into the deep oxidation tank, and is discharged from the system through the discharge pipeline.

Description

Technical Field

[0001] This application relates to the technical field of textile oil wastewater treatment, and in particular to a wastewater treatment system for textile oil production. Background Technology

[0002] Wastewater generated during the production of textile oiling agents contains various chemical substances. Direct discharge without treatment will cause serious environmental pollution. Traditional biological treatment methods utilize microorganisms to decompose organic matter. This method is low-cost, but its slow processing speed and high requirements for the stability of water quality and pollutant composition often result in poor performance when faced with fluctuations in various pollutants. Chemical precipitation can effectively remove certain heavy metal ions and suspended solids, but this method also suffers from secondary pollution and requires large amounts of chemicals, leading to high costs. Furthermore, membrane separation technology performs well in removing fine particles and some organic matter, but its effectiveness is often unsatisfactory in complex wastewater systems, especially those containing multiple pollutants, and it usually needs to be used in combination with other treatment methods. In contrast, although existing adsorption filtration methods can effectively remove certain wastewater pollutants, they also have some shortcomings. Long-term use leads to adsorbent saturation, requiring frequent replacement. This not only increases treatment costs but may also affect treatment efficiency due to operational inconvenience caused by frequent replacements. Therefore, existing equipment and methods for treating textile oil wastewater still have many defects and shortcomings, especially when dealing with complex wastewater systems, where a single technology is often insufficient to meet the treatment requirements. Utility Model Content

[0003] In order to address the shortcomings of existing wastewater treatment systems in textile oil production due to their inherent design characteristics, the inventors have found that existing equipment and methods for treating textile oil wastewater still have many defects and deficiencies, especially when dealing with complex wastewater systems, where a single technology often cannot meet the treatment requirements.

[0004] In view of the situation, this application provides a wastewater treatment system for textile oil production.

[0005] The wastewater treatment system for textile oil production provided in this application adopts the following technical solution: including a frame, a treatment box fixedly connected to the frame, a pretreatment unit set on one side of the treatment box, an equalization tank connected to the pretreatment unit, a partition set between the equalization tank and the pretreatment unit, a physical interception zone connected to the equalization tank, a coagulation flotation tank connected to the physical interception zone, and a deep oxidation tank set on the lower end face of the coagulation flotation tank; It also includes a wastewater inlet pipe connected to the treatment tank, an inlet channel located on the lower end face of the partition, a first conveying pipe located between the equalization tank and the physical interception zone, a second conveying pipe located between the physical interception zone and the coagulation flotation tank, and a discharge pipe connected to the deep oxidation tank.

[0006] By adopting the above technical solution, the pretreatment unit performs preliminary purification of wastewater using physical or chemical methods to reduce the load on subsequent treatment; the equalization tank is used to regulate the water quality and quantity of wastewater to ensure the stability and efficiency of subsequent treatment processes; the baffle and the first conveying pipe separate the equalization tank from the physical interception zone, which further purifies the water quality by intercepting larger suspended solids; the coagulation and flotation tank uses coagulants to cause fine particles to agglomerate and float into flocs, which are then removed by flotation; the deep oxidation tank uses oxidation to further remove organic matter and reducing substances from the water, improving the water purification effect; the wastewater inlet pipe introduces the wastewater to be treated into the system, which enters the pretreatment unit through the inlet channel; the treated wastewater flows into the equalization tank, passes through the baffle and the first conveying pipe into the physical interception zone; the intercepted wastewater then enters the coagulation and flotation tank through the second conveying pipe for coagulation and flotation treatment; finally, the wastewater from the coagulation and flotation tank flows into the deep oxidation tank and is discharged from the system through the discharge pipe.

[0007] As a preferred embodiment, the pretreatment unit includes a coarse screen and a fine screen arranged sequentially along the water flow direction.

[0008] By adopting the above technical solution, the coarse screen and fine screen in the pretreatment unit respectively play the role of intercepting larger particles and fine impurities, effectively removing suspended and floating matter in wastewater and reducing the pressure on subsequent treatment units.

[0009] As a preferred embodiment, the conditioning tank is equipped with a pH meter and a stirrer.

[0010] By adopting the above technical solution, the pH meter and agitator in the equalization tank can automatically monitor and adjust the pH value of the water, and promote water mixing through agitation to ensure a stable and suitable pH value.

[0011] As a preferred embodiment, the physical interception zone includes a filter assembly disposed below the water outlet of the first delivery pipe and a sand and gravel bed disposed on the lower end face of the filter assembly.

[0012] By adopting the above technical solution, the filter components and sand and gravel bed surface in the physical interception zone further filter out fine particulate matter, and the sand and gravel bed surface provides a medium for the growth of biofilm, promoting the biological treatment process.

[0013] The coagulation flotation tank is equipped with an inclined plate filter group positioned relative to the outlet end of the second conveying pipe, and a composite catalyst dosing device connected to the second conveying pipe.

[0014] By adopting the above technical solutions, the inclined plate filter group and composite catalyst dosing device in the coagulation flotation tank help remove suspended solids and organic matter from the water and improve the water transparency.

[0015] As a preferred embodiment, the deep oxidation tank is equipped with ultraviolet lamps, an ozone generator, and an aeration unit located on the lower end face of the inner cavity of the deep oxidation tank.

[0016] By adopting the above technical solutions, the ultraviolet lamps and ozone generators in the deep oxidation tank can effectively degrade organic matter and reduce microbial content in the water, while the aeration unit further enhances the oxidation effect by increasing dissolved oxygen in the water.

[0017] As a preferred embodiment, the coarse grid has a mesh size of 15mm-20mm, and the fine screen has a mesh diameter of 0.5mm-1mm.

[0018] By adopting the above technical solution, firstly, when the wastewater passes through the coarse screen, larger suspended solids and floating objects are intercepted between the screen bars; then, the wastewater continues to flow through the fine screen, where fine suspended solids and impurities are further filtered, thereby ensuring that the wastewater entering the subsequent treatment unit is relatively clean and effectively reducing its treatment burden.

[0019] As a preferred embodiment, the filter assembly includes at least three bag filters arranged in parallel, the bag filters having filtration accuracies of 50μm, 20μm and 5μm respectively; the sand and gravel bed surface is laid from bottom to top with a pebble layer, a quartz sand layer and an activated carbon particle layer, and the total thickness of the sand and gravel bed surface is 60-80cm.

[0020] By adopting the above technical solution, the filter components and sand and gravel bed in the physical interception zone further filter out fine particulate matter. The sand and gravel bed provides a medium for biofilm growth, promoting the biological treatment process. The three bag filters in the filter components are used to remove particles of different sizes. The bag filter with a filtration accuracy of 50μm mainly removes larger suspended particles, improving subsequent filtration efficiency; the bag filter with a filtration accuracy of 20μm further filters small particles, further improving water cleanliness; and the bag filter with a filtration accuracy of 5μm is mainly used to capture very small particles, ensuring that the final water quality reaches an extremely high level of purity. The structural design of the sand and gravel bed is also crucial. The bottom pebble layer provides good support, the middle quartz sand layer is responsible for further filtration and support of fine particles, and the top activated carbon granular layer removes organic matter and odors from the water through adsorption. The entire system, through layer-by-layer filtration and adsorption, forms a highly efficient filtration mechanism, effectively removing suspended solids, organic matter, and odors from the water, providing clear and transparent pure water.

[0021] As a preferred embodiment, the composite catalyst dosing device comprises a mixed dosing system for Fe2O3 / Al2O3 supported catalyst and persulfate activator.

[0022] By employing the above technical solution, the Fe2O3 / Al2O3 supported catalyst undertakes the main catalytic role, effectively degrading organic pollutants and improving wastewater treatment efficiency through selective catalytic reactions with pollutants in the wastewater. Meanwhile, the persulfate activator provides sufficient activation energy to activate the Fe2O3 / Al2O3 supported catalyst, enabling it to maintain high catalytic activity even at lower temperatures, further accelerating the reaction rate. The two are mixed at a dosage ratio of 1:0.2 to 0.5 to ensure effective catalyst activation and optimize wastewater treatment performance.

[0023] As a preferred embodiment, each of the ultraviolet lamps is a UVC lamp with a wavelength of 254nm, arranged in a three-dimensional grid pattern, and the spacing between the ultraviolet lamps is 15-20cm.

[0024] By employing the above technical solution, the UVC lamp directly generates ultraviolet sterilization, effectively killing microorganisms in the air and on surfaces, including bacteria and viruses. During the sterilization process, the lamp releases high-energy ultraviolet photons through radiation, disrupting the DNA structure of microorganisms and thus preventing their reproduction.

[0025] As a preferred embodiment, the ozone generator has an ozone output of 50-100 g / h and an ozone concentration controlled at 10-15 mg / L.

[0026] By adopting the above technical solution, the ozone generator first obtains oxygen and combines it with oxygen molecules through corona discharge or high-voltage discharge to generate ozone molecules; then, the generated ozone is precisely controlled by a concentration controller to achieve the required concentration level; finally, a stable power supply provides a continuous and stable power input to the generator, ensuring the high efficiency and stability of the entire reaction process.

[0027] As a preferred embodiment, the aeration unit includes an aeration pump fixedly installed on the lower end face of the treatment tank, an aeration main pipe connected to the aeration pump, and aeration branch pipes connected to the aeration main pipe, with aeration holes evenly arranged on each of the aeration branch pipes.

[0028] By adopting the above technical solution, the gas is evenly distributed to various areas of the treatment tank through the aeration pump and the aeration main pipe and aeration branch pipe, thereby achieving a highly efficient aeration process, improving the dissolved oxygen content of the water, promoting the activity of microorganisms in the water, and thus achieving the purpose of purifying the water quality.

[0029] As a preferred embodiment, the system further includes an oil scraping assembly disposed on the upper surface of the inclined plate filter assembly. The oil scraping assembly includes mounting brackets disposed on both sides of the upper surface of the coagulation flotation tank, a first rotating shaft connected to one side of the mounting bracket, a second rotating shaft disposed on the other side of the mounting bracket, a transmission component for connecting the first and second rotating shafts, a mounting plate connected to the transmission component, an oil scraping plate fixedly connected to the other end of the mounting plate, an oil storage tank disposed on one side of the upper surface of the coagulation flotation tank, and an oil discharge pipe connected to the oil storage tank. The first rotating shaft is externally connected to a drive motor, and the oil scraping plate is provided with an oil-absorbing felt, and the oil scraping plate is interference-fitted with the oil storage tank.

[0030] By adopting the above technical solution, the first rotating shaft is connected to the drive motor and is driven to rotate, thereby moving the oil scraper. The second rotating shaft is connected to the first rotating shaft through a transmission component, transmitting the rotational motion to the oil scraper. A mounting plate is fixedly connected to the second rotating shaft, and the oil scraper is mounted on its other end by a fixed connection. An oil-absorbing felt is provided on the oil scraper to absorb floating oil. It is interference-fitted with the oil storage tank to ensure that the oil scraper can effectively scrape the floating oil into the oil storage tank during movement. The oil storage tank is used to collect the floating oil brought in by the oil scraper, and the oil drain pipe drains the oil from the oil storage tank. In general, the working principle is that the drive motor drives the first rotating shaft to rotate, which in turn drives the transmission component to rotate, thereby driving the second rotating shaft and the oil scraper to rotate. The oil-absorbing felt on the oil scraper absorbs the floating oil on the surface of the tank, and the interference fit between the oil scraper and the oil storage tank allows the floating oil to be scraped into the oil storage tank. Finally, the oil-water mixture is discharged through the oil drain pipe.

[0031] In summary, this application includes the following beneficial technical effects: 1. The pretreatment unit initially purifies the wastewater to reduce the load on subsequent treatment processes; the equalization tank regulates the quality and quantity of the wastewater to ensure the stability and efficiency of subsequent treatment processes; the baffle and the first conveying pipeline separate the equalization tank from the physical interception zone, which further purifies the water by intercepting larger suspended solids; the coagulation and flotation tank adds coagulants to cause fine particles to agglomerate and float to the surface as flocs, which are then removed by flotation; the deep oxidation tank uses oxidation to further remove organic matter and reducing substances from the water. Thus, through pretreatment, equalization, physical interception, coagulation and flotation, and deep oxidation in the wastewater treatment process, the goal of water purification is achieved.

[0032] 2. The drive motor drives the first rotating shaft to rotate, which in turn drives the transmission components to rotate the second rotating shaft and the oil scraper. The oil-absorbing felt on the oil scraper absorbs the floating oil on the surface of the pool. The interference fit between the oil scraper and the oil storage tank causes the floating oil to be scraped into the oil storage tank. Finally, the oil-water mixture is discharged through the oil drain pipe. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment system in the production of textile oils according to this application; Figure 2 This is a partial half-sectional view of the overall structure of a wastewater treatment system in textile oil production according to this application. Figure 3 This application relates to a wastewater treatment system for textile oil production. Figure 2 A structural schematic diagram of the front view; Figure 4 This is a schematic diagram of the pretreatment unit in a wastewater treatment system for textile oil production according to this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Frame; 100. Processing tank; 11. Pretreatment unit; 111. Coarse screen; 112. Fine screen; 12. Equalization tank; 121. pH meter; 122. Agitator; 21. Physical interception zone; 211. Filter assembly; 212. Sand and gravel bed surface; 22. Coagulation flotation tank; 221. Inclined plate filter assembly; 23. Deep oxidation tank; 24. Oil storage tank; 241. Oil discharge pipe; 31. Wastewater inlet pipe; 32. First conveying pipe; 33. Second conveying pipe; 34. Discharge pipe; 41. First rotating shaft; 42. Second rotating shaft; 43. Transmission component; 441. Mounting plate; 442. Oil scraper; 51. Aeration pump; 511. Main aeration pipe; 512. Aeration branch pipe; 6. Ultraviolet lamp. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Please refer to the details. Figure 1 , Figure 2 , Figure 3 and Figure 4 This application discloses a wastewater treatment system for textile oil production. It includes a frame 1, a treatment tank 100 fixedly connected to the frame 1, a pretreatment unit 11 disposed on one side of the treatment tank 100, an equalization tank 12 connected to the pretreatment unit 11, a partition disposed between the equalization tank 12 and the pretreatment unit 11, a physical interception zone 21 connected to the equalization tank 12, a coagulation flotation tank 22 connected to the physical interception zone 21, and a deep oxidation tank 23 disposed on the lower end face of the coagulation flotation tank 22. Please refer to the details. Figure 2 , Figure 3 and Figure 4 It also includes a wastewater inlet pipe 31 connected to the treatment tank 100, an inlet channel located on the lower end face of the partition, a first conveying pipe 32 located between the equalization tank 12 and the physical interception zone 21, a second conveying pipe 33 located between the physical interception zone 21 and the coagulation flotation tank 22, and a discharge pipe 34 connected to the deep oxidation tank 23; the pretreatment unit 11 performs preliminary purification of wastewater using physical or chemical methods to reduce the load on subsequent treatment; the equalization tank 12 is used to regulate the water quality and quantity of wastewater to ensure the stability and efficiency of subsequent treatment processes; the partition and the first conveying pipe 32 separate the equalization tank 12 from the physical interception zone 21, which intercepts larger suspended solids. Floating solids further purify the water quality; the coagulation flotation tank 22 adds coagulant to cause fine particles to agglomerate and float into flocs, which are then removed by flotation; the deep oxidation tank 23 uses oxidation to further remove organic matter and reducing substances in the water, improving the water purification effect; the wastewater inlet pipe 31 introduces the wastewater to be treated into the system and enters the pretreatment unit 11 through the inlet channel; the treated wastewater flows into the equalization tank 12, passes through the baffle and the first conveying pipe 32 and enters the physical interception zone 21; the intercepted wastewater then enters the coagulation flotation tank 22 through the second conveying pipe 33 for coagulation flotation treatment; finally, the wastewater passing through the coagulation flotation tank 22 flows into the deep oxidation tank 23 and is discharged from the system through the discharge pipe 34.

[0037] Please refer to the details. Figure 2 and Figure 4 The pretreatment unit 11 includes a coarse screen 111 and a fine screen 112 arranged sequentially along the water flow direction. The coarse screen 111 and the fine screen 112 in the pretreatment unit 11 respectively play the role of intercepting larger particles and fine impurities, effectively removing suspended solids and floating solids in wastewater, and reducing the pressure on subsequent treatment units.

[0038] Please refer to the details. Figure 1 and Figure 4The equalization tank 12 is equipped with a pH meter 121 and a stirrer 122. The pH meter 121 and the stirrer 122 in the equalization tank 12 can automatically monitor and adjust the pH value of the water. By stirring, the water is mixed to ensure that the pH value is stable and suitable.

[0039] Please refer to the details. Figure 2 and Figure 4 The physical interception zone 21 includes a filter assembly 211 disposed below the outlet end of the first delivery pipe 32 and a sand and gravel bed 212 disposed on the lower end face of the filter assembly 211. The filter assembly 211 and the sand and gravel bed 212 in the physical interception zone 21 further filter out fine particles, and the sand and gravel bed 212 provides a medium for the growth of biofilm and promotes the biological treatment process.

[0040] Please refer to the details. Figure 3 and Figure 4 The coagulation flotation tank 22 is equipped with an inclined plate filter group positioned relative to the outlet end of the second conveying pipe 33 and a composite catalyst dosing device connected to the second conveying pipe 33; the inclined plate filter group and composite catalyst dosing device in the coagulation flotation tank 22 help remove suspended solids and organic matter in the water and improve the transparency of the water.

[0041] Please refer to the details. Figure 2 and Figure 3 The deep oxidation tank 23 is equipped with ultraviolet lamps 6, an ozone generator, and an aeration unit located on the lower end face of the inner cavity of the deep oxidation tank 23. Finally, the ultraviolet lamps 6 and the ozone generator in the deep oxidation tank 23 can effectively degrade organic matter in the water and reduce the content of microorganisms. The aeration unit further enhances the oxidation effect by increasing the dissolved oxygen in the water.

[0042] Please refer to the details. Figure 4 The coarse screen 111 has a mesh size of 15mm-20mm, and the fine screen 112 has a mesh diameter of 0.5mm-1mm. First, when the wastewater passes through the coarse screen 111, larger suspended solids and floating objects are intercepted between the screen bars. Then, the wastewater continues to flow through the fine screen 112, where smaller suspended solids and impurities are further filtered, thus ensuring that the wastewater entering the subsequent treatment unit is relatively clean and effectively reducing its treatment burden.

[0043] Please refer to the details. Figure 2 and Figure 4The filter assembly 211 includes at least three bag filters arranged in parallel, with filtration accuracies of 50μm, 20μm, and 5μm, respectively. The sand and gravel bed 212 consists of a 30-50mm pebble layer, a 10-20mm quartz sand layer, and a 2-5mm activated carbon granule layer, laid sequentially from bottom to top, with a total thickness of 60-80cm. The filter assembly 211 and the sand and gravel bed 212 in the physical interception zone 21 further filter out fine particulate matter. The sand and gravel bed 212 provides a medium for biofilm growth, promoting the biological treatment process. The three bag filters in filter assembly 211 are used to remove particles of different sizes. The 50μm bag filter primarily removes larger suspended particles, improving subsequent filtration efficiency; the 20μm bag filter further filters smaller particles, further enhancing water cleanliness; and the 5μm bag filter captures extremely fine particles, ensuring the final water reaches a very high level of purity. The structural design of the sand and gravel bed 212 is also crucial. The bottom 30-50mm pebble layer provides excellent support, the middle 10-20mm quartz sand layer further filters and supports fine particles, and the top 2-5mm activated carbon granular layer removes organic matter and odors from the water through adsorption. The entire system, through layered filtration and adsorption, forms a highly efficient filtration mechanism, effectively removing suspended solids, organic matter, and odors from the water, providing clear and transparent pure water.

[0044] Please refer to the details. Figure 1 and Figure 3 The composite catalyst dosing device comprises a mixed dosing system for Fe2O3 / Al2O3 supported catalyst and persulfate activator, with a dosing ratio of 1:0.2-0.5 by mass. The Fe2O3 / Al2O3 supported catalyst plays the primary catalytic role, effectively degrading organic pollutants and improving wastewater treatment efficiency through selective catalytic reactions with pollutants in the wastewater. The persulfate activator provides sufficient activation energy to activate the Fe2O3 / Al2O3 supported catalyst, enabling it to maintain high catalytic activity even at lower temperatures, further accelerating the reaction rate. The two are mixed at a dosing ratio of 1:0.2 to 0.5 to ensure effective catalyst activation and optimize wastewater treatment performance.

[0045] Please refer to the details. Figure 2 Each UV lamp 6 is a 254nm UVC lamp, arranged in a three-dimensional grid pattern, with a spacing of 15-20cm between the UV lamps. The UVC lamps are responsible for directly generating ultraviolet sterilization, effectively killing microorganisms in the air and on surfaces, including bacteria and viruses. During sterilization, the lamps release high-energy ultraviolet photons through radiation, which break the DNA structure of microorganisms, thereby preventing their reproduction.

[0046] Please refer to the details. Figure 2 The ozone generator produces 50-100 g / h of ozone, with an ozone concentration controlled at 10-15 mg / L. The ozone generator first obtains oxygen and then combines it with oxygen molecules through corona discharge or high-voltage discharge to generate ozone molecules. Subsequently, a concentration controller precisely controls the generated ozone to achieve the desired concentration level. Finally, a stable power supply provides a continuous and stable power input to the generator, ensuring the high efficiency and stability of the entire reaction process.

[0047] Please refer to the details. Figure 1 and Figure 2 The aeration unit includes an aeration pump 51 fixedly installed on the lower end face of the treatment tank 100, an aeration main pipe 511 connected to the aeration pump 51, and an aeration branch pipe 512 connected to the aeration main pipe 511. Each aeration branch pipe 512 is evenly provided with aeration holes with a diameter of 0.5mm-1mm and a hole spacing of 5-8cm. Powered by the aeration pump 51, the aeration main pipe 511 and the aeration branch pipe 512 evenly distribute the gas to various areas within the treatment tank 100, thereby achieving a highly efficient aeration process, improving the dissolved oxygen content of the water, promoting the activity of microorganisms in the water, and thus achieving the purpose of purifying the water quality.

[0048] Please refer to the details. Figure 2Additionally, it includes an oil-scraping assembly disposed on the upper surface of the inclined plate filter assembly 221. The oil-scraping assembly includes mounting brackets respectively disposed on both sides of the upper surface of the coagulation flotation tank 22, a first rotating shaft 41 connected to one side of the mounting brackets, a second rotating shaft 42 disposed on the other side of the mounting brackets, a transmission component 43 for connecting the first rotating shaft 41 and the second rotating shaft 42, a mounting plate 441 connected to the transmission component 43, an oil-scraping plate 442 fixedly connected to the other end of the mounting plate 441, an oil storage tank 24 disposed on one side of the upper surface of the coagulation flotation tank 22, and an oil discharge pipe 241 connected to the oil storage tank 24. The first rotating shaft 41 is externally connected to a drive motor. An oil-absorbing felt is disposed on the oil-scraping plate 442, and the oil-scraping plate 442 is press-fitted with the oil storage tank 24. The first rotating shaft 41 is connected to the drive motor and is driven to rotate, thereby moving the oil-scraping plate 442. The second rotating shaft 42 is connected to the first rotating shaft 41 through the transmission component 43, transmitting the rotational motion to the oil-scraping plate 442. Mounting plate 441 is fixedly connected to the second rotating shaft 42, and its other end is fixedly connected to the oil scraper 442. An oil-absorbing felt is provided on the oil scraper 442 to absorb floating oil. It is interference-fitted with the oil storage tank 24 to ensure that the oil scraper 442 effectively scrapes the floating oil into the oil storage tank 24 during operation. The oil storage tank 24 collects the floating oil carried in by the oil scraper 442, and the oil discharge pipe 241 discharges the oil from the oil storage tank 24. In general, the working principle is that the drive motor drives the first rotating shaft 41 to rotate, which in turn drives the transmission component 43 to rotate, thereby driving the second rotating shaft 42 and the oil scraper 442 to rotate. The oil-absorbing felt on the oil scraper 442 absorbs the floating oil on the surface of the tank. The interference fit between the oil scraper 442 and the oil storage tank 24 allows the floating oil to be scraped into the oil storage tank 24, and finally, the oil-water mixture is discharged through the oil discharge pipe 241.

[0049] The implementation principle of a wastewater treatment system in textile oil production according to an embodiment of this application is as follows: During use, the treated wastewater flows into the equalization tank 12, passes through the baffle and the first conveying pipe 32 and enters the physical interception zone 21; the intercepted wastewater then enters the coagulation and flotation tank 22 through the second conveying pipe 33 for coagulation and flotation treatment; finally, the wastewater passing through the coagulation and flotation tank 22 flows into the deep oxidation tank 23 and is discharged from the system through the discharge pipe 34. The drive motor drives the first rotating shaft 41 to rotate, which drives the transmission component 43 to drive the second rotating shaft 42 and the oil scraper 442 to rotate. The oil-absorbing felt on the oil scraper 442 absorbs the floating oil on the surface of the tank. The interference fit between the oil scraper 442 and the oil storage tank 24 causes the floating oil to be scraped into the oil storage tank 24. Finally, the oil-water mixture is discharged through the oil discharge pipe 241.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wastewater treatment system for textile oil production, characterized in that: Includes a frame (1), a processing box (100) fixedly connected to the frame (1), a pretreatment unit (11) disposed on one side of the processing box (100), an equalization tank (12) connected to the pretreatment unit (11), a partition disposed between the equalization tank (12) and the pretreatment unit (11), a physical interception zone (21) connected to the equalization tank (12), a coagulation flotation tank (22) connected to the physical interception zone (21), and a deep oxidation tank (23) disposed on the lower end face of the coagulation flotation tank (22); It also includes a wastewater inlet pipe (31) connected to the treatment tank (100), an inlet channel set on the lower end face of the partition, a first conveying pipe (32) set between the regulating tank (12) and the physical interception zone (21), a second conveying pipe (33) set between the physical interception zone (21) and the coagulation flotation tank (22), and a discharge pipe (34) connected to the deep oxidation tank (23).

2. The wastewater treatment system for textile oil production according to claim 1, characterized in that: The pretreatment unit (11) includes a coarse screen (111) and a fine screen (112) arranged sequentially along the water flow direction. The conditioning tank (12) is equipped with a pH meter (121) and a stirrer (122). The physical interception zone (21) includes a filter assembly (211) disposed below the outlet of the first delivery pipe (32) and a sand and gravel bed surface (212) disposed on the lower end face of the filter assembly (211). The coagulation flotation tank (22) is equipped with an inclined plate filter group installed at the outlet end of the second conveying pipe (33) and a composite catalyst dosing device connected to the second conveying pipe (33); The deep oxidation tank (23) is equipped with an ultraviolet lamp (6), an ozone generator, and an aeration unit located on the lower end face of the inner cavity of the deep oxidation tank (23).

3. The wastewater treatment system for textile oil production according to claim 2, characterized in that: The coarse grid (111) has a mesh size of 15mm-20mm, and the fine screen (112) has a mesh diameter of 0.5mm-1mm.

4. The wastewater treatment system for textile oil production according to claim 3, characterized in that: The filter assembly (211) includes at least three bag filters arranged in parallel. The sand and gravel bed (212) is laid with a pebble layer, a quartz sand layer and an activated carbon particle layer from bottom to top, and the total thickness of the sand and gravel bed (212) is 60-80cm.

5. A wastewater treatment system for textile oil production according to claim 4, characterized in that: Each of the ultraviolet lamps (6) is configured as a UVC lamp, and the distance between adjacent ultraviolet lamps (6) is 15-20cm.

6. A wastewater treatment system for textile oil production according to claim 5, characterized in that: The aeration unit includes an aeration pump (51) fixedly installed on the lower end face of the treatment box (100), an aeration main pipe (511) connected to the aeration pump (51), and an aeration branch pipe (512) connected to the aeration main pipe (511).

7. A wastewater treatment system for textile oil production according to claim 6, characterized in that: In addition, it also includes an inclined plate filter assembly (221), an oil scraping assembly disposed on the upper end face of the inclined plate filter assembly (221), the oil scraping assembly including mounting brackets respectively disposed on both sides of the upper end face of the coagulation flotation tank (22), a first rotating shaft (41) connected to one side of the mounting bracket, a second rotating shaft (42) disposed on the other side of the mounting bracket, a transmission component (43) for connecting the first rotating shaft (41) and the second rotating shaft (42), a mounting plate (441) connected to the transmission component (43), an oil scraping plate (442) fixedly connected to the other end of the mounting plate (441), an oil storage tank (24) disposed on one side of the upper end face of the coagulation flotation tank (22), and an oil discharge pipe (241) connected to the oil storage tank (24). The first rotating shaft (41) is externally connected to a drive motor.

8. A wastewater treatment system for textile oil production according to claim 7, characterized in that: The oil scraper (442) is provided with an oil-absorbing felt, and the oil scraper (442) is interference-fitted with the oil storage tank (24).

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