Wastewater treatment device
Patent Information
- Application Number
- CN202611157877.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-31
- Publication Date
- 2026-09-15
Smart Images
Figure CN122748874A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment equipment, and more particularly to a wastewater treatment device. Background Technology
[0002] The existing dyeing and finishing wastewater treatment process is as follows: the dyeing and finishing wastewater is treated by coagulation sedimentation, biochemical degradation and filtration in sequence. Among them, coagulation sedimentation and biochemical degradation require a long time, resulting in a long overall treatment cycle. Summary of the Invention
[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a wastewater treatment device.
[0004] The wastewater treatment apparatus of a first aspect of the present invention includes a jet cavitation reaction tank, a jet assembly, a lime slurry reaction tank, a polysilicon aluminum sulfate reaction tank, an inclined tube sedimentation tank, and a filter assembly. Two horizontally spaced brush rollers are installed at the top inside the jet cavitation reaction tank. The jet assembly includes an ejector, a water jet vacuum pump, a ferrous sulfate dosing tank, and a hydrogen peroxide dosing tank. The inlet of the ejector is connected to the outlet of the ferrous sulfate dosing tank, the hydrogen peroxide dosing tank, the water jet vacuum pump, and an external water source. The jet outlet of the ejector is located above the two brush rollers and faces the gap between them. The inlet of the water jet vacuum pump is connected to the bottom of the jet cavitation reaction tank. The lime slurry reaction tank is connected to the jet cavitation reaction tank. The polysilicon aluminum sulfate reaction tank is connected to the lime slurry reaction tank. The inclined tube sedimentation tank is connected to the polysilicon aluminum sulfate reaction tank, and the top of the inclined tube sedimentation tank has a supernatant outlet. A filter assembly for filtering the supernatant is connected to the supernatant outlet.
[0005] Furthermore, it also includes a base, on which the jet cavitation reaction tank, the lime slurry reaction tank, the polysilicon aluminum sulfate reaction tank, and the inclined tube sedimentation tank are all mounted.
[0006] Furthermore, a dosing tank is provided between the jet cavitation reaction tank and the lime slurry reaction tank, and the jet cavitation reaction tank is connected to the lime slurry reaction tank through the dosing tank.
[0007] Furthermore, the dosing tank is located to the right of the jet cavitation reaction tank, the polysilicon aluminum sulfate reaction tank is located behind the jet cavitation reaction tank, and the lime slurry reaction tank is located to the right of the polysilicon aluminum sulfate reaction tank and behind the dosing tank. The side wall at the bottom of the dosing tank and the side wall at the bottom of the jet cavitation reaction tank have a first communication port; There is a second communication port between the side wall at the top of the dosing tank and the side wall at the top of the lime slurry reaction tank; There is a third communication port between the bottom sidewall of the lime slurry reaction tank and the bottom sidewall of the polysilicate aluminum sulfate reaction tank; A connecting pipe is provided between the top of the polysilicon aluminum sulfate reaction tank and the bottom of the inclined tube sedimentation tank.
[0008] Furthermore, the connection point between the connecting pipe and the polysilicon aluminum sulfate reaction tank is located on the left side wall of the polysilicon aluminum sulfate reaction tank, and the connection point between the connecting pipe and the inclined tube sedimentation tank is located on the left side wall of the inclined tube sedimentation tank.
[0009] Furthermore, the jet cavitation reaction tank, the lime slurry reaction tank, the polysilicon aluminum sulfate reaction tank, and the dosing tank are all installed on one side of the inclined tube sedimentation tank.
[0010] Furthermore, the filtration assembly includes a security filter and a first transfer pump, wherein the inlet of the security filter is connected to the supernatant outlet, and the inlet of the first transfer pump is connected to the outlet of the security filter.
[0011] Furthermore, it also includes an intermediate water tank and a second transfer pump. The inlet and outlet of the intermediate water tank are respectively connected to the supernatant outlet and the inlet of the second transfer pump, and the outlet of the second transfer pump is connected to the inlet of the security filter.
[0012] Furthermore, it also includes a lime slurry dosing tank and a polysilicon aluminum sulfate dosing tank. The outlet of the lime slurry dosing tank is connected to the lime slurry reaction tank through a first conveying pipe, and a third transfer pump is provided on the first conveying pipe. The outlet of the polysilicon aluminum sulfate dosing tank is connected to the polysilicon aluminum sulfate reaction tank through a second conveying pipe, and a fourth transfer pump is provided on the second conveying pipe.
[0013] Furthermore, the water jet vacuum pump, the lime slurry dosing tank, the polysilicon aluminum sulfate dosing tank, the ferrous sulfate dosing tank, and the hydrogen peroxide dosing tank are all mounted on the base.
[0014] The wastewater treatment apparatus according to the present invention has at least the following technical effects: 1. The jet ejector can improve the dispersion of the reagent, shorten the reaction time, and simultaneously degrade some organic pollutants. The two brush rollers can effectively mitigate the impact force of the jet ejected by the jet ejector, avoid the generation of bubbles, and prevent bubbles from affecting the treatment effect. The lime slurry reaction tank and the polysilicon aluminum sulfate reaction tank can improve the wastewater treatment effect. When used in conjunction with the jet ejector and brush rollers, they can replace the traditional coagulation sedimentation and biochemical degradation process, greatly shortening the treatment cycle.
[0015] 2. The tank to be added and the jet cavitation reaction tank are directly connected through the first connecting port, the tank to be added and the lime slurry reaction tank are directly connected through the second connecting port, and the lime slurry reaction tank and the polysilicon aluminum sulfate reaction tank are directly connected through the third connecting port. All of these eliminate the need for pipes, thereby maximizing the use of excess space, optimizing space utilization, and ensuring a compact and reasonable layout.
[0016] The wastewater treatment method according to a second aspect of the present invention includes the wastewater treatment apparatus of the first aspect embodiment; and further includes the following steps: S1, the water jet vacuum pump starts, and the water jet vacuum pump circulates and draws the liquid in the jet cavitation reaction tank to the ejector. The external water source also delivers wastewater to the ejector under the action of the external pump. The ferrous sulfate dosing tank and the hydrogen peroxide dosing tank also deliver ferrous sulfate and hydrogen peroxide to the ejector respectively. The wastewater, the liquid in the jet cavitation reaction tank, ferrous sulfate and hydrogen peroxide are mixed in the ejector. The ejector sprays the mixed liquid at high speed, so that the liquid is sprayed downward from above the two brush rollers and sprayed into the gap between the two brush rollers. After being buffered and defoamed by the brush rollers, the liquid falls into the jet cavitation reaction tank below. S2, the liquid in the cavitation reaction tank is injected into the lime slurry reaction tank, and the lime slurry in the lime slurry reaction tank can react with the liquid; S3, the liquid in the lime slurry reaction tank enters the polysilicon aluminum sulfate reaction tank through the third connecting port, and the polysilicon aluminum sulfate in the polysilicon aluminum sulfate reaction tank can react with the liquid. S4, the liquid in the polysilicon aluminum sulfate reaction tank enters the bottom of the inclined tube sedimentation tank through the connecting pipe, and the inclined tube sedimentation tank precipitates the liquid; S5, the supernatant after sedimentation in the inclined tube sedimentation tank is discharged to the filter assembly through the supernatant outlet, where the filter assembly filters the supernatant. The wastewater treatment method according to the present invention has at least the following technical effects: 1. The jet ejector can improve the dispersion of the reagent, shorten the reaction time, and simultaneously degrade some organic pollutants. The two brush rollers can effectively mitigate the impact force of the jet ejected by the jet ejector, avoid the generation of bubbles, and prevent bubbles from affecting the treatment effect. The lime slurry reaction tank and the polysilicon aluminum sulfate reaction tank can improve the wastewater treatment effect. When used in conjunction with the jet ejector and brush rollers, they can replace the traditional coagulation sedimentation and biochemical degradation process, greatly shortening the treatment cycle.
[0017] Furthermore, S2 also includes the liquid in the jet cavitation reaction tank entering the dosing tank through the first connecting port, and the liquid in the dosing tank entering the lime slurry reaction tank through the second connecting port.
[0018] Furthermore, S5 also includes the supernatant in the inclined tube sedimentation tank entering the intermediate water tank, the second transfer pump, the security filter and the first transfer pump in sequence through the supernatant outlet. The security filter performs precision filtration on the supernatant, and the first transfer pump discharges or reuses the filtered liquid.
[0019] Furthermore, S5 also includes the option to reuse or directly discharge the water in the filtered supernatant.
[0020] Furthermore, the liquids in the jet cavitation reaction tank, the liquids in the dosing tank, the liquids in the lime slurry reaction tank, and the liquids in the polyaluminum sulfate reaction tank are stirred.
[0021] Furthermore, the inclined tube sedimentation tank undergoes periodic sludge removal.
[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0023] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the technical solutions taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of a wastewater treatment device from a certain perspective. Figure 2 This is a process flow diagram of a wastewater treatment device; Figure 3 A schematic diagram of the structure of the jet cavitation reaction tank, brush roller, and jet ejector. Figure 4 This is a schematic diagram of the jet cavitation reaction tank from a top view. Figure 5 This is a schematic diagram of the connection between the filter assembly and the inclined tube sedimentation tank. Figure 6 This is a schematic diagram of a wastewater treatment device from another perspective. Figure 7 This is a cross-sectional view of a wastewater treatment device.
[0024] Reference numerals: 100, spray cavitation reaction tank; 110, brush roller; 200, spray assembly; 210, jet injector; 220, water jet vacuum pump; 230, ferrous sulfate dosing tank; 240, hydrogen peroxide dosing tank; 300, lime slurry reaction tank; 310, third connecting port; 400, polysilicon aluminum sulfate reaction tank; 410, connecting pipe; 500, inclined tube sedimentation tank; 510, supernatant outlet; 600, filter assembly; 610, security filter; 620, first transfer pump; 700, dosing tank; 800, first connecting port; 810, second connecting port; 820, intermediate water tank; 900, second transfer pump; 910, lime slurry dosing tank; 921, first conveying pipe; 922, third transfer pump; 930, polysilicon aluminum sulfate dosing tank; 931, second conveying pipe; 932, fourth transfer pump. Detailed Implementation
[0025] The technical solutions of the present invention are described in detail below. Examples of these technical solutions are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The technical solutions described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0027] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0028] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0029] Reference Figure 1 , 2 As shown, the wastewater treatment device provided in the embodiments of the present invention includes a jet cavitation reaction tank 100, a jet assembly 200, a lime slurry reaction tank 300, a polysilicon aluminum sulfate reaction tank 400, an inclined tube sedimentation tank 500, and a filter assembly 600, as follows. Figure 3 As shown, two horizontally spaced brush rollers 110 are installed at the top inside the jet cavitation reaction tank 100; as Figure 2 , 3 As shown, the jet assembly 200 includes an ejector 210, a water jet vacuum pump 220, a ferrous sulfate dosing tank 230, and a hydrogen peroxide dosing tank 240. The inlet of the ejector 210 is connected to the outlets of the ferrous sulfate dosing tank 230, the hydrogen peroxide dosing tank 240, the water jet vacuum pump 220, and an external water source. The jet outlet α of the ejector 210 is located above the two brush rollers 110 and faces the gap between the two brush rollers 110. The inlet of the water jet vacuum pump 220 is connected to the bottom of the jet cavitation reaction tank 100. The lime slurry reaction tank 300 is connected to the jet cavitation reaction tank 100. The polysilicon aluminum sulfate reaction tank 400 is connected to the lime slurry reaction tank 300. The inclined tube sedimentation tank 500 is connected to the polysilicon aluminum sulfate reaction tank 400. The top of the inclined tube sedimentation tank 500 has a supernatant outlet 510. A filter assembly 600 for filtering the supernatant is connected to the supernatant outlet 510.
[0030] The jet injector 210 can improve the dispersion of the reagents, shorten the reaction time, and simultaneously degrade some organic pollutants (ferrous sulfate, hydrogen peroxide, and wastewater can degrade some organic pollutants when mixed in the jet injector 210). The two brush rollers 110 can effectively mitigate the impact force of the jet ejected from the jet injector 210, avoid the generation of bubbles, and prevent bubbles from affecting the treatment effect. The lime slurry reaction tank 300 and the polysilicon aluminum sulfate reaction tank 400 can improve the wastewater treatment effect. Therefore, when used in conjunction with the jet injector 210 and the brush rollers 110, they can replace the traditional coagulation sedimentation and biochemical degradation process, greatly shortening the treatment cycle.
[0031] During operation, the water jet vacuum pump 220 starts, circulating and drawing liquid from the jet cavitation reaction tank 100 to the ejector 210. An external water source, driven by an external pump, also supplies wastewater to the ejector 210. The ferrous sulfate dosing tank 230 and hydrogen peroxide dosing tank 240 also supply ferrous sulfate and hydrogen peroxide to the ejector 210, respectively. The wastewater, the liquid in the jet cavitation reaction tank 100, the ferrous sulfate, and the hydrogen peroxide mix within the ejector 210. The ejector 210 then jets the mixed liquid at high speed, causing it to be sprayed downwards from above the two brush rollers 110 into the gap between them. After being buffered and defoamed by the brush rollers 110, the liquid falls into the jet cavitation reaction tank 100 below. The hydrogen peroxide acts as a catalyst for the Fenton reaction, providing Fe²⁺. + Ferrous sulfate in Fe² + Catalytic decomposition produces OH, which can efficiently degrade recalcitrant organic matter, COD, color, and toxic substances in wastewater. At the same time, the jet cavitation of the ejector 210 utilizes the local high temperature (>5000K) and high pressure (>1000atm) generated by the collapse of microbubbles, which improves the dispersion of the reagent by 30% and shortens the reaction time by 40%. After the liquid enters the jet cavitation reaction tank 100, it then sequentially enters the lime slurry reaction tank 300, the polysilicon aluminum sulfate reaction tank 400, and the inclined tube sedimentation tank 500. When entering the lime slurry reaction tank 300, the lime slurry in the lime slurry reaction tank 300 can react with the liquid. During the reaction process, the pH value is adjusted (the acidic wastewater after the Fenton reaction is brought back to neutral), phosphorus is removed (calcium phosphate precipitate is formed with phosphate ions), coagulation is aided (the coagulation effect is improved and the floc growth is promoted), and heavy metals are removed (heavy metal ions are formed into hydroxide precipitates). When the polysilicone aluminum sulfate enters the polysilicone aluminum sulfate reaction tank 400, the polysilicone aluminum sulfate in the polysilicone aluminum sulfate reaction tank 400 can react with the liquid. During the reaction, there are charge neutralization (neutralizing the negative charge on the surface of the suspended matter and destabilizing it), adsorption bridging (adsorbing and connecting fine particles into large flocs), and netting and sweeping (the flocs formed by the reaction net and sweep the fine suspended matter in the water). When the water enters the inclined tube sedimentation tank 500, the sedimentation tank 500 separates the floc formed by coagulation from the clear water, forming supernatant and sludge. The sludge will be discharged periodically, and the supernatant will be discharged to the filter assembly 600 through the supernatant outlet 510. The filter assembly 600 filters the supernatant to make it meet the discharge standards. The supernatant that meets the standards can be reused as greywater (referring to the upstream process of this device) or directly discharged.
[0032] Among them, jet cavitation is achieved by jet cavitation; brush roller 110 is achieved by brush defoaming; lime slurry reaction tank 300, polysilicon aluminum sulfate reaction tank 400 and inclined tube sedimentation tank 500 are achieved by chemical coagulation and sedimentation; and filter assembly 600 is achieved by filtration. In other words, this device forms a combined process route of "jet cavitation + brush defoaming + chemical coagulation and sedimentation + filtration". Jet cavitation synergistic adsorption co-precipitation desalination: By modifying the lime milk lattice, the chelation for sulfate (SO4²⁻) is enhanced. - It has the ability to adsorb and co-precipitate calcium and magnesium ions, heavy metals and indigo dyes, and the removal rate of sulfate is >90%, which is much higher than that of traditional aluminum salts (40-50%). Polysilicic aluminum sulfate (PASS) has both charge neutralization and bridging effects, and has a significant effect on the removal of colloidal PVA slurry, with a 50% increase in shear resistance. Jet cavitation utilizes the local high temperature and pressure generated by the collapse of microbubbles to improve the dispersion of the reagent by 30%, shorten the reaction time by 40%, and simultaneously degrade some organic pollutants. It replaces the traditional coagulation + biological process, shortening the treatment cycle from 12 hours to less than 30 minutes, and realizes the reuse of different types of wastewater with a reuse rate of 60%-80%, which greatly reduces the cost of washing wastewater treatment and reclaimed water reuse.
[0033] Understandably, during or before the reaction, workers can add lime slurry from the top of the lime slurry reaction tank 300, and polyaluminum silicate sulfate from the top of the polyaluminum silicate reaction tank 400.
[0034] Furthermore, such as Figure 1 As shown, the system also includes a base 700, a jet cavitation reaction tank 100, a lime slurry reaction tank 300, a polysilicon aluminum sulfate reaction tank 400, and an inclined tube sedimentation tank 500, all of which are mounted on the base 700. This allows multiple structures to be fixed on the base 700, facilitating smooth lifting and transport of the entire system via forklift. This significantly reduces the difficulty of equipment transportation, handling costs, and the risk of damage during transport, enabling rapid cooperation with the owner for pilot-scale testing.
[0035] Furthermore, such as Figure 1 , 2 As shown, a dosing tank 800 is provided between the jet cavitation reaction tank 100 and the lime slurry reaction tank 300, and the jet cavitation reaction tank 100 is connected to the lime slurry reaction tank 300 through the dosing tank 800.
[0036] By setting up a dosing tank 800, chemicals can be added at any time during the reaction process; the dosing tank 800 can extend the reaction zone and ensure that the oxidation reaction is fully carried out.
[0037] Furthermore, such as Figure 1 As shown, the dosing tank 800 is located to the right of the jet cavitation reaction tank 100, the polysilicon aluminum sulfate reaction tank 400 is located behind the jet cavitation reaction tank 100, and the lime slurry reaction tank 300 is located to the right of the polysilicon aluminum sulfate reaction tank 400 and behind the dosing tank 800. like Figure 4 As shown, a first communication port 810 is provided between the bottom sidewall of the dosing tank 800 and the bottom sidewall of the jet cavitation reaction tank 100. A second communication port 820 is provided between the top side wall of the dosing tank 800 and the top side wall of the lime slurry reaction tank 300. A third communication port 310 is provided between the bottom sidewall of the lime slurry reaction tank 300 and the bottom sidewall of the polysilicate aluminum sulfate reaction tank 400. like Figure 1 As shown, a connecting pipe 410 connects the top of the polysilicone aluminum sulfate reaction tank 400 and the bottom of the inclined tube sedimentation tank 500.
[0038] The dosing tank 800 and the jet cavitation reaction tank 100 are directly connected through the first connecting port 810, the dosing tank 800 and the lime slurry reaction tank 300 are directly connected through the second connecting port 820, and the lime slurry reaction tank 300 and the polysilicon aluminum sulfate reaction tank 400 are directly connected through the third connecting port 310. All of these eliminate the need for pipes, thereby maximizing the use of excess space, optimizing space utilization, and ensuring a compact and reasonable layout. In addition, the connecting ports are located at the bottom and the top, which ensures the wastewater treatment effect.
[0039] Furthermore, such as Figure 1 , 7 As shown, the connection point between the connecting pipe 410 and the polysilicon aluminum sulfate reaction tank 400 is located on the left side wall of the polysilicon aluminum sulfate reaction tank 400, and the connection point between the connecting pipe 410 and the inclined tube sedimentation tank 500 is located on the left side wall of the inclined tube sedimentation tank 500, which facilitates the arrangement of the connecting pipe 410.
[0040] Furthermore, such as Figure 1 As shown, the jet cavitation reaction tank 100, lime slurry reaction tank 300, polysilicon aluminum sulfate reaction tank 400 and the tank to be added 800 are all installed on one side of the inclined tube sedimentation tank 500, making the structure integrated and compact.
[0041] Furthermore, such as Figure 5 As shown, the filter assembly 600 includes a security filter 610 and a first transfer pump 620. The inlet of the security filter 610 is connected to the supernatant outlet 510, and the inlet of the first transfer pump 620 is connected to the outlet of the security filter 610. The first transfer pump 620 can pump the supernatant to the security filter 610 for filtration. The security filter 610 performs precision filtration on the supernatant, intercepting the fine suspended solids and flocs remaining in the liquid. After filtration, the first transfer pump 620 pumps the liquid to the outside of the device for external discharge or reuse.
[0042] Furthermore, such as Figure 5 As shown, it also includes an intermediate water tank 900 and a second transfer pump 910. The inlet and outlet of the intermediate water tank 900 are connected to the supernatant outlet 510 and the inlet of the second transfer pump 910, respectively. The outlet of the second transfer pump 910 is connected to the inlet of the security filter 610.
[0043] By setting up an intermediate water tank 900 to store supernatant, the water quality and quantity are balanced, providing a stable inlet water for the subsequent filtration system and avoiding the impact of water fluctuations from the inclined tube sedimentation tank 500 on the filtration system.
[0044] Furthermore, such as Figure 2As shown, it also includes a lime slurry dosing tank 920 and a polysilicon aluminum sulfate dosing tank 930. The outlet of the lime slurry dosing tank 920 is connected to the lime slurry reaction tank 300 through a first conveying pipe 921. A third transfer pump 922 is provided on the first conveying pipe 921. The outlet of the polysilicon aluminum sulfate dosing tank 930 is connected to the polysilicon aluminum sulfate reaction tank 400 through a second conveying pipe 931. A fourth transfer pump 932 is provided on the second conveying pipe 931.
[0045] The dosage can be controlled by the installation of a third transfer pump 922 and a fourth transfer pump 932.
[0046] Furthermore, such as Figure 1 , 6 As shown, the water jet vacuum pump 220, lime slurry dosing tank 920, polysilicon aluminum sulfate dosing tank 930, ferrous sulfate dosing tank 230, and hydrogen peroxide dosing tank 240 are all mounted on the base 700, facilitating the lifting and movement of the device.
[0047] Specifically, the security filter 610, the first transfer pump 620, the intermediate water tank 900, and the second transfer pump 910 are all mounted on the base 700, which facilitates the lifting and movement of the device.
[0048] When this invention is working: The water jet vacuum pump 220 is started, and the water jet vacuum pump 220 circulates and draws the liquid in the jet cavitation reaction tank 100 to the ejector 210. The external water source also delivers wastewater to the ejector 210 under the action of the external pump. The ferrous sulfate dosing tank 230 and the hydrogen peroxide dosing tank 240 also deliver ferrous sulfate and hydrogen peroxide to the ejector 210 respectively. The wastewater, the liquid in the jet cavitation reaction tank 100, the ferrous sulfate and the hydrogen peroxide are mixed in the ejector 210. The ejector 210 sprays the mixed liquid at high speed, so that the liquid is sprayed downward from above the two brush rollers 110 and sprayed into the gap between the two brush rollers 110. After being buffered and defoamed by the brush rollers 110, the liquid falls into the jet cavitation reaction tank 100 below. The liquid in the jet cavitation reaction tank 100 enters the dosing tank 800 through the first connecting port 810. Then, the liquid in the dosing tank 800 enters the lime slurry reaction tank 300 through the second connecting port 820. Then, the liquid in the lime slurry reaction tank 300 enters the polysilicon aluminum sulfate reaction tank 400 through the third connecting port 310. Then, the liquid in the polysilicon aluminum sulfate reaction tank 400 enters the bottom of the inclined tube sedimentation tank 500 through the connecting pipe 410. Then, the liquid is settled in the inclined tube sedimentation tank 500. The first transfer pump 620 and the second transfer pump 910 are started. The supernatant enters the intermediate water tank 900 and the security filter 610 through the supernatant outlet 510 in sequence. Then, it is discharged or reused through the first transfer pump 620.
[0049] The wastewater treatment method according to a second aspect of the present invention includes the wastewater treatment apparatus of the first aspect embodiment; and further includes the following steps: S1, the water jet vacuum pump 220 is started. The water jet vacuum pump 220 circulates and draws the liquid in the jet cavitation reaction tank 100 to the ejector 210. The external water source also delivers wastewater to the ejector 210 under the action of the external pump. The ferrous sulfate dosing tank 230 and the hydrogen peroxide dosing tank 240 also deliver ferrous sulfate and hydrogen peroxide to the ejector 210 respectively. The wastewater, the liquid in the jet cavitation reaction tank 100, the ferrous sulfate and the hydrogen peroxide are mixed in the ejector 210. The ejector 210 sprays the mixed liquid at high speed, so that the liquid is sprayed downward from above the two brush rollers 110 and sprayed into the gap between the two brush rollers 110. After being buffered and defoamed by the brush rollers 110, the liquid falls into the jet cavitation reaction tank 100 below. S2, the liquid in the cavitation reaction tank 100 enters the lime slurry reaction tank 300, and the lime slurry in the lime slurry reaction tank 300 can react with the liquid; S3, the liquid in the lime milk reaction tank 300 enters the polysilicon aluminum sulfate reaction tank 400 through the third connecting port 310, and the polysilicon aluminum sulfate in the polysilicon aluminum sulfate reaction tank 400 can react with the liquid. S4, the liquid in the polysilicon aluminum sulfate reaction tank 400 enters the bottom of the inclined tube sedimentation tank 500 through the connecting pipe 410, and the inclined tube sedimentation tank 500 precipitates the liquid. S5, the supernatant in the inclined tube sedimentation tank 500 is discharged to the filter assembly 600 through the supernatant outlet 510, and the filter assembly 600 filters the supernatant.
[0050] The above-mentioned wastewater treatment methods can replace traditional coagulation sedimentation and biochemical degradation processes, greatly shortening the treatment cycle.
[0051] Furthermore, S2 also includes the liquid in the jet cavitation reaction tank 100 entering the dosing tank 800 through the first connecting port 810, and the liquid in the dosing tank 800 entering the lime slurry reaction tank 300 through the second connecting port 820.
[0052] The dosing tank 800 can be used to add different chemicals according to the actual working conditions, thereby improving the wastewater treatment effect.
[0053] Furthermore, S5 also includes the supernatant in the inclined tube sedimentation tank 500 entering the intermediate water tank 900, the second transfer pump 910, the security filter 610 and the first transfer pump 620 in sequence through the supernatant outlet 510. The security filter 610 performs precision filtration on the supernatant, and the first transfer pump 620 discharges or reuses the filtered liquid.
[0054] The intermediate water tank 900 can store supernatant, balance water quality and quantity, provide stable water inlet for the subsequent filtration system, and prevent the outflow fluctuations of the inclined tube sedimentation tank 500 from impacting the filtration system (pump, security filter 610).
[0055] Furthermore, S5 also includes reusing or directly discharging the water from the filtered supernatant to make full use of the filtered supernatant.
[0056] Furthermore, the liquids in the jet cavitation reaction tank 100, the liquids in the dosing tank 800, the liquids in the lime slurry reaction tank 300, and the liquids in the polysilicon aluminum sulfate reaction tank 400 are stirred to improve the reaction effect.
[0057] Furthermore, the inclined tube sedimentation tank 500 is regularly sludge removed and regularly cleaned.
[0058] Although the technical solutions of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these technical solutions without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A wastewater treatment device, characterized in that, include: A jet cavitation reaction tank (100) is provided, with two horizontally spaced brush rollers (110) installed at the top inside the jet cavitation reaction tank (100). The jet assembly (200) includes an ejector (210), a water jet vacuum pump (220), a ferrous sulfate dosing tank (230), and a hydrogen peroxide dosing tank (240). The inlet of the ejector (210) is connected to the outlet of the ferrous sulfate dosing tank (230), the hydrogen peroxide dosing tank (240), the water jet vacuum pump (220), and an external water source. The jet outlet of the ejector (210) is located above the two brush rollers (110) and faces the gap between the two brush rollers (110). The inlet of the water jet vacuum pump (220) is connected to the bottom of the jet cavitation reaction tank (100). The lime slurry reaction tank (300) is connected to the jet cavitation reaction tank (100); The polysilicate aluminum sulfate reaction tank (400) is connected to the lime slurry reaction tank (300); An inclined tube sedimentation tank (500) is connected to the polysilicon aluminum sulfate reaction tank (400), and the top of the inclined tube sedimentation tank (500) has a supernatant outlet (510). A filter assembly (600) for filtering the supernatant is connected to the supernatant outlet (510).
2. The wastewater treatment device according to claim 1, characterized in that: It also includes a base (700), on which the jet cavitation reaction tank (100), the lime slurry reaction tank (300), the polysilicon aluminum sulfate reaction tank (400) and the inclined tube sedimentation tank (500) are all mounted.
3. The wastewater treatment device according to claim 2, characterized in that: A dosing tank (800) is provided between the jet cavitation reaction tank (100) and the lime slurry reaction tank (300), and the jet cavitation reaction tank (100) is connected to the lime slurry reaction tank (300) through the dosing tank (800).
4. The wastewater treatment device according to claim 3, characterized in that: The dosing tank (800) is located to the right of the jet cavitation reaction tank (100), the polysilicon aluminum sulfate reaction tank (400) is located behind the jet cavitation reaction tank (100), and the lime slurry reaction tank (300) is located to the right of the polysilicon aluminum sulfate reaction tank (400) and behind the dosing tank (800). The bottom sidewall of the dosing tank (800) has a first communication port (810) between it and the bottom sidewall of the jet cavitation reaction tank (100). A second communication port (820) is provided between the top side wall of the dosing tank (800) and the top side wall of the lime slurry reaction tank (300). A third communication port (310) is provided between the bottom sidewall of the lime slurry reaction tank (300) and the bottom sidewall of the polysilicate aluminum sulfate reaction tank (400). A connecting pipe (410) is provided between the top of the polysilicon aluminum sulfate reaction tank (400) and the bottom of the inclined tube sedimentation tank (500).
5. The wastewater treatment device according to claim 4, characterized in that: The connection point between the connecting pipe (410) and the polysilicon aluminum sulfate reaction tank (400) is located on the left side wall of the polysilicon aluminum sulfate reaction tank (400), and the connection point between the connecting pipe (410) and the inclined tube sedimentation tank (500) is located on the left side wall of the inclined tube sedimentation tank (500).
6. The wastewater treatment apparatus according to any one of claims 3-5, characterized in that: The jet cavitation reaction tank (100), the lime slurry reaction tank (300), the polysilicon aluminum sulfate reaction tank (400), and the dosing tank (800) are all installed on one side of the inclined tube sedimentation tank (500).
7. The wastewater treatment device according to claim 1, characterized in that: The filter assembly (600) includes a security filter (610) and a first transfer pump (620). The inlet of the security filter (610) is connected to the supernatant outlet (510), and the inlet of the first transfer pump (620) is connected to the outlet of the security filter (610).
8. The wastewater treatment device according to claim 7, characterized in that: It also includes an intermediate water tank (900) and a second transfer pump (910), the inlet and outlet of the intermediate water tank (900) being connected to the supernatant outlet (510) and the inlet of the second transfer pump (910) respectively, and the outlet of the second transfer pump (910) being connected to the inlet of the security filter (610).
9. The wastewater treatment device according to claim 2, characterized in that: It also includes a lime slurry dosing tank (920) and a polysilicon aluminum sulfate dosing tank (930). The outlet of the lime slurry dosing tank (920) is connected to the lime slurry reaction tank (300) through a first conveying pipe (921). A third transfer pump (922) is provided on the first conveying pipe (921). The outlet of the polysilicon aluminum sulfate dosing tank (930) is connected to the polysilicon aluminum sulfate reaction tank (400) through a second conveying pipe (931). A fourth transfer pump (932) is provided on the second conveying pipe (931).
10. The wastewater treatment apparatus according to claim 9, characterized in that: The water jet vacuum pump (220), the lime slurry dosing tank (920), the polysilicon aluminum sulfate dosing tank (930), the ferrous sulfate dosing tank (230), and the hydrogen peroxide dosing tank (240) are all mounted on the base (700).