Printing and dyeing wastewater treatment device

Abstract

The utility model belongs to the technical field of wastewater treatment equipment, and particularly relates to a printing and dyeing wastewater treatment device which comprises a filtering mechanism and a degradation mechanism, the filtering mechanism comprises a frame body, an upper-layer filtering assembly and a lower-layer filtering assembly are arranged on the frame body, and the upper-layer filtering assembly comprises a magnetic field generating piece and a filtering space which are vertically stacked; the magnetic field generation part adopts an electrically controlled first filter screen, a second filter screen is attached to the inner wall of the filter space, a first stirring assembly is arranged at the bottom of the lower filter assembly, and an ozone generator, an ultraviolet lamp tube and a second stirring assembly are arranged in the degradation mechanism. The filtering mechanism and the degradation mechanism disclosed by the utility model can be efficiently and repeatedly used, are simple in structure, easy to maintain and low in operation cost, and can effectively remove heavy metal ions, suspended matters and refractory organic matters in wastewater to ensure that the final effluent is pure and can reach the recycling standard, so that the aims of energy conservation and emission reduction are fulfilled, and the economic benefit is increased. And sustainable development future is created for enterprises.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater treatment equipment, specifically relating to a dyeing and printing wastewater treatment device. Background Technology

[0002] With the booming development of my country's economy, the dyeing and printing industry, as one of the traditional industries, is also experiencing rapid growth. However, this growth is accompanied by a sharp increase in water consumption in dyeing and printing, leading to a continuous rise in total water pollution and causing increasingly serious impacts on the social environment. How to effectively conserve water and reduce water pollution while ensuring production efficiency has become a key issue that the dyeing and printing industry urgently needs to address.

[0003] To address this challenge, treating and reusing dyeing and printing wastewater is a highly effective solution. This method not only significantly reduces the total amount of wastewater discharged, alleviating pressure on natural water resources, but also substantially lowers water supply costs for businesses, bringing considerable economic and social benefits. Through wastewater treatment systems, companies can maximize resource utilization while also enhancing their corporate social responsibility image.

[0004] However, in existing technologies, most filtration devices are designed for single use and cannot be reused. This not only increases the investment cost of wastewater recycling equipment for enterprises but also limits their widespread application. More complexly, dyeing and printing wastewater often contains recalcitrant organic matter, which places higher demands on water quality. Existing filtration devices often fail to completely remove these pollutants, thus affecting the quality of the effluent. Therefore, developing a highly efficient and reusable filtration device to overcome the limitations of traditional filtration technologies is crucial for improving the treatment effect of dyeing and printing wastewater. An ideal wastewater treatment system should be simple in structure, easy to maintain, and have low operating costs. It should also effectively remove recalcitrant organic matter from the wastewater, ensuring that the final effluent meets reuse standards, thereby truly achieving the goals of energy conservation and emission reduction and creating a sustainable future for enterprises.

[0005] Therefore, this utility model is proposed. Utility Model Content

[0006] This utility model provides a dyeing and printing wastewater treatment device to solve the technical problems existing in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A wastewater treatment device for dyeing and printing includes a filtration mechanism and a degradation mechanism. The filtration mechanism includes a frame with an upper filtration assembly and a lower filtration assembly. The upper filtration assembly includes a magnetic field generator and a filtration space stacked vertically. The magnetic field generator includes an electrically controlled first filter screen. A second filter screen is attached to the inner wall of the filtration space. A first stirring assembly is located at the bottom of the lower filtration assembly. A connecting pipe is provided between the lower filtration assembly and the degradation mechanism. The degradation mechanism includes an ozone generator, an ultraviolet lamp, and a second stirring assembly. The ozone generator and the second stirring assembly are located at the bottom of the degradation mechanism, and the ultraviolet lamp is located at the top of the degradation mechanism.

[0009] The second filter screen has smaller pores than the first filter screen, and the second filter screen is used to filter non-metallic impurities in the dye solution.

[0010] The frame includes a first support frame and a second support frame. The first support frame is provided with a first telescopic component, which is used to separate the magnetic field generating component from the filtration space and to clean the magnetic mud separated from the filtration space. The second support frame is provided with a second telescopic component, which is used to separate the upper filtration assembly from the lower filtration assembly and to facilitate cleaning the inner wall of the lower filtration assembly.

[0011] A first liquid outlet pipe is provided between the filtration space and the lower filtration assembly, and a first valve is provided on the first liquid outlet pipe.

[0012] The first stirring assembly includes a first rotary motor, on which a first rotating rod is provided. The first rotating rod extends into the lower filter assembly, and an arc-shaped stirring element is provided on the first rotating rod. The arc-shaped stirring element is configured to cooperate with the inner wall of the lower filter assembly. That is, when the arc-shaped stirring element stirs the wastewater in the lower filter assembly, it can also clean the inner wall of the lower filter assembly and perform a self-cleaning operation.

[0013] The lower filter assembly is provided with an inlet pipe on one side, and a second valve is provided on the inlet pipe.

[0014] The connecting pipe is equipped with a third valve, a filter, and a tee pipe, and the tee pipe is equipped with a fourth valve.

[0015] The second stirring assembly includes a second rotary motor, on which a second rotating rod is provided. The second rotating rod extends into the degradation mechanism and is provided with an L-shaped stirring element.

[0016] The degradation mechanism is provided with a second liquid outlet pipe at the bottom, and a fifth valve is provided on the second liquid outlet pipe.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) This application pre-treats wastewater through an upper filtration component, using a magnetic field generator and introducing magnetic nanoparticles as flocculants to aggregate heavy metal ions in the dyeing wastewater to form magnetic mud, and then uses a second filter screen to filter non-metallic particulate impurities; then, a precipitant is introduced into the lower filtration component for further treatment, and the precipitant is stirred and reacted with the treated filtrate in the upper filtration component to separate the dye from the wastewater and increase the cleanliness of the wastewater; finally, the wastewater is deeply treated through an ozone generator, ultraviolet lamp tube and a second stirring component, that is, the wastewater is photocatalyzed and ozone oxidized to decompose the organic substances and some inorganic substances in the wastewater that are harmful to the human body;

[0019] (2) The filtration and degradation mechanisms disclosed in this application are highly efficient and reusable, with simple structure, easy maintenance and low operating costs. They can also effectively remove heavy metal ions, suspended solids and recalcitrant organic matter from wastewater, ensuring that the final effluent is pure and meets the reuse standards, thereby achieving the goal of energy conservation and emission reduction and creating a sustainable future for enterprises. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a dyeing and printing wastewater treatment device according to the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a dyeing and printing wastewater treatment device according to the present invention. Figure 2 ;

[0022] Figure 3 This is a partial structural diagram of a dyeing and printing wastewater treatment device according to the present invention. Figure 1 ;

[0023] Figure 4 This is a partial structural diagram of a dyeing and printing wastewater treatment device according to the present invention. Figure 2 ;

[0024] Figure 5 This is a partial structural diagram of a dyeing and printing wastewater treatment device according to the present invention. Figure 3 ;

[0025] Figure 6 This is a partial structural diagram of a dyeing and printing wastewater treatment device according to the present invention. Figure 4 ;

[0026] The components are labeled as follows: 1. Frame; 11. First support frame; 12. First telescopic component; 13. Second support frame; 14. Second telescopic component; 2. Upper filter assembly; 3. Lower filter assembly; 21. Magnetic field generator; 211. First filter screen; 22. Filter space; 23. Second filter screen; 31. First stirring assembly; 311. First rotary motor; 312. First rotating rod; 313. Arc-shaped stirring component; 32. Liquid inlet pipe; 33. Second valve; 4. Degradation mechanism; 41. Ozone generator; 42. Ultraviolet lamp; 43. Second stirring assembly; 431. Second rotary motor; 432. Second rotating rod; 433. L-shaped stirring component; 5. Connecting pipe; 51. Third valve; 52. Filter; 53. T-connector; 531. Fourth valve; 6. First outlet pipe; 61. First valve; 7. Second outlet pipe; 71. Fifth valve. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.

[0029] like Figures 1-6 As shown, a dyeing and printing wastewater treatment device includes a filtration mechanism and a degradation mechanism 4. The filtration mechanism includes a frame 1, on which an upper filtration assembly 2 and a lower filtration assembly 3 are mounted. The upper filtration assembly 2 includes a magnetic field generator 21 stacked on top of each other and a filtration space 22. The magnetic field generator 21 includes an electrically controlled first filter screen 211, and a second filter screen 23 is attached to the inner wall of the filtration space 22. Materials with high electrical conductivity and good electrochemical stability can be selected as the base material for the first filter screen 211, such as carbon-based materials (activated carbon fiber, graphene, etc.), metal oxides (such as TiO2, Fe2O3), or other conductive polymers, and then an electric wire is used to energize it.

[0030] The degradation mechanism 4 is equipped with an ozone generator 41, an ultraviolet lamp 42, and a second stirring component 43. The ozone generator 41 and the second stirring component 43 are located at the bottom of the degradation mechanism 4, while the ultraviolet lamp 42 is located at the top of the degradation mechanism 4. The ozone generator 41 and the second stirring component 43 are submerged in the wastewater, using ultraviolet light as the energy source for the chemical reaction. Combined with the stirring action of the second stirring component 43, the oxidation rate of ozone is accelerated (titanium dioxide can be added as a catalyst), thereby oxidizing and decomposing recalcitrant organic matter. The filter pores of the second filter screen 23 are smaller than those of the first filter screen 211, and the second filter screen 23 is used to filter non-metallic impurities in the dye solution.

[0031] The frame 1 includes a first support frame 11 and a second support frame 13. The first support frame 11 is provided with a first telescopic member 12, which is used to separate the magnetic field generator 21 and the filtration space 22 for cleaning the magnetic sludge separated from the first filter screen 211. The second support frame 13 is provided with a second telescopic member 14, which is used to separate the upper filter assembly 2 and the lower filter assembly 3 for easy cleaning of the inner wall of the lower filter assembly 3. A first liquid outlet pipe 6 is provided between the filtration space 22 and the lower filter assembly 3, and a first valve 61 is provided on the first liquid outlet pipe 6.

[0032] The lower filter assembly 3 has a first stirring assembly 31 at its bottom. The first stirring assembly 31 includes a first rotary motor 311, on which a first rotating rod 312 is mounted. The first rotating rod 312 extends into the lower filter assembly 3, and an arc-shaped stirring element 313 is mounted on the first rotating rod 312. The arc-shaped stirring element 313 is configured to cooperate with the inner wall of the lower filter assembly 3, meaning that while the arc-shaped stirring element 313 stirs the wastewater in the lower filter assembly 3, it can also clean the inner wall of the lower filter assembly 3, performing a self-cleaning operation. A liquid inlet pipe 32 is provided on one side of the lower filter assembly 3, and a second valve 33 is provided on the liquid inlet pipe 32 for introducing a precipitant or cleaning solution.

[0033] A connecting pipe 5 is provided between the lower filter assembly 3 and the degradation mechanism 4. The connecting pipe 5 is equipped with a third valve 51, a filter 52, and a three-way pipe 53. A fourth valve 531 is provided on the three-way pipe 53. By setting the filter 52, the dye precipitated in the lower filter assembly 3 can be filtered, and the filtrate enters the degradation mechanism 4. The dye is discharged and reused through the three-way pipe 53. In addition, cleaning fluid can be introduced into the lower filter assembly 3 through the inlet pipe 32 to clean the inner wall of the lower filter assembly 3 and then discharged through the three-way pipe 53.

[0034] The second stirring assembly 43 includes a second rotary motor 431, on which a second rotating rod 432 is mounted. The second rotating rod 432 extends into the degradation mechanism 4, and an L-shaped stirring element 433 is mounted on the second rotating rod 432. The L-shaped stirring element 433 is used to stir the wastewater, allowing the ultraviolet lamp 42 to fully irradiate the wastewater and accelerate the oxidation rate of ozone. The bottom of the degradation mechanism 4 is provided with a second outlet pipe 7, on which a fifth valve 71 is mounted to control the reuse of the treated dyeing and printing wastewater.

[0035] Specifically, first, close the first valve 61 on the first outlet pipe 6, then pour wastewater and an appropriate amount of magnetic nanoparticles into the upper filter assembly 2, and then energize the first filter screen 211. Use magnetic force to quickly gather and separate the magnetic nanoparticles that have bound the pollutants. At this time, the pollutants have formed magnetic mud. Then, use the first telescopic member 12 to lift the magnetic field generator 21, de-energize the first filter screen 211, and take out the magnetic mud. The magnetic nanoparticles can be separated by physical methods such as ultrafiltration or high-speed centrifugation, so that the magnetic nanoparticles can be reused.

[0036] Open the first valve 61 to allow the filtrate treated by the first filter screen 211 to pass through the second filter screen 23 for further filtration. The filtrate after two filtrations has essentially removed heavy metal ions and particulate impurities. After the filtrate falls from the upper filter assembly 2 to the lower filter assembly 3, open the second valve 33 on the inlet pipe 32 on one side of the lower filter assembly 3 to introduce a certain amount of precipitant (such as calcium chloride). This allows the dye to separate from the wastewater, removing impurities and unwanted color from the solution. Simultaneously, the action of the precipitant can be accelerated by the first stirring assembly 31.

[0037] After the wastewater is further treated in the lower filter assembly 3, the third valve 51 is opened and the fourth valve 531 is closed. The wastewater passes through the filter 52 (the filter 52 can be a fiber ball filter 52, a membrane filter 52, or an activated carbon filter 52, etc.) and enters the degradation mechanism 4. The ozone generator 41, the ultraviolet lamp 42 and the second stirring assembly 43 in the degradation mechanism 4 are used to oxidize and decompose the recalcitrant organic matter in the wastewater filtrate, ensuring that the final effluent is pure and meets the reuse standard.

[0038] It should be noted that the dye precipitated in the lower filter assembly 3 can be discharged through the three-way pipe 53. Alternatively, cleaning solution can be introduced through the liquid inlet pipe 32, and the inner wall of the lower filter assembly 3 can be cleaned by the first stirring assembly 31, and then the cleaning solution can be discharged through the three-way pipe 53. The upper filter assembly 2 and the lower filter assembly 3 can also be separated by the second telescopic component 14, which makes it easier for staff to clean the lower filter assembly 3.

[0039] This application pre-treats wastewater through an upper filter assembly 2, using a magnetic field generator 21 and introduced magnetic nanoparticles as flocculants to aggregate heavy metal ions in the dyeing wastewater into magnetic sludge. Then, a second filter 23 filters out non-metallic particulate impurities. Next, a precipitant is introduced into the lower filter assembly 3 for further treatment. The precipitant is stirred and reacted with the treated filtrate from the upper filter assembly 2 to separate the dye from the wastewater, increasing its cleanliness. Finally, the wastewater undergoes deep treatment via an ozone generator 41, an ultraviolet lamp 42, and a second stirring assembly 43, namely, photocatalytic and ozone oxidation treatment, to decompose harmful organic and some inorganic substances in the wastewater.

[0040] The filtration and degradation mechanisms 4 disclosed in this application are highly efficient and reusable, with simple structures, easy maintenance, and low operating costs. They can also effectively remove heavy metal ions, suspended solids, and recalcitrant organic matter from wastewater, ensuring that the final effluent is pure and meets reuse standards, thereby achieving the goal of energy conservation and emission reduction and creating a sustainable future for enterprises.

[0041] The above content is a further detailed description of the technical solution provided in conjunction with the preferred embodiments of this patent. It should not be considered that the specific implementation of this utility model is limited to the above description. For those skilled in the art to which this patent pertains, several simple deductions or substitutions can be made without departing from the concept of this patent, and all of these should be considered to fall within the protection scope of this patent.

Claims

1. A dyeing and printing wastewater treatment device, characterized in that: The device includes a filtration mechanism and a degradation mechanism. The filtration mechanism includes a frame with an upper filtration assembly and a lower filtration assembly. The upper filtration assembly includes a magnetic field generator and a filtration space stacked on top of each other. The magnetic field generator includes an electrically controlled first filter screen. A second filter screen is attached to the inner wall of the filtration space. A first stirring assembly is located at the bottom of the lower filtration assembly. A connecting pipe is provided between the lower filtration assembly and the degradation mechanism. The degradation mechanism includes an ozone generator, an ultraviolet lamp, and a second stirring assembly. The ozone generator and the second stirring assembly are located at the bottom of the degradation mechanism, and the ultraviolet lamp is located at the top of the degradation mechanism.

2. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The pores of the second filter screen are smaller than those of the first filter screen.

3. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The frame includes a first support frame and a second support frame. The first support frame is provided with a first telescopic member, which is used to separate the magnetic field generator and the filtration space. The second support frame is provided with a second telescopic member, which is used to separate the upper filtration assembly and the lower filtration assembly.

4. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: A first liquid outlet pipe is provided between the filtration space and the lower filtration assembly, and a first valve is provided on the first liquid outlet pipe.

5. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The first stirring assembly includes a first rotary motor, on which a first rotating rod is provided. The first rotating rod extends into the lower filter assembly, and an arc-shaped stirring element is provided on the first rotating rod. The arc-shaped stirring element is configured to cooperate with the inner wall of the lower filter assembly.

6. A dyeing and printing wastewater treatment device as described in claim 1 or 5, characterized in that: The lower filter assembly is provided with an inlet pipe on one side, and a second valve is provided on the inlet pipe.

7. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The connecting pipe is equipped with a third valve, a filter, and a tee pipe, and the tee pipe is equipped with a fourth valve.

8. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The second stirring assembly includes a second rotary motor, on which a second rotating rod is provided. The second rotating rod extends into the degradation mechanism and is provided with an L-shaped stirring element.

9. The dyeing and printing wastewater treatment device as described in claim 1, characterized in that: The degradation mechanism is provided with a second liquid outlet pipe at the bottom, and a fifth valve is provided on the second liquid outlet pipe.

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