Wastewater filtering device for preparing ammonium metavanadate

Abstract

The utility model discloses a waste water filtering device for preparing ammonium metavanadate, which comprises a waste water rough filtering assembly, a waste water adjusting assembly, a multi-stage filtering assembly and an adsorption purification assembly, and multi-layer and multi-stage filtering is carried out through the waste water rough filtering assembly, the waste water adjusting assembly, the multi-stage filtering assembly and the adsorption purification assembly. Firstly, large-particle suspended solids in the ammonium metavanadate wastewater are coarsely filtered and removed through the wastewater coarse filtering assembly, an acid-base regulator is added into the wastewater adjusting assembly to adjust the PH value of the wastewater so as to prevent the wastewater from containing over-acidic or over-alkaline substances, and then fine suspended solids and colloidal substances in the wastewater are removed step by step through the multi-stage filtering assembly. Meanwhile, particulate matters generated by the regulation of an acid-base regulator in the previous stage can be removed, and organic pollutants and heavy metal ions are removed by the adsorption purification assembly, so that multi-layer filtration is realized, some tiny particle impurities and dissolved impurities in the wastewater are effectively removed, and the filtered water cannot cause pollution to the environment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater filtration technology, and in particular to a wastewater filtration device for the preparation of ammonium metavanadate. Background Technology

[0002] In the production of ammonium metavanadate, the wastewater has a complex composition, containing vanadate (V5+), ammonia nitrogen (NH3-N), suspended solids, and small amounts of organic matter. Direct discharge of this wastewater without effective treatment will not only cause environmental pollution but also lead to resource waste. Currently used wastewater filtration devices have several problems in treating wastewater from ammonium metavanadate production. For example, traditional filtration devices typically use sedimentation to settle particulate matter in the wastewater, followed by simple coarse and fine filtration. However, such devices often only perform simple solid-liquid separation and are ineffective at removing small particulate impurities and dissolved impurities. Furthermore, they have low removal efficiency for heavy metal ions (such as vanadium), resulting in filtered water that fails to meet discharge or reuse standards. Therefore, developing a highly efficient and reliable wastewater filtration device is of great significance for wastewater treatment in the ammonium metavanadate production process. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a wastewater filtration device for the preparation of ammonium metavanadate, which aims to solve the problem that traditional filtration devices can only perform simple solid-liquid separation, and have low removal efficiency for some small particulate impurities and dissolved impurities in wastewater, as well as heavy metal ions (such as vanadium), resulting in environmental pollution of the filtered water.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wastewater filtration device for the preparation of ammonium metavanadate includes a wastewater coarse filtration component, a wastewater conditioning component, a multi-stage filtration component, an adsorption purification component, a wastewater recovery component, and a controller. The wastewater coarse filtration component, the wastewater conditioning component, and the multi-stage filtration component are connected in sequence via valves. The adsorption purification component is connected to the multi-stage filtration component and the wastewater recovery component via pipelines. The controller is electrically connected to the valves.

[0006] Furthermore, the wastewater coarse filtration component is a coarse filter with a filter screen pore size of 500μm.

[0007] Furthermore, the wastewater regulating component is connected to the wastewater coarse filter component through a primary valve, and an inlet is provided at the upper end of the wastewater regulating component. A level valve is provided at the inlet, and a level sensor is provided inside the wastewater regulating component. The distance between the level sensor and the primary valve is one-third of the height of the wastewater regulating component. Both the primary valve and the level sensor are electrically connected to the controller.

[0008] Furthermore, the wastewater regulating component is also equipped with an upper sensor and a lower sensor. The upper sensor is located at the inlet end of the wastewater regulating component, and the lower sensor is located at the outlet end of the wastewater regulating component. Both the upper and lower sensors are electrically connected to the controller.

[0009] Furthermore, the multi-stage filtration assembly is connected to the wastewater regulating assembly via a secondary valve. The multi-stage filtration assembly includes a primary filter, a secondary filter, and a precision filter. The primary filter, secondary filter, and precision filter are connected sequentially along the outlet direction of the secondary valve. The primary filter element has a pore size of 50-100 micrometers, the secondary filter element has a pore size of 0.5 to 1.2 millimeters, and the precision filter element has a pore size of less than or equal to 5 micrometers.

[0010] Furthermore, the adsorption and purification component is filled with granular activated carbon and ion exchange resin.

[0011] Furthermore, the wastewater recycling component includes a clear water tank, which is a sealed structure and has an inlet and an outlet valve, with a pipeline connected to the inlet.

[0012] The technical solution adopted in this utility model has the following beneficial effects:

[0013] In this application, multi-level filtration is achieved by setting up a wastewater coarse filtration component, a wastewater conditioning component, a multi-stage filtration component, and an adsorption purification component. First, the wastewater coarse filtration component removes large particulate suspended solids from the ammonium metavanadate wastewater. Then, the wastewater conditioning component adds an acid-base regulator to adjust the pH value of the wastewater to prevent excessive acidity or alkalinity. Next, the multi-stage filtration component removes fine suspended solids and colloidal substances from the wastewater step by step, while also removing particulate matter generated by the acid-base regulator in the previous stage. Finally, the adsorption purification component removes organic pollutants and heavy metal ions, achieving multi-level filtration. Activated carbon adsorbs COD and some heavy metals; the chelating resin in the ion exchange resin selectively adsorbs V5+ (adsorption rate >95%), which can effectively filter and adsorb some small particulate impurities, dissolved impurities, and heavy metal ions in the wastewater, ensuring that the filtered water does not pollute the environment and improving filtration efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a wastewater filtration device for the preparation of ammonium metavanadate provided by this utility model;

[0015] Figure 2 A schematic diagram of the control circuit for a wastewater filtration device used in the preparation of ammonium metavanadate, provided by this utility model.

[0016] 1. Wastewater coarse filtration assembly; 2. Wastewater conditioning assembly; 3. Multi-stage filtration assembly; 4. Adsorption purification assembly; 5. Clear water tank; 6. Controller; 7. Liquid inlet; 8. Primary filter; 9. Intermediate filter; 10. Precision filter; 11. Primary valve; 12. Liquid level valve; 13. Secondary valve; 14. Upper sensor; 15. Liquid level sensor; 16. Lower sensor; 17. Water inlet; 18. Water outlet valve. Detailed Implementation

[0017] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] A wastewater filtration device for the preparation of ammonium metavanadate, such as Figure 1 As shown, the system includes a wastewater coarse filtration component 1, a wastewater conditioning component 2, a multi-stage filtration component 3, an adsorption purification component 4, a wastewater recovery component, and a controller 6. The wastewater coarse filtration component 1, the wastewater conditioning component 2, and the multi-stage filtration component 3 are connected in sequence through valves. The adsorption purification component 4 is connected to the multi-stage filtration component 3 and the wastewater recovery component through pipelines. The controller 6 is electrically connected to the valves.

[0019] In this application, multi-level filtration is achieved by setting up a wastewater coarse filtration component, a wastewater conditioning component, a multi-stage filtration component, and an adsorption purification component. First, the wastewater coarse filtration component removes large particulate suspended solids from the ammonium metavanadate wastewater. Then, the wastewater conditioning component adds an acid-base regulator to adjust the pH value of the wastewater to prevent excessive acidity or alkalinity. Next, the multi-stage filtration component removes fine suspended solids and colloidal substances from the wastewater step by step, while also removing particulate matter generated by the acid-base regulator in the previous stage. Finally, the adsorption purification component removes organic pollutants and heavy metal ions, achieving multi-level filtration. Activated carbon adsorbs COD and some heavy metals; the chelating resin in the ion exchange resin selectively adsorbs V5+ (adsorption rate >95%), which can effectively filter and adsorb some small particulate impurities, dissolved impurities, and heavy metal ions in the wastewater, ensuring that the filtered water does not pollute the environment and improving filtration efficiency.

[0020] In this embodiment, the wastewater coarse filtration component 1 is a coarse filter. The filter screen of the coarse filter adopts ceramic membrane ultrafiltration (500μm pore size), which can specifically remove large particulate suspended solids in wastewater.

[0021] In this embodiment, as Figure 1As shown, the wastewater regulating component 2 is connected to the wastewater coarse filter component 1 through the primary valve 11, and an inlet 7 is provided at the upper end of the wastewater regulating component 2. A level valve 12 is provided at the inlet 7. A level sensor 15 is provided inside the wastewater regulating component 2. The distance between the level sensor 15 and the primary valve 11 is one-third of the height of the wastewater regulating component 2. Both the primary valve 11 and the level sensor 15 are electrically connected to the controller 6.

[0022] The wastewater regulating component 2 is also equipped with an upper sensor 14 and a lower sensor 16. The upper sensor 14 is located at the inlet end of the wastewater regulating component 2, and the lower sensor 16 is located at the outlet end of the wastewater regulating component 2. Both the upper sensor 14 and the lower sensor 16 are electrically connected to the controller 6.

[0023] The upper sensor 14, lower sensor 16 and liquid level sensor 15 mentioned above are all capacitive sensors commonly used in the prior art. They can achieve non-contact measurement, can penetrate 1-15mm non-metallic containers, have an accuracy of 0.05pF, are suitable for corrosive liquids, and can prevent corrosion by wastewater during long-term use.

[0024] In this embodiment, the multi-stage filtration assembly 3 is connected to the wastewater regulating assembly 2 via a secondary valve 13. The multi-stage filtration assembly 3 includes a primary filter 8, a secondary filter 9, and a precision filter 10. The primary filter 8, secondary filter 9, and precision filter 10 are connected sequentially along the water outlet direction of the secondary valve 13. The primary filter 8 uses a stainless steel screen with a pore size of 50 to 100 micrometers, the secondary filter 9 is filled with quartz sand filter media with a particle size of 0.5 to 1.2 millimeters, and the precision filter 10 uses a PP melt-blown filter element with a pore size of less than or equal to 5 micrometers. Through the above three-stage filtration, particulate matter of different sizes produced during the preparation of ammonium metavanadate can be effectively removed, thereby improving the efficiency of wastewater treatment.

[0025] The multi-stage filtration component of this application is mainly based on three-stage filtration. It can remove fine suspended solids and colloidal substances step by step for the wastewater generated in the preparation process of ammonium metavanadate, avoiding residues that could pollute and damage the environment.

[0026] In this embodiment, the adsorption purification component 4 is filled with granular activated carbon and ion exchange resin. The former adsorbs and removes organic pollutants, while the latter adsorbs and removes heavy metal ions.

[0027] In this embodiment, the wastewater recycling component includes a clear water tank 5, which is a sealed structure and has an inlet 17 and an outlet valve 18. A pipeline is connected to the inlet 17. In the specific recycling process, the wastewater is first stored in the clear water tank 5, and the water quality can be tested to determine whether it meets the standards and to decide on the discharge.

[0028] Furthermore, all valves in this application are electric valves, which can be remotely controlled in conjunction with controller 6. Also, refer to... Figure 1 and Figure 2 The upper sensor 14, lower sensor 16, and liquid level sensor 15 are all electrically connected to the controller 6. Initially, the secondary valve 13 of the wastewater regulating component 2 is closed, and the primary valve 11 is open. When the wastewater in the wastewater regulating component 2 reaches the liquid level sensor 15, the controller 6 controls the liquid level valve 12 at the inlet 7 to automatically open, and begins to inject pH adjusting reagent into the wastewater regulating component 2. When the liquid in the wastewater regulating component 2 reaches the upper sensor 14, the controller 6 controls the liquid level valve 12 at the inlet 7 to automatically close. After waiting for a certain period of time, the controller 6 controls the secondary valve 13 of the wastewater regulating component 2 to automatically open. When the liquid in the wastewater regulating component 2 reaches the lower sensor 16, the secondary valve 13 of the wastewater regulating component 2 automatically closes, and the primary valve 11 automatically opens. This cycle repeats automatically, realizing automated control of wastewater filtration, allowing operators to remotely operate the filtration operation and improving operational safety.

[0029] Among them, controller 6 adopts Siemens SIMATIC S7-1200 PLC controller, which belongs to the SIMATIC S7-1200 series of Siemens in Germany. It can combine multiple sensor signals to automatically control valves and is suitable for wastewater treatment and other operating systems, so as to better realize the automation of wastewater filtration.

[0030] This utility model provides a wastewater filtration device for preparing ammonium metavanadate. It has a simple structure, is easy to operate, and has high filtration efficiency. It can effectively remove suspended solids, heavy metals, ions and other harmful substances from wastewater, ensuring that the filtered wastewater meets the discharge standards or reuse requirements. It has broad application prospects.

[0031] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A waste water filtering device for ammonium metavanadate preparation, characterized by, The wastewater treatment device comprises a wastewater coarse filter assembly (1), a wastewater adjusting assembly (2), a multi-stage filter assembly (3), an adsorption and purification assembly (4), a wastewater recovery assembly and a controller (6).

2. The waste water filtering device for ammonium metavanadate preparation as claimed in claim 1 wherein, The wastewater coarse filter assembly (1) is a coarse filter, and the filter screen aperture of the coarse filter is 500 microns.

3. The waste water filtering device for ammonium metavanadate preparation as claimed in claim 1 wherein, The wastewater adjusting assembly (2) is connected with the wastewater coarse filter assembly (1) through a primary valve (11), and a liquid inlet (7) is arranged at the upper end of the wastewater adjusting assembly (2), and a liquid level valve (12) is arranged at the liquid inlet (7).

4. The apparatus for filtering waste water for ammonium metavanadate preparation as claimed in claim 1 wherein, The wastewater adjusting assembly (2) is further provided with an upper sensor (14) and a lower sensor (16), the upper sensor (14) is arranged at the liquid inlet end of the wastewater adjusting assembly (2), the lower sensor (16) is arranged at the liquid outlet end of the wastewater adjusting assembly (2), and the upper sensor (14) and the lower sensor (16) are electrically connected with the controller (6).

5. The apparatus for filtering waste water for ammonium metavanadate preparation as claimed in claim 1 wherein, The multi-stage filter assembly (3) is connected with the wastewater adjusting assembly (2) through a secondary valve (13), and the multi-stage filter assembly (3) comprises a primary filter (8), an intermediate filter (9) and a precision filter (10), the primary filter (8), the intermediate filter (9) and the precision filter (10) are connected in sequence along the water outlet direction of the secondary valve (13), the filter core aperture of the primary filter (8) is 50-100 microns, the filter core aperture of the intermediate filter (9) is 0.5-1.2 millimeters, and the filter core aperture of the precision filter (10) is less than or equal to 5 microns.

6. The apparatus for filtering waste water for ammonium metavanadate preparation as claimed in claim 1 wherein, The adsorption and purification assembly (4) is filled with granular activated carbon and ion exchange resin.

7. The apparatus for filtering waste water for ammonium metavanadate preparation as claimed in claim 1 wherein, The wastewater recovery assembly comprises a clean water tank (5), the clean water tank (5) is a sealed structure, and a water inlet (17) and a water outlet valve (18) are arranged on the clean water tank (5), and a pipeline is connected to the water inlet (17).

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