CN221740113U - Rare earth wastewater treatment device - Google Patents

Abstract

The utility model discloses a rare earth wastewater treatment device, which belongs to the technical field of wastewater treatment devices, and comprises a shell, a plurality of sedimentation boxes are arranged in communication with the outside of the shell, an opening is arranged on the top of the shell, an upper cover is rotatably arranged at the opening, a filter screen is movably arranged at the bottom of the upper cover, an inner pipe opening of the water inlet pipe faces one side of the filter screen, two water filter layers are arranged in sequence at the bottom of the filter screen, a stirring roller is arranged at the bottom of the shell, the stirring roller comprises a rotating shaft and a stirring paddle, the stirring paddle is provided with transverse and longitudinal blades, a reagent mixing box is arranged on the outer wall of the shell, the reagent mixing box can mix an organic phase and an extractant, the reagent mixing box is arranged in communication with the shell through a water pipe, the sedimentation box is used for sedimentation and stratification of wastewater and organic phase, and an observation window is arranged on the outer wall of the sedimentation box, so that the phase separation can be observed. After the wastewater is firstly subjected to triple filtration, it is strongly stirred with the extractant and the organic phase, and is respectively transported to the sedimentation box for sedimentation, and the organic phase and water are separated after sedimentation and stratification.

Description

A rare earth wastewater treatment device

Technical Field

The utility model relates to the technical field of wastewater treatment devices, in particular to a rare earth wastewater treatment device.

Background Art

During the production of rare earths, wastewater containing rare earths and other heavy metal pollutants is generated due to various process operations and equipment failures. If these wastewaters are discharged directly without treatment, they will cause serious pollution to the environment and affect the ecological environment and human health. Therefore, the treatment and management of rare earth production wastewater is a very important environmental protection issue in the rare earth production process. At present, the treatment of rare earth production wastewater mainly adopts chemical precipitation, ion exchange, extraction and other technologies. Among them, extraction is the most widely used treatment technology, which can effectively remove rare earths and other heavy metal pollutants in wastewater, so that the wastewater meets the discharge standards or is reused.

The extraction method includes pretreatment of wastewater, mixing of extraction reagent and organic phase, adding wastewater together and stirring, standing and settling for a period of time to allow the organic phase and wastewater to separate into layers, and finally separating the organic phase and wastewater into layers.

In existing wastewater treatment devices, the filter box and the sedimentation box are often integrated, filtering first and then sedimentation, and the sedimentation time is often longer than the filtration time, resulting in the second filtration being completed before the sedimentation box is vacated, affecting the treatment efficiency. In addition, the wastewater is not pre-treated to filter out some impurities first, but the extraction agent is directly added, which affects the extraction effect.

Utility Model Content

In order to solve the technical problems that the filter box and the sedimentation box are often integrated, filtering first and then sedimentation, and the sedimentation time is often longer than the filtering time, resulting in the second filtering being completed and the sedimentation box not being vacant, which affects the treatment efficiency. In addition, the wastewater is not pre-treated to filter out some impurities first, but the extraction agent is directly added, which affects the extraction effect, the utility model provides a rare earth wastewater treatment device.

A rare earth wastewater treatment device comprises a shell, a plurality of sedimentation boxes are arranged on the outer side of the shell, an opening is arranged on the top of the shell, an upper cover is rotatably arranged at the opening, a filter screen is movably arranged on the bottom of the upper cover, an inner pipe opening of a water inlet pipe faces one side of the filter screen, two water filter layers are arranged in sequence on the bottom of the filter screen, a stirring roller is arranged at the bottom of the shell, the stirring roller comprises a rotating shaft and a stirring paddle, the stirring paddle is provided with transverse and longitudinal blades, a chemical mixing box is arranged on the outer wall of the shell, the chemical mixing box can mix an organic phase and an extractant, the chemical mixing box is arranged in communication with the shell through a water pipe, the sedimentation box is used for sedimentation and stratification of wastewater and organic phase, and an observation window is arranged on the outer wall of the sedimentation box to observe the phase separation.

Preferably, the upper cover is rotatably connected to the shell by a hinge, a waterproof sealing ring is provided at the bottom of the upper cover, and a support frame is fixedly provided on the side wall of the shell below the upper cover. The support frame includes a bottom plate fixedly provided on the side wall of the shell, and U-shaped clamping blocks are provided at both ends of the bottom plate. The filter screen can move up and down inside the U-shaped clamping block, and the top of the filter screen is tightly attached to the bottom wall of the upper cover after the cover is closed, so as to filter larger impurities in the wastewater.

Preferably, the water inlet pipe passes through the side wall of the shell and is arranged on the outside of the filter screen. The double water filtration layers include a quartz sand filtration layer and an activated carbon filtration layer arranged from top to bottom, which are used to filter smaller impurities in the wastewater. A drive motor is arranged at the bottom of the shell through a mounting frame.

Preferably, the stirring roller is arranged below the activated carbon filter layer, the rotating shaft passes through the bottom wall of the shell and is arranged at the output end of the driving motor, the stirring paddle is fixedly arranged on the outer wall of the rotating shaft, and the paddles arranged horizontally and vertically can enhance the overall stirring effect.

Preferably, the medicine mixing box is arranged on the top wall of the shell, and a manual stirring roller is rotatably arranged inside. The manual stirring roller passes through the side wall of the medicine mixing box and is provided with a handle. The top of the medicine mixing box and the sedimentation box are both provided with a feed port with a cover.

Preferably, a water pipe and four downwardly inclined delivery pipes are respectively arranged through the side wall of the shell below the activated carbon filter layer, a water pump is arranged on the water pipe, and valves are arranged inside the delivery pipe and at the discharge port arranged at the bottom of the sedimentation tank.

Preferably, the number of sedimentation boxes is preferably 4, which are respectively arranged around the shell, and the bottom of which is a conical structure. The discharge port is arranged through the bottom of the cone, and the observation window is a vertical square. The material is preferably tempered glass, and the shell and the bottom wall of the sedimentation box are provided with a number of support columns.

Compared with the prior art, the utility model has the following beneficial effects: the wastewater is first filtered through a triple filter screen, a quartz sand filter layer and an activated carbon filter layer to filter out most of the impurities; the extractant and the organic phase are first preliminarily stirred and mixed in a reagent mixing box, and then added to the filtered wastewater, and stirred vigorously for a second time to fully mix the reagent and the wastewater, and then transported to a sedimentation box for sedimentation respectively; after sedimentation and stratification, the organic phase and water are separated; the sedimentation does not affect the filtering step, so that the wastewater treatment efficiency is high, and the installation and replacement of the filter screen are relatively convenient and quick.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic front view of the structure of the utility model;

Figure 2 is a schematic top view of the structure of the utility model;

FIG. 3 is a schematic diagram of the housing 1 of the present invention.

In the figure: 1. Shell; 2. Sedimentation box; 3. Upper cover; 4. Filter screen; 5. Water inlet pipe; 6. Stirring roller; 7. Rotating shaft; 8. Stirring paddle; 9. Chemical mixing box; 10. Water pipe; 11. Observation window; 12. Support frame; 13. Bottom plate; 14. U-shaped clamping block; 15. Quartz sand filter layer; 16. Activated carbon filter layer; 17. Driving motor; 18. Paddle; 19. Manual stirring roller; 20. Handle; 21. Feed inlet; 22. Delivery pipe; 23. Water pump; 24. Valve; 25. Discharge port; 26. Support column.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have specific positions, or to be constructed and operated in specific positions.

In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to the specific circumstances. In addition, the term "plurality" should mean two or more.

It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings Figures 1 to 3 in combination with the embodiments.

A rare earth wastewater treatment device comprises a shell 1, four downwardly inclined delivery pipes 22 are arranged through the side wall of the shell 1, and the other ends of the delivery pipes 22 are connected to four sedimentation boxes 2, which are arranged around the shell 1 respectively. The bottom of the sedimentation box 2 is a conical structure, and valves 24 are arranged inside the delivery pipe 22 and at a discharge port 25 arranged at the bottom of the sedimentation box 2. After the wastewater is filtered and stirred inside the shell 1, it is left to settle for a period of time inside the four sedimentation boxes 2, and after the organic phase and the water are separated, it is discharged in layers through the discharge port 25 that penetrates the bottom of the cone.

An opening is provided at the top of the shell 1, and an upper cover 3 is rotatably provided at the opening. The upper cover 3 is rotatably connected to the shell 1 through a hinge. A waterproof sealing ring is provided at the bottom of the upper cover 3. A filter screen 4 is movably provided at the bottom of the upper cover 3. A support frame 12 is fixedly provided on the side wall of the shell 1 below the upper cover 3. The support frame 12 includes a bottom plate 13 fixedly provided on the side wall of the shell 1, which is used to place the bottom of the filter screen 4. U-shaped clamping blocks 14 are provided at both ends of the bottom plate 13, which can clamp and fix the two ends of the filter screen 4.

The filter screen 4 can move up and down inside the U-shaped clamping block 14, and the top of the filter screen 4 is in close contact with the bottom wall of the upper cover 3 after closing, so as to prevent the wastewater from impacting the filter screen 4 and causing it to move and fall off. The filter screen 4 has a filtering effect on large impurities in the wastewater. In order to avoid clogging, the filter screen 4 needs to be cleaned or replaced regularly. When in use, open the upper cover 3, and directly move the filter screen 4 upward to pull it out, which is simple and fast.

The water inlet pipe 5 penetrates the side wall of the housing 1 and is arranged outside the filter screen 4. The inner pipe opening of the water inlet pipe 5 faces one side of the filter screen 4. Wastewater flows from the outer pipe opening of the water inlet pipe 5 to the inner pipe opening, and flows downward after being filtered by the filter screen 4. Since two water filter layers are sequentially arranged at the bottom of the filter screen 4, the two water filter layers include a quartz sand filter layer 15 and an activated carbon filter layer 16 sequentially arranged from top to bottom, small impurities in the wastewater can be removed after filtering and adsorption by the two water filter layers.

A reagent mixing box 9 is arranged on the top wall of the shell 1. The reagent mixing box 9 can mix the organic phase and the extractant. The reagent mixing box 9 is connected to the shell 1 through a water pipe 10. The lower end of the water pipe 10 passes through the side wall of the shell 1 and below the activated carbon filter layer 16. A water pump 23 is arranged on the water pipe 10. The upper end of the water pipe 10 passes through the side wall of the reagent mixing box 9. A manual stirring roller 19 is rotatably arranged inside. The manual stirring roller 19 passes through the side wall of the reagent mixing box 9 and is provided with a handle 20. A feed port 21 with a cover is arranged on the top of the reagent mixing box 9 and the sedimentation box 2.

The organic phase and the extractant are added to the reagent mixing box 9 through the feed port 21 , the handle 20 is held and the manual stirring stick 19 is shaken to preliminarily mix the organic phase and the extractant, and then the water pump 23 is started to pump the mixed reagent from the reagent mixing box 9 to the bottom of the shell 1 .

The mixed liquid of the wastewater and the organic phase extractant after most of the impurities are removed is gathered together at the bottom of the shell 1. Since the bottom of the shell 1 is provided with a driving motor 17 through a mounting frame, a stirring roller 6 is provided at the bottom of the shell 1. The stirring roller 6 is arranged below the activated carbon filter layer 16. The stirring roller 6 includes a rotating shaft 7 and a stirring paddle 8. The rotating shaft 7 passes through the bottom wall of the shell 1 and is arranged at the output end of the driving motor 17. The stirring paddle 8 is fixedly arranged on the outer wall of the rotating shaft 7. The stirring paddle 8 is provided with transverse and longitudinal blades 18. The transverse and longitudinal blades 18 can enhance the overall stirring effect.

The driving motor 17 is started to drive the rotating shaft 7 and the stirring paddle 8 to rotate, and the internal mixed liquid is strongly mixed and stirred. Under the stirring action of the horizontally and vertically arranged paddles 18, the wastewater, the organic phase and the extractant are fully mixed.

The sedimentation tank 2 is used for sedimentation and stratification of wastewater and organic phase. The outer wall of the sedimentation tank 2 is provided with an observation window 11, through which the phase separation can be observed. The observation window 11 is a vertical square, and the material is preferably tempered glass. The shell 1 and the bottom wall of the sedimentation tank 2 are both provided with a plurality of support columns 26.

Open valve 24 to allow the fully mixed liquid to enter the sedimentation box 2. After settling for a period of time, the stratification of water and organic phases can be observed from outside the observation window 11. When the stratification is clear, open valve 24 to allow the lower layer of water and the upper layer of organic phase to be discharged from the discharge port 25 in turn to achieve separation.

The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (7)

1. A rare earth wastewater treatment device, comprising a housing (1), a plurality of sedimentation boxes (2) are arranged on the outside of the housing (1), and the housing (1) is characterized in that: an opening is arranged on the top of the housing (1), an upper cover (3) is rotatably arranged at the opening, a filter screen (4) is movably arranged on the bottom of the upper cover (3), an inner pipe opening of a water inlet pipe (5) faces one side of the filter screen (4), two water filter layers are arranged in sequence at the bottom of the filter screen (4), a stirring roller (6) is arranged at the bottom of the housing (1), and the stirring roller (6) comprises a rotating shaft (7) and a stirring paddle (8), wherein the stirring paddle (8) is provided with transverse and longitudinal blades (18), a reagent mixing box (9) is provided on the outer wall of the shell (1), the reagent mixing box (9) can mix the organic phase and the extractant, the reagent mixing box (9) is connected to the shell (1) through a water pipe (10), and the sedimentation box (2) is used for sedimentation and stratification of wastewater and organic phase, and an observation window (11) is provided on the outer wall of the sedimentation box (2) for observing the phase separation. 2. A rare earth wastewater treatment device according to claim 1, characterized in that: the upper cover (3) is rotatably connected to the shell (1) by a hinge, a waterproof sealing ring is arranged at the bottom of the upper cover (3), and a support frame (12) is fixedly arranged on the side wall of the shell (1) located below the upper cover (3), and the support frame (12) includes a bottom plate (13) fixedly arranged on the side wall of the shell (1), and U-shaped clamping blocks (14) are arranged at both ends of the bottom plate (13), and the filter screen (4) can move up and down inside the U-shaped clamping block (14), and the top end of the filter screen (4) is tightly attached to the bottom wall of the upper cover (3) after the upper cover is closed, so as to filter larger impurities in the wastewater. 3. A rare earth wastewater treatment device according to claim 2, characterized in that: the water inlet pipe (5) passes through the side wall of the shell (1) and is arranged on the outside of the filter screen (4), the double water filter layer includes a quartz sand filter layer (15) and an activated carbon filter layer (16) arranged in sequence from top to bottom, which are used to filter smaller impurities in the wastewater, and a drive motor (17) is arranged at the bottom of the shell (1) through a mounting frame. 4. A rare earth wastewater treatment device according to claim 3, characterized in that: the stirring roller (6) is arranged below the activated carbon filter layer (16), the rotating shaft (7) passes through the bottom wall of the shell (1) and is arranged at the output end of the driving motor (17), the stirring paddle (8) is fixedly arranged on the outer wall of the rotating shaft (7), and the paddles (18) arranged horizontally and vertically can enhance the overall stirring effect. 5. A rare earth wastewater treatment device according to claim 4, characterized in that: a reagent mixing box (9) is arranged on the top wall of the shell (1), and a manual stirring roller (19) is rotatably arranged inside, the manual stirring roller (19) passes through the side wall of the reagent mixing box (9) and is provided with a handle (20), and the top of the reagent mixing box (9) and the sedimentation box (2) are both provided with a feed port (21) with a cover. 6. A rare earth wastewater treatment device according to claim 5, characterized in that: a water pipe (10) and four downwardly inclined delivery pipes (22) are respectively arranged through the side walls of the shell (1) located below the activated carbon filter layer (16), a water pump (23) is arranged on the water pipe (10), and valves (24) are arranged inside the delivery pipe (22) and at the discharge port (25) arranged at the bottom of the sedimentation tank (2). 7. A rare earth wastewater treatment device according to claim 6, characterized in that: the number of sedimentation boxes (2) is preferably 4, which are respectively arranged around the shell (1), and the bottom thereof is a conical structure. The discharge port (25) is arranged through the conical bottom. The observation window (11) is a vertical square, and the material is preferably tempered glass. The bottom wall of the shell (1) and the sedimentation box (2) are both provided with a plurality of support columns (26).