A new tailings wastewater arsenic removal device

Abstract

The utility model belongs to wastewater treatment technical field especially is a kind of novel tailing wastewater arsenic removal equipment.The utility model discloses wastewater treatment bin and the sedimentation bin of wastewater treatment bin one side installation, further includes: the inside of wastewater treatment bin is respectively by pretreatment left bin, pretreatment middle bin and pretreatment right bin, and three groups of cavities are separated by two groups of longitudinal partition, and each group of cavity is equipped with the stirring shaft for stirring motor drive rotation;Center draft tube is longitudinally installed in sedimentation bin, and the lower portion of center draft tube is equipped with the reflector located at the bottom mouth position of center draft tube.The utility model divides wastewater treatment bin into pretreatment left bin, pretreatment middle bin, pretreatment right bin three independent cavities, and the water flow path of two groups of longitudinal partition is stepped, and different reaction reagent can be respectively in three bins accurately, avoid the problem that reagent mutually interferes in traditional single reaction cavity.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a novel arsenic removal device for tailings wastewater. Background Technology

[0002] Arsenic is a recognized Group 1 carcinogen. Its metalloid properties mean that if arsenic-containing tailings wastewater is discharged directly without effective treatment, it will cause irreversible damage to soil, groundwater and ecosystems, and threaten human health. Therefore, arsenic removal from tailings wastewater has become a core necessity in the field of mining environmental protection. At present, the mainstream arsenic removal technologies for tailings wastewater in the industry mainly include ion exchange, membrane separation and traditional precipitation.

[0003] For precipitation methods, most traditional precipitation equipment adopts a single reaction chamber + single stirring structure. Agents such as polyferric sulfate, lime stabilizer, and PAM are added and reacted simultaneously in the same space, which easily leads to problems such as mutual interference and uneven mixing of agents.

[0004] Therefore, we propose a new type of arsenic removal equipment for tailings wastewater to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a novel arsenic removal equipment for tailings wastewater, which solves the problems mentioned in the background technology. For precipitation methods, most traditional precipitation equipment adopts a single reaction chamber + single stirring structure. Agents such as polyferric sulfate, lime stabilizer, and PAM are added and reacted simultaneously in the same space, which easily leads to mutual interference and uneven mixing of agents.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A novel tailings wastewater arsenic removal device includes a wastewater treatment chamber and a settling chamber installed on one side of the wastewater treatment chamber. It also includes: the interior of the wastewater treatment chamber is composed of a pretreatment left chamber, a pretreatment middle chamber and a pretreatment right chamber, and the three cavities are separated by two sets of longitudinal partitions. Each cavity is equipped with a stirring shaft for the stirring motor to drive the rotation.

[0010] The central guide pipe is installed longitudinally inside the settling chamber, and a reflector plate is located at the bottom of the central guide pipe.

[0011] Furthermore, the wastewater treatment chamber is equipped with an inlet pipe on its side, and the two sets of partitions are spaced apart from the top and bottom of the wastewater treatment chamber, respectively.

[0012] Furthermore, the end of the wastewater treatment chamber furthest from the inlet pipe is connected to a chamber body connecting pipe, and one end of the chamber body connecting pipe extends into the interior of the settling chamber and is connected to the central guide pipe.

[0013] Furthermore, the outer wall of the central guide pipe is reinforced by a support plate, and a sludge discharge pipe is installed at the bottom of the settling chamber.

[0014] Furthermore, a connecting rod is fixedly installed at the bottom of the reflector, and an adjustment extension plate extending toward the connecting rod is fixedly installed on the inner wall of the settling chamber.

[0015] Furthermore, the surface of the adjustment extension plate is provided with a height adjustment groove, and the end of the connecting rod that extends into the height adjustment groove has a rectangular structure.

[0016] Furthermore, a locking side plate is fixed to the surface of the adjusting extension plate, and a locking screw runs through the surface of the locking side plate.

[0017] Furthermore, an overflow weir is fixed to the top of the inner wall of the settling chamber, and an outlet pipe is connected to the outer wall of the settling chamber.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a novel arsenic removal equipment for tailings wastewater, which has the following beneficial effects:

[0020] This utility model divides the wastewater treatment chamber into three independent cavities: a pretreatment left cavity, a pretreatment middle cavity, and a pretreatment right cavity. Through two sets of longitudinal partitions and stepped water flow paths, different reaction agents can be precisely applied to each of the three cavities, avoiding the problem of mutual interference between agents in traditional single reaction cavities.

[0021] This application designs a dual-adaptive structure for the reflector plate with adjustable height and replaceable cone angle. The connecting rod can be slidably connected along the height adjustment groove to achieve precise adjustment of the reflector plate height. When the wastewater flow rate increases, the reflector plate can be raised to expand the water flow interception area and avoid impacting the sludge layer; when the flow rate decreases, the reflector plate can be lowered to reduce the diffusion range and avoid stagnant water areas. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an internal view of the wastewater treatment chamber of this utility model;

[0024] Figure 3 This is an internal view of the settling chamber of this utility model;

[0025] Figure 4 This is a bottom view of the adjustable extension plate of this utility model.

[0026] In the diagram: 1. Wastewater treatment chamber; 2. Agitator motor; 3. Agitator shaft; 5. Guide pipe; 6. Overflow weir; 7. Outlet pipe section; 8. Support plate; 9. Central guide pipe; 10. Sludge discharge pipe section; 11. Pretreatment left chamber; 13. Pretreatment middle chamber; 14. Pretreatment right chamber; 15. Chamber connecting pipe; 16. Settling chamber; 17. Reflector plate; 18. Connecting drag bar; 19. Adjustable extension plate; 20. Height adjustment groove; 21. Locking side plate; 22. Locking screw. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example

[0029] like Figure 1-4 As shown in the figure, a novel tailings wastewater arsenic removal device according to one embodiment of the present invention includes a wastewater treatment chamber 1 and a settling chamber 16 installed on one side of the wastewater treatment chamber 1. The interior of the wastewater treatment chamber 1 is composed of a pretreatment left chamber 11, a pretreatment middle chamber 13, and a pretreatment right chamber 14, and the three cavities are separated by two sets of longitudinal partitions. Each cavity is equipped with a stirring shaft 3 for driving the stirring motor 2 to rotate. Each stirring motor 2 corresponds to one set of stirring shafts 3. Wastewater is introduced into the wastewater treatment chamber 1 through the water inlet pipe on the side of the wastewater treatment chamber 1. The stirring shafts 3 connected to the stirring motor 2 can stir the wastewater in the cavity to accelerate the mixing of the drugs. Both sets of partitions are fixed to the inner wall of the wastewater treatment chamber 1, and the left partition is fixed to the bottom of the wastewater treatment chamber 1, and the right partition is fixed to the top of the wastewater treatment chamber 1. Polyferric sulfate (PFS), lime, and polyammonium hydroxide (PAM) are respectively added to the chambers of the pretreatment left chamber 11, the pretreatment middle chamber 13, and the pretreatment right chamber 14. The PFS added to the pretreatment left chamber 11 hydrolyzes in water to generate ferric hydroxide colloid with strong adsorption properties. This colloid can adsorb soluble arsenic ions from the wastewater onto its surface through electrostatic adsorption and complexation, forming tiny arsenic-containing flocs. This initially achieves the transfer of arsenic ions from water to solid flocs. Lime reacts fully with the wastewater to adjust its pH value. PAM mixes thoroughly with the wastewater, adsorbing multiple tiny arsenic-containing flocs, connecting and aggregating them to form larger, denser flocs, increasing their volume and weight, and providing sufficient settling velocity for subsequent sedimentation and separation. The mixing efficiency is improved by the aforementioned stirring motor 2 and stirring shaft 3.

[0030] Wastewater treatment chamber 1 and settling chamber 16 are connected by a chamber body connecting pipe 15. One end of the chamber body connecting pipe 15 is connected to a guide pipe 5 that extends into the settling chamber 16, allowing the coagulated wastewater to enter the guide pipe 5 through the intermediate chamber body connecting pipe 15 and then enter the central guide pipe 9 at the center of the settling chamber 16. The outer wall of the central guide pipe 9 is reinforced by a support plate 8, with the end of the support plate 8 fixed to the inner wall of the settling chamber 16. The bottom of the central guide pipe 9 is located at the bottom opening of the central guide pipe 9. The reflector 17 has a connecting rod 18 fixed at its bottom, and the inner wall of the settling chamber 16 has an adjusting extension plate 19 extending toward the connecting rod 18. The surface of the adjusting extension plate 19 has a longitudinally designed height adjustment groove 20. The connecting rod 18 has an L-shaped structure, and the horizontal axis end of the connecting rod 18 is designed to extend into the height adjustment groove 20, so that the connecting rod 18 can slide longitudinally in the height adjustment groove 20. This allows the height of the reflector 17 to be adjusted below the central guide pipe 9.

[0031] To adjust the height of the reflector 17, one end of the adjustment extension plate 19 is fixed to the inner wall of the settling chamber 16, and a downwardly extending locking side plate 21 is fixed to the surface of the adjustment extension plate 19. The surface of the locking side plate 21 has multiple sets of horizontal holes arranged longitudinally, and each horizontal hole contains a screw hole. Each hole corresponds to a height positioning point. Correspondingly, the rectangular structure surface of the connecting rod 18 also has through holes. Therefore, the connecting rod 18 can be positioned by tightening the locking screw 22. The height of the reflector 17 can be adjusted according to actual needs, and the reflector 17 with different cone angles can be replaced by its detachable capability.

[0032] Wastewater moves downward from the central guide pipe 9 and falls onto the reflector plate 17, changing the direction of the water flow. This causes the wastewater to flow upward after spreading evenly in all directions, preventing it from directly impacting the sludge at the bottom of the sedimentation zone. At the same time, it ensures that the water flow is evenly distributed within the sedimentation zone. An overflow weir 6 is fixed to the top of the inner wall of the sedimentation chamber 16, and an outlet pipe 7 is connected to the outer wall of the sedimentation chamber 16. The clear water, after arsenic removal, continues to flow upward and eventually enters the overflow weir 6 and is discharged through the outlet pipe 7 in compliance with standards. During the slow upward flow of the water, large and heavy arsenic-containing flocs settle at a speed exceeding the upward speed of the water flow. They will settle downward under the action of gravity and eventually accumulate in the sludge hopper at the bottom of the sedimentation zone. They are then periodically discharged from the sludge discharge pipe 10 on the surface of the sedimentation chamber 16 and connected to the sludge hopper.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel tailings wastewater arsenic removal device, comprising a wastewater treatment chamber (1) and a settling chamber (16) installed on one side of the wastewater treatment chamber (1), characterized in that, It also includes: the interior of the wastewater treatment chamber (1) is composed of a pretreatment left chamber (11), a pretreatment middle chamber (13) and a pretreatment right chamber (14), and the three cavities are separated by two sets of longitudinal partitions. Each cavity is equipped with a stirring shaft (3) for the stirring motor (2) to drive the rotation. A central guide pipe (9) is installed longitudinally inside the settling chamber (16), and a reflector plate (17) is provided below the central guide pipe (9) at the bottom opening of the central guide pipe (9).

2. The novel arsenic removal equipment for tailings wastewater according to claim 1, characterized in that: The wastewater treatment chamber (1) is provided with an inlet pipe on its side, and the two sets of partitions are spaced apart from the top and bottom of the wastewater treatment chamber (1).

3. The novel arsenic removal equipment for tailings wastewater according to claim 1, characterized in that: The wastewater treatment chamber (1) is connected to a chamber body connecting pipe (15) at the end away from the inlet pipe, and one end of the chamber body connecting pipe (15) extends into the interior of the settling chamber (16) and is connected to the central guide pipe (9).

4. The novel arsenic removal equipment for tailings wastewater according to claim 1, characterized in that: The outer wall of the central guide pipe (9) is reinforced by a support plate (8), and a sludge discharge pipe (10) is installed at the bottom of the settling chamber (16).

5. The novel arsenic removal equipment for tailings wastewater according to claim 1, characterized in that: The bottom of the reflector (17) is fixed with a connecting rod (18), and the inner wall of the settling chamber (16) is fixed with an adjustment extension plate (19) extending toward the connecting rod (18).

6. The novel arsenic removal equipment for tailings wastewater according to claim 5, characterized in that: The surface of the adjustment extension plate (19) is provided with a height adjustment groove (20), and the end of the connecting rod (18) extending into the height adjustment groove (20) is rectangular.

7. The novel arsenic removal equipment for tailings wastewater according to claim 6, characterized in that: The surface of the adjustment extension plate (19) is fixed with a locking side plate (21), and a locking screw (22) runs through the surface of the locking side plate (21).

8. The novel arsenic removal equipment for tailings wastewater according to claim 1, characterized in that: The inner wall of the settling chamber (16) is fixed with an overflow weir (6) near the top, and the outer wall of the settling chamber (16) is connected with a water outlet pipe (7).

Images