CN212151859U - Waste water treatment device - Google Patents

Abstract

The utility model belongs to the technical field of environmental protection equipment, and discloses a wastewater treatment device, comprising: a reaction device, the reaction device comprises a reaction tank and a stirring mechanism, the stirring mechanism is installed on the reaction tank, and the stirring mechanism is used for stirring the liquid in the reaction tank ; Solid-liquid separation device, the solid-liquid separation device includes a separation tank, a center cylinder and a tooth rake mechanism, the center cylinder is arranged in the separation tank, and the reaction tank is communicated with the center cylinder; There is a mud concentration tank at the tip of the cone. The mud concentration tank is used to concentrate the bottom mud. The tooth rake mechanism is arranged at the bottom of the separation tank, and the tooth rake mechanism is used to force the bottom mud to flow to the mud concentration tank. The bottom of the mud concentration tank is provided with a discharge material The discharge port can pass part of the mud into the reaction tank. The wastewater treatment device can not only reduce the dosage of chemicals in the reaction tank and the production cost, but also improve the solid content of the bottom mud and save the space occupied by the bottom mud.

Description

A waste water treatment device

technical field

The utility model relates to the technical field of environmental protection equipment, in particular to a waste water treatment device.

Background technique

my country is rich in mineral resources, and the mining and development of mineral resources plays an important role in my country's economic development. However, under the existing technology, the mining of mineral resources will cause various pollutions such as water body, air and soil, among which the acidic wastewater produced in the mining process of copper mines will cause serious damage to the environment.

During the mining process of copper mines, due to the action of oxygen and water in sulfide deposits, elements such as sulfur and iron in them will generate sulfuric acid and metal sulfates, which dissolve in water to form acid mine wastewater. In addition, a large amount of acidic wastewater is also produced during the smelting and biological heap leaching of copper mines. The acid wastewater of copper mines is not only acidic, but also has large changes in water quantity and water quality, as well as a large amount of metal ions. If it is directly discharged without treatment, it will cause serious environmental pollution. After the acidic wastewater is discharged into water bodies such as rivers and lakes, it will change the pH value of the water body, which will not only affect the organisms in the water body, but also cause pollution to the surrounding groundwater. Collect and endanger human health.

At present, the industry mainly adopts the neutralization method of alkaline materials to treat the acid wastewater of copper mines. However, during the treatment process, the dosage of the reaction tank is large, which makes the treatment cost high, and the solid-liquid separation device has a low solid content in the bottom sludge. , The sediment concentration effect is poor, and the sediment takes up a large space.

Utility model content

The purpose of the utility model is to provide a waste water treatment device, which can not only reduce the dosage of the reaction tank, reduce the production cost, but also improve the solid content of the bottom mud and save the occupied space of the bottom mud.

For this purpose, the utility model adopts the following technical solutions:

A wastewater treatment device, comprising:

a reaction device, the reaction device includes a reaction tank and a stirring mechanism, the stirring mechanism is installed on the reaction tank, and the stirring mechanism is used for stirring the liquid in the reaction tank;

a solid-liquid separation device, the solid-liquid separation device comprises a separation tank, a center cylinder and a tooth rake mechanism, the center cylinder is arranged in the separation tank, and the reaction tank is communicated with the center cylinder;

The bottom of the separation tank is provided with a cone structure with the cone tip facing downward, and the cone tip is provided with a mud concentration tank, which is used for concentrating the bottom mud, and the tooth rake mechanism is arranged in the separation tank. and the tooth rake mechanism is used to force the bottom mud to flow to the mud concentration tank, the bottom of the mud concentration tank is provided with a discharge port, and the discharge port can pass part of the mud into the reaction tank middle.

Preferably, the reaction pool includes a primary reaction pool and a secondary reaction pool, a connection port is provided between the bottom of the primary reaction pool and the bottom of the secondary reaction pool, and the secondary reaction pool The upper part is provided with an overflow port, and the overflow port is communicated with the central cylinder.

Preferably, a cover plate is provided on the reaction tank, the stirring mechanism includes a motor, a transmission rod and a blade, the motor is mounted on the cover plate, and the transmission rod is connected to the output end of the motor and extends along the vertical direction. The blades are arranged in a straight direction, and the blades are connected to the transmission rod.

Preferably, the blades are provided with two layers, and the two layers of the blades are respectively arranged in the middle and the bottom of the reaction tank.

Preferably, the central cylinder is provided with a dosing pipe for feeding the flocculant to the liquid in the central cylinder.

Preferably, the dosing pipe is provided with a plurality of dosing points, and the plurality of the dosing points are evenly distributed along the circumferential direction of the dosing pipe.

Preferably, the solid-liquid separation device further comprises a bridge frame, the bridge frame is arranged above the separation tank, the central cylinder is connected to the bridge frame, and the center line of the central cylinder is set to be aligned with the cone The centerlines of the structures coincide.

Preferably, the tooth rake mechanism includes a transmission shaft, a tooth rake and a support seat, the tooth rake is arranged on the support seat, the support seat is connected to the transmission shaft, and the centerline of the transmission shaft is set to coincide with the centerline of the pyramidal structure.

Preferably, an overflow weir is arranged on the top side wall of the separation tank, and an overflow hole is arranged at the overflow weir, and the overflow hole is used to overflow the supernatant in the separation tank.

Preferably, a discharge pipe is provided on the discharge port, and an on-off valve is provided on the discharge pipe, and the on-off valve can control the opening and closing of the discharge port.

The beneficial effects of the present utility model:

The utility model provides a waste water treatment device, which is used for the treatment of mine acid waste water. The waste water treatment device comprises a reaction device and a solid-liquid separation device. Stir so that the liquid can be mixed uniformly. The center cylinder of the solid-liquid separation device is located in the separation tank and communicated with the reaction tank. The mixed liquid flowing from the reaction tank generates flocs in the center cylinder, and settles in the cone structure of the separation tank to form mud. It enters the mud concentration tank located at the cone tip of the cone structure under the action of the action to form mud with high solid content. The substance continues to react with the acidic wastewater in the reaction tank, and part of the slurry is discharged into the filter press for pressing. Through the above structure, the wastewater treatment device can not only reduce the dosage of the reaction tank and reduce the production cost, but also can increase the solid content of the sediment and save the occupied space for discharging the sediment.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the reaction device of the wastewater treatment device provided by the specific embodiment of the present utility model;

2 is a schematic three-dimensional structural diagram of a solid-liquid separation device of a wastewater treatment device provided by a specific embodiment of the present invention.

In the picture:

1. Reaction device; 11. Reaction tank; 111, Primary reaction tank; 112, Secondary reaction tank; 113, Connection port; 114, Overflow port; 115, Open channel; Transmission rod; 123, blade; 2, solid-liquid separation device; 21, separation tank; 211, mud concentration tank; 212, overflow weir; 213, overflow hole; 22, center cylinder; 23, tooth rake mechanism; 231, Transmission shaft; 232, tooth rake; 233, support seat; 24, bridge frame; 25, discharge pipe.

Detailed ways

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only Some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or a fixed connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The utility model provides a waste water treatment device, which is used for the treatment of mine acid waste water. As shown in Figures 1 and 2, the waste water treatment device comprises a reaction device 1 and a solid-liquid separation device 2, and the reaction device 1 is connected to the solid-liquid separation device. Device 2, the reacted liquid in the reaction device 1 can be passed into the solid-liquid separation device 2, and the solid-liquid separation device 2 can separate the solid and the liquid in the liquid, and form mud at the bottom of the solid-liquid separation device 2. The mud in the liquid separation device 2 can enter the reaction device 1 again, and the incompletely reacted alkaline substances in the mud can react with the acidic wastewater in the reaction device 1 again, thereby reducing the dosing of alkaline substances in the reaction device 1. volume and reduce production costs.

In this embodiment, the reaction device 1 includes a reaction tank 11 and a stirring mechanism 12, the stirring mechanism 12 is installed on the reaction tank 11, and the stirring mechanism 12 is used for stirring the liquid in the reaction tank 11, so that the mixture in the reaction tank 11 is mixed The liquid can be mixed evenly, so that the reaction in the reaction tank 11 is as complete as possible. Preferably, the reaction tank 11 includes a reaction tank body and a cover plate, the cover plate is half-covered on the reaction tank body, and the reaction tank body is a cuboid tank body structure, which can enhance the turbulent effect of the liquid in the reaction tank 11 and make the reaction in the liquid The material and wastewater can be fully mixed, and the reaction speed and reaction efficiency can be improved. The stirring mechanism 12 includes a motor 121, a transmission rod 122 and a blade 123. The motor 121 is mounted on the cover plate, the transmission rod 122 is connected to the output end of the motor 121, and the blade 123 is connected to the transmission rod 122. The blade 123 can be driven by the motor 121. Rotate to promote the mixing of reactants and wastewater in the reaction tank 11 . Preferably, the transmission rod 122 is arranged in the vertical direction, and the blades 123 are provided with two layers. More preferably, the blade 123 is a helical blade, which can promote the liquid in the reaction tank 11 to flow up and down, and enhance the mixing of the reactants and the wastewater in the reaction tank 11 .

Preferably, the reaction pool 11 includes a primary reaction pool 111 and a secondary reaction pool 112, and the liquid in the reaction pool 11 undergoes two reactions in the primary reaction pool 111 and the secondary reaction pool 112, which is beneficial to make the reaction sufficient. Specifically, the primary reaction pool 111 and the secondary reaction pool 112 are formed by being separated by a separator therebetween, and the bottom of the separator is provided with a connection port 113 to communicate the primary reaction pool 111 and the secondary reaction pool 112 , so that the liquid in the primary reaction pool 111 can flow into the secondary reaction pool 112 , the top of the secondary reaction pool 112 is provided with an overflow port 114 , and the overflow port 114 communicates with the solid-liquid separation device 2 .

In this embodiment, the solid-liquid separation device 2 includes a bridge frame 24 and a separation tank 21, the bridge frame 24 is installed on the top of the separation tank 21, and the liquid flowing out of the overflow port 114 is passed into the separation tank 21, and is precipitated in the separation tank 21, Realize solid-liquid separation. Preferably, the solid-liquid separation device 2 further includes a central cylinder 22 , which is placed in the separation tank 21 and communicated with the separation tank 21 . More preferably, a dosing pipe is provided in the central cylinder 22 for adding flocculant to the liquid in the central cylinder 22, and the mixed liquid from the reaction tank 11 is fully mixed in the central cylinder 22 with a hydrocyclone. , forming flocs. In this embodiment, the dosing pipe is provided with a plurality of dosing points, and the plurality of dosing points are evenly distributed along the circumferential direction of the dosing pipe, so that the flocculant can be fully mixed with the liquid in the central cylinder 22, so that the solid-liquid separation is sufficient, The flocs formed are larger and the sedimentation speed is fast.

Specifically, the upper part of the separation tank 21 is provided with a cylindrical structure, the bottom of the separation tank 21 is provided with a cone structure with the cone tip facing downward, and the center line of the cone structure coincides with the center line of the center cylinder 22, and the cone tip is provided with a cone structure. There is a mud concentration tank 211, which is conducive to the collection of the mud at the bottom of the separation tank 21 to the mud concentration tank 211, and enables the mud in the mud concentration tank 211 to be concentrated. The bottom of the mud concentration tank 211 is provided with a discharge port, which can Part of the mud is passed into the reaction tank 11, so that the incompletely reacted alkaline substances in the mud can react with the acidic wastewater in the reaction device 1 again, thereby reducing the dosage of the alkaline substances in the reaction device 1 and reducing the production cost; The discharge port can also discharge part of the mud into the filter press for pressing and subsequent processing. Preferably, the discharge port is provided with a discharge pipe 25, and the discharge pipe 25 is provided with an on-off valve, which is used to control the opening and closing of the discharge port to control the height and concentration of the mud at the bottom of the separation tank 21. The top side wall of the separation tank 21 is provided with an overflow weir 212 along the circumferential direction of the separation tank 21, and an overflow hole 213 is arranged at the overflow weir 212. The overflow hole 213 is used to overflow the supernatant in the separation tank 21, and The supernatant is passed to the clear water pool to meet the standard for discharge or reuse.

Preferably, the solid-liquid separation device 2 further includes a tooth rake mechanism 23 . The tooth rake mechanism 23 is arranged at the bottom of the separation tank 21 for forcing the bottom mud to flow into the mud concentration tank 211 . The tooth rake mechanism 23 includes a transmission shaft 231, a tooth rake 232 and a support seat 233. The tooth rake 232 is arranged on the support seat 233 at equal intervals, the support seat 233 is connected to the transmission shaft 231, and the center line of the transmission shaft 231 is arranged to be in line with the cone The center lines of the structures are coincident, and the toothed rake 232 can rotate under the drive of the transmission shaft 231 to force the mud into the mud concentration tank 211 .

In this embodiment, the equipment, pipeline valves and structures used in the wastewater treatment device are all made of corrosion-resistant materials or take anti-corrosion measures. The acid water entering the reaction tank 11 is preferably waste water after recovering valuable metals.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (10)

1. An apparatus for treating wastewater, comprising:

the device comprises a reaction device (1), wherein the reaction device (1) comprises a reaction tank (11) and a stirring mechanism (12), the stirring mechanism (12) is installed on the reaction tank (11), and the stirring mechanism (12) is used for stirring liquid in the reaction tank (11);

the solid-liquid separation device (2), the solid-liquid separation device (2) comprises a separation tank (21), a central cylinder (22) and a rake mechanism (23), the central cylinder (22) is arranged in the separation tank (21), and the reaction tank (11) is communicated with the central cylinder (22);

the bottom of separation tank (21) is provided with the cone structure that the awl point down, awl point department is equipped with mud concentration tank (211), mud concentration tank (211) are used for concentrated bed mud, tine harrow mechanism (23) set up in the bottom of separation tank (21), just tine harrow mechanism (23) are used for forcing the bed mud flow direction mud concentration tank (211), mud concentration tank (211) bottom is equipped with the bin outlet, the bin outlet can let in partial mud in reaction tank (11).

2. The wastewater treatment device according to claim 1, wherein the reaction tank (11) comprises a primary reaction tank (111) and a secondary reaction tank (112), a connecting port (113) is arranged between the bottom of the primary reaction tank (111) and the bottom of the secondary reaction tank (112) for communication, an overflow port (114) is arranged at the upper part of the secondary reaction tank (112), and the overflow port (114) is communicated with the central cylinder (22).

3. The wastewater treatment device according to claim 1, wherein a cover plate is arranged on the reaction tank (11), the stirring mechanism (12) comprises a motor (121), a transmission rod (122) and a blade (123), the motor (121) is arranged on the cover plate, the transmission rod (122) is connected to the output end of the motor (121) and is arranged along the vertical direction, and the blade (123) is connected to the transmission rod (122).

4. The wastewater treatment apparatus according to claim 3, wherein the blade (123) is provided with two layers, and the two layers of the blade (123) are respectively provided at the middle and the bottom of the reaction tank (11).

5. The wastewater treatment device according to claim 1, characterized in that an adding pipe is arranged in the central cylinder (22) for adding flocculating agent to the liquid in the central cylinder (22).

6. The wastewater treatment device according to claim 5, wherein the feeding pipe is provided with a plurality of feeding points which are uniformly distributed along the circumferential direction of the feeding pipe.

7. The wastewater treatment plant according to claim 1, characterized in that the solid-liquid separation device (2) further comprises a bridge (24), the bridge (24) is arranged above the separation basin (21), the central cylinder (22) is connected to the bridge (24), and the center line of the central cylinder (22) is arranged to coincide with the center line of the cone structure.

8. The wastewater treatment device according to claim 1, wherein the rake mechanism (23) comprises a transmission shaft (231), a rake (232) and a support base (233), the rake (232) is disposed on the support base (233), the support base (233) is connected to the transmission shaft (231), and the center line of the transmission shaft (231) is disposed to coincide with the center line of the cone structure.

9. The wastewater treatment device according to claim 1, characterized in that an overflow weir (212) is provided on the top side wall of the separation tank (21), an overflow hole (213) is provided at the overflow weir (212), and the overflow hole (213) is used for overflowing the supernatant in the separation tank (21).

10. The wastewater treatment apparatus according to claim 1, wherein a discharge pipe (25) is provided on the discharge port, and an on-off valve is provided on the discharge pipe (25) and is capable of controlling the opening and closing of the discharge port.

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