Sodium acetate mixing device for sewage treatment

Abstract

The utility model discloses a sodium acetate mixing device for sewage treatment. The sodium acetate mixing device comprises a denitrification tank and a sludge dewatering box which are communicated with each other, the device further comprises a sewage tank; a conveying pipe is arranged at the upper end of the sewage tank, a pump is arranged in the sewage tank, a plurality of branch pipes are connected to the conveying pipe, and the branch pipes respectively extend into two sides in the denitrification tank; a zoning mixing assembly; a layered conveying assembly; comprising an inverted-U-shaped through pipe, an input pipe is connected to the middle end of the through pipe, a plurality of ingress pipes are connected to the two sides of the through pipe, and the ingress pipes extend into the corresponding mixing bins respectively. According to the utility model, sodium acetate can be highly added, and auxiliary mixing is carried out through the stirring rod which can simultaneously rotate and stir up and down, so that the reaction efficiency and effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, specifically point to a kind of sodium acetate mixing device for sewage treatment. BACKGROUND

[0002] In the sewage treatment operation, sodium acetate can be used as a carbon source to domesticate denitrifying sludge, and a high specific denitrification rate can be obtained. The negative ions generated after the hydrolysis of sodium acetate can neutralize the acidic ions in water, so it can be used to adjust the pH value in the sewage treatment. Sodium acetate can also be used to coordinate the effect and improve the strength of corrosion inhibition, especially in sewage containing nitrite and phosphorus. In addition, sodium acetate can be used as a cleaning agent to clean the sedimentation tank, aerator, pipeline and other equipment, to maintain the cleanliness and good working condition of the equipment.

[0003] When sodium acetate is used as a carbon source to promote denitrification, due to the single addition position, large amount of sewage and large depth, the combination of sewage and carbon source cannot be relatively uniform, and the mixing is limited. In addition, during this operation, as the carbon source is used by microorganisms, it is converted into cell material through metabolic activity, which produces sludge, which needs to be transported to the external sludge dewatering device, and the processing process is disconnected, with low efficiency. SUMMARY

[0004] The utility model solves the above-mentioned technical problem that sodium acetate as a carbon source is not mixed uniformly with sewage and a large amount of sludge is produced during the process and needs to be treated separately, and provides a sodium acetate mixing device for sewage treatment.

[0005] To solve the above technical problems, the utility model provides a technical scheme: a sodium acetate mixing device for sewage treatment, comprising a denitrification tank and a sludge dewatering tank connected in communication; further comprising:

[0006] A sewage tank is provided with a delivery pipe at the upper end and a pump inside. A plurality of branch pipes are connected to the delivery pipe. The branch pipes extend into the two sides of the denitrification tank.

[0007] A partitioned mixing assembly is provided. The denitrification tank is provided with a hollow cylindrical mixing bin. Motors are provided below the denitrification tank and correspond to the mixing bin. A rotating shaft is provided at the output end of the motor and extends into the mixing bin. A plurality of fixed rings are provided on the outside of the rotating shaft. Stirring rods are hingedly connected to the two sides of the fixed rings. Discs are rotatably provided on the denitrification tank and correspond to the mixing bin. Electric push rods are provided on the discs. L-shaped connecting frames are provided at the upper end of the electric push rods. Inverted U-shaped linkage frames are provided at the lower end of the connecting frames and extend through the discs. The linkage frames are respectively and slidably connected to the corresponding stirring rods.

[0008] The layered conveying assembly comprises a reverse U-shaped pipe, an input pipe is connected to the middle end of the pipe, a plurality of guide pipes are connected to both sides of the pipe, and the guide pipes extend into corresponding mixing bins.

[0009] Further, the denitrification tank is provided with a mounting frame below, and the sludge dewatering tank is located below the mounting frame.

[0010] Further, the linkage frame is provided with a plurality of limiting blocks, and the stirring rods are each provided with a limiting sliding groove capable of being slidably connected with the limiting blocks.

[0011] Further, the lower end of the denitrification tank is provided with a sealing bearing capable of being connected with the rotating rod, and the bottom surface of the denitrification tank is provided with a recess capable of accommodating the motor.

[0012] Further, the sludge dewatering tank is provided with a foul gas pipe near the upper end on the outer side, the upper end of the foul gas pipe is connected with a treatment tank, the treatment tank is provided with an adsorption layer, and the upper end of the treatment tank is provided with a discharge pipe.

[0013] Further, the outer side of the disc is provided with an annular protrusion, the upper end of the denitrification tank is provided with a circular groove capable of accommodating the disc, and the circular groove is provided with an annular groove capable of being rotationally connected with the annular protrusion.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The denitrification operation is divided into zones and performed simultaneously, the phenomenon that the same tank causes large sewage quantity and is difficult to mix uniformly is reduced, sodium acetate can be divided into heights and input, the stirring rod can be rotated and stirred up and down to assist mixing, the reaction efficiency and effect are improved, and the like.

[0016] The sludge dewatering tank is directly arranged below the denitrification tank, the discharged sludge-containing sewage is subjected to dewatering operation, and hydrogen sulfide and foul gas generated in the process can be adsorbed when being discharged, so that the influence on the environment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the partition mixing assembly of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the layered conveying assembly of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the denitrification tank of the utility model.

[0021] As shown in the figure: 1, denitrification tank, 2, sludge dewatering tank, 3, mounting frame, 4, base, 5, sewage tank, 6, conveying pipe, 7, motor, 8, rotating rod, 9, stirring rod, 10, disc, 11, electric push rod, 12, connecting frame, 13, linkage frame, 14, limit block, 15, limit sliding slot, 16, through pipe, 17, input pipe, 18, inlet pipe, 19, odor pipe, 20, treatment box, 21, outlet pipe, 22, annular protrusion, 23, annular groove. DETAILED DESCRIPTION

[0022] The utility model will be made further detailed explanation in combination with the drawings below.

[0023] Embodiment one, in combination with the drawings Figure 1 A sodium acetate mixing device for sewage treatment, comprising a denitrification tank 1 and a sludge dewatering tank 2 that are in communication, the two are directly connected by a vertical transmission pipe, and a valve is arranged on the transmission pipe; the denitrification tank 1 is provided with a mounting frame 3 below, and the sludge dewatering tank 2 is located below the mounting frame 3, so that the sludge dewatering tank 2 and the denitrification tank 1 are installed in an up-down manner, and the sludge dewatering tank 2 and the denitrification tank 1 can assist in conveying the sewage containing sludge by gravity; the sludge dewatering tank 2 is provided with a base 4 below.

[0024] In combination with the drawings Figure 1 Regarding the sewage tank 5; the sewage tank 5 is provided with a conveying pipe 6 at the upper end, and a pump is arranged inside; a plurality of branch pipes are connected to the conveying pipe 6, and the branch pipes extend into both sides of the denitrification tank 1 respectively; the sewage can be uniformly conveyed into the two mixing chambers;

[0025] In combination with the drawings Figure 1 , 2 Regarding the partitioned mixing assembly; the denitrification tank 1 is provided with symmetrical hollow cylindrical mixing chambers; the hollow cylindrical shape facilitates the subsequent rotating operation of the stirring blades and reduces dead angles; the denitrification tank 1 is provided with a motor 7 below and corresponding to the mixing chamber; the output end of the motor 7 extends into the mixing chamber and is provided with a rotating rod 8; the lower end of the denitrification tank 1 is provided with a sealing bearing capable of being connected with the rotating rod 8; the bottom surface of the denitrification tank 1 is provided with a recess capable of accommodating the motor 7, thereby providing a mounting position for the motor 7; the sealing bearing is used to prevent liquid leakage;

[0026] In combination with the drawings Figure 1 , 2 , 4, a plurality of fixing rings are arranged on the outer side of the rotating rod 8, and a stirring rod 9 is hingedly arranged on both sides of each fixing ring; a disc 10 is rotatably arranged on the denitrification tank 1 and corresponding to the mixing chamber; the outer side of the disc 10 is provided with an annular protrusion 22; the upper end of the denitrification tank 1 is provided with a circular groove capable of accommodating the disc 10; the circular groove is provided with an annular groove 23 capable of being rotatably connected with the annular protrusion 22; the annular groove 23 can limit the annular protrusion 22, so that the annular protrusion 22 can rotate smoothly;

[0027] The electric push rod 11 is provided with an L-shaped connecting frame 12 at the upper end, the connecting frame 12 extends through the disc 10 at the lower end and is provided with an inverted U-shaped linkage frame 13, the linkage frame 13 is slidably connected with the corresponding stirring rod 9 at both sides; the linkage frame 13 is provided with a plurality of limiting blocks 14, and the stirring rod 9 is provided with a limiting sliding groove 15 which can be slidably connected with the limiting block 14, so that when the stirring rod 9 is driven up and down by the linkage frame 13, it will not be blocked and limited by the limiting block 14;

[0028] In the above embodiment, the stirring rod 9 can rotate under the driving of the rotating rod 8, and the linkage rod 13 moves up and down under the driving of the electric push rod 11 and the connecting frame 12, so that the stirring rod 9 can realize both circumferential movement and up-down stirring, thereby expanding the stirring range and angle and improving the mixing effect;

[0029] The drawings show Figure 1 , 3 , the layered conveying assembly; the inverted U-shaped pipe 16 is provided with an input pipe 17 at the upper end of the middle, and a plurality of guide pipes 18 are connected at both sides of the pipe 16, the guide pipes 18 extend into the corresponding mixing bin, so that sodium acetate can be sent into the mixing bin at different heights, thereby improving the mixing uniformity.

[0030] The drawings show Figure 1 , the sludge dewatering tank 2 is provided with a foul gas pipe 19 at the outer side and close to the upper end, the foul gas pipe 19 is provided with a treatment tank 20 at the upper end, the treatment tank 20 is provided with an adsorption layer, the adsorption layer can be activated carbon filler, the filler can increase the contact area and the adsorption effect is better, and the treatment tank 20 is provided with a guide pipe 21 at the upper end.

[0031] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by this, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments of the technical scheme can be designed, which should belong to the protection scope of the present application.

Claims

1. A sodium acetate mixing device for wastewater treatment, comprising a connected denitrification tank (1) and a sludge dewatering tank (2); characterized in that: Also includes: Wastewater tank (5); The wastewater tank (5) is equipped with a conveying pipe (6) at the upper end and a pump inside. Several branch pipes are connected to the conveying pipe (6), and the branch pipes extend into both sides of the denitrification tank (1). A partitioned mixing assembly includes symmetrical hollow cylindrical mixing chambers located within a denitrification tank (1). Each of the denitrification tank (1) and the mixing chambers is equipped with a motor (7). Each motor (7) has a rotating rod (8) extending from its output end into the mixing chamber. Several fixing rings are located on the outer side of each rotating rod (8), and stirring rods (9) are hinged to both sides of each fixing ring. Each of the denitrification tank (1) and the mixing chambers is equipped with a rotating disc (10). Each disc (10) has an electric push rod (11). The upper end of each electric push rod (11) has an L-shaped connecting frame (12). The lower end of the connecting frame (12) extends through the disc (10) and is equipped with an inverted U-shaped linkage frame (13). Both sides of the linkage frame (13) are slidably connected to the corresponding stirring rods (9). A layered conveying assembly includes an inverted U-shaped conduit (16), an input pipe (17) connected to the middle end of the conduit (16), and several inlet pipes (18) connected to both sides of the conduit (16), with the inlet pipes (18) extending into the corresponding mixing chambers.

2. The sodium acetate mixing device for wastewater treatment according to claim 1, characterized in that: The denitrification tank (1) is provided with a mounting frame (3) below it, and the sludge dewatering tank (2) is located below the mounting frame (3); the sludge dewatering tank (2) is provided with a base (4) below it.

3. The sodium acetate mixing device for wastewater treatment according to claim 1, characterized in that: The linkage frame (13) is provided with several limiting blocks (14), and the stirring rod (9) is provided with limiting grooves (15) that can slide and connect with the limiting blocks (14).

4. The sodium acetate mixing device for wastewater treatment according to claim 1, characterized in that: The denitrification tank (1) is provided with a sealed bearing at the lower end that can be connected to the rotating rod (8); the bottom surface of the denitrification tank (1) is provided with a recess that can accommodate the motor (7).

5. A sodium acetate mixing device for wastewater treatment according to claim 1, characterized in that: An odor pipe (19) is provided on the outside of the sludge dewatering tank (2) and near the top. The upper end of the odor pipe (19) is connected to a treatment box (20). An adsorption layer is provided inside the treatment box (20). An outlet pipe (21) is provided at the upper end of the treatment box (20).

6. A sodium acetate mixing device for wastewater treatment according to claim 1, characterized in that: The outer side of the disc (10) is provided with an annular protrusion (22); the upper end of the denitrification tank (1) is provided with a circular groove that can accommodate the disc (10), and the circular groove is provided with an annular groove (23) that can be rotatably connected with the annular protrusion (22).

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