Wastewater treatment device of dephenolization system

Abstract

The utility model relates to a wastewater treatment device of a dephenolization system, which is characterized in that a spiral pipeline is arranged outside a tank body, the lower end of the spiral pipeline is connected with a wastewater inlet pipe, the wastewater inlet pipe is connected with an extractant inlet pipe, the upper end of the spiral pipeline is connected with a tail pipe, the end part of the tail pipe is communicated with the inside of the tank body, and a plurality of spoilers are arranged in the tail pipe at intervals; the adjacent spoilers are vertically staggered with each other; wastewater enters the spiral pipeline through the wastewater liquid inlet pipe, an extraction agent enters the spiral pipeline through the extraction agent liquid inlet pipe to be premixed, the wastewater and the extraction agent rise into the tail pipe in a spiral track mode, and under the action of the spoiler, mixed liquid is subjected to the mixing action of shearing, segmentation and recombination and then is introduced into the tank body to be subjected to follow-up treatment, so that the mixing uniformity of the extraction agent and the wastewater is improved; the dephenolization time is shortened, and the wastewater treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production, especially a phenol removal system wastewater treatment device. BACKGROUND

[0002] In current industrial production, phenol-containing wastewater mainly comes from coking, oil refining, petroleum chemical industry, coal gas power station, chemical industry, papermaking, synthetic fiber industry, etc. The quality of phenol-containing wastewater is complex, and the main pollutants are ammonia, carbon dioxide, mononuclear phenol, polynuclear phenol, fatty acid, etc. The content of hydrogen sulfide is less, and a small amount of tar, fly ash and other substances are also contained. The CODcr value of wastewater is high, and it is difficult to biodegrade. In particular, phenols are of various types and high concentration. Phenolic compounds not only have high toxicity and are difficult to biodegrade, but also cause long-term harm to the water ecosystem. Therefore, phenol-containing wastewater needs to be strictly treated. At present, solvent extraction method is often used to treat high-concentration phenol-containing wastewater, which not only treats wastewater but also recovers phenolic substances, and has certain economic significance. However, when treating phenol-containing wastewater, the mixing uniformity of the extractant and the wastewater is poor, which leads to a long phenol removal time and affects the wastewater treatment efficiency. SUMMARY

[0003] The technical problem to be solved by the utility model is that the mixing uniformity of the extractant and the wastewater is poor when treating phenol-containing wastewater, which leads to a long phenol removal time and affects the wastewater treatment efficiency.

[0004] In order to solve the above problems, the utility model provides a phenol removal system wastewater treatment device, a spiral pipeline is arranged outside the tank body, a wastewater inlet pipe is connected to the lower end of the spiral pipeline, an extractant inlet pipe is connected to the wastewater inlet pipe, a tail pipe is connected to the upper end of the spiral pipeline, the end of the tail pipe is communicated with the inside of the tank body, a plurality of turbulence elements are arranged in the tail pipe at intervals, and adjacent turbulence elements are perpendicular to each other.

[0005] The phenol removal system wastewater treatment device provided by the utility model also has the following technical features:

[0006] The top of the tank body is open and is provided with a cover body, a motor is arranged on the cover body, the output end of the motor extends into the tank body and is connected with a rotating shaft, a plurality of stirring rods are arranged on the rotating shaft at intervals along the circumference of the rotating shaft.

[0007] One side of the spiral pipeline is connected with the outer surface of the tank body through a connecting block, and the other side of the spiral pipeline is provided with a supporting leg.

[0008] An extractant outlet pipe is arranged on the upper part outside the tank body, and a wastewater outlet pipe is arranged on the lower part outside the tank body.

[0009] A transparent pipe is arranged outside the tank body, the upper end of the transparent pipe is communicated with the upper part in the tank body, and the lower end of the transparent pipe is communicated with the lower part in the tank body.

[0010] The utility model has the advantages of the following: waste water and extractant are pre-mixed in the spiral pipeline through the waste water inlet pipe and the extractant inlet pipe, the waste water and the extractant rise to the tail pipe in a spiral trajectory, under the action of the turbulence member, the mixed solution is subjected to the mixing effect of shearing, segmentation and recombination, and then is introduced into the tank for subsequent treatment, the mixing uniformity of the extractant and the waste water is improved, the phenol removal time is shortened, and the waste water treatment efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the first perspective view of the utility model;

[0012] Fig. 2 It is the second perspective view of the utility model. DETAILED DESCRIPTION

[0013] Hereinafter, the utility model will be described in detail with reference to the drawings and in combination with embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0014] As shown in Figs. 1-2 The waste water treatment device of the phenol removal system of the utility model is provided with a spiral pipeline 11 outside the tank 10, the lower end of the spiral pipeline 11 is connected with a waste water inlet pipe 12, the waste water inlet pipe 12 is connected with an extractant inlet pipe 13, the upper end of the spiral pipeline 11 is connected with a tail pipe 14, the end of the tail pipe 14 is communicated with the inside of the tank 10, a plurality of turbulence members 15 are arranged in the tail pipe 14 at intervals, and the adjacent turbulence members 15 are perpendicular to each other and staggered.

[0015] The waste water and the extractant are pre-mixed in the spiral pipeline 11 through the waste water inlet pipe 12 and the extractant inlet pipe 13, the waste water and the extractant rise to the tail pipe 14 in a spiral trajectory, under the action of the turbulence member 15, the mixed solution is subjected to the mixing effect of shearing, segmentation and recombination, and then is introduced into the tank 10 for subsequent treatment, the mixing uniformity of the extractant and the waste water is improved, the phenol removal time is shortened, and the waste water treatment efficiency is improved.

[0016] Among them, the extractant commonly used in extractive phenol removal is benzene, heavy benzene or heavy solvent oil, etc.

[0017] The waste water inlet pipe 12 and the extractant inlet pipe 13 can be connected to the corresponding pump body through flanges, sealing members and bolts, and the pump body is also provided with power supply, controller and other components to control the rotation speed and start and stop, so that the waste water and the extractant can enter the spiral pipe 11 at a certain flow rate and pressure for premixing. Of course, the waste water inlet pipe 12 can be set as a venturi pipe, and the extractant inlet pipe 13 is connected to the side suction position of the venturi pipe. Since the waste water has a certain flow rate and pressure, under the effect of the venturi effect, the extractant enters the spiral pipe under the action of suction force through the extractant inlet pipe 13, thereby reducing the use of pump body and other components. In addition, the end of the extractant inlet pipe 13 close to the waste water inlet pipe 12 is higher, that is, the extractant inlet pipe 13 is inclined to avoid the flow of extractant into the spiral pipe 11 in the non-premixing state. The waste water inlet pipe 12 and the extractant inlet pipe 13 are arranged along the tangential direction of the spiral pipe 11 to make the liquid flow more smoothly.

[0018] The waste water and the extractant flow and mix from bottom to top along the spiral pipe 11, so that the spiral pipe 11 is filled with mixed liquid, improving the mixing effect.

[0019] The shape of the turbulence member 15 is not limited, which can be cylindrical, sheet-shaped, helical sheet-shaped and the like.

[0020] A heating device can be arranged in the side wall of the tank 10 to keep the extraction temperature in the tank 10.

[0021] Preferably, the top of the tank 10 is open and provided with a cover 16, the cover 16 is provided with a motor 17, the output end of the motor 17 extends into the tank 10 and is connected with a rotating shaft 18, and a plurality of stirring rods 19 are arranged on the rotating shaft 18 along the circumferential direction.

[0022] The output end of the motor 17 drives the rotating shaft 18 and the stirring rods 19 to rotate, so as to further stir and mix the premixed waste water and extractant, further improve the mixing uniformity of the extractant and waste water, shorten the dephenolization time, and improve the waste water treatment efficiency.

[0023] The motor 17 is provided with corresponding power supply and controller to control the rotation speed and start and stop. The form of the stirring rod 19 is not limited, which can be C-shaped rod, blade or helical blade.

[0024] Preferably, one side of the spiral pipe 11 is connected to the outer surface of the tank 10 through a connecting block 20, and the other side of the spiral pipe 11 is provided with a supporting leg 21.

[0025] Preferably, the upper part of the tank 10 is provided with an extractant outlet pipe 22, and the lower part is provided with a waste water discharge pipe 23.

[0026] The extraction agent outflow pipe 22 and the waste water outflow pipe 23 are connected with corresponding pipe fittings or containers through flanges, sealing members, bolts and valves, and are in communication with the inside of the tank body 10.

[0027] Preferably, the tank body 10 is externally provided with a transparent pipe 24, the upper end of the transparent pipe 24 is in communication with the upper part inside the tank body 10, and the lower end of the transparent pipe 24 is in communication with the lower part inside the tank body 10.

[0028] The separation of the mixed liquid in the tank body 10, i.e. whether the extraction agent in the upper layer or the raffinate in the lower layer is clear, can be observed through the transparent pipe 24.

[0029] The working principle of the utility model is as follows:

[0030] The waste water is introduced into the spiral pipeline 11 through the waste water inflow pipe 12, and the extraction agent is introduced into the spiral pipeline 11 through the extraction agent inflow pipe 13, for premixing by the corresponding pump body, the waste water and the extraction agent rise in a spiral track into the tail pipe 14, under the action of the spoiler 15, the mixed liquid is subjected to the mixing action of shearing, segmentation and recombination, the mixed liquid is introduced into the tank body 10, the output end of the motor 17 drives the rotating shaft 18 and the stirring rod 19 to rotate, so as to further stir and mix the premixed waste water and extraction agent, further improve the mixing uniformity of the extraction agent and the waste water, shorten the dephenolization time, and improve the waste water treatment efficiency.

[0031] After the extraction agent extracts the phenol in the waste water, the extraction agent gradually separates from the water phase due to the low density, gradually clarifies when reaching the upper layer of the tank body 10, and overflows from the extraction agent outflow pipe 22, and the extracted waste water is still high in density, gradually clarifies when reaching the lower layer of the tank body 10, and is discharged from the waste water outflow pipe 23.

[0032] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A wastewater treatment device for a phenol removal system, characterized in that, A spiral pipe (11) is provided outside the tank body (10). The lower end of the spiral pipe (11) is connected to a wastewater inlet pipe (12). An extractant inlet pipe (13) is connected to the wastewater inlet pipe (12). The upper end of the spiral pipe (11) is connected to a tail pipe (14). The end of the tail pipe (14) is connected to the inside of the tank body (10). Multiple baffles (15) are spaced apart inside the tail pipe (14). The adjacent baffles (15) are perpendicular to each other.

2. The wastewater treatment device for the phenol removal system according to claim 1, characterized in that, The top of the tank (10) is open and has a cover (16). A motor (17) is provided on the cover (16). The output end of the motor (17) extends into the tank (10) and is connected to a rotating shaft (18). Multiple stirring rods (19) are provided on the rotating shaft (18) at intervals along its circumference.

3. The wastewater treatment device for the phenol removal system according to claim 1, characterized in that, One side of the spiral pipe (11) is connected to the outer surface of the tank (10) via a connecting block (20), and the other side of the spiral pipe (11) is provided with a support leg (21).

4. The wastewater treatment device for the phenol removal system according to claim 1, characterized in that, The upper part of the tank (10) is provided with an extractant outlet pipe (22), and the lower part is provided with a wastewater discharge pipe (23).

5. The wastewater treatment device for the phenol removal system according to claim 1, characterized in that, The tank (10) is provided with a transparent tube (24) outside. The upper end of the transparent tube (24) is connected to the upper part of the tank (10), and the lower end of the transparent tube (24) is connected to the lower part of the tank (10).

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