Sewage treatment equipment

Abstract

The utility model discloses a sewage treatment device, including a main body with a cavity inside, a water inlet provided on the side wall of the main body, an adsorption filtration zone and a reaction zone provided inside the main body, the adsorption filtration zone and the reaction zone being connected in an on-off manner, a stirrer located in the reaction zone provided on the main body, a liquid discharge port and a first mud discharge port provided at the bottom of the main body, a second mud discharge port provided at the side wall of the main body, the liquid discharge port connected to a first discharge pipeline, and the second mud discharge port connected to a second discharge pipeline. The device can fill diatom mud in the adsorption filtration zone, adsorb the difficult-to-precipitate part of the electroplating degreasing wastewater by the diatom mud in the adsorption filtration zone, remove the water-soluble part after the Fenton reaction in the reaction zone, and at the same time, the diatom mud can be sunk to the bottom to filter the iron-containing waste mud remaining in the Fenton reaction, thereby realizing the secondary utilization of the diatom mud and avoiding secondary pollution of the water quality, and no additional treatment of the iron-containing waste mud is required, effectively combining the Fenton reaction with the diatom mud.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to sewage treatment equipment. Background Art

[0002] Fenton oxidation process is an effective method for treating various industrial wastewaters.

[0003] Application publication number CN113087119A proposes an improved Fenton oxidation process. However, when treating electroplating degreasing wastewater, since the wastewater contains pollutants that are difficult to degrade and precipitate, it is often difficult to meet the standards when treating the electroplating degreasing wastewater by combining Fenton oxidation treatment with flocculation precipitation.

[0004] At the same time, since the Fenton reaction will generate iron-containing waste sludge, it will also cause secondary pollution of the drainage after flocculation and sedimentation, and the iron-containing waste sludge also needs additional treatment. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a sewage treatment device.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The sewage treatment equipment comprises a main body with a cavity inside, a water inlet is arranged on the side wall of the main body, an adsorption filtration area and a reaction area are arranged in the main body, the adsorption filtration area and the reaction area are connected in an on-off manner, a stirrer located in the reaction area is arranged on the main body, a liquid discharge port and a first mud discharge port are arranged at the bottom of the main body, a second mud discharge port is arranged on the side wall of the main body, the liquid discharge port is connected to a first discharge pipeline, and the second mud discharge port is connected to a second discharge pipeline.

[0008] Preferably, in the sewage treatment equipment, the bottom of the main body is a mud hopper, and the liquid discharge port and the first mud discharge port are arranged at the bottom of the mud hopper.

[0009] Preferably, in the sewage treatment equipment, the adsorption filtration area is enclosed by the main body, a partition connected to the inner wall of the main body and a filter plate, the partition and the main body enclose a vertically extending channel, and a distance is maintained between the bottom of the partition and the inner bottom of the main body, the filter plate is connected to a driving mechanism that drives its opening and closing, and the opening and closing of the filter plate realizes the on-off control of the channel enclosed by the main body and the partition.

[0010] Preferably, in the sewage treatment equipment, the pore size of the filter holes of the filter plate is between 30-90 microns.

[0011] Preferably, in the sewage treatment equipment, the filter plate and the drive mechanism constitute a gate valve.

[0012] Preferably, in the sewage treatment equipment, the first discharge pipeline and the second discharge pipeline share a discharge pump.

[0013] Preferably, in the sewage treatment equipment, the drainage port is connected to a drainage pipe extending into the main body.

[0014] Preferably, in the sewage treatment equipment, the drainage pipe includes a main pipe and a plurality of branch pipes, and drainage holes with a smaller pore size than the diatom mud are formed on the branch pipes.

[0015] Preferably, in the sewage treatment equipment, the main pipe includes a T-shaped vertical pipe and a horizontal pipe, and the branch pipe is vertically connected to the horizontal pipe.

[0016] Preferably, in the sewage treatment equipment, the end of the branch pipe abuts against the inner wall of the mud bucket.

[0017] The advantages of the technical solution of the utility model are mainly reflected in:

[0018] This equipment is provided with an adsorption filtration zone and a reaction zone which can be switched on and off. Diatomaceous earth can be filled in the adsorption filtration zone, and the difficult-to-precipitate part of the electroplating degreasing wastewater is adsorbed by the diatomaceous earth in the adsorption filtration zone, and the water-soluble part is removed after the Fenton reaction in the reaction zone. At the same time, the diatomaceous earth can be sunk to the bottom to filter the iron-containing waste mud remaining in the Fenton reaction, thereby realizing the secondary utilization of the diatomaceous earth and avoiding secondary pollution of the water quality. There is no need for additional treatment of the iron-containing waste mud, and the Fenton reaction is effectively combined with the diatomaceous earth.

[0019] The equipment enables waste mud discharge and waste water discharge to share a pump body, which can effectively simplify the equipment structure and reduce equipment cost and operating energy consumption.

[0020] The liquid discharge pipe structure of the utility model can quickly discharge the treated wastewater and can effectively ensure the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the sewage treatment equipment of the utility model;

[0022] Figure 2 It is a front view of the liquid discharge pipe of the utility model;

[0023] Figure 3 It is a schematic diagram of the sewage treatment equipment of the utility model in which the filter plate is in a closed state and the adsorption and filtration area is filled with diatom mud;

[0024] Figure 4 It is a schematic diagram of the sewage treatment equipment of the utility model in which the filter plate is opened and the diatom mud falls into the mud bucket;

[0025] Figure 5It is a schematic diagram of waste mud being precipitated on diatom mud in the sewage treatment equipment of the utility model. DETAILED DESCRIPTION

[0026] The purpose, advantages and features of the present invention will be illustrated and explained through the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0027] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] The sewage treatment equipment disclosed by the utility model is described below in conjunction with the accompanying drawings. Figure 1 As shown, it includes a main body 100 with a cavity inside. The main body 100 can be a known feasible structure, which is preferably a tank body. The main body 100 includes a cylindrical tank body and a mud bucket 120 located below the tank body. The side wall of the main body 100 is provided with a water inlet 110, and the water inlet 110 is located at an upper position on the side wall of the main body 100. An adsorption filtration area 200 and a reaction area 300 are provided in the main body 100. The water inlet 110 is connected to the adsorption filtration area 200, and the adsorption filtration area 200 and the reaction area 300 can be connected and disconnected. The main body 100 is provided with a mixer 400 located in the reaction area 300, and a liquid discharge port 130 and a first mud discharge port 140 are provided at the bottom of the main body 100. A second mud discharge port 150 is provided at the side wall of the main body 100, and the liquid discharge port 130 is connected to a first discharge pipeline 500, and the second mud discharge port 150 is connected to a second discharge pipeline 600.

[0029] The adsorption filtration zone 200 is formed by the main body 100, a partition 700 connected to the inner wall of the main body 100, and a filter plate 800. The top of the channel is open, and diatom mud can be added from the top of the main body 100 to the opening of the channel. The partition 700 and the inner wall of the main body 100 form a channel extending vertically, and a distance is maintained between the bottom of the partition 700 and the inner bottom of the main body 100, so that water and diatom mud 001 can smoothly enter the reaction zone 300 and be deposited in the mud hopper 120.

[0030] The pore size of the filter plate 800 is between 30-90 microns, preferably about 50 microns. Such a filter plate 800 can allow wastewater to pass smoothly, while trying to avoid the passage of most diatom mud 001 particles. The filter plate 800 is connected to a driving mechanism 900 that drives its opening and closing. The opening and closing of the filter plate 800 realizes the on-off control of the channel enclosed by the main body 100 and the partition 700. Preferably, the filter plate 800 and the driving mechanism 900 constitute a gate valve, and the main machine partition 700 is flange-connected to the gate valve. Of course, the filter plate 800 and the driving mechanism 900 can also be other feasible structures. For example, in another embodiment, one side of the filter plate 800 can be hinged to the inner wall of the main body 100, and at the same time, the filter plate 800 is connected to a driving device that drives it to rotate and open and close around its hinged side. Thus, when the filter plate 800 is closed, the filter plate 800, the partition plate 700 and the main body 100 enclose the adsorption filtration area 200. At this time, the diatom mud 001 can be filled in the adsorption filtration area 200 to adsorb pollutants in the wastewater entering the adsorption filtration area 200. When the filter plate 800 is opened, the diatom mud 001 blocked by the filter plate 800 can fall into the mud bucket 120 under the action of weight, thereby adsorbing the iron-containing waste mud 00 generated in the reaction area 300.

[0031] As attached Figure 1 , Attachment Figure 2 As shown, the drain port 130 is located at the bottom of the mud bucket 120, and the drain port 130 is connected to the drain pipe 002 extending into the main body 100. The drain pipe includes a main pipe and multiple branch pipes, and the branch pipes are formed with drainage holes with a smaller aperture than the diatom mud 001. The main pipe includes a T-shaped vertical pipe 021 and a horizontal pipe 022, and multiple branch pipes 023 are vertically connected to the horizontal pipe 022. The symmetrical parts of the branch pipes are on both sides of the horizontal pipe 022, and the multiple branch pipes on each side of the horizontal pipe are symmetrically distributed. The ends of the branch pipes are against the inner wall of the mud bucket, thereby effectively ensuring the stability of the structure. In this way, the wastewater discharge efficiency can be improved as much as possible. The first mud discharge port 140 is arranged on the side of the mud bucket 120 and is located at the bottom of the mud bucket 120.

[0032] The second mud discharge port 150 is arranged on the side wall of the main body 100 and is slightly higher than the mud bucket 120. This is because, in the subsequent mud discharge, the diatom mud 001 and the waste mud need to be discharged separately, and the diatom mud 001 in the adsorption filtration area 200 will fall into the mud bucket 120. At this time, the waste mud produced by the reaction will be deposited above the diatom mud 001. Therefore, the position of the second mud discharge port 150 needs to be adjusted to an appropriate position above the mud bucket 120 to ensure the realization of separate mud discharge.

[0033] The first discharge pipeline 500 includes a pipeline connected to the liquid discharge port 130 and a first automatic valve, a discharge pump 004 and a second automatic valve sequentially arranged on the pipeline.

[0034] The structure of the second discharge pipeline 600 may be the same as or different from the structure of the first discharge pipeline 500. In addition, the second discharge pipeline 600 is connected to a sludge tank.

[0035] Better, in order to reduce equipment costs, such as Figure 1 As shown, the first discharge pipeline 500 and the second discharge pipeline 600 share a discharge pump 004, that is, the first branch 510 of the first discharge pipeline 500 and the second branch 610 of the second discharge pipeline 600 are connected in parallel at the liquid inlet end of the discharge pump 004, and the third branch 520 of the first discharge pipeline 500 and the fourth branch 620 of the second discharge pipeline are connected in parallel at the liquid outlet end of the discharge pump 004.

[0036] When the whole equipment is working, Figure 3 As shown, the filter plate 800 is kept closed first, diatom mud 001 is added to the adsorption filtration zone 200, and wastewater is introduced into the adsorption filtration zone 200 for filtration through the diatom mud 001. The filtered wastewater enters the reaction zone 300 through the filter plate 800, and the reagent required for the Fenton reaction is added from the top of the main body manually or through automated equipment, and the stirrer is started to stir for Fenton reaction. After the reaction is completed, as shown in the attached Figure 4 , Attachment Figure 5 As shown, the filter plate 800 is opened, and the diatom mud 001 and the reactants are precipitated together. Since the diatom mud 001 has a high specific gravity and a low sinking speed, it is first deposited at the mud bucket 120, and the reaction sludge slowly sinks onto the diatom mud 001. After a period of time, the second branch 610 and the fourth branch 620 are connected and the discharge pump 004 is started to discharge the waste mud 005. After the waste mud is discharged, the second branch 610 and the fourth branch 620 are closed, and the first branch 510 and the second branch 610 are connected for drainage. Drainage port, open the first mud discharge port 140 to empty and clean the bottom diatom mud 001.

[0037] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A sewage treatment device, comprising a main body with a cavity inside, a side wall of the main body being provided with a water inlet, characterized in that: An adsorption and filtration zone and a reaction zone are arranged in the main body, and the adsorption and filtration zone and the reaction zone are connected in an on-off manner. A stirrer located in the reaction zone is arranged on the main body. A liquid discharge port and a first mud discharge port are arranged at the bottom of the main body, and a second mud discharge port is arranged at the side wall of the main body. The liquid discharge port is connected to a first discharge pipeline, and the second mud discharge port is connected to a second discharge pipeline.

2. The sewage treatment equipment according to claim 1, characterized in that: The bottom of the main body is a mud bucket, and the liquid discharge port and the first mud discharge port are arranged at the bottom of the mud bucket.

3. The sewage treatment equipment according to claim 1, characterized in that: The adsorption filtration area is formed by the main body, a partition connected to the inner wall of the main body and a filter plate. The partition and the main body enclose a vertically extending channel, and a distance is maintained between the bottom of the partition and the inner bottom of the main body. The filter plate is connected to a driving mechanism that drives its opening and closing. The opening and closing of the filter plate realizes the on-off control of the channel enclosed by the main body and the partition.

4. The sewage treatment equipment according to claim 3, characterized in that: The pore size of the filter plate is between 30 and 90 microns.

5. The sewage treatment equipment according to claim 3, characterized in that: The filter plate and the driving mechanism form a plug-in valve.

6. The sewage treatment equipment according to claim 1, characterized in that: The first discharge pipeline and the second discharge pipeline share a discharge pump.

7. The sewage treatment equipment according to any one of claims 1 to 6, characterized in that: The drain port is connected to a drain pipe extending into the main body.

8. The sewage treatment equipment according to claim 7, characterized in that: The drainage pipe comprises a main pipe and a plurality of branch pipes, and drainage holes with a smaller aperture than that of the diatom mud are formed on the branch pipes.

9. The sewage treatment equipment according to claim 8, characterized in that: The main pipe includes a T-shaped vertical pipe and a horizontal pipe, and the branch pipe is vertically connected to the horizontal pipe.

10. The sewage treatment equipment according to claim 8, characterized in that: The end of the branch pipe abuts against the inner wall of the mud bucket.

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