CN215799006U - Sewage treatment system for shortening separation time by utilizing magnetic force - Google Patents

Abstract

The utility model provides a sewage treatment system for shortening separation time by utilizing magnetic force, which comprises a primary solid-liquid separation system, a secondary solid-liquid separation system and an auxiliary unit, wherein the auxiliary unit comprises a dosing unit, the primary solid-liquid separation system comprises coagulation equipment, a magnetic separator and magnetic powder separation equipment, the coagulation equipment, the magnetic separator and the magnetic powder separation equipment are sequentially connected through pipelines, the dosing unit is respectively connected with the coagulation equipment and the secondary solid-liquid separation system through pipelines, the magnetic powder separation equipment is connected with the secondary solid-liquid separation system through a pipeline, the primary solid-liquid separation system is used for carrying out primary solid-liquid separation on sewage, and the secondary solid-liquid separation system is used for carrying out dehydration treatment on sludge obtained by treatment in the primary solid-liquid separation system.

Description

Sewage treatment system for shortening separation time by utilizing magnetic force

Technical Field

The utility model relates to the field of sewage treatment, in particular to a sewage treatment system for shortening separation time by utilizing magnetic force.

Background

The conventional secondary sedimentation tank is selected in a sedimentation unit of most of the existing sewage treatment plants, although the conventional sedimentation process is mature in technology and wide in application, the obvious defects exist, and the sedimentation tank is used for layering muddy water under the action of gravity, so that the separation time is long, and the occupied area is large.

And the finished sludge obtained by the secondary sedimentation tank has high water content, and a large landfill site is needed if the finished sludge is used for landfill.

Disclosure of Invention

Based on this, there is a need for a sewage treatment system that utilizes magnetic force to reduce the separation time.

In order to solve the technical problems, the utility model provides a sewage treatment system for shortening separation time by utilizing magnetic force, which comprises a primary solid-liquid separation system, a secondary solid-liquid separation system and an auxiliary unit, wherein the auxiliary unit comprises a dosing unit, the primary solid-liquid separation system comprises a coagulation device, a magnetic separator and a magnetic powder separation device, the coagulation device, the magnetic separator and the magnetic powder separation device are sequentially connected through a pipeline, the dosing unit is respectively connected with the coagulation device and the secondary solid-liquid separation system through a pipeline, the magnetic powder separation device is connected with the secondary solid-liquid separation system through a pipeline, the primary solid-liquid separation system is used for carrying out primary solid-liquid separation on sewage, and the secondary solid-liquid separation system is used for carrying out dehydration treatment on sludge obtained by treatment in the primary solid-liquid separation system.

Preferably, the medicine adding unit comprises a first medicine unit and a second medicine unit, the first medicine unit and the second medicine unit are respectively connected with the coagulation device, and the first medicine unit and the second medicine unit are respectively used for adding different medicines.

Preferably, second grade solid-liquid separation system includes contact chamber, settling basin and hydroextractor, the contact chamber pass through the pipeline with the settling basin is connected, the bottom of settling basin pass through the pipeline with the hydroextractor is connected, the settling basin with be provided with the pipeline mixer in the pipeline between the hydroextractor, first medicament unit and second medicament unit respectively with the pipeline mixer is connected.

Preferably, the auxiliary unit still includes washing unit and recovery plant, wash the unit with the hydroextractor passes through the pipe connection, magnetic particle separation equipment's input with magnetic separator's first output is connected, the input in contact pond with magnetic particle separation equipment's first input is connected, recovery plant with magnetic particle separation equipment's second output is connected.

Preferably, the contact tank is connected with an ozone inlet pipeline, a stirring device is arranged in the contact tank and used for stirring the contents, so that muddy water in the contact tank is fully contacted with ozone.

Preferably, the system further comprises a mud storage bin and a water storage structure, the output end of the dewatering machine comprises a water outlet pipeline and a mud outlet pipeline, and the water outlet pipeline is connected with the water storage structure.

Preferably, a cutting device is arranged on a pipeline between the sedimentation tank and the dewatering machine, the cutting device is used for cutting sludge, and the upper end of the sedimentation tank is connected with the water storage structure through a pipeline.

Preferably, the second output of the magnetic separator is connected to the water storage structure.

Preferably, the bottom of the sludge storage bin is provided with a conveying pump, and the output end of the conveying pump is positioned at the discharge port of the sludge storage bin.

Preferably, the recovery device is connected with the magnetic separator, and the recovery device is provided with a supplementary pipeline for adding magnetic powder.

The utility model has the beneficial effects that: the system carries out solid-liquid separation through the coagulation equipment, the magnetic separator and the magnetic powder separation equipment, simultaneously, sludge obtained by solid-liquid separation of the primary solid-liquid separation system is connected into the secondary solid-liquid separation system for further solid-liquid separation, and the sludge-water separation of the magnetic separator is combined with the dehydration machine for dehydration, so that the sludge-water separation time in sewage treatment and the water content in finished sludge are greatly reduced, and the problems of large occupied area and long treatment time of the existing secondary sedimentation tank structure are solved.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is an overall structural view of a sewage treatment system according to a preferred embodiment of the present invention;

in the figure: a coagulation device 1; a magnetic separator 2; a magnetic powder separation device 3; a dosing unit 4; a contact tank 5; a sedimentation tank 6; a dehydrator 7; a flushing unit 8; a recovery device 9; ozone is introduced into the pipeline 10; a sludge storage bin 11; a water storage structure 12; a supplementary duct 13; a raw water structure 14; a discharge port 15; a conduit 16.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present invention provides a sewage treatment system for shortening a separation time by using a magnetic force, comprising a primary solid-liquid separation system, a secondary solid-liquid separation system and an auxiliary unit, the auxiliary unit comprises a dosing unit 4, the primary solid-liquid separation system comprises a coagulation device 1, a magnetic separator 2 and a magnetic powder separation device 3, the coagulation device 1, the magnetic separator 2 and the magnetic powder separation device 3 are connected in sequence through a pipeline 16, the dosing unit 4 is respectively connected with the coagulation device 1 and the secondary solid-liquid separation system through a pipeline 16, the magnetic powder separation equipment 3 is connected with the secondary solid-liquid separation system through a pipeline 16, the primary solid-liquid separation system is used for carrying out primary solid-liquid separation on sewage, and the secondary solid-liquid separation system is used for dehydrating the sludge obtained by treatment in the primary solid-liquid separation system. The coagulation equipment 1 is connected with a raw water structure 14, raw water enters the coagulation equipment 1 and then coagulates with a medicament added by the medicament adding unit 4, so that particles in the raw water are agglomerated and are convenient to separate, magnetic powder is added into the magnetic separator 2, solid and liquid are separated through an internal magnetic drum, the separated solid mixture enters the magnetic powder separation equipment 3, the magnetic powder separation equipment 3 is used for separating sludge in the solid mixture from the magnetic powder, the separated magnetic powder can be recycled, and the separated sludge enters the secondary solid-liquid separation system for solid-liquid separation again.

Referring to fig. 1, in a preferred embodiment, the dosing unit 4 includes a first medicine unit and a second medicine unit, the first medicine unit and the second medicine unit are respectively connected with the coagulation device 1, and the first medicine unit and the second medicine unit are respectively used for adding different medicines. The first medicament unit and the second medicament unit are respectively used for adding flocculating agents PAC and PAM, and the two flocculating agents have better effect than that of independently adding one flocculating agent.

Referring to fig. 1, in a preferred embodiment, the secondary solid-liquid separation system includes a contact tank 5, a settling tank 6 and a dewatering machine 7, the contact tank 5 is connected to the settling tank 6 through a pipe 16, the bottom of the settling tank 6 is connected to the dewatering machine 7 through a pipe 16, a pipe mixer is arranged in a pipe between the settling tank 6 and the dewatering machine 7, the first reagent unit and the second reagent unit are respectively connected to the pipe mixer, and the pipe mixer mixes the flocculating agent and the sludge sufficiently. The sludge separated by the magnetic powder separation equipment 3 enters a contact tank 5, enters a sedimentation tank 6 after reacting with ozone, further demixing the sludge after the sludge is deposited in the sedimentation tank 6, and further dewatering the sludge at the lower layer of the sedimentation tank 6 by a dewatering machine 7.

Referring to fig. 1, in a preferred embodiment, the auxiliary unit further includes a washing unit 8 and a recycling device 9, the washing unit 8 is connected to the dehydrator 7 through a pipe 16, an input end of the magnetic particle separator 3 is connected to a first output end of the magnetic separator 2, an input end of the contact tank 5 is connected to a first input end of the magnetic particle separator 3, and the recycling device 9 is connected to a second output end of the magnetic particle separator 3.

Referring to fig. 1, in a preferred embodiment, the contact tank 5 is connected with an ozone inlet pipe 10, and a stirring device is arranged in the contact tank 5 and used for stirring the contents so as to fully contact the muddy water in the contact tank 5 with the ozone. Ozone breaks the walls of the sludge in the muddy water, and then releases water.

Referring to fig. 1, in the preferred embodiment, the system further comprises a mud storage silo 11 and a water storage structure 12, and the output end of the dewatering machine 7 comprises an outlet pipe and a mud outlet pipe, and the outlet pipe is connected with the water storage structure 12. The mud outlet pipeline is connected with the mud storage bin 11. The sludge temporarily stored in the sludge storage bin 11 has low water content and can be used for landfill treatment.

Referring to fig. 1, in a preferred embodiment, the pipe between the settling tank 6 and the dewatering machine 7 is provided with a cutting device for cutting sludge, and the upper end of the settling tank 6 is connected to the water storage structure 12 through a pipe. The cutting device is a cutting pump and is used for cutting large sludge into small sludge.

Referring to fig. 1, in a preferred embodiment, a second output of the magnetic separator 2 is connected to the water storage structure 12. The water storage structure 12 is connected to an output pipeline.

Referring to fig. 1, in a preferred embodiment, a conveying pump is arranged at the bottom of the sludge storage bin 11, and the output end of the conveying pump is located at the discharge hole 15 of the sludge storage bin.

Referring to fig. 1, the recycling apparatus 9 is connected to the magnetic separator 2, and the recycling apparatus 9 is provided with a supplementary pipe 13 for adding magnetic powder.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The utility model provides an utilize sewage treatment system of magnetic force shortening separation time, its characterized in that, includes one-level solid-liquid separation system, second grade solid-liquid separation system and auxiliary unit, the auxiliary unit is including adding the medicine unit, one-level solid-liquid separation system includes coagulation equipment, magnetic separator and magnetic particle separation equipment, coagulation equipment, magnetic separator and magnetic particle separation equipment connect gradually through the pipeline, add the medicine unit respectively with coagulation equipment with second grade solid-liquid separation system passes through the pipe connection, magnetic particle separation equipment with second grade solid-liquid separation system passes through the pipe connection, one-level solid-liquid separation system is used for carrying out preliminary solid-liquid separation to sewage, second grade solid-liquid separation system be used for with sludge that obtains is handled among the one-level solid-liquid separation system carries out dehydration.

2. The system of claim 1, wherein the medicated unit comprises a first and a second drug unit, the first and second drug units being connected to the coagulation device, respectively, the first and second drug units being for adding different drugs, respectively.

3. The system of claim 2, wherein the secondary solid-liquid separation system comprises a contact tank, a settling tank and a dehydrator, the contact tank is connected with the settling tank through a pipeline, the bottom of the settling tank is connected with the dehydrator through a pipeline, a pipeline mixer is arranged in the pipeline between the settling tank and the dehydrator, and the first medicament unit and the second medicament unit are respectively connected with the pipeline mixer.

4. The system of claim 3, wherein the auxiliary unit further comprises a washing unit and a recycling device, the washing unit is connected with the dehydrator through a pipeline, an input end of the magnetic particle separation device is connected with a first output end of the magnetic separator, an input end of the contact tank is connected with a first input end of the magnetic particle separation device, and the recycling device is connected with a second output end of the magnetic particle separation device.

5. The system as claimed in claim 4, wherein the contact tank is connected with an ozone inlet pipe, and a stirring device is arranged in the contact tank and used for stirring the contents so as to fully contact the muddy water in the contact tank with the ozone.

6. The system of claim 4, further comprising a mud storage silo and a water storage structure, wherein the output of the dewatering machine comprises an outlet conduit and a mud outlet conduit, and wherein the outlet conduit is connected to the water storage structure.

7. The system of claim 6, wherein the pipe between the settling tank and the dewatering machine is provided with a cutting device for cutting sludge, and the upper end of the settling tank is connected to the water storage structure through a pipe.

8. The system of claim 6, wherein a second output of the magnetic separator is connected to the water storage structure.

9. The system as claimed in claim 8, wherein the bottom of the mud storage bin is provided with a delivery pump, and the output end of the delivery pump is positioned at the discharge port of the mud storage bin.

10. System according to claim 4, characterized in that the recovery device is connected to the magnetic separator, the recovery device being provided with a supplementary conduit for adding magnetic particles.

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