CN216890588U

CN216890588U - Sludge high-pressure dewatering system

Info

Publication number: CN216890588U
Application number: CN202220187923.2U
Authority: CN
Inventors: 高艳龙; 冯卓; 陈宇; 武军波; 李小平; 张培龙
Original assignee: Taiyuan Runmin Environmental Protection Energy Saving Co ltd
Current assignee: Taiyuan Runmin Environmental Protection Energy Saving Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-07-05
Anticipated expiration: 2032-01-24

Abstract

The utility model belongs to the technical field of sludge dewatering in a sewage treatment process, and particularly relates to a sludge high-pressure dewatering system which solves the technical problems in the background technology. The sludge is treated and reduced remarkably, and the transportation cost is greatly reduced; the water content of the treated sludge is greatly reduced, the solid content is high, and the transportation is convenient; the sludge treatment effect is stable, and the dewatered sludge has hydrophobicity, is not reduced when meeting water and has no secondary pollution.

Description

Sludge high-pressure dewatering system

Technical Field

The utility model belongs to the technical field of sludge dewatering in a sewage treatment process, and particularly relates to a high-pressure sludge dewatering system.

Background

Along with the enlargement of the urban sewage treatment scale, the sludge is also produced in large quantity as solid waste for sewage treatment, the components of the sludge are complex, pathogenic microorganisms, parasitic ova and a large quantity of difficultly-degradable substances are contained, and if the treatment is improper, secondary pollution is easily caused to the environment, the treatment and disposal of the sludge become very urgent problems facing the environmental management in China. The dehydration is an important link of sludge treatment, and aims to remove most of water in the sludge, highly enrich solid, greatly reduce the volume of the sludge so as to save investment, improve the heat value of the sludge and save energy, and has important significance for the reduction and subsequent treatment of the sludge.

At present, the water content of sludge is reduced to 80% by adopting centrifugal dehydration, medium-low pressure filter pressing and other modes in urban sewage plants, and then landfill, incineration or comprehensive utilization are carried out. The higher moisture content not only results in high transportation cost, but also affects subsequent comprehensive utilization. Therefore, in order to achieve deep dewatering of sludge so that sludge treatment meets landfill standards, it is necessary to invent a dewatering system capable of reducing the water content of sludge.

Disclosure of Invention

The utility model aims to solve the technical problem of how to realize deep dehydration of sludge so that sludge treatment reaches landfill standard, and provides a sludge high-pressure dehydration system.

The technical means for solving the technical problems of the utility model is as follows: the utility model provides a mud high pressure dewatering system, including storing up the mud pit, still including folding the concentrated machine of spiral shell, sludge conditioning pond and filter pressing device, store up the mud pit and fold and be provided with the feeding screw pump that is used for transporting mud between the concentrated machine of spiral shell, it still is provided with the first automatic reagent feeding device who is used for adding cation PAM to fold the concentrated machine of spiral shell, the mud mouth that folds the concentrated machine of spiral shell is connected to the entry in sludge conditioning pond, sludge conditioning pond still is connected with the second automatic reagent feeding device who is used for throwing ferric chloride and quick lime, the mud mouth in sludge conditioning pond is connected to filter pressing device's mud mouth that advances, filter pressing device is high-pressure diaphragm filter press or superhigh pressure filter press.

The working process of the sludge high-pressure dehydration system provided by the utility model is as follows: firstly, sludge concentration: the sludge is lifted from the sludge storage tank to the spiral shell thickener by the feeding screw pump, the sludge is primarily concentrated and dewatered by the spiral shell thickener, meanwhile, the cationic PAM is added into the spiral shell thickener, and the sludge and the cationic PAM are fully stirred and mixed in the flocculation mixing tank to form alum floc; secondly, sludge precipitation: the sludge is primarily treated by the spiral thickener and then is conveyed to a sludge conditioning tank, powder materials such as ferric chloride, quicklime and the like are added into the sludge conditioning tank, and the sludge and a precipitation agent are stirred by an automatic stirring device, so that the flocculation effect of the sludge is enhanced, and the dehydration rate of the sludge is improved; thirdly, filter pressing of sludge: and lifting the sludge into a filter pressing device, after feeding is finished, injecting a high-pressure fluid medium between the filter plate and the diaphragm, and pressing the filter cake by the diaphragm so as to realize further dehydration of the filter cake.

Preferably, a plunger pump is arranged between the sludge outlet of the sludge conditioning tank and the sludge inlet of the filter pressing device. The plunger pump is used for lifting sludge, and is simple to operate.

Preferably, a sludge transport vehicle is arranged at a sludge outlet of the filter pressing device. The sludge transport vehicle is used for transporting the sludge filter cake to the next treatment site in time.

Preferably, the sludge conditioning pool is also connected with an automatic stirring device. The automatic stirring device is used for stirring the sludge and the precipitation medicament, so that the sludge and the precipitation medicament are mixed more uniformly.

The utility model has the beneficial effects that: 1. the sludge is treated and reduced in quantity, and the transportation cost is greatly reduced; 2. the water content of the treated sludge is greatly reduced, the solid content is high, and the sludge is convenient to transport; 3. the sludge treatment effect is stable, and the dewatered sludge has hydrophobicity, is not reduced when meeting water and has no secondary pollution; 4. the equipment forming the system is mature equipment, so that the universality is high; 5. the system adopts PLC full-automatic control, and the equipment is highly integrated and can be unattended.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of a high-pressure sludge dewatering system according to the present invention.

FIG. 2 is a process flow diagram of a high-pressure sludge dewatering system according to the present invention.

In the figure: 1. a mud storage pool; 2. a stack screw thickener; 3. a sludge conditioning tank; 4. a filter pressing device; 5. a feed screw pump; 6. a first automatic dosing device; 7. a second automatic dosing device; 8. a plunger pump; 9. an automatic stirring device; 10. a sludge transport vehicle.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a mud high pressure dewatering system, as shown in figure 1, including storing up mud pit 1, still including folding spiral shell concentrated machine 2, sludge conditioning tank 3 and filter pressing device 4, store up mud pit 1 and fold and be provided with the feeding screw pump 5 that is used for transporting mud between the spiral shell concentrated machine 2, it still is provided with the first automatic reagent feeding device 6 that is used for adding cation PAM to fold spiral shell concentrated machine 2, the mud outlet of folding spiral shell concentrated machine 2 is connected to the entry of sludge conditioning tank 3, sludge conditioning tank 3 still is connected with automatic agitating unit 9 and is used for throwing the second automatic reagent feeding device 7 of throwing ferric chloride and quick lime, the mud outlet of sludge conditioning tank 3 is connected to the mud inlet of filter pressing device 4 through plunger pump 8, filter pressing device 4 is high-pressure membrane filter press or superhigh pressure filter press, the mud outlet of filter pressing device 4 is provided with sludge transport vechicle 10. The filter pressing device 4 presses and dehydrates the sludge under the action of high pressure by depending on a layer of elastic membrane diaphragm plate between the filter plate and the filter cloth, so that the water content of the treated filter cake is greatly reduced.

As shown in FIG. 2, the working process of the high-pressure sludge dewatering system of the present invention is as follows:

firstly, sludge concentration: the sludge is lifted from the sludge storage tank 1 to the spiral shell thickener 2 by the feed screw pump 5, the sludge is primarily concentrated and dewatered by the spiral shell thickener 2, meanwhile, the cation PAM is added into the spiral shell thickener 2, and the sludge and the cation PAM are fully stirred and mixed in the flocculation mixing tank to form alum floc;

secondly, sludge precipitation: the sludge is primarily treated by the spiral thickener 2 and then is conveyed to the sludge conditioning tank 3, powder materials such as ferric chloride, quicklime and the like are added into the sludge conditioning tank 3, and the sludge and a precipitation agent are stirred by the automatic stirring device 9, so that the flocculation effect of the sludge is enhanced, and the dehydration rate of the sludge is improved;

thirdly, filter pressing of sludge: the sludge is lifted into the filter pressing device 4 through the plunger pump 8, after the feeding is finished, the high-pressure fluid medium is injected between the filter plate and the diaphragm, and the diaphragm presses the filter cake, so that the further dehydration of the filter cake is realized;

fourthly, transporting the sludge: the sludge filter cake is timely transported to the next treatment site by the sludge transport vehicle 10, and then the subsequent treatment such as landfill is carried out.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a mud high pressure dewatering system, including storing up mud pit (1), a serial communication port, still including folding spiral shell concentrated machine (2), sludge conditioning pond (3) and filter pressing device (4), it is provided with feeding screw pump (5) that are used for transporting mud to store up mud pit (1) and fold between spiral shell concentrated machine (2), it still is provided with first automatic reagent feeding device (6) that are used for adding cation PAM to fold spiral shell concentrated machine (2), the mud mouth that folds spiral shell concentrated machine (2) is connected to the entry of sludge conditioning pond (3), sludge conditioning pond (3) still are connected with second automatic reagent feeding device (7) that are used for throwing ferric chloride and quick lime, the mud mouth that goes out of sludge conditioning pond (3) is connected to the mud mouth that advances of filter pressing device (4), filter pressing device (4) are high-pressure membrane filter press or superhigh pressure filter.

2. The high-pressure sludge dewatering system according to claim 1, characterized in that a plunger pump (8) is arranged between the sludge outlet of the sludge conditioning tank (3) and the sludge inlet of the filter pressing device (4).

3. The high-pressure sludge dewatering system according to claim 1, characterized in that the sludge conditioning tank (3) is further connected with an automatic stirring device (9).

4. The high-pressure sludge dewatering system according to claim 1, characterized in that the sludge outlet of the filter pressing device (4) is provided with a sludge transport vehicle (10).