In-situ reduction treatment system for sewer sludge

Abstract

The utility model provides an in-situ reduction treatment system for sewer sludge. Comprising a mobile platform, and a sludge suction system, a sludge precipitation system, a sludge screening system, a gravel grading and washing system, a sand-water separation system, a tail water storage system, a sludge dewatering system, a sludge drying system and a plurality of mobile storage boxes which are arranged on the mobile platform, connected in sequence and used for carrying out modular treatment on sludge, the movable platform is loaded with a power system for driving the movable platform to move and driving each treatment system to work; and the movable storage box is used for respectively collecting products of the sludge precipitation system, the sludge screening system, the gravel grading and washing system and the sand-water separation system. Due to the integrated module design, the integrated treatment process from sludge extraction to final products is realized, and the treatment efficiency is improved; due to the design of the mobile platform, the whole treatment system can directly reach a working site, the long-distance transportation requirement of the dredging sludge is reduced, and the transportation cost and the risk of secondary pollution are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of urban sludge treatment, in particular to an in-situ reduction treatment system for gully sludge. Background Technique

[0002] Drainage pipes are an important part of the urban drainage system. Some drainage pipes are severely silted up, resulting in full-pipe operation and low-speed operation of the drainage pipes, and low influent concentration in the sewage treatment plant.

[0003] Gully sludge refers to the sediment dredged from drainage pipes. The operation and maintenance of drainage pipes are related to the normal operation of the drainage system. The operation and maintenance of drainage pipes include: inspection and detection of pipe channels, dredging, transportation and disposal of sludge. At present, the methods of pipe dredging include manual dredging, which has high safety risks and low efficiency; or using a vacuum sewage suction truck for dredging, with high moisture content of the transported sludge, high cost, low efficiency, and easy to cause secondary pollution.

[0004] Most cities do not have centralized facilities and equipment for the treatment and disposal of gully sludge. Most of them are disposed of by long-distance landfill or piled up nearby in low-lying areas and then covered with soil for in-situ greening, resulting in a large amount of transportation costs and landfill costs. In some cities with centralized disposal centers, the untreated gully sludge needs to be transported over a long distance by closed transportation equipment, with high transportation costs and high risks of secondary pollution. Even in some cases, it needs to be first transported to an intermediate treatment site and then transported to the final disposal site for a second time. Content of the Utility Model

[0005] In view of the deficiencies in the prior art, the utility model provides an in-situ reduction treatment system for gully sludge. To achieve the above object, the utility model adopts the following technical solutions:

[0006] An in-situ reduction treatment system for gully sludge includes a mobile platform and a sludge suction system, a sludge precipitation system, a sludge screening system, a sand grading and washing system, a sand-water separation system, a tail water storage system, a sludge dewatering system, a sludge drying system and a number of mobile storage boxes which are sequentially connected and modularly process the sludge and are arranged on the mobile platform. The mobile platform is equipped with a power system for driving the movement of the mobile platform and the operation of each treatment system. The mobile storage boxes respectively collect the products of the sludge precipitation system, the sludge screening system, the sand grading and washing system and the sand-water separation system.

[0007] Furthermore, the sludge suction system includes a suction pipe and a submersible pump for sucking the sludge in the pipe into the sludge precipitation system.

[0008] Furthermore, the sludge sedimentation system includes a sludge storage tank. A protective grille is provided at the upper part of the sludge storage tank to separate large pieces of garbage for storage in the corresponding mobile storage box. The supernatant liquid of the upper layer of the sludge sedimentation system enters the tail water storage system, and the sludge enters the sludge screening system.

[0009] Furthermore, the sludge screening system includes a box-type screening device. A hanging grille is provided in the box-type screening device to separate the screening materials with a particle size of more than 10 mm for entry into the corresponding mobile storage box, and the screening materials enter the sand and gravel grading and washing system.

[0010] Furthermore, the sand and gravel grading and washing system includes a hydrocyclone desander to separate the sand and gravel with a particle size of 0.2 - 10 mm for entry into the corresponding mobile storage box. The hydrocyclone desander is provided with a spray head, and the spray head is connected to the supernatant liquid of the tail water storage system for washing the sand and gravel. The mud-water mixture enters the sand-water separation system.

[0011] Furthermore, the sand-water separation system includes a horizontal cylindrical separator. A cylindrical filter screen is arranged inside the horizontal cylindrical separator to separate fine sand from the mud using the filter screen. The fine sand enters the corresponding mobile storage box, and the separated mud sewage enters the tail water storage system.

[0012] Furthermore, the tail water storage system includes a sewage storage tank, a sewage pump, a tail water reuse pipeline, and a sewage drainage pipe. The liquid after the tail water precipitates is recharged into the nearby sewage inspection well and returns to the sewage pipe network, and the lower sludge is pumped and discharged into the sludge dewatering system.

[0013] Furthermore, the sludge dewatering system includes a sludge filter press to dehydrate the sludge so that the moisture content of the sludge is reduced to less than 60%, and the generated sewage is discharged into the tail water storage system through a sewage pipe.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Through the integrated module design, it can be quickly assembled and operated on-site, realizing the integrated full-process on-site treatment process from the extraction of sewer sludge to the final product, greatly improving the treatment efficiency;

[0016] 2. The design of the mobile platform enables the entire treatment system to directly reach the operation site, reducing the long-distance transportation requirement of sewer sludge, thereby reducing the transportation cost and the risk of secondary pollution;

[0017] 3. The integrated in-situ treatment reduces the possibility of running, leaking, and spilling during the direct transportation of sewer sludge, avoiding the occurrence of secondary environmental pollution. After the in-situ grading treatment of sewer sludge, the impact on the environment can be reduced;

[0018] 4. Fully automated operation reduces the need for manual intervention, lowers the requirements for operators and safety risks. The mobile and integrated design reduces the floor area of treatment facilities, making it suitable for the limited space conditions in cities and reducing the coordination of urban land use.

[0019] 5. Through on-site in-situ treatment, multiple transfers are avoided, reducing additional input of human and material resources, as well as transfer energy consumption and overall treatment costs.

[0020] 6. Through in-situ hierarchical treatment of sewer sludge, separation of sand and gravel, dried sludge, and large pieces of materials is achieved, providing the possibility for the resource utilization of sand and gravel and dried sludge, and realizing in-situ pollution reduction and carbon reduction of sewer sludge. Description of the Drawings

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0022] Figure 1 It is the process flow chart of the embodiment of the present utility model.

[0023] In the above-mentioned drawings: mobile platform 1, power system 2, sludge suction system 3, sludge precipitation system 4, sludge screening system 5, sand and gravel grading and washing system 6, sand and water separation system 7, tail water storage system 8, sludge dewatering system 9, sludge drying system 10, mobile storage box 11. Detailed Embodiment

[0024] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.

[0025] Please refer to Figure 1 As shown, a sewer sludge in-situ reduction treatment system includes a mobile platform 1 and a sludge suction system 3, a sludge precipitation system 4, a sludge screening system 5, a sand and gravel grading and washing system 6, a sand and water separation system 7, a tail water storage system 8, a sludge dewatering system 9, a sludge drying system 10, and several mobile storage boxes 11 that are sequentially connected and modularly treat sludge, which are arranged on the mobile platform 1. The mobile platform 1 is equipped with a power system 2 that drives the movement of the mobile platform 1 and the operation of each treatment system. The mobile storage boxes 11 respectively collect the outputs of the sludge precipitation system 4, the sludge screening system 5, the sand and gravel grading and washing system 6, and the sand and water separation system 7.

[0026] The technical principle of this system is based on an integrated module design. It integrates multiple steps of sludge treatment (such as suction, sedimentation, screening, sand and gravel grading and washing, sand and water separation, etc.) on a mobile platform 1, forming a continuous and efficient treatment process. In this way, the sewer sludge can be quickly treated in-situ, significantly reducing the volume and water content of the sludge, while realizing the recycling of useful substances such as sand and gravel. The power system 2 on the mobile platform 1 not only provides the driving force required for movement, but also provides the necessary energy support for the entire treatment system, ensuring the automation and efficient operation of the whole process. This design effectively reduces the transportation cost and the risk of secondary pollution, improves the resource utilization efficiency, and simplifies the operation process.

[0027] In this embodiment, specifically, the sludge suction system 3 includes a suction pipe and a submersible pump, which are used to suck the sludge in the pipeline into the sludge sedimentation system 4. Using conventional methods for sludge suction saves costs.

[0028] In this embodiment, specifically, the sludge sedimentation system 4 includes a sludge storage tank. A protective grille is arranged on the upper part of the sludge storage tank to separate large pieces of garbage for storage in the corresponding mobile storage box 11. The supernatant of the sludge sedimentation system 4 enters the tail water storage system 8, and the sludge enters the sludge screening system 5. Recycling the supernatant of the sludge sedimentation system 4 does not require the use of external water sources, saves costs, and is more environmentally friendly.

[0029] In this embodiment, specifically, the sludge screening system 5 includes a box-type screening device. The box-type screening device is provided with a suspended grille to separate the screening materials with a particle size of more than 10 mm to enter the corresponding mobile storage box 11, and the screening materials enter the sand and gravel grading and washing system 6.

[0030] In this embodiment, specifically, the sand and gravel grading and washing system 6 includes a hydrocyclone desander, which is used to separate the sand and gravel with a particle size of 0.2 - 10 mm into the corresponding mobile storage box 11. The hydrocyclone desander is provided with a spray head, and the spray head is connected to the supernatant of the tail water storage system 8 for washing the sand and gravel. The mud-water mixture enters the sand and water separation system 7. Utilizing the supernatant of the tail water storage system 8 is energy-saving and environmentally friendly.

[0031] In this embodiment, specifically, the sand and water separation system 7 includes a horizontal cylindrical high-efficiency separator. A cylindrical filter screen is arranged inside the horizontal high-efficiency separator. The filter screen is used to separate fine sand from the mud. The fine sand enters the corresponding mobile storage box 11, and the separated mud sewage enters the tail water storage system 8.

[0032] In this embodiment, specifically, the tail water storage system 8 includes a sewage storage tank, a sewage pump, a tail water reuse pipeline, and a sewage drainage pipe. After the tail water is precipitated, the liquid is recharged into the nearby sewage inspection well and returns to the sewage pipe network. The sludge at the lower part is pumped and discharged into the sludge dewatering system 9.

[0033] In this embodiment, specifically, the sludge dewatering system 9 includes a sludge filter press to dehydrate the sludge. The moisture content of the sludge is reduced to less than 60%. The generated sewage is discharged into the tail water storage system 8 through a sewage pipe.

[0034] The power system includes a photovoltaic power generation system and an automatic control system. The photovoltaic power generation system mainly includes modular photovoltaic panels mounted on a mobile platform, and fixed brackets are arranged around the mobile platform to provide electrical energy for the entire system. The automatic control system includes sensors, actuators, and controllers, and mainly controls the start and stop of the equipment of each processing module on site, such as submersible pumps, spraying devices, sewage pumps, sand removal devices, sludge filter presses, etc.; controls the power system, such as photovoltaic power generation and power supply for each processing module; controls the on-site video monitoring system.

[0035] The in-situ reduction treatment of the sewer sludge effectively separates sundries, garbage, and sand and gravel. The separated garbage enters the domestic waste and construction waste disposal systems respectively; the separated sand and gravel can be directly used as building materials for resource utilization nearby; the separation of sand and gravel from the sludge and the in-situ dehydration treatment of the sludge effectively achieve the in-situ reduction of the sludge, reduce carbon emissions during the transportation process, realize the resource utilization of the dried sludge products, and reduce the energy consumption and cost of transportation; the separation of mud and water is realized. Part of the tail water can be used for washing sand and gravel, and the excess directly enters the sewage pipe network, reducing the total amount of sludge transportation; on the one hand, the power system uses photovoltaic power generation to provide electrical energy for each system, reducing energy consumption, and on the other hand, uses automatic control to provide automated control for each system, realizing intelligent operation and improving work efficiency; the entire processing system realizes intelligence, high efficiency, and low carbon, reducing transportation costs and environmental risks of secondary transportation.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A ditch sludge in-situ reduction treatment system, characterized in that: It includes a mobile platform and a sludge suction system, a sludge sedimentation system, a sludge screening system, a sand and gravel grading and washing system, a sand and water separation system, a tail water storage system, a sludge dewatering system, a sludge drying system and a plurality of mobile storage boxes which are connected in sequence and modularly process the sludge on the mobile platform. The mobile platform is equipped with a power system for driving the mobile platform to move and the various processing systems to work. The mobile storage boxes respectively collect the outputs of the sludge sedimentation system, the sludge screening system, the sand and gravel grading and washing system, and the sand and water separation system.

2. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sludge suction system comprises a suction pipe and a submersible pump, which are used to suck the sludge in the pipeline into the sludge sedimentation system.

3. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sludge sedimentation system comprises a sludge storage tank, and a protective grille is arranged on the upper part of the sludge storage tank for separating large pieces of garbage to be stored in a corresponding mobile storage box. The upper clear liquid of the sludge sedimentation system enters the tail water storage system, and the sludge enters the sludge screening system.

4. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sludge screening system includes a box-type screening device, which is provided with a suspended grid net for separating the screening materials with a particle size of more than 10 mm to enter the corresponding mobile storage box, and the screening materials enter the sand and gravel classification and washing system.

5. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sand and gravel grading and washing system includes a cyclone sand removal device, which is used to separate sand and gravel with a particle size of 0.2~10mm and enter the corresponding mobile storage box. The cyclone sand removal device is provided with a spray head, which is connected to the upper clear liquid of the tail water storage system for washing sand and gravel. The mud and water mixture enters the sand and water separation system.

6. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sand-water separation system comprises a horizontal cylindrical separator, in which a cylindrical filter screen is arranged, and the filter screen is used to separate fine sand and mud. The fine sand enters a corresponding mobile storage box, and the separated mud sewage enters a tailwater storage system.

7. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The tail water storage system includes a sewage storage tank, a sewage pump, a tail water reuse pipe, and a sewage drainage pipe. After the tail water settles, the liquid is re-injected into the nearest sewage inspection well and returned to the sewage network. The lower sludge is pumped out and enters the sludge dewatering system.

8. The in-situ ditch sludge reduction treatment system according to claim 1 is characterized by: The sludge dewatering system includes a sludge filter press, which dewaters the sludge to reduce the moisture content of the sludge to below 60%, and the generated sewage is discharged into the tail water storage system through a sewage pipe.

Images