Rural rainwater and sewage diversion integrated treatment device

Abstract

The utility model discloses a rural rainwater and sewage diversion integrated treatment device, which comprises an integrated diversion box, an integrated biological treatment unit and a backwashing filter system, and the diversion box is connected with the biological treatment unit and the filter system through pipelines. The integrated biological treatment unit comprises an aerobic digestion area, an anaerobic digestion area and a settling area, the backwashing filter system comprises a filter chamber for fixing a filter medium and a backwashing control device, and through rainwater and sewage diversion, the increase of treatment difficulty caused by mixing of rainwater and sewage is avoided, the pollution load on a water body is reduced, and the water environment quality is improved; research, development and application of the rural rainwater and sewage diversion integrated treatment device are of great significance in improving the rural domestic sewage treatment level and protecting the water environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to an integrated rural rainwater and sewage diversion treatment device. Background Art

[0002] The integrated rural rainwater and sewage diversion treatment device is proposed based on the challenges faced by sewage collection and treatment in rural areas. With the in-depth promotion of rural revitalization and the increasingly strict sewage discharge standards, higher requirements are put forward for rural domestic sewage treatment technologies. In rural areas, due to the scattered residence and the difficulty of centralized sewage collection, coupled with relatively backward economic conditions and technical forces, traditional sewage treatment methods can no longer meet the current needs. In addition, rural sewage contains high levels of nutrients such as nitrogen and phosphorus. If untreated or improperly treated, it will seriously pollute water bodies, leading to problems such as water eutrophication and water body blackening and odor. Moreover, sludge treatment is an important link in the sewage treatment process. Traditional sludge treatment devices have problems such as low treatment efficiency, high energy consumption, and complex operation. Summary of the Invention

[0003] To achieve the above object, the technical solution of the present invention is as follows: An integrated rural rainwater and sewage diversion treatment device, the device includes an integrated diversion box, an integrated biological treatment unit, and a backwashing filtration system. The diversion box is connected to the biological treatment unit and the filtration system through pipelines. The integrated biological treatment unit includes an aerobic digestion area, an anaerobic digestion area, and a precipitation area. The backwashing filtration system includes a filtration chamber for fixing the filtration medium and a backwashing control device.

[0004] Based on the above technical features, the integrated diversion box is used to separately collect and preliminarily treat rainwater and sewage; the integrated biological treatment unit includes aerobic digestion, anaerobic digestion, and precipitation functions; the backwashing filtration system is used to further purify rainwater; the aerobic digestion area is used for the biodegradation of organic matter; the anaerobic digestion area is used for the release of phosphorus and the preliminary decomposition of organic matter; the precipitation area is used for solid-liquid separation.

[0005] As an improvement of the present utility model, the device includes a sludge treatment system. The sludge treatment device includes a sludge receiving tank, a sludge conditioning unit, a mechanical dewatering unit, a sludge stabilization unit, and a sludge forming unit. The sludge receiving tank is connected to the sludge conditioning unit, the sludge conditioning unit is connected to the mechanical dewatering unit, and the mechanical dewatering unit is connected to the sludge stabilization unit.

[0006] Based on the above technical features, the sludge receiving tank is used to receive the raw sludge from the sewage treatment process; the sludge receiving tank receives the raw sludge from the sewage treatment plant. The bottom of the tank is designed with a discharge port, which is directly connected to the sludge conditioning unit through a pipeline to continuously or intermittently feed the sludge into the conditioning unit;

[0007] The sludge conditioning unit is used for the preliminary conditioning of sludge, including dehydration and chemical treatment. The sludge treated by the conditioning unit has improved dewatering performance and is then transported to the mechanical dewatering unit through pipelines or conveying equipment (such as sludge pumps). The conditioning unit may include chemical conditioning, heat treatment, or mechanical crushing to improve the dewatering efficiency of the sludge;

[0008] The mechanical dewatering unit is used to further reduce the water content in the sludge. The mechanical dewatering unit (such as a centrifuge, belt filter press, or plate and frame filter press) further reduces the water content of the sludge. The dewatered sludge is usually sent to the sludge stabilization unit through a conveyor belt or screw conveyor for the next step of treatment;

[0009] The sludge stabilization unit is used to stabilize the sludge by biological or chemical methods. The sludge stabilization unit (such as an aerobic digestion tank or anaerobic digester) reduces the organic matter content in the sludge through biological processes and kills pathogens. The stabilized sludge may need to be sent to the forming unit again through pumps or other conveying equipment;

[0010] The sludge forming unit is used to process the stabilized sludge into a form suitable for subsequent treatment or disposal. The sludge forming unit (such as a granulator or briquetting machine) processes the sludge into a form suitable for final disposal or utilization (such as granules, cakes, or blocks). The formed sludge can be directly bagged, boxed, or loaded into a container for transportation.

[0011] As an improvement of the present utility model, the sludge receiving tank is provided with an adjustable capacity structure, and the adjustable capacity structure includes a variable-diameter inlet and a screw conveyor. The variable-diameter inlet includes a rotating weir plate.

[0012] Based on the above technical features, the mechanical dewatering unit adopts screw pressing technology to improve the dewatering efficiency and reduce energy consumption.

[0013] As an improvement of the present utility model, the sludge stabilization unit includes an aerobic digestion tank, and the aerobic digestion tank is provided with a ventilation system.

[0014] Based on the above technical features, the sludge stabilization unit includes an aerobic digestion tank, and the tank body is designed with an optimized ventilation system to improve the decomposition rate of organic matter. The ventilation system includes aeration equipment, an air supply system, a gas distribution system, a control system, and an exhaust system. The aeration equipment is used to evenly distribute air (oxygen) throughout the volume of the digestion tank. It can be a microporous aerator, an aeration disc, or an aeration pipe, etc.; it includes an air compressor or a blower, which is responsible for compressing and transporting air to the aeration equipment. The air supply system needs to be able to adjust the air flow rate to adapt to different aerobic digestion stages and treatment requirements.

[0015] As an improvement of the present utility model, the sludge forming unit includes a compression molding machine.

[0016] Based on the above technical features, the sludge forming unit includes a compression molding machine, which can form the sludge into particles or cakes with unified specifications, facilitating transportation and final disposal.

[0017] As an improvement of the present utility model, the sludge treatment device further includes a sludge thermal drying unit.

[0018] Based on the above technical features, the sludge treatment device further includes a sludge thermal drying unit for heat-treating the dewatered sludge to further reduce the moisture content of the sludge and reduce the volume. The sludge thermal drying unit includes a drying chamber and a heating device.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the integrated treatment device, efficient treatment of sewage can be achieved, effectively removing suspended solids in the sewage; The integrated device usually has a smaller floor area and is easy to install and maintain, which helps to reduce construction and operation costs; By separating rainwater and sewage, the increase in treatment difficulty caused by the mixing of rainwater and sewage is avoided, the pollution load on water bodies is reduced, and the water environment quality is improved; The research and application of the rural rainwater-sewage separation integrated treatment device are of great significance for improving the rural domestic sewage treatment level and protecting the water environment. Description of the Drawings

[0020] Figure 1 Structural schematic diagram of the integrated treatment device in this embodiment Figure 1 ;

[0021] Figure 2 Structural schematic diagram of the integrated treatment device in this embodiment Figure 2 .

[0022] List of drawing reference signs: 1 - integrated flow splitting box, 2 - integrated biological treatment unit, 3 - backwashing filtration system, 4 - aerobic digestion area, 5 - anaerobic digestion area, 6 - sedimentation area, 7 - filtration chamber, 8 - sludge receiving tank, 9 - sludge conditioning unit, 10 - mechanical dewatering unit, 11 - sludge stabilization unit, 12 - sludge forming unit, 13 - rotary weir plate, 14 - screw conveyor, 15 - aeration equipment, 16 - air supply system, 17 - gas distribution system, 18 - exhaust system, 19 - sludge thermal drying unit. Detailed Embodiments

[0023] The following further clarifies the present invention in conjunction with the drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0024] This embodiment is an integrated rural rainwater and sewage diversion treatment device. The device includes an integrated diversion box 1, an integrated biological treatment unit 2, and a backwash filtration system 3. The diversion box is connected to the biological treatment unit and the backwash filtration system 3 through pipelines. The integrated biological treatment unit 2 includes an aerobic digestion area 4, an anaerobic digestion area 5, and a sedimentation area 6. The backwash filtration system 3 includes a filtration chamber 7 for fixing the filtration medium and a backwash control device. The backwash control device typically includes a washing device and related controllers. The integrated diversion box 1 is used to collect and preliminarily treat rainwater and sewage separately; the integrated biological treatment unit 2 includes aerobic digestion, anaerobic digestion, and sedimentation functions; the backwash filtration system 3 is used to further purify rainwater; the aerobic digestion area 4 is used for the biodegradation of organic matter; the anaerobic digestion area 5 is used for the release of phosphorus and the preliminary decomposition of organic matter; the sedimentation area 6 is used for solid-liquid separation.

[0025] Further, the device includes a sludge treatment system. The sludge treatment device includes a sludge receiving tank 8, a sludge conditioning unit 9, a mechanical dewatering unit 10, a sludge stabilization unit 11, and a sludge forming unit 12. The sludge receiving tank 8 is connected to the sludge conditioning unit 9. The sludge conditioning unit 9 is connected to the mechanical dewatering unit 10. The mechanical dewatering unit 10 is connected to the sludge stabilization unit 11. The sludge receiving tank 8 is used to receive the raw sludge from the sewage treatment process; the sludge receiving tank 8 receives the raw sludge from the sewage treatment plant. The bottom of the tank is designed with a discharge port, which is directly connected to the sludge conditioning unit 9 through a pipeline to continuously or intermittently feed the sludge into the conditioning unit;

[0026] The sludge conditioning unit 9 is used to preliminarily condition the sludge, including dehydration and chemical treatment; the sludge treated by the conditioning unit has improved dewatering performance, and at this time, it is transported to the mechanical dewatering unit 10 through a pipeline or a conveying device (such as a sludge pump). The conditioning unit may include chemical conditioning, heat treatment, or mechanical crushing to improve the dewatering efficiency of the sludge;

[0027] The mechanical dewatering unit 10 is used to further reduce the moisture content in the sludge; the mechanical dewatering unit 10 (such as a centrifuge, a belt filter press, or a plate and frame filter press) further reduces the moisture content of the sludge. The dewatered sludge is usually transported to the sludge stabilization unit 11 through a conveyor belt or a screw conveyor for the next step of treatment;

[0028] The sludge stabilization unit 11 is used to stabilize the sludge by biological or chemical methods; the sludge stabilization unit 11 (such as an aerobic digestion tank or an anaerobic digestion pond) reduces the organic matter content in the sludge through a biological process and kills pathogens. The stabilized sludge may need to be fed into the forming unit again through a pump or other conveying devices;

[0029] The sludge forming unit 12 is used to process the stabilized sludge into a form suitable for subsequent treatment or disposal; the sludge forming unit 12 (such as a granulator or briquetting machine) processes the sludge into a form suitable for final disposal or utilization (such as granules, cakes or blocks). The formed sludge can be directly bagged, boxed or loaded into a container for transportation.

[0030] Furthermore, the sludge receiving tank 8 is provided with an adjustable capacity structure, and the adjustable capacity structure includes a variable-diameter inlet and a screw conveyor 14. The variable-diameter inlet is a rotary weir plate 13. The mechanical dewatering unit 10 adopts a screw pressing technology to improve the dewatering efficiency and reduce energy consumption.

[0031] Furthermore, the sludge stabilization unit 11 includes an aerobic digestion tank, and the aerobic digestion tank is provided with a ventilation system. The sludge stabilization unit 11 includes an aerobic digestion tank, and the tank body is designed with an optimized ventilation system to improve the decomposition rate of organic matter. The ventilation system includes an aeration device 15, an air supply system 16, a gas distribution system 17, a control system and an exhaust system 18. The aeration device 15 is used to evenly distribute air (oxygen) throughout the volume of the digestion tank. It can be a microporous aerator, an aeration disc or an aeration pipe, etc.; it includes an air compressor or a blower, which is responsible for compressing and transporting air to the aeration device 15. The air supply system 16 needs to be able to adjust the air flow rate to adapt to different aerobic digestion stages and treatment requirements.

[0032] Furthermore, the sludge forming unit 12 includes a compression molding machine. The sludge forming unit 12 includes a compression molding machine, which can form the sludge into granules or cakes with uniform specifications, facilitating transportation and final disposal.

[0033] Furthermore, the sludge treatment device also includes a sludge thermal drying unit 19. The sludge treatment device also includes a sludge thermal drying unit 19, which is used to heat-treat the dewatered sludge to further reduce the moisture content of the sludge and reduce the volume. The sludge thermal drying unit 19 includes a drying chamber and a heating device.

[0034] It should be noted that the above content only illustrates the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. For those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements all fall within the protection scope of the claims of the present invention.

Claims

1. An integrated treatment device for rural rainwater and sewage diversion, characterized in that, The device includes an integrated flow splitting box (1), an integrated biological treatment unit (2), and a backwashing filtration system (3). The flow splitting box is connected to the integrated biological treatment unit (2) and the backwashing filtration system (3) through pipelines. The integrated biological treatment unit (2) includes an aerobic digestion area (4), an anaerobic digestion area (5), and a sedimentation area (6). The backwashing filtration system (3) includes a filtration chamber (7) for fixing the filtration medium and a backwashing control device.

2. The integrated rural rainwater and sewage diversion treatment device according to claim 1, wherein, The device includes a sludge treatment system. The sludge treatment system includes a sludge receiving tank (8), a sludge conditioning unit (9), a mechanical dewatering unit (10), a sludge stabilization unit (11), and a sludge forming unit (12). The sludge receiving tank (8) is connected to the sludge conditioning unit (9), the sludge conditioning unit (9) is connected to the mechanical dewatering unit (10), and the mechanical dewatering unit (10) is connected to the sludge stabilization unit (11).

3. The integrated rural rainwater and sewage diversion treatment device according to claim 1, characterized in that, The sludge receiving tank (8) is provided with an adjustable capacity structure. The adjustable capacity structure includes a variable diameter inlet and a screw conveyor. The variable diameter inlet includes a rotating weir plate (13).

4. The integrated rural rainwater and sewage diversion treatment device according to claim 2, characterized in that, The sludge stabilization unit (11) includes an aerobic digestion tank, and the aerobic digestion tank is provided with a ventilation system.

5. The integrated rural rainwater and sewage diversion treatment device according to claim 2, characterized in that, The sludge forming unit (12) includes a compression molding machine.

6. The integrated rural rainwater and sewage diversion treatment device according to claim 2, characterized in that, The sludge treatment system further includes a sludge thermal drying unit (19).

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