All-buried sewage treatment facility for standard effluent surface three-class water

Abstract

The invention relates to an all-buried sewage treatment facility for standard effluent surface three-class water, which comprises an all-buried structure and a sewage treatment system, the all-buried structure realizes land saving by optimizing spatial layout, and the sewage treatment system adopts an advanced sewage treatment process and a deep purification technology. And the effluent quality is ensured to reach the ground surface three-class water standard. The advanced sewage treatment process and the advanced purification technology are adopted, so that the effluent quality reaches the ground surface three-class water standard, and the high-standard water resource reutilization requirement is met.

Description

Technical Field

[0001] The present invention relates to the field of municipal environmental protection, and in particular to a fully buried sewage treatment facility with an effluent standard of Class III surface water. Background Art

[0002] With the acceleration of urbanization and the continuous growth of population, sewage treatment issues have become increasingly prominent and have become a major factor restricting the sustainable development of cities. Traditional sewage treatment facilities have gradually exposed many limitations in meeting this challenge.

[0003] First, traditional sewage treatment facilities occupy a large area, which has become a bottleneck restricting their development in the context of increasingly scarce land resources. Traditional facilities are usually arranged above ground or semi-underground, requiring a large amount of land resources. This is particularly prominent in urban centers or areas with limited land resources.

[0004] Secondly, traditional wastewater treatment facilities have shortcomings in water reuse. The effluent quality of these facilities often only meets lower discharge standards, making it difficult to meet higher reuse requirements, such as Category III surface water. This limits water recycling and exacerbates water shortages.

[0005] Furthermore, traditional sewage treatment facilities may have a certain impact on the surrounding environment. During operation, they may produce pollutants such as odor and noise, negatively impacting the quality of life of surrounding residents and the ecological environment. Furthermore, traditional facilities consume a lot of energy, which is inconsistent with the trend of green and low-carbon development. Summary of the Invention

[0006] The present invention aims to overcome the defects of the existing technology and provide a fully buried sewage treatment facility with effluent standard Class III surface water, so as to solve the problems of traditional sewage treatment facilities such as large footprint, difficulty in water resource reuse, environmental impact and high energy consumption.

[0007] In order to solve the above-mentioned technical problems, the present invention is achieved as follows: A fully underground sewage treatment facility with effluent standard Class III surface water, characterized by comprising a fully underground structure and a sewage treatment system, wherein the fully underground structure saves land by optimizing the spatial layout, and the sewage treatment system adopts advanced sewage treatment technology and deep purification technology to ensure that the effluent water quality meets the Class III surface water standard.

[0008] The fully underground sewage treatment facility with a discharge standard of Class III surface water is characterized in that the fully underground structure adopts a spatial layout of at least two layers of the upper and lower boxes, and is constructed through the steps of pile foundation construction, enclosure structure construction, earth excavation, underground box construction, ground auxiliary structure construction and mechanical and electrical equipment installation, thereby achieving land savings of over 60%.

[0009] The fully buried sewage treatment facility with effluent standard Class III surface water is characterized in that the sewage treatment system includes a pretreatment area, a biological reaction tank, a secondary sedimentation tank, a flotation tank, an ozone catalytic oxidation tank and an ultrafiltration membrane process treatment unit, which effectively removes pollutants in the sewage through multi-stage treatment to ensure the effluent water quality.

[0010] The fully buried sewage treatment facility with effluent standard Class III surface water is characterized in that: the pretreatment area includes a coarse screen, a medium and fine screen and an aerated grit chamber, which are used to intercept and remove large particles of impurities and suspended matter in the sewage; the biological reaction tank adopts AAO and improved Bardenpho process, which is used to degrade pollutants in the water and remove nitrogen and phosphorus.

[0011] The fully buried sewage treatment facility with effluent standard Class III surface water is characterized in that: the secondary sedimentation tank is used to perform mud-water separation operations, and the separated sludge is transported to the sludge concentration room through the sludge pipe; the flotation tank and the ozone catalytic oxidation tank are used to remove suspended matter and non-biodegradable substances in the water again.

[0012] The fully buried sewage treatment facility with effluent standard Class III surface water is characterized in that the ultrafiltration membrane process treatment unit is used as a terminal treatment process to remove ionic pollutants in the water to ensure that the effluent water quality meets the Class III surface water standard.

[0013] The beneficial effects of the present invention are as follows: As can be seen from the above-mentioned technical solution, this application provides a fully underground sewage treatment facility with effluent standard Class III surface water. By adopting a fully underground design and optimizing the spatial layout of the upper and lower two-story (partially three-story) tank, the fully underground sewage treatment facility significantly reduces the ground floor space, achieving a land conservation rate of over 60%. This feature makes the facility more practical in the context of increasingly scarce land resources, especially in urban central areas or areas with limited land resources.

[0014] The fully underground sewage treatment facility integrates multiple purification technologies based on conventional sewage treatment processes to ensure that the effluent quality meets the Class III surface water standard. This standard is significantly higher than the effluent standards of traditional sewage treatment facilities and meets the water resource reuse needs in more areas, such as landscape water and irrigation.

[0015] The fully buried design effectively isolates the odor and noise generated during the sewage treatment process, minimizing the impact on the surrounding environment and residents. Furthermore, the roof of the facility can be greened or restored as urban green space, blending in with the surrounding environment and enhancing the urban landscape. Furthermore, this facility overcomes the issues of odor, noise pollution, and incompatibility with the natural landscape that plague traditional above-ground sewage treatment plants.

[0016] By optimizing process flows and employing energy-efficient sewage treatment equipment, fully underground sewage treatment facilities employ energy-saving measures during design and operation, effectively reducing overall energy consumption. This aligns with the green and low-carbon development trend, helping to reduce energy consumption and carbon emissions.

[0017] The fully underground sewage treatment facility not only achieves green and environmentally friendly construction, but also has practical significance and environmental protection promotion value. Its high efficiency, energy conservation, and environmental friendliness enable it to not only provide sewage treatment services but also bring additional positive impacts to society, such as enhancing the city's image and improving residents' quality of life. Therefore, the facility is expected to generate positive economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Figure 1 This is a sewage treatment flow chart. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection requested by this application. like Figure 1 Shown: A fully buried sewage treatment facility with effluent standard Class III surface water. Part 1: Carry out structure construction according to the design drawings; First, pile foundation construction was carried out to provide a stable foundation for the facility.

[0020] Then the underground continuous wall retaining structure was constructed to ensure safety during the construction process.

[0021] Then earth excavation was carried out to prepare for the construction of the underground box.

[0022] The construction of the underground box includes the construction of the bottom plate, the second-basement pool body, and the first-basement top plate, forming the main structure of the sewage treatment facility.

[0023] Subsequently, the construction of ground ancillary structures, such as management rooms and equipment rooms, was carried out.

[0024] Finally, the electromechanical equipment required for sewage treatment, such as pumps, fans, screen machines, etc., were installed and debugged to ensure the normal operation of each equipment.

[0025] Part II: Sewage treatment process commissioning; Sewage enters the pretreatment area through the water inlet main pipe, passes through the coarse screen to intercept larger suspended matter and impurities, then passes through the medium and fine screen to filter out fine impurities and suspended matter, and finally passes through the aerated grit chamber to accelerate the sedimentation of gravel, removing most of the large particles, entangled and abrasion impurities in the water; The treated water flows into the biological reaction tank, where AA0 (Anaerobic-Anoxic-Oxic) and modified Bardenpho process (the modified Bardenpho process is a high-efficiency biological denitrification and phosphorus removal process improved on the basis of the traditional Bardenpho process) are used to degrade pollutants in the water and remove nitrogen and phosphorus. The treated mixed liquor flows into the secondary sedimentation tank for mud-water separation, and the separated sludge is transported to the sludge concentration room through the sludge pipe; The separated water flows through the flotation tank and ozone catalytic oxidation tank to remove suspended solids and non-biodegradable substances in the water again; The ultrafiltration membrane process is used at the end to remove ionic pollutants in the water to meet the water quality requirements of Class III surface water.

[0026] Following completion, the fully underground sewage treatment facility began full operation. The treated sewage consistently meets Class III surface water standards and can be used for landscape and irrigation purposes in the new district. Furthermore, the facility's fully underground design effectively reduces odor and noise pollution, blending seamlessly with the surrounding environment and enhancing the new district's urban landscape.

[0027] The fully underground design significantly reduces the ground footprint, achieving a land conservation rate exceeding 60%. This advantage is particularly evident given the limited land resources in the new district, freeing up valuable land resources for its development. Through multiple purification technologies, the effluent quality meets the Class III surface water standard, meeting high water quality requirements. This not only provides the new district with high-quality recycled water resources, but also helps improve the water environment quality. The fully underground design effectively isolates the odor and noise generated during the sewage treatment process, reducing the impact on the surrounding environment and residents. During the facility design process, a focus was placed on optimizing energy consumption, employing highly efficient and energy-saving sewage treatment equipment and processes. This not only reduces the facility's operating costs but also helps reduce energy consumption and carbon emissions, in line with the trend of green and low-carbon development.

[0028] The fully buried sewage treatment facility not only achieves green and environmentally friendly construction, but also provides a sustainable sewage treatment solution for the new district. Its high efficiency, energy conservation, and environmental protection have brought significant economic and social benefits to the new district, helping to promote its sustainable development.

[0029] The above are only embodiments provided for this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A fully buried sewage treatment facility with effluent standard Class III surface water, characterized by: It includes a fully buried structure and a sewage treatment system. The fully buried structure saves land by optimizing the spatial layout. The sewage treatment system adopts advanced sewage treatment technology and deep purification technology to ensure that the effluent water quality meets the surface water category III standard.

2. The fully buried sewage treatment facility with effluent standard Class III surface water according to claim 1 is characterized by: The fully buried structure adopts a spatial layout of at least two layers of the upper and lower boxes, and is constructed through steps such as pile foundation construction, enclosure structure construction, earth excavation, underground box construction, ground auxiliary structure construction and mechanical and electrical equipment installation, achieving land savings of over 60%.

3. The fully buried sewage treatment facility with effluent standard Class III surface water according to claim 1 is characterized by: The sewage treatment system includes a pretreatment area, a biological reaction tank, a secondary sedimentation tank, a flotation tank, an ozone catalytic oxidation tank and an ultrafiltration membrane process treatment unit. Through multi-stage treatment, pollutants in the sewage are effectively removed to ensure the water quality of the effluent.

4. The fully buried sewage treatment facility with effluent standard Class III surface water according to claim 3 is characterized by: The pretreatment area includes a coarse screen, a medium and fine screen and an aerated grit chamber, which are used to intercept and remove large particles of impurities and suspended matter in the sewage; the biological reaction tank adopts AAO and improved Bardenpho process, which are used to degrade pollutants in the water and remove nitrogen and phosphorus.

5. The fully buried sewage treatment facility with effluent standard Class III surface water according to claim 3 is characterized by: The secondary sedimentation tank is used to perform mud-water separation operations, and the separated sludge is transported to the sludge concentration room through the sludge pipe; the flotation tank and the ozone catalytic oxidation tank are used to remove suspended matter and non-biodegradable substances in the water again.

6. The fully buried sewage treatment facility with effluent standard Class III surface water according to claim 3 is characterized by: The ultrafiltration membrane process treatment unit is used as a terminal treatment process to remove ionic pollutants in water and ensure that the effluent water quality meets the surface water category III standard.

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