An integrated treatment device for rural sewage without power

Abstract

The present invention discloses a self-powered integrated rural sewage treatment device. It includes a swirl anaerobic pond; the influent of the swirl anaerobic pond enters along the upper tangent direction, and the effluent flows out along the lower tangent direction. A sludge digestion pit is provided at the bottom of the swirl anaerobic pond, and the top is a hardened roof plate. An effluent weir is opened on one side close to the ecological purification layer; on one side of the effluent weir, an ecological purification layer, an aerobic layer, an anoxic layer and a sump are arranged in sequence from top to bottom. The aerobic layer is above the water surface line of the sump; the anoxic layer is below the water surface line of the sump; a ventilation tower is arranged in the middle of the sump and penetrates upward through the ecological purification layer, the aerobic layer and the anoxic layer. During the process of realizing sewage purification, the present invention has no electrical equipment, does not consume energy, has simple operation and management, can achieve "idiot-proof" operation, and is suitable for sewage treatment in mountainous rural areas with large terrain drops and backward economic development.

Description

Technical Field

[0001] The present invention relates to the field of rural sewage treatment, and specifically to a non-powered integrated rural sewage treatment device. Background Art

[0002] Although the treatment of rural domestic sewage in China has received strong support from national policies and shows a good development trend, the level of sewage treatment in rural areas is still very backward compared with that in urban areas. Especially in remote mountainous areas with underdeveloped economies, domestic sewage is still directly discharged. Existing sewage treatment equipment also has the disadvantages of complex management and high operation costs, lacking certain applicability in rural areas, resulting in some sewage treatment facilities being idle. Starting from the actual situation in rural areas and fully considering the economic situation in rural areas, the present invention has developed a non-powered rural sewage treatment device, which simplifies the operation management of the integrated equipment, enhances practicability, reduces the idle rate, and is an urgent need to accelerate the promotion of rural domestic sewage treatment work and realize the rural revitalization strategy. Summary of the Invention

[0003] To overcome the above defects, the present invention provides a non-powered integrated rural sewage treatment device to solve the problems of complex operation management and high operation costs existing in current rural sewage treatment devices, and is applicable to the sewage treatment in mountainous rural areas with large terrain drops and underdeveloped economies.

[0004] To achieve the above object, a non-powered integrated rural sewage treatment device of the present invention includes a swirl anaerobic pond; the influent of the swirl anaerobic pond enters along the upper tangent direction, and the effluent flows out along the lower tangent direction. A sludge digestion pit is provided at the bottom of the swirl anaerobic pond, and the top is a hardened roof. An effluent weir is opened on one side close to the ecological purification layer.

[0005] On one side of the effluent weir, an ecological purification layer, an aerobic layer, an anoxic layer and a sump are arranged in sequence from top to bottom. The aerobic layer is above the water surface line of the sump; the anoxic layer is below the water surface line of the sump.

[0006] A ventilation tower is arranged in the middle of the sump, passing through the ecological purification layer, the aerobic layer and the anoxic layer upwards.

[0007] Further, the ventilation tower is a hyperbolic ventilation tower.

[0008] Further, a non-powered fan is arranged on the ventilation tower.

[0009] Further, a number of downwardly arranged air inlet corridors are arranged at intervals on the periphery of the ecological purification layer.

[0010] Further, louvers are arranged on the side wall of the air inlet corridor corresponding to the aerobic layer.

[0011] Further, a blower fan is provided at the opening above the air inlet corridor.

[0012] Further, a wind-driven fan is integrally provided on the blower fan, and the wind-driven fan drives the blower fan to blow air into the air inlet corridor under the action of wind.

[0013] Further, a water seal well communicating with the sump is provided downward in the air inlet corridor.

[0014] Further, the bottom plate of the sump is a structure inclined from the periphery to the center, and a sediment pit is provided at the center of the sump.

[0015] Further, the ecological purification layer is composed of a sand filtration layer and green vegetation above it; the sand filtration layer should be composed of multiple layers of sand and gravel, and the particle size of the upper layer of sand and gravel is larger than that of the lower layer in adjacent two layers.

[0016] In the present invention, in remote mountainous areas with a large terrain drop, the kinetic energy of the incoming water can provide a swirling force for the swirling anaerobic pond. Large particulate impurities in the sewage sink to the sludge digestion pit under the action of centrifugal force and gravity, and sludge digestion reaction is carried out to achieve sludge reduction. The supernatant flows into the ecological purification layer through the effluent weir. The ecological purification layer is composed of a sand filtration layer and green vegetation above it, and it has a certain slope. The incoming sewage will form a water film and be evenly distributed on the sand filtration layer. The plants in the ecological purification layer should have well-developed roots, good removal effects on pollutants such as nitrogen and phosphorus, the ability to resist freezing and pests and diseases, certain economic value and landscape beautification effects, and be easy to manage green plants. The oxygen generated by the photosynthesis of the green plants is dissolved into the sewage through the atmospheric reoxygenation effect. The sand filtration layer can further intercept the suspended solids in the sewage to avoid blocking the subsequent treatment units by excessive suspended solids in the sewage. The green vegetation should be disposed regularly, and the sand filter material should be replaced regularly according to the blockage situation of the sand filtration layer. In the process of realizing sewage purification, there is no electrical equipment, no energy consumption, simple operation and management, and "fool-proof" operation can be realized, which is suitable for rural sewage treatment in mountainous areas with a large terrain drop and backward economic development. Description of the Drawings

[0017] Figure 1 It is the plan view of the non-powered rural sewage treatment device;

[0018] Figure 2 It is the 1-1 plan view of the non-powered rural sewage treatment device;

[0019] Figure 3 It is the 2-2 plan view of the non-powered rural sewage treatment device.

[0020] Drive fan 1; Drum fan 2; Ecological purification layer 3; Aerobic layer 4; Anoxic layer 5; Unpowered fan 6; Hyperbolic ventilation tower 7; Water seal well 8; Sump 9; Sludge digestion pit 10; Swirl anaerobic pond 11; Green vegetation 12; Inlet air corridor 13; Louver 14; Inlet pipe 15; Outlet pipe 16; Rain shield 17; Linkage shaft 18; Outlet weir 19; Inlet air duct 20; Sludge discharge pipe 21; Sedimentation pit 22. Detailed implementation manner

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] An embodiment of the present invention includes a swirl anaerobic pond 11; the inlet of the swirl anaerobic pond enters along the upper tangent direction, and the outlet flows out along the lower tangent direction. A sludge digestion pit 10 is provided at the bottom of the swirl anaerobic pond, and the top is a hardened roof. An outlet weir 19 is opened on one side close to the ecological purification layer;

[0026] On one side of the outlet weir, an ecological purification layer 3, an aerobic layer 4, an anoxic layer 5, and a sump 9 are arranged in sequence from top to bottom. The aerobic layer is above the water level line of the sump; the anoxic layer is below the water level line of the sump;

[0027] A ventilation tower 7 is arranged in the middle of the sump and penetrates through the ecological purification layer, the aerobic layer, and the anoxic layer upward.

[0028] The working process of the present invention is as follows: The domestic sewage discharged by mountain farmers is collected and then discharged into the swirl anaerobic tank 11 through the water inlet pipe 15. Under the action of centrifugal force and gravity, the large-particle impurities in the sewage settle to the sludge digestion pit 10 for sludge digestion to achieve sludge reduction.

[0029] Furthermore, the supernatant after being treated by the swirl anaerobic tank 11 flows into the ecological purification layer 3 through the weir 19. The ecological purification layer 3 is composed of a sand filtration layer 23 and the green vegetation 12 on its upper part. It has a certain slope, and the inflowing sewage will form a water film and be evenly distributed on the sand filtration layer 23. The oxygen generated by the photosynthesis of the green plants 12 is dissolved into the sewage through the atmosphere reoxygenation effect. The sand filtration layer 23 can further intercept the suspended solids in the sewage to prevent the subsequent treatment units from being blocked by excessive suspended solids in the sewage.

[0030] Furthermore, the lower part of the ecological purification layer 3 where the sewage enters is the aerobic layer 4, which makes full contact with the biofilm on the packing suspended in the aerobic layer 4 to achieve the degradation of BOD. The designers of the packing type can select according to the actual situation, but it should have a certain structural strength and be able to splash the water droplets falling from the ecological purification layer or make the water form a thin film flow. The rich wind energy in the mountain area provides fresh air for the aerobic layer. This integrated device can be designed as buried type or above-ground type according to the actual engineering needs. When the device is designed as buried type, the oxygen in the aerobic layer 4 not only comes from the photosynthesis of the green vegetation 12, but also depends on the fresh air continuously blown into the air inlet corridor 13 by the driving fan 1 driving the blower fan 2 by the wind force. The installation height of the driving fan should be determined according to the prevailing wind direction and wind speed in summer in the local area. When it is designed as above-ground type, the air inlet cylinder 20, the driving fan 1 and the blower fan 2 can be cancelled, and the fresh air is supplemented through the louvers 14 on the outer side of the aerobic layer 4. The fresh air can make full contact with the sewage in the aerobic layer, increasing the dissolved oxygen in the sewage. The sewage can also make full contact with the aerobic biofilm on the packing, increasing the mass transfer efficiency and improving the degradation efficiency of BOD in the sewage. The carbon dioxide generated by the BOD degradation and the waste gas after being utilized by the aerobic microorganisms are discharged into the hyperbolic ventilation tower 7 arranged in the center together, and are quickly discharged into the atmosphere under the suction of the non-powered fan 6 at the top of the hyperbolic ventilation tower 7.

[0031] Furthermore, the sewage after being treated by the aerobic layer 4 enters the anoxic layer 5. The packing is suspended in the anoxic layer 5 and submerged in the sewage in the sump 9. The bottom plate of the sump 9 is a structure inclined from the periphery to the center, and a sedimentation pit 22 is arranged in the center to collect the biofilm peeled off from the aerobic layer 4 and the anoxic layer 5. Water seal wells 8 are arranged around the sump 9, which can ensure that the anoxic zone 5 is always submerged in the sewage treated by the aerobic layer 4 to isolate the atmosphere and ensure an anoxic environment, increasing the contact efficiency between the biofilm and the sewage to achieve deep denitrification. The sewage after deep denitrification is discharged into the water body through the drain pipe 16 arranged on the water seal well 8.

[0032] Further, when there is too much sludge in the sediment pit 22 at the bottom of the drainage tank and the sludge digestion pit, the sludge discharge pipe 21 can be connected to a manure suction truck for sludge discharge, and the sludge discharge period can be determined according to the operation conditions. In addition, the green vegetation 12 should be disposed of regularly, and the sand filter material should be replaced regularly according to the clogging condition of the sand filter layer 23. The sand filter layer 23 is made of multiple layers of gravel with different particle sizes, and the particle size of the upper layer of gravel is larger than that of the lower layer.

[0033] In the description of this specification, the specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An integrated treatment device for rural sewage without power, characterized in that: It includes a swirl anaerobic pond; the influent of the swirl anaerobic pond enters along the upper tangent direction, and the effluent flows out along the lower tangent direction. A sludge digestion pit is provided at the bottom of the swirl anaerobic pond, and the top is a hardened roof. An effluent weir is opened on one side close to the ecological purification layer. An ecological purification layer, an aerobic layer, an anoxic layer and a sump are sequentially arranged from top to bottom on one side of the effluent weir. The aerobic layer is above the water level line of the sump; the anoxic layer is below the water level line of the sump. A ventilation tower is arranged upward through the ecological purification layer and the aerobic layer in the middle of the sump; the ventilation tower is a hyperbolic ventilation tower. A number of downward air inlet corridors are arranged at intervals on the periphery of the ecological purification layer. A blower fan is arranged at the opening above the air inlet corridor; a water seal well communicating with the sump is arranged downward in the air inlet corridor; louvers are arranged on the side wall of the air inlet corridor corresponding to the aerobic layer.

2. The integrated non-powered rural sewage treatment device according to claim 1, characterized in that: A non-powered fan is arranged on the ventilation tower.

3. The integrated non-powered rural sewage treatment device according to claim 1, characterized in that: The bottom plate of the sump is a structure inclined from the periphery to the center, and a sedimentation pit is arranged at the center of the sump.

4. The integrated rural sewage treatment device without power according to claim 1, characterized in that: The ecological purification layer is composed of a sand filtration layer and the green vegetation above it; the sand filtration layer should be composed of multiple layers of sand and gravel, and the particle size of the upper layer of sand and gravel is larger than that of the lower layer in adjacent two layers.

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