Unpowered sewage treatment equipment

Abstract

The utility model provides unpowered sewage treatment equipment which comprises an equipment shell, a water volume adjusting tank arranged in the equipment shell, a filter layer arranged below the water volume adjusting tank, a water inlet pipe communicated with the water volume adjusting tank and a water outlet pipe communicated with the equipment shell, and the joint of the water outlet pipe and the equipment shell is positioned below the filter layer; an inverted sleeve is fixedly arranged in the water quantity adjusting tank, a siphon is fixedly arranged in the sleeve, the bottom of the siphon is communicated with a water distribution pipe, and the water distribution pipe is located above the filter layer; the upper end part of the air inlet pipe is communicated with the outside, the upper end part of the air exhaust pipe is communicated with the outside, the lower end part of the air inlet pipe is communicated with an aeration pipe, the aeration pipe is positioned in the filter layer, the upper end part of the air exhaust pipe is provided with an unpowered fan, the lower end part of the air exhaust pipe is communicated with the equipment shell, and the utilization rate of the filter material area is improved while the water distribution uniformity is improved.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to a non-powered sewage treatment device. Background Art

[0002] Residents in rural areas primarily live in scattered communities, making sewage collection difficult and the drainage network inadequate. For small-scale domestic sewage discharges requiring on-site treatment, such as in rural areas, farmhouses, villas, and hotels, decentralized sewage treatment equipment is commonly used to reduce pipe network deployment costs. However, due to the small treatment capacity, large number, and scattered layout of decentralized sewage treatment equipment, the use of electrical equipment can lead to high electricity costs and complex management. This has led to the widespread use of unpowered decentralized sewage treatment equipment. Currently, most unpowered decentralized sewage treatment equipment uses a biofilter bed coupled with an unpowered fan to aerate the system and remove pollutants through biochemical, adsorption, and filtration processes. To ensure uniform water distribution within the biofilter, the filter typically utilizes a high-volume, high-resistance water distribution system. This high volume increases the flow rate at the water distribution orifices, increasing the head loss at the orifice and making it significantly greater than the loss along the pipeline, ensuring that the head loss at each distribution point is essentially consistent, thus achieving uniform water distribution. However, the water volume of decentralized sewage treatment equipment is usually very small. If a water volume regulating device is not installed, the flow velocity at the water distribution orifice is small, that is, the orifice head is small, and a high-resistance water distribution system cannot be realized, thereby failing to achieve the purpose of uniform water distribution, resulting in low utilization of the filter material area.

[0003] Chinese patent application publication number CN217479148U discloses a natural wind-powered sewage treatment device. This invention includes a container, which is provided with one or more biofilm packing layers spaced vertically, and an aeration element at the bottom of each biofilm packing layer. The container is also provided with an exhaust pipe, an air inlet pipe, and a water inlet pipe. The exhaust pipe has an unpowered fan at its outlet end, and the air inlet end of the exhaust pipe is connected to the interior of the container. The air inlet end of each aeration element is connected to the air inlet pipe. A water distribution element is provided above the highest biofilm packing layer, and the water inlet end of the water distribution element is connected to the water inlet pipe. Although this invention is provided with a water distribution element, the amount of water entering the water distribution element is small, the water head of the water distribution orifice is small, and water only flows out of the front water distribution hole, while almost no water flows out of the rear water distribution hole. The problem of uneven water distribution still exists, resulting in low utilization of the packing area. Utility Model Content

[0004] The main purpose of this application is to provide a non-powered sewage treatment equipment to improve the uniformity of water distribution while increasing the utilization rate of the filter material area.

[0005] To achieve the above objectives, in a first aspect, the present application provides a non-powered sewage treatment device, comprising a device housing, a water flow regulating tank disposed in the device housing, a filter layer disposed below the water flow regulating tank, a water inlet pipe connected to the water flow regulating tank, and a water outlet pipe connected to the device housing, wherein the connection between the water outlet pipe and the device housing is located below the filter layer;

[0006] The water regulating tank is connected to a siphon pipe, the bottom of the siphon pipe is connected to a water distribution pipe, and the water distribution pipe is located above the filter layer;

[0007] It also includes an air inlet pipe whose upper end is connected to the outside world and an exhaust pipe whose upper end is connected to the outside world. The lower end of the air inlet pipe is connected to an aeration pipe, and the aeration pipe is located in the filter layer. The upper end of the exhaust pipe is provided with an unpowered fan, and the lower end of the exhaust pipe is connected to the equipment housing.

[0008] A further improvement is that an inverted sleeve is fixedly provided in the water volume regulating tank, and the upper end portion of the siphon tube is fixedly provided in the sleeve.

[0009] A further improvement is that the sleeve is detachably connected to the water regulating tank.

[0010] A further improvement is that a sub-button is provided on the outer wall of the sleeve, and a female buckle that matches the sub-button is fixedly provided on the inner wall of the water volume regulating groove.

[0011] A further improvement is that the water distribution pipes are distributed in an I-shape, and a plurality of water distribution holes are staggered on both horizontal sides of the water distribution pipes.

[0012] A further improvement is that a rainproof cap is provided at the upper end of the air inlet pipe.

[0013] A further improvement is that the unpowered fan is a wind-powered fan.

[0014] A further improvement is that the filter layer includes at least a first layer of filter material, a second layer of filter material, and a third layer of filter material arranged in sequence from top to bottom.

[0015] A further improvement is that the first layer of filter material uses biologically active filter material, the second layer of filter material uses mineral filter material, and the third layer of filter material uses biological material water purification filter material.

[0016] The utility model provides a non-powered sewage treatment equipment, which has the beneficial effect of converting the accumulated small flow into a pulsed large flow by adopting a siphon-type water volume regulating device, so as to realize the periodic flow of large water volume into the water distribution system, thereby increasing the head loss of the water distribution hole, making it much greater than the loss along the pipeline, and the head loss of each water distribution hole in the water distribution pipe is roughly the same, forming a large resistance water distribution system, and achieving the purpose of uniform water distribution. As the liquid level in the water volume regulating device drops, the water volume in the water distribution pipe gradually decreases, and the water outlet spray range of the water distribution hole is from far to near, so as to maximize the spraying area and improve the utilization rate of the filter area. In addition, by arranging multiple layers of filter material inside, it has multiple functions of biochemical, filtration and adsorption to remove pollutants in sewage, and adopts a non-powered and light-running wind energy fan to add oxygen, which greatly improves the air supply efficiency and avoids noise. The system can also ensure the sewage treatment effect at low wind speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of water distribution of the utility model;

[0020] Figure 3 It is a connection diagram of the sleeve and the water regulating groove.

[0021] Among them: 1. Equipment shell, 2. Water inlet pipe, 3. Water outlet pipe, 4. Water regulating tank, 5. Sleeve, 6. Siphon tube, 7. Water distribution pipe, 8. Water distribution hole, 9. Unpowered fan, 10. Air outlet pipe, 11. Rain cap, 12. Air inlet pipe, 13. Aeration hole, 14. First layer of filter material, 15. Second layer of filter material, 16. Third layer of filter material, 17. Male buckle, 18. Female buckle. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0025] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] Additionally, the term "plurality" shall mean two or more.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] like Figure 1-Figure 3As shown, a non-powered sewage treatment equipment includes an equipment shell 1, a water inlet pipe 2, a water outlet pipe 3, a water volume regulating device, a water distribution device, a filter material layer, an air outlet pipe 10 and an air inlet pipe 12. The water inlet pipe is connected to the water volume regulating device. The water volume regulating device includes a water volume regulating tank 4, a sleeve 5, a siphon pipe 6, a sub-buckle 17, and a female buckle 18. The sub-buckle 17 is fixed to the side wall of the sleeve 5, and the female buckle 18 is fixed to the inner wall of the water volume regulating tank 4. The sleeve 5 is fixed to the water volume regulating tank 4 by the sub-buckle 17 and the female buckle 18, thereby realizing the disassembly setting of the sleeve 5 and the water volume regulating tank 4, so that the sleeve can be regularly disassembled and cleaned to avoid blockage caused by foreign matter or long-term operation of biofilm attached to the sleeve. The siphon pipe 6 is connected to the water distribution pipe 7. The water distribution pipe 7 is distributed in an I-shape, and water distribution holes 8 are evenly staggered on both sides of the water distribution pipe 7. The filter material comprises at least three layers. The first filter material 14 is preferably a biologically active filter material, the second filter material 15 is preferably a mineral filter material, and the third filter material 16 is preferably a biological water purification filter material. An unpowered blower 9 is provided at the top of the outlet pipe 10. The unpowered blower is preferably a light-operating wind-powered blower. A rain cap 11 is provided at the top of the air inlet pipe 12. The air inlet pipe 12 is connected to an aeration pipe. The air inlet pipe 12 and the aeration pipe can be an integrated structure. Specifically, the air inlet pipe 12 bends to the bottom of the first filter material layer and has aeration holes 13 provided in the bottom transverse pipe.

[0029] During specific operation, sewage enters the water regulating tank 4 through the water inlet pipe 2, and the liquid levels in the water regulating tank 4 and the sleeve 5 rise synchronously. The air in the sleeve 5 is discharged as the liquid level rises until the highest liquid level (i.e., the siphon starting level). This stage is the water filling process. When the liquid level reaches the highest level, the air in the siphon pipe is discharged, and the sewage is pumped out of the water regulating tank 4. Siphoning occurs until the liquid level drops to the lowest level (i.e., the siphon breaking level). External air enters the siphon pipe, and the pipe is connected to the atmospheric pressure, thereby ending the siphon. This stage is the water discharge process. After the siphon starts, the sewage in the water regulating tank 4 flows through the siphon pipe 6 to the water distribution pipe 7, and is sprayed to the filter material area through the water distribution hole 8. This stage is the water distribution process. A water filling process, a water discharge process, and a water distribution process constitute a complete pulse water distribution cycle. The single water distribution volume is the water volume corresponding to the highest and lowest liquid levels in the water regulating tank 4. This water volume can be sprayed as far as the edge of the container during the water distribution process. As the water in the water distribution pipe gradually sprays out, the spraying range of the water distribution hole gradually shrinks from the edge of the container to the bottom of the water distribution pipe, ensuring that the spraying range is maximized within one water distribution cycle. The water distribution holes on the water distribution pipe are staggered and evenly opened on the opposite sides, so that the filter material in the filter area can be evenly sprayed, thereby maximizing the utilization rate of the filter material area. At the same time, the present invention provides an air inlet pipe 12 connected to the bottom of the biological filter material, a rainproof cap 11 is provided at the air inlet, an air outlet pipe 10 is provided on the opposite side of the air inlet pipe 12, and an unpowered fan 9 is provided at the end of the air outlet pipe. Under the action of wind, the blades of the unpowered fan rotate, and the outside air passes through the first layer of filter material from the air inlet pipe and is then pulled out from the air outlet pipe. Aeration holes 13 are provided on the air inlet pipe of the first layer of filter material to achieve uniform oxygenation of the first layer of filter material 14. The first layer of filter media 14 is preferably a biologically active filter media. The biologically active filter media has a large specific surface area and is highly hydrophilic, making it easy for microorganisms to attach to its surface. During the oxygenation process of the filter media layer, the surface of a single biological filter media carrier is in an aerobic environment, while the inner layer is in an anaerobic or anoxic environment. The sewage is evenly sprayed onto the filter media area through a water distribution device. As the sewage flows downward through the biological filter media layer, it fully contacts the upward-flowing air, achieving simultaneous nitrification and denitrification to remove pollutants such as COD, NH3-N, and TN in the sewage. After the sewage flows out of the first layer of filter media, it flows into the second and third layers of filter media 15 and 16 in sequence, where pollutants such as NH3-N and total phosphorus are further removed through adsorption, filtration, and chemical reactions.

[0030] When the sleeve is clogged due to foreign matter or biofilm adhesion caused by long-term operation, the sleeve 5 and the sub-button 17 are pulled out upwards and cleaned. After cleaning, the sub-button 17 is inserted into the groove of the female buckle 18 to fix the sleeve 5 in the water flow regulating tank 4 again. The present invention facilitates the operation and maintenance personnel to disassemble and clean the sleeve, avoiding blockage caused by foreign matter or biofilm adhesion in the sleeve due to long-term operation.

[0031] Under low wind speed conditions, the oxygenation efficiency of the unpowered fan decreases, the dissolved oxygen concentration inside the equipment decreases, and the ability of the first layer of filter material 14 to remove pollutants is weakened. The second layer of filter material 15 is preferably mineral filter material, and the third layer of filter material 16 is preferably biological material water purification filter material, which can remove pollutants in sewage through adsorption, filtration and chemical reaction, thereby ensuring the removal effect of nitrogen and phosphorus under low wind speed conditions.

[0032] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A non-powered sewage treatment equipment, characterized in that: The device comprises a housing, a water regulating tank disposed in the housing, a filter layer disposed below the water regulating tank, a water inlet pipe connected to the water regulating tank, and a water outlet pipe connected to the housing, wherein the connection between the water outlet pipe and the housing is located below the filter layer; The water regulating tank is connected to a siphon pipe, the bottom of the siphon pipe is connected to a water distribution pipe, and the water distribution pipe is located above the filter layer; It also includes an air inlet pipe whose upper end is connected to the outside world and an exhaust pipe whose upper end is connected to the outside world. The lower end of the air inlet pipe is connected to an aeration pipe, and the aeration pipe is located in the filter layer. The upper end of the exhaust pipe is provided with an unpowered fan, and the lower end of the exhaust pipe is connected to the equipment housing.

2. The unpowered sewage treatment equipment according to claim 1, characterized in that: An inverted sleeve is fixedly arranged in the water volume regulating tank, and the upper end portion of the siphon tube is fixedly arranged in the sleeve.

3. The unpowered sewage treatment equipment according to claim 2, characterized in that: The sleeve is detachably connected to the water volume regulating groove.

4. The unpowered sewage treatment equipment according to claim 3, characterized in that: The outer wall of the sleeve is provided with a sub-buckle, and the inner wall of the water volume regulating groove is fixedly provided with a female buckle that matches the sub-buckle.

5. The unpowered sewage treatment equipment according to claim 1, characterized in that: The water distribution pipes are distributed in an I-shape, and a plurality of water distribution holes are staggeredly provided on both horizontal sides of the water distribution pipes.

6. The unpowered sewage treatment equipment according to claim 1, characterized in that: The upper end of the air inlet pipe is provided with a rainproof cap.

7. The unpowered sewage treatment equipment according to claim 1, characterized in that: The unpowered fan is a wind energy fan.

8. The unpowered sewage treatment equipment according to claim 1, characterized in that: The filter layer at least includes a first layer of filter material, a second layer of filter material, and a third layer of filter material which are arranged in sequence from top to bottom.

9. The unpowered sewage treatment equipment according to claim 8, characterized in that: The first layer of filter material adopts biological active filter material, the second layer of filter material adopts mineral filter material, and the third layer of filter material adopts biological material water purification filter material.

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