Sewage treatment device suitable for dispersive rural area life

Abstract

The utility model discloses a sewage treatment device suitable for dispersed rural area life. The sewage treatment device comprises a conveying pipeline, a septic tank, a grating, a biological treatment tank, a dripping biological tank, an ecological filter bed and a clean water tank, a water storage layer, a communicating dropper, a dripping layer, an active zeolite layer, a pyrite filler layer, an adsorption filler layer, a biological filler layer and a clear water layer are sequentially arranged in the dripping biological tank from top to bottom; the second pipeline is communicated to the water storage layer; the clear water layer is communicated to the water storage layer through a third pipeline; a liquid level sensor is arranged in the biological filler layer; the liquid level sensor is in communication connection with the second water pump to control the second water pump to start when the liquid level of the biological filler layer is smaller than a preset value. The sewage treatment device suitable for decentralized rural area life is high in sewage treatment efficiency, the activity of the biological filler layer is stable, and the sewage treatment device is more suitable for decentralized rural area life sewage treatment.

Description

Technical Field

[0001] The utility model relates to a sewage treatment device suitable for living in decentralized rural areas. Background Art

[0002] Sewage treatment in scattered rural areas is a complex and important issue, because these areas usually lack centralized sewage treatment facilities, resulting in the inability to effectively treat sewage, which poses a potential threat to the environment and human health. In order to solve this problem, a variety of methods can be used to treat sewage in scattered rural areas. Common treatment technologies are as follows: 1) Small sewage treatment devices: In scattered rural areas, integrated sewage treatment equipment, biological filters, etc. are used. These devices can be installed outdoors to treat domestic sewage, purify the water quality before discharge or use for irrigation, etc.; 2) Artificial wetlands are a natural and effective sewage treatment method. Through the joint action of plants and microorganisms, organic matter and pollutants in sewage can be removed to improve water quality. In rural areas, artificial wetlands can be built to treat rural sewage; 3) Decentralized biological treatment systems: Decentralized biological treatment systems include biological filters, active pools, etc., which degrade organic matter in sewage into harmless substances through biodegradation, purify water quality, etc.

[0003] The above schemes involve biological treatment in their implementation. When biological treatment is used, the lack of water will cause the death of microorganisms in the biological pool, thus affecting the efficiency of biological treatment. At the same time, conventional biological treatment methods for nitrogen and phosphorus removal generally use: anaerobic, anoxic and aerobic. Among them, aerobic generally uses aeration to provide oxygen, which consumes a lot of energy and does not conform to the concept of green and low-carbon development. Utility Model Content

[0004] The utility model provides a sewage treatment device suitable for decentralized rural areas to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0005] A sewage treatment device suitable for decentralized rural areas comprises: a plurality of conveying pipelines for introducing domestic sewage, a septic tank for precipitating and oxidizing and decomposing the domestic sewage, a grille for separating and filtering sediment and sewage, a biological treatment tank for anaerobic biological treatment of domestic sewage, a dripping biological tank for denitrification and phosphorus removal of domestic sewage, an ecological filter bed for plant absorption and filtration of domestic sewage, and a clear water tank for collecting and storing filtered domestic sewage; one end of the plurality of conveying pipelines is respectively connected to the sewage pipeline outlets of different villages and the other end is connected to the septic tank; the septic tank and the biological treatment tank are connected through a first pipeline; the grille is arranged on the first pipeline; the biological treatment tank is connected to the top of the dripping biological tank through a second pipeline; the second pipeline is provided with a first water pump for conveying domestic sewage into the dripping biological tank; the dripping biological tank is connected from top to bottom according to the first water pump. The system is provided with: a water storage layer for storing domestic sewage, a connecting dripping pipe for dripping sewage, a dripping layer for allowing dripping domestic sewage to fully contact with air, a pyrite filler layer for filtering inorganic matter, an adsorption filler layer for adsorption filtration, a biological filler layer for biological filtration and a clean water layer for collecting effluent; the second pipe is connected to the water storage layer; the clean water layer is connected to the water storage layer through a third pipe; the third pipe is provided with a second water pump for pumping water in the clean water layer into the water storage layer; the biological filler layer is provided with a liquid level sensor for detecting the liquid level in the biological filler layer; the liquid level sensor is communicatively connected to the second water pump to control the second water pump to start when the liquid level in the biological filler layer is less than a preset value; the clean water layer is connected to the ecological filter bed through a fourth pipe; the fourth pipe is provided with a third water pump for transporting water in the clean water layer to the ecological filter bed; the ecological filter bed is connected to the clean water tank through a fifth pipe.

[0006] Furthermore, the biological treatment pool is provided with: an anaerobic zone with anaerobic organisms, an anoxic zone with a small amount of oxygen, and a water regulating zone for buffering and storing anoxic domestic sewage; the first pipe is connected to the anaerobic zone; the water regulating zone is connected to the upper end of the dripping biological pool through the second pipe.

[0007] Furthermore, one end of the first pipeline is connected to the bottom of the anaerobic zone; the top of the anaerobic zone is connected to the upper part of the anoxic zone; and the lower part of the anoxic zone is connected to the bottom of the water volume regulating zone.

[0008] Furthermore, the plurality of interconnected drip tubes are distributed in a matrix.

[0009] Furthermore, the ecological filter bed includes: a plant layer for plant absorption and filtration of domestic sewage; a phosphorus adsorption layer for phosphorus removal is filled below the plant layer; a water outlet layer for water outlet is provided below the phosphorus adsorption layer; and both ends of the fifth pipe are connected to the water outlet layer and the clean water tank respectively.

[0010] Further, the phosphorus adsorption layer is composed of a mixture of volcanic rock and zeolite.

[0011] Furthermore, the liquid level sensor is arranged at the upper end of the biological filler layer.

[0012] Furthermore, the adsorption filler layer is composed of a mixture of activated carbon, magnesium and aluminum.

[0013] Furthermore, a fourth water pump is provided in the clean water tank for pumping water out of the clean water tank for use in greening and the like.

[0014] Furthermore, the grille is a mesh grille.

[0015] The utility model is beneficial in that the sewage treatment device suitable for decentralized rural areas adopts a dripping biological pool to evenly distribute and filter the incoming domestic sewage, so that the biological filler layer can effectively remove nitrogen and phosphorus from the domestic sewage. The dripping layer can dissolve oxygen in the dripping sewage, effectively improving the degradation efficiency of ammonia nitrogen and total nitrogen by microorganisms in the biological filler layer. Combined with physical adsorption and chemical decomposition treatment methods, the pollutants such as difficult-to-degrade organic matter, total nitrogen and total phosphorus in the sewage can be removed in turn.

[0016] The present solution is applicable to a decentralized rural area domestic sewage treatment device in which a clean water layer is arranged in the dripping biological pool. The second water pump in the clean water layer pumps appropriate water into the water storage layer according to the detection value of the liquid level sensor, thereby ensuring that a stable amount of water is always maintained in the biological filler layer, thereby ensuring the activity of the organisms in the biological filler layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of a sewage treatment device applicable to decentralized rural areas of the utility model;

[0019] A sewage treatment device 10 suitable for living in decentralized rural areas, a delivery pipeline 11, a septic tank 12, a grille 13, a biological treatment tank 14, an anaerobic zone 141, an anoxic zone 142, a water volume regulating zone 143, a dripping biological tank 15, a water storage layer 151, a connecting drip pipe 152, a dripping layer 153, an activated zeolite layer 154, a pyrite filler layer 155, an adsorption filler layer 156, a biological filler layer 157, a clean water layer 158, an ecological filter bed 16, a plant layer 161, a phosphorus adsorption layer 162, an outlet layer 163, a clean water tank 17, a first pipeline 18, a second pipeline 19, a first water pump 20, a third pipeline 21, a second water pump 22, a fourth pipeline 23, a third water pump 24, a fifth pipeline 25, a fourth water pump 26, and a liquid level sensor 27. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0021] like Figure 1As shown, a sewage treatment device 10 suitable for decentralized rural areas of the present application includes: a delivery pipeline 11, a septic tank 12, a grille 13, a biological treatment tank 14, a dripping biological pool 15, an ecological filter bed 16 and a clean water pool 17. Multiple delivery pipelines 11 are used to introduce domestic sewage from different villages, the septic tank 12 is used to precipitate and oxidize and decompose the above-mentioned domestic sewage, the grille 13 is used to separate and filter the sediment and sewage, the biological treatment tank 14 is used to perform anaerobic biological treatment on domestic sewage, the dripping biological pool 15 is used to remove nitrogen and phosphorus from domestic sewage, the ecological filter bed 16 is used to perform plant absorption and filtration on domestic sewage, and the clean water pool 17 is used to collect and store filtered domestic sewage. Among them, the dripping biological pool 15 is provided with: a water storage layer 151, a connecting drip pipe 152, a dripping layer 153, an activated zeolite layer 154, a pyrite filler layer 155, an adsorption filler layer 156, a biological filler layer 157 and a clean water layer 158 from top to bottom. Among them: the water storage layer 151 is used to store domestic sewage, the connecting dropper 152 is used to connect the water storage layer 151 and the activated zeolite layer 154, the dripping layer 153 is used to allow the dripping domestic sewage to fully contact with the air, the activated zeolite layer 154 has heat preservation and filtering properties, the pyrite filler layer 155 is used to filter inorganic matter, the adsorption filler layer 156 is used for adsorption filtration, the biological filler layer 157 is used for biological filtration, and the clean water layer 158 is used to collect effluent. During installation, one end of the multiple delivery pipes 11 is connected to the sewage pipe outlets of different villages respectively and the other end is connected to the septic tank 12. The septic tank 12 and the biological treatment tank 14 are connected through the first pipe 18. The grille 13 is set on the first pipe 18. The biological treatment tank 14 is connected to the top of the dripping biological pool 15 through the second pipe 19, that is, the second pipe 19 is connected to the water storage layer 151. The second pipe 19 is provided with a first water pump 20 for transporting domestic sewage to the dripping biological pool 15. The clean water layer 158 is connected to the ecological filter bed 16 through the fourth pipe 23. The fourth pipe 23 is provided with a third water pump 24 for transporting water in the clean water layer 158 to the ecological filter bed 16. The ecological filter bed 16 is connected to the clean water pool 17 through the fifth pipe 25. The clean water pool 17 is provided with a fourth water pump 26 for pumping water out of the clean water pool 17 for greening and other uses. The above-mentioned adsorption filler layer 156 is composed of a mixture of activated carbon, magnesium and aluminum, and the adsorption reaction effect is better.

[0022] When the above scheme is actually used, the domestic sewage is transported to the septic tank 12 through the conveying pipe 11 for aeration and precipitation to obtain the upper effluent. The upper effluent is first filtered through the grid 13 under the conveyance of the first pipe 18, and then enters the biological treatment tank 14 for anaerobic treatment, so as to perform preliminary nitrogen and phosphorus removal to obtain new effluent. The above-mentioned new effluent is input into the water storage layer 151 along the second pipe 19 under the action of the first water pump 20, and the water in the water storage layer 151 drips along the connecting drip pipe 152 to the dripping layer 153 below. The water in the water storage layer 151 fully contacts with oxygen and dissolves oxygen when passing through the dripping layer 153. Then the water dissolved with oxygen enters the activated zeolite layer 154, the pyrite filler layer 155, the adsorption filler layer 156, the biological filler layer 157 in turn, and finally enters the clear water layer 158. The dripping water can be efficiently purified after chemical decomposition, physical adsorption and biological decomposition in turn. That is to say, the above-mentioned sewage treatment device 10 suitable for decentralized rural areas uses a dripping biological pool 15 to evenly distribute and filter the incoming domestic sewage, so that the biological filler layer 157 can effectively remove nitrogen and phosphorus from the domestic sewage, and the dripping layer 153 can make the dripping sewage dissolve oxygen, reduce the energy consumption of dissolved oxygen, and effectively improve the degradation efficiency of ammonia nitrogen and total nitrogen by microorganisms in the biological filler layer 157. Combined with physical adsorption and chemical decomposition treatment methods, it can remove the pollutants such as difficult-to-degrade organic matter, total nitrogen and total phosphorus in the sewage in turn. The grille 13 here uses a mesh grille 13, which has a better filtering effect.

[0023] Furthermore, the clean water layer 158 is also connected to the water storage layer 151 through the third pipe 21, and the third pipe 21 is provided with a second water pump 22 for pumping water in the clean water layer 158 into the water storage layer 151. A humidity sensor 27 is provided in the biological filler layer 157 for detecting the liquid level in the biological filler layer 157, and the humidity sensor 27 is communicatively connected to the second water pump 22 to control the second water pump 22 to start when the liquid level in the biological filler layer 157 is less than a preset value, thereby pumping water in the clean water layer 158 into the water storage layer 151, and then replenishing water to the biological filler layer 157 to ensure biological activity.

[0024] The dripping biological pool 15 of the sewage treatment device 10 applicable to decentralized rural areas of this solution is provided with a clean water layer 158. The second water pump 22 in the clean water layer 158 pumps appropriate water into the water storage layer 151 according to the detection value of the humidity sensor 27, so as to ensure that a stable amount of water is always maintained in the biological filler layer 157, thereby ensuring the activity of the organisms in the biological filler layer 157. During installation, the humidity sensor 27 is set at the upper end of the biological filler layer 157, so as to ensure that the overall biological activity inside the biological filler layer 157 is uniform.

[0025] As a specific implementation, the biological treatment pool 14 is provided with: an anaerobic zone 141 with anaerobic organisms, an anoxic zone 142 with a small amount of oxygen, and a water volume regulating zone 143 for buffering and storing the anoxic domestic sewage. The first pipe 18 is connected to the anaerobic zone 141 .

[0026] The water volume regulating area 143 is connected to the upper end of the dripping biological pool 15 through the second pipe 19. Specifically, one end of the first pipe 18 is connected to the bottom of the anaerobic zone 141, the top of the anaerobic zone 141 is connected to the upper part of the anoxic zone 142, and the lower part of the anoxic zone 142 is connected to the bottom of the water volume regulating area 143. In this way, the sufficiency of anaerobic biological filtration can be ensured.

[0027] As a specific implementation, a plurality of connecting dripping pipes 152 are distributed in a matrix to ensure uniformity of sewage dripping.

[0028] As a specific implementation, the ecological filter bed 16 includes: a plant layer 161 for plant absorption and filtration of domestic sewage, a phosphorus adsorption layer 162 is filled below the plant layer 161 for phosphorus removal, a water outlet layer 163 is provided below the phosphorus adsorption layer 162 for water outlet, and both ends of the fifth pipe 25 are connected to the water outlet layer 163 and the clean water tank 17 respectively, so as to transport the filtered clean water in the water outlet layer 163 to the clean water tank 17 for storage. Among them, the phosphorus adsorption layer 162 is composed of a mixture of volcanic rock and zeolite, which can improve the adsorption effect of phosphorus.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A sewage treatment device suitable for decentralized rural areas, characterized in that: include: A plurality of conveying pipelines for introducing domestic sewage, a septic tank for settling and oxidizing and decomposing the domestic sewage, a screen for separating and filtering sediment and sewage, a biological treatment tank for anaerobic biological treatment of domestic sewage, a dripping biological tank for denitrification and phosphorus removal of domestic sewage, an ecological filter bed for plant absorption and filtration of domestic sewage, and a clear water tank for collecting and storing filtered domestic sewage; One end of the plurality of delivery pipes is respectively connected to the sewage pipe outlets of different villages and the other end is connected to the septic tank; The septic tank and the biological treatment tank are connected via a first pipeline; The grille is disposed on the first pipe; The biological treatment tank is connected to the top of the dripping biological tank through a second pipeline; The second pipeline is provided with a first water pump for conveying domestic sewage into the dripping biological pond; The dripping biological pool is provided with: a water storage layer for storing domestic sewage, a connecting dripping pipe for dripping sewage, a dripping layer for allowing the dripping domestic sewage to fully contact with air, an active zeolite layer with heat preservation and filtering performance, a pyrite filler layer for filtering inorganic substances, an adsorption filler layer for adsorption filtration, a biological filler layer for biological filtration and a clear water layer for collecting effluent; The second pipeline is connected to the water storage layer; the clean water layer is connected to the water storage layer through a third pipeline; The third pipeline is provided with a second water pump for pumping water in the clear water layer into the water storage layer; A liquid level sensor for detecting the liquid level in the biological filler layer is provided in the biological filler layer; The liquid level sensor is communicatively connected to the second water pump to control the second water pump to start when the liquid level of the biological filler layer is less than a preset value; The clean water layer is connected to the ecological filter bed through a fourth pipeline; The fourth pipeline is provided with a third water pump for conveying water in the clear water layer to the ecological filter bed; The ecological filter bed is connected to the clean water tank through a fifth pipeline.

2. The sewage treatment device applicable to decentralized rural area life according to claim 1 is characterized in that: The biological treatment pool is provided with: an anaerobic zone with anaerobic organisms, an anoxic zone with a small amount of oxygen, and a water volume regulating zone for buffering and storing the anoxic domestic sewage; The first pipeline is connected to the anaerobic zone; The water volume regulating area is connected to the upper end of the dripping biological pond through the second pipeline.

3. The sewage treatment device applicable to decentralized rural area life according to claim 2 is characterized in that: One end of the first pipe is connected to the bottom of the anaerobic zone; The top of the anaerobic zone is connected to the upper part of the anoxic zone; The lower part of the anoxic zone is connected to the bottom of the water volume regulating zone.

4. The sewage treatment device applicable to decentralized rural areas according to claim 1 is characterized in that: The plurality of communicating droppers are distributed in a matrix pattern.

5. The sewage treatment device applicable to decentralized rural area life according to claim 1 is characterized in that: The ecological filter bed comprises: a plant layer for performing plant absorption and filtration on domestic sewage; A phosphorus adsorption layer for removing phosphorus is provided below the plant layer; A water outlet layer for outlet water is provided below the phosphorus adsorption layer; Both ends of the fifth pipeline are connected to the water outlet layer and the clean water tank respectively.

6. The sewage treatment device applicable to decentralized rural area life according to claim 1 is characterized in that: The liquid level sensor is arranged at the upper end of the biological filler layer.

7. The sewage treatment device applicable to decentralized rural areas according to claim 1 is characterized in that: The clean water tank is provided with a fourth water pump for pumping water out of the clean water tank for greening and the like.

8. The sewage treatment device applicable to decentralized rural areas according to claim 1 is characterized in that: The grille is a mesh grille.

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