Ecological purification tank

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to an ecological purification tank which comprises a first drainage pipe, a purification tank body and a second drainage pipe which are sequentially connected, four layers of cleaning baskets are arranged in the purification tank body from bottom to top, and the outer surfaces of the peripheries of the cleaning baskets are attached to the inner walls of the four sides of the purification tank body respectively, so that all sewage flows through a filter material; unfiltered sewage is prevented from flowing to the upper layer; a cobblestone layer, a gravel layer, a fine sand layer and a planting soil layer are sequentially laid in the four layers of cleaning baskets from bottom to top in a layered mode, plants are planted in the planting soil layer, and the particle sizes of the cobblestone layer, the gravel layer and the fine sand layer are all larger than the hole diameter of the cleaning baskets, so that cobblestone, gravel and fine sand are prevented from falling off from holes of the cleaning baskets and then being mixed, and the layered filtering effect is prevented from losing. The cleaning basket is arranged, when the filter material needs to be cleaned, the cleaning basket is pulled out, and garbage and impurities attached to the surface of the filter material can be cleaned, so that the garbage and the impurities are prevented from being accumulated, and the sewage filtering effect is prevented from being influenced.

Description

Technical Field:

[0001] This application relates to the technical field of sewage treatment equipment, and particularly to an ecological purification tank. Background Art:

[0002] With the development of rural economy and the improvement of residents' living standards, the discharge of rural domestic sewage has gradually increased.

[0003] The existing technology for sewage treatment, such as the Chinese national utility model patent with the patent application number 202322505212.2 - A Composite Subsurface Flow Constructed Wetland, includes a water purification area, a collection channel arranged on one side of the water purification area, a valve well arranged on the other side of the water purification area, and a distribution channel arranged on the other side of the valve well. The water purification area includes a planting layer, a protection layer, and a sand and gravel layer. The protection layer is composed of a sponge layer and a steel frame layer, and the sponge layer is located on the opposite side of the planting layer and the steel frame layer. The sand and gravel layer includes a fine sand layer, a gravel layer, and a cobblestone layer. The fine sand layer is located at the bottom of the steel frame layer, the gravel layer is located at the bottom of the fine sand layer, and the cobblestone layer is located at the bottom of the gravel layer. Anti - seepage layers are provided at the bottoms of the water purification area, the collection channel, the valve well, and the distribution channel.

[0004] The technical solution adopted by this patent realizes the filtration of industrial wastewater. Compared with industrial wastewater, the pollutant concentration of rural domestic sewage is lower, and it rarely contains heavy metals and toxic and harmful substances. Therefore, this technical solution can also be used to treat rural domestic sewage. However, in the water purification area of this technical solution, multiple layers of filter media are stacked to intercept the garbage and impurities contained in the sewage. After long - term use, it is difficult to clean and maintain, which will cause the continuous accumulation of garbage and impurities, emit odors, and also block the gaps between the filter media, affecting the flow of sewage and weakening the sewage filtration effect. Utility Model Content:

[0005] To solve the above - mentioned technical problems, the present utility model provides an ecological purification tank, and the technical problem to be solved is: In the water purification area of the sewage treatment equipment, multiple layers of filter media are stacked, and it is difficult to clean and maintain after long - term use, which will cause the continuous accumulation of garbage and impurities, emit odors, and also block the gaps between the filter media, affecting the sewage filtration effect. To solve the above - mentioned technical problems, the technical solution adopted by the present utility model is:

[0006] An ecological purification tank includes a first drain pipe, a purification tank, and a second drain pipe connected in sequence; the purification tank includes:

[0007] Four cleaning baskets arranged from bottom to top, and the outer surfaces around the cleaning baskets are respectively attached to the four inner walls of the purification tank;

[0008] They are sequentially laid in layers from bottom to top in a corresponding cleaning basket, including a cobblestone layer, a gravel layer, a fine sand layer, and a planting soil layer. Plants are planted in the planting soil layer. The particle sizes of the cobblestone layer, the gravel layer, and the fine sand layer are all larger than the aperture of the cleaning basket.

[0009] Further, a groove is provided at the upper part of the inner walls on both sides of the cleaning basket.

[0010] Further, a geotextile is provided on the inner wall of the cleaning basket where the planting soil layer is laid, and the planting soil layer is laid on the geotextile.

[0011] Further, the second drain pipe is provided with water permeable holes, and the outer periphery of the second drain pipe at the water permeable holes is wrapped with a geotextile. The connection of the second drain pipe to the purification tank is located in the fine sand layer.

[0012] Further, the connection of the outlet end of the first drain pipe to the purification tank is located in the cobblestone layer;

[0013] A house connection well is connectedly provided at the inlet of the first drain pipe, and a basket grille is provided in the house connection well.

[0014] Further, a medium and coarse sand cushion layer is laid at the bottom of the purification tank.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. By providing the cleaning basket, during installation, cobblestones, gravels, fine sand, and planting soil can be respectively placed into the corresponding cleaning baskets. When cleaning is required, the cleaning basket is pulled out, and the garbage and impurities attached to the surfaces of the cobblestones, gravels, and fine sand can be cleaned. This can effectively prevent the accumulation of garbage and impurities from generating odors, and can avoid the blockage of the filter media gaps by garbage and impurities, affecting the sewage filtration effect.

[0017] 2. The geotextile has the functions of filtration and penetration. Through the design of laying the planting soil layer on the geotextile, water can penetrate through the geotextile into the planting soil layer, while the planting soil will not flow into other filtration layers, and when the cleaning basket is pulled out, the geotextile can prevent the planting soil from scattering from the holes of the cleaning basket.

[0018] 3. By providing the house connection well and the basket grille, large-volume and large-block solid impurities contained in the sewage can be filtered in advance, avoiding the blockage of the drain pipe caused by the entry of large-volume and large-block solid impurities. Description of the Drawings:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the cleaning basket in the present utility model

[0021] In the figure:

[0022] 1. First drain pipe, 2. Purification tank, 3. Second drain pipe, 4. Cleaning basket, 5. Cobblestone layer, 6. Gravel layer, 7. Fine sand layer, 8. Planting soil layer, 9. Groove, 10. Permeable hole, 11. Service connection well, 12. Basket grille, 13. Medium and coarse sand cushion layer. Specific implementation method:

[0023] To make the purpose, technical solution and advantages of the implementation of the present utility model clearer, the present utility model will now be further described in detail with reference to the accompanying drawings and the following embodiments, so that the public can better master the implementation method of the present utility model. The specific implementation scheme of the present utility model is as follows:

[0024] An ecological purification tank includes a first drain pipe 1, a purification tank 2 and a second drain pipe 3 connected in sequence. Four layers of cleaning baskets 4 are arranged in the purification tank 2 from bottom to top. The outer surfaces around the cleaning baskets 4 are respectively attached to the four inner walls of the purification tank 2, so that all sewage flows through the filter media, preventing unfiltered sewage from flowing to the upper layer; Four layers of cleaning baskets 4 are sequentially and hierarchically paved with a cobblestone layer 5, a gravel layer 6, a fine sand layer 7 and a planting soil layer 8 from bottom to top. Plants are planted in the planting soil layer 8. The particle sizes of the cobblestone layer 5, the gravel layer 6 and the fine sand layer 7 are all larger than the pore size of the cleaning basket 4, preventing cobblestones, gravels and fine sands from falling out of the holes of the cleaning basket 4 and mixing, losing the hierarchical filtration effect; The cleaning basket 4 is provided. When the filtering device needs to be cleaned, the cleaning basket 4 is pulled out, and the garbage and impurities attached to the surfaces of the cobblestones, gravels and fine sands can be cleaned, thereby preventing the accumulation of garbage and impurities and affecting the sewage filtration effect.

[0025] Furthermore, cobblestones, gravels and fine sands can all intercept impurities such as sediment, suspended matter and humus in water, and the cobblestones, gravels and fine sands are placed according to the particle size, with large particles first and small fine sands later. This arrangement ensures the optimization of the filtration effect, because large particles can provide a larger filtration area and a stronger physical interception effect, while small fine sands can further refine the filtration effect and remove smaller impurities. The plants in the planting soil layer can be selected from herbaceous purification plants such as calamus, cyperus, juncus effusus and zizania latifolia. The herbaceous purification plants carry out biological purification on the sewage, can absorb nutrients such as nitrogen and phosphorus in the sewage, increase the oxygen content in the water, and promote the self-purification of the water body, that is, the microbial oxidation decomposes the organic pollutants into simple and stable inorganic substances such as carbon dioxide, water and inorganic salts containing nitrogen and phosphorus. Through these two methods, the nitrogen and phosphorus contents, chemical oxygen demand COD and biochemical oxygen demand BOD in the sewage have obvious absorption and degradation effects, and finally the treatment effect is achieved.

[0026] Specifically, a groove 9 is provided at the upper part of the inner walls on both sides of the cleaning basket 4, providing a supporting point for exerting force when pulling out the cleaning basket 4, so that it is easier to pull out the cleaning basket 4.

[0027] It should be elaborated that a geotextile is provided on the inner wall of the cleaning basket 4 laid with the planting soil layer 8, and the planting soil layer 8 is laid on the geotextile. The geotextile has the functions of filtration and penetration. Water can penetrate through and enter the planting soil layer 8, while the planting soil will not flow into other filter layers. Moreover, when the cleaning basket 4 is lifted out, the geotextile can prevent the planting soil from scattering out of the holes of the cleaning basket.

[0028] It should be noted that the aperture of the second drain pipe 3 is larger than that of the cleaning basket to prevent impurities in the sewage from entering the drain pipe; the second drain pipe 3 is provided with water permeable holes 10 wrapped with geotextile. The filtered sewage is discharged to the outside through the drain pipe. If there is an existing ditch, the drain pipe can be connected to the ditch. If there is no existing ditch or river channel, the water can penetrate into the soil through the water permeable holes 10 opened on the drain pipe, and the wrapped geotextile can prevent external impurities from blocking the water permeable holes 10 and affecting the drainage effect; the connection part of the second drain pipe 3 and the purification tank 2 is located in the fine sand layer 7, and the sewage reaching the fine sand layer 7 is the filtered sewage and meets the discharge standard.

[0029] Furthermore, the connection part of the outlet end of the first drain pipe 1 and the purification tank 2 is located in the cobblestone layer 5, allowing the sewage to enter from the bottom of the purification tank 2 to ensure that the sewage flows through all the filter materials and ensure the filtering effect; a house connection well 11 is connected and arranged at the inlet of the first drain pipe 1, and a basket grille 12 is arranged in the house connection well 11. The house connection well 11 can be connected to the sewage pipe used by the household to drain sewage. The basket grille 12 in the house connection well 11 can filter large-volume and large-block solid impurities contained in the sewage to avoid large-volume and large-block solid impurities from entering the drain pipe and causing blockage of the drain pipe.

[0030] Specifically, a medium-coarse sand cushion layer 13 is laid at the bottom of the purification tank 2. The medium-coarse sand cushion layer 13 replaces the soil as the base layer, which can improve the bearing capacity of the foundation and reduce the settlement and deformation of the foundation.

[0031] In another embodiment, the number of the cleaning baskets 4 is eight, and two cleaning baskets 4 are arranged in each of the cobblestone layer 5, the gravel layer 6, the fine sand layer 7 and the planting soil layer 8. Using two cleaning baskets 4 can disperse the weights of the cobblestones, gravels, fine sands and planting soils, make the load of each cleaning basket 4 more balanced, and make it easier to pull out the cleaning basket 4.

[0032] The working principle and process of the present utility model are as follows:

[0033] Sewage enters the service connection well 11 through the sewage pipe used by the household to discharge sewage. The large-volume and large-block solid impurities in the sewage are intercepted by the basket grille 12. Then the sewage flows out of the basket grille 12 and enters the bottom of the purification tank 2 along the first drain pipe 1, and successively passes through the cobblestone layer 5, gravel layer 6, fine sand layer 7 and planting soil layer 8. The impurities in the sewage are adsorbed on the filter materials of each layer. The purified sewage finally discharges through the water-permeable holes 10 on the second drain pipe 3. When it is necessary to clean the impurities, first take out the basket grille 12 to pour out the solid impurities therein, then wash the basket grille 12 and put it back. After that, rely on the grooves 9 in the cleaning basket 4 to successively lift out the four cleaning baskets 4 together with the filter materials therein, clean the cobblestone layer 5, gravel layer 6, fine sand layer and the inside of the purification tank 2, and finally put the four cleaning baskets 4 together with the filter materials in the cleaning basket 4 back in turn.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it cannot be understood as a limitation on the protection scope of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Although the present invention is described according to a limited number of embodiments, those skilled in the art in this technical field should understand that within the scope of the present invention thus described, other embodiments can be envisioned.

Claims

1. An ecological purification tank, comprising a first drainage pipe (1), a purification tank (2) and a second drainage pipe (3) connected in sequence; characterized in that: The septic tank (2) includes: Four layers of cleaning baskets (4) are arranged from bottom to top, and the outer surfaces of the cleaning baskets (4) are respectively in contact with the inner walls of the four sides of the purification tank (2); A pebble layer (5), a gravel layer (6), a fine sand layer (7) and a planting soil layer (8) are sequentially laid in layers from bottom to top in a corresponding cleaning basket (4), wherein plants are planted in the planting soil layer (8), and the particle sizes of the pebble layer (5), the gravel layer (6) and the fine sand layer (7) are all larger than the aperture of the cleaning basket.

2. An ecological purification tank according to claim 1, characterized in that: A groove (9) is respectively provided on the upper part of the inner walls on both sides of the cleaning basket (4).

3. The ecological purification tank according to claim 1, characterized in that: The inner wall of the cleaning basket (4) on which the planting soil layer (8) is laid is provided with a geotextile, and the planting soil layer (8) is laid on the geotextile.

4. The ecological purification tank according to claim 1, characterized in that: The aperture of the second drainage pipe (3) is larger than the aperture of the cleaning basket. The second drainage pipe (3) is provided with a water permeable hole (10). The outer periphery of the second drainage pipe (3) at the water permeable hole is wrapped with a geotextile. The connection between the second drainage pipe (3) and the purification tank (2) is located in the fine sand layer (7).

5. The ecological purification tank according to claim 1, characterized in that: The connection between one end of the outlet of the first drainage pipe (1) and the purification tank (2) is located on the pebble layer (5); The inlet of the first drainage pipe (1) is connected to a household well (11), and a basket grille (12) is arranged in the household well (11).

6. The ecological purification tank according to claim 1, characterized in that: A medium-coarse sand cushion layer (13) is laid on the bottom of the purification tank (2).

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