Artificial wetland device for treating wastewater in arid region

Abstract

The utility model relates to the field of arid region wastewater treatment, in particular to an artificial wetland device for arid region wastewater treatment. The wetland device comprises a container made of organic glass, a water distribution channel (1) is arranged in the middle of the container made of organic glass, the water distribution channel (1) is arranged at the high position of a vertical flow wetland (2), staggered top pipelines (5) are arranged on the vertical flow wetland (2), a water collection channel A (3) is arranged on the side of the vertical flow wetland (2), the water collection channel A (3) is located at the relatively low position of the vertical flow wetland (2), and the water collection channel A (3) is communicated with the vertical flow wetland (2). A horizontal subsurface flow constructed wetland (16) is arranged on the side of the water collecting channel A (3), a water collecting channel B (4) is arranged on the side of the horizontal subsurface flow constructed wetland (16), and a plurality of groups of bottom pipelines (6) are arranged in the water collecting channel A (3).

Description

Technical Field

[0001] The utility model relates to the field of wastewater treatment in arid areas, in particular to an artificial wetland device used for wastewater treatment in arid areas. Background Art

[0002] Arid areas refer to areas with arid climates, accounting for about 30% of the land area. Their common characteristics are: little precipitation but large variability, generally large daily and annual temperature differences, possible evaporation far exceeding precipitation, much wind and sand, few clouds, and strong sunshine.

[0003] Wastewater treatment in arid areas is an issue that needs to be studied, because water resources are precious. If water purification is not carried out in arid areas, it will greatly affect the full utilization of water resources.

[0004] CN203602454U discloses a technology of a composite flow artificial wetland structure for treating chromium-containing wastewater, which belongs to a multi-stage self-flowing water system. It does not have a complex layered treatment structure, and there is no solution for combining the vertical purification system with the horizontal purification system; CN203781972U modular livestock and poultry breeding wastewater harmless resource treatment system adopts a complex industrial system, which is inconsistent with the basic idea of ​​this patent; CN109281371A discloses a solution for a wastewater ecological treatment system for cold and arid areas: the main body includes a vegetation recovery layer above the permafrost layer, a subsurface layer and an impermeable layer below the permafrost layer; the subsurface layer includes a front-end gabion part and a multi-media filler layer, and there is no solution for combining the vertical purification system with the horizontal purification system.

[0005] In summary, the defects of the prior art are: there is no solution for combining a vertical purification system with a horizontal purification system; at the same time, arid areas also have the following technical defects: plants are difficult to mature; the disadvantage of the horizontally layered purification structure arranged up and down is that the water flow rate is too fast, so there is a certain limitation on the water purification effect. Utility Model Content

[0006] Purpose of the utility model: to provide a better artificial wetland device for wastewater treatment in arid areas. The specific purpose can be seen in the multiple substantial technical effects in the specific implementation part.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An artificial wetland device for wastewater treatment in arid areas, characterized in that the wetland device comprises a container of organic glass structure, a water distribution channel 1 is arranged in the middle of the organic glass container, the water distribution channel 1 is arranged at a high position of a vertical flow wetland 2, top pipes 5 that are staggered with each other are arranged on the vertical flow wetland 2, a water collection channel A3 is arranged on the side of the vertical flow wetland 2, the water collection channel A3 is located at a relatively low position of the vertical flow wetland 2, a horizontal submerged flow artificial wetland 16 is arranged on the side of the water collection channel A3, a water collection channel B4 is arranged on the side of the horizontal submerged flow artificial wetland 16, and multiple groups of bottom pipes 6 are arranged in the water collection channel A3.

[0009] A further technical solution of the present invention is that the bottom of the vertical flow wetland 2 is higher than the top surface of the horizontal subsurface flow artificial wetland 16 .

[0010] A further technical solution of the utility model is that the vertical flow wetland 2 is arranged with a 0.5-2 mm particle size coarse sand layer 11, a 10-30 mm particle size pebble layer 12, a mixed filler 13, a 5-10 mm particle size pebble layer 14, and a 10-30 mm particle size pebble layer 2 15 in sequence from top to bottom.

[0011] A further technical solution of the utility model is that the horizontal subsurface flow artificial wetland 16 is arranged in sequence with a first row of 10-35 mm diameter pebbles 18, a first row of 8-10 mm diameter expanded clay 19, a first row of 7-9 mm diameter volcanic rocks 20, 5-8 mm diameter zeolite 21, a second row of 7-9 mm diameter volcanic rocks 22, a second row of 8-10 mm diameter expanded clay 23, and a second row of 10-35 mm diameter pebbles 24.

[0012] A further technical solution of the present invention is that coarse sand 10 with a particle size of 3-5 mm is arranged on the multiple rows of materials in the horizontal subsurface flow artificial wetland 16 .

[0013] A further technical solution of the utility model is that the first row of 10-35 mm diameter pebbles 18, the first row of 8-10 mm diameter expanded clay 19, the first row of 7-9 mm diameter volcanic rocks 20, the second row of 7-9 mm diameter volcanic rocks 22, the second row of 8-10 mm diameter expanded clay 23, and the second row of 10-35 mm diameter pebbles 24 are all arranged obliquely.

[0014] A further technical solution of the utility model is that the zeolite 21 with a particle size of 5-8 mm is arranged in an inverted trapezoidal shape.

[0015] A further technical solution of the present invention is that a plurality of groups of reoxygenation pipes 8 are arranged in the middle of the horizontal submerged flow artificial wetland 16 .

[0016] A further technical solution of the utility model is that purification plants are planted on the vertical flow wetland 2 and the horizontal subsurface flow artificial wetland 16, and the purification plants are wetland plants iris and reed.

[0017] A further technical solution of the present invention is that the water collection channel B4 is connected to the water outlet pipe.

[0018] The utility model adopting the above technical scheme has the following beneficial effects compared with the prior art: in view of the defects of the prior art "there is no scheme combining a vertical purification system and a horizontal purification system; at the same time, arid areas also have the following technical defects: plants are difficult to mature; the disadvantage of the horizontal layered purification structure arranged up and down is that the water flow rate is too fast, so there is a certain limitation on the water purification effect," this patent creates a horizontal subsurface artificial wetland that can be combined with continuous infiltration and can fully purify, which can provide better purification effect and provide sufficient purification time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to further illustrate the utility model, the following is further described in conjunction with the accompanying drawings:

[0020] Figure 1 It is a top view of the utility model;

[0021] Figure 2 Provide a plan for laying fill for vertical subsurface constructed wetlands;

[0022] Figure 3 Layout diagram of horizontal subsurface flow artificial wetland fill,

[0023] Among them: 1. water distribution channel, 2. vertical flow wetland, 3. water collection channel A, 4. water collection channel B, 5. top pipe, 6. bottom pipe, 7. organic glass, 8. reoxygenation pipe, 9. water distribution channel wall, 10. 3-5 mm coarse sand, 11. 0.5-2 mm coarse sand layer, 12. 10-30 mm pebble layer, 13. mixed filler, 131.7-9 mm volcanic rock, 132.5-8 mm zeolite, 133.8-10 mm ceramsite, 14 .5-10 mm pebble layer, 15.10-30 mm pebble layer II, 16. Horizontal subsurface flow artificial wetland, 17. Collection pipe, 18. First row of 10-35 mm pebble, 19. First row of 8-10 mm ceramsite, 20. First row of 7-9 mm volcanic rock, 21.5-8 mm zeolite, 22. Second row of 7-9 mm volcanic rock, 23. Second row of 8-10 mm ceramsite, 24. Second row of 10-35 mm pebbles. DETAILED DESCRIPTION

[0024] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or position relationship shown in the accompanying drawings, which 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 cannot be understood as a limitation on the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] This patent provides a variety of parallel solutions. The different expressions are improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any fixing method such as thread fixing, bolt fixing or glue bonding.

[0027] Embodiment 1: Combination Figure 1 and Figure 2; An artificial wetland device for wastewater treatment in arid areas, characterized in that the wetland device comprises a container of organic glass structure, a water distribution channel 1 is arranged in the middle of the organic glass container, the water distribution channel 1 is arranged at a high position of a vertical flow wetland 2, top pipes 5 that are staggered with each other are arranged on the vertical flow wetland 2, a water collection channel A3 is arranged on the side of the vertical flow wetland 2, the water collection channel A3 is located at a relatively low position of the vertical flow wetland 2, a horizontal submerged flow artificial wetland 16 is arranged on the side of the water collection channel A3, a water collection channel B4 is arranged on the side of the horizontal submerged flow artificial wetland 16, and multiple groups of bottom pipes 6 are arranged in the water collection channel A3. The substantial technical effect of the technical solution herein and its implementation process, namely the basic functions, are as follows: in view of the defects of the prior art "there is no solution combining a vertical purification system with a horizontal purification system; at the same time, arid areas also have the following technical defects: plants are difficult to mature; the disadvantage of the horizontally layered purification structure arranged up and down is that the water flow rate is too fast, so there is a certain limitation on the water purification effect," this patent creates a horizontal subsurface artificial wetland that can be combined with continuous infiltration and can fully purify, which can provide better purification effect and provide sufficient purification time.

[0028] This patent can remove nitrogen and phosphorus pollutants from water bodies through matrix physical adsorption, chemical precipitation, plant absorption and microbial degradation. 1 The wastewater in the water distribution channel flows into the vertical flow wetland from the top through the water distribution pipe and flows out from the bottom to the water collection area A. The water flow power is generated by adjusting the height difference between the wastewater inlet and outlet, so that the wastewater is treated through the filler layer. 2 The wastewater after preliminary purification enters the horizontal flow wetland from the bottom of the water collection channel A through the pipe, and flows out from the bottom to the water collection channel B after being treated again. 3 The insoluble organic matter in the wastewater can be quickly intercepted and utilized by microorganisms through the sedimentation and filtration of the wetland, and the soluble organic matter in the wastewater can be decomposed and removed through the adsorption, absorption and biological metabolism process of the plant root biofilm. 4 The vertical flow wetland has a strong nitrification ability. The vertical height is different and the oxygen concentration is different, which meets the growth of microorganisms with different oxygen requirements and has a good removal effect on ammonia nitrogen. 5 The flow state of horizontal subsurface artificial wetland is plug flow, and the bed is always in a water-filled state, which makes the reoxygenation effect poor. It is easy to form an anaerobic environment, which is conducive to anaerobic denitrification and has a better effect on the removal of total nitrogen.

[0029] Embodiment 2: As a further solution, the bottom of the vertical flow wetland 2 is higher than the top surface of the horizontal subsurface flow artificial wetland 16. The substantial technical effect and implementation process of the technical solution herein, i.e., the basic function, are as follows: Therefore, after self-flow in a step-by-step manner, horizontal purification can be performed gradually.

[0030] Embodiment 3: As a further solution, the vertical flow wetland 2 is sequentially arranged from top to bottom with a 0.5-2 mm coarse sand layer 11, a 10-30 mm pebble layer 12, a mixed filler 13, a 5-10 mm pebble layer 14, and a 10-30 mm pebble layer 2 15. The substantial technical effect of the technical solution here and its implementation process, i.e., the basic function, are as follows: This embodiment provides a specific layered structure, and similar implementation structures are within the protection scope of this patent.

[0031] Embodiment 4: As a further solution, the horizontal subsurface flow artificial wetland 16 is sequentially arranged with a first row of 10-35 mm diameter pebbles 18, a first row of 8-10 mm diameter ceramsite 19, a first row of 7-9 mm diameter volcanic rocks 20, a 5-8 mm diameter zeolite 21, a second row of 7-9 mm diameter volcanic rocks 22, a second row of 8-10 mm diameter ceramsite 23, and a second row of 10-35 mm diameter pebbles 24. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: This embodiment provides a specific hierarchical structure, and similar implementation structures are within the protection scope of this patent.

[0032] Embodiment 5: As a further solution, coarse sand 10 with a particle size of 3-5 mm is arranged on the multiple rows of materials in the horizontal subsurface flow artificial wetland 16. The substantial technical effect and the realization process of the technical solution here, that is, the basic function, are as follows: Therefore, it is convenient to plant plants.

[0033] Embodiment 6: As a further solution, the first row of 10-35 mm diameter pebbles 18, the first row of 8-10 mm diameter ceramsite 19, the first row of 7-9 mm diameter volcanic rocks 20, the second row of 7-9 mm diameter volcanic rocks 22, the second row of 8-10 mm diameter ceramsite 23, and the second row of 10-35 mm diameter pebbles 24 are all arranged obliquely. The substantial technical effect and its realization process, i.e., the basic function of the technical solution here are as follows: the oblique arrangement provides a more complex layered interface for the gradual and slow flow of water, thus facilitating the turbulent purification of water flow in the purification part. Wetlands can remove nitrogen and phosphorus pollutants in water bodies through matrix physical adsorption, chemical precipitation, plant absorption and microbial degradation, and are green, environmentally friendly, safe, and low in cost. The wetland matrix is ​​made of zeolite, volcanic rock and expanded clay of different particle sizes, which are laid in sequence according to appropriate proportions and thicknesses. It has the characteristics of good water permeability, large porosity and corrosion resistance. In addition to its own function of adsorbing pollutant particles, it can also transport nutrients and provide support for plants. Its loose gaps can also enhance oxygen diffusion in a flooded environment.

[0034] Embodiment 7: As a further solution, the zeolite 21 with a particle size of 5-8 mm is arranged in an inverted trapezoidal shape.

[0035] Embodiment 8: As a further solution, multiple groups of reoxygenation pipes 8 are arranged in the middle of the horizontal subsurface flow artificial wetland 16. The substantial technical effect and the realization process, i.e., the basic function, of the technical solution here are as follows: reoxygenation, i.e., re-aeration, can be realized. This is the process of dispersing dissolved oxygen from the atmosphere into the water body.

[0036] Embodiment 9: As a further solution, purification plants are planted on the vertical flow wetland 2 and the horizontal subsurface flow artificial wetland 16, and the purification plants are wetland plants iris and reed. The substantial technical effect and its realization process, i.e., the basic function of the technical solution here are as follows: the wetland plants iris and reed can absorb nitrogen, phosphorus and minerals as their own nutrients, and their root system can improve the hydraulic efficiency of the entire system, while maintaining the stability of the water cycle, providing a suitable environment for the sedimentation and adsorption of pollutants. The wetland matrix and the root system of the plants provide a good carrier for the growth of microorganisms. There are many kinds of wetland microorganisms, which can directly absorb soluble organic matter in the water during their growth and reproduction, and transform and utilize insoluble organic matter by adsorption and sedimentation, thereby achieving the purpose of efficient degradation of pollutants.

[0037] Embodiment 10: As a further solution, the water collection channel B4 is connected to the water outlet pipe.

[0038] Innovatively, each of the above effects exists independently, and a set of structures can be used to combine the above results.

[0039] It should be noted that the multiple solutions provided by this patent include the basic solution itself, which are independent of each other and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0040] 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 utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the protection required.

Claims

1. An artificial wetland device for wastewater treatment in arid areas, characterized in that: The wetland device comprises a container made of organic glass, wherein a water distribution channel (1) is arranged in the middle of the container made of organic glass, the water distribution channel (1) is arranged at a high position of a vertical flow wetland (2), top pipes (5) interlaced with each other are arranged on the vertical flow wetland (2), a water collection channel A (3) is arranged on the side of the vertical flow wetland (2), the water collection channel A (3) is located at a relatively low position of the vertical flow wetland (2), a horizontal subsurface flow artificial wetland (16) is arranged on the side of the water collection channel A (3), a water collection channel B (4) is arranged on the side of the horizontal subsurface flow artificial wetland (16), and a plurality of groups of bottom pipes (6) are arranged in the water collection channel A (3); The vertical flow wetland (2) is sequentially arranged from top to bottom with a 0.5-2 mm coarse sand layer (11), a 10-30 mm pebble layer 1 (12), a mixed filler (13), a 5-10 mm pebble layer (14), and a 10-30 mm pebble layer 2 (15); The horizontal subsurface artificial wetland (16) is sequentially arranged with a first row of 10-35 mm diameter pebbles (18), a first row of 8-10 mm diameter ceramsite (19), a first row of 7-9 mm diameter volcanic rocks (20), a 5-8 mm diameter zeolite (21), a second row of 7-9 mm diameter volcanic rocks (22), a second row of 8-10 mm diameter ceramsite (23), and a second row of 10-35 mm diameter pebbles (24); Coarse sand (10) with a particle size of 3 to 5 mm is arranged on the multiple rows of materials in the horizontal subsurface flow artificial wetland (16); The first row of 10-35 mm diameter pebbles (18), the first row of 8-10 mm diameter ceramsite (19), the first row of 7-9 mm diameter volcanic rocks (20), the second row of 7-9 mm diameter volcanic rocks (22), the second row of 8-10 mm diameter ceramsite (23), and the second row of 10-35 mm diameter pebbles (24) are all arranged obliquely.

2. The artificial wetland device for wastewater treatment in arid areas according to claim 1, characterized in that: The bottom of the vertical flow wetland (2) is higher than the top surface of the horizontal subsurface flow artificial wetland (16).

3. The artificial wetland device for wastewater treatment in arid areas according to claim 1, characterized in that: The zeolite (21) with a particle size of 5-8 mm is arranged in an inverted trapezoidal shape.

4. The artificial wetland device for wastewater treatment in arid areas according to claim 1, characterized in that: A plurality of groups of reoxygenation pipes (8) are arranged in the middle of the horizontal subsurface flow artificial wetland (16).

5. The artificial wetland device for wastewater treatment in arid areas according to claim 1, characterized in that: Purifying plants are planted on the vertical flow wetland (2) and the horizontal subsurface flow artificial wetland (16), and the purifying plants are wetland plants iris and reed.

6. An artificial wetland device for wastewater treatment in arid areas according to any one of claims 1 to 5, characterized in that: The water collection channel B (4) is connected to the water outlet pipe.

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