Anti-blocking constructed wetland

Abstract

The utility model relates to the technical field of constructed wetlands, and provides an anti-clogging constructed wetland which comprises two valve wells and a rammed earth layer arranged between the two valve wells, an anti-seepage film is laid on the rammed earth layer, a protective layer is arranged on the anti-seepage film, a purification assembly for purifying sewage is arranged on the upper portion of the protective layer, and an anti-clogging layer is arranged on the upper portion of the purification assembly. And a sewage conveying assembly with an anti-blocking function is arranged in the valve well. Sewage is purified through the purification assembly, the effect of conveying the sewage into the constructed wetland is achieved through the conveying assembly, and meanwhile, the pretreatment assembly arranged on the water inlet pipe can pretreat solid impurities in the sewage, so that the burden of the purification assembly can be relieved, and the sewage treatment efficiency is improved. In addition, when the sewage is conveyed, a worker can change the operation mode of the wetland by opening and closing the valve, the substrate filler in the purification assembly is effectively prevented from being blocked by utilizing the change of the water flow direction, and the later operation and maintenance workload and cost are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial wetlands, in particular to an anti-clogging artificial wetland. Background Art

[0002] As a new technology for sewage ecological treatment engineering, artificial wetlands use the triple synergistic effects of physics, chemistry and biology in natural ecosystems to purify sewage, improve water quality and achieve ecological treatment of wastewater. However, in the actual purification process, some solid impurities carried in sewage will flow with the flow of water and move into the gaps in artificial wetlands used to filter sewage impurities. Because the particle size of these solid impurities is generally larger than these gaps, the impurities will remain in the gaps and complete the separation from the sewage. However, after a long period of sewage purification, the impurities left in the gaps will increase, and finally block the gaps, affecting the flow of sewage, thereby reducing the sewage purification efficiency. Utility Model Content

[0003] The utility model aims to solve the shortcoming that the existing artificial wetland will affect the sewage purification due to internal blockage after long-term sewage purification, and proposes an anti-clogging artificial wetland.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An anti-clogging artificial wetland comprises two valve wells and a rammed earth layer arranged between the two valve wells, an impermeable membrane is laid on the rammed earth layer, a protective layer is arranged on the impermeable membrane, a purification component for purifying sewage is arranged on the upper part of the protective layer, and a sewage conveying component with an anti-clogging function is arranged in the valve well;

[0006] The conveying component includes a connecting pipe 1 and a connecting pipe 2 laid in the purification component, and the connecting pipe 1 is located above the connecting pipe 2. A plurality of connecting holes are provided on the outside of the connecting pipe 1 and the connecting pipe 2. The left ends of the connecting pipe 1 and the connecting pipe 2 are connected to a water inlet pipe, and the water inlet pipe is provided with a pretreatment component for pre-treating sewage. The two ends of the connecting pipe 1 are respectively provided with a ball valve 2 and a ball valve 3, and the two ends of the connecting pipe 2 are respectively provided with a ball valve 1 and a ball valve 4.

[0007] Preferably, the pretreatment component includes a pretreatment sleeve arranged on the water inlet pipe, the inner cavity of the pretreatment sleeve is provided with a water supply pipe connected to the water inlet pipe, the water supply pipe is provided with a water supply port, the upper part of the water supply pipe is sleeved with a filter cone, and the bottom of the pretreatment sleeve is connected to a debris removal pipe.

[0008] Preferably, the purification component comprises a medium-coarse sand layer laid on a protective layer, a ceramsite layer is laid on the upper part of the medium-coarse sand layer, a planting layer is laid above the ceramsite layer, and a filling frame is laid on the protective layer.

[0009] Preferably, the medium-coarse sand layer includes medium-coarse sand with a diameter of 0.1-0.5 cm filled in a filling frame, the expanded clay layer includes expanded clay with a diameter of 3 cm filled in the filling frame, and the planting layer includes aquatic cannas planted in the filling frame.

[0010] Preferably, a guide groove and a positioning groove are provided on the filling frame, a guide block engaging with the guide groove is provided on one side of the filling frame, and a positioning rod engaging with the positioning groove is provided at the bottom of the filling frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model realizes the purification treatment of sewage through the purification component, and achieves the effect of conveying sewage to the artificial wetland by using the conveying component. At the same time, the pretreatment component arranged on the water inlet pipe can pretreat the solid impurities in the sewage, thereby reducing the burden of the purification component and reducing the probability of its blockage. In addition, when conveying sewage, the staff can change the operation mode of the wetland by switching the valve, and use the change of water flow direction and alternating flushing in positive and reverse directions to effectively prevent the matrix filler in the purification component from being blocked, thereby greatly reducing the workload and cost of later operation and maintenance.

[0013] 2. The utility model converts a fixed packing layer into a modular packing layer by setting a packing frame, so that the stratification of the artificial wetland can be adjusted according to actual conditions, and after long-term operation, some packing modules can be flexibly replaced in a targeted manner, and the packing modules can be increased or decreased according to the actual water volume, thereby ensuring the treatment effect while improving the convenience of artificial wetland construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the pre-treatment component of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the packing frame of the utility model;

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0018] In the figure: 1. valve well; 2. rammed earth layer; 3. anti-seepage membrane; 4. protective layer; 5. purification component; 51. medium-coarse sand layer; 52. expanded clay layer; 53. planting layer; 54. stuffing frame; 55. guide block; 56. guide groove; 57. positioning groove; 58. positioning rod; 6. conveying component; 61. connecting pipe one; 62. connecting pipe two; 63. ball valve one; 64. ball valve two; 65. water inlet pipe; 66. pretreatment component; 661. pretreatment sleeve; 662. filter cone; 663. water supply pipe; 664. water supply port; 665. debris removal pipe; 67. ball valve three; 68. ball valve four. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Artificial wetlands are developed from natural wetlands. They are wetland ecosystems artificially designed and constructed according to people's needs by simulating the structure and function of natural wetlands, selecting certain geographical locations and terrains. According to the flow of sewage, they are divided into surface flow artificial wetlands, horizontal subsurface flow artificial wetlands and vertical subsurface flow artificial wetlands. Compared with traditional sewage treatment technologies, artificial wetland sewage treatment systems have the characteristics of stable effluent water quality, low investment, low energy consumption, strong impact resistance, simple operation and low operating costs. At the same time, it organically combines sewage treatment and environmental ecology, beautifies the environment while effectively treating sewage, creates ecological landscapes, and brings environmental benefits and certain economic benefits. However, after a long period of sewage purification, the purification matrix in the artificial wetland is prone to blockage, which affects the subsequent sewage purification.

[0021] Embodiment 1

[0022] After a long period of sewage purification, the existing artificial wetlands will be blocked internally, which will affect the sewage purification. Figure 1-Figure 4The present embodiment proposes an anti-clogging artificial wetland, which can effectively prevent the clogging of the matrix filler in the purification component by changing the direction of water flow and alternating flushing in positive and negative directions, greatly reducing the workload and cost of later operation and maintenance. It mainly consists of two valve wells 1 and a rammed earth layer 2 arranged between the two valve wells 1. An impermeable membrane 3 is laid on the rammed earth layer 2, and a protective layer 4 is arranged on the impermeable membrane 3. A purification component 5 for purifying sewage is arranged on the upper part of the protective layer 4. A sewage conveying component 6 with an anti-clogging function is arranged in the valve well 1. When constructing the artificial wetland, it is necessary to dig a tunnel of a suitable size on the ground, and then compact the bottom of the pit. After compaction, an impermeable membrane 3 is laid on the bottom of the pit, and then a protective layer 4 for protecting the impermeable membrane 3 is arranged on the impermeable membrane 3. Finally, a purification component 5 is arranged on the protective layer 4. After construction is completed, the sewage is input into the purification component 5 through the conveying component 6, and is discharged after being purified by the purification component 5, thereby completing the purification operation of the sewage.

[0023] In order to solve the problem of clogging of the matrix filler in the purification component 5, in this embodiment, through the arrangement of the conveying component 6, the solid impurities in the sewage can be initially filtered through the pretreatment component 66 to reduce the probability of clogging, and then the matrix filler in the purification component 5 can be effectively prevented from being blocked by changing the direction of the water flow. Figure 1 As shown, the conveying component 6 includes a connecting pipe 1 61 and a connecting pipe 2 62 laid in the purification component 5, and the connecting pipe 1 61 is located above the connecting pipe 2 62, and a plurality of connecting holes are opened on the outside of the connecting pipe 1 61 and the connecting pipe 2 62. The left ends of the connecting pipe 1 61 and the connecting pipe 2 62 are both connected with a water inlet pipe 65, and the water inlet pipe 65 is provided with a pretreatment component 66 for pretreatment of sewage. The two ends of the connecting pipe 1 61 are respectively provided with a ball valve 2 64 and a ball valve 3 67, and the two ends of the connecting pipe 2 62 are respectively provided with a ball valve 1 63 and a ball valve 4 68. In this embodiment, the sewage is introduced into the purification component 5 through the water inlet pipe 65, and the pretreatment component 66 arranged on the water inlet pipe 65 can filter some solid impurities in the sewage, thereby reducing the burden of the purification component 5. , delaying the time of its blockage. When transporting sewage, the staff can change the operation mode of the wetland by opening and closing the valves, and use the changes in the direction of the water flow and the alternating flushing in the positive and reverse directions to effectively prevent the matrix filler in the purification component 5 from being blocked, greatly reducing the workload and cost of later operation and maintenance. When the ball valve two 64 and the ball valve four 68 are opened, and the ball valve three 67 and the ball valve one 63 are closed, it is a downward submerged wetland, and the connecting pipe one 61 takes in water. The sewage is purified from top to bottom through the purification component 5 and is discharged after being collected by the connecting pipe two 62. When the ball valve three 67 and the ball valve one 63 are opened, and the ball valve two 64 and the ball valve four 68 are closed, it is an upward submerged wetland, and the connecting pipe two 62 discharges water. The sewage is filtered from the bottom to top through the purification component 5 and is discharged after being collected by the connecting pipe one 61.

[0024] Sewage contains many solid impurities. After entering the wetland, these solid impurities will accelerate the clogging speed inside the wetland. In this embodiment, the solid impurities in the sewage are pre-treated by the setting of the pre-treatment component 66, so as to reduce the burden of the purification component 5 and reduce the probability of its clogging. The pre-treatment component 66 includes a pre-treatment sleeve 661 arranged on the water inlet pipe 65. The inner cavity of the pre-treatment sleeve 661 is provided with a water replenishment pipe 663 connected to the water inlet pipe 65. The water replenishment pipe 663 is provided with a water replenishment port 664. The upper part of the water replenishment pipe 663 is provided with a filter cone 662. The bottom of the pretreatment sleeve 661 is connected to a debris removal pipe 665. After the sewage enters the pretreatment sleeve 661, it will be blocked by the filter cone 662. The sewage will flow downward along the inner wall of the pretreatment sleeve 661, thereby effectively preventing impurities from flowing directly from the water replenishment port 664. Therefore, most of the solid impurities will be deposited at the bottom of the pretreatment sleeve 661 under the action of their own gravity. When the water surface is higher than the water replenishment port 664, the floating objects in the sewage will be located outside the filter cone 662. Under the action of their own buoyancy, it is not easy to break through the filter cone 662 and enter the water replenishment port 664. Figure 2 As shown, the water replenishment port 664 is located in the middle of the pretreatment sleeve 661, so the sewage that has been preliminarily purified will enter the water replenishment pipe 663 through the water replenishment port 664, and then enter the water inlet pipe 65 from the water replenishment pipe 663, thereby reducing the purification pressure of the purification component 5, and the filtered impurities will remain in the pretreatment sleeve 661. After a period of time, the impurity removal pipe 665 can be opened to clean the impurities.

[0025] The purification component 5 includes a medium-coarse sand layer 51 laid on the protective layer 4, a ceramsite layer 52 is laid on the upper part of the medium-coarse sand layer 51, a planting layer 53 is laid above the ceramsite layer 52, and a filling frame 54 is laid on the protective layer 4. During purification, impurities in the sewage can be adsorbed and separated through layer-by-layer filtration of the medium-coarse sand layer 51, the ceramsite layer 52 and the planting layer 53, thereby completing the purification of the sewage. Moreover, in this embodiment, through the setting of the filling frame 54, the medium-coarse sand layer 51, the ceramsite layer 52 and the planting layer 53 are converted into a modular filling layer design, so that the stratification of the artificial wetland can be adjusted according to actual conditions, and after long-term operation, some filling modules can be flexibly replaced in a targeted manner, and the filling modules can be increased or decreased according to the actual water volume, thereby ensuring the treatment effect while improving the convenience of artificial wetland construction.

[0026] The medium-coarse sand layer 51 includes medium-coarse sand with a diameter of 0.5 cm filled in the filling frame 54, the expanded clay layer 52 includes expanded clay with a diameter of 3 cm filled in the filling frame 54, and the planting layer 53 includes aquatic cannas planted in the filling frame 54. The provision of aquatic plants such as aquatic cannas can remove nitrogen and phosphorus components in sewage and reduce eutrophication in sewage.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, the technical solution proposed in the first embodiment is used to solve the disadvantage that the existing artificial wetland will affect the sewage purification due to internal blockage after long-term sewage purification. However, since each packing layer in the purification component 5 is basically formed by stacking the packing frame 54, compared with the artificial wetland constructed in a conventional manner, the stability is poor and it is easy to collapse under the action of external force.

[0029] Reference Figure 1-Figure 4 A guide groove 56 and a positioning groove 57 are provided on the packing frame 54, a guide block 55 engaged with the guide groove 56 is provided on one side of the packing frame 54, and a positioning rod 58 engaged with the positioning groove 57 is provided at the bottom of the packing frame 54. In this embodiment, the guide groove 56, the positioning groove 57, the guide block 55 and the positioning rod 58 are provided on the packing frame 54, so that when the packing frames 54 are stacked, they will be firmly engaged together, so that each packing layer forms a whole and is not easily pushed down by external force, thereby increasing the performance of resisting impact loads and improving the stability of the treatment effect.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging artificial wetland, comprising two valve wells (1), and a rammed earth layer (2) arranged between the two valve wells (1), an impermeable membrane (3) being laid on the rammed earth layer (2), and a protective layer (4) being provided on the impermeable membrane (3), wherein: A sewage purification component (5) is provided on the upper part of the protective layer (4), and a sewage conveying component (6) with an anti-clogging function is provided in the valve well (1); The conveying assembly (6) comprises a connecting pipe 1 (61) and a connecting pipe 2 (62) laid in the purification assembly (5), and the connecting pipe 1 (61) is located above the connecting pipe 2 (62), and a plurality of connecting holes are provided on the outside of the connecting pipe 1 (61) and the connecting pipe 2 (62), and the left ends of the connecting pipe 1 (61) and the connecting pipe 2 (62) are both connected to a water inlet pipe (65), and the water inlet pipe (65) is provided with a pretreatment assembly (66) for pretreatment of sewage, and the two ends of the connecting pipe 1 (61) are respectively provided with a ball valve 2 (64) and a ball valve 3 (67), and the two ends of the connecting pipe 2 (62) are respectively provided with a ball valve 1 (63) and a ball valve 4 (68).

2. The anti-clogging artificial wetland according to claim 1, characterized in that: The pretreatment assembly (66) comprises a pretreatment sleeve (661) arranged on a water inlet pipe (65); a water replenishment pipe (663) communicating with the water inlet pipe (65) is arranged in an inner cavity of the pretreatment sleeve (661); a water replenishment port (664) is provided on the water replenishment pipe (663); and a filter cone (662) is sleeved on the upper part of the water replenishment pipe (663).

3. The anti-clogging artificial wetland according to claim 2, characterized in that: The bottom of the pretreatment sleeve (661) is connected to a de-impurity pipe (665).

4. The anti-clogging artificial wetland according to claim 1, characterized in that: The purification component (5) comprises a medium-coarse sand layer (51) laid on a protective layer (4), a ceramsite layer (52) is laid on the upper part of the medium-coarse sand layer (51), a planting layer (53) is laid above the ceramsite layer (52), and a filling frame (54) is laid on the protective layer (4).

5. The anti-clogging artificial wetland according to claim 4, characterized in that: The medium-coarse sand layer (51) comprises medium-coarse sand with a diameter of 0.1-0.5 cm filled in a filling frame (54), the ceramsite layer (52) comprises ceramsite with a diameter of 3 cm filled in a filling frame (54), and the planting layer (53) comprises aquatic cannas planted in the filling frame (54).

6. The anti-clogging artificial wetland according to claim 5, characterized in that: The packing frame (54) is provided with a guide groove (56) and a positioning groove (57); a guide block (55) engaged with the guide groove (56) is provided on one side of the packing frame (54); and a positioning rod (58) engaged with the positioning groove (57) is provided at the bottom of the packing frame (54).

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