CN218539430U - High-efficiency artificial wetland system - Google Patents
High-efficiency artificial wetland system Download PDFInfo
- Publication number
- CN218539430U CN218539430U CN202222384494.0U CN202222384494U CN218539430U CN 218539430 U CN218539430 U CN 218539430U CN 202222384494 U CN202222384494 U CN 202222384494U CN 218539430 U CN218539430 U CN 218539430U
- Authority
- CN
- China
- Prior art keywords
- wetland
- flow wetland
- subsurface flow
- vertical
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 239000010865 sewage Substances 0.000 claims abstract description 27
- 238000000746 purification Methods 0.000 claims description 36
- 238000005192 partition Methods 0.000 claims description 16
- 241000196324 Embryophyta Species 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 244000205574 Acorus calamus Species 0.000 claims description 3
- 241000383620 Allium mongolicum Species 0.000 claims description 3
- 235000011996 Calamus deerratus Nutrition 0.000 claims description 3
- 235000005273 Canna coccinea Nutrition 0.000 claims description 3
- 240000008555 Canna flaccida Species 0.000 claims description 3
- 244000211187 Lepidium sativum Species 0.000 claims description 3
- 235000007849 Lepidium sativum Nutrition 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 241000209082 Lolium Species 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 241000205578 Thalictrum Species 0.000 claims description 2
- 240000001398 Typha domingensis Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000233948 Typha Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- -1 phosphorus ions Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Treatment Of Biological Wastes In General (AREA)
Abstract
The utility model provides a high-efficiency constructed wetland system, which belongs to the technical field of constructed wetland, wherein a vertical subsurface flow wetland is arranged inside, and a horizontal subsurface flow wetland is arranged on an outer ring of the vertical subsurface flow wetland; the vertical subsurface flow wetland adopts a central water inlet pipe to feed water, sewage enters from the central water inlet pipe, and reaches the horizontal flow wetland annular water channel after being distributed by water distribution pipes which are symmetrically and crossly arranged and catched by the vertical flow wetland annular water channel; compared with the traditional rectangular wetland, the utilization rate of the ground is higher; the technical effects of more uniform water distribution, more stable operation of a wetland system and higher sewage treatment efficiency are achieved.
Description
Technical Field
The utility model relates to an environmental protection technology field, more specifically relates to a high-efficient constructed wetland system.
Background
With the development of urban scale and socioeconomic performance, urban watercourses are polluted to varying degrees. Some river channels have the problems of being incapable of surviving by some aquatic organisms due to insufficient turbidity, less clear water, more water and eutrophication, even being mixed with fishy smell and the like. Even if the river bank scene can be improved for a long time and in a large amount of economy, the scene around the river channel is affected by the sewage in the river channel.
In recent years, water pollution control technology has gradually shifted from the original centralized treatment to decentralized and on-site treatment. It is characterized in that the research of ecological process technology is more promising in recent years. The artificial wetland is applied in the ecological process technology to fully exert the potential of each component in the wetland system, thereby achieving the double benefits of environment and economy, being a cheap alternative scheme of the traditional sewage treatment process in many fields, and obtaining better effects when being applied to the fields of source control, in-situ ecological restoration, drainage basin pollution control and the like.
The traditional artificial wetland sewage treatment technology has the advantages of small investment, simple operation, low energy consumption, simple operation and maintenance management and the like, but also has a series of problems of large occupied area, easy blockage, uneven water distribution, low nitrogen removal rate and the like.
The prior art discloses a method for treating domestic sewage by a laminated vertical flow-horizontal subsurface flow combined wetland (application number 201210015622.2), a laminated vertical subsurface flow and horizontal subsurface flow combined wetland system is adopted, the subsurface flow wetland is formed by vertically nesting a plurality of independent filter bed modules, the purification efficiency is improved, and the effect of preventing blockage is achieved, but the laminated wetland still has larger structural fall and limited application range; if the artificial treatment is carried out, the investment cost is inevitably increased, and the surrounding environment is influenced. Also discloses a stacked vertical flow low-oxygen artificial wetland water treatment device (application number: 201420012251.7), which adopts a stacked structure to reduce the occupied area of the wetland and realizes the linkage between the upper layer wetland and the lower layer wetland by configuring two stages of lift pumps, reflux pumps and aerators; but still has the disadvantages of high operation energy consumption, complex structure and general dephosphorization effect.
An efficient constructed wetland system with better dephosphorization effect on the basis of small occupied area is urgently needed.
Disclosure of Invention
In view of the above problems, the present invention provides a high efficiency constructed wetland system to solve the problems of low sewage treatment efficiency and large occupied area of the constructed wetland in the prior art.
The utility model provides a high-efficiency artificial wetland system, which comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are arranged in an annular shape; the vertical subsurface flow wetland is arranged at the circle center, and the horizontal subsurface flow wetland is arranged at the outer ring of the vertical subsurface flow wetland;
the vertical subsurface flow wetland comprises a central water inlet pipe, a vertical flow wetland annular water channel and a water distribution pipe arranged between the central water inlet pipe and the vertical flow wetland annular water channel;
the horizontal subsurface flow wetland comprises a horizontal flow wetland annular water channel; sewage enters from the central water inlet pipe and reaches the horizontal flow wetland annular water channel through the water distribution pipe and the vertical flow wetland annular water channel.
Further, the preferable structure is: the ecological purification device at least comprises two levels of embedded ecological purification units, wherein each level of ecological purification unit comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are annularly arranged; wherein,
the water outlet pipe of the horizontal subsurface flow wetland of the first-stage ecological purification unit is connected with the central water inlet pipe of the vertical subsurface flow wetland of the second-stage ecological purification unit.
Further, the preferable structure is: the ecological purification device at least comprises two levels of ecological purification units connected in parallel, wherein each level of ecological purification unit comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are arranged in an annular mode.
Further, the preferable structure is: and ventilation pipelines for intermittent ventilation are arranged in the vertical subsurface flow wetland and the horizontal subsurface flow wetland.
Further, the preferable structure is: the vertical subsurface flow wetland and the horizontal subsurface flow wetland respectively comprise a substrate layer, a covering layer and a plant layer which are arranged from bottom to top in sequence;
the matrix layer is one or more of limestone, volcanic rock, zeolite, shale, ceramsite and slag;
the covering layer is planting soil or sandy soil.
Further, the preferable structure is: the plant layer is one or more of reed, cattail, calamus, canna, thalictrum ramosissimum, allium mongolicum regel, cress, rush, cane shoot and ryegrass.
Further, the preferable structure is: the water distribution pipes are arranged in the vertical subsurface flow wetland in an array way.
Further, the preferable structure is: a partition board for separating a water inlet channel and a water outlet channel is arranged in the horizontal subsurface flow wetland; the partition is annularly arranged.
Further, the preferable structure is: the distance between the bottom end of the clapboard and the bottom of the pool is 20-50 cm; the partition board is built by steel slag bricks.
Further, the preferable structure is: a double-side triangular overflow weir is arranged at the annular water channel of the vertical flow wetland, and the height difference between a water inlet weir and a water outlet weir of the double-side triangular overflow weir is 10-50 cm; the width of the weir groove is 20-80 cm; the water depth in the weir groove is 5-20 cm.
The utility model provides a high-efficient constructed wetland system has following beneficial effect as a practical efficient sewage treatment and recycle technique:
1. the whole artificial wetland system adopts a circular structure, a vertical subsurface flow wetland is arranged in the artificial wetland system, and a horizontal subsurface flow wetland is arranged on the outer ring of the vertical subsurface flow wetland; the vertical subsurface flow wetland adopts a central water inlet pipe to feed water, sewage enters from the central water inlet pipe, and reaches the horizontal flow wetland annular water channel after being distributed by water distribution pipes which are symmetrically and crossly arranged and catched by the vertical flow wetland annular water channel; compared with the traditional rectangular wetland, the utilization rate of the ground is higher; the water distribution is more uniform, the wetland system is more stable in operation, and the sewage treatment efficiency is higher;
2. the vertical subsurface flow wetland and the horizontal subsurface flow wetland are arranged in multiple stages, so that the water passing area is larger, the adaptability to the change of water quality and water quantity is strong, and the application range is wide; if the pollution concentration of the water quality of the inlet water is higher or the water quality requirement of the outlet water is improved, the stage number of ecological purification can be increased.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings.
In the drawings:
fig. 1 is a schematic structural view of a high-efficiency constructed wetland system according to an embodiment of the utility model;
fig. 2 is a schematic cross-sectional view of a high-efficiency constructed wetland system according to the embodiment of the utility model.
The same reference numbers in all figures indicate similar or corresponding features or functions.
In the figure: 1. vertical subsurface wetland; 2. horizontal subsurface flow wetland; 3. a plant layer; 4. a cover layer; 5. a substrate layer; 11. a vertical flow wetland vent pipe; 12. a vertical flow wetland annular water channel; 13. a water distribution pipe; 14. a central water inlet pipe; 21. a horizontal flow wetland breather pipe; 22. a horizontal flow wetland annular water channel; 23. a separator.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Aiming at the problems of low sewage treatment efficiency and large occupied area of the prior artificial wetland, the utility model arranges the vertical undercurrent wetland inside, and the horizontal undercurrent wetland is arranged on the outer ring of the vertical undercurrent wetland; the vertical subsurface flow wetland adopts a central water inlet pipe to feed water, sewage enters from the central water inlet pipe, and reaches the horizontal flow wetland annular water channel after being distributed by water distribution pipes which are symmetrically and crossly arranged and catched by the vertical flow wetland annular water channel; compared with the traditional rectangular wetland, the utilization rate of the ground is higher; the water distribution is more uniform, the wetland system is more stable in operation, and the sewage treatment efficiency is higher; the vertical subsurface flow wetland and the horizontal subsurface flow wetland are arranged in multiple stages, so that the stage number of ecological purification can be increased if the pollution concentration of the inflow water quality is higher or the requirement on the effluent quality is improved, the water passing area is larger, the adaptability to the change of the water quality and the water quantity is strong, and the application range is wide.
In order to explain the high-efficiency artificial wetland system provided by the utility model, the artificial wetland system is wholly explained by figures 1 and 2; wherein, fig. 1 shows a high-efficiency constructed wetland system structure according to the embodiment of the utility model; fig. 2 is a sectional view of fig. 1.
As shown in fig. 1, the high-efficiency artificial wetland system provided by the utility model comprises a vertical subsurface wetland 1 and a horizontal subsurface wetland 2 which are annularly arranged; the vertical subsurface flow wetland 1 is arranged at the circle center, and the horizontal subsurface flow wetland 2 is arranged at the outer ring of the vertical subsurface flow wetland; the vertical subsurface flow wetland 1 comprises a central water inlet pipe 14, a vertical flow wetland annular water channel 12 and a water distribution pipe 13 arranged between the central water inlet pipe 14 and the vertical flow wetland annular water channel 12; the horizontal subsurface wetland comprises a horizontal wetland annular water channel 22; sewage enters from the central water inlet pipe 14, passes through the water distribution pipe 13 and the vertical flow wetland annular water channel 12, and reaches the horizontal flow wetland annular water channel 22 through the overflow weir.
Specifically, the vertical subsurface flow wetland 1 and the horizontal subsurface flow wetland 2 respectively comprise a substrate layer 5, a covering layer 4 and a plant layer 3 which are arranged from bottom to top in sequence; the matrix layer 5 is one or more of limestone, volcanic rock, zeolite, shale, ceramsite and slag, and the wetland matrix is selected from nontoxic harmless substances which have certain mechanical strength, good chemical stability, good denitrification and dephosphorization effects and can be obtained from local materials. The grain diameter of the filler is 8-25mm, and the thickness of the main filler is 0.8-1.5m; the covering layer 4 is planting soil or sandy soil, and the laying thickness is 10cm-30cm. The plant layer 3 is formed by planting wetland plants on the covering layer, and the wetland plants are native plants which are resistant to pollution, strong in dirt-removing power, developed in root system, strong in reoxygenation capability and have a certain economic and ornamental value; can be but is not limited to one or more of reed, cattail, calamus, canna, thaliana, allium mongolicum regel, cress, rush, cane shoot and ryegrass.
It should be noted that the water distribution pipe 13 is a water pipe with through holes on the outer wall. Through the arrangement quantity and the arrangement position of the water distribution pipes, the uniformity of water distribution can be improved, and the water flow direction can be changed. In the specific implementation process, the water distribution pipes 13 are arranged in the vertical subsurface wetland. Namely, a plurality of water distribution pipes are laid along the longitudinal direction of the wetland in multiple layers. As shown in fig. 2, the mode of laying water distribution pipes in 2 layers and 4 crossed layers saves laying cost on the basis of ensuring uniform water distribution; the water distribution pipes are used for realizing the flowing and mixing of water flow in the wetland along the arrow direction, thereby realizing the effect of removing pollutants in water through the combined action of the matrix layer, the plant layer and the microorganisms in the water.
That is, the vertical subsurface wetland 1 is positioned in the middle of the artificial wetland system, water is fed by adopting the central water inlet pipe 14, distributed by the multilayer water distribution pipes 13, and finally enters the annular water channels 12 of the vertical subsurface wetland around the wetland to collect outlet water. The effluent of the vertical subsurface flow wetland 1 enters the horizontal subsurface flow wetland 2 of the outer ring. The whole wetland system adopts a circular structure, and compared with a rectangular wetland, the edge angles are reduced, and the land utilization rate is improved. The vertical subsurface flow wetland adopts a central water inlet pipe for water inlet, the inside of the vertical subsurface flow wetland is provided with water distribution pipes which are symmetrically and crossly arranged for water distribution, and an annular water channel collects water; the horizontal underflow adopts an annular water channel overflow weir to distribute water, and the annular water channel collects water. Compared with the traditional rectangular wetland, the artificial wetland system of the utility model has the advantages of favorable water conservancy conditions, more uniform water distribution and reduced wetland blocking risk; moreover, the operation is more stable, and the method is beneficial to removing more pollutants under the combined action of the substrate, the plants and the microorganisms in water.
In the specific implementation process, in order to improve the purification efficiency, the actual sewage treatment requirement is set, and the incoming water entering the artificial wetland system is as follows: 1 to 10:1 water amount, and the water enters the vertical subsurface flow wetland and the horizontal subsurface flow wetland in two parts.
As shown in fig. 2, the water treated by the vertical subsurface flow wetland 1 is uniformly led out through the overflow weir and enters the horizontal subsurface flow wetland 2, and in the horizontal subsurface flow wetland 2, the water flow surrounds the partition plate and flows along the arrow direction. Wherein, a clapboard 23 for separating a water inlet channel and a water outlet channel is arranged in the horizontal subsurface wetland 2; the partition 23 is annularly arranged.
Specifically, a double-side triangular overflow weir is arranged at the outer edge of the annular water channel 12 of the vertical flow wetland, and the height difference between a water inlet weir and a water outlet weir of the double-side triangular overflow weir is 10-50 cm; the width of the weir groove is 20-80 cm; the water depth in the weir groove is 5-20 cm. The elevation of the top end of the triangular overflow weir is lower than the bottom of the covering layer 4 of the vertical subsurface wetland 1. Water flow can be uniformly distributed and the quality of discharged water can be observed through the triangular overflow weir, and the dissolved oxygen can be increased in the water flow falling process.
It should be noted that at the joint of the triangular overflow weir and the matrix layer, in order to prevent particulate matter from entering the canal, a non-toxic, corrosion-resistant, anti-aging, and water-permeable mesh (such as geotextile) is used for wrapping, and the pore diameter of the mesh should be smaller than the particle diameter of the matrix filler. In the specific implementation process, the outer annular water channel of the horizontal subsurface flow wetland adopts a single-side triangular overflow weir, and the relevant design parameters of the overflow weir are consistent with those of the vertical subsurface flow wetland.
In a specific embodiment, the distance between the bottom end of the partition 23 and the bottom of the tank is 20-50 cm; the partition 23 is constructed of slag bricks. The partition plates are arranged between the water inlet channel and the water outlet channel, and can be arranged continuously or at intervals in the annular or oblique line direction without limitation. Wherein the partition may be, but is not limited to, a plate or a flap. The arrangement of the partition plates prolongs the hydraulic path of water flow and prolongs the treatment time of sewage in the wetland. The partition plate is made of steel slag bricks through masonry, and the steel slag is waste slag generated in the smelting industry, contains a large amount of active ions such as iron, magnesium, calcium and the like, and can adsorb, replace and remove phosphorus ions in a water body. The partition plate can be a movable wall body, and steel slag brick blocks can be replaced periodically according to the operation requirements of the wetland, so that enriched phosphorus elements are removed, the blocking risk of the filler is reduced, and the service life of the wetland is prolonged. In a specific implementation, the baffle may be an annular flat plate baffle (as shown in fig. 1).
In one embodiment, aeration pipelines for intermittent aeration are arranged in the vertical subsurface wetland 1 and the horizontal subsurface wetland 2; specifically, a vertical flow wetland vent pipe 11 is arranged in the vertical subsurface flow wetland 1; a horizontal flow wetland vent pipe 21 is arranged in the horizontal subsurface flow wetland 2. Specifically, the aeration pipelines which can run intermittently are arranged in the vertical subsurface flow wetland and the horizontal subsurface flow wetland, so that the reoxygenation capacity of the wetland can be further increased, and organic pollutants in water can be removed. Wherein, the breather pipes are positioned at the tail end of the water distribution pipe of the vertical subsurface flow wetland and inside the horizontal subsurface flow wetland and are uniformly arranged. The distance between the vent pipe and the bottom of the pool is 20-50cm, the vent pipe vertically extends upwards to 5-30cm from the surface of the wetland filler, and the top of the vent pipe is provided with a vent cap. The horizontal subsurface flow is internally provided with the vent pipe, so that the oxygen content in the wetland is improved, and the wetland can be rapidly reoxygenated during intermittent operation.
In a specific embodiment, the ecological purification device at least comprises two levels of embedded ecological purification units, wherein each level of ecological purification unit comprises a vertical subsurface flow wetland 1 and a horizontal subsurface flow wetland 2 which are annularly arranged; the water outlet pipe of the horizontal subsurface flow wetland 2 of the first-stage ecological purification unit is connected with the central water inlet pipe 14 of the vertical subsurface flow wetland 1 of the second-stage ecological purification unit. It should be noted that the number of stages of the specific ecological purification unit is set according to the actual site area and the sewage treatment requirement; through with multistage ecological purification unit nested setting, can further promote sewage purification's degree, be applicable to in the higher scene of the quality of water pollution concentration of intaking or the higher requirement of the quality of water of going out.
In a specific embodiment, the ecological purification device at least comprises two stages of parallel ecological purification units, wherein each stage of ecological purification unit comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are arranged in an annular mode. It should be noted that the number of stages of the specific ecological purification unit is set according to the actual site area and the sewage treatment requirement; the vertical subsurface flow wetland and the horizontal subsurface flow wetland are arranged in multiple stages, so that the water passing area is larger, the adaptability to the change of water quality and water quantity is strong, and the application range is wide; the method is suitable for scenes with large sewage quantity. It should be noted that when the constructed wetland system adopts two groups of ecological purification units or more than two groups of ecological purification units are arranged in parallel, in order to reduce the clogging of the constructed wetland and prolong the service life of the constructed wetland system, a plurality of ecological purification units are operated intermittently by tidal flow; the aerobic and anaerobic conditions in the wetland are alternately realized, so that the nitrification and denitrification reactions are enhanced, and the technical effect of improving the denitrification rate is achieved.
In the specific implementation process, the sewage filtered by the artificial wetland is discharged into the stabilization pond through the water outlet of the subsurface flow wetland of the last stage of artificial wetland, the sewage filtered by the artificial wetland system is further purified in the stabilization pond, and the sewage purified by the stabilization pond is discharged into a downstream river channel through the water collecting well.
According to the method, the vertical subsurface flow wetland is arranged in the horizontal subsurface flow wetland, and the horizontal subsurface flow wetland is arranged on the outer ring of the vertical subsurface flow wetland; the vertical subsurface flow wetland adopts a central water inlet pipe to feed water, sewage enters from the central water inlet pipe, and reaches the horizontal flow wetland annular water channel after being distributed by water distribution pipes which are symmetrically and crossly arranged and catched by the vertical flow wetland annular water channel; compared with the traditional rectangular wetland, the utilization rate of the ground is higher; the water distribution is more uniform, the wetland system is more stable in operation, and the sewage treatment efficiency is higher; the vertical subsurface flow wetland and the horizontal subsurface flow wetland are arranged in a multi-stage manner, so that the water passing area is larger, the adaptability to the change of water quality and water quantity is strong, and the application range is wide; if the pollution concentration of the water quality of the inlet water is higher or the water quality requirement of the outlet water is improved, the stage number of ecological purification can be increased.
The high efficiency constructed wetland system according to the present invention has been described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the above-described high-efficiency constructed wetland system without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (10)
1. A high-efficiency artificial wetland system comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are annularly arranged; the device is characterized in that the vertical subsurface flow wetland is arranged at the center of a circle, and the horizontal subsurface flow wetland is arranged at the outer ring of the vertical subsurface flow wetland;
the vertical subsurface flow wetland comprises a central water inlet pipe, a vertical flow wetland annular water channel and a water distribution pipe arranged between the central water inlet pipe and the vertical flow wetland annular water channel;
the horizontal subsurface flow wetland comprises a horizontal flow wetland annular water channel; and sewage enters from the central water inlet pipe and reaches the horizontal flow wetland annular water channel through the water distribution pipe and the vertical flow wetland annular water channel.
2. The high efficiency constructed wetland system of claim 1,
the ecological purification device at least comprises two levels of embedded ecological purification units, wherein each level of ecological purification unit comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are annularly arranged; wherein,
the water outlet pipe of the horizontal subsurface flow wetland of the first-stage ecological purification unit is connected with the central water inlet pipe of the vertical subsurface flow wetland of the second-stage ecological purification unit.
3. The high efficiency constructed wetland system of claim 1,
the ecological purification device at least comprises two levels of ecological purification units connected in parallel, wherein each level of ecological purification unit comprises a vertical subsurface flow wetland and a horizontal subsurface flow wetland which are arranged in an annular mode.
4. The high efficiency constructed wetland system of claim 1,
and ventilation pipelines for intermittent ventilation are arranged in the vertical subsurface flow wetland and the horizontal subsurface flow wetland.
5. The high efficiency constructed wetland system of claim 1,
the vertical subsurface flow wetland and the horizontal subsurface flow wetland respectively comprise a substrate layer, a covering layer and a plant layer which are sequentially arranged from bottom to top;
the matrix layer is one of limestone, volcanic rock, zeolite, shale, ceramsite and slag;
the covering layer is planting soil or sandy soil.
6. The high efficiency constructed wetland system of claim 5,
the plant layer is one or more of reed, cattail, calamus, canna, thalictrum ramosissimum, allium mongolicum regel, cress, rush, cane shoots and ryegrass.
7. The high efficiency constructed wetland system of claim 1,
the water distribution pipes are arranged in the vertical subsurface flow wetland in a display way.
8. The high efficiency constructed wetland system of claim 1,
a partition board for separating a water inlet channel and a water outlet channel is arranged in the horizontal subsurface flow wetland; the partition plate is annularly arranged.
9. The high efficiency constructed wetland system of claim 8,
the distance between the bottom end of the partition board and the pool bottom is 20-50 cm; the partition plate is built by steel slag bricks.
10. The high-efficiency artificial wetland system of claim 1, wherein a double-sided triangular overflow weir is arranged at the annular water channel of the vertical flow wetland, and the height difference between a water inlet weir and a water outlet weir of the double-sided triangular overflow weir is 10-50 cm; the width of the weir groove is 20-80 cm; the water depth in the weir groove is 5-20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384494.0U CN218539430U (en) | 2022-09-08 | 2022-09-08 | High-efficiency artificial wetland system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384494.0U CN218539430U (en) | 2022-09-08 | 2022-09-08 | High-efficiency artificial wetland system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218539430U true CN218539430U (en) | 2023-02-28 |
Family
ID=85271999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222384494.0U Active CN218539430U (en) | 2022-09-08 | 2022-09-08 | High-efficiency artificial wetland system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218539430U (en) |
-
2022
- 2022-09-08 CN CN202222384494.0U patent/CN218539430U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100371269C (en) | A method and device for treating domestic sewage using constructed wetlands | |
| CN104773929B (en) | Zero-valent iron/microorganism composite filtration wall purification system for domestic sewage in irrigation areas | |
| CN100572299C (en) | 3 D multi-directional stream wetland is handled the method that enters rivers pollution of area source and purifying river water | |
| CN105502841B (en) | A kind of folded spring layer scape formula sewage disposal device | |
| CN112358053A (en) | Composite ecological treatment method for intercepting farmland drainage pollutants | |
| CN104787963B (en) | A kind of for waste water control from oxygenation bacteria bed | |
| CN201372233Y (en) | Unpowered Integrated Constructed Wetland Sewage Treatment System | |
| CN106277338A (en) | Ecological purification system for river regulation | |
| CN106830545A (en) | A kind of combination type wetland drop water aeration sewage disposal system and method | |
| CN105645589B (en) | Deep-bed constructed wetland reactor capable of converting operation modes | |
| CN104556378B (en) | The integrated processing system of a kind of domestic sewage in rural areas and technique thereof | |
| CN101671096A (en) | Method for treating sewage by using multistage vertical flow composite artificial wetland and treatment system thereof | |
| CN104986917A (en) | Landscape type integrated sewage treatment system | |
| CN204529593U (en) | A kind of integrated reacting device of domestic sewage in rural areas | |
| CN206692417U (en) | A kind of three-dimensional composite constructed wetland system | |
| CN105236687B (en) | The micro- vertical baffling wetland sewage-treatment plant of aeration of self-cleaning type and method | |
| CN201501819U (en) | A sewage treatment system using drainage ditches | |
| CN207468300U (en) | A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system | |
| CN207525045U (en) | A kind of riverbank formula percolating device with water remediation | |
| CN210313706U (en) | A constructed wetland sewage treatment system with high filler utilization rate | |
| CN201240947Y (en) | Multilevel artificial geology fast seepage processing system of livestock and poultry sewage water terminal | |
| CN218539430U (en) | High-efficiency artificial wetland system | |
| CN215712088U (en) | Step stacked pond constructed wetland sewage treatment system | |
| CN213141557U (en) | Ditch type multi-stage surface flow artificial wetland | |
| CN212403874U (en) | Ecological rural domestic sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |