CN116835754A - Multi-terrain-adaptive water level-adjustable modularized vertical subsurface flow wetland device - Google Patents
Multi-terrain-adaptive water level-adjustable modularized vertical subsurface flow wetland device Download PDFInfo
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- CN116835754A CN116835754A CN202310797980.1A CN202310797980A CN116835754A CN 116835754 A CN116835754 A CN 116835754A CN 202310797980 A CN202310797980 A CN 202310797980A CN 116835754 A CN116835754 A CN 116835754A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 242
- 239000000945 filler Substances 0.000 claims abstract description 29
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000012876 topography Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 27
- 239000002689 soil Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims 2
- 239000012767 functional filler Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 69
- 241000196324 Embryophyta Species 0.000 description 10
- 239000004746 geotextile Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 235000005273 Canna coccinea Nutrition 0.000 description 1
- 240000008555 Canna flaccida Species 0.000 description 1
- 241001632080 Haloxylon Species 0.000 description 1
- 241000519406 Paphiopedilum Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
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- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000002195 synergetic effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention provides a modularized vertical subsurface flow wetland device with adjustable water level, which is suitable for various terrains, and comprises a modularized device main body, a water inlet pipeline system and a water outlet pipeline system. The modularized device main body comprises a modularized device frame, a covering layer, a water distribution system, a filler layer and a water receiving system, can be quickly assembled on site after factory standardized production, shortens the construction period and also ensures the product quality. The device is applicable to various terrains, and a single group of modules are used as units to level objects during construction, so that the field leveling workload is greatly reduced, and the construction period is shortened. When the wetland is locally blocked, the functional filler in the upper layer box of the blocked module unit is put forward for turning over, washing or replacing, the operation of other modularized devices is not influenced, the operation and maintenance difficulty and the cost are effectively reduced, and the service life of the wetland is prolonged. When the current site topography difference is large, the blocking leveling can be fully utilized, and a two-stage or multi-stage wetland series operation mode is adopted, so that anaerobic and aerobic cross operation is realized, and the wetland treatment effect is improved.
Description
Technical Field
The invention relates to a modularized vertical subsurface flow wetland device with adjustable water level and suitable for multiple terrains.
Background
The artificial wetland as an ecological treatment technology of a polluted water body is widely applied to the fields of rural domestic sewage treatment, sewage treatment plant tail water advanced treatment and the like. The artificial wetland takes natural wetland as a prototype, is formed by artificially filling a matrix and planting corresponding aquatic plants, and can purify polluted water body through physical, chemical and biological synergistic effects among the filler, the aquatic plants and microorganisms. The constructed wetland can be divided into surface-flow wetland and subsurface-flow wetland according to different water outlet and water distribution modes. The subsurface flow wetland is guided by the water distribution and water collection pipelines, so that the runoff space is expanded, water is fully contacted with matrixes, plants and microorganisms, the purifying capacity is obviously higher than that of the surface flow wetland, the occupied area is smaller, and the subsurface flow wetland has higher popularization and application values.
The constructed wetland, in particular the subsurface flow constructed wetland, has certain defects in the aspect of purifying polluted water bodies: (1) The constructed wetland has higher requirements on the land topography evenness, is difficult to arrange when the height fluctuation of the land is large, has large work load of the land leveling and high investment, and is required to find places for digestion when the excavated waste soil. (2) The wetland filler is easy to be blocked, and the filler is difficult to replace and renew and has high cost.
Disclosure of Invention
The invention aims to provide a modularized vertical subsurface flow wetland device with adjustable water level, which is suitable for multiple terrains, and solves the problems that the subsurface flow wetland has higher requirements on site topography flatness, has large engineering quantity, is difficult to replace, wash and renew after being blocked, and the like. The technical scheme adopted by the invention is as follows:
the utility model provides a water level adjustable modularization vertical subsurface flow wetland device of adaptation many topography which characterized in that: comprises a modularized device main body, a water inlet pipeline system and a water outlet pipeline system;
the field of the modularized vertical subsurface flow wetland device is leveled according to the position and the area of the main body of the modularized vertical subsurface flow wetland device as units, and is leveled into a block-shaped compacted soil layer;
the modularized device main body comprises a modularized device frame, a covering layer, a water distribution system, a filler layer and a water receiving system; the device can be quickly assembled on site after factory standardized production;
the covering layer is positioned on the uppermost layer of the modularized device main body and can be composed of gravel with the particle size of phi 8-15 and used as an aquatic plant planting matrix.
The water distribution pipeline of the water distribution system is positioned in the covering layer;
the water receiving system comprises a water receiving layer and a water receiving pipeline, the water receiving layer is positioned at the bottom of the modularized device frame, the packing layer is positioned on the water receiving layer, the covering layer is positioned on the packing layer, and the water receiving pipeline is arranged in the packing layer; the water collecting pipeline adopts a telescopic water collecting vertical pipe, a water collecting vertical pipe sleeve is sleeved outside the telescopic water collecting vertical pipe, water flows through the filler layer for purification treatment and then is collected to a water collecting layer, the water collecting vertical pipe sleeve is internally turned up to a water inlet at the upper end of the telescopic water collecting vertical pipe, and water discharged after the filler purification treatment is collected in a concentrated manner;
the water receiving system is connected with a water outlet pipeline system positioned below the bottom of the modularized device main body through a connecting pipeline penetrating through the modularized device frame.
On the basis of adopting the technical scheme, the invention can also adopt the following further technical schemes or use the further technical schemes in combination:
the modularized device frame is made of HDPE, PP, PVC and the like, has the dimensions of 1-2 m in length, 1-2 m in width and 0.8-1.5m in height, and can be produced in a factory standardized mode according to actual needs.
The water distribution pipeline comprises a water distribution pipe and a three-way water distributor, the water distribution pipe and the three-way water distributor are arranged on the covering layer, uniform water distribution in the device is realized, the water distribution pipeline of each modularized device main body is connected with an electric control valve, and each modularized device unit is controlled to be opened and closed independently through the electric control valve.
The filler in the filler layer adopts grading, the grain diameter is increased downwards layer by layer, and when the filler is blocked, the filler on the upper layer is replaced or washed. The filler layer is preferably a high-efficiency denitrification and dephosphorization filler system, and is formed by stacking a plurality of groups of boxed functional fillers in a modularized device frame, wherein the fillers are graded filter materials with large specific surface area and high porosity, such as zeolite, volcanic rock, ceramsite and the like, and good denitrification and dephosphorization effects. The upper layer adopts small-grain-size graded filter materials, and the lower layer adopts larger-grain-size graded filter materials. When the functional filler is replaced, the functional filler is only required to be taken out of the box and replaced by the blocking layer.
The water inlet pipeline system is made of PE materials, is arranged above the modularized device main body, and is connected with water distribution pipes of the modularized device main bodies in groups through tee joints to convey sewage to be treated to the modularized device main bodies.
An openable cover is arranged at the top of the water receiving vertical pipe sleeve, and the water receiving vertical pipe sleeve extends to the bottom of the packing layer all the way; the telescopic water receiving vertical pipe is connected with the connecting pipeline; the water-receiving layer may be composed of mainly large particle size gravel. The telescopic water receiving vertical pipe is arranged in the middle of the modularized device and above the water receiving layer, and the water receiving vertical pipe is arranged in the telescopic water receiving vertical pipe, so that water is received as uniformly as possible.
The telescopic water receiving vertical pipe is only provided with an upper water inlet, the upper water inlet can be arranged on the front surface of the top of the telescopic water receiving vertical pipe, or/and the upper water inlet is a water inlet arranged on the pipe wall of a certain elevation range close to the top, and the elevation of the upper water inlet is positioned in the elevation range of the packing layer. The telescopic water receiving vertical pipe can adopt two or more sections of pipes matched with each other in a sliding sealing way.
The water outlet pipeline system is arranged below the bottom of the modularized device main body, is positioned between the flattened rammed soil layer after being flattened by blocking and the bottom of the modularized device main body, and is filled with sand gravel matrixes between the flattened rammed soil layer after being flattened by blocking and the bottom of the modularized device main body, so that pipeline damage is prevented.
The water outlet pipeline system can be connected with the water collecting pipes of each group of modular devices through a tee joint, and tail water after purification treatment is collected in a concentrated mode and discharged to the surrounding water body or comprehensively utilized. The sand gravel matrix is filled between the water outlet pipeline system and the modularized device main body.
When the current site topography difference in height is large, the block leveling can be fully utilized, the leveling rammed soil layers in different elevation areas are basically maintained to be close to the original elevation, in the modularized device main body with large elevation difference, the water outlet pipeline system of the modularized device main body positioned at high position is connected to the water inlet pipeline system of the modularized device main body positioned at low position, a two-stage or multi-stage wetland serial operation mode is adopted, and the height adjustment of the telescopic water collecting vertical pipe is realized, so that the anaerobic and aerobic cross operation is realized, and the wetland treatment effect is improved.
The beneficial effects of the invention are as follows: the modularized device can be used for factory finished product production, is flexibly assembled on site, and effectively controls the mass production quality of products. The modularization with adjustable water level greatly reduces the requirements of the wetland on the shape of the land, the lower parts of the module units are kept flat, the soil layer is compact, and the whole wetland area is not required to be subjected to site leveling. The water inlet pipeline system and the water outlet pipeline system are made of PE, have good flexibility and can not be influenced by the current terrain. The site only needs to be leveled in a small range, a water outlet pipeline system is paved, a modularized device is assembled, a water inlet pipeline system is paved, the site is not leveled in a large range, hardening and seepage prevention are not needed, and the construction period of the wetland is greatly shortened.
The high-efficiency denitrification and dephosphorization filler system mainly concentrates the wetland blockage in the upper matrix filler. When the serious blocking condition occurs to the wetland partial modular device, the functional filler in the upper layer box of the blocked module unit is put forward to be turned over, washed and replaced, the operation of other block modular devices is not influenced, the operation and maintenance difficulty and the operation and maintenance cost are greatly reduced, and the service life of the wetland is prolonged.
The invention can flexibly adjust the operation mode of the modularized wetland by controlling the electric control valve, is beneficial to preventing blockage by properly venting in stages, and can also set intermittent operation to improve the ammonia nitrogen treatment effect.
When the current site terrain height difference is large, the invention can fully utilize the terrain to adopt a two-stage or multi-stage wetland series operation mode, and realize the anaerobic and aerobic cross operation through the height adjustment of the water receiving vertical pipe, thereby improving the wetland treatment effect.
Drawings
FIG. 1 is an assembled plan view of a modular device according to embodiment 1 of the present invention;
FIG. 2 is an assembled plan view of a packing box of a modular unit according to embodiment 1 of the present invention
FIG. 3 is a plan view of a modular device water distribution system in accordance with embodiment 1 of the present invention;
FIG. 4 is a front elevational view of the body of the modular device of embodiment 1 of the present invention;
FIG. 5 is an elevation view of the modular device outlet manifold system of embodiment 1 of the present invention;
fig. 6 is a series elevation of the modular device of embodiment 2 of the present invention.
1. A modular device body; 11. a modular device frame; 12. phi 20-30 high-efficiency denitrification and dephosphorization box filler; 13. phi 12-20 high-efficiency denitrification and dephosphorization box filler; 14. phi 8-15 gravel; 15. aquatic plants; 16. a three-way water distributor; 17. a water distribution pipe; 18. a water receiving vertical pipe; 181. an upper adjusting tube; 182. a lower fixing tube; 19. a water receiving vertical pipe sleeve; 120. a sleeve cover; 121. phi 30-40 gravel; 122. an electric control valve; 123. a stuffing box; 124. geotextile; 125. upturning geotextile; 2. a water inlet pipe system; 3. a water outlet pipeline system; 4. a water outlet main pipe protective layer; 5. leveling the compacted soil layer.
Description of the embodiments
The present invention will now be described more fully hereinafter with reference to the accompanying drawings and examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1, refer to fig. 1-5. The embodiment is a water level adjustable modularized vertical subsurface flow wetland device adapting to multiple terrains, which comprises a modularized device main body 1, a water inlet pipeline system 2 and a water outlet pipeline system 3.
As shown in fig. 5, the site of the modularized vertical subsurface flow wetland device is leveled according to the position and the area of the modularized device main body 1, and is leveled into a blocky rammed soil layer 5, the lower part of the block unit is leveled only by considering the position of each block unit, the soil layer is compacted, different blocks fall on different heights in a staggered manner, and the site of the whole wetland area is not required to be leveled uniformly. Specifically, the local micro-leveling compaction is performed after sundry weeds are removed from the field, hardening and seepage prevention are not needed, the water outlet pipeline system 3 is paved on the local micro-leveling compaction, the water inlet pipeline system and the water outlet pipeline system are made of PE materials, and the local micro-leveling compaction tamping is good in flexibility and can not be influenced by the current terrain.
The modular device body 1 comprises a modular device frame 11, a covering layer 14, a water distribution system, a filler layer and a water receiving system, and is quickly assembled on site after factory production.
The cover layer 14 is positioned at the uppermost layer of the modularized device main body 1 and also serves as a planting substrate layer of the aquatic plants 15; the water distribution line of the water distribution system is located in the cover layer 14.
The water receiving system comprises a water receiving layer 121 and a water receiving pipeline, wherein the water receiving layer 121 is positioned at the bottommost layer of the modularized device frame, phi 30-40 gravel can be adopted, and the thickness is about 200 mm. The packing layer is positioned above the water collecting layer 121, the covering layer 14 is positioned above the packing layer, and a water collecting pipeline is arranged in the packing layer; the water collecting pipeline adopts a telescopic water collecting vertical pipe 18, a water collecting vertical pipe sleeve 19 is sleeved outside the telescopic water collecting vertical pipe, water flows through a packing layer for purification treatment and then is collected to a water collecting layer 121, the water collecting vertical pipe sleeve 19 is turned up to an upper water inlet of the telescopic water collecting vertical pipe 18, and water discharged after the packing purification treatment is collected in a concentrated manner;
the water receiving system is connected with the water outlet pipeline system 3 positioned below the bottom of the modularized device main body through a tee joint by a connecting pipeline 6 penetrating through the modularized device frame.
The dimension of the molding device frame 11 in this embodiment is 2m×2m×1.1m, and is made of PVC and has no top surface. The modular device frame should remain completely sealed from water. The lower fixed pipe 182 in the telescoping water receiving riser 18 has a diameter DN50, i.e. a nominal diameter of 50mm. A preformed hole with the diameter of 60mm is formed in the middle of the bottom of the modularized device frame 11 and is used as a penetrating hole of the connecting pipeline 6, and a rubber gasket is used for sealing between the connecting pipeline 6 and the preformed hole of the bottom plate of the modularized device frame. Further, 2 telescopic water receiving risers 18 can be added in the same modularized device main body 1 through components such as a tee joint, an elbow and the like, so that water receiving uniformity is improved. The height of the water inlet at the upper part of the water collecting vertical pipe 18 can be adjusted by extending and contracting the length of the water collecting vertical pipe, and the water level in the modularized device main body 1 can be freely adjusted, so that a high water level anaerobic environment and a low water level aerobic environment can be formed. When water accumulation is shown above a certain block module unit of the wetland, the phenomenon of the blockage of the wetland can be relieved by reducing the height of the water receiving vertical pipe and running at a low water level.
The telescopic water receiving vertical pipe 18 can adopt a lower fixed pipe 182 and an upper adjusting pipe 181, the upper adjusting pipe 181 and the lower fixed pipe are in sliding sealing connection, the telescopic water receiving vertical pipe is only provided with an upper water inlet, the upper water inlet is arranged on the upper adjusting pipe 181 and can be arranged on the front surface of the top of the upper adjusting pipe or/and the front surface of the top of the upper adjusting pipe, the water inlet is a water inlet hole arranged on the pipe wall of a certain elevation range close to the top, and the elevation of the upper water inlet is positioned in the elevation range of the packing layer.
The water collecting vertical pipe sleeve extends to the bottom of the packing layer all the time, and the telescopic water collecting vertical pipe is connected with the connecting pipeline. The diameter of the riser sleeve 19 is DN100, i.e. the nominal diameter is 100mm. The sleeve cover 120 is arranged at the top of the water receiving vertical pipe sleeve 19, and when the water level needs to be adjusted, the length of the telescopic water receiving vertical pipe 18 can be manually adjusted by opening the sleeve cover 120 so as to adjust the water level.
The operation water level of the wetland is controlled by adjusting the height of the water receiving vertical pipe, and the water is periodically dropped. The low water level operation can promote the matrix to automatically reoxygenate, thereby recovering the aerobic environment and accelerating the mineralization of the blocking substances. Reoxygenation can be carried out in the system during low water level operation, so that the decomposition and utilization of organic matters by microorganisms are promoted, and the intermittent low water level operation is beneficial to reversing the biological blockage of the vertical subsurface flow constructed wetland. The recovery rate of the porosity of the wetland in the water-level-reduced operation mode is far higher than that in the constant-level operation mode. The shear rate is smaller at slower water intake rates, while microorganisms secrete smaller amounts of extracellular polymer, while water intake rates are faster, microorganisms tend to secrete more extracellular polymer to protect themselves from the external environment based on self-protection awareness. The slow water inlet rate can reduce the secretion of extracellular polymer and slow down the biological blockage of the wetland.
The water distribution pipeline comprises a water distribution pipe 17 and a three-way water distributor 16, is arranged on the covering layer 14, realizes uniform water distribution in the device, is connected with an electric control valve 122, flexibly controls the modularized device units to be independently opened and closed through the electric control valve 122, is appropriately emptied in stages, is beneficial to preventing blockage, and can also be provided with wheel intermittent operation to improve ammonia nitrogen treatment effect.
In this embodiment, the packing layer adopts a high-efficiency denitrification and dephosphorization packing system, and is formed by stacking a plurality of groups of functional packing in a modularized device frame, and the packing selects graded filter materials with high denitrification and dephosphorization effects, such as zeolite, volcanic rock, ceramsite and the like, which have large specific surface area and high porosity. The upper layer adopts small-grain-size graded filter materials, and the lower layer adopts larger-grain-size graded filter materials. When the functional filler is replaced, the functional filler is only required to be taken out of the box and replaced by the blocking layer. Wherein, the lower layer is phi 20-30 high-efficiency nitrogen and phosphorus removal box filler 12, and the upper layer is phi 12-20 high-efficiency nitrogen and phosphorus removal box filler 13. The boxed functional filler comprises a filler box 123, a single box size 500 x 400mm, and a single group of modular units containing 32 boxes of filler. The box 123 can be formed by adopting a steel wire net frame or a plastic net box with water permeable holes filled on each surface, geotextile 124 is paved in the box, and the filler in the box is wrapped by the geotextile to prevent the filler from leaking. The net cage arranged on the vertical pipe passing path can be provided with holes on the bottom surface and the top surface for the sleeve 19 of the water collecting vertical pipe to pass through, and the circular holes are sleeved into the water collecting vertical pipe to be stuck with another geotextile, the geotextile is turned up along the pipeline, and the geotextile 125 is compacted by the filter material to prevent the filter material from falling from the gap. By adopting the technical scheme of the invention, in the general case, the blocking phenomenon always only occurs in local individual modules at the beginning in the running process, and at the moment, only the running valves of the modules are closed for individual maintenance, so that the integral normal running of the subsurface wetland is not influenced, and the efficient running of the subsurface wetland can be always kept. In addition, as for the module, the blockage is mainly concentrated on the upper packing layer with smaller particle size, and when the blockage occurs, the upper packing layer is replaced or washed, and more conveniently, the upper packing box is directly moved out. The upper water distribution pipe network is made of PE flexible materials, so that the assembly and the disassembly are convenient, and when the filler is required to be replaced or washed, the joints of related components are disassembled. When carrying the box body with the water receiving vertical pipe, the sleeve pipe of the water receiving vertical pipe is pressed, and the upper box body is slightly carried.
The water outlet pipeline system 3 is arranged below the bottom of the modularized device main body 1, is positioned between the flattened rammed soil layer 5 flattened by blocking and the bottom of the modularized device main body 1, and is filled with sand gravel matrix between the flattened rammed soil layer flattened by blocking and the bottom of the modularized device main body to serve as a water outlet main pipe protection layer 4. In the implementation, a sand gravel matrix with the length of about 200cm is paved above the water outlet pipeline system 3 to serve as a water outlet main pipe protective layer 4.
The uppermost layer of the modular device in the embodiment is a covering layer, and is composed of gravel 14 with the particle size phi of 8-15, and the gravel is used as a planting matrix for the aquatic plants 15. The aquatic plants mainly select emergent aquatic plants with good water quality purifying effect and strong adaptability, such as iris, haloxylon, canna, paphiopedilum and the like.
In this embodiment, after the installation of the multiple groups of modularized devices is completed, a water inlet pipeline system 2 is paved, and the water inlet pipeline system is made of PE materials. The water inlet pipeline system 2 is arranged above the modularized device main body 1, and is connected with each group of modularized device main body water distribution pipes through a tee joint to convey sewage to each modularized device.
Example 2: by adopting the technical scheme of the invention, when the current site topography height difference is large, the block leveling scheme can be fully utilized, the leveling rammed soil layers in different elevation areas basically maintain to be close to the original elevation, the whole site is not required to be leveled at the same elevation or close to the elevation, when the site is leveled and rammed, only the micro-leveling site is needed, the elevation change between the blocks can be directly staggered according to the topography height, the site topography leveling engineering quantity can be greatly reduced, the elevation difference is large in the modularized device main body 1, the water outlet pipeline system of the modularized device main body positioned at the high position is connected to the water inlet pipeline system of the modularized device main body 1 positioned at the low position, the two-stage or multi-stage wetland serial operation mode is adopted, the anaerobic and aerobic serial operation is realized by adjusting the height of the telescopic water collecting vertical pipes 18, the operation mode is flexibly adjusted according to the water quality characteristics of incoming water, and the water quality purifying effect is maximized. The schematic structure of this embodiment can be seen in fig. 6, and refer to fig. 1-4. In this embodiment, the structure of the modularized device main body 1 is the same as that of embodiment 1, and the difference is that the two-stage modularized device is implemented in series operation, and the first-stage modularized device implements low water level operation by adjusting the height of the water receiving vertical pipe, similar to an "aerobic environment"; the second-stage modularized device is used for adjusting the height of the water receiving vertical pipe to be similar to an anaerobic environment. The anaerobic-aerobic cross operation mode can be realized for the same module by adjusting the height of the water receiving vertical pipe by combining the water quality characteristics.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a water level adjustable modularization vertical subsurface flow wetland device of adaptation many topography which characterized in that: comprises a modularized device main body, a water inlet pipeline system and a water outlet pipeline system;
the field of the modularized vertical subsurface flow wetland device is leveled according to the position and the area of the main body of the modularized vertical subsurface flow wetland device as units, and is leveled into a block-shaped compacted soil layer;
the modularized device main body comprises a modularized device frame, a covering layer, a water distribution system, a filler layer and a water receiving system;
the covering layer is positioned on the uppermost layer of the modularized device main body and is also used as an aquatic plant planting matrix layer;
the water distribution pipeline of the water distribution system is positioned in the covering layer;
the water receiving system comprises a water receiving layer and a water receiving pipeline, the water receiving layer is positioned at the bottom of the modularized device frame, the packing layer is positioned on the water receiving layer, the covering layer is positioned on the packing layer, and the water receiving pipeline is arranged in the packing layer; the water collecting pipeline adopts a telescopic water collecting vertical pipe, a water collecting vertical pipe sleeve is sleeved outside the telescopic water collecting vertical pipe, water flows through the filler layer for purification treatment and then is collected to a water collecting layer, the water collecting vertical pipe sleeve is internally turned up to a water inlet at the upper end of the telescopic water collecting vertical pipe, and water discharged after the filler purification treatment is collected in a concentrated manner;
the water receiving system is connected with a water outlet pipeline system positioned below the bottom of the modularized device main body through a connecting pipeline penetrating through the modularized device frame.
2. A multi-terrain compliant, water level adjustable modular vertical subsurface flow wetland device as defined in claim 1 wherein: the modular device frame is 1-2 m in size and length, 1-2 m in width and 0.8-1.5m in height.
3. A multi-terrain compliant, water level adjustable modular vertical subsurface flow wetland device as defined in claim 1 wherein: the water distribution pipeline comprises a water distribution pipe and a three-way water distributor, the water distribution pipe and the three-way water distributor are arranged on the covering layer, uniform water distribution in the device is realized, the water distribution pipeline of each modularized device main body is connected with an electric control valve, and each modularized device unit is controlled to be opened and closed independently through the electric control valve.
4. A multi-terrain compliant, water level adjustable modular vertical subsurface flow wetland device as defined in claim 1 wherein: the packing layer adopts a high-efficiency denitrification and dephosphorization packing system and is formed by stacking a plurality of groups of boxed functional packing materials in a modularized device frame, wherein the upper layer adopts small-particle-size graded filter materials, and the lower layer adopts larger-particle-size graded filter materials.
5. The multi-terrain water level adjustable modularized vertical subsurface flow wetland device according to claim 1, wherein the water inlet pipeline system is arranged above the modularized device main body, and is connected with water distribution pipes of the modularized device main bodies through tee joints to convey sewage to be treated to the modularized device main bodies.
6. The multi-terrain water level adjustable modularized vertical subsurface flow wetland device according to claim 1, wherein an openable cover is arranged at the top of a water receiving vertical pipe sleeve, the water receiving vertical pipe sleeve extends to the bottom of a packing layer, and the telescopic water receiving vertical pipe is connected with the connecting pipeline.
7. The multi-terrain adaptive modular vertical subsurface flow wetland device according to claim 1, wherein said water outlet pipeline system is disposed below the bottom of the modular device body, between the tiled flattened compacted soil layer and the bottom of the modular device body, and between the tiled flattened compacted soil layer and the bottom of the modular device body, a sand gravel matrix is filled.
8. The multi-terrain adaptive water level adjustable modularized vertical subsurface flow wetland device according to claim 1, wherein said water receiving pipeline adopts a telescopic water receiving vertical pipe; the water receiving vertical pipe can freely stretch and retract, so that the water level in the device can be freely adjusted; the high-water-level anaerobic environment and the low-water-level aerobic environment can be formed according to the requirements so as to adapt to different water inflow quality, when water accumulation signs appear above a main body of a modularized device in a certain block of the wetland, the phenomenon of blocking of the wetland can be relieved by reducing the high-end low-water-level operation of the water collecting vertical pipe, and the operation of the main body of the modularized device is not influenced.
9. The modularized vertical subsurface flow wetland device with adjustable water level, which is suitable for multiple terrains, is characterized in that when the current terrains of the site are large in height difference, blocking leveling can be fully utilized, leveling rammed soil layers in different elevation areas are basically maintained to be close to the original elevation, in a modularized device main body with large elevation difference, a water outlet pipeline system of the modularized device main body positioned at high position is connected to a water inlet pipeline system of the modularized device main body positioned at low position, a two-stage or multi-stage wetland serial operation mode is adopted, and through height adjustment of a water collecting vertical pipe, anaerobic and aerobic cross operation is realized, and the wetland treatment effect is improved.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117534205A (en) * | 2023-12-27 | 2024-02-09 | 上海勘测设计研究院有限公司 | Organic wastewater treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117534205A (en) * | 2023-12-27 | 2024-02-09 | 上海勘测设计研究院有限公司 | Organic wastewater treatment device |
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