CN112850909A - Constructed wetland filler construction method - Google Patents
Constructed wetland filler construction method Download PDFInfo
- Publication number
- CN112850909A CN112850909A CN202110224605.9A CN202110224605A CN112850909A CN 112850909 A CN112850909 A CN 112850909A CN 202110224605 A CN202110224605 A CN 202110224605A CN 112850909 A CN112850909 A CN 112850909A
- Authority
- CN
- China
- Prior art keywords
- layer
- blocking layer
- biological filter
- water
- pipe
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- C02F2303/20—Prevention of biofouling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Revetment (AREA)
Abstract
The application relates to a constructed wetland filler construction method, which relates to the technical field of constructed wetlands and comprises the following steps: s1, laying retaining walls and composite impermeable layers on two sides of the foundation pit; s2, paving a first anti-blocking layer at the position of a retaining wall close to the water inlet pipeline; s3, digging a pipe groove on the anti-blocking layer, and placing the horizontal water distribution pipe in the pipe groove and communicating with a water inlet pipeline; s4, continuously laying a second anti-blocking layer; s5, laying a protection plate on the upper surface of the anti-blocking layer, laying a separation layer below the protection plate, backfilling a biological filter layer, and laying the protection plates in sequence along with the advance of equipment; s6, arranging a partition plate at the position of the biological filter layer close to the water outlet pipeline; s7, laying a first anti-blocking layer between the biological filter layer retaining walls, digging pipe grooves, and communicating the transverse water collecting pipe with a water outlet pipeline after penetrating through the retaining walls; s8, lay the second floor and prevent the blocking layer, get rid of guard plate and separate layer, this application has the effect to wetland filler, built-in pipeline and barrier protection effect when improving the construction.
Description
Technical Field
The application relates to the technical field of constructed wetlands, in particular to a constructed wetland filler construction method.
Background
The artificial wetland is an important ecological project, is constructed and operated artificially, is similar to a marshland ground, and can treat sewage and sludge through the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms.
In the related technology, the construction of the artificial wetland needs to perform anti-seepage treatment on the dug foundation pit, perform filling treatment on the foundation pit while laying a pipeline, and perform water introduction, microorganism filtration and plant throwing after the filling is completed, so as to complete the construction of the artificial wetland.
In view of the above-mentioned related technologies, the inventor believes that there is a defect that when the artificial wetland is subjected to mechanical filling, the composite impermeable layer and the laid pipeline are subjected to invisible damage, so that soil erosion is caused, and the purification effect of the artificial wetland is reduced.
Disclosure of Invention
In order to overcome the defect that when the artificial wetland is filled, the composite impermeable layer and the pipeline can be subjected to invisible damage, so that water and soil loss is caused, and the purification effect of the artificial wetland is reduced, the application provides the artificial wetland filling construction method.
The constructed wetland filler construction method provided by the application adopts the following technical scheme:
the constructed wetland filler construction method comprises the following steps:
s1, firstly, excavating and flattening a foundation pit of the construction site by using excavating equipment, paving retaining walls on two sides of the foundation pit, and paving a composite impermeable layer on the excavated foundation pit;
s2, paving a first anti-blocking layer consisting of large-particle broken stones at the position, close to the retaining wall of the water inlet pipeline;
s3, excavating a pipe groove on the first anti-blocking layer, placing the horizontal water distribution pipe in the pipe groove, and enabling the middle part of the horizontal water distribution pipe to extend towards the retaining wall and then to penetrate through the retaining wall to be communicated with a water inlet pipeline;
s4, continuously laying a second anti-blocking layer on the first anti-blocking layer close to the horizontal water distribution pipe in a manual mode, and filling and compacting the rest part of the first anti-blocking layer by using mechanical equipment;
s5, paving a partition plate on one side of the anti-blocking layer far away from the retaining wall, paving a plurality of protective plates for excavating equipment to advance on the upper surface of the paved anti-blocking layer, paving a separation layer below the protective plates, sequentially backfilling biological filter layers into the foundation pit through mechanical equipment, and sequentially paving the separation layer and the protective plates along with the advancing of the excavating equipment;
s6, after the protection plates are laid, backfilling biological filter layers at the positions on the two sides of the advancing direction of the excavating equipment through the excavating equipment, and advancing in sequence;
s7, after the biological filter layer is laid, arranging a partition plate at a position of the biological filter layer close to the water outlet pipeline, and enabling the partition plate to be abutted against the side wall of the biological filter layer close to the water outlet pipeline;
s8, paving a first anti-blocking layer between the biological filter layer and a retaining wall close to the water outlet pipeline through excavating equipment, excavating a pipe groove for installing a transverse water collecting pipe, and communicating the transverse water collecting pipe with the water outlet pipeline after the transverse water collecting pipe penetrates through the retaining wall, wherein the process which cannot be finished by the excavating equipment is finished manually;
s9, continuously laying a second anti-blocking layer above the first anti-blocking layer, compacting, returning excavating equipment, and sequentially removing the protective plate and the separating layer.
By adopting the technical scheme, the laid composite impermeable layer effectively reduces the probability of water permeating to the lower part of the bottom of the foundation pit, further reduces water and soil loss, improves the utilization rate of water resources, effectively reduces the probability of blocking holes on the circumferential side walls of the horizontal water distribution pipes and the horizontal water collection pipes by the filling materials by laying the anti-blocking layer, effectively reduces the damage to the pipelines by manually filling the parts of the second anti-blocking layer above the horizontal water distribution pipes and the horizontal water collection pipes, effectively protects the pipelines and the biological filter layers below the excavating equipment by laying the protective plates, facilitates the advancing of the excavating equipment, improves the construction efficiency of artificial humidity, backfills the biological filter layers on the two sides of the protective plates by the excavating equipment, effectively improves the volume of the biological protection filter layers in the construction process, and further improves the quality of the constructed artificial wetland, the damage to a biological filter layer, a built-in pipeline and a lower composite impermeable layer is effectively reduced when the constructed wetland construction is carried out, and the purification effect of the artificial humidity is improved.
Optionally, the composite impermeable layer sequentially comprises a lower fine soil particle layer, an impermeable membrane, an upper fine soil particle layer and a non-woven fabric layer from bottom to top.
By adopting the technical scheme, the lower fine soil particle layer and the upper fine soil particle layer effectively protect the anti-seepage film, the non-woven fabric layer effectively reduces the loss of the upper fine soil particle layer, the water and soil loss is reduced while the anti-seepage effect is ensured, and the protection effect on the anti-seepage film is improved.
Optionally, the thickness of the lower fine soil particle layer is 50mm-200mm, the upper surface of the lower fine soil particle layer is flattened, and the thickness of the upper fine soil particle layer is 200-500 mm.
Through adopting above-mentioned technical scheme, the effectual prevention of seepage membrane that makes level for of fine soil grain layer down has improved the roughness and the laminating degree that the prevention of seepage membrane was laid, and the thickness of going up fine soil grain layer sets up the effectual prevention of seepage membrane that provides protection, has improved the protective effect to the prevention of seepage membrane.
Optionally, the impermeable membrane is a geomembrane, and the thickness of the impermeable membrane is 0.5mm-2 mm.
By adopting the technical scheme, the impermeable membrane is made of the geomembrane, and the impermeable effect of the composite impermeable layer is improved together with the thickness of the geomembrane.
Optionally, the index of the non-woven fabric layer is 100 g/square meter to 300 g/square meter.
Through adopting above-mentioned technical scheme, the specification setting on non-woven fabrics layer has reduced the waste of non-woven fabrics when carrying out the interception to last fine soil grain layer, and non-woven fabrics layer has effectually improved the effect of laying of compound barrier layer simultaneously.
Optionally, the biological filter layer is sequentially composed of a volcanic rock layer, a biological ball layer and a gravel layer from the direction of the horizontal water distribution pipe to the direction close to the horizontal water collection pipe.
Through adopting above-mentioned technical scheme, the volcanic rock layer sets up effectual impurity to in the water through its self porous and intercepts, and the biological ball is effectual for microorganism and aquatic plant provide living environment, filters the water through microorganism and aquatic plant wherein, and the water after the filtration carries out further filtration through the rubble layer to the water, the effectual constructed wetland that has improved carries out filterable effect to the water.
Optionally, the size of volcanic rock particles in the volcanic rock layer is 5mm-20mm and accounts for 40% -60% of the biological filter layer.
Through adopting above-mentioned technical scheme, the particle size of volcanic rock layer sets up effectual improvement to the filterable effect of water, and the volume of laying of volcanic rock layer accounts for the effectual filtration pressure that reduces the bio-sphere layer simultaneously.
Optionally, the size of the bio-balls in the bio-ball layer is 5mm-20mm and accounts for 5% -15% of the bio-filter layer.
Through adopting above-mentioned technical scheme, the size of biological ball sets up effectually provides suitable living space for microorganism and aquatic plant, and the effectual water that makes simultaneously passes through biological ball layer, and it has together improved the filter effect to the water to set up rather than the volume percentage, and then has improved constructed wetland's filter effect.
Optionally, the size of the crushed stone in the crushed stone layer is 5mm-20mm and accounts for 40% -60% of the biological filter layer.
Through adopting above-mentioned technical scheme, the rubble size setting of rubble layer and its volume account for than setting up together effectual impurity to the water filter the interception, the effectual probability that impurity in the water violently managed the jam with the catchment that has reduced.
Optionally, a partition plate for separating two adjacent different layers is arranged between the layers of the biological filter layer, and a plurality of circulation holes for water to pass through are formed in the partition plate.
Through adopting above-mentioned technical scheme, the division board is effectively separated the interception with the packing layer that the level is different, makes the water normally circulate simultaneously, has improved the stability after the constructed wetland construction is accomplished.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the laying mode of the anti-blocking layer effectively improves the protection effect on the horizontal water distribution pipe and the horizontal water collection pipe, simultaneously effectively reduces the probability of blocking the horizontal water distribution pipe by the filler, effectively reduces the volume and the probability of damage to a biological filter layer when the excavating equipment is backfilled by the arrangement of the protection plates and the arrangement of the positions of the protection plates, simultaneously carries out avoidance protection on the built-in pipeline, improves the protection effect of constructed wetland construction on the composite anti-blocking layer, the built-in pipeline and the filler, and further improves the effect of the constructed wetland on water purification;
2. the upper fine soil particle layer and the lower fine soil particle layer effectively improve the protection effect on the impermeable membrane, the impermeable membrane effectively improves the water interception capability, and the non-woven fabric layer effectively reduces the loss degree of the upper fine soil particle layer, so that the integral impermeable effect and the anti-extrusion capability of the composite impermeable layer are improved;
3. volcanic rock stratum, biological ball layer, rubble layer set up and carry out abundant filtration from two directions of physics filtration and biological filtration to the water, the effectual constructed wetland that has improved filters the effect of purifying to the water, and the setting up of division board is simultaneously effectual to the different filler interception in the horizontal direction, makes the normal circulation of water simultaneously, the effectual loss that has reduced constructed wetland filler, has improved constructed wetland's overall stability.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;
FIG. 2 is a partial schematic view showing the laying of the horizontal water distribution pipes in example 1;
FIG. 3 is a partial schematic view showing the arrangement of the partition plates in example 1;
FIG. 4 is a partial schematic view showing the arrangement of the guard plates and the bio-filter packing in example 1;
FIG. 5 is a partial schematic view showing the laying of the horizontal collector pipes in example 1;
FIG. 6 is a partial schematic view showing the arrangement of the anti-clogging layer above the horizontal collector pipe in example 1;
FIG. 7 is a schematic structural diagram of embodiment 2 of the present application;
FIG. 8 is a partial schematic view showing the laying of the water distribution floral tubes in example 2;
FIG. 9 is a partial schematic view showing the laying of the biofiltration layer in example 2;
FIG. 10 is a partial schematic view showing the positions of the end portions of the water distribution pattern pipes in example 2;
FIG. 11 is a partial schematic view showing the laying of the horizontal collector pipes in example 2;
fig. 12 is a partial schematic view showing the laying of the anti-blocking layer above the transverse collector pipe in example 2.
In the figure, 1, a retaining wall; 2. a composite impermeable layer; 21. a lower fine soil particle layer; 22. an impermeable membrane; 23. coating a fine soil particle layer; 24. a non-woven fabric layer; 3. an anti-blocking layer; 31. a pipe groove; 32. a horizontal water distribution pipe; 321. a water distribution floral tube; 33. a transverse collector pipe; 4. a biological filtration layer; 41. a volcanic rock formation; 42. a bio-sphere layer; 43. a crushed stone layer; 5. a partition plate; 51. a flow-through hole; 6. a protection plate; 62. a separation layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-12.
Example 1
The application embodiment 1 discloses a constructed wetland filler construction method, which comprises the following steps of:
s1, referring to the figures 1 and 2, firstly, excavating and flattening a foundation pit of a construction ground by using excavating equipment, paving retaining walls 1 on two sides of the foundation pit, and paving a composite impermeable layer 2 on the excavated foundation pit;
the composite impermeable layer 2 sequentially comprises a lower fine soil particle layer 21, an impermeable membrane 22, an upper fine soil particle layer 23 and a non-woven fabric layer 24 from bottom to top, wherein the thickness range of the lower fine soil particle layer 21 is 50mm-200mm, the thickness of the embodiment 1 is 100mm, the impermeable membrane 22 is a composite geomembrane, the thickness range is 0.5mm-2mm, the thickness of the embodiment 1 is 1mm, the thickness range of the upper fine soil particle layer 23 is 200mm, the thickness of the embodiment 1 is 400mm, the specification range of the non-woven fabric layer 24 is 100 g/square meter-300 g/square meter, the specification of the embodiment 1 is 200 g/square meter, and the upper surface of the lower fine soil particle layer 21 is flatly pressed.
After excavation of the foundation pit is carried out, the bottom of the foundation pit is flattened, a lower fine soil particle layer 21, an anti-seepage film 22, an upper fine soil particle layer 23 and a non-woven fabric layer 24 are laid in sequence, the lower fine soil particle layer 21 is effectively flattened on a plane where the anti-seepage film 22 is laid, the laying effect of the anti-seepage film 22 is effectively improved, meanwhile, the laid anti-seepage film 22 is protected together with the upper fine soil particle layer 23, the protection effect of the anti-seepage film 22 is effectively improved, the protection effect of the anti-seepage film 22 is further improved due to the thickness of the upper fine soil particle layer 23, the anti-seepage effect of the composite anti-seepage layer 2 is effectively improved due to the composite geomembrane, the non-woven fabric layer 24 and the specification thereof are effectively used for intercepting the upper fine soil particle layer 23, loss of the upper fine soil particle layer 23 is effectively reduced, and the laying effect of the composite anti-.
S2, referring to the figures 2 and 3, laying a first layer of anti-blocking layer 3 consisting of large-particle gravel at the position of the retaining wall 1 close to the water inlet pipeline;
s3, manually digging a pipe groove 31 on the first anti-blocking layer 3, horizontally arranging the horizontal water distribution pipe 32 in the pipe groove 31, extending the circumferential side wall of the horizontal water distribution pipe 32 close to the position of the water inlet pipeline of the adjacent retaining wall 1 to the retaining wall 1, penetrating the retaining wall 1 and communicating with the water inlet pipeline;
the anti-blocking layer 3 is composed of 16mm-32mm broken stones, the thickness of the anti-blocking layer 3 close to the water inlet pipe is within the range of 0.5m-2m, in the embodiment 1, 0.9m, the inner bottom wall of the pipe groove 31 is abutted with the part of the bottom of the circumferential outer wall of the horizontal water distribution pipe 32, and the horizontal water distribution pipe 32 is a floral pipe with a plurality of holes on the circumferential outer wall and the hole diameter is less than 16 mm.
The setting of anti-blocking layer 3 is effectual to be supported for horizontal water distribution pipe 32, and the trompil of horizontal water distribution pipe 32 sets up the effectual water efficiency that leads to that improves horizontal water distribution pipe 32 simultaneously, and the effectual horizontal water distribution pipe 32 that supports for the pipe chase 31 has improved the stability of horizontal water distribution pipe 32 installation, and the rubble size of anti-blocking layer 3 sets up the effectual probability that reduces the hole jam of horizontal water distribution pipe 32 simultaneously, has improved the water distribution efficiency of horizontal water distribution pipe 32.
S4, referring to the figures 3 and 4, continuously laying the second anti-blocking layer 3 on the first anti-blocking layer 3 close to the horizontal water distribution pipe 32 in a manual mode, and filling and compacting the rest part of the first anti-blocking layer 3 by using mechanical equipment;
s5, paving a partition plate 5 on one side, far away from a retaining wall 1, of an anti-blocking layer 3 above the anti-blocking layer 3, paving a plurality of protection plates 6 for excavating equipment to advance on the upper surface of the paved anti-blocking layer 3, paving a separation layer 62 below the protection plates 6, sequentially backfilling a biological filter layer 4 into the foundation pit through mechanical equipment, sequentially paving the separation layer 62 and the protection plates 6 along with the advancing of the excavating equipment, and raising the protection plates 6 close to a water inlet pipeline by using soil layers to form a soil slope for the excavating equipment to enter;
referring to fig. 1 and 4, the separation layer 62 is made of non-woven fabric, the protection plate 6 is made of hard rubber plate, the bio-filter layer 4 is sequentially distributed from the direction close to the water inlet pipe to the direction close to the water outlet pipe, including a volcanic layer 41, a bio-sphere layer 42 and a gravel layer 43, volcanic rock particles used by the volcanic layer 41 range from 5mm to 20mm, in this embodiment 1, from 8mm to 16mm, and a volume ratio range from 40% to 60%, in this embodiment 1, 58%, bio-spheres in the bio-sphere layer 42 range from 5mm to 20mm, in this embodiment 1, from 8mm to 16mm, and account for 5% to 15% of the bio-filter layer 4, in this embodiment 1, 10%, and gravel in the gravel layer 43 range from 5mm to 20mm, in this embodiment 1, 6mm to 18mm, and the gravel layer 43 accounts for 40% to 60% of the bio-filter layer 4, in this example 1, it is 32%.
The partition plate 5 is also arranged at the joint between the volcanic rock layer 41, the biological ball layer 42 and the gravel layer 43, the height of the partition plate is the same as that of the biological filter layer 4, and a plurality of water through holes for water to pass through are formed in the partition plate 5.
S6, referring to FIG. 4, after the protective plates 6 are laid, the positions at two sides of the advancing direction of the excavating equipment are backfilled by the biological filter layers 4 through the excavating equipment, and the advancing is carried out sequentially;
the protective plates 6 are arranged at a distance from each other in a direction perpendicular to the direction of the excavating equipment, and the excavating equipment is used for backfilling the biofiltration layers 4.
The position of the protection plate 6 is provided with an effective advancing device which is convenient for the excavating equipment, the area of the excavating equipment rolled on the biological filter layer 4 is effectively reduced, meanwhile, the biological filter layer 4 is effectively filled through the excavating equipment, and the protection effect of the composite filter layer and the bottom filter pipe in the process of artificial wetland filling construction is improved
S7, referring to the figures 5 and 6, after the biological filter layer 4 is laid, arranging a partition plate 5 at the position of the biological filter layer 4 close to the water outlet pipeline, and enabling the partition plate 5 to be abutted against the side wall of the biological filter layer 4 close to the water outlet pipeline;
s8, paving a first anti-blocking layer 3 between the biological filter layer 4 and the retaining wall 1 close to the water outlet pipeline through excavating equipment, excavating a pipe groove 31 for installing a transverse water collecting pipe 33, and communicating the transverse water collecting pipe 33 with the water outlet pipeline after penetrating through the retaining wall 1, wherein the process which cannot be finished by the excavating equipment is finished manually;
and S9, continuously laying the second anti-blocking layer 3 above the first anti-blocking layer 3, compacting, returning excavating equipment, and sequentially removing the protective plate 6 and the separating layer 62.
Horizontal pipe 33 level setting is violently managed in the catchment, and the length direction of the parallel and revetment 1 of length direction, the horizontal pipe 33 of catchment extends to adjacent revetment 1 near the lateral wall intermediate position of adjacent revetment 1, and communicate with outlet conduit behind the revetment 1, horizontal pipe 33 of catchment opens the floral tube that has a plurality of holes for the circumference lateral wall, the horizontal pipe 33 lateral wall bottom of catchment is with the 31 inner wall butt of corresponding tube seat, the rubble specification in the anti-blocking layer 3 that is close to horizontal pipe 33 department of catchment is all the same, horizontal pipe 33 lateral wall aperture size of catchment is less than 16 mm.
The water body filtered layer by the biological filter layer 4 is filtered by the anti-blocking layer 3 close to the horizontal water collecting pipe 33, enters the horizontal water collecting pipe 33 through the gap of the horizontal water collecting pipe 33, flows into the water outlet pipeline through the horizontal water collecting pipe 33 to finish the outflow of the water body, wherein the anti-blocking layer 3 effectively intercepts and precipitates impurities in the water body, the pipe groove 31 effectively improves the stability of the transverse water collecting pipe 33 after installation, the arrangement of the pore diameter on the side wall of the transverse water collecting pipe 33 effectively reduces the probability that the gravels of the anti-blocking layer 3 enter the transverse water collecting pipe 33, further improving the water collecting efficiency of the horizontal water collecting pipe 33, backfilling the region which can not be backfilled by the excavating equipment in an artificial mode, effectively improving the backfilling effect of the artificial wetland, meanwhile, the protection effect on the transverse collector pipe 33 and the composite impermeable layer 2 is improved, and the filtering effect of the artificial wetland is further improved.
The implementation principle of the embodiment 1 of the application is as follows: when the horizontal flow constructed wetland construction is carried out, the composite impermeable layer 2 is laid in the excavated foundation pit, then the filler is filled from one end of the water inlet pipeline to one end close to the water outlet pipeline, when the anti-blocking layer 3 is laid, the efficiency of the installation of the built-in pipeline is effectively improved by a two-layer laying mode, the anti-blocking layer 3 is laid and then the protection plate 6 is laid corresponding to the position, the filler of the biological filter layer 4 is sequentially carried out, the protection plate 6 is laid sequentially in the advancing direction of the excavating equipment, the protection for the filler below is effectively improved by the position arrangement of the protection plate 6, the built-in pipeline is effectively protected at the same time, in the process of filling, the separation plate 5 for water to pass through is arranged between different material layers in the horizontal direction, the separation plate 5 effectively separates different material layers, the stability of the filler layer of the constructed wetland is improved, after the, excavating equipment returns, and retrieve the guard plate 6 of laying in proper order, through setting up the effectual extrusion area that has reduced excavating equipment to the constructed wetland filler of the mode that makes the step-by-step filler of excavating equipment in proper order of guard plate 6, dodges built-in pipeline simultaneously, and the effectual protection effect that has improved the packing layer of constructed wetland simultaneously is effectually protected built-in pipeline and compound inoxidizing coating, has improved constructed wetland to the effect of water purification.
The water body gets into horizontal water distribution pipe 32 through the inlet channel after by even to anti-blocking layer 3 of lateral wall trompil of horizontal water distribution pipe 32, anti-blocking layer 3 carries out preliminary interception filtration to bigger impurity in the water body, the water body loops through volcanic stratum 41 through the opening 51 of division board 5, bio-sphere layer 42, in the horizontal pipe 33 of catchment flows into after anti-blocking layer 3 of gravel layer 43, discharge in flowing into the outlet conduit through horizontal pipe 33 of catchment, volcanic stratum 41 filters the interception through the effectual impurity to the water body of porous structure of self, bio-sphere layer 42 purifies the filtration to the water body through the microorganism and the aquatic plant of self, the quality of the water body has been improved, gravel layer 43 carries out further filtration to the water body, filter the water body through multiple methods such as physics and biology, the effectual effect that artificial wetland purifies the water body that has improved.
Example 2
Referring to fig. 7 and 8, embodiment 2 of the present application is a vertical flow constructed wetland filler construction method, and the construction steps are different from those of embodiment 1 in that:
s1, referring to the figure 1, firstly, excavating and flattening a foundation pit on a construction ground by using excavating equipment, paving retaining walls 1 on two sides of the foundation pit, and paving a composite impermeable layer 2 on the excavated foundation pit;
s2, paving a first anti-blocking layer 3 consisting of large-particle broken stones at the position of the retaining wall 1 close to the water inlet pipeline;
s3, manually digging a pipe groove 31 on the first anti-blocking layer 3, horizontally arranging the horizontal water distribution pipe 32 in the pipe groove 31, extending the position of the circumferential side wall of the horizontal water distribution pipe 32, which is close to the water inlet pipeline of the adjacent revetment 1, towards the revetment 1, penetrating the revetment 1 to be communicated with the water inlet pipeline, sequentially communicating the water distribution perforated pipe 321 with the position of the horizontal water distribution pipe 32, which is far away from the adjacent revetment 1, temporarily blocking the exposed end of the water distribution perforated pipe 321, and enabling the bottom end of the revetment 1 of the adjacent water inlet pipeline to be higher than the bottom end of the revetment 1 of the adjacent water outlet pipeline;
s4, combining the figure 8 and the figure 9, laying the second anti-blocking layer 3 on the first anti-blocking layer 3 close to the horizontal water distribution pipe 32 and the floral water distribution pipe 321 in a manual mode, and filling and compacting the rest part of the first anti-blocking layer 3 by using mechanical equipment;
s5, paving a plurality of protective plates 6 for the advancing of excavating equipment on the upper surface of the paved anti-blocking layer 3, paving a separation layer 62 below the protective plates 6, sequentially backfilling the biological filter layers 4 into the foundation pit through mechanical equipment, paving the separation layer 62 and the protective plates 6 in sequence along with the advancing of the excavating equipment, and heightening the protective plates 6 close to the water inlet pipeline by soil layers to form a soil slope for the excavating equipment to enter;
the aperture of the side wall of each water distribution floral tube 321 is smaller than 8mm, the length direction of the side wall is perpendicular to the side wall of the protecting wall 1 adjacent to the horizontal water distribution tube 32, the distance between the water distribution floral tubes 321 is used for excavating equipment to pass through, and the position where the protecting plate 6 is laid avoids the lower water distribution floral tube 321.
The water distribution floral tube 321 effectively improves the efficiency of water body flowing in the vertical flow wetland, the aperture of the side wall of the water distribution floral tube 321 is effectively reduced, the probability that the filler blocks the side wall of the water distribution floral tube 321 is effectively reduced, the position of the protection plate 6 is effectively arranged to avoid the laid water distribution floral tube 321 for protection, and meanwhile, the packing layer is effectively protected.
S6, referring to FIGS. 10 and 11, after the protection plates 6 are laid, backfilling biological filter layers 4 in two layers at the positions at the two sides of the advancing direction of the excavating equipment by the excavating equipment, manually excavating pipe grooves 31 at the corresponding positions above the first biological filter layer 4, opening the blocked ends of the original water distribution floral pipes 321 and then communicating with the new water distribution floral pipes 321, sequentially installing and connecting the water distribution floral pipes 321, blocking the openings of the newly connected water distribution floral pipes 321 far away from the horizontal water distribution pipes 32, sequentially advancing, and stopping the connection of the water distribution floral pipes 321 at the tail end positions of the biological filter layers 4;
s7, paving a first anti-blocking layer 3 between the biological filter layer 4 and the retaining wall 1 close to the water outlet pipeline through excavating equipment, excavating a pipe groove 31 for installing a transverse water collecting pipe 33, and communicating the transverse water collecting pipe 33 with the water outlet pipeline after penetrating through the retaining wall 1, wherein the process which cannot be finished by the excavating equipment is finished manually;
s8, with reference to fig. 12, laying the second anti-blocking layer 3 on the first anti-blocking layer 3, compacting, withdrawing the excavating equipment, and removing the protective plate 6 and the separating layer 62 in sequence.
The water distribution floral tubes 321 are sequentially connected along with the progress of the filler, and one end far away from the water inlet pipeline is plugged, so that the probability of the filler entering the water distribution floral tubes 321 is effectively reduced, the smoothness of the water distribution floral tubes 321 is improved, the arrangement of the water distribution floral tubes 321 effectively improves the flowing uniformity of the water body to the biological filter layer 4, the probability of local siltation of the water body is effectively reduced, and the effect of purifying and filtering the water body by the artificial wetland is improved.
The implementation principle of embodiment 2 of the present application is as follows: when the vertical flow wetland is subjected to filling construction, the vertical flow wetland is integrally filled in two layers, the water distribution floral tubes 321 are installed section by section according to the stepping progress, the installation efficiency of the water distribution floral tubes 321 is effectively improved, the uniformity of the water flowing to the biological filter layer 4 is effectively improved due to the arrangement of the water distribution floral tubes 321, meanwhile, the position of the protection plate 6 is effectively avoided for the water distribution floral tubes 321, the area of the lower filler rolled by the excavating equipment during the artificial wetland filling construction is effectively reduced, the lower water distribution floral tubes 321 are effectively avoided, the protection of the water distribution floral tubes 321, the composite impermeable layer 2 and the filler is improved, and the water purification effect of the artificial wetland is further improved.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The constructed wetland filler construction method is characterized by comprising the following steps: the method comprises the following steps:
s1, firstly, excavating and flattening a foundation pit of the construction site by using excavating equipment, paving retaining walls (1) on two sides of the foundation pit, and paving a composite impermeable layer (2) on the excavated foundation pit;
s2, paving a first anti-blocking layer (3) consisting of large-particle broken stones at the position of the retaining wall (1) close to the water inlet pipeline;
s3, excavating a pipe groove (31) on the first anti-blocking layer (3), and placing the horizontal water distribution pipe (32) in the pipe groove (31) to enable the middle part of the horizontal water distribution pipe to extend towards the retaining wall (1) and then to penetrate through the retaining wall (1) to be communicated with a water inlet pipeline;
s4, continuously laying a second anti-blocking layer (3) on the first anti-blocking layer (3) close to the horizontal water distribution pipe (32) in a manual mode, and filling and compacting the rest part of the first anti-blocking layer (3) by using mechanical equipment;
s5, paving a partition plate (5) on one side, far away from the retaining wall (1), of the anti-blocking layer (3), paving a plurality of protective plates (6) for excavating equipment to advance on the upper surface of the paved anti-blocking layer (3), paving a separation layer (62) below the protective plates (6), sequentially backfilling the biological filter layer (4) into the foundation pit through mechanical equipment, and sequentially paving the separation layer (62) and the protective plates (6) along with the advancing of the excavating equipment;
s6, after the protection plates (6) are laid, backfilling biological filter layers (4) at the positions on the two sides of the advancing direction of the excavating equipment through the excavating equipment, and advancing in sequence;
s7, after the biological filter layer (4) is laid, arranging a partition plate (5) at the position of the biological filter layer (4) close to the water outlet pipeline, and enabling the partition plate (5) to be abutted against the side wall of the biological filter layer (4) close to the water outlet pipeline;
s8, paving a first anti-blocking layer (3) between the biological filter layer (4) and the retaining wall (1) close to the water outlet pipeline through excavating equipment, excavating a pipe groove (31) for installing a transverse water collecting pipe (33), enabling the transverse water collecting pipe (33) to penetrate through the retaining wall (1) and then to be communicated with the water outlet pipeline, and finishing the process which cannot be finished by the excavating equipment in a manual mode;
and S9, continuously laying a second anti-blocking layer (3) above the first anti-blocking layer (3), compacting, returning excavating equipment, and sequentially removing the protective plate (6) and the separating layer (62).
2. The constructed wetland filler construction method according to claim 1, characterized in that: the composite impermeable layer (2) sequentially comprises a lower fine soil particle layer (21), an impermeable membrane (22), an upper fine soil particle layer (23) and a non-woven fabric layer (24) from bottom to top.
3. The constructed wetland filler construction method according to claim 2, characterized in that: the thickness of the lower fine soil particle layer (21) is 50mm-200mm, the upper surface of the lower fine soil particle layer (21) is flatly pressed, and the thickness of the upper fine soil particle layer (23) is 200-500 mm.
4. The constructed wetland filler construction method according to claim 2, characterized in that: the impermeable membrane (22) is a geomembrane, and the thickness is 0.5mm-2 mm.
5. The constructed wetland filler construction method according to claim 2, characterized in that: the index of the non-woven fabric layer (24) is 100 grams per square meter to 300 grams per square meter.
6. The constructed wetland filler construction method according to claim 1, characterized in that: the biological filter layer (4) is sequentially composed of a volcanic rock layer (41), a biological ball layer (42) and a gravel layer (43) from the horizontal water distribution pipe (32) to the direction close to the horizontal water collecting pipe (33).
7. The constructed wetland filler construction method according to claim 6, characterized in that: the volcanic rock particles in the volcanic rock layer (41) are 5-20 mm in size and account for 40-60% of the biological filter layer (4).
8. The constructed wetland filler construction method according to claim 6, characterized in that: the size of the biological balls in the biological ball layer (42) is 5mm-20mm and accounts for 5% -15% of the biological filter layer (4).
9. The constructed wetland filler construction method according to claim 6, characterized in that: the size of the broken stone in the broken stone layer (43) is 5mm-20mm and accounts for 40% -60% of the biological filter layer (4).
10. The constructed wetland filler construction method according to claim 1, characterized in that: and a partition plate (5) for separating two adjacent different layers is arranged between the layers of the biological filter layer (4), and a plurality of circulation holes (51) for water to pass through are formed in the partition plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224605.9A CN112850909A (en) | 2021-03-01 | 2021-03-01 | Constructed wetland filler construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224605.9A CN112850909A (en) | 2021-03-01 | 2021-03-01 | Constructed wetland filler construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112850909A true CN112850909A (en) | 2021-05-28 |
Family
ID=75990554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110224605.9A Pending CN112850909A (en) | 2021-03-01 | 2021-03-01 | Constructed wetland filler construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112850909A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160017588A1 (en) * | 2014-07-15 | 2016-01-21 | Chongqing University | System for treating and recycling rainwater |
| CN106745783A (en) * | 2017-01-23 | 2017-05-31 | 岭南新科生态科技研究院（北京）有限公司 | A kind of horizontal flow artificial wetland |
| CN109368810A (en) * | 2018-12-24 | 2019-02-22 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Block-proof type horizontal subsurface flow wetland |
| CN209872521U (en) * | 2018-11-09 | 2019-12-31 | 山西四建集团有限公司 | Vertical subsurface flow wetland system for preventing perforated pipes and fillers from being blocked |
| CN112012228A (en) * | 2020-08-11 | 2020-12-01 | 北京翔鲲水务建设有限公司 | Rapid construction method for filling filter material in constructed wetland unit tank |
| CN112093904A (en) * | 2020-08-31 | 2020-12-18 | 安徽东方风景建设有限公司 | Subsurface flow wetland construction method |
-
2021
- 2021-03-01 CN CN202110224605.9A patent/CN112850909A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160017588A1 (en) * | 2014-07-15 | 2016-01-21 | Chongqing University | System for treating and recycling rainwater |
| CN106745783A (en) * | 2017-01-23 | 2017-05-31 | 岭南新科生态科技研究院（北京）有限公司 | A kind of horizontal flow artificial wetland |
| CN209872521U (en) * | 2018-11-09 | 2019-12-31 | 山西四建集团有限公司 | Vertical subsurface flow wetland system for preventing perforated pipes and fillers from being blocked |
| CN109368810A (en) * | 2018-12-24 | 2019-02-22 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Block-proof type horizontal subsurface flow wetland |
| CN112012228A (en) * | 2020-08-11 | 2020-12-01 | 北京翔鲲水务建设有限公司 | Rapid construction method for filling filter material in constructed wetland unit tank |
| CN112093904A (en) * | 2020-08-31 | 2020-12-18 | 安徽东方风景建设有限公司 | Subsurface flow wetland construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8287728B2 (en) | Elevated swale for treatment of contaminated stormwater | |
| JP6670419B2 (en) | Spiral sunken green belt for efficient runoff pollutant reduction | |
| CN209872521U (en) | Vertical subsurface flow wetland system for preventing perforated pipes and fillers from being blocked | |
| CN106088289A (en) | A kind of water storage system for sponge Front river course road and construction method | |
| CN112252115A (en) | Road structure of recoverable rainwater in sponge city | |
| CN105967475A (en) | Sludge purifying, regulating and treating system | |
| CN205874886U (en) | Town road rainwater processing system | |
| US7727388B1 (en) | Septic tank and drainfield products, systems and methods | |
| CN211283925U (en) | Formula of sinking buffering area highway runoff purifier | |
| CN113356133A (en) | Bank protection structure suitable for rocky bank slope of hydro-fluctuation belt and construction method | |
| KR102228264B1 (en) | Vegetational type of non-point polltants reduction facility and Construction method there of | |
| CN206203996U (en) | A kind of shore protection system for riverway water quality purification | |
| Dierickx | Research and developments in selecting subsurface drainage materials | |
| CN110771291B (en) | Covering layer partitioning method for improving leaching and salt discharging efficiency | |
| CN112850909A (en) | Constructed wetland filler construction method | |
| CN217438821U (en) | Ecological bank protection for treating waterfront farmland runoff pollution | |
| CN214883451U (en) | Ecological dam permeates water with block dirty purification performance | |
| CN212506609U (en) | Sponge city oozes row structure | |
| CN113152384A (en) | Ecological dam permeates water with block dirty purification performance | |
| CN112900603A (en) | Silica sand water storage and purification pool and construction process thereof | |
| CN206477418U (en) | A kind of efficient spiral concave herbaceous field for cutting down Runoff contaminants | |
| CN112093904A (en) | Subsurface flow wetland construction method | |
| Stuyt et al. | Drain envelopes | |
| CN106759173B (en) | A kind of method in hidden pipe gutter drainage improvement cold spring field | |
| CN104944590A (en) | Rural non-point source sewage treatment multi-layer ladder seepage drainage and non-point source sewage treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |
|
| RJ01 | Rejection of invention patent application after publication |