CN215249870U - Anti-blocking type constructed wetland - Google Patents
Anti-blocking type constructed wetland Download PDFInfo
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- CN215249870U CN215249870U CN202120424768.7U CN202120424768U CN215249870U CN 215249870 U CN215249870 U CN 215249870U CN 202120424768 U CN202120424768 U CN 202120424768U CN 215249870 U CN215249870 U CN 215249870U
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- 239000011159 matrix material Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000010802 sludge Substances 0.000 claims abstract description 32
- 238000011001 backwashing Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 11
- 239000010902 straw Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 9
- 239000000758 substrate Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- -1 debris Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000005273 Canna coccinea Nutrition 0.000 description 1
- 240000008555 Canna flaccida Species 0.000 description 1
- 241000931336 Chloris truncata Species 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 241000498251 Hydrilla Species 0.000 description 1
- 241000543445 Vallisneria spiralis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an anti-blocking constructed wetland, which comprises a main treatment area and a sludge area positioned below the main treatment area, wherein the main treatment area is sequentially provided with a plant area, a dense mesh type filter screen, a natural filter material layer, a small-particle-size matrix layer, a first backwashing pipe, a large-particle-size matrix layer, a second backwashing pipe and a bearing layer from top to bottom; the upper part of one side of the main treatment area is provided with a water inlet pipe, and the lower part of the other side of the main treatment area is provided with a water outlet pipe; the opposite side of the water outlet pipe is provided with a cleaning area. The utility model discloses set up the effective suspended substance of holding back of multichannel defence line intaking, when the jam begins to appear on the matrix upper end, the recoil washes away the suspended substance that dehumidifies the overground layer and hold back, realizes the quick recovery operation of wetland. The utility model discloses a vertical structure design need not establish the front end filtering pond in addition, reduces the wetland area, has advantages such as development area is little, the running cost is low, operating duration is long.
Description
Technical Field
The utility model relates to an artificial wetland technical field relates to a prevent stifled type artificial wetland.
Background
The blockage is a main factor for limiting the popularization of the constructed wetland in the domestic sewage treatment of various towns and rural areas. According to investigation, about 50 percent of constructed wetlands have different degrees of blockage after 3 to 5 years of operation. The main reasons for causing the wetland blockage are as follows: the excessive water inflow suspended substances are trapped by the upper-layer matrix, so that the upper-layer matrix is blocked; sand, stone, debris, sediment, etc. accumulate at the bottom of the wetland bed, resulting in blockage of the lower wetland. The artificial wetland blockage is slowed down by means of alternate rest, in-situ backwashing and the like, but the floor area is increased by two times or more than three times by adopting the alternate rest scheme, and after the in-situ backwashing, secondary pollution blockage is easily caused if the backwashing sludge water is not separated from the wetland system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide an anti-blocking type constructed wetland, improve the absorption dephosphorization ability of constructed wetland matrix, improve the anti-blocking ability of constructed wetland system back flush.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
an anti-blocking constructed wetland comprises a main treatment area and a sludge area positioned below the main treatment area, wherein the main treatment area is sequentially provided with a plant area, a dense mesh type filter screen, a natural filter material layer, a small-particle-size matrix layer, a first backwashing pipe, a large-particle-size matrix layer, a second backwashing pipe and a supporting layer from top to bottom;
the upper part of one side of the main treatment area is provided with a water inlet pipe, and the lower part of the other side of the main treatment area is provided with a water outlet pipe; the opposite side of the water outlet pipe is provided with a cleaning area.
Preferably, a plastic plate is arranged on the plant area, a plurality of planting cups are uniformly arranged on the plastic plate at intervals, and plants are planted in the planting cups.
The plants cultivated in the planting cups can be emergent aquatic plants such as canna, thaliana, windmill grass and the like, or submerged plants such as tape grass, hydrilla verticillata and the like.
Preferably, the mesh number of the dense mesh type filter screen is 100-150 meshes.
Preferably, the natural filter medium layer is a palm mat or a straw mat, and the thickness of the natural filter medium layer is 3-20 cm.
Preferably, the small-particle size substrate layer adopts a substrate with the particle size of 5-20 mm.
Preferably, a plurality of back flushing holes are formed in each of the first back flushing pipe and the second back flushing pipe.
Preferably, the large-particle-size matrix layer adopts a matrix with the particle size of 10-30 mm.
The small-particle-size matrix layer and the large-particle-size matrix layer are prepared from aluminum compounds, iron-containing compounds, calcium-containing mixtures, clay and silicon dioxide which are mixed according to the weight ratio of 0.5-15:0.5-15:0.5-10:5-40: 10-50. I.e. the raw materials of the two matrix layers are identical, differing in the particle size of the raw materials.
Preferably, the supporting layer is a grating plate with the aperture of 5-10 mm.
The utility model discloses a bearing layer be in glass steel grid plate, hot-galvanize steel grid plate, grafting steel grid plate, the zinc-plated steel grid plate arbitrary one kind.
Preferably, one side of the supporting layer extends to form a section, and a baffle is vertically arranged at the tail end of the supporting layer to form a cleaning area.
Preferably, the sludge area is a sludge discharge hopper arranged in an inverted trapezoid shape, and one side of the upper part of the sludge area is communicated with the cleaning area through a bearing layer; the side of the sludge area is provided with a sludge discharge pipe and a water discharge pipe, and the water discharge pipe is communicated with the water outlet pipe.
Preferably, the water inlet pipe, the water outlet pipe, the sludge discharge pipe and the water discharge pipe are all provided with valves.
The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:
1. the utility model discloses a close mesh formula filter screen, natural filter material layer, small-size footpath matrix etc. multiple defence lines effectively hold back into the suspended substance that intakes, when the jam begins to appear in the matrix upper end, utilize the suspended substance that first backwash pipe recoil washing dehumidification overground layer was held back, realize the quick recovery operation of wetland. And separating the substrate from the sediment by using a second backwashing pipe, collecting the sediment by using a sludge area, and discharging and removing the sediment. The upper and lower anti-blocking systems are combined, so that the blockage of the constructed wetland can be effectively prevented.
2. The utility model discloses a vertical structure design, wetland top is located to filter screen, palm pad/straw mat, "sand filtration" (small-grain diameter matrix) equipartition, does not need to establish in addition the front end filtering pond. The sludge area is also designed as a sedimentation tank, and the like, so that the wetland space is efficiently utilized, and the wetland area is reduced.
3. The filter screen and the natural filter material are hung on the side wall of the cleaning area in an inverted mode to be cleaned, and the area of the cleaning area can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the attached figure, 1-a main treatment area, 2-a sludge area, 3-a cleaning area, 4-a water inlet pipe, 5-a plant area, 6-a dense mesh type filter screen, 7-a natural filter material layer, 8-a small-particle-size matrix layer, 9-a first backwashing pipe, 10-a large-particle-size matrix layer, 11-a second backwashing pipe, 12-a water outlet pipe, 13-a water outlet pipe, 14-a sludge discharge pipe, 15-a valve and 16-a bearing layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the utility model provides an anti-blocking constructed wetland, including main treatment area 1 and sludge area 2 located below main treatment area 1, main treatment area 1 is equipped with vegetation area 5 from top to bottom in proper order, 100 mesh dense mesh formula filter screen 6, natural filter material layer 7 (this embodiment adopts the palm pad that thickness is 10 cm), small particle size matrix layer 8, first backwash pipe 9, large particle size matrix layer 10, second backwash pipe 11 and support layer; the upper part of one side of the main treatment area 1 is provided with a water inlet pipe 4, and the lower part of the other side is provided with a water outlet pipe 12. And a plurality of back flushing holes with the aperture of 4mm are formed in the first back flushing pipe 9 and the second back flushing pipe 11. The supporting layer is made of hot-dip galvanized steel and is a grating plate 16 with the aperture of 5-10 mm. One section of the supporting layer 16 extends out, and a baffle is vertically arranged at the tail end to form a cleaning area 3.
The plant area 5 is provided with a plastic plate, a plurality of planting cups are uniformly arranged on the plastic plate at intervals, and emergent aquatic plants are planted in the planting cups.
The small-particle-size matrix layer 8 and the large-particle-size matrix layer 9 are prepared from a mixture of an aluminum compound, an iron-containing compound, a calcium-containing mixture, clay and silicon dioxide which are mixed according to a weight ratio of 5:5:10:40: 40. Namely, the raw materials of the two matrix layers are the same, the difference is that the particle sizes of the raw materials are different, the particle size of the matrix adopted by the small particle size matrix layer 8 is 5-10mm, the particle size of the matrix adopted by the large particle size matrix layer 9 is 20-30mm, and the thicknesses of the two matrix layers are both 1.2 m.
The sludge area 2 is a sludge discharge hopper arranged in an inverted trapezoid shape, and one side of the upper part of the sludge area 2 is communicated with the cleaning area 3 through a bearing layer 16; the side surface of the sludge area 2 is provided with a sludge discharge pipe 14 and a water discharge pipe 13, and the water discharge pipe 13 is communicated with the water outlet pipe 12. Valves 15 are arranged on the water inlet pipe 4, the water outlet pipe 12, the sludge discharge pipe 14 and the water discharge pipe 13.
The utility model discloses three kinds of anti-blocking operation modes have:
(1) an anti-blocking mode: sewage flows through a dense mesh type filter screen 6, a natural filter material layer 7, a small-particle-size matrix layer 8 and other defense lines from top to bottom, and water-entering suspended substances are effectively intercepted.
(2) A cleaning mode: when being in anti-blocking mode operation, because natural filter material layer 7 blocks up when leading to the water level to rise, can shift to the cleaning zone 3 with close mesh filter screen 6, natural filter material layer 7 and clear up, resume to main treatment area 1 after the clearance again. The cleaning water flows into the sludge area 2 at the bottom through the supporting layer 16, and is discharged after sludge-water separation is realized in the sludge area 2.
During normal operation, the dense mesh type filter screen 6 and the natural filter material layer 7 can be cleaned every 14 days.
(3) A backwashing mode: when the upper end of the substrate layer begins to be blocked, the first backwashing pipe 9 is used for backwashing and washing off suspended substances intercepted by the dehumidified overground layer, and the rapid recovery operation of the wetland is realized. The sediment is separated from the substrate layer by the second back flushing pipe 11, and the sediment is collected by the sludge area 2 and discharged and removed. Fine and denser sediments are sunk into the sludge zone 2 through the matrix gap by backwashing and are removed through the sludge zone 2.
During normal operation, both substrate layers may be backwashed every 14 days. The whole constructed wetland is cleaned once every 6 months.
The utility model discloses dephosphorization efficiency mainly realizes through small-particle size matrix layer 8 and big particle size matrix layer 10, and main dephosphorization component is aluminiferous compound, iron compound, calcium compound, clay etc.. Because the blockage of the artificial wetland is mainly caused by sediments intercepted at the upper part of the wetland and deposited at the bottom of the wetland, the blockage prevention of the wetland is mainly realized by an upper-layer blockage prevention system and a lower-layer blockage prevention system. Therefore, the dense mesh type filter screen 6, the natural filter material layer 7, the small-particle-size matrix layer 8 and the first backwashing pipe 9 form an upper-layer anti-clogging system of the artificial wetland, and the upper-layer anti-clogging system is mainly used for removing suspended substances causing the upper layer of the wetland to be clogged; the second back flushing pipe 11, the supporting layer 16 and the sludge area 2 form a lower anti-blocking system of the artificial wetland, and are mainly used for removing sediments deposited at the bottom of the wetland.
The constructed wetland system is used for town sewage treatment, and compared with the treatment effect of a common constructed wetland, the treatment effect of the sewage is shown in table 1. The area of each of the 2 wetlands is 10m2The amount of treated water was 15m3And d. Cleaning 2 wetlands once every 6 months, and respectively taking the cleaned matrixes from the upper part, the middle part and the lower part of the wetland after cleaning to detect the content of suspended substances and sediments, thereby predicting the time for the wetland to be blocked.
| Influent SS | Yielding water SS | Water inlet TP | Effluent TP | Age of blockage | |
| General artificial wetland | 112mg/L | 106mg/L | 4.25mg/L | 3.54mg/ |
2 years old |
| Anti-blocking type constructed wetland system | 112mg/L | 15mg/L | 4.25mg/L | 0.45mg/L | For 10 years |
TABLE 1
Example 2
The difference between this example and example 1 is that the mesh number of the dense mesh type filter screen 6 is 150 meshes, the thickness of the palm pad is 15cm, and the aperture of the back washing hole is 6 mm.
The anti-blocking constructed wetlands of the present example were used to perform experimental comparison as in example 1, and the sewage treatment effect is shown in table 2.
| Influent SS | Yielding water SS | Water inlet TP | Effluent TP | Age of blockage | |
| General artificial wetland | 252mg/L | 246mg/L | 4.11mg/L | 3.33mg/L | 0.5 years old |
| Anti-blocking type constructed wetland | 252mg/L | 34mg/L | 4.11mg/L | 0.24mg/ |
5 years old |
TABLE 2
All the embodiments of the present invention are not described in detail in the prior art or can be implemented by the prior art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An anti-blocking constructed wetland comprises a main treatment area and a sludge area positioned below the main treatment area, and is characterized in that the main treatment area is sequentially provided with a plant area, a dense mesh type filter screen, a natural filter material layer, a small-particle-size matrix layer, a first backwashing pipe, a large-particle-size matrix layer, a second backwashing pipe and a supporting layer from top to bottom;
the upper part of one side of the main treatment area is provided with a water inlet pipe, and the lower part of the other side of the main treatment area is provided with a water outlet pipe; the opposite side of the water outlet pipe is provided with a cleaning area.
2. The anti-blocking constructed wetland according to claim 1, wherein a plastic plate is arranged on the plant area, a plurality of planting cups are uniformly arranged on the plastic plate at intervals, and plants are planted in the planting cups.
3. The anti-blocking constructed wetland according to claim 1, wherein the mesh number of the dense mesh type filter screen is 100-150 meshes.
4. The anti-blocking constructed wetland according to claim 1, wherein the natural filter material layer is a palm mat or a straw mat, and the thickness of the natural filter material layer is 3-20 cm.
5. The anti-blocking constructed wetland according to claim 1, wherein the small-particle-size matrix layer is made of matrix with a particle size of 5-20 mm.
6. The anti-blocking constructed wetland according to claim 1, wherein a plurality of back-flushing holes are formed in each of the first back-flushing pipe and the second back-flushing pipe.
7. The anti-blocking constructed wetland according to claim 1, wherein the large-particle-size matrix layer is made of a matrix with the particle size of 10-30 mm.
8. The anti-blocking constructed wetland according to claim 1, wherein the supporting layer is a grating plate with the aperture of 5-10 mm.
9. The anti-blocking constructed wetland according to claim 8, wherein a section extends from one side of the supporting layer, and a baffle is vertically arranged at the tail end of the supporting layer to form a cleaning area.
10. The anti-blocking constructed wetland according to claim 1, wherein the sludge area is a sludge discharge hopper arranged in an inverted trapezoid shape, and one side of the upper part of the sludge area is communicated with the cleaning area through a bearing layer; the side of the sludge area is provided with a sludge discharge pipe and a water discharge pipe, and the water discharge pipe is communicated with the water outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120424768.7U CN215249870U (en) | 2021-02-26 | 2021-02-26 | Anti-blocking type constructed wetland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120424768.7U CN215249870U (en) | 2021-02-26 | 2021-02-26 | Anti-blocking type constructed wetland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215249870U true CN215249870U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120424768.7U Active CN215249870U (en) | 2021-02-26 | 2021-02-26 | Anti-blocking type constructed wetland |
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| Country | Link |
|---|---|
| CN (1) | CN215249870U (en) |
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2021
- 2021-02-26 CN CN202120424768.7U patent/CN215249870U/en active Active
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Address after: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee after: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: No. 12, Kexing Road, high tech Zone, Nanning, Guangxi 530000 Patentee before: GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Country or region before: China |
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Effective date of registration: 20240508 Address after: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee after: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region after: China Patentee after: Guangxi Boshike Environmental Technology Co.,Ltd. Address before: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee before: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region before: China |