CN114988586B - Assembled vertical subsurface flow structure, construction method and sewage treatment method - Google Patents
Assembled vertical subsurface flow structure, construction method and sewage treatment method Download PDFInfo
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- CN114988586B CN114988586B CN202210652560.XA CN202210652560A CN114988586B CN 114988586 B CN114988586 B CN 114988586B CN 202210652560 A CN202210652560 A CN 202210652560A CN 114988586 B CN114988586 B CN 114988586B
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to an assembled vertical subsurface flow structure, a construction method and a sewage treatment method, wherein the scheme comprises the following steps: prefabricating each undercurrent structural unit; prefabricating each water collecting barrel; hoisting each undercurrent structure unit; lifting the first water collecting barrel, the third water collecting barrel, the second water collecting barrel and the fourth water collecting barrel to two sides of the multi-stage undercurrent structure respectively; a water collecting pipe is respectively arranged between the first outlet and the first water collecting barrel, between the second outlet and the second water collecting barrel, between the third outlet and the third water collecting barrel, and between the fourth outlet and the fourth water collecting barrel; and a water inlet pipeline is arranged at the water inlet, a pumping return pipe I is arranged between the water collecting barrel I and the water inlet pipeline, a pumping return pipe II is arranged between the water collecting barrel II and the water inlet pipeline, a pumping return pipe III is arranged between the water collecting barrel III and the submerged flow structural unit II, and a pumping return pipe IV is arranged between the water collecting barrel IV and the submerged flow structural unit II, so that construction is completed. The invention has the advantages of small occupied area, high construction speed, high sewage treatment efficiency and stable effluent quality.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an assembled vertical subsurface flow structure, a construction method and a sewage treatment method.
Background
Many methods for treating sewage are generally classified into physical, chemical, biological, and the like. Through the investigation of more than 100 large sewage treatment plants, the problems of large occupied area, high construction and operation cost, low efficiency and the like exist, the common efficiency is less than 70%, and the low efficiency is only 40%. The sewage treatment cost and energy consumption are basically high in energy consumption and low in efficiency.
At present, the constructed wetland sewage treatment process has the advantages of low construction and operation cost and the like, is widely applied, but still has the great problems: (1) the occupied area is large; (2) is easily affected by diseases and insect pests; (3) the complexity of biology and waterpower increases the knowledge of the treatment mechanism, technical dynamics and influencing factors, and because the design operation parameters are incorrect, the design is incorrect, the water cannot meet the design requirements or the standard discharge cannot be met, and some artificial wetlands become pollution sources instead. In addition, the constructed wetland needs a longer period to achieve efficient and stable operation, and is not suitable for being applied to sewage treatment plants with large water treatment quantity, large water quality change and high management level.
Therefore, it is very important to find an assembled vertical subsurface flow structure, a construction method and a sewage treatment method which have small occupied area, high construction speed, high sewage treatment efficiency and stable effluent quality.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an assembled vertical subsurface flow structure, a construction method and a sewage treatment method.
In order to achieve the above object, the present invention adopts the following technical scheme: the construction method of the assembled vertical subsurface flow structure comprises the following steps:
s00, prefabricating each undercurrent structural unit: prefabricating a first submerged structure unit, a second submerged structure unit, a third submerged structure unit and a bottom unit of the submerged structure respectively, filling slag, slag and crushed stone mixed filler and reserving a water inlet at the top in the first prefabricated submerged structure unit, filling volcanic rock mixed filler and reserving a first outlet and a second outlet in the second submerged structure unit, filling activated carbon filler and reserving a third outlet in the third submerged structure unit, filling foam filtering bead filler in the bottom unit of the submerged structure and reserving a fourth outlet;
s10, prefabricating each water collecting barrel: respectively overlapping and prefabricating a first water collecting barrel, a third water collecting barrel, a second water collecting barrel and a fourth water collecting barrel, reserving a water collecting pipe orifice at the upper part of each water collecting barrel, reserving a reflux pipe orifice at the lower part of each water collecting barrel, and internally installing a water quality detection device;
s20, hoisting each undercurrent structural unit: hoisting a bottom unit of the submerged structure to a designated position, bolting a butt-joint steel plate on the bottom unit of the submerged structure, then hoisting a third submerged structure unit to move above the bottom unit of the submerged structure, carrying out quick and accurate landing and butt-joint fixation on the third submerged structure unit and the butt-joint steel plate of the bottom unit of the submerged structure, and sequentially completing hoisting of a second submerged structure unit and a first submerged structure unit based on the same operation to form a multi-stage submerged structure;
s30, correspondingly hoisting the prefabricated water collecting barrel I, the water collecting barrel III, the water collecting barrel II and the water collecting barrel IV to two sides of the multi-stage undercurrent structure respectively;
s40, a water collecting pipe is respectively arranged between the first outlet and the first water collecting barrel, between the second outlet and the second water collecting barrel, between the third outlet and the third water collecting barrel, and between the fourth outlet and the fourth water collecting barrel;
s50, installing a water inlet pipeline at a water inlet, installing a pumping return pipe I between the water collecting barrel I and the water inlet pipeline, installing a pumping return pipe II between the water collecting barrel II and the water inlet pipeline, installing a pumping return pipe III between the water collecting barrel III and the submerged flow structural unit II, and installing a pumping return pipe IV between the water collecting barrel IV and the submerged flow structural unit II to finish the construction of the assembled vertical submerged flow structure.
Further, in step S00, the prefabricating step of the first undercurrent structural unit is as follows:
separately prefabricating a top plate reserved with a water inlet, and reserving a pre-buried bolt hole groove;
reserving an interface I at one side of the bottom plate when prefabricating the bottom plate and the side plate, and installing embedded bolts at corresponding positions at the top of the side plate;
overlapping and binding reinforcing steel bars on the bottom plate and the side plates to form two straight partition plates;
filling mixed filler of slag, slag and crushed stone into a first submerged flow structural unit;
fixing the top plate through the embedded bolts, and making the joint waterproof;
and the upper and lower parts outside the side plates are bolted with the mounting ear plates.
Further, the first undercurrent structural unit is a cube, the upper and lower parts of the first undercurrent structural unit are respectively provided with an ear plate, one side of the top plate is provided with a water inlet and a straight partition plate, one side of the bottom plate is provided with a straight partition plate and a first interface which are connected, the top of the side plate is provided with an embedded bolt hole groove, and the periphery of the top plate is provided with an embedded bolt hole groove and is fixed at the top of the side plate through an embedded bolt.
Further, the undercurrent structural unit II, the undercurrent structural unit III and the undercurrent structural bottom unit are cubes.
Further, each interface and outlet of adjacent undercurrent structural units are provided with a filter grid, and each interface is provided with a water stop rubber ring.
Further, the upper and lower parts of the undercurrent structural unit II are also provided with lug plates, one side of the top plate is provided with a first connector and a connected L-shaped partition plate, one side of the bottom plate is provided with a second connector and a connected L-shaped partition plate, the bottom of a side plate adjacent to the second connector is provided with a second outlet, the bottom of the side plate at the other side is provided with a first outlet, the top of the side plate is also provided with a pre-buried bolt hole groove, and the periphery of the top plate is also provided with a pre-buried bolt hole groove and is also fixed at the top of the side plate through pre-buried bolts.
Further, the upper and lower parts of the undercurrent structural unit III are also provided with lug plates, one side of the top plate is provided with an interface II and a straight partition plate, one side of the bottom plate is provided with a straight partition plate and an interface III which are connected, the bottom of a side plate close to the interface III is provided with an outlet III, the top of the side plate is also provided with an embedded bolt hole groove, and the periphery of the top plate is also provided with an embedded bolt hole groove and is also fixed at the top of the side plate through an embedded bolt.
Further, the bottom unit upper portion of the undercurrent structure is also provided with an ear plate, one side of the top plate is provided with a third interface and an L-shaped partition plate, a fourth outlet and a straight partition plate connected with the third interface are arranged on a side plate far away from the third interface, the top of the side plate is also provided with an embedded bolt hole groove, the periphery of the top plate is also provided with an embedded bolt hole groove, and the top plate is also fixed at the top of the side plate through an embedded bolt.
The assembled vertical undercurrent structure is manufactured by the construction method of the assembled vertical undercurrent structure.
The sewage treatment method based on the assembled vertical undercurrent structure comprises the following steps of:
sewage enters the submerged flow structural unit I through the water inlet to carry out first-stage filtration treatment, and enters the submerged flow structural unit II through the interface I to carry out second-stage treatment;
the water body after the primary filtering purification enters the first submerged flow structural unit and enters the first water collecting barrel through the first outlet, the other part of the water body enters the second submerged flow structural unit and is subjected to the secondary filtering purification, the water in the first water collecting barrel is discharged and utilized if the water is detected to be qualified, and if the water is not qualified, the water flows back to the water inlet pipeline through the first pumping return pipe and enters the first submerged flow structural unit for re-filtering treatment;
one part of water body subjected to secondary filtration purification of the submerged flow structural unit II enters the water collection barrel II through the outlet II, the other part enters the submerged flow structural unit III for tertiary filtration purification, water in the water collection barrel II is discharged and utilized if the water is detected to be qualified, and if the water is not qualified, the water flows back to the water inlet pipeline through the pumping return pipe II to enter the submerged flow structural unit I for re-filtration treatment;
after entering the submerged flow structural unit III, a part of water body subjected to second-stage filtration and purification enters the water collection barrel III through the outlet III, and the other part enters the bottom unit of the submerged flow structure through third-stage filtration and purification for fourth-stage filtration and purification, wherein water in the water collection barrel III is discharged and utilized if the water is detected to be qualified, and if the water is not qualified, the water flows back to the initial section entering the submerged flow structural unit II through the pumping return pipe III for re-filtration treatment;
and the water body subjected to fourth-stage filtration and purification enters a water collection barrel IV through an outlet IV, is discharged and utilized if the water body is qualified through detection, and flows back into a tail end section of the undercurrent structural unit II through a pumping return pipe IV if the water body is unqualified for re-filtration treatment until the water body discharged after purification is detected to be qualified, and then the sewage treatment is completed.
The beneficial effects of the invention are as follows:
1. compared with the prior art, the assembled vertical undercurrent structure consists of a plurality of undercurrent structural units, is prefabricated in advance, is transported to field hoisting, has high construction speed, saves energy in factory prefabrication production, is beneficial to environmental protection, and reduces noise and pollution in field construction;
2. compared with the prior art, the submerged flow structure unit is internally provided with the plurality of baffles to increase the submerged flow length, so that the pollutant treatment efficiency per unit area is improved, the submerged flow structure unit is connected into a whole through the lifting installation of the lug plates, the installation precision is high, and the structure is stable;
3. compared with the prior art, the water body subjected to the hierarchical purification of the assembled vertical undercurrent structure can be discharged after being detected to be qualified, and the purified impure water body can enter the assembled vertical undercurrent structure again through the pumping return pipe to be filtered and purified again, so that the water quality of the discharged water is ensured;
4. compared with the prior art, the assembled vertical subsurface flow structure is reasonable and compact in layout, occupies less space and improves the land utilization rate.
Drawings
FIG. 1 is a schematic layout of an assembled vertical subsurface flow structure of the present invention;
FIG. 2 is a schematic cross-sectional view of an assembled vertical subsurface flow structure of the present invention;
FIG. 3 is a schematic flow diagram of an assembled vertical subsurface flow structure of the present invention;
FIG. 4 is a schematic plan view of a first submerged flow architecture unit of the present invention;
FIG. 5 is a schematic cross-sectional view of a first submerged flow architecture unit of the present invention;
FIG. 6 is a schematic cross-sectional view of a second submerged flow architecture unit of the present invention;
FIG. 7 is a schematic cross-sectional view of a third submerged flow architecture unit of the present invention;
FIG. 8 is a schematic cross-sectional view of a bottom unit of the submerged flow architecture of the present invention;
fig. 9 is a flow chart of the construction process of the fabricated vertical subsurface flow structure of the invention.
Reference numerals illustrate: 1. a first undercurrent structural unit; 2. a undercurrent structural unit II; 3. a undercurrent structural unit III; 4. a undercurrent structure bottom unit; 5. a water inlet pipe; 6. a pumping return pipe II; 7. pumping return pipe IV; 8. a water collecting barrel II; 9. a water collecting barrel IV; 10. ear plates; 11. a pumping return pipe I; 12. a check valve; 13. pumping return pipe III; 14. a water collecting pipe; 15. a water collecting barrel I; 16. a water collecting barrel III; 17. a water inlet; 18. a straight partition plate; 19. an interface I; 20. an L-shaped partition; 21. an outlet I; 22. an outlet II; 23. an interface II; 24. an interface III; 25. an outlet III; 26. an outlet IV; 27. slag, slag and crushed stone mixed filler; 28. mixing zeolite and volcanic rock to obtain filler; 29. activated carbon filler; 30. foam filtering bead filler; 31. embedding bolts; 32. and embedding bolt hole grooves.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Example 1
As shown in fig. 1, the construction method of the assembled vertical subsurface flow structure comprises the following steps:
s00, prefabricating each undercurrent structural unit: the method comprises the steps of respectively prefabricating a first submerged structure unit 1, a second submerged structure unit 2, a third submerged structure unit 3 and a bottom unit 4 of the submerged structure, filling slag, slag and crushed stone mixed filler 27 in the first prefabricated submerged structure unit 1, reserving a water inlet 17 at the top, filling volcanic rock mixed filler 28 in the second submerged structure unit 2, reserving a first outlet 21 and a second outlet 22, filling activated carbon filler 29 in the third submerged structure unit 3, reserving a third outlet 25, filling foam filtering bead filler 30 in the bottom unit 4 of the submerged structure and reserving a fourth outlet 26;
in this step, the step of prefabricating the undercurrent structural unit 1 is:
separately prefabricating a top plate reserved with a water inlet 17, and reserving a pre-buried bolt hole groove 32;
when the bottom plate and the side plate are prefabricated, an interface I19 is reserved at one side of the bottom plate, and a pre-buried bolt 31 is arranged at the corresponding position of the top of the side plate;
overlapping and binding steel bars on the bottom plate and the side plates to form two straight partition plates 18;
filling the undercurrent structural unit I1 with slag, slag and crushed stone mixed filler 27;
fixing the top plate through the embedded bolts 31, and making the joint waterproof;
the ear plate 10 is bolted to the upper and lower outside of the side plate.
In this step, the step of prefabricating the undercurrent structural unit two 2 is:
separately prefabricating a top plate reserved with an interface I19, and reserving a pre-buried bolt hole groove 32;
an interface II 23 is reserved at one side of the bottom plate when the bottom plate and the side plate are prefabricated, an outlet I21 and an outlet II 22 are reserved at the bottom of the side plate, and a pre-buried bolt 31 is installed at the corresponding position of the top;
the bottom plate and the side plates are lapped and bound with reinforcing steel bars to be poured to form two L-shaped partition plates 20;
filling the mixed filler 28 of the zeolite and the volcanic with the component 1:1 with the undercurrent structural unit II 2;
fixing the top plate through the embedded bolts 31, and making the joint waterproof;
the ear plate 10 is bolted to the upper and lower outside of the side plate.
In this step, the prefabrication step of the undercurrent structural unit three 3 is:
the top plate reserved with the second interface 23 is prefabricated independently, an embedded bolt hole groove 32 is reserved, an interface III 24 is reserved on one side of the bottom plate when the bottom plate and the side plate are prefabricated, an outlet III 25 is reserved at the bottom of the side plate, and an embedded bolt 31 is installed at the corresponding position of the top;
overlapping and binding steel bars on the bottom plate and the side plates to form two straight partition plates 18;
filling the undercurrent structural unit III 3 with an activated carbon filler 29;
fixing the top plate through the embedded bolts 31, and making the joint waterproof;
the ear plate 10 is bolted to the upper and lower outside of the side plate.
In this step, the pre-fabrication step of the undercurrent structure bottom unit 4 is:
separately prefabricating a top plate reserved with an interface III 24, reserving a pre-buried bolt hole groove 32, reserving an outlet IV 26 at the upper part of a side plate when prefabricating a bottom plate and the side plate, and installing a pre-buried bolt 31 at the corresponding position of the top;
pouring lap-jointed and bound steel bars on the bottom plate and the side plates to form a straight partition plate 18 and an L-shaped partition plate 20;
then filling the bottom unit 4 of the undercurrent structure with foam filtering bead filler 30;
fixing the top plate through the embedded bolts 31, and making the joint waterproof;
the ear plate 10 is bolted to the upper part of the outer side of the side plate.
Like-numbered parts in the respective undercurrent structures described above do not refer to the same parts, but rather denote the same structures or the same parts.
In this embodiment, the undercurrent structural unit two 2, the undercurrent structural unit three 3 and the undercurrent structural bottom unit 4 are cubes.
S10, prefabricating each water collecting barrel: overlapping and prefabricating a first water collecting barrel 15, a third water collecting barrel 16, a second water collecting barrel 8 and a fourth water collecting barrel 9 respectively, reserving a water collecting pipe orifice at the upper part of each water collecting barrel, reserving a reflux pipe orifice at the lower part of each water collecting barrel, and internally installing a water quality detection device;
s20, hoisting each undercurrent structural unit: hoisting the bottom unit 4 of the submerged structure to a designated position, bolting a butt-joint steel plate on the bottom unit 4 of the submerged structure, then moving the third hoisting submerged structure unit 3 to the position above the bottom unit 4 of the submerged structure, carrying out quick and accurate landing and butt-joint fixation on the third hoisting submerged structure unit 3 and the butt-joint steel plate of the bottom unit 4 of the submerged structure, and sequentially completing hoisting of the second submerged structure unit 2 and the first submerged structure unit 1 based on the same operation to form a multi-stage submerged structure;
s30, correspondingly hoisting the prefabricated water collecting barrel I15, the water collecting barrel III 16, the water collecting barrel II 8 and the water collecting barrel IV 9 on two sides of the multi-stage undercurrent structure respectively;
s40, a water collecting pipe 14 is arranged between the first outlet 21 and the first water collecting barrel 15, between the second outlet 22 and the second water collecting barrel 8, between the third outlet 25 and the third water collecting barrel 16, and between the fourth outlet 26 and the fourth water collecting barrel 9;
s50, installing a water inlet pipeline 5 at a water inlet 17, installing a pumping return pipe I11 between a water collecting barrel I15 and the water inlet pipeline 5, installing a pumping return pipe II 6 between a water collecting barrel II 8 and the water inlet pipeline 5, installing a pumping return pipe III 13 between a water collecting barrel III 16 and a submerged flow structural unit II 2, and installing a pumping return pipe IV 7 between a water collecting barrel IV 9 and the submerged flow structural unit II 2, thereby completing the construction of the assembled vertical submerged flow structure.
Example 2
As shown in fig. 1-3, the fabricated vertical undercurrent structure is constructed by using the fabricated vertical undercurrent structure construction method of embodiment 1, and the fabricated vertical undercurrent structure is a multistage undercurrent structure formed by sequentially stacking an undercurrent structural unit 1, an undercurrent structural unit 2, an undercurrent structural unit 3 and an undercurrent structural unit 4 in series. The water inlet pipeline 5 is communicated with the water inlet 17 of the first submerged structure unit 1, the water collecting barrel II 8 and the water collecting barrel IV 9 are overlapped and arranged on one side of the multi-stage submerged structure, the water collecting barrel I15 and the water collecting barrel III 16 are overlapped and arranged on the other side of the multi-stage submerged structure, the pumping return pipe I11 is communicated with the lower part of the water collecting barrel I15 and the water inlet pipeline 5, the pumping return pipe II 6 is communicated with the lower part of the water collecting barrel II 8 and the upper part of the water inlet pipeline 5, the pumping return pipe III 13 is communicated with the lower part of the water collecting barrel III 16 and the upper part of the submerged structure unit II 2, the pumping return pipe IV 7 is communicated with the lower part of the water collecting barrel IV 9 and the upper part of the submerged structure unit II 2, the check valve 12 is arranged between the upper part of the water collecting barrel I15 and the lower part of the submerged structure unit II 2, between the upper part of the water collecting barrel III 16 and the lower part of the submerged structure unit III 3, and between the upper part of the water collecting barrel II 8 and the submerged structure unit II 2, and the upper part of the submerged structure 4 are respectively provided with water collecting pipes 14, and respectively, and the fillers are respectively arranged in each submerged structure unit.
Specifically, as shown in fig. 4-5, the first submerged structure unit 1 is a cube, the upper and lower parts of the first submerged structure unit 1 are respectively provided with an ear plate 10, one side of a top plate is provided with a water inlet 17 and a straight partition plate 18, one side of a bottom plate is provided with a straight partition plate 18 and a first connector 19 which are connected, the top of the side plate is provided with an embedded bolt hole groove 32, the periphery of the top plate is provided with an embedded bolt hole groove 32, and the embedded bolt hole groove is fixed at the top of the side plate through an embedded bolt 31.
Specifically, as shown in fig. 6, the upper and lower parts of the undercurrent structural unit two 2 are also provided with ear plates 10, one side of the top plate is provided with a first connector 19 and a connected L-shaped partition plate 20, one side of the bottom plate is provided with a second connector 23 and a connected L-shaped partition plate 20, the bottom of the side plate adjacent to the second connector 23 is provided with a second outlet 22, the bottom of the side plate at the other side is provided with a first outlet 21, the top of the side plate is also provided with an embedded bolt hole groove 32, the periphery of the top plate is also provided with an embedded bolt hole groove 32, and the top plate is also fixed at the top of the side plate through an embedded bolt 31.
Specifically, as shown in fig. 7, the upper and lower parts of the undercurrent structural unit three 3 are also provided with ear plates 10, one side of the top plate is provided with an interface two 23 and a straight partition plate 18, one side of the bottom plate is provided with a straight partition plate 18 and an interface three 24 which are connected, the bottom of the side plate adjacent to the interface three 24 is provided with an outlet three 25, the top of the side plate is also provided with an embedded bolt hole groove 32, the periphery of the top plate is also provided with an embedded bolt hole groove 32, and the side plate is also fixed at the top of the side plate through an embedded bolt 31.
Specifically, as shown in fig. 8, the upper part of the bottom unit 4 of the undercurrent structure is also provided with an ear plate 10, one side of the top plate is provided with a third interface 24 and an L-shaped partition plate 20, the side plate far away from the third interface 24 is provided with a fourth outlet 26 and a connected straight partition plate 18, the top of the side plate is also provided with an embedded bolt hole groove 32, the periphery of the top plate is also provided with an embedded bolt hole groove 32, and the top plate is also fixed at the top of the side plate through an embedded bolt 31.
Preferably, each interface and outlet of adjacent undercurrent structural units are provided with a filter grid, and each interface is provided with a water stop rubber ring.
Preferably, the various fillers include slag, slag and crushed stone mixed filler 27, zeolite and volcanic rock mixed filler 28, activated carbon filler 29 and foam bead filter filler 30, which can be appropriately adjusted according to sewage pollutants.
Claims (9)
1. The construction method of the assembled vertical subsurface flow structure is characterized by comprising the following steps of:
s00, prefabricating each undercurrent structural unit: respectively prefabricating a first submerged structure unit (1), a second submerged structure unit (2), a third submerged structure unit (3) and a bottom submerged structure unit (4), wherein slag, slag and crushed stone mixed filler (27) are filled in the first submerged structure unit (1) and a water inlet (17) is reserved at the top, volcanic rock mixed filler (28) is filled in the second submerged structure unit (2) and an outlet I (21) and an outlet II (22) are reserved, activated carbon filler (29) is filled in the third submerged structure unit (3) and an outlet III (25) is reserved, and foam bead filter filler (30) and an outlet IV (26) are filled in the bottom submerged structure unit (4); each interface and each outlet of the adjacent undercurrent structural units are provided with a filtering grid, and each interface is provided with a water stop rubber ring; straight partition plates (18) are arranged in the first undercurrent structural unit (1) and the third undercurrent structural unit (3); an L-shaped partition board (20) is arranged in the undercurrent structure unit II (2) and the undercurrent structure bottom unit (4); earplates (10) are arranged in the first undercurrent structural unit (1), the second undercurrent structural unit (2), the third undercurrent structural unit (3) and the bottom undercurrent structural unit (4);
s10, prefabricating each water collecting barrel: respectively overlapping and prefabricating a first water collecting barrel (15), a third water collecting barrel (16), a second water collecting barrel (8) and a fourth water collecting barrel (9), reserving a water collecting pipe orifice at the upper part of each water collecting barrel, reserving a reflux pipe orifice at the lower part of each water collecting barrel, and internally installing a water quality detection device;
s20, hoisting each undercurrent structural unit: hoisting the bottom unit (4) of the submerged structure to a designated position, bolting a butt-joint steel plate on the bottom unit (4) of the submerged structure, then hoisting the third (3) of the submerged structure to move above the bottom unit (4) of the submerged structure, carrying out quick and accurate landing and butt-joint fixation on the butt-joint steel plate of the third (3) of the submerged structure and the bottom unit (4) of the submerged structure, and sequentially completing hoisting of the second (2) and the first (1) of the submerged structure based on the same operation to form a multi-stage submerged structure;
s30, correspondingly hoisting the prefabricated water collection barrel I (15), the water collection barrel III (16), the water collection barrel II (8) and the water collection barrel IV (9) to two sides of the multi-stage submerged structure respectively;
s40, a water collecting pipe (14) is arranged between the first outlet (21) and the first water collecting barrel (15), the second outlet (22) and the second water collecting barrel (8), the third outlet (25) and the third water collecting barrel (16), and the fourth outlet (26) and the fourth water collecting barrel (9) respectively;
s50, installing a water inlet pipeline (5) at the water inlet (17), then installing a pumping return pipe I (11) between the water collecting barrel I (15) and the water inlet pipeline (5), installing a pumping return pipe II (6) between the water collecting barrel II (8) and the water inlet pipeline (5), installing a pumping return pipe III (13) between the water collecting barrel III (16) and the submerged structure unit II (2), and installing a pumping return pipe IV (7) between the water collecting barrel IV (9) and the submerged structure unit II (2), so as to finish construction of the assembled vertical submerged structure.
2. The method of constructing a fabricated vertical subsurface structure according to claim 1, wherein in step S00, the step of prefabricating the first subsurface structure unit (1) is as follows:
the top plate reserved with the water inlet (17) is prefabricated independently, and a pre-buried bolt hole groove (32) is reserved;
an interface I (19) is reserved at one side of the bottom plate when the bottom plate and the side plate are prefabricated, and a pre-buried bolt (31) is arranged at the corresponding position of the top of the side plate;
the bottom plate and the side plates are lapped and bound with reinforcing steel bars to be poured to form two straight partition plates (18);
filling the undercurrent structural unit I (1) with a mixed filler (27) of slag, slag and crushed stone;
fixing the top plate through a pre-buried bolt (31), and making the joint waterproof;
the upper and lower parts outside the side plates are bolted with the mounting ear plates (10).
3. The construction method of the assembled vertical undercurrent structure according to claim 2, wherein the undercurrent structure unit 1 is a cube, the upper and lower parts of the undercurrent structure unit 1 are respectively provided with an ear plate 10, one side of a top plate is provided with a water inlet 17 and a straight partition 18, one side of the bottom plate is provided with the straight partition 18 and an interface 19 which are connected, the top of the side plate is provided with an embedded bolt hole groove 32, the periphery of the top plate is provided with the embedded bolt hole groove 32, and the undercurrent structure unit 1 is fixed at the top of the side plate through the embedded bolt 31.
4. The method for constructing an assembled vertical undercurrent structure according to claim 3, wherein the undercurrent structural unit II (2), the undercurrent structural unit III (3) and the undercurrent structural unit (4) are cubes.
5. The construction method of the assembled vertical undercurrent structure according to claim 4, wherein the upper and lower parts of the undercurrent structural unit II (2) are also provided with ear plates (10), one side of the top plate is provided with an interface I (19) and a connected L-shaped partition plate (20), one side of the bottom plate is provided with an interface II (23) and a connected L-shaped partition plate (20), the bottom of the side plate adjacent to the interface II (23) is provided with an outlet II (22), the bottom of the side plate on the other side is provided with an outlet I (21), the top of the side plate is also provided with an embedded bolt hole groove (32), and the periphery of the top plate is also provided with an embedded bolt hole groove (32) and is also fixed at the top of the side plate through an embedded bolt (31).
6. The construction method of the assembled vertical undercurrent structure according to claim 4, wherein the upper and lower parts of the undercurrent structure unit III (3) are respectively provided with an ear plate (10), one side of the top plate is provided with a second interface (23) and a third interface (24), one side of the bottom plate is provided with the second interface (18) and the third interface (24) which are connected, the bottom of the side plate adjacent to the third interface (24) is provided with a third outlet (25), the top of the side plate is also provided with an embedded bolt hole groove (32), the periphery of the top plate is also provided with an embedded bolt hole groove (32), and the top plate is also fixed at the top of the side plate through an embedded bolt (31).
7. The construction method of the assembled vertical undercurrent structure according to claim 4, wherein the upper part of the undercurrent structure bottom unit (4) is also provided with an ear plate (10), one side of the top plate is provided with a third interface (24) and an L-shaped partition plate (20), a side plate far away from the third interface (24) is provided with a fourth outlet (26) and a straight partition plate (18) connected with the third interface, the top of the side plate is also provided with an embedded bolt hole groove (32), the periphery of the top plate is also provided with an embedded bolt hole groove (32), and the top plate is also fixed at the top of the side plate through an embedded bolt (31).
8. The assembled vertical undercurrent structure is characterized in that the assembled vertical undercurrent structure is manufactured by the construction method of any one of claims 1-7.
9. A method for treating sewage based on an assembled vertical undercurrent structure, characterized in that, based on the assembled vertical undercurrent structure according to claim 8, the method comprises the following steps:
sewage enters the first submerged flow structural unit (1) through the water inlet (17) to be subjected to first-stage filtration treatment, and enters the second submerged flow structural unit (2) through the first interface (19) to be subjected to second-stage treatment;
after entering the first-stage filtering and purifying water body into the first submerged flow structural unit (2), one part enters the first submerged flow structural unit (1) through the first outlet (21), the other part enters the second submerged flow structural unit (2) for second-stage filtering and purifying, the water in the first submerged flow structural unit (15) is discharged and utilized if the water is detected to be qualified, and if the water is unqualified, the water flows back to the water inlet pipeline (5) through the first pumping return pipe (11) and enters the first submerged flow structural unit (1) for re-filtering treatment;
one part of water body which is subjected to secondary filtration and purification by the undercurrent structural unit II (2) enters the undercurrent structural unit III (3) through the outlet II (22) for third-stage filtration and purification, and water in the undercurrent structural unit II (8) is discharged and utilized if the water is detected to be qualified, and if the water is unqualified, the water flows back to the water inlet pipeline (5) through the pumping return pipe II (6) and enters the undercurrent structural unit I (1) for re-filtration treatment;
after entering the undercurrent structural unit III (3), one part of the water body subjected to the second-stage filtration purification enters the water collection barrel III (16) through the outlet III (25), the other part enters the undercurrent structural bottom unit (4) through the third-stage filtration purification to carry out the fourth-stage filtration purification, the water in the water collection barrel III (16) is discharged and utilized after being detected to be qualified, and if the water is unqualified, the water flows back to the initial section entering the undercurrent structural unit II (2) through the pumping return pipe III (13) to carry out the re-filtration treatment;
and the water body subjected to fourth-stage filtration and purification enters a water collection barrel IV (9) through an outlet IV (26), is discharged and utilized if the water body is qualified through detection, and flows back into the tail end section of a submerged flow structural unit II (2) through a pumping return pipe IV (7) if the water body is unqualified, and is subjected to re-filtration treatment until the water body discharged after purification is detected to be qualified, so that sewage treatment is completed.
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| DE202011052232U1 (en) * | 2011-07-19 | 2012-01-26 | Frank Hildebrand | Wastewater treatment plant with a root chamber clarification area |
| CN104692533A (en) * | 2015-01-27 | 2015-06-10 | 中国林业科学研究院林业新技术研究所 | Cage drawer type vertical subsurface flow constructed wetland simulator and wetland simulation method |
| CN109467283B (en) * | 2018-12-25 | 2020-09-08 | 湖南智水环境工程有限公司 | Sewage treatment equipment suitable for multi-household domestic sewage treatment |
| CN110642481B (en) * | 2019-11-04 | 2022-04-19 | 重庆交通大学 | Domestic sewage integrated treatment system suitable for villages and treatment method thereof |
| CN111333271B (en) * | 2020-03-17 | 2022-08-05 | 爱土工程环境科技有限公司 | Sewage treatment system, application thereof and sewage treatment method |
| CN215049058U (en) * | 2020-10-27 | 2021-12-07 | 湖北省水利水电科学研究院 | Composite artificial wetland system for treating rural sewage |
| CN113003728A (en) * | 2021-02-07 | 2021-06-22 | 中国恩菲工程技术有限公司 | Combined controllable efficient purification constructed wetland system |
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