CN112811745A - Improvement method of novel construction technology of water treatment plant - Google Patents
Improvement method of novel construction technology of water treatment plant Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 151
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005516 engineering process Methods 0.000 title claims abstract description 29
- 230000006872 improvement Effects 0.000 title claims abstract description 22
- 238000004062 sedimentation Methods 0.000 claims abstract description 13
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 238000011001 backwashing Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims abstract description 9
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims description 68
- 238000009434 installation Methods 0.000 claims description 23
- 239000002689 soil Substances 0.000 claims description 23
- 239000011150 reinforced concrete Substances 0.000 claims description 20
- 238000012423 maintenance Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 238000009415 formwork Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000005034 decoration Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005536 corrosion prevention Methods 0.000 claims description 3
- 239000002674 ointment Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F7/00—Aeration of stretches of water
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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 discloses an improvement method of a novel construction technology of a water treatment plant, relating to the technical field of engineering construction and comprising the following steps: s1, determining the construction scheme of the coarse grid and the water inlet pump room; s2, determining the construction schemes of the fine grid, the aeration grit chamber and the AAO biological tank; s3, determining a construction scheme of the rectangular secondary sedimentation tank; s4, determining the construction scheme of the high-efficiency fiber filter and the backwashing pump room; and S5, determining the construction scheme of the ultraviolet disinfection tank. This novel water treatment plant construction technology's improvement method through improving current construction technology, to the difficult point in the current work progress, has given multiple improvement method for the construction problems such as pond, infiltration can not appear floating in the engineering when the construction, simultaneously reasonable arrangement construction operation, and select experienced operating personnel to carry out the operation to the scene that the geological conditions is complicated meticulously.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to an improvement method of a novel construction technology of a water treatment plant.
Background
At present, the urbanization construction of China enters the maturity period through the urbanization acceleration period, the urban scale is continuously enlarged, most of the existing urban sewage treatment systems are overloaded and cannot meet the increasing sewage treatment requirements, and the treatment mode comprises newly building a sewage treatment plant or modifying and expanding.
When the water treatment plant is constructed, because the plane positions among all structures of the water treatment plant are compact, the construction space is narrow, the structures of the buildings are adjacent and close, and because of the particularity of the water treatment plant, the water treatment plant has particularly high requirements on seepage resistance, corrosion resistance and the like during construction. The existing construction technology often has the problems of water seepage, pool floating and other technical construction, and is difficult to organize and coordinate on site and difficult to manage.
Therefore, a new method for improving the construction technology of the water treatment plant is proposed to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel method for improving the construction technology of a water treatment plant, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an improvement method of a novel construction technology of a water treatment plant comprises the following steps:
s1, determining a construction scheme of a coarse grating and a water inlet pump house, wherein the coarse grating and the water inlet pump house are constructed in a reinforced concrete open caisson structure, the open caisson sinks in a non-drainage sinking mode, and the specific construction sequence is high-pressure grouting water stop wall construction → open caisson foundation pit excavation → sand cushion layer laying, and meanwhile, installing sleepers → manufacturing blades → manufacturing the open caisson → dismantling the sleepers, sinking the excavated soil to the designed depth → closing the open caisson → pouring a reinforced concrete bottom plate → partition wall and cylinder wall construction are carried out;
s2, determining a construction scheme of a fine grid, an aeration grit chamber and an AAO biological tank, wherein the fine grid is a reinforced concrete water tank, the concrete strength grade is C30, the impermeability grade is S6, the foundation treatment adopts a drainage consolidation method, one deformation joint is arranged in the middle of the aeration grit chamber, one expansion joint is transversely arranged in the middle of the AAO biological tank, and four expansion joints are arranged in the longitudinal middle of the AAO biological tank;
s3, determining a construction scheme of a rectangular secondary sedimentation tank, adopting C30S6 concrete, and respectively arranging two expansion joints in the longitudinal direction and the transverse direction of each group of secondary sedimentation tanks, wherein the concrete construction sequence is field flattening → foundation treatment → positioning and paying-off → earthwork digging and filling → cushion layer → bottom plate elastic line → bottom plate vertical side mold → bottom plate tie bar → bottom plate concrete maintenance → pool wall, tie bar, sleeve installation → pool wall template → pavement bottom plate template → pool wall concrete pouring → pavement plate tie bar → pavement plate concrete pouring → concrete maintenance → template → water tightness test → anticorrosion, decoration, backfilling and installation engineering;
s4, determining a construction scheme of the high-efficiency fiber filter chamber and the backwashing pump house, wherein the high-efficiency fiber filter chamber and the backwashing pump house are of reinforced concrete tank body structures, adopt a material with a concrete strength grade of C25 and an impermeability grade of S6, and carry out flow construction according to two expansion joints between 4-5 shafts and 7-8 shafts according to 3 construction intervals;
and S5, determining a construction scheme of the ultraviolet disinfection tank, wherein the ultraviolet disinfection tank is of a reinforced concrete tank body structure, is made of a material with the concrete strength grade of C25 and the impermeability grade of S6, and is constructed according to the engineering construction process of a common structure.
Further optimizing the technical scheme, the specific construction sequence in S2 is site leveling → foundation treatment → positioning and paying-off → blind ditch → cushion layer → bottom plate spring line → bottom plate vertical side mold → bottom plate tie-bar → bottom plate concrete maintenance → wallboard, guide wall tie-bar, sleeve installation → wallboard template → walkway bottom mold → walkway root tie-bar → pool wall, walkway plate concrete pouring → concrete maintenance to pool wall template demolition → railing, walkway plate installation to bottom plate pool wall deformation sealant caulking → water testing → anticorrosion, decoration, installation engineering → backfill soil.
The technical scheme is further optimized, the construction steps have higher requirements on impermeability, corrosion resistance and durability of the concrete, the raw material selection, the mix proportion design, the processing, the transportation, the pouring and the maintenance of the structural concrete can be enhanced, meanwhile, a plurality of deformation joints, a reinforcing strip and a post-pouring strip are arranged in the biological pond and the secondary sedimentation pond, the construction treatment of the deformation joints, the reinforcing strip and the post-pouring strip is a weak link of the construction of the impermeable concrete, the support of the formwork, the embedment of the water stop strip, the pouring and the tamping of the concrete, the construction of sealing factice of the deformation joints and the careful construction of the post-pouring strip concrete are carried out.
The technical scheme is further optimized, the construction steps need to avoid anti-floating treatment of the pool, the pool body is backfilled compactly according to the standard requirements when being backfilled, the friction coefficient between the pool body and a soil body is increased, the height and displacement observation times of the pool body are increased when the pool body is backfilled in rainy and flood weather, and if abnormal phenomena are found, measures such as weighting the pool body are adopted to offset partial buoyancy or other effective measures.
Further optimizing the technical scheme, the construction steps need to improve the foundation, and as part of the foundation section may be located in a soft soil layer such as silt and the like and the thickness of the soft soil layer is larger, a replacement filling method is planned to be adopted for foundation treatment on the soft foundation section which may appear, the replacement filling method is to dig off the part of the soil body, and then graded sand pebbles or other approved materials are used for backfilling to the elevation of the foundation so as to improve the bearing capacity of the foundation.
The technical scheme is further optimized, the sinking construction technology of the open caisson without drainage at the lower part of the coarse grating and the water inlet pump house in the construction step has high requirement, the geological condition is complex, workers with open caisson construction experience need to be assigned, and the workers are guided by the expert on site.
Compared with the prior art, the invention provides an improvement method of a novel construction technology of a water treatment plant, which has the following beneficial effects:
this novel water treatment plant construction technology's improvement method through improving current construction technology, to the difficult point in the current work progress, has given multiple improvement method for the construction problems such as pond, infiltration can not appear floating in the engineering when the construction, simultaneously reasonable arrangement construction operation, and select experienced operating personnel to carry out the operation to the scene that the geological conditions is complicated meticulously.
Drawings
Fig. 1 is a schematic flow chart of an improved method of a novel construction technology of a water treatment plant according to the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, a method for improving a novel construction technology of a water treatment plant includes the following steps:
s1, determining a construction scheme of a coarse grating and a water inlet pump house, wherein the coarse grating and the water inlet pump house are constructed in a reinforced concrete open caisson structure, the open caisson sinks in a non-drainage sinking mode, and the specific construction sequence is high-pressure grouting water stop wall construction → open caisson foundation pit excavation → sand cushion layer laying, and meanwhile, installing sleepers → manufacturing blades → manufacturing the open caisson → dismantling the sleepers, sinking the excavated soil to the designed depth → closing the open caisson → pouring a reinforced concrete bottom plate → partition wall and cylinder wall construction are carried out;
s2, determining a construction scheme of a fine grid, an aeration grit chamber and an AAO biological tank, wherein the fine grid is a reinforced concrete water tank, the concrete strength grade is C30, the impermeability grade is S6, the foundation treatment adopts a drainage consolidation method, one deformation joint is arranged in the middle of the aeration grit chamber, one expansion joint is transversely arranged in the middle of the AAO biological tank, and four expansion joints are arranged in the longitudinal middle of the AAO biological tank;
s3, determining a construction scheme of a rectangular secondary sedimentation tank, adopting C30S6 concrete, and respectively arranging two expansion joints in the longitudinal direction and the transverse direction of each group of secondary sedimentation tanks, wherein the concrete construction sequence is field flattening → foundation treatment → positioning and paying-off → earthwork digging and filling → cushion layer → bottom plate elastic line → bottom plate vertical side mold → bottom plate tie bar → bottom plate concrete maintenance → pool wall, tie bar, sleeve installation → pool wall template → pavement bottom plate template → pool wall concrete pouring → pavement plate tie bar → pavement plate concrete pouring → concrete maintenance → template → water tightness test → anticorrosion, decoration, backfilling and installation engineering;
s4, determining a construction scheme of the high-efficiency fiber filter chamber and the backwashing pump house, wherein the high-efficiency fiber filter chamber and the backwashing pump house are of reinforced concrete tank body structures, adopt a material with a concrete strength grade of C25 and an impermeability grade of S6, and carry out flow construction according to two expansion joints between 4-5 shafts and 7-8 shafts according to 3 construction intervals;
and S5, determining a construction scheme of the ultraviolet disinfection tank, wherein the ultraviolet disinfection tank is of a reinforced concrete tank body structure, is made of a material with the concrete strength grade of C25 and the impermeability grade of S6, and is constructed according to the engineering construction process of a common structure.
As an embodiment of this embodiment, the specific construction sequence in S2 is site leveling → foundation treatment → positioning and paying-off → blind ditch → cushion → floor spring line → floor vertical side mold → floor tie-bar → floor concrete curing → wall panel, guide wall tie-bar, sleeve installation → wall panel formwork → walkway bottom mold → walkway root tie-bar → pool wall, walkway plate concrete pouring → concrete curing to pool wall formwork removal → railing, walkway plate installation to floor pool wall deformation sealant caulking → test water → corrosion prevention, decoration, installation engineering → backfill.
As an implementation scheme of this embodiment, the construction steps have high requirements on impermeability, corrosion resistance and durability of concrete, and can enhance the selection of raw materials, mix proportion design, processing, transportation, pouring and maintenance of structural concrete, meanwhile, a plurality of deformation joints, reinforcing strips, post-pouring strips, deformation joints, reinforcing strips and post-pouring strips are arranged in the biological tank and the secondary sedimentation tank, the construction treatment of the deformation joints, the reinforcing strips and the post-pouring strips is a weak link of the impermeable concrete construction, the support of the formwork, the embedment of water stops, the pouring and tamping of concrete, the construction of sealing ointment for the deformation joints, and the elaborate construction of the post-pouring strip concrete.
As an embodiment of this embodiment, the construction step needs to avoid anti-floating treatment of the pool, when the pool body is backfilled, the pool body is backfilled compactly according to the standard requirements, the friction coefficient between the pool body and the soil body is increased, after backfilling, the height and displacement observation times of the pool body are increased in rainy and flood weather, and if an abnormal phenomenon is found, measures such as weighting the pool body are taken to counteract partial buoyancy or other effective measures.
As an embodiment of this embodiment, the construction step requires an improvement treatment of the foundation, and since part of the foundation may be located in a soft soil layer such as silt and the like and the soft soil layer has a large thickness, a replacement filling method is proposed for the soft foundation section which may occur, the replacement filling method is to dig out the part of the soil, and then graded sand gravel or other approved materials are used to backfill to the foundation elevation so as to improve the bearing capacity of the foundation.
As an implementation scheme of this embodiment, in the construction step, the sinking construction technology of the open caisson with the coarse grating and the lower part of the water intake pump house without draining is high in requirement, the geological condition is complex, and workers with open caisson construction experience need to be assigned and are guided by the expert on site.
Example two:
an improvement method of a novel construction technology of a water treatment plant comprises the following steps:
s1, determining a construction scheme of a coarse grating and a water inlet pump house, wherein the coarse grating and the water inlet pump house are constructed in a reinforced concrete open caisson structure, the open caisson sinks in a non-drainage sinking mode, and the specific construction sequence is high-pressure grouting water stop wall construction → open caisson foundation pit excavation → sand cushion layer laying, and meanwhile, installing sleepers → manufacturing blades → manufacturing the open caisson → dismantling the sleepers, sinking the excavated soil to the designed depth → closing the open caisson → pouring a reinforced concrete bottom plate → partition wall and cylinder wall construction are carried out;
s2, determining a construction scheme of a fine grid, an aeration grit chamber and an AAO biological tank, wherein the fine grid is a reinforced concrete water tank, the concrete strength grade is C30, the impermeability grade is S6, the foundation treatment adopts a drainage consolidation method, one deformation joint is arranged in the middle of the aeration grit chamber, one expansion joint is transversely arranged in the middle of the AAO biological tank, and four expansion joints are arranged in the longitudinal middle of the AAO biological tank;
s3, determining a construction scheme of a rectangular secondary sedimentation tank, adopting C30S6 concrete, and respectively arranging two expansion joints in the longitudinal direction and the transverse direction of each group of secondary sedimentation tanks, wherein the concrete construction sequence is field flattening → foundation treatment → positioning and paying-off → earthwork digging and filling → cushion layer → bottom plate elastic line → bottom plate vertical side mold → bottom plate tie bar → bottom plate concrete maintenance → pool wall, tie bar, sleeve installation → pool wall template → pavement bottom plate template → pool wall concrete pouring → pavement plate tie bar → pavement plate concrete pouring → concrete maintenance → template → water tightness test → anticorrosion, decoration, backfilling and installation engineering;
s4, determining a construction scheme of the high-efficiency fiber filter chamber and the backwashing pump house, wherein the high-efficiency fiber filter chamber and the backwashing pump house are of reinforced concrete tank body structures, adopt a material with a concrete strength grade of C25 and an impermeability grade of S6, and carry out flow construction according to two expansion joints between 4-5 shafts and 7-8 shafts according to 3 construction intervals;
and S5, determining a construction scheme of the ultraviolet disinfection tank, wherein the ultraviolet disinfection tank is of a reinforced concrete tank body structure, is made of a material with the concrete strength grade of C25 and the impermeability grade of S6, and is constructed according to the engineering construction process of a common structure.
As an embodiment of this embodiment, the specific construction sequence in S2 is site leveling → foundation treatment → positioning and paying-off → blind ditch → cushion → floor spring line → floor vertical side mold → floor tie-bar → floor concrete curing → wall panel, guide wall tie-bar, sleeve installation → wall panel formwork → walkway bottom mold → walkway root tie-bar → pool wall, walkway plate concrete pouring → concrete curing to pool wall formwork removal → railing, walkway plate installation to floor pool wall deformation sealant caulking → test water → corrosion prevention, decoration, installation engineering → backfill.
As an implementation scheme of this embodiment, the construction steps have high requirements on impermeability, corrosion resistance and durability of concrete, and can enhance the selection of raw materials, mix proportion design, processing, transportation, pouring and maintenance of structural concrete, meanwhile, a plurality of deformation joints, reinforcing strips, post-pouring strips, deformation joints, reinforcing strips and post-pouring strips are arranged in the biological tank and the secondary sedimentation tank, the construction treatment of the deformation joints, the reinforcing strips and the post-pouring strips is a weak link of the impermeable concrete construction, the support of the formwork, the embedment of water stops, the pouring and tamping of concrete, the construction of sealing ointment for the deformation joints, and the elaborate construction of the post-pouring strip concrete.
As an embodiment of this embodiment, the construction step needs to avoid anti-floating treatment of the pool, when the pool body is backfilled, the pool body is backfilled compactly according to the standard requirements, the friction coefficient between the pool body and the soil body is increased, after backfilling, the height and displacement observation times of the pool body are increased in rainy and flood weather, and if an abnormal phenomenon is found, measures such as weighting the pool body are taken to counteract partial buoyancy or other effective measures. And emergency measures can be taken to avoid the phenomena of pool floating and the like. The well points are all started, the inspection and maintenance of the well points, the generator and the like are enhanced, the smooth running of precipitation is ensured, water is added into oil, and the weight of the ground body is increased. When the pond body installation stage or need the unloading maintenance, draw water simultaneously and pay attention to observing the water level change in the pumping well, when the stable water level in the observation well is less than pond body bottom plate top surface elevation +/-0.000 meters back, just can empty the maintenance to the pond body, otherwise the emptying is forbidden strictly.
As an embodiment of this embodiment, the construction step requires an improvement treatment of the foundation, and since part of the foundation may be located in a soft soil layer such as silt and the like and the soft soil layer has a large thickness, a replacement filling method is proposed for the soft foundation section which may occur, the replacement filling method is to dig out the part of the soil, and then graded sand gravel or other approved materials are used to backfill to the foundation elevation so as to improve the bearing capacity of the foundation.
As an implementation scheme of this embodiment, in the construction step, the sinking construction technology of the open caisson with the coarse grating and the lower part of the water intake pump house without draining is high in requirement, the geological condition is complex, and workers with open caisson construction experience need to be assigned and are guided by the expert on site.
As an implementation scheme of this embodiment, in the construction step, a plurality of construction projects are performed, and the construction period is during engineering construction; the method has multiple professions and multiple kinds of cross operation, such as foundation, upper building, pipeline installation, equipment installation engineering construction and the like. Many interpenetration operations are performed in each specialty, the pre-embedding is large in the civil engineering construction stage, the coordination of field organization is difficult, and the construction management difficulty is large. Therefore, the responsibility of the head office bag needs to be fulfilled seriously, and the management, coordination and coordination work of each construction team are fully responsible; before each construction team enters the field, an agreement is signed with the construction team, and management modes, engineering techniques, quality, plans, materials, safety, civilized construction, engineering payment and other management procedures are determined in the agreement; defining rights and responsibilities; providing measurement points, vertical transportation equipment, scaffolds, temporary office rooms, electric power, water sources and other temporary facilities for each construction team, and creating good conditions for construction; providing construction drawings, business negotiation and other conditions in time, and solving the reasonable requirements put forward by each construction team in time; the building block creates working faces for each construction team; balancing and coordinating construction date, progress and sequence; the daily management is strengthened, a negotiation conference system is established, the engineering quality, progress and safety civilization are comprehensively controlled, and all construction targets of the engineering are comprehensively realized.
The invention has the beneficial effects that: this novel water treatment plant construction technology's improvement method through improving current construction technology, to the difficult point in the current work progress, has given multiple improvement method for the construction problems such as pond, infiltration can not appear floating in the engineering when the construction, simultaneously reasonable arrangement construction operation, and select experienced operating personnel to carry out the operation to the scene that the geological conditions is complicated meticulously.
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 (6)
1. The improvement method of the novel construction technology of the water treatment plant is characterized by comprising the following steps:
s1, determining a construction scheme of a coarse grating and a water inlet pump house, wherein the coarse grating and the water inlet pump house are constructed in a reinforced concrete open caisson structure, the open caisson sinks in a non-drainage sinking mode, and the specific construction sequence is high-pressure grouting water stop wall construction → open caisson foundation pit excavation → sand cushion layer laying, and meanwhile, installing sleepers → manufacturing blades → manufacturing the open caisson → dismantling the sleepers, sinking the excavated soil to the designed depth → closing the open caisson → pouring a reinforced concrete bottom plate → partition wall and cylinder wall construction are carried out;
s2, determining a construction scheme of a fine grid, an aeration grit chamber and an AAO biological tank, wherein the fine grid is a reinforced concrete water tank, the concrete strength grade is C30, the impermeability grade is S6, the foundation treatment adopts a drainage consolidation method, one deformation joint is arranged in the middle of the aeration grit chamber, one expansion joint is transversely arranged in the middle of the AAO biological tank, and four expansion joints are arranged in the longitudinal middle of the AAO biological tank;
s3, determining a construction scheme of a rectangular secondary sedimentation tank, adopting C30S6 concrete, and respectively arranging two expansion joints in the longitudinal direction and the transverse direction of each group of secondary sedimentation tanks, wherein the concrete construction sequence is field flattening → foundation treatment → positioning and paying-off → earthwork digging and filling → cushion layer → bottom plate elastic line → bottom plate vertical side mold → bottom plate tie bar → bottom plate concrete maintenance → pool wall, tie bar, sleeve installation → pool wall template → pavement bottom plate template → pool wall concrete pouring → pavement plate tie bar → pavement plate concrete pouring → concrete maintenance → template → water tightness test → anticorrosion, decoration, backfilling and installation engineering;
s4, determining a construction scheme of the high-efficiency fiber filter chamber and the backwashing pump house, wherein the high-efficiency fiber filter chamber and the backwashing pump house are of reinforced concrete tank body structures, adopt a material with a concrete strength grade of C25 and an impermeability grade of S6, and carry out flow construction according to two expansion joints between 4-5 shafts and 7-8 shafts according to 3 construction intervals;
and S5, determining a construction scheme of the ultraviolet disinfection tank, wherein the ultraviolet disinfection tank is of a reinforced concrete tank body structure, is made of a material with the concrete strength grade of C25 and the impermeability grade of S6, and is constructed according to the engineering construction process of a common structure.
2. The improvement method of the construction technology of the novel water treatment plant according to claim 1, wherein the specific construction sequence in S2 is site leveling → foundation treatment → positioning and paying-off → blind drain → bed course → floor spring line → floor vertical side mould → floor tie bar → floor concrete curing → wall panel, guide wall tie bar, sleeve installation → wall panel formwork → walkway bottom mould → walkway root tie bar → pool wall, walkway plate pouring concrete → concrete curing to pool wall formwork removal → rail, walkway plate installation to floor pool wall deformation sealant caulking → test water → corrosion prevention, decoration, installation work → backfill soil.
3. The improvement method of the construction technology of the novel water treatment plant according to claim 1, characterized in that the construction steps have higher requirements on impermeability, corrosion resistance and durability of concrete, can enhance the raw material selection, mix proportion design, processing, transportation, pouring and maintenance of the structural concrete, meanwhile, a plurality of deformation joints are arranged in the biological tank and the secondary sedimentation tank, the reinforcing belt and the post-pouring belt are weak links of the construction of the impermeable concrete, the support of the template, the embedment of the water stop belt, the pouring of the concrete, the construction of sealing ointment for the deformation joints and the elaborate construction of the post-pouring belt concrete.
4. The improvement method of the construction technology of the novel water treatment plant according to claim 1, characterized in that the construction steps need to avoid anti-floating treatment of the tank, when the tank body is backfilled, the backfilling is dense according to the standard requirements, the friction coefficient between the tank body and the soil body is increased, after the backfilling, the height and displacement observation times of the tank body are increased in rainy and flood weather, and if abnormal phenomena are found, measures such as weighting the tank body are taken to counteract partial buoyancy or other effective measures.
5. The improvement method of the construction technology of the novel water treatment plant according to claim 1, characterized in that the construction steps require the improvement of the foundation, and as part of the foundation may be located in a soft soil layer such as silt and the like and the thickness of the soft soil layer is larger, the foundation treatment is performed on the soft foundation section which may appear by adopting a replacement method, wherein the replacement method is to dig out the part of the soil body and then backfill the part of the soil body to the foundation elevation by using graded sand and pebbles or other approved materials so as to improve the bearing capacity of the foundation.
6. The improvement method of the construction technology of the novel water treatment plant according to claim 1, characterized in that the sinking construction technology of the open caisson with the coarse grating and the lower part of the water inlet pump house is high in requirement, complex in geological condition, needs to be assigned with workers with open caisson construction experience, and is guided by experts on site.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110199270.XA CN112811745A (en) | 2021-02-22 | 2021-02-22 | Improvement method of novel construction technology of water treatment plant |
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Application publication date: 20210518 |