CN117446938B - System and method suitable for in-situ purification of river water body - Google Patents
System and method suitable for in-situ purification of river water body Download PDFInfo
- Publication number
- CN117446938B CN117446938B CN202311768172.9A CN202311768172A CN117446938B CN 117446938 B CN117446938 B CN 117446938B CN 202311768172 A CN202311768172 A CN 202311768172A CN 117446938 B CN117446938 B CN 117446938B
- Authority
- CN
- China
- Prior art keywords
- water
- river
- axial flow
- coagulant
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 236
- 238000000746 purification Methods 0.000 title claims abstract description 52
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title abstract description 26
- 239000000701 coagulant Substances 0.000 claims abstract description 78
- 238000005345 coagulation Methods 0.000 claims abstract description 46
- 230000015271 coagulation Effects 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 238000004062 sedimentation Methods 0.000 claims abstract description 39
- 239000003814 drug Substances 0.000 claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 27
- 238000001556 precipitation Methods 0.000 claims abstract description 17
- 239000004746 geotextile Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 19
- 238000007667 floating Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 14
- 238000002156 mixing Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000005189 flocculation Methods 0.000 description 9
- 230000016615 flocculation Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000005352 clarification Methods 0.000 description 5
- 241000195493 Cryptophyta Species 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003619 algicide Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000729 antidote Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 244000038651 primary producers Species 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a system and a method suitable for in-situ purification of river water, which relate to the technical field of environmental management and ecological restoration and comprise the following steps: the water taking pipeline, the axial flow pump well, the coagulation reaction box and the sedimentation gallery are sequentially connected in the river along the water flow direction; river water enters the system through a water intake pipeline, a pipeline impeller is arranged at the inlet of the water intake pipeline, a coagulant configuration adding device is further connected with the pipeline impeller, an axial flow pump well is connected with the coagulant configuration and adding device, the axial flow pump well is connected with a coagulation reaction box through a vertical axial flow water pump, easily-precipitated flocs are obtained in the coagulation reaction box, and enter a precipitation gallery along with water flow to carry out precipitation, so that the transparency of the river water is improved, and the precipitated sludge is lifted out of a river channel for treatment. The invention utilizes the water taking pipeline, the pipeline impeller and the vertical axial flow water pump to construct a main body purification system integrating the functions of river water conveying, lifting, medicament adding and mixing, thereby reducing the cost of the purification equipment and guaranteeing the water quality purification effect of the equipment.
Description
Technical Field
The invention relates to the technical field of environmental management and ecological restoration, in particular to a system and a method suitable for in-situ purification of river water bodies.
Background
Recently, china emphasizes water quality improvement in the aspect of water ecological environment protection, and places increased importance on the recovery of the ecological system and biodiversity of river and lake water bodies.
The aquatic plant system is taken as a primary producer of the clean water type ecological system of the river and the lake and is the basis for recovering the clean water type healthy water ecological system. The submerged plant community is taken as an important component of the aquatic plant system, and the recovery quality of the submerged plant community is related to the recovery success or failure of the river and lake water ecological system.
In the process of construction, operation and maintenance of submerged plant communities, it is generally necessary to ensure transparency of a water body so as to meet the care intensity required by submerged plant growth. For water bodies with higher turbidity of urban river and supplied water sources, water quality regulators such as flocculating agents, algae control agents and the like are often required to be added in the later maintenance composition to regulate the transparency of the water bodies, and due to the reasons that the maintenance cost of the project is low and the urban river coast has no corresponding land construction bypass water purification station and the like, the flocculating agents, the algae control agents and the like are directly added into the water bodies of the river in many times, and the transparency is improved, but the precipitated chemical flocculating agents are deposited on river bottoms and submerged plant blades to cause pollution of bottom mud and the risk of secondary pollution; in addition, the purification method of bypass integrated equipment is adopted to purify the river water body, in particular to the rapid clarification of the water body is realized by adopting college precipitation technologies such as magnetic separation, magnetic coagulation and the like and solid-liquid separation technologies such as air flotation, rotary drum filters, quartz sand filters and the like, the purification effect of the integrated equipment is good, but the equipment investment cost is high, the operation is complex, and the large-area occupation of land is required.
Based on the above problems of the existing river water quality adjusting method, it is highly needed to provide a river water body purifying system and method, which avoid secondary pollution to the river water body and reduce the cost of purifying equipment.
Disclosure of Invention
Aiming at the problems, the invention provides a system and a method suitable for in-situ purification of river water, which are characterized in that a main body purification system integrating water delivery, lifting, medicament adding and mixing is constructed by utilizing a water taking pipeline, a pipeline impeller and a vertical axial flow water pump, a multi-stage coagulating sedimentation gallery is constructed in a river by utilizing a geomembrane or geotechnical cloth, chemical sludge generated in the water purification process is controlled in the sedimentation gallery, and the precipitated chemical sludge is pumped into a geotechnical dewatering pipe bag by a sludge suction diaphragm pump for dewatering, so that the cost of purification equipment is reduced, and the water purification effect of the equipment is ensured.
In order to achieve the above object, the present invention provides a system suitable for in-situ purification of river water, comprising: the water taking pipeline, the axial flow pump well, the coagulation reaction box and the sedimentation gallery are sequentially connected in the river along the water flow direction;
river water enters the system through the water intake pipeline, a pipeline impeller is arranged at the inlet of the water intake pipeline, a coagulant configuration adding device is further connected with the pipeline impeller, an axial flow pump well is connected with a coagulant aid configuration and adding device, the axial flow pump well is connected with the coagulation reaction tank through a vertical axial flow water pump, easily-precipitated flocs are obtained in the coagulation reaction tank, enter the precipitation gallery along with water flow to carry out precipitation, the transparency of river water is improved, and the precipitated sludge is lifted to be treated outside a river channel.
As a further improvement of the invention, an opening is arranged on one side of the coagulation reaction box far away from the axial flow pump well, the sedimentation gallery is arranged outside the opening, and the bottom of the sedimentation gallery is provided with a geomembrane/geotextile.
As a further improvement of the invention, the opening is close to the upper end face of the coagulation reaction box, and a water distribution grid mesh is arranged in the coagulation reaction box.
As a further improvement of the invention, the geomembrane/geotextile laid along the river course direction is close to the river levee on one side and the river center on the other side;
the edge of the geomembrane/geotextile close to one side of the river levee is connected with a first floating pipe, so that the side edge is positioned on the water surface, and meanwhile, a balancing weight is arranged to press the edge of the geomembrane/geotextile on the bank slope for fixation;
the geomembrane/geotextile edge near one side of the river center is connected with a second floating pipe, so that the side edge is positioned on the water surface, a plurality of fixing piles are driven into the outer side of the floating pipe along the river direction, and all the fixing piles block the floating pipe and the geomembrane.
As a further improvement of the invention, a plurality of interception dense nets perpendicular to the water flow direction are arranged at intervals on the laying sections of the geomembranes/geotextiles in the sedimentation gallery, each section of geomembrane/geotextile divided by the interception dense nets is provided with a perforation mud collector, all perforation mud collectors are connected with a mud suction diaphragm pump, and the mud suction diaphragm pump lifts the sedimentated mud out of the river for treatment.
As a further improvement of the invention, the precipitated sludge is lifted into a geotechnical dewatering pipe bag for dewatering, the water outlet of the geotechnical dewatering pipe bag is connected with the axial flow pump well, and the separated residual water is input into the system for purifying again.
As a further improvement of the invention, the coagulant configuration adding device comprises a coagulant agent configuration barrel, a first medicine storage barrel and a coagulant adding pipeline, wherein the coagulant agent configuration barrel, the first medicine storage barrel and the coagulant adding pipeline are arranged on the bank of a river channel; the coagulant aid configuration adding device comprises a coagulant aid medicament configuration barrel, a second medicine storage barrel and a coagulant aid adding pipeline which are placed on the bank of the river channel.
As a further improvement of the invention, the water inlet of the vertical axial flow water pump is positioned at the bottom of the axial flow pump well, and the water outlet is connected with an auxiliary pipe to connect the effluent to the bottom of the coagulation reaction tank.
As a further improvement of the invention, the river channel with poor river water mobility is provided with the soft enclosure near the upstream section of the installation section of the purification system, and the river channel is transversely cut off, so that the water pressure at the inlet of the water intake pipeline is higher, and the flow speed is faster.
The invention also provides an in-situ purification method suitable for the river water body, which is characterized in that:
the pipeline impeller operates to generate negative pressure, and river water and coagulant solution are sucked into the axial flow pump well;
the vertical axial flow water pump mixes river water mixed with coagulant aid and lifts the river water to the coagulation reaction tank;
river water, coagulant aid and coagulant are fully mixed in the coagulation reaction tank to form floccules which are easy to settle;
the flocs flow into a precipitation gallery along with river water, and are precipitated to obtain sludge;
the precipitated sludge is lifted to the outside of the river for treatment.
Compared with the prior art, the invention has the beneficial effects that:
the river water quality in-situ purification system and method provided by the invention have the core process of the prior integrated water quality clarification and purification equipment, and the purification effect is better than that of the prior method for purifying the water quality by adding the medicament in situ in the river water body, and the risk of secondary pollution is small. In addition, the system and the method of the invention have the advantages of simple system structure, low investment and operation cost, land occupation saving and the like compared with the integrated water clarification and purification method.
According to the invention, a main body purification system integrating river water conveying, lifting, medicament adding and mixing is constructed by fully utilizing a water taking pipeline, a pipeline impeller and a vertical axial flow water pump, a multi-stage coagulating sedimentation gallery is constructed in a river channel by utilizing a geomembrane or geotechnical cloth, chemical sludge generated in the water purification process is controlled in the sedimentation gallery, and the sedimented chemical sludge is pumped into a geotechnical dewatering pipe bag by a sludge suction diaphragm pump for dewatering, so that the overall water quality purification effect of the system is achieved, and the cost is low.
According to the invention, the water distribution grid mesh is arranged in the coagulation reaction tank, so that the mixing effect of river water and a medicament in the coagulation reaction tank can be improved, and the subsequent precipitation generation effect is improved; meanwhile, by arranging the multistage interception dense net in the sedimentation gallery, the sedimentation of flocculation in the water body can be promoted, the flocculation sedimentation effect is improved, and only the water after multistage flocculation sedimentation can meet the requirement of definition.
Drawings
FIG. 1 is a flow chart of an in-situ purification process device suitable for river water according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of a precipitation corridor suitable for in-situ purification of a river water body, disclosed in an embodiment of the present invention;
FIG. 3 is a flow chart of an in-situ purification process for river water according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of in-situ cyclic purification of a closed channel water body in accordance with one embodiment of the present invention;
FIG. 5 is a schematic diagram of purifying low-flow-rate river water according to an embodiment of the present invention.
Reference numerals illustrate:
1. a water taking pipeline; 2. a pipeline flow impeller; 3. coagulant configuration and storage tanks; 4. coagulant is added into the pipeline; 5. coagulant aid preparation and storage tanks; 6. coagulant aid feeding pipeline; 7. an axial flow pump well; 8. vertical axial flow water pump; 9. a coagulation reaction box; 10. a water distribution grid mesh; 11. geomembrane/geotextile; 12. perforating a mud collecting pipe; 13. a floating pipe; 14. intercepting a dense net; 15. a suction diaphragm pump; 16. a suction pipe; 17. geotechnical dewatering pipe bags; 18. a surplus water discharge line; 19. fixing piles; 20. and (5) balancing weights.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the system for in-situ purification of river water provided by the invention comprises: the water intake pipeline 1, the axial flow pump well 7, the coagulation reaction box 9 and the sedimentation gallery are sequentially connected and distributed in the river along the water flow direction;
the non-standard river water enters the system through a water intake pipeline 1, a pipeline impeller 2 is arranged at the inlet of the water intake pipeline 1, the pipeline impeller 2 is also connected with a coagulant configuration adding device, the pipeline impeller 2 pushes the non-standard river water and coagulant solution (comprising coagulant PAC, algicide, COD remover, ammonia nitrogen remover and other water purification agents) to an axial flow pump well 7 together, and the non-standard river water and coagulant solution are fully mixed and pre-reacted with the river water to decompose and remove SS, blue algae, COD, ammonia nitrogen and other target pollutants in the water body; the axial flow pump well 7 is connected with a coagulant aid configuration and adding device, coagulant aid (including coagulant aid PAM, antidote and other water quality purification synergists) is added into the axial flow pump well 7, the axial flow pump well 7 is connected with the coagulation reaction tank 9 through a vertical axial flow water pump 8, mixed liquor of substandard river water, coagulant aid solution and coagulant aid solution is conveyed to the coagulation reaction tank 9, and the mixed liquor is fully mixed in the coagulation reaction tank 9 to obtain floccules which are easy to precipitate, and in the process, part of SS, blue algae, COD, TP and other pollutants are removed by precipitation, and aquatic toxic substances introduced by the externally added medicament are oxidized and decomposed; the flocs enter a precipitation gallery along with water flow to precipitate, so that the transparency of river water is improved, and the precipitated sludge is lifted out of a river channel for harmless treatment.
Wherein,
as shown in fig. 1, an opening is arranged on one side of the coagulation reaction tank 9 far away from the axial flow pump well 7, preferably, the opening is close to the upper end surface of the coagulation reaction tank 9, so that the mixed solution of the non-standard river water, the coagulant solution and the coagulant aid solution is fully mixed in the coagulation reaction tank 9; the water distribution grid mesh 10 is also arranged in the coagulation reaction box 9, which is also helpful for mixing the water in the coagulation reaction box 9.
Outside the opening is a sedimentation gallery, and the bottom of the sedimentation gallery is provided with a geomembrane/geotextile 11. Specifically, the geomembrane/geotextile 11 laid along the river course direction has one side close to the river levee and the other side close to the river center; the edge of the geomembrane/geotextile 11 close to one side of the river levee is connected with a first floating pipe 13, so that the side edge is positioned on the water surface, and meanwhile, a balancing weight 20 is arranged to press the edge of the geomembrane/geotextile 11 on a bank slope for fixation; the geomembrane/geotextile 11 edge connection second float pipe 13 near river center one side makes this side be located surface of water department, and a plurality of fixed piles 19 are driven into along the river course direction in the float pipe 13 outside, and the fixed column can adopt pine stake or steel-pipe pile, and all fixed piles 19 block float pipe 13 and geomembrane, and the above-mentioned measure has avoided leading to the fact geomembrane or geotechnical cloth to float from top to bottom, left and right owing to the rivers disturbance of anterior segment inflow, influences flocculating constituent sedimentation effect.
Further, the method comprises the steps of,
a plurality of interception dense nets 14 perpendicular to the water flow direction are arranged at intervals on the laying sections of the geomembrane/geotextile 11 in the sedimentation corridor, the interception dense nets 14 are beneficial to the sedimentation of flocculation in the water body, the river water after sedimentation basically reaches the required transparency, and after passing through the last interception dense net 14, the river water directly flows back to the river channel; as shown in fig. 2, the intercepting dense net 14 covers the cross section of the whole geomembrane layout width, each section of geomembrane/geotextile 11 divided by the intercepting dense net 14 is provided with a perforated mud collector, all perforated mud collectors are connected with a mud suction diaphragm pump 15 through a mud suction pipe 16, and the mud suction diaphragm pump 15 lifts the settled mud out of the river for treatment. Specifically, the settled sludge is lifted into a geotechnical dewatering pipe bag 17 for dewatering, the water outlet of the geotechnical dewatering pipe bag 17 is connected with an axial flow pump well 7, and the separated residual water is input into the system through a residual water discharge pipeline 18 for purifying again.
The coagulant configuration adding device comprises a coagulant agent configuration barrel, a first medicine storage barrel and a coagulant adding pipeline 4 which are placed on the bank of a river channel; the coagulant aid configuration adding device comprises a coagulant aid medicament configuration barrel, a second medicament storage barrel and a coagulant aid adding pipeline 6 which are arranged on the bank of the river channel.
As shown in fig. 1, the water inlet of the vertical axial flow water pump 8 is positioned at the bottom of the axial flow pump well 7, water with highest coagulant aid solution concentration is conveyed to the coagulation sedimentation tank, the water outlet of the vertical axial flow water pump 8 is connected with an auxiliary pipe, and the water outlet is connected to the bottom of the coagulation reaction tank 9, so that the mixing and fusion of the substandard water body, the coagulant and the coagulant aid can stay in the coagulation reaction tank 9 for a longer time, and a better coagulation effect is achieved.
As shown in fig. 5, in the river course with poor river fluidity, a soft enclosure is arranged on the installation section of the purification system close to the upstream section, a counterweight is arranged on the lower part of the soft enclosure, and the specific weight of the counterweight needs to be reasonably set according to the flow rate of the river course water body; the soft enclosure transversely cuts off the river channel, when the flow speed of the river channel is high and the water quantity is large, the counterweight at the bottom of the soft enclosure is washed up by river water, and the river water is discharged from the bottom; when the flow rate of the river channel is small and the water quantity is small, the upstream inflow water is conveyed into the system through the water taking pipeline 1 for treatment and then discharged to the downstream. The water intake pipe 1 is fully used for taking water.
As shown in fig. 3, the present invention further provides a method for in-situ purification of river water, which comprises:
the pipeline impeller 2 operates to generate negative pressure, and river water and coagulant solution are sucked into the axial flow pump well 7;
the vertical axial flow water pump 8 mixes river water mixed with coagulant aid and lifts the river water to the coagulation reaction tank 9;
river water, coagulant aid and coagulant are fully mixed in a coagulation reaction tank 9 to form floccules which are easy to settle;
the flocs flow into a sedimentation corridor along with river water, sludge is obtained by sedimentation, and particularly the sedimentation corridor comprises a flocculation primary sedimentation section, a secondary sedimentation section and a clear water section, the sludge is obtained by twice sedimentation, and finally the clear water can reach the required transparency;
the precipitated sludge is lifted out of the river channel for harmless treatment, such as drying treatment.
Example 1
The invention discloses a system and a method suitable for in-situ purification of river water, which aim at a 500-meter long broken-end river water in-situ purification scheme, wherein an effect diagram is shown in fig. 4, and the whole layout and application processes are as follows:
(1) The water taking pipeline 1 is laid
A 200 m long DN400 (water taking section) and a 200 m long DN300 HDPE (conveying section) double-wall corrugated pipe which are connected are laid in the river channel to serve as a water taking pipeline 1, and the water taking pipeline 1 is fixed by a bracket through a cross pine pile driven in the river channel; every 4 meters of the cross pine pile fixing brackets are arranged. And a 1.5KW impeller and a reserved medicament adding hole are arranged at the joint of the water taking section DN400 and the conveying section DN300 HDPE double-wall corrugated pipe of the water taking pipeline 1. DN300 HDPE double-wall corrugated pipe is connected into the axial flow pump well 7 to realize the function of conveying the far-end river water into the pump well.
(2) Integrated axial-flow pump station installation
The axial flow pump well 7 is a plastic finished sand-settling well, the power of the vertical axial flow pump 8 is 3.0kw, the flow is 250m, and the lift is 3 meters. The vertical axial flow water pump 8 is arranged in a plastic finished sand-settling well and is fixed into a whole, and the river bottom is flattened and hardened during the installation.
(3) The coagulation reaction box 9 is installed
The coagulation reaction tank 9 is formed by welding carbon steel materials, namely a steel water tank is adopted for asphalt corrosion prevention treatment. Size: 3 m.times.2 m. The water distribution grid mesh 10 is arranged in the coagulation reaction box 9, which is helpful for water mixing; when the box body is installed and fixed, the river bottom is flattened and hardened, and after the installation, the water outlet of the vertical axial flow water pump 8 is connected to the bottom of the coagulation reaction box 9 through the connecting auxiliary pipe, so that the medicines can be fully and uniformly mixed.
(4) Precipitation gallery layout
1 DN50 steel pipe pile with the length of 4 meters is driven into each 3 meters of the offshore position at intervals, and the depth of the driven-in river bottom is more than 2 meters. Then, two sides of geotextile (500 g/square meter) with a width of 6 m and a length of 100m are bound and connected with the floating pipe 13, and then the geotextile is pressed to the river bottom by the counterweight cement blocks from the side of the steel pipe pile to the side of the bank slope. As shown in fig. 2, the side floating pipe 13 close to the steel pipe pile is tied and fixed with the steel pipe pile through nylon ropes; the geotextile is pressed by the counterweight cement blocks when approaching the bank slope side, so that the geotextile is prevented from being washed up by water flow; the starting end of the precipitation gallery is connected with a water outlet groove at the opening of the coagulation reaction box 9, and the tail end of the precipitation gallery is directly connected into the river water body.
(5) Perforated mud collecting pipe 12 layout
The perforated mud collecting pipe 12 is a U-PVC pipe with holes at the periphery, the perforated mud collecting pipe 12 is penetrated into the perforated cement blocks, and the perforated mud collecting pipe 12 is fixed and then is sunk into geotextile at the bottoms of the upstream 60-meter floc primary sedimentation section and the upstream 60-meter floc secondary sedimentation section, and the cement blocks at the two sides of the perforated mud collecting pipe 12 are properly adjusted to prevent the perforated mud collecting pipe 12 from being wrapped by the geotextile.
(6) The interception net 14 is arranged
After the perforated mud collecting pipe 12 is installed, the bottom edge of a 120-mesh nylon net with the length of 3 meters and the width of 2 meters is connected with an iron chain by a nylon ribbon, and the parallel edge is bound with a floating pipe 13 by a nylon ribbon. Then the bottom edge connected with the iron chain is sunk into the river bottom in the direction perpendicular to the water flow, one side tied with the floating pipe 13 floats on the water surface, one end of the steel pipe pile is fixed with the nylon rope, and the other end of the steel pipe pile is fixed with the cement block on the bank slope, so that the water flow can be ensured to intercept the flocs in the water body when passing through the nylon dense net. The interception net 14 is provided with 1 channel every 1 meter, and 60 channels in total.
(7) Suction and dewatering system arrangement
And (3) leveling a 5 m multiplied by 5 m site at the position of the bank near the axial flow pump well 7, paving a composite geomembrane (two cloth membranes), compacting the periphery of the geomembrane by using a soil bag, and paving a 100mm thick pebble water filtering layer on the membrane. A 800 multiplied by 800 water collecting well is built at a position close to the axial flow pump well 7, a water outlet pipe of the water collecting well is connected to the axial flow pump well 7, and the collected geotechnical dewatering pipe bags 17 are used for filtering water and discharging the filtered water into the axial flow pump well 7. A 4 m x 4 m geotechnical dewatering tube bag 17 is laid on the pebble water filtering layer for dewatering the discharged sediment sludge. The mud suction diaphragm pump 15 connects the mud inlet pipe of the geotechnical dewatering pipe bag 17 with the mud suction pipe 16, in addition, in order to improve the dewatering effect of the geotechnical dewatering pipe bag 17, the inlet end of the mud suction diaphragm pump 15 is connected with a coagulant aid storage tank through a tee joint, and coagulant aid is added during mud suction.
(8) Medicament configuration and dosing system installation
The agent configuration adding device comprises a coagulant configuration and storage tank 3 (comprising a coagulant configuration adding device and a first medicine storage barrel), a coagulant aid configuration and storage tank 5 (comprising a coagulant aid configuration adding device and a second medicine storage barrel), the coagulant aid configuration adding device comprises a coagulant aid agent configuration barrel and a coagulant aid adding pipeline 4, the coagulant aid configuration adding device comprises a coagulant aid agent configuration barrel, a first medicine storage barrel and a coagulant aid adding pipeline 6, and the coagulant aid agent configuration barrel, the second medicine storage barrel and the coagulant aid agent configuration barrel all select PE barrels with the volume of 1000L to prepare water purification agents such as coagulant PAC, coagulant aid PAM, algicides and the like. The coagulant adding pipeline 4 and the coagulant adding pipeline 6 which are respectively connected with the first medicine storage barrel and the second medicine storage barrel are respectively provided with flow control ball valves, and negative pressure is generated through the self-flow or pipeline impeller 2, the vertical axial flow water pump 8 or the mud suction diaphragm pump 15, so that the medicine is added into the water body.
(9) System debug operation
In the running process of the water taking pipeline 1, the pipeline impeller 2 and the vertical axial flow water pump 8, the coagulant PAC solution is sucked through the negative pressure generated when the pipeline impeller 2 runs and is fully mixed with river water and then is sent to the axial flow pump well 7, and the vertical axial flow pump is used for mixing the coagulant aid PAM solution with the river water which is converged with PAC and then lifting the mixture into the coagulation reaction tank 9 to fully react to form the floccule which is easy to settle. The whole sedimentation gallery can be generally divided into a primary flocculation sedimentation section, a secondary sedimentation section and a clear water section, and the flocculation flows through the primary flocculation sedimentation section, the secondary sedimentation section and the clear water section in sequence and then is converged into a river channel. The flocculated sludge deposited in the primary and secondary flocculation sedimentation sections is discharged into a bank geotechnical dewatering tube bag 17 for concentration and dewatering through a bottom perforated sludge collecting tube 12 and a sludge sucking tube 16 by a sludge sucking diaphragm pump 15, and the residual water is discharged into an axial flow pump well 7 for treatment.
Example 2
As shown in fig. 5, for a flowing river, the river is transversely cut off by using a soft enclosure at a relatively narrow place at the upstream of the treatment section, and the counterweight at the lower part of the soft enclosure is required to be reasonably arranged according to the flow velocity of the water body of the river. When the flow speed is high and the water quantity is large, the bottom counterweight is washed up by river water, and the river water is discharged from the bottom; the flow rate is low, the water quantity is low, and the upstream water is conveyed into the system through the water taking pipeline 1 for treatment and then discharged to the downstream.
The invention has the advantages that:
the river water quality in-situ purification system and method provided by the invention have the core process of the prior integrated water quality clarification and purification equipment, and the purification effect is better than that of the prior method for purifying the water quality by adding the medicament in situ in the river water body, and the risk of secondary pollution is small. In addition, the system and the method of the invention have the advantages of simple system structure, low investment and operation cost, land occupation saving and the like compared with the integrated water clarification and purification method.
According to the invention, a main body purification system integrating river water conveying, lifting, medicament adding and mixing is constructed by fully utilizing a water taking pipeline, a pipeline impeller and a vertical axial flow water pump, a multi-stage coagulating sedimentation gallery is constructed in a river channel by utilizing a geomembrane or geotechnical cloth, chemical sludge generated in the water purification process is controlled in the sedimentation gallery, and the sedimented chemical sludge is pumped into a geotechnical dewatering pipe bag by a sludge suction diaphragm pump for dewatering, so that the overall water quality purification effect of the system is achieved, and the cost is low.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A system suitable for in situ purification of a river water body, comprising: the water taking pipeline, the axial flow pump well, the coagulation reaction box and the sedimentation gallery are sequentially connected in the river along the water flow direction;
river water enters the system through the water intake pipeline, a pipeline impeller is arranged at the inlet of the water intake pipeline, a coagulant configuration adding device is further connected with the pipeline impeller, the axial flow pump well is connected with the coagulant configuration adding device, the axial flow pump well is connected with the coagulation reaction tank through a vertical axial flow water pump, flocs easy to precipitate are obtained in the coagulation reaction tank, an opening is arranged at one side of the coagulation reaction tank, which is far away from the axial flow pump well, the opening is close to the upper end surface of the coagulation reaction tank, the precipitation gallery is arranged at the outer side of the opening, a geomembrane/geotechnical cloth is arranged at the bottom of the precipitation gallery, and the flocs enter the precipitation gallery along with water flow to precipitate, so that the transparency of the river water is improved;
a plurality of interception dense nets perpendicular to the water flow direction are arranged at intervals on the laying sections of the geomembranes/geotextiles in the sedimentation gallery, each section of geomembrane/geotextile divided by the interception dense nets is provided with a perforation mud collector, all perforation mud collectors are connected with a mud suction diaphragm pump, and the mud suction diaphragm pump lifts the sedimentated mud out of a river for treatment;
the geomembrane/geotextile is paved along the river course direction, one side of the geomembrane/geotextile is close to the river levee, and the other side of the geomembrane/geotextile is close to the river center; the edge of the geomembrane/geotextile close to one side of the river levee is connected with a first floating pipe, so that the side edge is positioned on the water surface, and meanwhile, a balancing weight is arranged to press the edge of the geomembrane/geotextile on the bank slope for fixation; the geomembrane/geotextile edge near one side of the river center is connected with a second floating pipe, so that the side edge is positioned on the water surface, a plurality of fixing piles are driven into the outer side of the floating pipe along the river direction, and all the fixing piles block the floating pipe and the geomembrane.
2. The system for in-situ purification of river water of claim 1, wherein: and a water distribution grid mesh is arranged in the coagulation reaction box.
3. The system for in-situ purification of river water of claim 1, wherein: and lifting the precipitated sludge into a geotechnical dewatering pipe bag for dewatering, wherein a water outlet of the geotechnical dewatering pipe bag is connected with the axial flow pump well, and the separated residual water is input into the system for purifying again.
4. The system for in-situ purification of river water of claim 1, wherein: the coagulant configuration adding device comprises a coagulant agent configuration barrel, a first medicine storage barrel and a coagulant adding pipeline, wherein the coagulant agent configuration barrel, the first medicine storage barrel and the coagulant adding pipeline are arranged on the bank of a river channel; the coagulant aid configuration adding device comprises a coagulant aid medicament configuration barrel, a second medicine storage barrel and a coagulant aid adding pipeline which are placed on the bank of the river channel.
5. The system for in-situ purification of river water of claim 1, wherein: the water inlet of the vertical axial flow water pump is positioned at the bottom of the axial flow pump well, the water outlet of the vertical axial flow water pump is connected with an auxiliary pipe, and the water outlet of the vertical axial flow water pump is connected to the bottom of the coagulation reaction tank.
6. The system for in-situ purification of river water of claim 1, wherein: river course that river mobility is relatively poor, the section is close to the soft wall of upstream section installation at clean system installation section, transversely cuts the river course, makes intake pipe entrance water pressure bigger, and the velocity of flow is faster.
7. The system for in-situ purification of river water body according to any one of claims 1 to 6, wherein the system for in-situ purification of river water body is characterized in that:
the pipeline impeller operates to generate negative pressure, and river water and coagulant solution are sucked into the axial flow pump well;
the vertical axial flow water pump mixes river water mixed with coagulant aid and lifts the river water to the coagulation reaction tank;
river water, coagulant aid and coagulant are fully mixed in the coagulation reaction tank to form floccules which are easy to settle;
the flocs flow into a precipitation gallery along with river water, and are precipitated to obtain sludge;
the precipitated sludge is lifted to the outside of the river for treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311768172.9A CN117446938B (en) | 2023-12-21 | 2023-12-21 | System and method suitable for in-situ purification of river water body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311768172.9A CN117446938B (en) | 2023-12-21 | 2023-12-21 | System and method suitable for in-situ purification of river water body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117446938A CN117446938A (en) | 2024-01-26 |
| CN117446938B true CN117446938B (en) | 2024-03-22 |
Family
ID=89589465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311768172.9A Active CN117446938B (en) | 2023-12-21 | 2023-12-21 | System and method suitable for in-situ purification of river water body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117446938B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080099092A (en) * | 2007-05-08 | 2008-11-12 | 에코랜드 주식회사 | Non-dredging reactive in-situ sediment treatment facility and process, and clean-up and remediation of river, lake and reservoir by this |
| CN102531289A (en) * | 2012-01-12 | 2012-07-04 | 苏州科技学院 | On-site purification system for urban black and smelly inland rivers |
| CN203066038U (en) * | 2012-12-28 | 2013-07-17 | 浙江桃花源环保科技有限公司 | Soft isolation device for river channel |
| CN207193063U (en) * | 2017-09-06 | 2018-04-06 | 广州太和水生态科技有限公司 | River course point-source pollution home position strengthening processing system |
| CN208471678U (en) * | 2018-05-10 | 2019-02-05 | 南京泽辉环保科技有限公司 | A kind of river channel sewage intercepting purification system |
| CN110436633A (en) * | 2019-07-25 | 2019-11-12 | 缪诗雨 | A kind of river channel sewage intercepting purification system |
| CN209635983U (en) * | 2019-02-19 | 2019-11-15 | 北京汇恒环保工程股份有限公司 | A kind of system that soft enclosure combination restoration of the ecosystem is administered in situ for black and odorous water |
| CN112279382A (en) * | 2020-11-11 | 2021-01-29 | 贵州绿纯环境开发有限公司 | River course water processing system |
| CN216513195U (en) * | 2021-11-16 | 2022-05-13 | 江苏龙腾工程设计股份有限公司 | Low-carbon and energy-saving riverway in-situ flocculation precipitation treatment system |
| CN217555952U (en) * | 2022-05-17 | 2022-10-11 | 中国环境科学研究院 | Modular bypass accident sewage emergency disposal system |
| CN218436935U (en) * | 2022-06-13 | 2023-02-03 | 上海太和水科技发展股份有限公司 | Liftable soft enclosure system |
-
2023
- 2023-12-21 CN CN202311768172.9A patent/CN117446938B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080099092A (en) * | 2007-05-08 | 2008-11-12 | 에코랜드 주식회사 | Non-dredging reactive in-situ sediment treatment facility and process, and clean-up and remediation of river, lake and reservoir by this |
| CN102531289A (en) * | 2012-01-12 | 2012-07-04 | 苏州科技学院 | On-site purification system for urban black and smelly inland rivers |
| CN203066038U (en) * | 2012-12-28 | 2013-07-17 | 浙江桃花源环保科技有限公司 | Soft isolation device for river channel |
| CN207193063U (en) * | 2017-09-06 | 2018-04-06 | 广州太和水生态科技有限公司 | River course point-source pollution home position strengthening processing system |
| CN208471678U (en) * | 2018-05-10 | 2019-02-05 | 南京泽辉环保科技有限公司 | A kind of river channel sewage intercepting purification system |
| CN209635983U (en) * | 2019-02-19 | 2019-11-15 | 北京汇恒环保工程股份有限公司 | A kind of system that soft enclosure combination restoration of the ecosystem is administered in situ for black and odorous water |
| CN110436633A (en) * | 2019-07-25 | 2019-11-12 | 缪诗雨 | A kind of river channel sewage intercepting purification system |
| CN112279382A (en) * | 2020-11-11 | 2021-01-29 | 贵州绿纯环境开发有限公司 | River course water processing system |
| CN216513195U (en) * | 2021-11-16 | 2022-05-13 | 江苏龙腾工程设计股份有限公司 | Low-carbon and energy-saving riverway in-situ flocculation precipitation treatment system |
| CN217555952U (en) * | 2022-05-17 | 2022-10-11 | 中国环境科学研究院 | Modular bypass accident sewage emergency disposal system |
| CN218436935U (en) * | 2022-06-13 | 2023-02-03 | 上海太和水科技发展股份有限公司 | Liftable soft enclosure system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117446938A (en) | 2024-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102351376B (en) | Riverbank multiple pond wetland waste sewage treatment method and device | |
| CN104174191B (en) | Integral grit chamber for treating rainwater and treating method | |
| CN106242239A (en) | Polluted bed mud industrial treatment and regenerative system are gushed in lake, river | |
| CN101254991A (en) | Method for controlling lake eutrophication by eliminating river or aqueduct pollution | |
| CN105461192A (en) | Decentralized type rapid dewatering and residual water purification system and method for river bottom mud | |
| CN110171917A (en) | A kind of integrated shore bank band system and its application of river and lake silt treatment in situ | |
| CN105401552A (en) | Method for transforming saline-alkali wasteland into low-pollution water-wet land deep treatment system | |
| CN111908748A (en) | River channel dredging method | |
| CN102120677A (en) | Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method | |
| CN109020114A (en) | A kind of sludge solidification treatment process | |
| CN107915392A (en) | Small river sludge ecological treatment system in cities and towns | |
| CN108423917A (en) | A kind of pollutant fluxes combination unit and its technique for rainfall pumping station | |
| CN109322372A (en) | The non-buried rainwater treatment device of one kind and method | |
| CN107806062B (en) | Construction method of biological filtration slope protection for riverway restoration | |
| CN117446938B (en) | System and method suitable for in-situ purification of river water body | |
| CN111574013A (en) | Double-mixing and dynamic-mixing sludge high-dryness dehydration process | |
| CN214360935U (en) | Environment-friendly dredging device for river channel treatment | |
| CN207376783U (en) | A kind of non-buried rainwater treatment device | |
| CN101209885A (en) | Wastewater treatment method of garbage leachate | |
| CN207608463U (en) | A kind of municipal drainage system | |
| CN207418507U (en) | A kind of old town black-odor riverway governing system | |
| JP2006082005A (en) | Muddy water treatment system and muddy water treatment method therefor | |
| CN102351317A (en) | Sewage treatment artificial wetland system | |
| CN102795708B (en) | Water quality purifying system, waste water treatment device, and natural non-point purifying device | |
| CN108457178A (en) | A kind of environmentally friendly collection and purification system of across rivers bridge floor sewage/wastewaters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |