CN116639823A - In-situ circulation repair system and in-situ circulation repair method for rivers and lakes - Google Patents
In-situ circulation repair system and in-situ circulation repair method for rivers and lakes Download PDFInfo
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- CN116639823A CN116639823A CN202310718960.0A CN202310718960A CN116639823A CN 116639823 A CN116639823 A CN 116639823A CN 202310718960 A CN202310718960 A CN 202310718960A CN 116639823 A CN116639823 A CN 116639823A
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 60
- 230000008439 repair process Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 234
- 239000002101 nanobubble Substances 0.000 claims abstract description 146
- 230000005855 radiation Effects 0.000 claims abstract description 33
- 239000013049 sediment Substances 0.000 claims abstract description 27
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 10
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 8
- 238000002679 ablation Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims 5
- 238000002347 injection Methods 0.000 abstract description 17
- 239000007924 injection Substances 0.000 abstract description 17
- 238000012851 eutrophication Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 238000005273 aeration Methods 0.000 description 14
- 235000016709 nutrition Nutrition 0.000 description 8
- 238000006213 oxygenation reaction Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 244000058871 Echinochloa crus-galli Species 0.000 description 1
- 241001113556 Elodea Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000015225 Panicum colonum Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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- 239000013589 supplement Substances 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a river and lake in-situ circulation repair system and a river and lake in-situ circulation repair method, wherein the river and lake in-situ circulation repair system comprises a plurality of river and lake in-situ circulation repair devices and a water pump positioned in a river and lake oxygen deficiency area; the river and lake in-situ circulation repairing device comprises a stand column platform, a hollow stand column and a micro-nano bubble generator, wherein the stand column platform is positioned above the water surface of the river and lake dead water or near the river and lake bank slope, the bottom surface of the stand column platform is fixedly connected with the top end of the hollow stand column, the bottom end of the hollow stand column is fixed in bottom mud, a plurality of micro-nano bubble injection holes below the water surface are distributed on the hollow stand column, micro-nano bubbles sprayed out of the micro-nano bubble injection holes diffuse into water to form a micro-nano bubble radiation area, and a water pump sprays water columns above the stand column platform through corresponding water pipes, so that the water columns fall onto the top surface of the stand column platform and are reflected to form a water curtain. The invention can solve the problems of high eutrophication degree, blackening, stinking and upward turning of the sediment in rivers and lakes, and provides a solution for restoring the complex pollution of the water body and the sediment and recycling.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a river and lake in-situ circulation repair system and a river and lake in-situ circulation repair method.
Background
Due to the fact that the areas of the lakes are different in size, depth and surrounding environments, the nutritional components contained in different lakes are different, the lakes are generally divided into lean nutritional lakes and rich nutritional lakes, the lean nutritional lakes always evolve towards the rich nutritional lakes from the evolution rule of the lakes, modern artificial nutrition has a great influence on the nutrition of the lakes, the development is extremely rapid, and one lake can be rapidly changed from a lean nutritional state to a rich nutritional state in decades or even years. And for lakes or broken-end rivers with poor river-lake connectivity, the eutrophication degree is very easy to cause, so that the water quality is deteriorated to five categories, and the conditions of blackening, stinking, upward turning of bottom mud and the like are accompanied.
The water hypoxia is the root cause of black and odorous river, and the selection of proper oxygenation mode is an important technical link for bioremediation of urban black and odorous river. The dissolved oxygen in the water body mainly depends on factors such as algae oxygen release amount, atmospheric reoxygenation, organic pollution biochemical oxygen consumption of the water body, and sediment oxygen consumption, wherein the added dissolved oxygen is mainly used for the water body with deeper river and lake water and an anaerobic layer, so as to supplement the dissolved oxygen in the water body, eliminate the anaerobic layer, keep the water body in an oxygen state, further be beneficial to the survival of zooplankton, contribute to the conversion of a water body microorganism zone from anaerobic to aerobic, inhibit the growth and propagation of algae and the release of sediment nutrient substances, eliminate the black and odorous water body, promote succession of aquatic animals after the added dissolved oxygen, enhance the microbial evolution and plant succession in the water body and the sediment, and in addition, the sediment is a main accumulation place of pollutants and an important component part of a water ecological system, and is also an important material homing in the water body, after the river point source pollution and non point source pollution are effectively controlled, the release of the polluted sediment is a main reason causing water quality deterioration, and the setting of the sediment stable zone is particularly important.
Current aeration techniques include forced air micro-porous aeration techniques and submerged jet aeration techniques. The forced air microporous aeration technology has the defects that a microporous aeration head is easy to block or fall off, the running noise of an air blower is large, and a construction machine room occupies the land; the submersible jet aeration technology has the defects of uneven aeration, low aeration efficiency and high average energy consumption, is not suitable for wider riverways, and is usually fixed on river channel lapel by adopting expansion screws and angle steel brackets, is perpendicular to the river water flow direction for aeration, and can be fixed in the center of the riverway under individual conditions, is parallel to the river water flow direction for aeration, adopts jet aeration, the injection height of the submersible jet aeration machine is not more than 1m, or aerosol or water mist is easy to form, the surrounding environment is influenced, and for severe black and odorous water bodies, jet aeration facilities are not adopted, because the diameter of aeration bubbles is generally more than 4mm, the oxygenation efficiency is generally 4% -8%, and the oxygenation efficiency is lower.
Disclosure of Invention
In view of the defects in the prior art, the invention provides a river and lake in-situ circulation repair system and a river and lake in-situ circulation repair method, which can solve the problems of high eutrophication degree, blackening and stinking and bottom mud upturning of lakes or broken-end rivers with poor connectivity of the river and the lake.
The technical scheme adopted for solving the technical problems is as follows:
a river and lake in-situ circulation restoration system comprises a plurality of river and lake in-situ circulation restoration devices and a water pump positioned in a river and lake oxygen-deficient area; the river and lake in-situ circulation repairing device comprises a stand column platform, a hollow stand column and a micro-nano bubble generator, wherein the stand column platform is positioned above the water surface of river and lake dead water or near the river and lake bank slope, the bottom surface of the stand column platform is fixedly connected with the top end of the hollow stand column, the bottom end of the hollow stand column is fixed in bottom mud of the river and lake, a plurality of micro-nano bubble spray holes which are positioned below the water surface and connected with the outlet of the micro-nano bubble generator are distributed on the hollow stand column, micro-nano bubbles sprayed out of the micro-nano bubble spray holes diffuse into water to form a micro-nano bubble radiation area, and a water pump is used for spraying water columns above the stand column platform through corresponding water pipes, so that the water columns fall onto the top surface of the stand column platform and are reflected to form a water curtain, and the water inlet boundary line of the water curtain is positioned in the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area.
Further, the upright post platform is circular and horizontally arranged, the hollow upright post is cylindrical and vertically arranged, and the top end of the hollow upright post is fixedly connected with the middle part of the bottom surface of the upright post platform.
Further, the central line of the tail of the water pipe is vertical and coincides with the central line of the upright post platform, so that a water column vertically falls to the middle part of the top surface of the upright post platform and is reflected to form a hemispherical water curtain.
Further, the diameter of the upright post platform is controlled to be 20-40cm, the diameter of the tail part of the water pipe is 30-60% of the diameter of the upright post platform, the pressure of water columns sprayed out from the tail end of the water pipe is controlled to be 0.4-1MPa, and the vertical distance between the upright post platform and the water surface is controlled to be 20-30cm.
Further, the water inlet boundary line of the water curtain is positioned at the position 5-20cm inward of the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area.
Further, each micro-nano bubble jet hole is connected with an outlet of the micro-nano bubble generator through a corresponding pipeline, each pipeline is provided with a switch valve and a pressure regulating valve, the pressure regulating valve is used for regulating the jet pressure of water entering the corresponding micro-nano bubble jet hole, and the jet pressure is controlled to be 0.5-1MPa.
Further, the micro-nano bubble jet holes are uniformly and alternately distributed on the hollow upright post under the water surface, the vertical distance between the center of the lowest micro-nano bubble jet hole and the top surface of a bottom mud stabilizing area formed around the bottom mud is controlled to be 20-30cm, the distance between the centers of the adjacent micro-nano bubble jet holes on the same vertical line at the center is controlled to be 10-30cm, and the angle of an arc formed by the central connecting lines of the adjacent micro-nano bubble jet holes on the same horizontal plane at the center is controlled to be 60-90 degrees.
Further, a transition area is formed around the edge of the micro-nano bubble radiation area, and the transition area is used for carrying micro-nano bubbles to extend under the action of jet pressure when water curtain is put into water.
The in-situ circulation repair method for the river and the lake adopts the in-situ circulation repair system for the river and the lake, and comprises the following steps:
s1, aiming at one of the river and lake in-situ circulation repairing devices, starting the micro-nano bubble generator, ejecting micro-nano bubbles through each micro-nano bubble jet hole, and diffusing the micro-nano bubbles into water to form a micro-nano bubble radiation area;
s2, when the micro-nano bubble generator works for a period of time, starting a water pump, spraying a water column above the upright post platform by the water pump through a water pipe, enabling the water column to fall onto the top surface of the upright post platform and reflect to form a water curtain, enabling water curtain water entering to carry micro-nano bubbles to extend out of a micro-nano bubble radiation area under the action of spraying pressure, enabling stagnant water of a river or a water body close to a river-lake bank slope to circularly flow, and increasing dissolved oxygen in the water;
s3, the ferro-manganese element in the sediment 401 forms a ferro-manganese oxide thin layer under the condition of micro-nano bubble oxygen supply so as to stabilize the sediment 401.
Further, the step S1 specifically includes: and starting the micro-nano bubble generator aiming at one of the river and lake in-situ circulation repairing devices, spraying micro-nano bubbles through micro-nano bubble spraying holes at the middle part of the hollow upright post under the water surface for a period of time, and spraying micro-nano bubbles through micro-nano bubble spraying holes at other positions of the hollow upright post under the water surface for a period of time, wherein the micro-nano bubbles diffuse into the water and form a micro-nano bubble radiation area.
Compared with the prior art, the invention has the beneficial effects that:
the in-situ circulation repair system of the river and the lake aims at one in-situ circulation repair device of the river and the lake, a micro-nano bubble generator is started, micro-nano bubbles are sprayed out through each micro-nano bubble spraying hole, and are diffused into water to form a micro-nano bubble radiation area, when the micro-nano bubble generator works for a period of time, a water pump is started, the water pump sprays water columns above a column platform through a water pipe, the water columns fall onto the top surface of the column platform and are reflected to form a water curtain, the water curtain water inlet carries the micro-nano bubbles to extend out of the micro-nano bubble radiation area under the action of spraying pressure, so that dead water of the river and the lake or a water body close to a river and a lake bank slope circularly flows, dissolved oxygen in the water is increased, and the water pump is positioned in the water body of the river and the lake oxygen area, the method is characterized in that the method comprises the steps of carrying micro-nano bubbles to the outside of a micro-nano bubble radiation area under the action of jet pressure, and ensuring that the water body in the river-lake oxygen area flows to the periphery by carrying the micro-nano bubbles to enable the water body to flow in a full circulation mode so as to form a large circulation of oxygen-carrying water bodies in the river-lake, and the in-situ circulation restoration devices of the river-lake are distributed at the position of the dead water of the river-lake or the position close to the bank slope of the river-lake, so that the in-situ circulation restoration devices of the river-lake can work simultaneously, the dead water of the river-lake or the water body close to the bank slope of the river-lake can flow in a full circulation mode, and the dissolved oxygen in the water can be further increased, so that the problems of high eutrophication degree, blackening and stink and bottom sludge upturning of lakes or broken heads of the river with poor connectivity of the river-lake can be solved.
In the invention, the upright post platform is circularly and horizontally arranged, the hollow upright post is circularly and vertically arranged, the top end of the hollow upright post is fixedly connected with the middle part of the bottom surface of the upright post platform, the central line of the tail part of the water pipe is vertical and coincides with the central line of the upright post platform, so that a water column vertically falls to the middle part of the top surface of the upright post platform and is reflected to form a hemispherical water curtain, and the water inlet boundary line of the water curtain is positioned in the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area; the hemispherical water curtain is completely positioned in the micro-nano bubble radiation area and covers most of the micro-nano bubble radiation area, so that the concentration of micro-nano bubbles is ensured, the micro-nano bubbles are prevented from overflowing the water surface to dissipate and break, and the dissolved oxygen in the water can be fully increased.
In conclusion, the in-situ circulation repair system for rivers and lakes can increase oxygenation efficiency in water to a greater extent, increase circulation flow of water, and improve oxygenation efficiency from 4% -8% to 20% -25% in the prior art.
Drawings
FIG. 1 is a schematic structural diagram of one of the in-situ circulation repair devices in the in-situ circulation repair system for rivers and lakes of the present invention;
FIG. 2 is a schematic diagram of an in-situ circulation repair device for one of the river and lake;
FIG. 3 is a schematic structural diagram of the connection of each micro-nano bubble jet hole and a micro-nano bubble generator in one of the river and lake in-situ circulation repair devices;
FIG. 4 is a schematic structural view of a plurality of in-situ circulation repair devices arranged near a river-lake bank slope;
fig. 5 is a schematic structural view of two river and lake in-situ circulation repair devices arranged at the broken end position of a broken end river or a broken end lake.
The reference numerals in the drawings illustrate: 1. river and lake normal position circulation prosthetic devices, 101, stand platform, 102, cavity stand, 1021, micro-nano bubble jet orifice, 1031, micro-nano bubble generator 1032, pipeline, 104, micro-nano bubble radiation area, 105, water column, 106, water curtain, 107, transition area, 2, river and lake oxygen deficiency area, 301, water pump, 302, water pipe, 401, bottom mud, 402, bottom mud firm area, 5, the surface of water, 6, dyke bank.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The in-situ circulation repair system for the river and the lake comprises a plurality of in-situ circulation repair devices 1 for the river and the lake and a water pump 301 positioned in the middle of a river and lake oxygen deficiency area 2, as shown in fig. 4 and 5, wherein the river and lake dead water specifically refers to the river and lake dead water at the broken end position of a broken end river or a broken end lake; as shown in fig. 1-3, the in-situ circulation repairing device 1 for a river and a lake comprises a column platform 101, a hollow column 102 and a micro-nano bubble generator 1031, wherein the column platform 101 is positioned above the water surface 5 of the river and the lake dead water or near the river and lake bank slope, the bottom surface is fixedly connected with the top end of the hollow column 102, the bottom end of the hollow column 102 is fixed in the bottom mud 401 of the river and lake, a plurality of micro-nano bubble injection holes 1021 which are positioned below the water surface 5 and are connected with the outlet of the micro-nano bubble generator 1031 are distributed on the hollow column 102, micro-nano bubbles injected by the micro-nano bubble injection holes 1021 diffuse into water to form a micro-nano bubble radiation area 104, and a water pump 301 is used for injecting a water column 105 above the column platform 101 through a corresponding water pipe 302, so that the water column 105 falls onto the top surface of the column platform 101 and is reflected to form a water curtain 106, and the water inlet boundary line of the water curtain 106 is positioned within the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area 104.
In the invention, a plurality of water pumps 301 with the same number as the river and lake in-situ circulation repairing device 1 can be arranged in the middle of the river and lake oxygen deficiency area 2, water bodies in the river and lake oxygen deficiency area 2 are extracted through the corresponding water pumps 301, and water columns 105 are sprayed above upright post platforms 101 of the corresponding river and lake in-situ circulation repairing device 1; or a plurality of water pumps 301 with the number smaller than that of the river and lake in-situ circulation repairing devices 1 are arranged in the middle of the river and lake oxygen deficiency area 2, water bodies in the river and lake oxygen deficiency area 2 are pumped by the water pumps 301, and water columns 105 are sprayed above the upright post platforms 101 of the river and lake in-situ circulation repairing devices 1.
The invention aims at one of the river and lake in-situ circulation repairing device 1, a micro-nano bubble generator 1031 is started, micro-nano bubbles are sprayed out through micro-nano bubble spraying holes 1021, and are diffused into water to form a micro-nano bubble radiation area 104, when the micro-nano bubble generator 1031 works for a period of time, a water pump 301 is started, the water pump 301 sprays a water column 105 to the upper part of a column platform 101 through a water pipe 302, the water column 105 falls onto the top surface of the column platform 101 and is reflected to form a water curtain 106, the water curtain 106 enters water to carry micro-nano bubbles to extend out of the micro-nano bubble radiation area 104 under the action of spraying pressure, so that dead water of the river and lake or water close to a river and lake bank slope circularly flows, dissolved oxygen in the water is increased, and because the water pump 301 is positioned in a river and lake oxygen loss area 2, the formed water curtain 106 is derived from the water body of the river and lake oxygen loss area 2, the water body in the river and lake oxygen deficiency area 2 can further carry micro-nano bubbles to extend to the micro-nano bubble radiation area 104 under the action of the jet pressure, the water body in the river and lake oxygen deficiency area 2 is ensured to flow to the periphery by carrying the micro-nano bubbles, the water body is fully circulated, the large circulation of the oxygen is formed, and the river and lake water body in-situ circulation restoration device 1 is a plurality of water bodies which are distributed at the position of the dead water of the river and the lake or near the bank slope of the river and lake, so that the plurality of water bodies in-situ circulation restoration devices 1 can work simultaneously, the dead water of the river and the lake or the water body near the bank slope of the river and lake can sufficiently circulate, and the dissolved oxygen in the water can be further increased, so that the problems of high eutrophication degree, blackening and stinking of the lake or the broken river with poor connectivity of the river and the lake can be solved.
In one embodiment, the upright post platform 101 is circular and horizontally arranged, the hollow upright post 102 is cylindrical and vertically arranged, the hollow upright post 102 is made of corrosion-resistant plastic, the top end of the hollow upright post 102 is fixedly connected with the middle part of the bottom surface of the upright post platform 101, the central line of the tail part of the water pipe 302 is vertical and coincides with the central line of the upright post platform 101, so that the water column 105 vertically falls to the middle part of the top surface of the upright post platform 101 and is reflected to form a hemispherical water curtain 106, as shown in fig. 1-2. The hemispherical water curtain 106 is completely positioned in the micro-nano bubble radiation area 104 and covers most of the micro-nano bubble radiation area 104 so as to ensure the concentration of micro-nano bubbles, prevent the micro-nano bubbles from overflowing the water surface 5 to dissipate and break, and further fully increase the dissolved oxygen in the water.
In one embodiment, the diameter of the column platform 101 is controlled to be 20-40cm, preferably the diameter of the column platform 101 is 20cm, the tail diameter of the water pipe 302 is 30-60% of the diameter of the column platform 101, preferably the tail diameter of the water pipe 302 is 6cm, the pressure of the water column 105 sprayed out of the tail end of the water pipe 302 is controlled to be 0.4-1MPa, preferably the pressure of the water column 105 sprayed out of the tail end of the water pipe 302 is 0.5MPa, the vertical distance between the column platform 101 and the water surface 5 is controlled to be 20-30cm, preferably the vertical distance between the column platform 101 and the water surface 5 is 20cm, the water inlet boundary line of the water curtain 106 is positioned 5-20cm inwards of the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area 104, preferably the water inlet boundary line of the water curtain 106 is positioned 10cm inwards of the water surface micro-nano bubble ablation boundary line of the micro-nano bubble radiation area 104.
In one embodiment, each micro-nano bubble injection hole 1021 is connected with an outlet of a micro-nano bubble generator 1031 through a corresponding pipeline 1032, and each pipeline 1032 is provided with a switch valve and a pressure regulating valve, wherein the pressure regulating valve is used for regulating the injection pressure of water entering the corresponding micro-nano bubble injection hole 1021, the injection pressure is controlled to be 0.5-1MPa, and the micro-nano bubble generator 1031 is arranged at a bank 6 of a river and a lake, as shown in fig. 3.
In one embodiment, the micro-nano bubble injection holes 1021 are uniformly distributed on the hollow upright 102 under the water surface 5 in a staggered manner, the vertical distance between the center of the lowest micro-nano bubble injection hole 1021 and the top surface of the sediment stabilizing area 402 formed around the sediment 401 is controlled to be 20-30cm, preferably, the vertical distance between the center of the lowest micro-nano bubble injection hole 1021 and the top surface of the sediment stabilizing area 402 is controlled to be 20cm, so as to slow down disturbance of the sediment 401 caused by micro-nano bubble injection, the distance between the centers of adjacent micro-nano bubble injection holes 1021 centered on the same vertical line is controlled to be 10-30cm, preferably, the distance between the centers of adjacent micro-nano bubble injection holes 1021 centered on the same vertical line is controlled to be 10cm, the angle of the arc formed by the center line of adjacent micro-nano bubble injection holes 1021 centered on the same horizontal plane is controlled to be 60-90 °, and preferably, the angle of the arc formed by the center line of adjacent micro-nano bubble injection holes 1021 centered on the same horizontal plane is controlled to be 60 °. For the sediment stabilizing area 402, waterweeds can be planted in the sediment 401 to stabilize the sediment 401, or after the in-situ circulation repairing device 1 for rivers and lakes is equipped, the formation of a ferro-manganese oxide thin layer is promoted by utilizing the ferro-manganese element in the sediment 401 to stabilize the sediment 401. The invention adopts the characteristics of water grass aerobic or the characteristic that the ferro-manganese element in the sediment 401 is easy to form ferro-manganese oxide under the aerobic condition, and oxygen is supplied through micro-nano bubbles so as to change the anaerobic area of the water body at the sediment 401, stabilize the sediment 401 and gradually improve the upturning condition of the sediment 401.
In one embodiment, the edge of the micro-nano bubble radiation area 104 forms a transition area 107, and the transition area 107 is used for carrying micro-nano bubbles to extend under the action of the spraying pressure when the water curtain 106 is filled with water, as shown in fig. 1-2.
The in-situ circulation repair method for the river and the lake adopts the in-situ circulation repair system for the river and the lake, and comprises the following steps:
s1, starting a micro-nano bubble generator 1031 aiming at one of the river and lake in-situ circulation repairing device 1, firstly spraying micro-nano bubbles through micro-nano bubble spraying holes 1021 in the middle of a hollow upright post 102 under a water surface 5 and operating for 10-20 minutes, then spraying micro-nano bubbles through micro-nano bubble spraying holes 1021 in other positions of the hollow upright post 102 under the water surface 5 and operating for 10-20 minutes, and diffusing the micro-nano bubbles into the water and forming a micro-nano bubble radiation area 104;
s2, when the micro-nano bubble generator 1031 works for a period of time, starting the water pump 301, and spraying the water column 105 above the upright post platform 101 by the water pump 301 through the water pipe 302, so that the water column 105 falls onto the top surface of the upright post platform 101 and is reflected to form the water curtain 106, and the water curtain 106 is filled with water to carry micro-nano bubbles to extend to the transition area 107 under the action of spraying pressure, so that the dead water of the river or the water body close to the bank slope of the river or the lake circularly flows, and the dissolved oxygen in the water is increased;
s3, the ferro-manganese element in the sediment 401 forms a ferro-manganese oxide thin layer under the condition of micro-nano bubble oxygen supply so as to stabilize the sediment 401.
The river and lake in-situ circulation restoration system can be designed in combination with river and lake landscapes to carry out landscape facility construction, and has low overall operation cost and good economical efficiency, and large-scale electric equipment is not needed.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. A river and lake in-situ circulation repair system is characterized in that: the system comprises a plurality of in-situ circulation restoration devices (1) for rivers and lakes and a water pump (301) positioned in a river and lake oxygen deficiency area (2); river lake normal position circulation prosthetic devices (1) include stand platform (101), cavity stand (102) and micro-nano bubble generator (1031), stand platform (101) are in river lake stagnant water or are close to river lake bank slope's surface of water (5) top position department and bottom surface and cavity stand (102) top fixed connection, cavity stand (102) bottom is fixed in mud (401) of river lake, it has a plurality of micro-nano bubble jet orifices (1021) that are in surface of water (5) and are connected with micro-nano bubble generator (1031) exit linkage to distribute on cavity stand (102), each micro-nano bubble jet orifice (1021) spun micro-nano bubble diffuses to the aquatic and forms micro-nano bubble radiation zone (104), water pump (301) are used for spraying water column (105) to stand platform (101) top through corresponding water pipe (302), make water column (105) drop on stand platform (101) top surface and reflection form water curtain boundary line (106), and the water curtain (106) income water is in micro-nano bubble radiation zone (104).
2. The in-situ circulation repair system of a river or lake of claim 1, wherein: the upright post platform (101) is circular and horizontally arranged, the hollow upright post (102) is cylindrical and vertically arranged, and the top end of the hollow upright post (102) is fixedly connected with the middle part of the bottom surface of the upright post platform (101).
3. A system for in situ cyclic repair of a river or lake according to claim 2, wherein: the central line of the tail of the water pipe (302) is vertical and coincides with the central line of the upright post platform (101), so that the water column (105) vertically falls to the middle part of the top surface of the upright post platform (101) and is reflected to form a hemispherical water curtain (106).
4. A river and lake in-situ circulation repair system according to claim 3, wherein: the diameter of the upright post platform (101) is controlled to be 20-40cm, the diameter of the tail part of the water pipe (302) is 30-60% of the diameter of the upright post platform (101), the pressure of a water column (105) sprayed out from the tail end of the water pipe (302) is controlled to be 0.4-1MPa, and the vertical distance between the upright post platform (101) and the water surface (5) is controlled to be 20-30cm.
5. A river and lake in-situ circulation repair system according to claim 3, wherein: the boundary line of the water curtain (106) is positioned at the position 5 cm to 20cm inward of the boundary line of the micro-nano bubble ablation on the water surface of the micro-nano bubble radiation area (104).
6. A system for in situ cyclic repair of a river or lake according to claim 2, wherein: each micro-nano bubble jet hole (1021) is connected with an outlet of the micro-nano bubble generator (1031) through a corresponding pipeline (1032), each pipeline (1032) is provided with a switch valve and a pressure regulating valve, the pressure regulating valve is used for regulating the jet pressure of water entering the corresponding micro-nano bubble jet hole (1021), and the jet pressure is controlled to be 0.5-1MPa.
7. A system for in situ cyclic repair of a river or lake according to claim 2, wherein: the micro-nano bubble jet holes (1021) are uniformly and alternately distributed on the hollow upright posts (102) under the water surface (5), the vertical distance between the center of the lowest micro-nano bubble jet hole (1021) and the top surface of a bottom mud stabilizing area (402) formed around the bottom mud (401) is controlled to be 20-30cm, the distance between the centers of adjacent micro-nano bubble jet holes (1021) on the same vertical line at the center is controlled to be 10-30cm, and the angle of an arc formed by the central connecting line of the adjacent micro-nano bubble jet holes (1021) on the same horizontal plane at the center is controlled to be 60-90 degrees.
8. A system for in situ cyclic repair of a river or lake according to claim 2, wherein: the periphery of the micro-nano bubble radiation area (104) forms a transition area (107), and the transition area (107) is used for carrying micro-nano bubbles to extend under the action of jet pressure when the water curtain (106) is put into water.
9. A method for repairing in-situ circulation of a river and a lake by adopting the in-situ circulation repairing system of the river and the lake as claimed in any one of claims 2 to 8, which is characterized by comprising the following steps:
s1, aiming at one of the river and lake in-situ circulation repairing devices (1), starting a micro-nano bubble generator (1031) and spraying micro-nano bubbles through each micro-nano bubble spraying hole (1021), wherein the micro-nano bubbles diffuse into water and form a micro-nano bubble radiation area (104);
s2, when the micro-nano bubble generator (1031) works for a period of time, starting a water pump (301), wherein the water pump (301) sprays water columns (105) above the upright post platform (101) through a water pipe (302), so that the water columns (105) fall on the top surface of the upright post platform (101) and are reflected to form a water curtain (106), and the water curtain (106) carries micro-nano bubbles to extend out of a micro-nano bubble radiation area (104) under the action of spraying pressure, so that dead water of a river, a lake or a water body close to a bank slope of the river, the lake circularly flows, and dissolved oxygen in the water is increased;
s3, the ferro-manganese element in the sediment 401 forms a ferro-manganese oxide thin layer under the condition of micro-nano bubble oxygen supply so as to stabilize the sediment 401.
10. The method for in-situ cyclic repair of rivers and lakes according to claim 9, wherein the step S1 is specifically: for one of the river and lake in-situ circulation repairing device (1), starting the micro-nano bubble generator (1031), spraying micro-nano bubbles through micro-nano bubble spraying holes (1021) at the middle part of the hollow upright post (102) under the water surface (5) for a period of time, and then spraying micro-nano bubbles through micro-nano bubble spraying holes (1021) at other positions of the hollow upright post (102) under the water surface (5) for a period of time, wherein the micro-nano bubbles diffuse into the water and form a micro-nano bubble radiation area (104).
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