CN113354190A - Ecological restoration device capable of enhancing submerged flow exchange of black and odorous water river - Google Patents
Ecological restoration device capable of enhancing submerged flow exchange of black and odorous water river Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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Abstract
The invention discloses an ecological restoration device capable of enhancing undercurrent exchange of a black and odorous water body river channel, which comprises an undercurrent box, an ecological floating disc and an aeration component, wherein the ecological floating disc is arranged on the ecological floating disc; porous mesh plates are arranged at the front end and the rear end of the undercurrent box, net cages are uniformly arranged at the bottom in the undercurrent box, and filter media are filled in the net cages; the ecological floating disc is movably inserted with the porous net plate through a sliding guide rod, an emergent aquatic plant planting groove is arranged on the ecological floating disc, a filler cylinder and a suspension bracket are arranged at the lower end of the ecological floating disc, water permeable holes are arranged on the side wall of the filler cylinder, a porous partition plate and biological fillers are arranged inside the filler cylinder, and a submerged plant planting box is arranged on the suspension bracket; the aeration component comprises an aerator and an aeration disc, the aerator is arranged on the ecological floating disc, the aeration disc is movably clamped with the sliding guide rod, the aeration disc is connected with the aerator, and an aeration nozzle is arranged on the aeration disc; the invention has reasonable structural design, remarkable treatment effect on the strong black and odorous water body riverway and suitability for mass popularization.
Description
Technical Field
The invention relates to the technical field of river restoration and treatment, in particular to an ecological restoration device capable of enhancing the underflow exchange of a black and odorous water river.
Background
In many cities in China, organic pollution of river channels is ubiquitous and increasingly prominent, urban sewage directly flows into the river channels, the river reach in cities and towns is seriously polluted, and seasonal or perennial black and odorous water is an urgent water environment problem to be solved in the urban river pollution problem in China. The so-called black odor is an extreme phenomenon of organic pollution and is caused by the oxygen deficiency of water and the putrefaction of organic matters. The black and odorous state is an extreme state of the water body, and the characteristics of the black and odorous state are greatly different from other states. The physical and chemical environment of the ecological floating bed is expressed as strong reducing property, the organic and inorganic pollution is extremely serious, the water body has peculiar smell and is not suitable for the survival of aquatic organisms, the aquatic vegetation is degraded and even died, and the phytoplankton, the zooplankton and the benthonic animal only have a small amount of pollution-resistant seeds. Food chain breakage, food net support breakage, serious unbalance of an ecological system structure and serious degradation and even loss of functions.
The subsurface zone is a natural bioreactor that can treat streams of non-point source pollution, with riverbed and riparian sediments providing redox conditions, contact between solutes and microorganisms, and longer residence times. This dynamic environment provides conditions for many important biochemical reactions, reducing excess pollutants in surface runoff, and is therefore called river liver; the subsurface zone is a layer of water-saturated sediment located below the stream or river bed and extending to the riparian zone where groundwater and surface water intermix and the subsurface zone is the interface of the interaction of river surface water and groundwater. The underflow zone forms underflow exchange through the exchange of substances and energy of river surface water and underground water, plays an irreplaceable role in maintaining the stability of a river ecosystem, and is ignored in the river control of China. The undercurrent exchange has the functions of improving the living environment, accelerating nutrient substance circulation, buffering pollution, regulating river water temperature and the like, and the reinforcement of the undercurrent exchange near the river channel has important significance for improving the surrounding environment.
However, the existing treatment means for the black and odorous water river mainly tend to reduce the storm flow and neglect the reduction of pollutants; meanwhile, the mainstream techniques for treating the polluted river include physical methods such as artificial aeration and sediment dredging, and although the methods can achieve a good pollution treatment effect in a short time, the treatment effect is usually unsatisfactory due to the large influence of external environmental factors.
Disclosure of Invention
Aiming at the technical problems, the invention provides the ecological restoration device which is safe and environment-friendly and can enhance the undercurrent exchange of the black and odorous water body river channel.
The technical scheme of the invention is as follows: an ecological restoration device capable of enhancing the undercurrent exchange of a black and odorous water body river channel comprises an undercurrent box, an ecological floating disc and an aeration component; the subsurface flow box is of a cubic structure with an opening at the upper end, and porous screen plates are arranged at the front end and the rear end of the subsurface flow box; 2-4 net cages are uniformly distributed at the bottom in the undercurrent box, and a filter medium is filled in each net cage;
the ecological floating disc is positioned at the upper end of the undercurrent box, two sides of the lower end of the ecological floating disc are movably inserted with the two porous net plates through sliding guide rods respectively, a plurality of emergent aquatic plant planting grooves are uniformly distributed at the upper end of the ecological floating disc and penetrate through the ecological floating disc, a first soil blocking net is arranged at the bottom in each emergent aquatic plant planting groove, a plurality of packing cylinders and hanging frames are uniformly distributed at the lower end of the ecological floating disc, the packing cylinders and the hanging frames are respectively arranged at intervals with the planting grooves, the packing cylinders are distributed annularly, the upper end and the lower end of each packing cylinder are closed, a plurality of water permeable holes are uniformly distributed on the side wall, 2-4 porous partition plates are uniformly distributed in each packing cylinder, and biological fillers are filled in an area between every two adjacent porous partition plates; the suspension brackets are positioned inside the annularly distributed packing cylinders, and each suspension bracket is provided with 2-4 submerged plant planting boxes;
the aeration component comprises an aeration machine and an aeration disc, the aeration machine is arranged on the upper end face of the ecological floating disc, the aeration disc is movably clamped with the sliding guide rod through a sliding sleeve, the aeration disc is connected with the aeration machine through a connecting hose, and a plurality of aeration nozzles are uniformly distributed on the upper end face of the aeration disc.
Further, still include the controller, controller and aeration machine electric connection set up oxygen concentration sensor on the aeration dish, oxygen concentration sensor and controller electric connection, through setting up controller and oxygen concentration sensor, dissolved oxygen concentration in can the real-time supervision water, and then control the operating time of aeration machine, both guaranteed aerobic microorganism's normal growth, avoided again in the water dissolved oxygen concentration too high to lead to on the filler adnexed microorganism to drop and cause secondary pollution to the water.
Furthermore, the both sides of two porous otter boards all are provided with movable draw-in groove, and the activity is pegged graft in the activity joint has telescopic baffle, through setting up telescopic baffle, can avoid rivers to flow away through undercurrent case for black and odorous river course rivers can both be handled through the inside filter media of box with a net, have improved black and odorous river course treatment effect.
Further, the upper end of each packing cylinder is fixedly connected with the lower end face of the ecological floating disc, a rotating rod is arranged inside each packing cylinder, the lower end of the rotating rod is connected with the bottom in the packing cylinder in a rotating mode, the upper end of the rotating rod sequentially penetrates through each porous partition plate and the packing cylinder and then is connected with the lower end face of the ecological floating disc in a rotating mode, 4-8 connecting blocks are arranged in the circumferential direction of each porous partition plate, each connecting block all penetrates through the packing cylinder and is provided with a floating plate, a rotating groove is formed in the joint of each connecting block and the packing cylinder, when the floating plate is impacted by water flow, the porous partition plates and the rotating rod are driven to rotate, the biological filler filled inside the packing cylinder is fully contacted with sewage, and the mold hanging effect of microorganisms is improved.
Further, be provided with the benthophyte on the benthophyte planting case and plant the groove, the benthophyte plants the groove and runs through the benthophyte and plants the case, and the benthophyte plants the inslot bottom and is provided with second fender soil net, plants groove and second fender soil plate through setting up the benthophyte, is favorable to promoting the growth of benthophyte to utilize the benthophyte to fully absorb pollutants such as nitrogen phosphorus in the river sewage.
Furthermore, the bottom of the underflow box is provided with a fixed anchor cone, so that the displacement of the underflow box caused by rainstorm scouring can be avoided by the arrangement of the fixed anchor cone, and the stability of the underflow box is improved.
Furthermore, the net cage is formed by movably splicing 2-4 net barrels, and the height of the net cage can be conveniently adjusted by arranging the net cage formed by movably splicing 2-4 net barrels, so that the filling amount of a filter medium in the net cage can be conveniently controlled, and the submerged flow exchange effect of the strong black and odorous water river is improved.
Furthermore, 3 net cages are arranged, first filter media are filled in the net cages positioned on two sides of the bottom in the undercurrent box, second filter media are filled in the net cages positioned in the middle of the bottom in the undercurrent box, the porosity of the second filter media is greater than that of the first filter media, biochar particles are filled in gaps between the net cages and the inner wall of the undercurrent box, the undercurrent exchange effect of the water body can be promoted by using the filter media with different porosities, and the treatment effect of the black and odorous water body is further improved.
Furthermore, limiting slots corresponding to the number of the net cages are arranged at the bottom in the undercurrent box, each net cage is movably clamped in each limiting slot, and the limiting slots are arranged at the bottom in the undercurrent box, so that each net cage can always keep a certain gap, and the undercurrent effect of a water body is prevented from being influenced after the adjacent net cages are attached.
The working principle of the invention is as follows:
s1, excavating a foundation pit with the length, width and height equal to those of the undercurrent box in the area to be treated of the water body of the black and odorous river channel, hoisting the undercurrent box into the foundation pit by using hoisting equipment, movably inserting telescopic baffles into the movable clamping grooves of the two porous net plates, and blocking a gap between the undercurrent box and a river bank by using the telescopic baffles;
s2, respectively inserting net cages into 3 limiting slots at the bottom in the undercurrent box, respectively filling filter media with different porosities into the 3 net cages, and simultaneously filling biochar particles into gaps between the net cages and the inner wall of the undercurrent box;
s3, planting water-cut plants in emergent aquatic plant planting grooves on the ecological floating plate, planting submerged plants in submerged plant planting grooves on a submerged plant planting box, connecting an aerator with an external power supply, and spraying gas generated by the aerator into black and odorous water from an aeration nozzle after entering the aeration plate;
s4, enabling sewage from an upstream of a river channel to pass through the porous mesh plates on one side, then sequentially passing through the filter media filled in the net cages, and finally flowing out of the porous mesh plates on the other side, and promoting downward flow of the black and odorous water body on the upper layer and upward flow of the black and odorous water body on the lower layer by utilizing the filter media with different porosities in the net cages, so that the submerged flow exchange of the black and odorous water body is promoted;
s5, absorbing pollutants in the water body by emergent aquatic plants and submerged plants, and simultaneously adsorbing microorganisms in the water body by the biological filler filled in the filler cylinder to form a microbial film to adsorb and degrade organic matters in the water body so as to achieve the purpose of treating black and odorous water body; meanwhile, when the water level of the river channel changes, the ecological floating plate continuously rises or falls under the action of the sliding guide rod.
Compared with the prior art, the invention has the beneficial effects that:
1. the ecological floating island and the underflow zone are used for treating the water body of the black and odorous river channel, so that the removal rate of COD and BOD in the water body can be effectively improved, and the removal capacity of the device for nitrogen, phosphorus and other pollutants is improved;
2. according to the invention, the undercurrent box is innovatively filled with the filter media with different porosities, so that the undercurrent exchange effect of the black and odorous water body is improved, favorable conditions for the growth and attachment of microorganisms are created when sewage passes through the undercurrent box, various pollutants in the water body can be fully reacted and degraded, and the pollution load of the received water body is reduced;
3. the device provided by the invention is used for repairing and treating the black and odorous water river, so that the biological diversity and the ecological diversity of the undercurrent area can be effectively improved, and the healthy and stable development of the ecological system of the undercurrent area is promoted; the ecological problems of water pollution degradation, weak river water self-purification capacity, sharp reduction of biological diversity and the like in the undercurrent area are effectively solved, and a feasible and effective ecological restoration direction is provided for natural restoration and reconstruction of the undercurrent area.
Drawings
FIG. 1 is a longitudinal section of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic view of the net cage of the present invention in a submerged flow box;
fig. 4 is a schematic structural view of the net cage of the present invention;
FIG. 5 is a distribution diagram of the packing cartridge and hanger of the present invention on an ecological floating plate;
FIG. 6 is a schematic structural view of the packing cartridge of the present invention;
FIG. 7 is a schematic view of the connection of the porous partition of the present invention to a packing cartridge;
FIG. 8 is a schematic view showing the connection of the submerged plant cultivating box of the present invention to a hanger;
the device comprises a 1-undercurrent box, a 10-porous net plate, a 100-movable clamping groove, a 101-telescopic baffle, an 11-limiting slot, a 12-net cage, a 120-net barrel, a 13-fixed anchor cone, a 2-ecological floating disc, a 20-sliding guide rod, a 21-emergent aquatic plant planting groove, a 210-first soil retaining net, a 22-filler barrel, a 220-porous partition plate, a 221-rotating rod, a 222-connecting block, a 223-floating plate, a 224-rotating groove, a 23-suspension frame, a 230-submerged plant planting box, a 231-submerged plant planting groove, a 232-second soil retaining net, a 3-aeration component, a 30-aerator, a 31-aeration disc, a 310-sliding sleeve and a 311-aeration nozzle.
Detailed Description
Example 1: as shown in fig. 1, 2 and 3, the ecological restoration device capable of enhancing the submerged flow exchange of the black and odorous water riverway comprises a submerged flow box 1, an ecological floating disc 2, an aeration component 3 and a controller; the subsurface flow box 1 is of a cubic structure with an opening at the upper end, and porous screen plates 10 are arranged at the front end and the rear end of the subsurface flow box 1; 3 net cages 12 are uniformly distributed at the bottom in the undercurrent box 1, and a filter medium is filled in each net cage 12;
as shown in fig. 1, 5, 6, 7 and 8, an ecological floating disc 2 is positioned at the upper end of an undercurrent box 1, two sides of the lower end of the ecological floating disc 2 are movably inserted with two porous net plates 10 through sliding guide rods 20 respectively, a plurality of emergent aquatic plant planting grooves 21 are uniformly distributed at the upper end of the ecological floating disc 2, the emergent aquatic plant planting grooves 21 penetrate through the ecological floating disc 2, a first soil-blocking net 210 is arranged at the bottom in each emergent aquatic plant planting groove 21, a plurality of packing cylinders 22 and suspension frames 23 are uniformly distributed at the lower end of the ecological floating disc 2, the packing cylinders 22 and the suspension frames 23 are respectively arranged at intervals with the planting grooves 21, the packing cylinders 22 are annularly distributed, the upper ends and the lower ends of the packing cylinders 22 are closed, a plurality of water permeable holes are uniformly distributed on the side wall, 3 porous partition plates 220 are uniformly distributed in the packing cylinders 22, and biological fillers are filled in the area between two adjacent porous partition plates 220; the suspension brackets 23 are positioned inside the annularly distributed packing cylinders 22, and each suspension bracket 23 is provided with 3 submerged plant planting boxes 230; the upper end of each packing cylinder 22 is fixedly connected with the lower end face of the ecological floating disc 2, a rotating rod 221 is arranged in each packing cylinder 22, the lower end of the rotating rod 221 is rotatably clamped with the bottom in the packing cylinder 22, the upper end of the rotating rod 221 sequentially penetrates through each porous partition plate 220 and the packing cylinder 22 and then is rotatably clamped with the lower end face of the ecological floating disc 2, 5 connecting blocks 222 are arranged in the circumferential direction of each porous partition plate 220, each connecting block 222 penetrates through the packing cylinder 22 and is provided with a floating plate 223, a rotating groove 224 is formed at the joint of each connecting block 222 and the packing cylinder 22, when the floating plate 223 is impacted by water flow, the porous partition plates 220 and the rotating rod 221 are driven to rotate, so that biological packing filled in the packing cylinder 22 is fully contacted with sewage, and the mold hanging effect of microorganisms is improved; the submerged plant planting tank 231 is arranged on the submerged plant planting tank 230, the submerged plant planting tank 231 penetrates through the submerged plant planting tank 230, the second soil retaining net 232 is arranged at the bottom in the submerged plant planting tank 231, the submerged plant planting tank 231 and the second soil retaining plate 232 are arranged, the submerged plant growth is facilitated, and therefore pollutants such as nitrogen, phosphorus and the like in river sewage are fully absorbed by the submerged plant;
as shown in fig. 1 and 2, the aeration assembly 3 comprises an aerator 30 and an aeration disc 31, the aerator 30 is arranged on the upper end surface of the ecological floating disc 2, the aeration disc 31 is movably clamped with the sliding guide rod 20 through a sliding sleeve 310, the aeration disc 31 is connected with the aerator 30 through a connecting hose, and a plurality of aeration nozzles 311 are uniformly distributed on the upper end surface of the aeration disc 31; an oxygen concentration sensor is arranged on the aeration disc 31; the controller is electrically connected with the aerator 30 and the oxygen concentration sensor, and the oxygen concentration sensor is arranged, so that the dissolved oxygen concentration in the water body can be monitored in real time, and the running time of the aerator is controlled, thereby not only ensuring the normal growth of aerobic microorganisms, but also avoiding the secondary pollution to the water body caused by the shedding of microorganisms attached to the filler due to the overhigh concentration of the dissolved oxygen in the water body; the controller, aerator 30 and oxygen concentration sensor are all commercially available products.
Example 2: as shown in fig. 1, 2, 3 and 4, the ecological restoration device capable of enhancing the submerged flow exchange of the black and odorous water body riverway comprises a submerged flow box 1, an ecological floating disc 2 and an aeration component 3; the subsurface flow box 1 is of a cubic structure with an opening at the upper end, and porous screen plates 10 are arranged at the front end and the rear end of the subsurface flow box 1; 3 net cages 12 are uniformly distributed at the bottom in the undercurrent box 1, and a filter medium is filled in each net cage 12; the bottom of the undercurrent box 1 is provided with the fixed anchor cone 13, and the fixed anchor cone 13 can prevent the undercurrent box 1 from shifting when being washed by rainstorm, so that the stability of the undercurrent box 1 is improved; the net cage 12 is formed by movably splicing 3 net cylinders 120, and the height of the net cage 12 can be conveniently adjusted by arranging the net cage 12 formed by movably splicing 3 net cylinders 120, so that the filling amount of a filter medium in the net cage 12 can be conveniently controlled, and the submerged flow exchange effect of the strong black and odorous water river is improved; the net cages 12 positioned on two sides of the bottom in the undercurrent box 1 are filled with first filter media, the net cages 12 positioned in the middle of the bottom in the undercurrent box 1 are filled with second filter media, the porosity of the second filter media is greater than that of the first filter media, and the gaps between the net cages 12 and the inner wall of the undercurrent box 1 are filled with charcoal particles, so that the undercurrent exchange effect of the water body can be promoted by using the filter media with different porosities, and the treatment effect of the black and odorous water body is further improved; the bottom in the undercurrent box 1 is provided with limiting slots 11 with the number corresponding to that of the net cages 12, each net cage 12 is movably clamped in each limiting slot 11, and the limiting slots 11 are arranged at the bottom in the undercurrent box 1, so that each net cage 12 can always keep a certain gap, and the undercurrent effect of a water body is prevented from being influenced after the adjacent net cages 12 are attached;
as shown in fig. 1, 5, 6, 7 and 8, an ecological floating disc 2 is positioned at the upper end of an undercurrent box 1, two sides of the lower end of the ecological floating disc 2 are movably inserted with two porous net plates 10 through sliding guide rods 20 respectively, a plurality of emergent aquatic plant planting grooves 21 are uniformly distributed at the upper end of the ecological floating disc 2, the emergent aquatic plant planting grooves 21 penetrate through the ecological floating disc 2, a first soil-blocking net 210 is arranged at the bottom in each emergent aquatic plant planting groove 21, a plurality of packing cylinders 22 and suspension frames 23 are uniformly distributed at the lower end of the ecological floating disc 2, the packing cylinders 22 and the suspension frames 23 are respectively arranged at intervals with the planting grooves 21, the packing cylinders 22 are annularly distributed, the upper ends and the lower ends of the packing cylinders 22 are closed, a plurality of water permeable holes are uniformly distributed on the side wall, 3 porous partition plates 220 are uniformly distributed in the packing cylinders 22, and biological fillers are filled in the area between two adjacent porous partition plates 220; the suspension brackets 23 are positioned inside the annularly distributed packing cylinders 22, and each suspension bracket 23 is provided with 3 submerged plant planting boxes 230; the upper end of each packing cylinder 22 is fixedly connected with the lower end face of the ecological floating disc 2, a rotating rod 221 is arranged in each packing cylinder 22, the lower end of the rotating rod 221 is rotatably clamped with the bottom in the packing cylinder 22, the upper end of the rotating rod 221 sequentially penetrates through each porous partition plate 220 and the packing cylinder 22 and then is rotatably clamped with the lower end face of the ecological floating disc 2, 5 connecting blocks 222 are arranged in the circumferential direction of each porous partition plate 220, each connecting block 222 penetrates through the packing cylinder 22 and is provided with a floating plate 223, a rotating groove 224 is formed at the joint of each connecting block 222 and the packing cylinder 22, when the floating plate 223 is impacted by water flow, the porous partition plates 220 and the rotating rod 221 are driven to rotate, so that biological packing filled in the packing cylinder 22 is fully contacted with sewage, and the mold hanging effect of microorganisms is improved; the submerged plant planting tank 231 is arranged on the submerged plant planting tank 230, the submerged plant planting tank 231 penetrates through the submerged plant planting tank 230, the second soil retaining net 232 is arranged at the bottom in the submerged plant planting tank 231, the submerged plant planting tank 231 and the second soil retaining plate 232 are arranged, the submerged plant growth is facilitated, and therefore pollutants such as nitrogen, phosphorus and the like in river sewage are fully absorbed by the submerged plant;
as shown in fig. 1 and 2, the aeration assembly 3 includes an aerator 30 and an aeration disc 31, the aerator 30 is disposed on the upper end surface of the ecological floating disc 2, the aeration disc 31 is movably clamped with the sliding guide rod 20 through a sliding sleeve 310, the aeration disc 31 is connected with the aerator 30 through a connecting hose, a plurality of aeration nozzles 311 are uniformly distributed on the upper end surface of the aeration disc 31, and the aerator 30 is a commercially available product and is powered by an external power supply.
Example 3: as shown in fig. 1, 2, 3 and 4, the ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river comprises an underflow box 1, an ecological floating plate 2, an aeration assembly 3 and a controller; the submerged flow box 1 is of a cubic structure with an opening at the upper end, the front end and the rear end of the submerged flow box 1 are both provided with the porous screen plates 10, two sides of each of the two porous screen plates 10 are both provided with the movable clamping grooves 100, the movable clamping grooves 100 are movably inserted with the telescopic baffles 101, and by arranging the telescopic baffles 101, water flow can be prevented from flowing away through the submerged flow box 1, so that the water flow of the black and odorous river channel can be treated by the filter medium in the net cage 12, and the treatment effect of the black and odorous river channel is improved; 3 net cages 12 are uniformly distributed at the bottom in the undercurrent box 1, and a filter medium is filled in each net cage 12; the net cage 12 is formed by movably splicing 3 net cylinders 120, and the height of the net cage 12 can be conveniently adjusted by arranging the net cage 12 formed by movably splicing 3 net cylinders 120, so that the filling amount of a filter medium in the net cage 12 can be conveniently controlled, and the submerged flow exchange effect of the strong black and odorous water river is improved; the net cages 12 positioned on two sides of the bottom in the undercurrent box 1 are filled with first filter media, the net cages 12 positioned in the middle of the bottom in the undercurrent box 1 are filled with second filter media, the porosity of the second filter media is greater than that of the first filter media, and the gaps between the net cages 12 and the inner wall of the undercurrent box 1 are filled with charcoal particles, so that the undercurrent exchange effect of the water body can be promoted by using the filter media with different porosities, and the treatment effect of the black and odorous water body is further improved; the bottom in the undercurrent box 1 is provided with limiting slots 11 with the number corresponding to that of the net cages 12, each net cage 12 is movably clamped in each limiting slot 11, and the limiting slots 11 are arranged at the bottom in the undercurrent box 1, so that each net cage 12 can always keep a certain gap, and the undercurrent effect of a water body is prevented from being influenced after the adjacent net cages 12 are attached; the bottom of the undercurrent box 1 is provided with the fixed anchor cone 13, and the fixed anchor cone 13 can prevent the undercurrent box 1 from shifting when being washed by rainstorm, so that the stability of the undercurrent box 1 is improved;
as shown in fig. 1, 5, 6, 7 and 8, an ecological floating disc 2 is positioned at the upper end of an undercurrent box 1, two sides of the lower end of the ecological floating disc 2 are movably inserted with two porous net plates 10 through sliding guide rods 20 respectively, a plurality of emergent aquatic plant planting grooves 21 are uniformly distributed at the upper end of the ecological floating disc 2, the emergent aquatic plant planting grooves 21 penetrate through the ecological floating disc 2, a first soil-blocking net 210 is arranged at the bottom in each emergent aquatic plant planting groove 21, a plurality of packing cylinders 22 and suspension frames 23 are uniformly distributed at the lower end of the ecological floating disc 2, the packing cylinders 22 and the suspension frames 23 are respectively arranged at intervals with the planting grooves 21, the packing cylinders 22 are annularly distributed, the upper ends and the lower ends of the packing cylinders 22 are closed, a plurality of water permeable holes are uniformly distributed on the side wall, 3 porous partition plates 220 are uniformly distributed in the packing cylinders 22, and biological fillers are filled in the area between two adjacent porous partition plates 220; the suspension brackets 23 are positioned inside the annularly distributed packing cylinders 22, and each suspension bracket 23 is provided with 3 submerged plant planting boxes 230; the upper end of each packing cylinder 22 is fixedly connected with the lower end face of the ecological floating disc 2, a rotating rod 221 is arranged in each packing cylinder 22, the lower end of the rotating rod 221 is rotatably clamped with the bottom in the packing cylinder 22, the upper end of the rotating rod 221 sequentially penetrates through each porous partition plate 220 and the packing cylinder 22 and then is rotatably clamped with the lower end face of the ecological floating disc 2, 5 connecting blocks 222 are arranged in the circumferential direction of each porous partition plate 220, each connecting block 222 penetrates through the packing cylinder 22 and is provided with a floating plate 223, a rotating groove 224 is formed at the joint of each connecting block 222 and the packing cylinder 22, when the floating plate 223 is impacted by water flow, the porous partition plates 220 and the rotating rod 221 are driven to rotate, so that biological packing filled in the packing cylinder 22 is fully contacted with sewage, and the mold hanging effect of microorganisms is improved; the submerged plant planting tank 231 is arranged on the submerged plant planting tank 230, the submerged plant planting tank 231 penetrates through the submerged plant planting tank 230, the second soil retaining net 232 is arranged at the bottom in the submerged plant planting tank 231, the submerged plant planting tank 231 and the second soil retaining plate 232 are arranged, the submerged plant growth is facilitated, and therefore pollutants such as nitrogen, phosphorus and the like in river sewage are fully absorbed by the submerged plant;
as shown in fig. 1 and 2, the aeration assembly 3 includes an aerator 30 and an aeration disc 31, the aerator 30 is disposed on the upper end surface of the ecological floating disc 2, the aeration disc 31 is movably clamped with the sliding guide rod 20 through a sliding sleeve 310, the aeration disc 31 is connected with the aerator 30 through a connecting hose, and a plurality of aeration nozzles 311 are uniformly distributed on the upper end surface of the aeration disc 31. An oxygen concentration sensor is arranged on the aeration disc 31; the controller and aeration machine 30, oxygen concentration sensor electric connection, through setting up oxygen concentration sensor, dissolved oxygen concentration in can the real-time supervision water, and then control the operating time of aeration machine, both guaranteed aerobic microorganism's normal growth, avoided again in the water dissolved oxygen concentration too high lead to on the filler adnexed microorganism to drop and cause secondary pollution to the water, controller, aeration machine 30 and oxygen concentration sensor are the product sold in the market.
The working principle of the invention is as follows:
s1, excavating a foundation pit with the length, width and height equal to those of the underflow box 1 in the area to be treated of the water body of the black and odorous river channel, hoisting the underflow box 1 into the foundation pit by using hoisting equipment, movably inserting the telescopic baffles 101 into the movable clamping grooves 100 of the two porous net plates 10, and blocking a gap between the underflow box 1 and a river bank by using the telescopic baffles 101;
s2, inserting net cages 12 into 3 limiting slots 11 at the bottom in the undercurrent box 1 respectively, filling filter media with different porosities into the 3 net cages 12 respectively, and filling biochar particles into gaps between the net cages 12 and the inner wall of the undercurrent box 1;
s3, planting water-stop plants in the emergent aquatic plant planting grooves 21 on the ecological floating plate 2, planting submerged plants in the submerged plant planting grooves 231 on the submerged plant planting box 230, connecting the aerator 30 with an external power supply, and spraying gas generated by the aerator 30 into the black and odorous water body from the aeration nozzles 311 after entering the aeration plate 31;
s4, enabling sewage from an upstream of a river channel to pass through the porous mesh plate 10 on one side, then sequentially passing through the filter media filled in the net cages 12, and finally flowing out of the porous mesh plate 10 on the other side, and promoting downward flow of an upper layer black and odorous water body and upward flow of a lower layer black and odorous water body by utilizing the filter media with different porosities in the net cages 12, so that undercurrent exchange of the black and odorous water body is promoted;
s5, emergent aquatic plants and submerged plants are used for absorbing pollutants in the water body, and meanwhile, biological fillers filled in the filler cylinder 22 are used for absorbing microorganisms in the water body to form a microbial film, so that organic matters in the water body are absorbed and degraded, and the purpose of treating the black and odorous water body is achieved; meanwhile, when the water level of the river channel changes, the ecological floating plate 2 continuously rises or falls under the action of the sliding guide rod 20.
Claims (10)
1. An ecological restoration device capable of enhancing the undercurrent exchange of a black and odorous water body river channel is characterized by comprising an undercurrent box (1), an ecological floating disc (2) and an aeration component (3); the submerged flow box (1) is of a cubic structure with an opening at the upper end, and porous screen plates (10) are arranged at the front end and the rear end of the submerged flow box (1); 2-4 net cages (12) are uniformly distributed at the bottom in the underflow box (1), and a filter medium is filled in each net cage (12);
the ecological floating disc (2) is positioned at the upper end of the undercurrent box (1), two sides of the lower end of the ecological floating disc (2) are movably inserted with the two porous net plates (10) through sliding guide rods (20), a plurality of emergent aquatic plant planting grooves (21) are uniformly distributed at the upper end of the ecological floating disc (2), the emergent aquatic plant planting grooves (21) penetrate through the ecological floating disc (2), a first soil blocking net (210) is arranged at the bottom in each emergent aquatic plant planting groove (21), a plurality of packing cylinders (22) and suspension frames (23) are uniformly distributed at the lower end of the ecological floating disc (2), the packing cylinders (22) and the suspension frames (23) are respectively arranged at intervals with the planting grooves (21), the packing cylinders (22) are distributed annularly, the upper ends and the lower ends of the packing cylinders (22) are closed, a plurality of water permeable holes are uniformly distributed on the side wall, 2-4 porous partition plates (220) are uniformly distributed in the packing cylinders (22), the area between two adjacent porous partition plates (220) is filled with biological fillers; the suspension brackets (23) are positioned inside the annularly distributed packing cylinders (22), and each suspension bracket (23) is provided with 2-4 submerged plant planting boxes (230);
the aeration component (3) comprises an aerator (30) and an aeration disc (31), wherein the aerator (30) is arranged on the upper end surface of the ecological floating disc (2), the aeration disc (31) is movably clamped with the sliding guide rod (20) through a sliding sleeve (310), the aeration disc (31) is connected with the aerator (30) through a connecting hose, and a plurality of aeration nozzles (311) are uniformly distributed on the upper end surface of the aeration disc (31).
2. The ecological restoration device capable of enhancing the exchange of the underflow in the river of the black and odorous water body according to claim 1, further comprising a controller, wherein the controller is electrically connected with the aerator (30), and the aeration disc (31) is provided with an oxygen concentration sensor, and the oxygen concentration sensor is electrically connected with the controller.
3. The ecological restoration device capable of enhancing the submerged flow exchange of the black and odorous water river according to claim 1, wherein two sides of the two porous net plates (10) are respectively provided with a movable clamping groove (100), and a telescopic baffle (101) is movably inserted into the movable clamping grooves (100).
4. The ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river channel according to claim 1, wherein the upper end of each packing cylinder (22) is fixedly connected with the lower end surface of the ecological floating disc (2), a rotating rod (221) is arranged inside each packing cylinder (22), the lower end of the rotating rod (221) is rotatably clamped with the inner bottom of the packing cylinder (22), the upper end of the rotating rod (221) sequentially penetrates through each porous partition plate (220) and the packing cylinder (22) and then is rotatably clamped with the lower end surface of the ecological floating disc (2), 4-8 connecting blocks (222) are arranged in the circumferential direction of each porous partition plate (220), each connecting block (222) penetrates through the packing cylinder (22) and is provided with a floating plate (223), and a rotating groove (224) is arranged at the joint of each connecting block (222) and the packing cylinder (22).
5. The ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river as claimed in claim 1, wherein a submerged plant planting groove (231) is formed in the submerged plant planting tank (230), the submerged plant planting groove (231) penetrates through the submerged plant planting tank (230), and a second soil retaining net (232) is arranged at the bottom in the submerged plant planting groove (231).
6. The ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river channel according to claim 1, wherein the bottom of the underflow box (1) is provided with a fixed anchor cone (13).
7. The ecological restoration device capable of enhancing the submerged flow exchange of the black and odorous water river according to claim 1, wherein the net cage (12) is formed by movably splicing 2-4 net barrels (120).
8. The ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river channel according to claim 1, wherein 3 net cages (12) are arranged, the net cages (12) positioned at two sides of the inner bottom of the underflow box (1) are filled with a first filter medium, the net cage (12) positioned at the middle part of the inner bottom of the underflow box (1) is filled with a second filter medium, the porosity of the second filter medium is greater than that of the first filter medium, and a gap between each net cage (12) and the inner wall of the underflow box (1) is filled with charcoal particles.
9. The ecological restoration device capable of enhancing the exchange of the underflow in the riverway of the black and odorous water body according to claim 8, wherein the underflow box (1) is provided with limiting slots (11) with the number corresponding to that of the net boxes (12), and each net box (12) is movably clamped in each limiting slot (11).
10. The ecological restoration device capable of enhancing the underflow exchange of the black and odorous water river channel according to claim 9, wherein the bottom of the underflow box (1) is provided with a fixed anchor cone (13).
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| CN115159687A (en) * | 2022-08-05 | 2022-10-11 | 上海新园林实业有限公司 | Device and method for restoring river water pollution |
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Application publication date: 20210907 |