CN111573848A - Adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system - Google Patents

Adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system Download PDF

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Publication number
CN111573848A
CN111573848A CN202010343539.2A CN202010343539A CN111573848A CN 111573848 A CN111573848 A CN 111573848A CN 202010343539 A CN202010343539 A CN 202010343539A CN 111573848 A CN111573848 A CN 111573848A
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net
water
graphene
photocatalytic
optical fiber
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耿波
许亮
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Jiangsu Shuangliang Environmental Technology Co ltd
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Jiangsu Shuangliang Environmental Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts

Abstract

The invention discloses a water ecological comprehensive treatment system adopting a graphene photocatalytic net, which is characterized in that a polluted slow-flow water body is selected, aquatic plants and a bottom net are scattered into a river, the graphene photocatalytic net is assembled, a balance weight and a buoy of the graphene photocatalytic net are installed, and an optical fiber irradiation layer is arranged at the bottom of the river; assembling a net distribution floating frame; arranging a water circulating device, wherein the water circulating device comprises a circulating water pump, a pipeline and a water separator with a water outlet; and installing and fixing the graphene photocatalysis net in the polluted water body. The invention provides an ecological comprehensive treatment system adopting a graphene photocatalytic net water, which is high in attractiveness and good in treatment effect. The water body ecological restoration method has a good removal effect on pollutants, combines a photocatalysis technology with an aquatic plant treatment technology, and has a good water body ecological treatment effect.

Description

Adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system
Technical Field
The invention relates to the technical field of water treatment, in particular to a water ecological comprehensive treatment system adopting a graphene photocatalytic net.
Background
Various pollutants exist in natural water, mainly comprising organic pollutants which are difficult to biodegrade conventionally, such as residual COD in tail water of a municipal sewage treatment plant; pesticide, herbicide and other persistent organic pollutants brought into water body by runoff in rural area non-point source pollution, nitrogen, phosphorus and other pollutants which are easy to cause water body eutrophication, and the like.
At present, the common water treatment methods mainly comprise physical methods, such as precipitation, floating method, filtration, reverse osmosis and the like; chemical methods, mainly including neutralization, coagulation, redox, ion exchange, electrodialysis, etc.; the biochemical method mainly includes an activated sludge method, a biofilm method, and the like.
The improvement of the water ecology can be started from the following aspects:
firstly, the dissolved oxygen in the water is consumed by exogenous organic pollutants and ammonia nitrogen. Organic pollutants enter the river and are one of the main reasons for causing the black and odorous phenomenon of the water body. When the water body is anoxic to a low level, the anaerobic bacteria breed in a large quantity, organic matters are further decomposed under the action of anaerobic microorganisms, and a large quantity of hydrogen sulfide, amine, ammonia and other volatile micromolecule compounds with peculiar smell are generated, so that the odor is emitted. Meanwhile, under the anaerobic condition, methane, nitrogen, hydrogen sulfide and other gases which are difficult to dissolve in water and are generated in the sediment carry sludge into a water phase in the rising process, so that the water body is blackened. In addition, Fe in water2+、Mn2+Plasma metal ion and S in water2-Forming blackening substances FeS, MnS and the like, and adsorbing iron manganese sulfide by humus in water to form a large amount of suspended matters so as to blacken the water body.
Second, endogenous bottom sludge contamination. When the water body is polluted, part of pollutants accumulate day by month and enter the sediment of the water body through sedimentation or along with the adsorption of particulate matters. The sediment is used as an important endogenous pollutant of urban water, the sediment resuspends under the conditions of acidity and reduction and under the influence of hydraulic flushing, biological activity and artificial disturbance, then the pollutant adsorbed on sediment particles is exchanged with pore water under a series of physical-chemical-biological comprehensive actions, the pollutant and ammonia nitrogen are released from the sediment, and a large amount of suspended particles float in water, so that the water is blackened and smelly.
And thirdly, the influence of insufficient hydrodynamic conditions and unsmooth water circulation. The water body losing the ecological function is usually reduced in fluidity or completely disappears, so that the reoxygenation capability of the water body is reduced directly, the problem of oxygen deficiency of a local water area or a water layer is serious, hydrodynamic conditions suitable for rapid propagation of blue-green algae are formed, the outbreak risk of water bloom is increased, and the water quality of the water body is deteriorated.
In recent years, a technology for treating black and odorous water by photocatalysis has appeared in the field of people, and the photocatalysis technology is a technology for decomposing organic matters into water and carbon dioxide by utilizing a semiconductor material to absorb solar energy to perform a chemical oxidation-reduction reaction. The technology is used for carrying out in-situ treatment on the sewage by utilizing solar energy, and has the advantages of small engineering quantity, low treatment cost, greenness and safety.
Disclosure of Invention
The invention aims to provide an ecological comprehensive treatment system which is high in attractiveness and good in stability and adopts a graphene photocatalytic net water. The water body ecological restoration method has a good removal effect on pollutants, combines a photocatalysis technology with an aquatic plant treatment technology, and has a good water body ecological treatment effect.
In order to realize the aim, the technical scheme of the invention is to design an ecological comprehensive treatment system adopting a graphene photocatalytic net water,
the method comprises the following steps:
s1, selecting polluted slow flow water, and fishing out the floating objects on the water surface; the urban river water body is mostly close to a closed static or slow-flowing medium-small river water body, the slow-flowing water body has the characteristics of small water area, easy pollution, weak self-purification capacity of the water body and the like, and in addition, when the temperature is higher, the injection of exogenous pollutants causes the accumulation of nitrogen and phosphorus nutrient substances in the water, so that the water body is easy to eutrophicate.
S2, scattering the aquatic plants and the bottom net into the river, wherein the aquatic plants and the bottom net sink into the river bed under the influence of gravity; the bottom net is arranged, so that on one hand, the sediment is prevented from being resuspended under the influence of hydraulic flushing, biological activity and artificial disturbance under the acidic and reducing conditions, and the water body is prevented from blackening and smelling; another aspect provides a growth site for an aquatic plant.
S3: assembling a graphene photocatalytic network, wherein the graphene photocatalytic network comprises photocatalytic network bodies which are sequentially connected with one another, the photocatalytic network bodies are connected through pipe sleeves positioned on the edges of the network bodies, and supporting rods are arranged in the pipe sleeves; the photocatalytic net body is also provided with a plurality of supporting rods which transversely penetrate through the net body at intervals, the supporting rods are perpendicular to the long edge of the photocatalytic net body, the interval between the supporting rods is 300mm, and two ends of each supporting rod are connected with rod sleeves fixed on the photocatalytic net; selecting a polyethylene rope with the length of 4 meters and the diameter of 6mm, fixing the polyethylene rope at two ends of each net group in a triangular fixing mode, wherein the triangular height h of the rope is 500 mm; the both ends of graphite alkene photocatalysis net are equipped with the anchor strut with bracing piece parallel arrangement.
S4, arranging an optical fiber irradiation layer, wherein the size of the optical fiber irradiation layer is matched with that of the graphene photocatalytic network, the optical fiber irradiation layer is positioned between the graphene photocatalytic network and the riverbed and is arranged in parallel with the graphene photocatalytic network, the distance between the optical fiber irradiation layer and the graphene photocatalytic network is 10-50 cm, and the optical fiber irradiation layer is connected with a biological rope through a connecting part or is connected with the riverbed through a connecting pile; the optical fiber irradiation layer is an optical fiber net formed by a plurality of transversely and longitudinally interwoven optical fibers or the optical fibers are positioned in an optical fiber plate, the optical fiber plate can be made of plastic materials or foam materials, one end of each optical fiber is a lighting end, the other end of each optical fiber is an irradiation end, the irradiation ends are distributed on each network cable node of the optical fiber irradiation layer or are uniformly distributed on the optical fiber plate, and the lighting ends of the optical fibers are positioned at sites capable of lighting day and night.
S5, assembling a net-laying floating frame, wherein the floating frame comprises a stainless steel frame body, a plurality of anchor ears are fixedly arranged on the stainless steel frame body, and a suspended plastic pipe body is arranged along the stainless steel frame body and is connected with the stainless steel frame body through the anchor ears; the stainless steel frame body is also provided with a safety hook connected with the graphene catalytic net; the stainless steel frame body is formed by welding four telescopic stainless steel pipes, one end of each stainless steel pipe is a connecting end, each connecting end comprises a positioning portion and a connecting convex block, and the positioning portions are a plurality of grooves matched with the connecting convex blocks. The width of different river courses can be satisfied through the size of adjustment stainless steel framework, reduction in production cost.
S6, arranging a water circulation device, wherein the water circulation device comprises a water circulation pump, a pipeline and a water separator, the water circulation pump and the water separator are respectively positioned at two sides of the graphene photocatalytic net, the pipeline is arranged in parallel with the arrangement direction of the graphene photocatalytic net, the water separator is arranged in parallel with the length direction of the net-distribution floating frame, and a water outlet hole is formed in the surface of the water separator; the water circulation device is arranged on the water surface or below the water surface, and the water separator pushes the water body to improve the water mobility.
S7, arranging the fixed pile body on the bank side, connecting the fixed pile body to net-laying floating frames through connecting ropes, connecting at least 5 graphene photocatalytic nets arranged in parallel between the two net-laying floating frames through the connecting ropes, arranging a tensile steel wire rope between the two net-laying floating frames, fixedly connecting the tensile steel wire rope with a sleeve rod of the graphene photocatalysis respectively, arranging a buoy at the corresponding position of the sleeve rod, and connecting the buoy with the tensile steel wire rope through a connecting piece; a balancing weight connected through a biological rope is arranged below the buoy, and the length of the biological rope is less than the actual water depth;
the net laying method comprises the following steps that a construction ship is used for laying net floating frames and graphene photocatalytic nets, the net laying floating frames are connected through traction ropes, one ends of the traction ropes are fixed to a river bank, the other ends of the traction ropes are pulled to another fixed point by the construction ship, and the graphene photocatalytic nets are slowly released after the net laying floating frames at the two ends are fixed; the sinking distance of the graphene photocatalytic net is 10-20 cm. The sinking distance refers to the distance between the graphene photocatalysis and the horizontal plane, and preferably, the graphene photocatalysis net is paved at the position 15cm below the water surface. The fixed pile bodies are galvanized steel pipe piles, and inter-pile fixed ropes are arranged between the fixed pile bodies on the same side.
The graphene photocatalysis net floats, the balancing weight and the net-laying floating frame form a stable suspension system in a microflow water body or a slow flow water body. The net distribution floating frame is mainly used for net pulling and net distribution of the graphene photocatalytic net, and the floats positioned on the two sides of the graphene photocatalytic net are mainly used for adjusting the underwater depth of the graphene photocatalytic net, so that the photocatalytic net is suspended at a proper position in water, namely 15cm below the water surface, and the photocatalytic net can be guaranteed to be capable of effectively catalytically degrading pollutants in the water; the biological ropes provide attachment sites for microorganisms in the water, so that beneficial flora in the water can grow conveniently, and meanwhile, the beneficial flora in the water can be distributed at different depths in the water by the suspended biological ropes and the biological ropes in the water, so that the self-purification capacity of the water is improved.
As a preferred technical scheme, a stainless steel support is arranged inside the stainless steel frame, a plastic corrugated plate group is arranged on the stainless steel support, and a plurality of aquatic plant planting support frames are placed on the plastic corrugated plate group. Because the stainless steel frame floats on the water surface, aquatic plants can be planted inside the stainless steel frame in order to improve the aesthetic degree of the photocatalytic net, and meanwhile, the aquatic plants also have the function of restoring the water ecology.
Preferably, the plastic corrugated plate group is composed of hollow pipe bodies, and honeycomb carriers containing nitrogen-absorbing and phosphorus-accumulating fillers are filled in the pipe bodies.
Preferably, the distance between the optical fiber irradiation layer and the riverbed is more than 150 mm. Prevent the aquatic plants on the riverbed from blocking the light of the optical fiber irradiation layer.
As the preferred technical scheme, the buoy is of an annular hollow structure and is made of plastic, a supporting rod perpendicular to the water surface is arranged on the buoy, and a fan is arranged at the upper end of the supporting rod. The floating end is provided with a universal rotary table, the fan is positioned on the universal rotary table, the fan rotates by utilizing wind energy to blow garbage near the photocatalytic net away from the photocatalytic net, and the influence of the garbage and macroalgae on the surface of the photocatalytic net or the influence of the garbage and the macroalgae floating on the surface of the photocatalytic net on the catalytic efficiency of the photocatalytic net is reduced.
The invention has the advantages and beneficial effects that:
(1) compared with the prior art, the graphene photocatalytic net water ecological comprehensive treatment system provided by the invention has the advantages that the installation process and the later maintenance process are simplified by improving the pile driving site for fixing the pile body.
(2) The suspension that the photocatalysis net was realized through setting up a plurality of floats on graphite alkene photocatalysis net to prior art, increases along with the quantity and the area of photocatalysis net, and the float quantity is more and more intensive, influences the pleasing to the eye degree of administering the waters, and this application provides buoyancy for graphite alkene photocatalysis net through the support floating frame that is equipped with aquatic plant, is showing the use quantity that reduces cursory in the graphite alkene photocatalysis net, improves the pleasing to the eye degree of photocatalysis net.
(3) The front side and the back side of the graphene photocatalytic network can be illuminated by the optical fiber irradiation layer, 24 hours of illumination can be kept, the catalytic efficiency of the graphene photocatalytic network is improved, and the treatment time is remarkably shortened.
(4) The arrangement of the water circulation device makes up the defect of hydrodynamic force, improves the fluidity of the slow flow water body, enables the water circulation to be more smooth, and improves the contact between the sewage to be treated and the graphene photocatalysis net.
(5) The application adopts the graphene photocatalysis technology to reduce exogenous organic pollutants and relieve the consumption of ammonia nitrogen to dissolved oxygen in water; endogenous bed mud pollution has been administered through planting the aquatic plant, avoids depositional bed mud to suspend once more, causes the water to blacken smellily, makes the pollutant adhere to simultaneously and reduces catalytic efficiency with the photocatalysis net surface, through graphite alkene photocatalysis technique, the aquatic plant is planted and water circulating device builds and has constituted perfect water ecological remediation system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a stainless steel frame of the present invention;
FIG. 3 is a schematic structural view of a floating frame supporting module according to the present invention;
fig. 4 is a schematic structural view of a photocatalytic network according to the present invention;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic view of the structure of the float of the present invention;
FIG. 7 is a schematic view of the structure of the irradiation layer of the optical fiber of the present invention;
FIG. 8 shows NH in a control water area after the control water area is treated by a graphene photocatalytic net3-a change in N;
FIG. 9 shows the COD change of a control water area after the control water area is treated by a graphene photocatalytic net;
FIG. 10 shows the TP change after the control water area is treated by a graphene photocatalytic net;
FIG. 11 shows the transparency change of a control water area after being treated by a graphene photocatalytic net;
FIG. 12 shows NH in experimental water area treated by graphene photocatalytic net water ecological comprehensive treatment system3-a change in N;
FIG. 13 shows the COD change in the experimental water area after treatment with the graphene photocatalytic net water ecological integrated treatment system;
FIG. 14 is a TP change after a test water area is treated by a graphene photocatalytic net water ecological comprehensive treatment system;
FIG. 15 shows the transparency change of a test water area after being treated by a graphene photocatalytic net water ecological comprehensive treatment system;
in the figure: 1. fixing the pile body; 2. laying a net floating frame; 21. hooping; 22. a suspended plastic pipe body; 23. stretching the steel wire rope; 24. connecting ropes; 3. a graphene photocatalytic network; 31. a photocatalytic mesh body; 32. pipe sleeve; 33. a support bar; 34. a rod sleeve; 35. a reinforcing rod; 36. floating; 361. a connecting member; 37. a biological rope; 38. a balancing weight; 39. a fan; 4. an optical fiber irradiation layer; 41. an optical fiber; 42. a lighting end; 43. an irradiating end; 51. a water circulating pump; 52. a pipeline; 53. a water separator.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A system for ecological comprehensive treatment of water by adopting a graphene photocatalysis net comprises the following steps:
s1, selecting polluted slow flow water, and fishing out the floating objects on the water surface;
s2, scattering the aquatic plants and the bottom net into the river, wherein the aquatic plants and the bottom net sink into the river bed under the influence of gravity;
s3: assembling a graphene photocatalytic network 3, wherein the graphene photocatalytic network comprises photocatalytic network net bodies 31 which are sequentially connected with each other, the photocatalytic network net bodies are connected through pipe sleeves 32 which are positioned at the edges of the net bodies, and supporting rods 33 are arranged in the pipe sleeves; the photocatalytic net body is also provided with a plurality of supporting rods which transversely penetrate through the net body at intervals, the supporting rods are perpendicular to the long edge of the photocatalytic net body, the interval between the supporting rods is 300mm, and two ends of each supporting rod are connected with rod sleeves 34 fixed on the photocatalytic net; selecting a polyethylene rope with the length of 4 meters and the diameter of 6mm, fixing the polyethylene rope at two ends of each net group in a triangular fixing mode, wherein the triangular height h of the rope is 500 mm;
s4, arranging an optical fiber irradiation layer 4, wherein the size of the optical fiber irradiation layer is matched with that of the graphene photocatalytic network, the optical fiber irradiation layer is positioned between the graphene photocatalytic network and the river bed and is arranged in parallel with the graphene photocatalytic network, the optical fiber irradiation layer is connected with the river bed through a connecting pile, and the optical fiber irradiation layer can also be connected with a biological rope 37 through a connecting part and further is relatively fixed with the graphene photocatalytic network; the optical fiber irradiation layer is composed of a plurality of optical fibers 41 which are transversely and longitudinally interwoven, one end of each optical fiber is a lighting end 42, the other end of each optical fiber is an irradiation end 43, the irradiation ends are distributed at each network cable node of the optical fiber irradiation layer, and the lighting ends are positioned at the sites capable of lighting day and night;
s5, assembling the cloth net floating frame 2, wherein the floating frame comprises a stainless steel frame body, a plurality of anchor ears 21 are fixedly arranged on the stainless steel frame body, and the suspended plastic pipe body 22 is arranged along the stainless steel frame body and is connected with the stainless steel frame body through the anchor ears; the stainless steel frame body is also provided with a safety hook connected with the graphene catalytic net;
s6, arranging a water circulation device, wherein the water circulation device comprises a water circulation pump 51, a pipeline 52 and a water separator 53, the water circulation pump and the water separator are respectively positioned at two sides of the graphene photocatalytic net, the pipeline is arranged in parallel with the arrangement direction of the graphene photocatalytic net, the water separator is arranged in parallel with the length direction of the net-distribution floating frame, and a water outlet hole is formed in the surface of the water separator;
s7, arranging the fixed pile body 1 on the bank side, connecting the fixed pile body to net-laying floating frames through a connecting rope 24, connecting a graphene photocatalytic net between the two net-laying floating frames through the connecting rope, arranging a tensile steel wire rope 23 between the two net-laying floating frames, fixedly connecting the tensile steel wire rope with a sleeve rod of the graphene photocatalytic respectively, arranging a buoy 36 at the corresponding position of the sleeve rod, and connecting the buoy with the tensile steel wire rope through a connecting piece 361; a balancing weight connected through a biological rope is arranged below the buoy, and the length of the biological rope is less than the actual water depth;
the net laying method comprises the following steps that net laying floating frames and graphene photocatalytic nets are laid through a construction ship, the net laying floating frames are connected through a traction rope (not shown), one end of the traction rope is fixed to a river bank, the other end of the traction rope is pulled to another fixed point through the construction ship, and the graphene photocatalytic nets are slowly released after the net laying floating frames at the two ends are fixed; the sinking distance of the graphene photocatalytic net is 10-20 cm.
The inside stainless steel support that is equipped with of stainless steel framework is equipped with plastic corrugated plate group on the stainless steel support, places a plurality of aquatic plant on the plastic corrugated plate group and plants the support frame.
The plastic corrugated plate group consists of hollow pipe bodies, and honeycomb carriers containing nitrogen-absorbing and phosphorus-accumulating fillers are filled in the pipe bodies.
The buoy 36 is of an annular hollow structure and made of plastic, a supporting rod perpendicular to the water surface is arranged on the buoy, and a fan 39 is arranged at the upper end of the supporting rod. The buoy is of an annular hollow structure and is made of plastic.
The inside stainless steel support that is equipped with of stainless steel framework is equipped with plastic corrugated plate group on the stainless steel support, places a plurality of aquatic plant on the plastic corrugated plate group and plants the support frame.
The buoy is also provided with an aquatic plant planting support frame.
The stainless steel frame body is formed by welding four telescopic stainless steel pipes, one end of each stainless steel pipe is a connecting end, each connecting end comprises a positioning portion and a connecting convex block, and the positioning portions are a plurality of grooves matched with the connecting convex blocks.
The both ends of graphite alkene photocatalysis net module are equipped with the anchor strut 35 with bracing piece parallel arrangement.
The fixed pile bodies are galvanized steel pipe piles, and inter-pile fixed ropes are arranged between the fixed pile bodies on the same side.
The inner part of the suspended plastic pipe body of the supporting floating frame module is filled with a honeycomb foam carrier containing beneficial microorganisms.
The national water quality classification standard is divided into five types according to the function height in sequence according to the environmental function and the protection target of surface water areas: class I, class II, class III, class IV and class V, the higher the class, the worse the water quality. The evaluation indexes of the urban black and odorous water body mainly comprise Dissolved Oxygen (DO) and ammonia Nitrogen (NH)3-N), Chemical Oxygen Demand (COD), Total Phosphorus (TP), Total Nitrogen (TN) and the like.
Figure BDA0002469335880000091
According to the results shown in fig. 8-11, the graphene photocatalytic net is used to treat the control water area, the water area is a severely black and odorous water body before treatment, the whole water area is black and odorous, after 14 months of treatment, the water area reaches the four types of water on the earth surface, the TP reaches the three types of water on the earth surface, the ammonia nitrogen removal rate is 96.8%, the COD maximum removal rate is 84.5%, and the total phosphorus removal rate is 92.8%.
According to the results shown in fig. 12-15, the graphene photocatalytic net water ecological comprehensive treatment system is adopted to treat water in a test water area, the water area before treatment is severely black and odorous, the whole water area is black and odorous, after 5 months of treatment, the black and odorous water is eliminated, TP reaches surface three water, ammonia nitrogen removal rate is 97.8%, COD maximum removal rate is 73.9%, surface four water is reached, total phosphorus removal rate is 87.8%, and the graphene photocatalytic net water ecological comprehensive treatment system is adopted to remarkably shorten treatment time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides an adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system which characterized in that, includes the following step:
s1, selecting polluted slow flow water, and fishing out the floating objects on the water surface;
s2, scattering the aquatic plants and the bottom net into the river, wherein the aquatic plants and the bottom net sink into the river bed under the influence of gravity;
s3: assembling a graphene photocatalytic network, wherein the graphene photocatalytic network comprises photocatalytic network bodies which are sequentially connected with one another, the photocatalytic network bodies are connected through pipe sleeves positioned on the edges of the network bodies, and supporting rods are arranged in the pipe sleeves; the photocatalytic net body is also provided with a plurality of supporting rods which transversely penetrate through the net body at intervals, the supporting rods are perpendicular to the long edge of the photocatalytic net body, the interval between the supporting rods is 300-500 mm, and two ends of each supporting rod are connected with rod sleeves fixed on the edges of the long edge of the photocatalytic net; selecting polyethylene ropes with the length of 2-6 meters and the diameter of 4-8 mm, fixing the polyethylene ropes at two ends of each net group in a triangular fixing mode for connecting a cloth net floating frame, wherein the triangular height h of the ropes is 300-600 mm;
s4, arranging an optical fiber irradiation layer, wherein the size of the optical fiber irradiation layer is matched with that of the graphene photocatalytic net, and the optical fiber irradiation layer is connected with a biological rope through a connecting part or is connected with a riverbed through a connecting pile; the distance between the optical fiber irradiation layer and the graphene photocatalytic network is 10-50 cm, a plurality of optical fibers are arranged in the optical fiber irradiation layer, one end of each optical fiber is a lighting end, the other end of each optical fiber is an irradiation end, the irradiation ends are fixed and uniformly distributed on the optical fiber irradiation layer, and the lighting ends of the optical fibers are located at sites capable of lighting day and night;
s5, assembling a cloth net floating frame, wherein the floating frame comprises a frame body, the frame body is fixedly provided with a plurality of hoops, and the floating pipe body is arranged along the frame body and connected with the frame body through the hoops; the frame body is also provided with a safety hook connected with the graphene catalytic net;
s6, arranging a water circulation device, wherein the water circulation device comprises a water circulation pump, a pipeline and a water separator, the water circulation pump and the water separator are respectively positioned at two sides of the graphene photocatalytic net, the pipeline is arranged in parallel with the arrangement direction of the graphene photocatalytic net, and the water separator is arranged in parallel with the length direction of the net-distribution floating frame;
s7, arranging the fixed pile body on the bank side, connecting the fixed pile body to the net distribution floating frames through connecting ropes, connecting the two net distribution floating frames to the graphene photocatalytic net through the connecting ropes, arranging a tensile steel wire rope between the two net distribution floating frames, fixedly connecting the tensile steel wire rope with a sleeve rod of the graphene photocatalytic respectively, arranging a buoy at the corresponding position of the sleeve rod, and connecting the buoy with the tensile steel wire rope through a connecting piece; a balancing weight connected through a biological rope is arranged below the buoy, and the length of the biological rope is less than the actual water depth;
the net laying floating frame is placed on the construction ship and is connected with the net laying of the graphene photocatalytic net through a traction rope, one end of the traction rope is fixed to the river bank, the other end of the traction rope is dragged to another fixed point through the construction ship, and the graphene photocatalytic net is slowly released after the net laying floating frames at the two ends are fixed.
2. The system of claim 1, wherein the frame body of the net floating frame is made of stainless steel, the floating pipe body is made of plastic, a stainless steel support is further arranged inside the stainless steel frame body, a plastic corrugated plate group is arranged on the stainless steel support, and a plurality of aquatic plant planting support frames are placed on the plastic corrugated plate group.
3. The system for ecologically and comprehensively treating water by using the graphene photocatalytic mesh as recited in claim 2, wherein the plastic corrugated plate group is composed of hollow tube bodies, and the interior of each tube body is filled with a honeycomb-shaped carrier containing nitrogen-absorbing and phosphorus-accumulating fillers.
4. The system for ecological comprehensive treatment of water by using the graphene photocatalytic net according to claim 3, wherein an optical fiber sheath is arranged outside the optical fiber.
5. The system of claim 4, wherein the buoy is of an annular hollow structure and is made of plastic, the buoy is provided with a support rod perpendicular to the water surface, and a fan is arranged at the upper end of the support rod.
CN202010343539.2A 2020-04-27 2020-04-27 Adopt graphite alkene photocatalysis net aquatic attitude comprehensive treatment system Pending CN111573848A (en)

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CN114772737A (en) * 2022-04-14 2022-07-22 中国科学院南京地理与湖泊研究所 Underwater light field-water quality regulation and control device and method for aquatic plant recovery

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CN113354104A (en) * 2021-07-01 2021-09-07 云南华谱量子材料有限公司 Ecological system suitable for deepwater environment restoration and construction method thereof
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