CN111072096B - Closed water area water quality improving device based on photocatalysis - Google Patents

Closed water area water quality improving device based on photocatalysis Download PDF

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CN111072096B
CN111072096B CN202010031696.XA CN202010031696A CN111072096B CN 111072096 B CN111072096 B CN 111072096B CN 202010031696 A CN202010031696 A CN 202010031696A CN 111072096 B CN111072096 B CN 111072096B
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water
bevel gear
deck
photocatalysis
plunger pump
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CN111072096A (en
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魏莉
吴昕怡
陈伊靖
李嘉程
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • 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
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007Contaminated open waterways, rivers, lakes or ponds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/008Mobile apparatus and plants, e.g. mounted on a vehicle
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/009Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
    • 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

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a photocatalysis-based water quality improving device for a closed water area, which comprises a ship body, a water pumping module, a driving module, a processing module and a control module. The hull floats on water, be equipped with the deck in the hull, be equipped with the wash port on the deck, wash port department is equipped with the discharge gate, the deck below is the cabin, the module of drawing water is including establishing the plunger pump in the cabin, the plunger pump is used for drawing sewage suction on the deck, drive module is used for the drive module motion of drawing water, processing module is including establishing the polylith reaction plate on the deck, scribble photocatalyst coating on the reaction plate, photocatalyst coating is used for reacting with the pollutant in the sewage, control module is used for controlling opening and closing of drive module. The invention provides a closed water area water quality improving device based on photocatalysis, which is used for a small closed water area, extracts a surface water layer, purifies water by utilizing a photocatalysis principle and then discharges the purified water, thereby achieving the purpose of improving water quality.

Description

Closed water area water quality improving device based on photocatalysis
Technical Field
The invention relates to the technical field of water quality improvement, in particular to a closed water area water quality improving device based on photocatalysis.
Background
The eutrophication of closed water body is a global water environment pollution problem. The closed water areas in China are widely distributed, and the water area is small and easy to pollute, so that the water self-purification capacity is low, and the eutrophication degree is high. Eutrophication is a manifestation of organic pollution of water and can accelerate the aging process of water. According to statistics, more than 80% of closed water bodies in China have eutrophication problems.
The existing treatment modes mainly comprise three types, namely biological treatment, chemical treatment and mechanical treatment. Biological treatment processes have long treatment cycles and high difficulty factors and may also cause biological invasion. The chemical treatment method has high cost and is easy to cause secondary pollution. The mechanical treatment method has high energy consumption, and can easily bring the bottom mud with more serious underwater pollution to the water in the process of extracting the water, thereby causing secondary pollution.
The prior art document is searched, and the Chinese patent application No. 201620532650.5 discloses an extraction type semi-automatic water area purification device, which comprises a framework, a traction rope, a mesh and an adsorption material. The middle of the upper end of the framework is provided with a traction rope, the periphery of the framework is wrapped by a plurality of layers of mesh cloth, and each layer of mesh cloth is provided with a plurality of adsorbing materials for adsorbing pollutants. The upper end of each layer of mesh cloth is provided with a traction rope for pulling out the mesh cloth, and the adsorption effect of the adsorption material on the inner mesh cloth is not influenced when the adsorption material attached to the outer mesh cloth is replaced. However, the device needs to manually recover the mesh cloth and replace the adsorbing material, and the purifying capacity is reduced along with the reduction of the adsorbing capacity of the adsorbing material, so that the manpower and the adsorbing material are consumed, and the purifying effect is unstable.
Chinese patent application No. 201620297089.7, the technology relates to a water quality improving device with a dissolved oxygen device, and the device mainly comprises a submersible pump and the dissolved oxygen device. When the device is operated, the submersible pump sucks water near bottom mud under the water surface of a closed water area into the submersible pump, the oxygen dissolving device uses the sprinkling nozzle to efficiently mix the water supplied by the submersible pump with oxygen pumped by an oxygen supply source to generate high-concentration oxygen water, and the generated high-concentration oxygen water is discharged in the whole circumferential direction, so that the lake bottom water is kept in an aerobic state, microorganisms are activated to purify the water, the water quality around the device can be effectively improved, and nutrient salts such as nitrogen and phosphorus can be inhibited from dissolving out of the bottom mud. However, in the actual purification process, the blue algae on the water surface cannot be cleaned, and only the water quality around the device can be improved, so that the problem of water eutrophication cannot be effectively solved.
Disclosure of Invention
In light of the deficiencies of the prior art, it is an object of the present invention to provide a device for improving the water quality of a closed water area based on photocatalysis.
In order to solve the technical problems, the invention adopts the technical scheme that:
closed waters quality of water improves device based on photocatalysis includes:
the ship body floats on the water surface, a deck is arranged on the ship body, a cabin is arranged below the deck, a drain hole is formed in the edge of the deck, and a drain door for opening and closing the drain hole is arranged through a first steering engine;
the pumping module comprises a plunger pump arranged in the cabin, a pumping pipe and a water injection pipe are arranged on the plunger pump, the pumping pipe and the water injection pipe penetrate through the ship body, the pumping pipe is used for pumping sewage from water, and the water injection pipe is used for injecting the sewage to the deck;
the driving module comprises a wind power driving device and an electric power driving device which are used for driving the plunger pump to move;
the treatment module comprises a plurality of reaction plates arranged on the deck, wherein the reaction plates are coated with photocatalyst coating which is used for reacting with pollutants in sewage;
and the control module comprises a control panel, and the control panel is electrically connected with the wind power driving device and the electric power driving device and is used for controlling the wind power driving device and the electric power driving device to move so as to control the plunger pump to move.
Furthermore, the wind power driving device comprises a central shaft penetrating through the deck from outside to inside, a plurality of blades arranged at the top of the central shaft, a first telescopic rod arranged at the bottom of the central shaft and provided with an output shaft vertically downwards, a first large bevel gear and a second telescopic rod vertically downwards arranged are arranged on the first telescopic rod, a first small bevel gear is arranged on the second telescopic rod, a transmission shaft of the plunger pump is transversely arranged and provided with a second large bevel gear meshed with the first large bevel gear and a second small bevel gear meshed with the first small bevel gear, the electric power driving device comprises a motor arranged in the cabin and electrically connected with the controller, a third small bevel gear meshed with the first small bevel gear is transversely arranged and arranged on the output shaft of the motor, and when the first large bevel gear is driven to descend, the first large bevel gear is meshed with the second large bevel gear, so that the wind power driving device drives the plunger pump to move, when the second telescopic rod drives the first small bevel gear to descend, the third small bevel gear is meshed with the first small bevel gear, the first small bevel gear is meshed with the second small bevel gear, and the controller controls the motor to rotate so as to drive the plunger pump to move.
Furthermore, a plurality of the blades are distributed in a central symmetry mode around the central shaft, and each blade is spiral and rectangular in section.
Furthermore, the first telescopic link is controlled to stretch through a first electric push rod, the second telescopic link is controlled to stretch through a second electric push rod, and the first electric push rod and the second electric push rod are electrically connected with the controller.
Furthermore, a scraper is arranged on the deck and is of a rectangular plate-shaped structure, and one end of the scraper is sleeved on the central shaft.
Furthermore, be equipped with residue leakage hole on the deck, residue leakage hole bottom is equipped with and is used for blocking the baffle in residue leakage hole, the baffle passes through second steering wheel drive and rotates, the steering wheel with the control panel electricity is connected, the baffle bottom is equipped with the residue and collects the box.
Further, the photocatalyst coating is gamma-Fe 2O3A composite photocatalyst coating of a carrier.
Furthermore, the iron-doped percentage of the photocatalyst coating is 2-3%.
Furthermore, the top of the central shaft is provided with an air speed sensor which is electrically connected with the controller.
Furthermore, a first pressure sensor is arranged at the bottom of the deck, a second pressure sensor is arranged at the top of the ship body, and the first pressure sensor and the second pressure sensor are electrically connected with the controller.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the device for improving the water quality of the closed water area based on photocatalysis is mainly suitable for being used for small closed water areas, extracting a surface water layer, purifying water by utilizing the photocatalysis principle and then discharging the purified water, thereby realizing the purpose of improving the water quality.
2. According to the device for improving the water quality of the closed water area based on photocatalysis, the blades can receive wind from all directions, the utilization efficiency of wind energy is improved, and the greenization of energy is realized.
3. The device for improving the water quality of the closed water area based on photocatalysis is provided with an electric driving device and is used for overcoming the defect that a wind driving device cannot drive a plunger pump to move in the absence of wind or in the presence of wind.
4. According to the photocatalysis-based water quality improving device for the closed water area, the residue leakage holes are formed in the deck, the baffle plates for blocking the residue leakage holes are arranged at the bottoms of the residue leakage holes, the residue collecting box is arranged at the bottom of each baffle plate, after inorganic nitrogen and most organic pollutants in water are treated by a photocatalyst, part of treated waste residues can be collected by the residue collecting box, and polysaccharides, proteins, fats and the like in the residues can be used for processing fine feed or high-quality fertilizer.
5. The invention relates to a photocatalysis-based device for improving the water quality of a closed water area, wherein a reaction plate is arranged on a deck and coated with gamma-Fe 2O3The composite photocatalyst coating of carrier is prepared from gamma-Fe 2O3The composite photocatalyst coating of the carrier is an environment-friendly coating with photocatalytic performance, which combines photocatalyst materials with the coating and can ensure that substances adsorbed on the surface are subjected to oxidation or reduction reaction, water or oxygen in the air is catalyzed into active groups with extremely strong oxidizing capability, organic compounds and partial inorganic substances can be decomposed strongly, and the cell structure of microorganisms can be destroyed, so that the cleaning effect is achieved.
6. According to the device for improving the water quality of the closed water area based on photocatalysis, the iron content of the composite photocatalyst coating of the gamma-Fe 2O3 carrier is 2-3%, and compared with pure titanium dioxide, the iron-doped titanium dioxide has a better photocatalysis effect, and in addition, when the iron content is 2-3%, the decolorization rate is higher.
7. The device for improving the water quality of the closed water area based on photocatalysis can efficiently treat organic and inorganic pollutants, has the advantages of no pollution, reutilization and the like, greatly reduces the consumption cost, and has good energy-saving and emission-reducing benefits and social benefits.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of the present invention.
Fig. 3 is a schematic view of the interior of the hold of the present invention.
Fig. 4 is a schematic structural view of the deck of the present invention.
Fig. 5 is a schematic view of the structure of the plunger pump of the present invention.
Fig. 6 is a schematic structural view of the baffle of the present invention.
FIG. 7 is a schematic view of the residue collection box according to the present invention.
FIG. 8 is a graph comparing absorbance versus wavelength for iron-doped titanium dioxide and pure titanium dioxide according to the present invention.
FIG. 9 is a schematic diagram showing the relationship between the degradation rate of the iron-doped titanium dioxide and the time for photocatalytic degradation of pure titanium dioxide wastewater.
FIG. 10 is a plot of decolorization ratio versus sample weight without different iron loadings according to the present invention.
Fig. 11 is a schematic block diagram of the circuit of the present invention.
Fig. 12 is a flow chart of the operation of the present invention.
Wherein: 100. a hull; 110. a deck; 111. a reaction plate; 112. residue leaks out of the hole; 120. a cabin; 130. a drain hole; 140. a residue collection box; 150. a baffle plate;
200. a water pumping module; 210. a plunger pump; 211. a water injection pipe; 212. a water pumping pipe; 220. a second large bevel gear; 230. a second bevel pinion;
300. a drive module; 310. a wind power drive device; 311. a central shaft; 312. a blade; 313. a first telescopic rod; 314. a second telescopic rod; 315. a first large bevel gear; 316. a first bevel pinion; 317. a squeegee; 320. an electric drive device; 321. a motor; 322. a third bevel pinion.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 12, the photocatalytic-based closed water area water quality improving apparatus includes a hull 100, a pumping module 200, a driving module 300, a processing module, and a control module. The ship body 100 floats on water, the water pumping module 200 is used for pumping water into the ship body 100, the driving module 300 is used for driving the water pumping module 200 to move, the processing module is used for reacting with pollutants in the water, and the control module is used for controlling the driving module 300 to be opened and closed.
The device is mainly suitable for small closed water areas, surface water layers are extracted, and the water is purified by utilizing the photocatalysis principle and then discharged, so that the aim of improving the water quality is fulfilled.
As shown in fig. 1 to 4, a hull 100 floats on a water surface, a deck 110 is provided on the hull 100, a hold 120 is provided under the deck 110, and a drain hole 130 and a drain gate for opening and closing the drain hole 130 by a first steering gear are provided at an edge of the deck 110.
In the invention, the hull 100 is an inverted frustum-shaped cavity structure with an open top, so that the hull 100 can float on water conveniently, and is made of acrylic plates.
The pumping module 200 includes a plunger pump 210 disposed in the cabin 120, as shown in fig. 3 and 4, a pumping pipe 212 and a water injection pipe 211 are disposed on the plunger pump 210, and both the pumping pipe 212 and the water injection pipe 211 penetrate through the hull 100, the pumping pipe 212 is used for pumping sewage from the water, and the water injection pipe 211 is used for injecting the sewage onto the deck 110. The water injection pipe 211 and the pumping pipe 212 are made of a stainless steel material.
The driving module 300 includes a wind driving device 310 and an electric driving device 320 for driving the plunger pump 210 to move. In a normal situation, the device drives the plunger pump 210 to move through the wind-driven device 310, and the electric driving device 320 is used for making up for the defect that the wind-driven device 310 cannot drive the plunger pump 210 to move in no wind or in low wind.
The treatment module comprises a plurality of reaction plates 111 arranged on the deck 110, and photocatalyst paint is coated on the reaction plates 111 and used for reacting with pollutants in the sewage.
The control module comprises a control panel, the control panel is electrically connected with the wind power driving device 310, the electric power driving device 320 and the first steering engine, the control panel is used for controlling the wind power driving device 310 and the electric power driving device 320 to move, further controlling the plunger pump 210 to move, extracting sewage from water and injecting the sewage onto the deck 110, so that pollutants in the sewage react with reactants, the control panel simultaneously controls the first steering engine to move, the drainage door is opened or closed, further the drainage hole 130 is opened or closed, and further the sewage on the deck 110 is drained.
In the invention, a battery can be arranged to supply power to the device.
The wind power driving device 310 and the electric power driving device 320 of the present invention will be described in detail with reference to fig. 3 and 4.
The wind power driving device 310 comprises a central shaft 311 penetrating through the deck 110 from outside to inside, a plurality of blades 312 arranged at the top of the central shaft 311, a first telescopic rod 313 is arranged at the bottom of the central shaft 311, an output shaft is vertically and downwards arranged, a first large bevel gear 315 and a second telescopic rod 314 vertically and downwards arranged are arranged on the first telescopic rod 313, a first small bevel gear 316 is arranged on the second telescopic rod 314, a transmission shaft of the plunger pump 210 is transversely arranged and is provided with a second large bevel gear 220 meshed with the first large bevel gear 315 and a second small bevel gear 230 meshed with the first small bevel gear 316, the electric driving device 320 comprises a motor 321 which is arranged in the cabin 120 and is electrically connected with the controller through a driver, and an output shaft of the motor 321 is transversely arranged and is provided with a third small bevel gear 322 meshed with the first small bevel gear 316.
In the using process of the plunger pump, the plunger pump 210 is driven to move by the wind power driving device 310, when the plunger pump 210 is driven to move by the wind power driving device 310, the controller controls the first telescopic rod 313 to drive the first large bevel gear 315 to descend, so that the first large bevel gear 315 is meshed with the second large bevel gear 220, the wind drives the blade 312 to rotate, the central shaft 311 and the first large bevel gear 315 are driven to rotate, and the second large bevel gear 220 meshed with the first large bevel gear 315 is driven to rotate, so that the plunger pump 210 is driven to move. When no wind exists or wind is small, the controller controls the second telescopic rod 314 to drive the first small bevel gear 316 to descend, the third small bevel gear 322 is meshed with the first small bevel gear 316, the first small bevel gear 316 is meshed with the second small bevel gear 230, the motor 321 moves to enable the third small bevel gear 322 to rotate to drive the first small bevel gear 316 meshed with the third small bevel gear to rotate, the first small bevel gear 316 rotates to drive the second small bevel gear 230 meshed with the first small bevel gear to rotate, and the controller controls the motor 321 to rotate to drive the plunger pump 210 to move so as to overcome the defect that the wind power driving device 310 cannot drive the plunger pump 210 to move when no wind exists or wind is small.
In one embodiment, as shown in fig. 1, the plurality of blades 312 are distributed in a central symmetry manner about the central axis 311, and the blades 312 are all spiral and have a rectangular cross section, so that the blades 312 are driven by wind to rotate, and further, the central axis 311 is driven to rotate.
In another embodiment, as shown in FIG. 2, the support bracket is fixed to the top of the central shaft 311. The support frame includes upper bracket and bottom suspension fagging, and upper bracket and bottom suspension fagging all include many spinal branchs vaulting pole. In the upper support frame, one end of each support rod is fixed on the central shaft 311, the other end of each support rod is suspended, the plurality of support rods are distributed in a central symmetry mode relative to the central shaft 311, and the other ends of the two adjacent support rods are fixedly connected through one connecting rod. In the lower support frame, one end of each support rod is fixed on the central shaft 311, the other end of each support rod is suspended, the support rods are distributed in a central symmetry mode relative to the central shaft 311, and the other ends of the two adjacent support rods are fixedly connected through one connecting rod. The blades 312 include rectangular blades and spiral blades, a rectangular blade is disposed between the upper and lower support frames, and at least two spiral blades with rectangular cross sections are disposed on the top of the central shaft 311 and are distributed centrosymmetrically with respect to the central shaft 311.
In both embodiments, the wind-engaging performance of the blades 312 is good, and no yaw system is required; the blades 312 are simple and convenient to install and maintain; the noise is little, and alternating stress influence is little, and the life-span is longer, and wind-force drive arrangement 310 all can receive the wind of all directions, guarantees the maximize of wind energy utilization efficiency.
Preferably, the first telescopic rod 313 is controlled to extend and retract by a first electric push rod, the second telescopic rod 314 is controlled to extend and retract by a second electric push rod, and the first electric push rod and the second electric push rod are electrically connected with the controller.
Preferably, the deck 110 is provided with a scraper 317, as shown in fig. 1-3, the scraper 317 is a rectangular plate-shaped structure, and one end of the scraper 317 is sleeved on the central shaft 311. Through setting up scraper blade 317, when center pin 311 rotated, can drive scraper blade 317 and rotate, make the pollutant in aquatic and reactant reaction more abundant.
Preferably, the deck 110 is provided with a residue leakage hole 112, as shown in fig. 5 and 6, a baffle 150 for blocking the residue leakage hole 112 is arranged at the bottom of the residue leakage hole 112, the baffle 150 is driven to rotate by a second steering engine, the second steering engine is electrically connected with the control panel, and a residue collection box 140 is arranged at the bottom of the baffle 150.
In the use, residue leakage hole 112 is normally closed state, and control panel interval control second steering wheel motion drives baffle 150 and rotates for residue leakage hole 112 is opened, takes residue on with deck 110 from residue leakage hole 112 into residue collection box 140 through scraper 317.
The reactants of the present invention will be described in detail below with reference to the accompanying drawings.
The reactant on the deck 110 is used for reacting with the pollutant in water, the reactant is a photocatalyst coating, and the photocatalyst coating is gamma-Fe 2O3A composite photocatalyst coating of a carrier. The photocatalyst coating is an environment-friendly coating with photocatalytic performance produced by combining a photocatalyst material and the coating. When a semiconductor is irradiated with light, excited electrons transit from the valence band of the semiconductor to the conduction band, at which time the conduction band acquires photo-generated electrons, and the valence band leaves photo-generated holes, thereby generating carriers inside the semiconductor. These carriers can migrate to the semiconductor surface to undergo oxidation or reduction reactions with the species adsorbed on the surface. Wherein water or oxygen in the air is catalyzed into active groups with extremely strong oxidizing ability, organic compounds and partial inorganic substances can be decomposed strongly, and the cell structure of microorganisms can be destroyed.
By adopting an ultraviolet-visible light spectrum analysis method and referring to fig. 8, the absorbance and the wavelength of the iron-doped titanium dioxide and the pure titanium dioxide are obtained, the absorbance of the iron-doped titanium dioxide is higher than that of the pure titanium dioxide within the whole visible light wavelength of 360-700nm, and the spectral absorption sideband of the iron-doped titanium dioxide is expanded from about 400nm to about 450nm of the pure titanium dioxide. The absorption side band is red-shifted, the spectral response range of the titanium dioxide nano particles doped with iron ions is expanded to a visible light region, and the absorbance is improved by 5 times compared with that of a pure titanium dioxide photocatalyst.
The photocatalysis capability of the iron-doped titanium dioxide and the pure titanium dioxide is tested by carrying out COD degradation experiment, 20ml of azo wastewater raw water sample is taken, diluted to 1000ml, divided into two parts, the pH value is adjusted to be 4, and the two parts are respectively used under the optimal conditionPrepared pure TiO2And Fe-TiO250g of each powder is used as a photocatalyst, and the azo wastewater is degraded by a photocatalytic degradation experiment under the ultraviolet condition. The chemical oxygen demand is measured by taking a water sample once, and the COD value is measured by a dichromate method.
Pure TiO2And Fe-TiO2The time-dependent change of the photocatalytic degradation rate D% of the azo wastewater by photocatalytic degradation is shown in FIG. 9, and the obtained iron-doped titanium dioxide has a significantly better photocatalytic effect than pure titanium dioxide.
Through the experiments, the invention adopts the iron-doped titanium dioxide as the photocatalyst, and the iron-doped amount w (Fe3+/TiO2) is opposite to Fe-TiO2The photocatalysis effect of the catalyst is large. The experiment of carrying out photocatalytic treatment on azo wastewater by different iron-doped quantifying agents under the same photocatalytic condition shows that the original absorbance is 0.085, and each group contains 10 ml.
As can be seen from fig. 10, the decoloring rate was maximized when the iron doping was 2.5% by mass, and thus the iron doping was controlled to be 2% to 3% by mass.
Selected sensors of the present invention will be described in detail below.
Preferably, the top of the central shaft 311 is provided with an air speed sensor, the air speed sensor is electrically connected to the controller, when the air speed detected by the air speed sensor is low, the controller controls the second telescopic rod 314 to drive the first bevel pinion 316 to descend and controls the motor 321 to move, the motor 321 moves to drive the third bevel pinion 322 to rotate and drive the first bevel pinion 316 engaged with the third bevel pinion 322 to rotate, and the first bevel pinion 316 rotates and drives the second bevel pinion 230 engaged with the first bevel pinion 316 to rotate, so that the electric driving device 320 drives the plunger pump 210 to move, and the defect that the wind driving device 310 cannot drive the plunger pump 210 to move in the absence of wind or in the presence of wind is overcome.
Preferably, as shown in fig. 11, since the amount of sewage contained on the deck 110 is limited, a first pressure sensor is provided at the bottom of the deck 110 and a second pressure sensor is provided at the top of the hull 100 to control the amount of sewage on the deck 110. The first pressure sensor and the second pressure sensor are electrically connected with the controller, when the first pressure sensor does not sense pressure, the controller controls the first telescopic rod 313 to descend, the plunger pump 210 is driven to move through the wind power driving device 310, the wind speed sensor detects wind speed, if no wind exists or wind is small, the controller controls the second telescopic rod 314 to descend, and the electric driving device 320 is used for making up for the defect that the wind power driving device 310 cannot drive the plunger pump 210 to move when no wind exists or wind is small; when the second pressure sensor senses pressure, the controller controls the first telescopic rod 313 to ascend, so that the wind power driving device 310 or the electric power driving device 320 stops driving the plunger pump 210 to move, the controller is timed by the first timer, pollutants and reactants are made to react within a certain time and the reaction is finished, the controller controls the first steering engine to move and drive the drainage door to be opened, so that sewage on the deck 110 is drained, the controller sets a certain drainage time by the second timer, the drainage is finished, the controller controls the first steering engine to move and drive the drainage door to be closed, the controller controls the second steering engine to move and open the baffle 150, so that residues are pushed into the residue collection box 140 by the scraping plate 317, the controller sets a certain collection time by the third timer, and after the collection is finished, the controller controls the second steering engine to move and close the baffle 150.
In the examples of the present invention, the reaction time of the contaminants in the wastewater with the reactants was 1 hour.
Because the reactant is the photocatalyst coating, no light exists at night, so the photocatalyst coating cannot work, but all the rest parts can work. The day and night modes of operation are different. The device utilizes the photosensitive element to be electrically connected with the controller, and the controller controls the motor 321 to move so as to automatically switch the daytime working mode and the night working mode. Wherein the photosensitive element may be a photoresistor or a photosensor.
The operation of the present invention will be described in detail below.
In the daytime working mode, as shown in fig. 12, when the first pressure sensor does not sense pressure, the controller controls the first telescopic rod 313 to descend, the plunger pump 210 is driven to move by the wind power driving device 310, the wind speed sensor detects wind speed, and if no wind exists or wind is small, the controller controls the second telescopic rod 314 to descend, and the electric driving device 320 is used for making up for the defect that the wind power driving device 310 cannot drive the plunger pump 210 to move when no wind exists or wind is small; when the second pressure sensor senses pressure, the controller controls the first telescopic rod 313 to ascend, so that the wind power driving device 310 or the electric power driving device 320 stops driving the plunger pump 210 to move, the controller is timed by the first timer, pollutants and reactants are made to react within a certain time and the reaction is finished, the controller controls the first steering engine to move and drive the drainage door to be opened, so that sewage on the deck 110 is drained, the controller sets a certain drainage time by the second timer, the drainage is finished, the controller controls the first steering engine to move and drive the drainage door to be closed, the controller controls the second steering engine to move and open the baffle 150, so that residues are pushed into the residue collection box 140 by the scraping plate 317, the controller sets a certain collection time by the third timer, and after the collection is finished, the controller controls the second steering engine to move and close the baffle 150.
In the night working mode, the motor 321, the first pressure sensor, the second pressure sensor and the wind speed sensor are disconnected, the plunger pump 210 only drives to move through the wind power driving device 310, the first steering engine controls the drainage door to be opened, the drainage port is in a normally open state, the controller is timed through the timer, pollutants and reactants react in a certain reaction time, the reaction time is up, the controller controls the second steering engine to move to open the baffle 150, residues are pushed into the residue collection box 140 through the scraper 317, after collection is finished, the controller controls the second steering engine to move to close the baffle 150, the algae are collected to the residue collection box 140 through rotation of the baffle 150 and the scraper 317, and the purpose of collecting the algae at night with low energy consumption is achieved.
It is to be understood that the above-described embodiments are only a few, and not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (9)

1. Closed waters quality of water improves device based on photocatalysis, its characterized in that includes:
the ship body floats on the water surface, a deck is arranged on the ship body, a cabin is arranged below the deck, a drain hole is formed in the edge of the deck, and a drain door for opening and closing the drain hole is arranged through a first steering engine;
the pumping module comprises a plunger pump arranged in the cabin, a pumping pipe and a water injection pipe are arranged on the plunger pump, the pumping pipe and the water injection pipe penetrate through the ship body, the pumping pipe is used for pumping sewage from water, and the water injection pipe is used for injecting the sewage to the deck;
the driving module comprises a wind power driving device and an electric power driving device which are used for driving the plunger pump to move, the wind power driving device comprises a central shaft penetrating through a deck from outside to inside, a plurality of blades arranged at the top of the central shaft, a first telescopic rod which is arranged at the bottom of the central shaft and an output shaft which is vertically and downwards arranged, a first large bevel gear and a second telescopic rod which is vertically and downwards arranged are arranged on the first telescopic rod, a first small bevel gear is arranged on the second telescopic rod, a second large bevel gear which is meshed with the first large bevel gear and a second small bevel gear which is meshed with the first small bevel gear are transversely arranged and installed on a transmission shaft of the plunger pump, the electric power driving device comprises a motor which is arranged in a cabin and electrically connected with a controller, and a third small bevel gear which is meshed with the first small bevel gear is transversely arranged and installed on the output shaft of the motor, when the first large bevel gear is driven by the first telescopic rod to descend, the first large bevel gear is meshed with the second large bevel gear, so that the wind power driving device drives the plunger pump to move, when the second telescopic rod drives the first small bevel gear to descend, the third small bevel gear is meshed with the first small bevel gear, the first small bevel gear is meshed with the second small bevel gear, and the controller controls the motor to rotate so as to drive the plunger pump to move;
the treatment module comprises a plurality of reaction plates arranged on the deck, and photocatalyst coating is coated on the reaction plates and used for reacting with pollutants in sewage;
and the control module comprises a control panel, and the control panel is electrically connected with the wind power driving device and the electric power driving device and is used for controlling the wind power driving device and the electric power driving device to move so as to control the plunger pump to move.
2. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 1, wherein: the blades are distributed in a centrosymmetric mode around the central shaft, each blade is spiral, and the section of each blade is rectangular.
3. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 1, wherein: the first telescopic link is controlled to stretch through a first electric push rod, the second telescopic link is controlled to stretch through a second electric push rod, and the first electric push rod and the second electric push rod are electrically connected with the controller.
4. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 1, wherein: the deck is provided with a scraper which is of a rectangular plate-shaped structure, and one end of the scraper is sleeved on the central shaft.
5. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 1, wherein: the on-board residue leakage hole is arranged, the bottom of the residue leakage hole is provided with a baffle for blocking the residue leakage hole, the baffle rotates through the driving of a second steering engine, the second steering engine is electrically connected with the control panel, and a residue collection box is arranged at the bottom of the baffle.
6. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 1, wherein: the photocatalyst coating is gamma-Fe2O3A composite photocatalyst coating of a carrier.
7. The device for improving the water quality of the closed water area based on the photocatalysis as claimed in claim 6, wherein: the mass percentage of the iron-doped photocatalyst coating is 2-3%.
8. The device for improving the water quality of closed water areas based on photocatalysis according to any one of claims 1 to 7, which is characterized in that: and the top of the central shaft is provided with a wind speed sensor which is electrically connected with the controller.
9. The device for improving the water quality of closed water areas based on photocatalysis according to any one of claims 1 to 7, which is characterized in that: the ship is characterized in that a first pressure sensor is arranged at the bottom of the deck, a second pressure sensor is arranged at the top of the ship body, and the first pressure sensor and the second pressure sensor are electrically connected with the controller.
CN202010031696.XA 2020-01-13 2020-01-13 Closed water area water quality improving device based on photocatalysis Active CN111072096B (en)

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