CN106542617B

CN106542617B - Sewage treatment robot

Info

Publication number: CN106542617B
Application number: CN201710048933.1A
Authority: CN
Inventors: 潘凡峰
Original assignee: Zhongxia New Energy Shanghai Co ltd
Current assignee: Zhongxia New Energy Shanghai Co ltd
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2023-04-07
Anticipated expiration: 2037-01-23
Also published as: CN106542617A

Abstract

The invention discloses a sewage treatment robot, and relates to the field of water pollution prevention and treatment. The sewage treatment robot provided by the invention adopts a floating island type structure, and has the advantages of attractive appearance, energy conservation, no need of special management, mobility and the like; by using the labyrinth electrode, the detention time of the water flow on the surface of the electrode can be prolonged, thereby increasing the oxidation efficiency of the reducing organic matters in the water flow.

Description

Sewage treatment robot

Technical Field

The invention relates to a sewage treatment robot, in particular to a floating type sewage treatment robot which adopts a labyrinth type electrode and can treat black and odorous river channels.

Background

Organic compounds such as carbohydrates, proteins, fats and lignin contained in domestic sewage and some industrial wastewater are decomposed into simple inorganic substances by microorganisms, and the organic substances consume a large amount of oxygen in the decomposition process, so that the organic substances are called aerobic pollutants. In addition, certain reducing inorganic substances also consume oxygen in water, such as NH ₃ H ₂ S, sulfite, and the like.

After the pollutants enter the water body, a large amount of dissolved oxygen in the water can be consumed, and even aquatic animals die in large quantities; when the pollution is serious, the dissolved oxygen can be reduced to zero, so that anaerobic bacteria in the water body are activated, organic matters are decomposed to generate ammonia gas, hydrogen sulfide gas and the like, the water body is blackened and smelled, the circulation of the substances is forced to be stopped, and the self-cleaning function of the water body is almost lost.

In the prior art, for some eutrophic water bodies, COD, nitrogen and phosphorus contents in the water can be degraded by building an ecological floating island, and the water bodies are recovered by depending on the ecological action. The ecological floating island takes a floatable material as a substrate or a carrier, higher aquatic plants or terrestrial plants are planted in eutrophic water, nitrogen, phosphorus and organic pollutants in the water are reduced through the absorption or adsorption of root systems of the plants, and therefore the water quality is purified. For the pollution problem of the black and odorous river channel caused by the reduction of the dissolved oxygen in the water body, the ecological floating island has little effect. Meanwhile, due to long-term oxygen deficiency of the black and odorous riverway, a large amount of organic sludge and anaerobic fermentation exist in bottom mud of the riverway, and the method of simply emptying the riverway and then injecting water again treats the symptoms and does not treat the root causes.

Therefore, those skilled in the art are devoted to develop a floating island type sewage treatment robot which can gradually decompose organic matters in the bottom mud and thoroughly control the black and odorous phenomenon of the river channel.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a sewage treatment robot, including a floating portion and a conveying portion, wherein the floating portion includes a power supply device, an electrocatalytic oxidation device, a water circulation device, and a floating island base, the power supply device is electrically connected to the electrocatalytic oxidation device and the water circulation device, the power supply device, the electrocatalytic oxidation device, and the water circulation device are collectively disposed on the floating island base, the conveying portion and the water circulation device are connected through a pipe, the electrocatalytic oxidation device includes a first electrode and a second electrode, the first electrode and the second electrode are close to each other, a gap of the first electrode and the second electrode defines a water flow path, and a path length of the water flow path is more than twice of a distance between ends of the water flow path.

Further, the power supply device adopts an amorphous silicon solar cell as a power supply.

Further, the distance between the electrode plates of the first electrode and the second electrode is 1.5-3cm.

Further, the floating part also comprises a filtering device which is arranged in front of the electrocatalytic oxidation device along the water flow direction.

Further, the electrocatalytic oxidation part also comprises an ozone generator.

Still further, the device comprises a micro-bubbling device, wherein the micro-bubbling device is connected with the ozone generator in an airtight mode.

Further, the floating part further comprises a high-frequency electrolysis device electrically connected with the power supply device.

Further, the water circulation device drives the water flow in a pulse mode.

Further, the first electrode and the second electrode are platinum electrodes.

Furthermore, the floating island base is made of hard foamed polyurethane.

Further, the conveying part comprises a spraying device, and the spraying device is connected with the water circulating device through a pipeline.

Further, the conveying part further comprises a counterweight, and the average density of the counterweight and the spraying device is 1.0-1.1 g-cm ^-3 。

Furthermore, the floating part comprises a first adapter and a second adapter, the first adapter is fixed with the floating part, the second adapter is fixedly connected with the conveying part through a pipeline, and the first adapter is movably connected with the second adapter and suitable for coaxial rotation of the first adapter and the second adapter.

Furthermore, the spraying device further comprises a buoy and a connecting line, and two ends of the connecting line are fixedly connected with the spraying device and the buoy respectively.

Still further, the connecting wire adjusting piece is further included and used for adjusting the length of the connecting wire. Simple fastening or winding device

Further, the pipe is made of flexible pressure-resistant pipe.

Further, the surface of the spraying device is coated with a biofouling prevention film layer.

Technical effects

1. The sewage treatment robot provided by the invention adopts a floating island type structure, and has the advantages of attractive appearance, energy conservation, no need of special management, mobility and the like.

2. Traditional polycrystalline silicon solar cell can't provide the power that satisfies chinampa power supply power demand because photoelectric conversion efficiency is low, along with the technological progress of photovoltaic trade, adopts amorphous silicon battery as the power, utilizes the combination of electric catalytic oxidation device and chinampa formula structure, sustainable COD value with the water control at reasonable scope.

3. By using the labyrinth electrode, the detention time of the water flow on the surface of the electrode can be prolonged, thereby increasing the oxidation efficiency of the reducing organic matters in the water flow.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic diagram of the apparatus of a preferred embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a labyrinth electrode in the embodiment of FIG. 1;

fig. 3 is a schematic structural diagram of the adapter in the embodiment of fig. 1.

Reference numerals: 1-floating part, 2-switching part, 3-conveying part, 101-amorphous silicon solar cell, 102-water pump, 103-micro bubbling device, 104-ozone generator, 105-electrolysis device, 106-floating block, 107-floating island base, 108-counterweight suction head, 109-water pumping pipeline, 201-first switching piece, 202-rotary rubber sealing ring, 203-second switching piece, 204-first through hole, 205-second through hole, 301-spraying device, 302-counterweight, 303-buoy, 304-connecting line, 305-stainless steel corrugated pipe, 1051-first electrode, 1052-second electrode, 1053-water flow channel and 1054-terminal distance.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1, the present embodiment provides a floating island type sewage treatment robot, which includes a floating part 1, a transfer part 2 and a conveying part 3, wherein the floating part 1 refers to a part floating on the water surface, and common charged devices are all disposed in the floating part 1 to reduce the additional cost caused by waterproof protection; the floating part 1 selects the amorphous silicon solar cell 101 as a power supply, and with the development of the photovoltaic industry, although the photoelectric conversion efficiency of the monocrystalline silicon solar cell in a laboratory is gradually improved to be close to the theoretical value, the photoelectric conversion efficiency is only about 15% due to the manufacturing cost and the process complexity, even if a plurality of monocrystalline silicon solar cells are connected in series to meet the voltage and power requirements for driving an electrocatalytic oxidation device, the problems of overweight floating island, overlarge volume and the like can be caused. In the embodiment, the amorphous silicon solar cell 101 is used as a power supply device, so that the photoelectric conversion efficiency of the solar cell can be improved to about 29%, and the power supply requirement of the device in the embodiment is well met.

The floating part 1 is internally provided with a water pump 102 serving as a water circulation device, the water pump 102 is matched with a counterweight suction head 108 and a water pumping pipeline 109 to form a water pumping part of a water circulation system, water at a certain height position can be pumped into the floating part 1 along the water pumping pipeline 109 for oxidation treatment, the tail end of the water pump is connected with a simple filtering device for filtering out large-volume residues, gravels, animals, plants and the like in the water, so that the phenomenon that the water flow channel behind the water pump is blocked and even the short circuit phenomenon of the electrocatalytic oxidation device is caused is prevented, and the service life of the electrocatalytic oxidation device is prolonged; in addition, the water pump 102 drives the water flow in a pulse mode, which is different from the mode of simply reducing the circulation rate of the water pump, because the electrode reaction mainly occurs at the interface of the electrode and the electrolyte, the relaxation time in the pulse mode is beneficial to the diffusion of reactants and products at the electrode, and the relatively high flow rate during the flow can improve the ion mobility of the cathode and the anode of the electrolyte, thereby improving the proceeding rate of the electrocatalytic oxidation reaction.

The part of the floating part 1 where the oxidation treatment is performed is an electrocatalytic oxidation device, and the electrocatalytic oxidation device in this embodiment specifically includes an ozone generator 104, a micro-bubbling device 103, and an electrolysis device 105, wherein a certain concentration of ozone generated by the ozone generator 104 forms a lot of micro bubbles of ozone via the micro-bubbling device 103, and because of its extremely small size, the micro bubbles can be stably dispersed in water to form a gas-phase colloid dispersion liquid, and because of its extremely small size, the micro bubbles have an extremely large specific surface area, thereby contributing to the electrode reaction of the electrocatalytic oxidation and improving the oxidation effect. Because the electrocatalytic oxidation reaction requires a certain reaction time, if linear electrolysis is adopted, the residence time of the water flow in the electrolysis device 105 is short, so that the completeness of the reaction is affected, and in order to further improve the reaction efficiency of the electrolysis device 105, the electrolysis device 105 in this embodiment adopts a labyrinth electrode, and the labyrinth electrode is usually a zigzag broken line or a spiral. Fig. 2 is a schematic diagram showing a structure of the broken line type electrode in the present embodiment, in which the first electrode 1051 and the second electrode 1052 are close to each other with a gap, the gap portion allows water to pass through, the gap portion defines a water flow path 1053, a path length of the water flow path 1053 is an actual length of the water flow path 1053, and a distance of a terminal end of the water flow path 1053 is a straight distance from a start end to a terminal end of the water flow path 1053, which is indicated by a broken line in the figure and is a distance 1054 from the terminal end. The length of the water flow path 1053 is twice or more the length of the distance 1054 from the end of the path 1053, and the length ratio of the broken line type electrode is a secant of one half of the vertex angle theta. The first electrode 1051 and the second electrode 1052 are required to be shaped and inert electrodes are required, so platinum electrodes are used in this embodiment. For the selection of the distance between the polar plates, generally speaking, as the distance between the polar plates increases, the COD significantly increases, the treatment effect becomes worse, and as the distance between the substrates increases, the treatment effect of the production wastewater becomes worse and worse, mainly because the distance between the substrates can determine the magnitude of the field intensity in the electrolyte and the potential difference between the solution and the anode plate; on the contrary, if the distance between the polar plates is reduced, the field intensity is increased, and the potential difference is increased; and the constant current density is kept, so that the distance between the polar plates is reduced, the resistance between the two polar plates can be reduced, meanwhile, the electric energy can be saved, the loss is reduced, and the cost is reduced. Therefore, the reduction of the distance between the two polar plates is beneficial to treating sewage by an electrocatalytic oxidation method, and can also shorten the electrolysis time, but if the distance between the polar plates is too small, the two polar plates are easy to contact, so that the stabilized voltage supply is burnt out due to short circuit, and the distance between the polar plates is selected to be 2cm by comprehensively considering various factors. In another embodiment of the invention, another labyrinth electrode and a DC/AC inverter can be added for converting direct current into high-frequency alternating current, the sewage to be treated can be electrolyzed by the electrolysis device, the COD value of the water body can be further reduced, and oxides generated by the anode can be introduced into the water body for secondary oxidation.

The floating part 1 assembly is assembled and then installed on a floating island base 107, and a plurality of floating blocks 106 made of hard foamed polyurethane materials are arranged at the bottom of the floating island base 107 and used for generating enough buoyancy to support and stabilize the floating part 1; in addition, the floating block 106 made of the hard foamed polyurethane material has the characteristics of excellent mechanical property, good heat insulation performance and good stability, and prevents the problems of heat pollution caused by a heat source of a floating part, shaking and toppling caused by the work of a motor and the like.

Float portion 1 and conveying portion 3 and pass through switching portion 2 and be connected, switching portion 2 includes first switching piece 201 and second switching piece 203, all be provided with the through-hole on first switching piece 201 and the second switching piece 203, be first through-hole 204 and second through-hole 205 respectively, first through-hole 204 and second through-hole 205 through connection, be used for carrying the sewage of handling to the river course bottom, make the device sealed when making can take place coaxial rotation between first switching piece 201 and the second switching piece 203, adopt rotatory rubber seal 202 in this embodiment, set up in two switching piece junctions.

The conveying part 3 comprises a spraying device 301, a balance weight 302, a buoy 303 and a connecting line 304, the conveying part 3 is connected with the second adapter 203 through a guide pipe 305, and the guide pipe 305 is made of a stainless steel corrugated pipe, can be bent and can bear certain axial and radial pressure. The injection apparatus 301 in the conveying part 3 can spray the sewage after being treated at a certain speed and direction after mixing the bottom sewage, because the reverse thrust generated by the injection can be transmitted to the floating part 1 along the stainless steel corrugated pipe 305, the floating part is pushed to move on the water surface, the direction of the movement can be adjusted through the injection direction of the injection apparatus 301, the technical personnel in the field can easily understand that the injection apparatus 301 is utilized to realize that the sewage treatment robot performs the itinerant sewage treatment in a certain water area, and the sediment in the black and odorous river channel is treated on a large scale. In addition, the surface of the spraying device 301 is coated with a polyelectrolyte film layer or a hydrophobic film layer, so that the attachment of surface microorganisms is reduced, the biofouling phenomenon on the surface of the spraying device 301 is prevented, and the movement of the spraying device 301 under water is further prevented from being blocked.

The buoy 303 and the connecting line 304 in the conveying part 3 mainly play a role in limiting the depth of the spraying device 301 in the river channel, and the spraying device 301 can be easily kept at a certain depth in the river channel by adjusting the length of the connecting line 304, so that the situation that the spraying device is stuck in bottom silt and is blocked is avoided. In another embodiment of the present invention, the length of the connecting wire can be dynamically adjusted by the connecting wire length adjusting member, and those skilled in the art can easily understand that the technical goal can be achieved by using a simple buckle and winding device, and the spraying device with the adjustable length of the connecting wire can be dragged out of the bottom sludge by using the lifting motor even if the spraying device is jammed.

In this embodiment, the weight selection of the transportation unit is intended to stabilize the jetting device 301 by the buoyancy of the buoy 303 and the weight of the weight 302, and thus the specific weight needs to be selected after adjustment according to various factors such as the size of the buoy, the buoyancy, the self weight of the jetting device 301, and the like. In another preferred embodiment of the present invention, instead of using a combination of float 303 and connecting line 304, a length of bellows 305 and the weight of adjustment weight 302 are used to stabilize the spray device 301; the length of the bellows 305 mainly changes the submergence depth of the injection device 301, and the weight of the weight 302 can adjust the overall density of the conveying section, typically about 1.0 to 1.1 g-cm ^-3 So that the conveyor 3 together with the float 1 can be kept stable in the water without the conveyor 3 pulling the float 1, increasing the cost of the additional employed float block 106 for keeping the float 1 floating and stable.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.

Claims

1. A sewage treatment robot is characterized by comprising a floating part and a conveying part, wherein the floating part is connected with the conveying part through a switching part and comprises an amorphous silicon solar cell, an electrocatalytic oxidation device, a water pump and a floating island base, a plurality of floating blocks made of hard foamed polyurethane materials are arranged at the bottom of the floating island base, the amorphous silicon solar cell is electrically connected with the electrocatalytic oxidation device and the water pump, the amorphous silicon solar cell, the electrocatalytic oxidation device and the water pump are jointly arranged on the floating island base, the water pump drives water flow in a pulse mode, the water pump is matched with a balance weight suction head and a water pumping pipeline, the conveying part is communicated with the water pump through a pipeline, the tail end of the water pump is connected with a filtering device, the filtering device is arranged in front of the electrocatalytic oxidation device in the water flow direction, the electrocatalytic oxidation device comprises an ozone generator, a micro-device and an electrolysis device, the electrolysis device comprises a first electrode and a second electrode, the first electrode and the second electrode are close to each other, and the electrode is a broken line type electrode; the distance between the polar plates of the first electrode and the second electrode is 2cm, a water flow passage is defined by a gap of the first electrode and the second electrode, and the path length of the water flow passage is more than twice of the distance of the tail end of the water flow passage;

the adapter part comprises a first adapter part and a second adapter part, the first adapter part is provided with a first through hole, and the second adapter part is provided with a second through hole; the first through hole is communicated with the second through hole; the rotary rubber sealing ring is arranged at the joint of the two adapter pieces;

the conveying part comprises an injection device, a balance weight, a buoy and a connecting line, and is connected with the second adapter piece through a stainless steel corrugated pipe.

2. The wastewater treatment robot of claim 1, wherein the first and second electrodes are platinum electrodes.

3. The wastewater treatment robot of claim 1, wherein the floating island base is made of rigid foamed polyurethane.