113results about How to "Zero energy consumption" patented technology

The invention discloses an artificial wetland purifying system for free waterfall aeration. The system consists of multiple stages of stepped artificial wetlands, wherein the gradient of a bed bottom (3) of each stage of wetland bed is between 3 percent and 6 percent; the included angle between a back side wall (5) and the bed bottom (3) is alpha which is more than 90 degrees and less than or equal to 120 degrees; a guide plate (10) is vertically arranged at the upper end of the back side wall (5); a baffle plate (6) with equal width to the wetland bed is vertically arranged on the middle back part of the wetland bed, and partitions the wetland bed into a filler pool (7) and a collecting basin (8); a water flow channel is reserved between the lower end of the baffle plate (6) and the bed bottom (3); and the top end of the back side wall (5) is lower than the top end of the baffle plate (6). The system makes full use of free waterfall aeration and oxygenation, has the characteristics of small floor area, high dissolved oxygen level, good treatment effect, difficulty in causing dead angles and the like, and is particularly suitable for special terrains with gradients.

The invention provides a new flue-cured tobacco leaf concocting method, tobacco products and application. A concocting process comprises the steps of field tobacco leaf harvesting, fermentation treatment, dewatering and drying and the like, fermentation concocting type tobacco products with typical flue-cured tobacco fragrance style, or with a typical air-cured tobacco fragrance style, or with both the flue-cured tobacco fragrance style and the air-cured tobacco fragrance style are obtained through concoction, the demands of the cigarette industry on multiple tobacco raw materials including extraordinary fragrant type tobacco raw materials are met, and the availability of flue-cured tobacco leaves close to the roots, top leaves, abnormal ripe tobacco leaves, tobacco branches, tobacco tops and other tobacco raw materials is improved. Concocted tobacco products can be applied to tobacco formula products or cigarette products, or be used for preparing tobacco extract and tobacco reaction perfume, or be added to tobacco sheets or stem filament products or cigarette products as feed liquid. Zero energy consumption or low energy consumption can be achieved in a concocting process, and the flue-cured tobacco leaf concocting method saves energy, protects environment, and generates good resource and environment benefits.

The invention discloses a wind power generation device for a high-temperature flue gas mechanical cooler, and belongs to the technical field of wind power generation. The wind power generation devicecomprises a base, a box, a heat exchanger, a chimney and a vertical-axis wind turbine; the bottom of the box is connected to the base, and the top of the box is connected with the chimney; The position, close to the chimney, of the box is provided with the vertical-axis wind turbine, and the position, close to the base, of the box is provided with a cold air inlet; and the position, on the upper part of the cold air inlet, on the box is provided with the heat exchanger, and the heat exchanger comprises a high-temperature flue gas inlet, a heat-exchanging tube and a high-temperature flue gas outlet; and the high-temperature flue gas inlet and the high-temperature flue gas outlet are located in the two opposite sides of the box correspondingly. Energy does not need to be externally providedfor cooling high-temperature flue gas, but cooled upward-flowing hot air can be used for generating electricity of the vertical-axis wind turbine, power generation can be conducted while zero energy is achieved, and thus the wind power generation device is worthy of application and popularization.

The invention discloses a coal shaping roller and an automatic shaper applied to transporting coal by trains and relates to a coal shaping roller and an automatic shaper, solving the problems of high labor intensity, incapability of meeting the requirement of railways and low work efficiency existing in the traditional flattening mode as well as the problem of shortfall because the rated weight loaded in the railway wagon cannot be reached. The coal shaping roller comprises two circular truncated cones and a cylinder arranged between the two circular truncated cones, wherein the two circular truncated cones and the cylinder are coaxially arranged. The coal shaping roller is arranged between the tail ends of two cantilever beams; two platform wagon height-adjusting wheels are respectively arranged at two ends of the coal shaping roller; each platform wagon height-adjusting wheel is connected at the tail end of the corresponding cantilever beam; two transitional guide wheels are positioned behind the coal shaping wheel; each transitional guide wheel is connected with the middle of the corresponding cantilever beam; and the outside diameter of each transitional guide wheel is greater than the gap between two sections of carriages. The invention can be used for flattening and shaping coal after the coal is loaded in the railway wagon.

The invention belongs to the technical field of thermal radiation, and particularly relates to a dynamic thermal radiation refrigeration device based on phase change material vanadium dioxide. According to the dynamic thermal radiation refrigeration device based on the phase change material vanadium dioxide, on the basis of the classic metal-medium-metal metasurface structural design, a transition medium layer is introduced to effectively improve the adhesive force of a phase change material vanadium dioxide film; and the whole device is adjusted and controlled to correspond to the peak value of the black body radiance at the room temperature through selection of the medium layer material, and therefore, the technical problem that an existing heat radiation refrigeration device is relatively poor in refrigeration effect is effectively solved. According to the dynamic thermal radiation refrigeration device based on the phase change material vanadium dioxide, when the temperature is higher, energy is radiated outwards through an intermediate infrared 8-14 micron atmosphere window, and sunlight is reflected; when the temperature is lower, energy is hardly radiated outwards, so that the functions of intelligent temperature control and dynamic refrigeration are achieved; the device has the characteristics of intelligent dynamic temperature control, simple structure, convenience in large-area preparation, zero energy consumption, polarization insensitivity and the like; and the device is of great significance in solving the problem of excessive refrigeration and relieving the urban heat island effect, and has application potential in the fields of infrared camouflage and the like.

The invention relates to a polypropylene foaming sheet material preparation method utilizing an ultraviolet light radiation crosslinking technology. The method adopts ultraviolet light radiation to trigger polypropylene grafting and crosslinking so as to improve the melt strength of polypropylene, and can be applied to the development and production of a polypropylene sheet material with a high foaming ratio. The preparation method is characterized in that a special polypropylene foaming sheet material can be produced through an excellent blending technology and an energy-saving, controllable, and continuous ultraviolet light radiation technology, the obtained foaming material after a conventional chemical foaming technology has a uniform pore size, and the foaming ratio can reach 10 to 30 times. Furthermore, the energy consumption is low, the emission is zero, and the operation is simple during the production process; large-scale continuous production can be achieved, the technology controllability is high, and the product quality is stable.

The invention discloses an energy-saving water heater which comprises a solar energy water heater, an instantaneous heating electric heater, a temperature sensor and a water heater electric control unit, wherein the energy-saving water heater also comprises an electric control water quantity control valve and a water heater electric control unit (ECU), wherein the instantaneous heating electric heater is provided with two water inlets and a water outlet, one water inlet is connected to the solar energy water heater; the water heater electric control unit is connected wit the instantaneous heating electric heater, the temperature sensor and the electric control water quantity control valve, and is used for processing a signal transmitted by the temperature sensor, controlling the working states of the control valve and the electric heater, and regulating the water quantity and the water temperature. According to the energy-saving water heater, the traditional household water heater is improved and characteristics of the solar energy water heater and the instantaneous heating electric heater are saved, thus a large quantity of electric energy and water resources are saved; meanwhile, the energy-saving water heater has the advantages of simple structure, low required cost and convenience for operation.

The invention relates to a solar thermally-driven independent temperature and humidity control air conditioning system. The system comprises a first heat exchanger, a second heat exchanger, a desiccant solution storage tank, a film dehumidifier, a regenerator, a condenser, a first throttling valve, an evaporator, a generator, a solar heat collector, a solution heat recovery device and an absorber. The system effectively combines a solar absorption refrigeration subsystem and a film solution dehumidifying subsystem, the solar absorption refrigeration subsystem provides heat required by regeneration of a solution in a dehumidifying system and cold required by cooling and performs heat treatment on air by using produced refrigerant water, and the film solution dehumidifying subsystem performs wet treatment on the air. Compared with the prior art, the system has the advantages that green energy, namely, solar energy, can be fully utilized, independent temperature and humidity regulation and control can be realized, and the system is energy-saving, low in emission and good in regulation and control performance, and the like.

The invention relates to a device and method for restraining vortex-induced vibration of a marine riser through upward-going energy of drilling fluid. The device is composed of a transmission system, a supporting system and flow disturbing rods. The flow disturbing rods are arranged in an axial symmetry mode with respect to the axis of the marine riser. Impellers of the transmission system are mounted in the annular space between the marine riser and a drill column. The impellers are driven to rotate when drilling fluid goes upwards, the impellers drive worms to rotate, the worms then drive worm wheels to rotate, and the worm wheels finally drive the flow disturbing rods to rotate. The flow disturbing rods are supported and fixed through the supporting system. Through rotation of the flow disturbing rods on the two sides of the marine riser, the wake region behind the marine riser is narrowed, detour flow lift force and resistance on the marine riser from ocean currents are lowered, and therefore vortex-induced vibration is restrained. The flow disturbing rods are driven to rotate through kinetic energy generated when drilling fluid goes upwards, externally provided energy is not needed, and the purposes of low cost and zero energy consumption are achieved.

The invention relates to technology for preparing a polyvinylidene fluoride microporous film. The method adopts non-water-soluble ester pore-forming additives, changes the traditional film preparation technology of immersion precipitation phase separation, and is characterized in that N,N-dimethylformamide is selected and used as a solvent, dimethyl phthalate, dibutyl phthalate and dioctyl phthalate are selected and used as pore-forming additives, and dibutyl phthalate is preferable. Compared with water-soluble inorganic salt micromolecules like lithium chloride, ammonium chloride and sodium nitrate (NaNO3), as well as low-molecular-weight water-soluble polyethylene glycol, polyvinylpyrrolidone, glycerin and the like, the film prepared by adopting the non-water-soluble ester pore-forming additives has the advantages of very regular microporous structure, even micropore distribution, narrow pore size distribution of micropores, and controllable microporous structure. In addition, the preparation method realizes low energy consumption and zero emission in a production process, the operation is simple, large-scale continuous production can be realized, the technology controllability is high, and the product is stable in quality.

The invention relates to a solar power driving air condition system integrating an adsorption heat pool and film solution dehumidification. The system includes a film solution dehumification sub system and a solar power absorbing cooling sub system. The film solution dehumification sub system includes a dehumidifying solution circulation loop and an outdoor air dehumidification heat exchange channel. The solar power absorbing cooling sub system includes a solar power heat collector, a water tank working medium water circulation loop and a refrigerant circulation circuit. Cold medium water generated by the solar power absorbing cooling sub system realizes heat treatment of air. The film solution dehumification sub system realizes dehumification treatment of air. Heat energy required by solution regeneration in the film solution dehumidification sub system and cold energy required by cooling are both provided by the solar energy adsorption heat pool. The drive heat source of the system can be solar energy or other low-grade heat source. Requirements for energy conservation and environment protection can be met at the same time of realizing independent adjustment of air humidity and temperature and continuous operation of the system. The air condition system has a good development prospect.

A process of using seawater to scrub and clean exhaust gas of engine in ocean engineering with zero energy consumption includes steps of leading the exhaust gas of engine into a scrubbing tower of a scrubbing and cleaning system, pumping seawater into the scrubbing tower with a seawater pump, scrubbing the exhaust gas of engine with the seawater in the scrubbing tower, and discharging clean exhaust gas and scrubbing seawater out of the scrubbing and cleaning system after scrubbing, wherein a step of recycling thermal energy of the scrubbing seawater is carried out before the scrubbing seawater is discharged out of the scrubbing and cleaning system, and in the step of recycling thermal energy, the thermal energy of the scrubbing seawater is recycled and used as the power of the seawater pump.

The invention relates to a magnetic-field-strengthening iron-carbon-microelectrolysis method for treating organic pollutants in landfill leachate. The method comprises the steps of externally applying a magnetic field to the surrounding of a reaction tank, adding zero-valent iron and granular activated carbon into organic matter polluted wastewater in the reaction tank, and purifying the water under external-force stirring. According to the method, the organic pollutants in the landfill leachate can be effectively removed, the utilization ratio of the iron and the carbon is increased, the consumption of reagents is lowered, and the rate of reaction is accelerated. Once the reaction starts, the operation is simple and convenient and is easy to control; and the method is economical.

The invention discloses a method for recovering copper and tin in waste tin-plated and copper-coated plates. The waste tin-plated and copper-coated plates are crushed and sorted to obtain copper tin powder and nonmetal powder; the copper tin powder is fed in leaching liquid twice; mixtures are leached through solid-liquid separation to obtain metal copper powder and tin removing liquid; the tin removing liquid is hydrolyzed; the solid-liquid separation is performed on hydrolyzed products to obtain tin hydroxide; and the tin hydroxide is dried and roasted to obtain tin dioxide powder. The copper and the tin in the waste tin-plated and copper-coated plates are recovered with high value in forms of the metal copper and the tin dioxide. The method is simple in process flow, can recycle raw materials and by-products in the production process, achieves zero emission, low energy consumption, economy and environmental protection, and is more common in raw material and equipment, higher in recovery rate of the metal tin, low in energy consumption, lower in equipment requirement and convenient to industrially popularize.

The invention relates to an energy complementary passive house of Trombe wall and soil-air heat exchange system based on energy storage, and the energy complementary passive house comprises a soil-airheat exchange system, a Trombe wall cavity, a phase change energy storage external wall hot water system, a phase change energy storage internal wall and a building main body. According to the invention, the Trombe wall cavity and the soil-air heat exchange system are coupled and applied for the first timely, fresh and high-quality cooling air can be provided indoors without using a fan in summer, zero energy consumption of a building is realized, and more comfortable air supply temperature can be provided indoors in winter. Different phase change energy storage units are applied to the system, which can not only improve the heat exchange efficiency of the system and reduce the fluctuation of indoor temperature, but also realize the purpose of intermittent operation of the air heat exchange system, and the efficiency of the system is prevented from being obviously reduced due to long-term continuous operation. In addition, the system can be used as a heat-generating end to prepare domestic hot water in summer, and provide a suitable supply air temperature indoors when solar radiation is insufficient in winter.

The invention discloses a mobile ecological restoration device and method for riverway black and odorous water. The device includes a solar energy device, an ecological floating bed, an aeration device, a microorganism film-hanging device and an underwater flow-pushing device; the solar energy device is electrically connected with the aeration device and the underwater flow-pushing device and provides power for the aeration device and the underwater flow-pushing device; the flow-pushing device pushes the ecological floating bed to freely move in a water body. The device has the advantages of low cost and simple structure, adopts an ecological technology to purify the water body from multiple dimensions, and remarkably improves the purification efficiency of the eutrophic water body in rivers and lakes.

The invention discloses a zero energy deep seawater desalting all-in-one pump comprising a freshwater area, a film separating system, a permeable skeleton, a freshwater inlet, an electric diving pump, a case, a freshwater outlet and an electric diving pump power line. The zero energy deep seawater desalting all-in-one pump is put into seawater at certain depth; because of natural pressure of seawater, freshwater content in the seawater enters the freshwater area from a film separating system; the electric diving pump arranged in the freshwater area pumps freshwater out of the freshwater area, and the freshwater is transported into freshwater storage equipment on the sea surface by a pipeline, but salt and impurities in seawater are trapped from the film separating system. The invention utilizes the natural pressure of seawater to realize zero energy consumption for seawater desalting process, does not need to consume energy and does not need to use other power.

The invention relates to wind-power water lifters, in particular to a device using wind power to perform water lifting irrigation. The device mainly comprises a horn-shaped wind gathering cover, a wind-power impeller, a belt, a reducer, a drive power wheel, a driven power wheel, straight tubes, pistons, a piston chain and a cup-shaped one-way valve. Winds are gathered in the wind gathering cover and blown towards the wind-power impeller to drive the reducer, and power is output through the drive power wheel to drive the piston chain to rotate along with the pistons; when the left pistons moves up along the inner wall of the corresponding straight tube, a steel ball is located at the small-opening end of the cup-shaped one-way valve to limit the downward moving of water in the cup-shaped one-way valve, and the water moves up along with the pistons; the pistons circulate along with the chain to lift the water in the left straight tube to the ground for irrigation. The device has the advantages that wind power is gathered, good wind power utilizing effect is achieved, and high power output is achieved; the whole device is free of energy consumption and environmentally friendly during operation.

The invention discloses a culture method of haematococcus pluvialis species. The culture method comprises the following steps: 1) heating haematococcus pluvialis species culture water to be 60 DEG C or above in a solar heating mode; 2) rinsing a haematococcus pluvialis species culture device by using the hot water obtained in the step 1); 3) discharging out the rinsing water, further filling the hot water obtained in the step 1) into the haematococcus pluvialis species culture device, when the water is naturally cooled to be less than 28 DEG C, preparing a culture medium in the haematococcus pluvialis species culture device, and inoculating haematococcus pluvialis species to start the species culture process. The applicant of the invention finds that when the haematococcus pluvialis species culture system is sterilized by using the hot water generated by using the solar energy, and meanwhile the cooled solar hot water is used as the haematococcus pluvialis species culture water, not only is the sterilization requirement on the haematococcus pluvialis species culture system met, but also the adverse influence to the haematococcus pluvialis species caused by biological contamination can be effectively controlled.

The invention discloses a preparation and degradation method of thermosetting epoxy resin capable of being degraded by gamma-ray irradiation, and belongs to the technical field of gamma-ray irradiation degradation epoxy resin. The invention aims to solve the technical problems that the existing epoxy resin material is harsh in degradation condition, and the excellent use performance and degradation performance of epoxy resin are difficult to consider at the same time. According to the method, gamma-ray irradiation degradation is adopted; the degradation method is applied to degradation of thermosetting epoxy resin and epoxy resin composite materials. A stable N-N bond or an N-O bond connected with a conjugated structure is introduced into an epoxy resin curing agent structure, and is introduced into an epoxy resin cross-linked structure through a cross-linking curing reaction, so that the N-N bond or the N-O bond in a cross-linked network is preferentially broken under a gamma ray irradiation condition, and the purpose of degrading thermosetting epoxy resin is achieved. According to the gamma-ray irradiation degradation method, zero energy consumption is truly achieved, and harsh degradation conditions such as high temperature, high pressure, strong acid and strong alkali are not needed.

The invention discloses an auxiliary device for humidifying and purifying the air conditioner comprises an air conditioner. The device comprises the air conditioner, a transparent water storage tank is arranged above the indoor unit of the air conditioner, a movable water tank is arranged below the air conditioner indoor unit, a condensate water discharge pipe of the air conditioner indoor unit is connected with the interior of the water tank, and is characterized in that the water storage tank is connected with the water tank through an upper water pipe, a piston type water pumping device is arranged on the upper water pipe, the water storage tank is connected with the rotary auxiliary flow adjusting mechanism through a water distribution pipe i, a flow control valve is arranged on the water distribution pipe i, the rotating auxiliary flow adjusting mechanism is connected with the water distributor through a water distribution pipe II, a wet film is arranged at the water outlet of the water distributor, and the water distributor and the wet film are located at the air outlet of the indoor unit of a re-air conditioner. The air conditioner has the advantages that the layout and the structure of the air conditioner do not need to be changed, the water injection amount of the humidifying film is adjusted by means of air outlet of the air conditioner, so that the humidity is adjusted, no extra energy consumption is needed, the air is humidified and purified, the structure is simple, the energy is saved, and the cost is low.

The invention discloses an optical fiber lighting intelligent illumination system. An MSP430F149 single-chip microcomputer is connected with a direction detection module, a voltage stabilization circuit, a charging and discharging switching circuit and a transmission device. The transmission device is connected with a lightning device which is connected with a light guide device. The voltage stabilization circuit is connected with the direction detection module and the charging and discharging switching circuit. The charging and discharging switching circuit is connected with an LED illumination module, a switch power supply module, a storage battery A, a storage battery B and a solar charging controller. The solar charging controller is connected with a solar cell panel. The direction detection module detects the deviation angle, relative to sunlight, of the lightning device. The single-chip microcomputer receives signals detected by the direction detection module and drives a pan-tilt of the transmission device to act so that the lighting device can be accurately aligned with the sun. Meanwhile, charging and discharging switching is achieved by controlling the charging and discharging switching circuit according to the electricity amounts of the storage batteries. The optical fiber lighting intelligent illumination system has the advantages that cost is low, and zero energy consumption is achieved.

The invention relates to a device and method for realizing undersea oil pipeline flow damping through vortex-induced vibration. The device is composed of a vibration system, a magnetic field system and an electrogenic heat tracing system. The vibration system is composed of an outer barrel, supporting plates, supporting lantern rings, springs and long bolts and is used for producing vibration responses under the ocean current action. The magnetic field system is composed of magnet clamping grooves and magnets and arranged on the wide supporting plate of the inner wall of the outer barrel and used for constructing a magnetic field. The electrogenic heat tracing system comprises wires, an electrical conductor layer and an inner insulation layer, and an oil pipeline is transformed to be of a six-layer pipeline structure which is composed of a steel pipe, the inner insulation layer, the electrical conductor layer, the wires, a heat preservation layer and an outer insulation layer from inside to outside in sequence. According to the device for realizing undersea oil pipeline flow damping through the vortex-induced vibration, the wires are driven by the vibration to cut magnetic induction lines under the ocean current action, and heat generated by electricity enables the viscosity and the resistance of an oil flow to be reduced, so that the low cost and zero energy consumption are achieved.

The invention relates to a method for treatment of mercury-containing wastewater by a superconducting magnet magnetic field intensified sulfuration process. The method adopts a completely mixed reactor, a metal sulfide is added into mercury-containing wastewater, a magnetic field is applied around the completely mixed reactor to realize rapid precipitation reaction of the metal sulfide and mercury, so that the water can be purified. According to the invention, under the action of the superconducting magnet strong magnetic field, the conductivity of the solution increases, the electric potential decreases, the flocculating settling speed and filtration speed of sulfide residue are enhanced, and the utilization rate of sulfurizing agent is also increased. The method for treatment of mercury-containing wastewater by the superconducting magnet magnetic field intensified sulfuration process provided by the invention can be used for removal of mercury pollutants in groundwater, industrial wastewater and other water bodies.

The invention belongs to the field of ash bucket blocking resistance of a static electricity and cloth bag dust removal system, and discloses an ash bucket anti-blocking and heat tracing-free system for the static electricity and cloth bag dust removal system. The system comprises a nanometer ceramic coating special for inner wall coating of an ash remover ash bucket. An anti-blocking machine is additionally arranged at an inlet of a fluidization air pipeline of the ash remover ash bucket. An electric charge quantity detecting and controlling system is mounted at the ash remover ash bucket. Astandby blocking clearing device is mounted on the outer wall of the ash remover ash bucket. A traditional heating and anti-blocking mode is replaced, energy consumption is little, high temperature resisting and corrosion resisting are achieved, abrasion resistance is high, sticking resistance is achieved, the service life is ensured to be as long as eight years after installation.

The invention discloses a method for attaching a graphene photocatalyst on the surface of artificial water grass. The method includes the steps of artificial water grass cleaning, preparation of artificial water grass pretreatment liquid, artificial water grass pretreatment, preparation of graphene photocatalyst solution, artificial water grass coating and drying. The method is simple to operate.The artificial water grass treated by the method not only can beautify the water surface landscape as ornamental water grass, but also has a water quality purifying function, and the artificial watergrass can be reused, is simple to arrange and has wide application prospect.

The invention discloses a natural lighting and ventilation integrated device for a tunnel and a manufacturing method thereof. The natural lighting and ventilation integrated device for the tunnel comprises natural lighting-ventilation towers located outside the tunnel, natural lighting-ventilation walls located inside the tunnel and natural lighting-ventilation pipes, wherein the natural lighting-ventilation pipes are connected with the natural lighting-ventilation towers and the natural lighting-ventilation walls. According to the manufacturing method of the natural lighting and ventilation integrated device for the tunnel, the natural lighting-ventilation pipes are manufactured first, the natural lighting-ventilation pipes are formed by prismoid straight pipe units in a welding mode, and the prismoid straight pipe units are formed by an iron sheet with a single surface galvanized or silvered in a rolling mode; the natural lighting-ventilation towers are then installed, each natural lighting-ventilation tower outside the tunnel is in a prismoid shape, the main bearing framework of each natural lighting-ventilation tower is of a light-weight steel structure, and a transparent water-proof ceiling is arranged on the top of each natural lighting-ventilation tower and the outlets of the natural lighting-ventilation pipes are arranged in the peripheries of the natural lighting-ventilation towers and on the top surfaces of the natural lighting-ventilation towers; the natural lighting-ventilation walls are installed finally and are hung on the top of the interior of the tunnel, the main bearing framework of each natural lighting-ventilation wall is of a light-weight steel structure, and the inlets of the prismoid straight pipes are arranged in the surfaces of the natural lighting-ventilation walls. The natural lighting and ventilation integrated device for the tunnel has the advantages of being simple in structure and capable of achieving zero energy consumption through natural lighting and ventilation.

The invention discloses a preparation method of a copper zinc tin sulfur selenium nanocrystal. Novel complex ions are designed and reacted at room temperature to prepare the water-soluble Cu2ZnSn(S[1-x]Sex)4(CZTSSe) nanocrystal ink by one step, wherein the selenium content x is greater than or equal to 0 and less than or equal to 0.65. The preparation method is carried out at room temperature without heating, so the energy consumption is zero. The solvent is a water solution which is free of other organic solvents, so the method has the characteristics of environment friendliness, simple preparation process and low cost.

The invention relates to a hydraulic power oxygenation constructed wetland, belonging to the technical field of constructed wetland, waterbody ecosystem restoration and sewage treatment. A plurality of monolater modules of the hydraulic power oxygenation constructed wetland are in a stepped shape to construct the hydraulic power oxygenation constructed wetland; and each level constructed wetland is composed of a water intake device, a wetland main body and a water discharging device. The wetlands in the adjacent two layers are linked with a water intake and discharging connection device so asto ensure that the processed waterbody flows through a first level, a second level...nlevel hydraulic power oxygenation constructed wetland successively and is exhausted after carrying out the n numbered level processing. The invention solves the problems of low dissolved oxygen level of constructed wetland matrix, sludge plugging of the matrix, unstable operation and the like, improves microorganism activity of the bed body, and forms a new sewage processing technology with high efficiency, stability, energy saving and perennial operation. The invention is suitable for the aspects of distributed domestic sewage processing, non-point source control, tail water processing of sewage plant, the waterbody ecological restoration engineering and zoology slope protection.

The buoyancy constant pressure fertilizer and its application method belong to the technical field of pesticides, liquid fertilizers and water plant dosing equipment. The fertilizer applicator is composed of a sealed tank, a floating plate and a fertilizer bag; the top plate of the closed tank is provided with an inlet and an exhaust valve; the bottom plate of the closed tank is provided with a water inlet pipe, a fertilizer outlet pipe and a drain pipe. There are several semicircular guide rods arranged symmetrically on the inner wall of the tank body. The floating plate can slide up and down in the airtight tank through the guide rods, and cannot rotate. Between the plate and the top plate of the closed tank, the upper end of the fertilizer bag is connected and fixed with the feed port through the sealing flange, and the lower end of the fertilizer bag is connected and fixed with the through hole on the floating plate through the threaded sealing cover. The invention has a novel structure and a clear working principle. Since the buoyancy is constant and the fertilizer solution flows continuously, the fertilization is uniform, zero energy consumption, and will not cause loss of water head in the pipeline. It is especially suitable for low-pressure drip irrigation fertilization systems, and has great practicality and socioeconomic benefits.