122results about How to "No running costs" patented technology

The invention discloses an industrial application of an MVR (mechanical vapor recompression) crystallizing evaporator technology in the production of sodium sulfate and sodium chloride in Huaian, Jiangsu, and relates to an improvement of a salt and sodium sulfate coproduction evaporation technology, belonging to the technical field of chemical three-waste treatment and utilization, and in particular to an application of an MVR crystallizing evaporator in a sodium sulfate and sodium chloride separation technology. The application is mainly technically characterized in that sodium sulfate liquid is concentrated by the MVR crystallizing evaporator, the sodium sulfate is produced at high temperature, and the sodium chloride is produced at low temperature. According to the invention, the mechanical re-compressed vapor is evaporated, concentrated and crystallized at 90-100 DEG C to obtain sodium sulfate, and the re-compressed vapor at a low temperature of 55 DEG C is concentrated and crystallized to obtain sodium chloride. According to the invention, the application of the MVR technology to the concentration of sodium sulfate liquid is realized, the sodium sulfate is produced at high temperature, and sodium chloride is produced at low temperature. The application disclosed by the invention is an environmental protection project which saves energy, reduces emission and avoids waste gas, waste water and waste residue.

The invention discloses a sewage treatment method adopting a baffle plate and a membrane-aeration coupling device. A coupling reactor is formed by putting a well-trained membrane-aeration assembly in a third upstream compartment of a stably operating anaerobic baffle plate reactor. The process flow comprises the following steps of: carrying out an anaerobic reaction on sewage in a first upstream compartment of the anaerobic baffle plate reactor; carrying out an anaerobic reaction in a second upstream compartment of the anaerobic baffle plate reactor; carrying out an anaerobic reaction in the third upstream compartment of the anaerobic baffle plate reactor; carrying out an aerobic reaction and an anaerobic reaction in the membrane-aeration biological membrane assembly; carrying out an anaerobic reaction in a fourth upstream compartment of the anaerobic baffle plate reactor; and obtaining processed fresh water. By coupling the anaerobic baffle plate reactor with the membrane-aeration biological membrane reactor, the invention reaches the oxygen utilization rate approaching 100 percent, is suitable for growing and propagating nitrobacteria which grows slowly, improves the impact load resisting capacity of the membrane assembly, saves the equipment investment and operation cost and is easy to reach operation parameters needed for operation.

The invention relates to the technical field of oil purification equipment, in particular to a centrifugal oil purifying machine. The centrifugal oil purifying machine is provided with a central shaft, a centrifugal cylinder, a front end cover, a rotating framework, a disk type guide plate, an oil collecting impeller, a driving device, an oil outlet pipe, an oil inlet pipe and an oil tank, and is characterized in that the disk type guide plate is made of titanium alloy material, involute-shaped convex edges are radially uniformly distributed on the surface of the disk type guide plate, oil-blocking convex edges are arranged between the involute-shaped convex edges, the oil-blocking convex edges are in ladder-like distribution, at least two drainage holes are arranged in the positions with large diameter below a cylinder body of the centrifugal cylinder in the centrifugal oil purifying machine, a water storage cavity is arranged above the cylinder body of the centrifugal cylinder, a drainage channel is arranged in the wall of the centrifugal cylinder, the drainage holes are communicated with the water storage cavity via the drainage channel, the water storage cavity is communicated with a water outlet guide pipe, and water sealing devices are arranged in the drainage holes. Due to the adoption of the structure, the centrifugal oil purifying machine has the advantages of novel structure, strong pollution discharge capability, safety in operation, stable performances, long service life of oil, no operation cost, no consumption of filter material, obvious separation effect and the like.

The invention relates to a fault isolation and recovery method based on a micro loss combined mechanical direct current breaker. The adopted breaker comprises n terminals, n through-flow branches andone commutation branch; wherein the n through-flow branches are parallel with the one commutation branch, and each through-flow branch is divided into an upper bridge arm and a lower bridge arm bounded by a connecting point; each terminal is electrically connected with the connecting point of a through-flow branch; the upper bridge arm of each through-flow branch comprises one auxiliary mechanicalswitch, and the lower bridge arm comprises one isolating switch and one semiconductor switch module connected in series; and the commutation branch comprises one main mechanical switch, one high-voltage arm capacitor and one low-voltage arm capacitor connected in series. The fault isolation and recovery methods comprise the cut-off of the fault current, permanent fault quick reclosing and temporary fault quick reclosing.

The invention discloses a biomimetric eco-pond system for the deep treatment of wastewater from breeding. A treatment method comprises a step that after being subjected to anaerobic digestion treatment, wastewater from breeding first enters a water distribution tank for accumulation and water distribution, then enters a sank filter tank from a perforation on the bottom of the water distribution tank and finally enters a pond body after passing through a water distribution aeration slope for short-range purification, wherein the bottom of the pond body is provided with artificial float grass. A treatment system comprises the water distribution tank, the sand filter tank, the water distribution aeration slope, the pond body, an artificial float grass belt, water plants and a floating body and mud collecting well, wherein the water plants on the surface of the water in a pond are planted on floating bodies, so that in the growth process, the water plants can fully absorb carbon, nitrogen and phosphor in the wastewater and conveys oxygen from the leaves of the plants to the roots of the plants through the respiration of the plants to form a micro aerobic environment at a root part for further simulating the decomposition of organic substances and the growth of nitrobacteria, thereby removing nutrients such as nitrogen and phosphor in the wastewater and improving the overall aesthetic value of the pond body.

The object of the invention is to provide a water-circulating sterilizer that uses no chlorine-base bactericidal agents, has no effect on the human body with no change of water quality, with no running cost and completely free from maintenance while effective sterilization is possible within shorter time.The invention provides a water-circulating sterilizer disposed in a pipeline of circulating water for sterilizing Legionella pneumophila surviving in circulating water, wherein plural sets of a first, second and third alloy plates are sequentially disposed from a water inflow port, the first alloy plate comprises an alloy containing at least copper and tin, the second alloy plate comprises an alloy containing at least silicon and titanium, and the third alloy plate comprises an alloy containing at least iron, molybdenum and manganese.

A bi-directional spiral material-discharging bin is composed of a material level instrument, a material-discharging bin body, a material-pushing bin, a motor transmission device, a screw and a blow-off valve. The upper portion of the material-discharging bin body is cylindrical, the bottom of the material-discharging bin body is conical, a cone base is provided with a material outlet, the material-pushing bin is cylindrical and is provided with an upper feed port and a lower discharging port, the material-pushing bin end of the bi-directional screw is spiral in the forward direction, the tail end of the material-pushing bin is spiral in the reverse direction, the material level instrument for measuring the height of an accumulated material in the material-discharging bin body is fixedly installed in the material-discharging bin body, an upper feeding port flange on the material-pushing bin is in sealed connection with a cone base material outlet flange of the material-discharging bin body in a bolted connection mode, and the blow-off valve is in sealed connection with a material-pushing bin lower discharging port flange in a bolted connection mode. The problem that due to the inborn inherent defects of a traditional material-discharging bin in structural design, the traditional material-discharging bin is complex in structure and large in volume is large, easily-damaged parts are many, the reliability is poor, the traditional material-discharging bin does not save energy and is not environmentally friendly, intermittent discharge is caused, and large discharging impact is caused is solved well.

The invention discloses a heat exchange device and an energy-saving net used in the heat exchange device. The heat exchange device comprises an air suction opening and an air exhaust opening. Net-shaped energy-saving nets / a net-shaped energy-saving net are / is arranged in the position of the air suction opening and / or the position of the air exhaust opening. Each energy-saving net is made of ceramic powder and a base material, wherein the ceramic powder comprises a blank and glaze, and the base material is resin or rubber. Due to the fact that the energy-saving nets are arranged on one side or the two sides of the air suction opening and one side or the two sides of the air exhaust opening, the heat exchange efficiency of the heat exchange device can be improved, the power consumption of the heat exchange device is reduced, and the purpose of reducing energy consumption is achieved.

The invention discloses an alcohol-base fuel ejecting self-adaptive air distributing burner which comprises a burner body and an ejecting device. The burner body is internally provided with a burning chamber; the burning chamber is provided with a spiral vaporizer; the spiral vaporizer is provided with a gas burning agent outlet and a liquid burning agent inlet; the ejecting device is provided a burning-agent spraying nozzle, an sucking section, a mixing section, a diffusing section and a contracting section; the burning-agent spraying nozzle and the ejecting device are coaxially arranged on the joint of the burning chamber in sequence; the burning-agent spraying nozzle is arranged on the inlet of the sucking section of the ejecting device through a burning-agent spraying nozzle support; the gas burning agent outlet leads to the inlet end of the burning-agent spraying nozzle; the length ratio of the mixing section, the diffusing section, the contracting section and the burning chamber is 5:5:1:10; and the diameter ratio of the sucking section, the throat of the ejecting device, the outlet of the diffusing section, the outlet of the contracting section and the burning chamber is 2:1:1.8:1.4:5.2. Due to the optimization of the ratio of the ejecting device and the structure of each section of the burning chamber, the self-adaptive air distribution is realized, and stable and reliable burning is achieved.

The invention provides a water-saving device capable of collecting domestic wastewater automatically for toilet flushing. The water-saving device comprises outer split water tanks, auxiliary split water tanks, a central split water tank and a hollow cylinder common shaft, wherein water stop edges are arranged at the edges of the outer split water tanks, the auxiliary split water tanks and the central split water tank, and a handle and a through hole are formed in one side of each of the outer split water tanks, the auxiliary split water tanks and the central split water tank; and the outer split water tanks, the auxiliary split water tanks and the central split water tank are integrally connected in a sleeving manner through the hollow cylinder common shaft. The water-saving device flushes a flush toilet automatically through recovering bath and laundry wastewater, so that reutilization of the wastewater is achieved, and the precious water resource is saved; and the water-saving device is designed into split-type water tanks which are placed on the ground directly, accordingly, space is not occupied, meanwhile, irregular bulges are arranged on the surfaces of the water tanks, and the foot bottom massage function is attached.

The invention provides a polluted air purifying system and a work method thereof. The system has an advanced filter system to eliminate toxic emissions in exhaust gas. A new technology is used to capture toxic substances emitted from a pollution source or a chimney of a fire coal boiler, a nano-technology and advanced chemical reactions are used to remove pollutants in the exhaust gas, and principles of the interaction between the gas and a liquid and the interaction between the gas and a solid are applied, so a clean gas is finally emitted, and sulfuric acid and nitric acid generated in the above reaction process are recovered to make a filtering recovery system become beneficial circulation. The polluted air purifying system has a low cost, and benefits for popularized use.

A solar deinsectization device is composed of a bracket, trap lamps, a high voltage net , an insect collecting bag and a storage battery; the high voltage net is arranged on the periphery of the trap lamps, the insect collecting bag is arranged on the lower end of the high voltage net, wherein a hanger frame is arranged on the upper part of the bracket; the storage battery, the trap lamps and the high voltage net are all connected with the hanger frame, the storage battery is connected with the trap lamps through conducting wires, a solar panel is arranged on the upper end of the bracket and is connected with the storage battery through conducting wires. The invention adopts the solar panel for supplying power, each trap lamp adopts independent solar power supply so that long-distance power transmission line is not needed, and the power lines and wire poles are also saved. The cost is saved and the wires are not damaged, and the possible electric shock accidents are also prevented.

The invention belongs to the technical field of air purifying, and discloses a superposed film photocatalyst for photochemical purifying gas, a preparation method and application thereof. The catalystis of a heterogeneous multi-layer structure, wherein a layer of carriers is uniformly adhered on a substrate, and a layer of active ingredients is uniformly loaded on the carriers. A chemical gas-phase deposition method is adopted for uniformly depositing carrier precursors which correspond to the carriers on the surface of the substrate material, and roasting treatment can be performed to form acarrier film; a deposition-precipitation method is utilized for loading the active ingredients onto the carrier film; and the activation is performed to obtain the superposed film photocatalyst adhered on the substrate. The superposed film photocatalyst or a sticker thereof is put into air atmosphere, and volatile organic substances in air are removed through photocatalysis under certain temperature, humidity and light conditions. The method can be used under the room-temperature normal-pressure conditions, is free of secondary pollution and operation cost, and is suitable for an indoor and outdoor place. Compared with a conventional powder type photocatalyst coating, the catalyst is greatly reduced in dosage, and the cost is remarkably reduced.

The invention discloses a supersonic wave-ozone-based flue gas desulphurization and denitration device. Air goes through a first valve and then enters a first dryer, the first dryer and a plasma ozone generator are connected by a flowmeter, the plasma ozone generator has two output paths, one path goes through a third valve and then is orderly connected to a second dryer and a first ozone concentration sensor, the other path goes through a second flowmeter and then is orderly connected to a second valve and a flue gas reaction chamber, flue gas is input into the flue gas reaction chamber, an ultrasonic generator is arranged in the flue gas reaction chamber, liquid water orderly goes through a forth valve, a third flowmeter and an ultrasonic oscillator and then is fed into the flue gas reaction chamber, through ultrasonic wave activation action on water and ultrasonic wave mass transfer enhancement effects, when flue gas and ozone go through water mist subjected to ultrasonic treatment and then enter the reaction chamber, gas and water mist in the reaction chamber are subjected to activation under ultrasonic wave action and produce a lot of hydroxyl radicals and other active particles and SO2 and NOX in the flue gas are removed.

The invention relates to a compound deep purification ecological floating bed with an external carbon source and a purification treatment method thereof. The purification ecological floating bed structurally comprises a floating bed frame, an A bamboo raft, a geogrid, a polystyrene board, a plant, a nylon cable tie, a spherical framework, a gauze element, a starch / PHB (Poly-beta-hydroxybutyrate) blend, a fixing rod, a cuboid-shaped gabion and a B bamboo draft, wherein the A bamboo draft and the B bamboo draft are fixed onto the frame through iron wires; the plant 5 is fixed onto the polystyrene board; the polystyrene board is wrapped with the geogrid; the geogrid is fixed onto the frame through the nylon cable tie; a suspension rope is tied to the lower part of the geogrid; the starch / PHB blend is wrapped with the gauze element; the starch / PHB wrapped with the gauze element is placed into the framework; the framework is fixed onto the fixing rod; and the cuboid-shaped gabion is fixed onto the frame through iron wires. The compound deep purification ecological floating bed with the external carbon source has the advantages that the materials are easily available, cost is low, purification efficiency is high, effects are obvious, and management is convenient.

The invention discloses a solar air water-collecting device. The solar air water-collecting device comprises a condenser, a refrigerating mechanism and an air heating mechanism, wherein the condenser is used for condensing water in air. The inlet of the condenser is connected with the outlet of the refrigerating mechanism through a pipeline, the outlet of the condenser is connected with the inlet of the refrigerating mechanism through a pipeline, and the air heating mechanism is arranged beside the condenser. The condenser is a heat exchanging plate which at least comprises a bottom plate and a surface plate, a heat exchanging cavity is sealed between the bottom plate and the surface plate, and a plurality of bonding parts attached to the inner surface of the bottom plate and the inner surface of the surface plate are formed in the heat exchanging cavity. The solar air water-collecting device has the advantages that no pollutant is discharged, the solar air water-collecting device is environmentally friendly, energy is saved, almost no operation cost exists, the structure is simple, installation is easy and convenient, the solar air water-collecting device can be widely applied to seaside buildings or offshore platforms and the like to condense water and produce plain water by fully utilizing the temperature difference on the water surface, and the solar air water-collecting device can be used in the arid desert areas to produce plain water.

The invention discloses an in-situ treatment technology for a black and odorous water body. A controlled release bacteria product and artificial seaweeds are simultaneously fed to a to-be-treated black and odorous water body at a set ratio, wherein the controlled release bacteria product is a solid product with a porous structure and is prepared from the following components in parts by weight: 25-45 parts of volcanic ashes, 20-30 parts of flyash, 10-20 parts of cellulose, 0.5-1 part of lauryl sodium sulfate, 5-15 parts of gypsum and 15-30 parts of composite bacteria liquid, wherein the composite bacteria liquid comprises the raw materials by viable counts: (1-2)*10<9>CFU / mL of photosynthetic bacteria, (3-4)*10<9>CFU / mL of nitrifying bacteria, (2-3)*10<9>CFU / mL of denitrifying bacteria, (4-6)*10<9>CFU / mL of ammonifiers and (5-10)*10<9>CFU / mL of phosphorus accumulating bacteria. For treatment of the black and odorous water body, the homemade controlled release bacteria product is selected to be combined with the artificial seaweeds after soaking the bacteria liquid, so that the in-situ treatment technology is high in treatment efficiency, small in occupied land, low in investment cost, free of energy consumption, free of operation cost, low in sludge quantity and high in anti-shock loading capability, and a system is stable and long in service life.

The invention belongs to the technical field of air purification and provides a photocatalytic air purification sticker preparation method. A photocatalyst is prepared according to a solution impregnation method and applied to the surface of a single side of a substrate film subjected to plasma treatment, and after activation of a photocatalyst coating, the other side of the substrate film with the photocatalyst coating is provided with a sticker adhesive function, so that a photocatalytic air purification sticker is obtained. The photocatalytic air purification sticker is put in an air atmosphere to realize photocatalytic oxidation for removing volatile organic compounds in air under certain temperature, humidity and illumination conditions. The method can be carried out under normal-temperature normal-pressure conditions without secondary pollution and operating cost and is suitable for indoor and outdoor places. The photocatalytic air purification sticker has advantages of convenience in replacement and removal due to catalyst inactivation and durability improvement due to a reinforcement interface of the substrate film and the catalyst coating after surface treatment.

The water quality improving device includes float housing and cavity as main body inside the float hood with proper interval and support ribs in between. The float housing is provided with water inlet in the lower end. The cavity has power system with motor connected to the central shaft, motor support on the inner wall of the cavity, impeller connected to the central shaft and inside the water inlet of the float housing. The rotating impeller makes water circulate from bottom to top for increasing dissolved oxygen and sterilizing with ultraviolet ray of sunlight.

The invention relates to a treatment method and a prevention and treatment facility of bad air of an underground rainwater / sewage pipe network. The treatment method comprises the following steps: 1, arranging an air flow gravity cylinder, wherein the air flow gravity cylinder is vertical arranged on ground; 2, arranging a communicating pipeline, wherein the communicating pipeline is arranged at the bottom of the air flow gravity cylinder for directly or indirectly communicating the underground rainwater / sewage pipe network to the air flow gravity cylinder; 3, reconstructing a far end of the underground rainwater / sewage pipe network communicated with the communicating pipeline into an open pipeline orifice. A negative pressure type air forcible suction effect can be produced in the underground rainwater / sewage pipe network to form air directional forcible flow, so that the bad air in the rainwater / sewage pipe network is sucked and discharged into an upper atmosphere layer, the bad air is not stored or produced in the entire underground rainwater / sewage pipe network, and the potential safety hazard of burning explosion existing in the underground rainwater / sewage pipe network is also eliminated.

The invention provides a direct wallboard radiation heating system employing buried gravity heat pipes. The heating system comprises multiple groups of buried gravity heat pipe radiating units, wherein each radiating unit comprises condensation segments, a heat transport segment, an evaporation segment, a liquid injection opening and a phase change liquid; each radiating unit is provided with two or three condensation segments and is welded to a horizontal mother pipe; the horizontal mother pipe is connected with the heat transport segment through a tee joint; and the liquid injection opening is welded to one end of the horizontal mother pipe. The direct wallboard radiation heating system has the effects that conventional energy consumption can be partially or completely replaced in heating energy consumption of buildings, and 20-40% of energy conservation can be achieved through partial placement. By using automatic one-way heat transfer characteristics of the gravity heat pipes, a moving component is avoided and manual operation is not needed during operation, so that the system almost has no operation cost. The system provided by the invention is suitable for a standby heating system of an industrial building, and has the advantages of being energy-saving, and free of operation cost.

The invention discloses a wind-solar complementary seawater desalination system, which comprises a power supply, an indirect contact seawater desalination system, a direct contact membrane distillation seawater desalination system and a cooling system. The indirect contact seawater desalination system and the direct contact membrane distillation seawater desalination system are connected through a pipeline. The cooling system provides the indirect contact seawater desalination system and the direct contact membrane distillation seawater desalination system with cold energy. By coupling three kinds of energy, unification of high energy efficiency ratio, high fresh water recovery rate and low operation cost of the seawater desalination system is realized, and organic combination of cold waste energy (LNG cold energy) and renewable energy (solar energy and wind energy) is achieved. LNG cold energy is fully utilized. No energy is consumed. There is no operation cost.

Disclosed is a system for treating boiler flue gas. The system for treating boiler flue gas is characterized in that the system comprises a desulfurization system and a denitration system; the flue gas input end of the desulfurization system is connected with the output end of a flue gas discharge device, and the flue gas output end of the desulfurization system is connected with the flue gas input end of the denitration system; the denitration system comprises an ozone escaping treatment system, a photocatalytic system and a denitrification tank; after the flue gas passes through the desulfurization system, before entering the denitrification tank, the flue gas is mixed with substances produced by the photocatalytic system, and the flue gas and the substances enter the denitrification tank together; the ozone escaping treatment system is arranged at the flue gas output end of the denitration system; purified gas is discharged from a purified flue gas outlet after the ozone escaping treatment system. The system for treating the boiler flue gas has the advantages that by the adoption of the system, the boiler flue gas can be effectively treated, sulphur dioxide can be changed into sulfuric acid, nitrogen oxides are changed into nitric acid for recycling, and therefore the recycling benefits of the system far exceed the operation cost of equipment, and users can gain more profits.

The invention discloses underground coal mine hydraulic oriented roof cutting equipment and a construction method thereof. The equipment mainly comprises an anti-explosion pump station, liquid feedinglong tubes, liquid returning long tubes and lateral thrusters, wherein each lateral thruster consists of a plurality of lateral thrusting bars which are connected in series through connecting tubes and connecting rods; and a plurality of hydraulic jacks are arranged on one side of each lateral thrusting bar. The construction method using the equipment comprises the steps of during construction, drilling holes through an advance face, mounting the lateral thrusters in the drilled holes through a lagging face, providing hydraulic force for the lateral thrusters by the anti-explosion pump station, carrying out lateral thrusting by the hydraulic jacks while liquid is fed by the liquid feeding long tubes so as to generate huge thrust to split off top rock of a free face to cut a roof and reduce pressure of surrounding rock of a goaf side; and stopping liquid supplying of the liquid feeding long tubes and releasing pressure, supplying liquid by the liquid returning long tubes, and withdrawing the hydraulic jacks. The underground coal mine hydraulic oriented roof cutting equipment can be used for the fields of coal mine roof cutting and pressure releasing, non-pillar mining, prevention and control of rock burst and the like.

A method by which water may be extracted from the air even without a supply of electricity from a power source or even without a supply of fuel, as well as an apparatus therefor, is disclosed. The apparatus used for the method for extracting water from the air comprises at least a rotatably mounted hygroscopic moisture-absorbing rotor having at least one region through which air can pass in the direction of thickness thereof; a passage for regeneration through which air for regeneration is circulated, of which both ends are opened at the opposing two surfaces of a regeneration region, respectively, the regeneration region being a part of the moisture-absorbing rotor, at which the moisture-absorbing rotor that absorbed moisture is regenerated; and a drain hole for taking out condensed water from the passage for regeneration.

The invention provides an underground gravity heat pipe direct heating device. A decorative protection cover of the heating device is connected to aluminum wing type cooling fins through screws. The aluminum wing type cooling fins are connected to peripheries of cooling branch pipes in a sleeving manner. Each cooling branch pipe is connected to and communicates with a horizontal mother pipe. The horizontal mother pipe is connected to the heat insulation section of an underground gravity heat pipe through a tee joint. A liquid injection opening is connected to one end of the tee joint. The underground gravity heat pipe direct heating device has the beneficial effect that geothermal energy is sufficiently used through the underground gravity heat pipe direct heating device. In the construction heating energy consumption, the conventional energy consumption can be partially or completely replaced, and energy conservation of 20%-30% can be achieved through partial replacement; and conventional energy can even be completely replaced in some places with low requirements for the room temperature. The automatic one-way heat transfer characteristic of the gravity heat pipe is used, no movement parts are used, and manual operation is not needed during operation. The device is particularly suitable for on-duty heating systems of industrial buildings, and has the beneficial effects that energy conservation is achieved and no operating cost is generated.

The invention relates to a simple method for measuring artemisinin content, and in particular relates to a method for measuring artemisinin content in traditional Chinese medicinal materials such as Artemisia annua and samples containing artemisinin components. The method comprises the following steps of: dissolving a measured sample in an organic solvent and preparing artemisinin which is extracted through the organic solvent into a sample solution to be measured; adding NaHCO3 glacial acetic acid, ethanol, distilled water, KI with the artemisinin components in the sample to be measured, and concentrated hydrochloric acid into a 50mL conical flask, adding a sample solution to be measured with a determined volume, heating and reacting the mixed solution in a water bath at the temperature of 5-100 DEG C for 0 to 24 hours, and cooling the mixed solution; and finally, taking starch as an indicator, titrating to be at a terminal point by using a Na2S2O3 standard solution, and calculating the artemisinin content in the sample through a formula. The method is unique, rapid in measurement and low in cost.

The invention discloses a small-scale portable manual and ocean current integrated drive generator, which comprises a motor, a speed increasing box, propeller blades, a main shaft and a handle. Ocean current energy pushes the oar blades to rotate to be input into the motor through the main shaft for power generation, and during the revolution of the propeller blades, a cam-linkage mechanism controls the angle of the propeller blades at the same time to improve the utilization rate of an ocean current. When the flow rate of the ocean current is low or a machine set starts, manual and axially power generation can be adopted; when the propeller blades break down or no flow rate is available, the propeller blades can be detached and manual power generation can be adopted to meet an emergency; and when the flow rate is normal, the handle can be detached to generate power with the ocean current alone. The device can supply power to common civil fishing boat to meet the needs for lighting, ice making and the like. The device is low in price, convenient in detachment and simple in maintenance, and can replace a conventional diesel generator, reduce consumption of non-renewable energy resources such as oil, respond to national appeal of energy conservation and emission reduction and create benefits and increase income for fishermen.