898results about How to "High economic value" patented technology

The invention, referred to herein as PeaCoCk, uses a unique blend of technologies from statistics, information theory, and graph theory to quantify and discover patterns in relationships between entities, such as products and customers, as evidenced by purchase behavior. In contrast to traditional purchase-frequency based market basket analysis techniques, such as association rules which mostly generate obvious and spurious associations, PeaCoCk employs information-theoretic notions of consistency and similarity, which allows robust statistical analysis of the true, statistically significant, and logical associations between products. Therefore, PeaCoCk lends itself to reliable, robust predictive analytics based on purchase-behavior.

A photo-electric conversion array is formed by connecting photo-electric conversion cells in series. Each photo-electric conversion cell includes: a substrate, at least one main surface of which is made of a conductor layer; plural crystalline semiconductor particles provided on the conductor surface of the substrate; an insulation layer filled in clearances among the crystalline semiconductor particles; a transparent electric conducting layer provided above the plural crystalline semiconductor particles; a collector electrode, formed on the transparent electric conducting layer, to collect electricity from the transparent electric conducting layer. The substrate is provided with a substrate electrode portion at one end portion, through which the conductor surface of the substrate is exposed, and a connection electrode is formed by extending the collector electrode, so that the connection electrode in a given photo-electric conversion cell is connected to the substrate electrode portion in another photo-electric conversion cell. It is thus possible to provide a photo-electric conversion array capable of maintaining the reliability as to the adhesion strength, with a good outward appearance as well as excellent reliability and power generation efficiency.

The invention discloses an ARM (advanced RISC (reduced instruction set computer) machines) and FPGA (field-programmable gate array) based navigation and autonomous flight control system for an unmanned helicopter. The system comprises a PC (personal computer), an integrated navigation subsystem, a power supply module and controllers, wherein the integrated navigation subsystem comprises a sensor group; the sensor group comprises a GPS (global positioning system), a gyroscope, an accelerometer, a magnetoresistive sensor, a barometric altimeter and a sonar altimeter; the controllers include a main controller and a steering engine controller; the main controller adopts an ARM microprocessor to operate the integrated navigation algorithm and flight control PID (proportion integration differentiation) algorithm and simultaneously completes data acquisition of the GPS, the barometric altimeter and the sonar altimeter; and the steering engine controller adopts an FPGA to realize data acquisition of the gyroscope, the accelerometer and the magnetoresistive sensor and transfers the data to the main controller via a concurrent bus to carry out attitude calculation and control operation on the unmanned helicopter. With the unmanned helicopter as a carrier, the hardware environment of a whole set of flight control system integrating study of the aircraft navigation and control theory problem, data acquisition, information transfer and embedded control is set up.

A system and method of creating a financial instrument from at least one of a good, service and combination thereof based on quasi-fungibility thereof comprising specifying at least one of a reference good, service and combination thereof; specifying at least one of a reference use, specification and combination thereof of said at least one of a reference good, service and combination thereof; identifying at least one of an alternative good, service and combination thereof analogous to said at least one of a reference good, service and combination thereof and having at least one of a use, specification and combination thereof quasi-fungible to said at least one of a use, specification and combination thereof of said at least one of a reference good, service and combination thereof; assessing the degree of quasi-fungibility of said at least one of an alternative good, service and combination thereof by comparison of said at least one of an alternative good, service and combination thereof to said at least one of a reference good, service and combination thereof and by comparison of said at least one of a use, specification and combination thereof of said at least one of an alternative good, service and combination thereof to said at least one of a use, specification and combination thereof of said at least one of a reference good, service and combination thereof; determining if said degree of quasi-fungibility at least meets a predetermined level of quasi-fungibility; and creating a financial instrument based on said at least one of an alternative good, service and combination thereof if said degree of quasi-fungibility at least meets said predetermined level of quasi-fungibility.

A method of aquaculture is applicable to a novel culture arrangement for diversified farming of generally deep sea fin fishes, shrimps, and shellfishes. A pre-manufactured enclosed cultivation tank is provided and air compressor facility is included for pressurization and oxygenation so as to make the interior of the cultivation tank a pressurized water environment of predetermined high pressure. A low pressure siphon tube is included for sucking and removing excrements from the cultivation tank and to realize water replacement in a natural manner thereby providing a deep sea mimicked clean cultivation environment. The drained water is subjected to multiple steps of filtration and purification for separating the excrements from the water and for purifying water to allow cyclic use of the water. An arrangement of multiple cultivation tanks allows for diversified and multi-species cultivation of fishery products and deep sea fishes.

The invention provides a production system of a selenium-enriched product based on recycling ecological agriculture. Selenium is added into crop straws and livestock manure to ferment, or selenium is added after fermenting to obtain selenium-enriched ground substance; the ground substance is used for planting edible fungi to ensure that the selenium content in the edible fungi can be increased obviously; edible fungi residual is used for cultivating earthworms; selenium-enriched earthworms are obtained to serve as feed or feed additives for feeding pigs, chicken, ricefield eels, turtles and the like so as to obtain selenium-enriched meat, eggs and fish products. Wormcast and livestock manure are used for planting vegetables such as leeks, cucumber and the like or field crops, such as corn, wheat and the like to further utilize selenium to obtain selenium-enriched vegetal products; plant residues obtained in planting vegetables or field crops can be added with parts of selenium to serve as the ground substance for planting edible fungi or directly feeding earthworms; thus, the invention fully utilizes resources in a recycling manner, and has obvious economic benefit, ecological benefit and social benefit.

The invention provides a process for continuously extracting sweet potato starch, sweet potato protein and dietary fibre from sweet potato specially for processing the sweet potato and belongs to the filed of food biotechnology. The sweet potato is cleaned, is added with a color protective solution, and is pulverized, ground and squeezed in order to separate sweet potato residue and cell sap; a cleaning solution of the sweet potato residue and the cell sap are mixed and are filtered through a standard sieve with 200 meshes; a filtrate is subjected to centrifugal dehydration twice and is dried to obtain starch; after starch milk is separated out, the filtrate is degraded with starch; the filtrate with molecular weight of between 5,000 and 10,000 is intercepted, ultrafiltered, condensed and dried to obtain coarse protein of the sweet potato; and the sweet potato residue is added into a biological reactor, is added with water, protease and amylase for reaction, and is subjected to filter pressing, drying and pulverization to obtain insoluble the dietary fiber of the sweet potato. The method can fully utilize organic compositions in the sweet potato, minimize the generation and emission of organic wastewater and waste residue with high concentration, realize the full-value utilization of the sweet potato, and remarkably improve the economic value of the sweet potato.

The present invention relates to a solid oxide fuel cell having a gradient structure in which pore size becomes gradually smaller from a porous electrode to an electrolyte thin film in order to form a dense electrolyte thin film of less than about 2 microns and preferably less than 1 micron on the porous electrode.

The invention discloses a meat online non-destructive testing method and apparatus based on fusion of image and spectrum information, including a conveyor belt, a spectrum collection room, an image collection room, a camera mounted beam, an imaging source, a camera, a Y type optical fiber, a spectrograph, a data processing PC, two photosensors, a motor and a conveyor belt bracket. Through online collection of meat image and spectrum information, collecting feature information of characteristic meat quality, establishing a fused quantification prediction model based on image characteristics, spectrum characteristics and characteristics layer data of image and spectrum, using the obtained quantification prediction model to combine with quality evaluation system to establish a decision layer data fusion model based on image and spectrum for testing meat online. The invention uses complementarity and redundancy of the image information and the spectrum information to implement classification of materials and quality test during meat producing process according to optical feature of meat, which improving production efficiency.

The invention relates to an agricultural microbial compound bacterial fertilizer, in particular to a method for producing a microbial compound bacterial fertilizer. The method is characterized in that activated sludge fermented by a fermentation plant during sewage treatment is used as matrix, molasses is added into the matrix as a culture medium, compound bacteria are grafted into the culture medium after adding water to ferment, then grass carbon is added into the culture medium, and the mixture is dried to form the compound bacterial fertilizer. The method realizes reutilization of sludge waste, and provides economic and efficient microbial sludge bacterial fertilizer for the development of green ecological agriculture.

The invention relates to a sulfur-containing tail gas purifying and recycling method. The method comprises the following steps: firstly adopting a direct current sulfur recovery method to recover the sulfur-containing tail gas and controlling the air dosage during recovery; then feeding the tail gas to a purifying column with barium sulfide solution, reacting to obtain a barium sulfite precipitate and a barium carbonate precipitate and exhausting the hydrogen sulfide refined gas, feeding the hydrogen sulfide refined gas to three stages of alkali liquor (sodium hydroxide solution) absorption columns in sequence and discharging the gas up to the standard after absorption; finally concentrating the solution to obtain the solution containing 70% of sodium hydrosulfide and flaking, thus obtaining the sodium hydrosulfide product. By adopting the method, the sodium hydrosulfide product which has higher quality and is widely applied to the industries such as mining, tanning and the like can be produced and up-to-standard exhaust of the tail gas can be realized.

The invention discloses a distributed multi-intelligent-agent real time fault detection method based on neighbor associated condition. By converting node models having faults, a new fault detection model is built, fault signals and system condition variables are decoupled, fault detection difficulty is lowered, and only associated condition information of neighbors can be obtained via nodes. According to the distributed multi-intelligent-agent real time fault detection method, by setting fault detection sub-networks and subjecting sub-network models to corresponding linear conversion, node associated condition information can be converted into condition variables in the above fault detection model, and fault detection tasks can be done via the model. The invention provides a new fault detection solution to observe whether faults occur. The invention provides a neighbor associated condition solution for fault detection results. According to the distributed multi-intelligent-agent real time fault detection method, groupment advantages of a multi-intelligent-agent system are fully used, reliability of detection results is increased without system hardware performance improvement, and the distributed multi-intelligent-agent real time fault detection method is high in application value.

The invention discloses a method for preparing a fatty acid ethyl ester with Omega-3 content of more than 90 percent by taking fish oil as a raw material. According to the method, the fish oil serves as a raw material, and the method sequentially comprises the following steps of: removing free fatty acids through molecular distillation prepurification; performing twice transesterification reactions on fish oil and ethanol to prepare fatty acid ethyl ester by taking sodium ethoxide as a catalyst; performing primary purification on the fatty acid ethyl ester through molecular distillation; performing secondary purification on the fatty acid ethyl ester through a urea inclusion technology; purifying and discoloring the fatty acid ethyl ester subjected to urea inclusion through molecular distillation; performing activated clay adsorption and reducing the peroxide value; and removing anisidine from a sodium hydroxide ethanol solution, so that the fatty acid ethyl ester with Omega-3 content of more than 90 percent is obtained. The method has the beneficial effects that a production method which is not used in China at present is provided; and according to the method, the fatty acid ethyl ester product with Omega-3 content of more than 90 percent is produced. The fatty acid ethyl ester obtained by the method has the Omega-3 ethyl ester content of more than 90 percent, and each quality standard accords with the standards of European pharmacopoeia and United States pharmacopeia; and moreover, the fatty acid ethyl ester can be used for nutritious supplementary, medicines, foods and food additives and is high in economic value.

The invention provides a preparation method of heteroatom doped graphene-based material supported noble metal nanoparticles. The preparation method comprises steps as follows: preparation of a heteroatom doped graphene-based material: a graphene-based material is subjected to ultrasonic treatment, a heteroatom precursor is added, heteroatom doping is performed in a hydrothermal kettle at the temperature of 150-200 DEG C, and the heteroatom doped graphene-based material is obtained; preparation of the heteroatom doped graphene-based material supported noble metal nanoparticles: the heteroatom doped graphene-based material is dissolved in deionized water and subjected to ultrasonic treatment, a stabilizer and a metal precursor are added, metal in the metal precursor is platinum, palladium, gold or silver, the mixture is continuously stirred, pH is adjusted to range from 8 to 14, a reduction agent is added, the mixture is continuously stirred, and the heteroatom doped graphene-based material supported noble metal nanoparticles are obtained after vacuum drying. The synergistic effect of the heteroatom and the carrier on noble metal is used, the activity and the stability of a catalyst are effectively improved, and a preparation process is simple and suitable for industrial production and has higher economic value.

A recycling treatment method for feces and wastewater in a large-scale livestock and poultry breeding farm includes the following steps: (1) pre-treating the feces and wastewater in the large-scale livestock and poultry breeding farm in a pretreatment unit to form slurry; (2) feeding the slurry into an energy recovery unit, and performing solid anaerobic digestion in a solid anaerobic reactor to obtain an energy gas, methane; (3) performing solid-liquid separation to the digested slurry to generate wastewater, which is then fed into a UASB reactor to perform further anaerobic fermentation to remove organic pollutants from the wastewater; (4) feeding the treated wastewater into a nitrogen and phosphorus removal unit to perform nitrogen and phosphorus removal treatment; (5) separating and purifying a precipitate, which is generated in the nitrogen and phosphorus removal unit and mainly includes magnesium ammonium phosphate, to obtain an organic fertilizer additive, wherein the nitrogen removal process is autotrophic nitrogen removal and can reduce aeration quantity by 62.5% without addition of any carbon sources, thus saving large quantity of operation cost; and (6) feeding the treated wastewater into a deep-treatment unit to remove bio-refractory substances and disinfect the wastewater so as to finally reach emission and recovery standards of wastewater.

A method for quickly brewing the low-salt squid soy sauce features that the by-product generated by processing squid is used as one of its raw materials, the endogenous proteinase is used for its hydrolyzing at 35-55 deg.C for 48-72 hr, and their soy leaven is used for its fermenting at 40-55 deg.C for 21-28 days and then at 30-38 deg.C for 7-12 days.

The invention provides a drop hammer type dynamic impact testing machine and a testing method thereof. The testing machine comprises supporting stand columns; a table seat and a fixed platform are respectively arranged at the two ends of the supporting stand columns; a ladder is arranged at one sides of the supporting stand columns; the fixed platform is fixedly provided with a speed reducing motor and a first press plate; a sleeve, a casing and an anchor rod are sequentially arranged at the lower end of the first press plate; the sleeve is connected with a second press plate in a sliding way,and a first pressure sensor is installed on the upper end face of the second press plate; a second pressure sensor is installed on the upper end face of a tray arranged at the lower end of the anchorrod, and a displacement sensor is installed on the lower end face of the tray; a drop hammer also sleeves the casing; an output shaft of the motor is connected with the drop hammer by means of a steel wire rope. The drop hammer type dynamic impact testing machine is novel in structure, high in economic value, economical and convenient to operate, can be used for testing the performance of an energy-releasing anchor rod and a common anchor rod body resisting and absorbing the impact energy under the action of impact load, and can also be used for testing the performance of the energy-releasinganchor rod and the common anchor rod resisting and absorbing the impact energy under the action of the impact load during simulation of on-site anchoring.

The invention discloses a method for preparing an iron oxide red hybridization pigment by means of clay minerals. According to the method, natural clay minerals are dispersed in water to form suspension liquid after being subjected to breaking, double rolling and ball milling, molysite and auxiliaries are then added, evenly dispersed and transferred into a hydrothermal reaction kettle, pH of the solution is controlled to be 0.5-4, reaction lasts for 5-60 h at the pressure of 2-8 MPa and the temperature of 160-300 DEG C, and programmed cooling is conducted at the rate of 10 DEG C/min to indoor temperature; the solid product is separated, washed, dried and smashed to generate the bright red hybridization pigment. Structural evolution and recombination are induced through hydrothermal reaction, reaction parameters are precisely controlled, exchange is conducted between Fe3+ and ions in clay minerals under the action of auxiliaries, in-situ formation of a crystalline phase is achieved, the novel silicon-aluminum iron oxide red hybridization pigment with bright color, high stability and uniform size is obtained, and the cost-effective red hybridization pigment is provided for multiple fields including coating, paint, ceramic and ink.

The invention relates to a method for extracting multiple active nutrient contents from sea cucumber processing liquid. The method comprises the following steps: raw material collection, primary filtration, enzymolysis, rough filtration, ultrafiltration, concentration, secondary rough filtration, desalination, fermentation, centrifugation, secondary enzymolysis, secondary centrifugation, third rough filtration, secondary ultrafiltration, secondary concentration and spray drying. The invention further relates to application of the method in orally disintegrating tablets. Compared with the prior art, the method has the advantages that a prepared sea cucumber extract contains multiple nutrient contents, and the total content of sea cucumber polypeptide, small proteins, sea cucumber mucopolysaccharide and sea cucumber glycosides reaches 80%-90%; in the whole technological process, reaction conditions are mild, no organic solvent is used, nutrient contents are hardly damaged, and molecules of the extracted sea cucumber extract are relatively small; after the sea cucumber extract is fermented by using beneficial bacteria, the nutrient contents in the sea cucumber extract are easily absorbed by human bodies, and almost no peculiar smell exists; furthermore, the technological process is very suitable for the industrial expanded production.

The invention provides a process of separating iron and titanium in seaside titanomagnetite via direct reduction roasting by using coal. According to the process, seaside titanomagnetite is employed as a raw material, a reducing agent, a binder, and an additive are added for briquetting, and then a selective direct reduction roasting - magnetic separation method is employed for respectively recovering iron and titanium. The process of the invention is simpler compared with other methods, wherein cost-effective coal is directly used as the reducing agent, additives added in the process is a mixture of sodium carbonate and sodium borate, and by adding the reducing agent and the additive, and controlling roasting temperature and time, selective reduction of iron and separation of iron and titanium can be achieved, ensuring the grade and recovery rate of direct reduced iron while reducing the titanium content in the direct reduced iron. The finally obtained direct reduction iron powder has a grade above 93%, the recovery rate of iron is generally greater than 85%, the titanium dioxide content is less than 0.5%, while the titanium dioxide content in obtained high titanium magnetic separation tailings is higher than 20%, and the recovery rate of titanium is greater than 90%.

The invention relates to a fruit preserve and a production process thereof, especially a preserved passion fruit and a production process thereof. The fresh passion fruit is used as the raw material and then subjected to cleaning, peeling, removing juice from the passion fruit, boiling, cooling, sugaring, drying and packaging. The nutritional ingredients of the passion fruit are completely preserved, and the puzzle that the shell of the passion fruit can not be directly eaten is solved, so that the nutrients of the passion fruit are completely utilized, and the economic value and the economic benefic of the passion fruit are increased. The production process is special and simple, so as to provide an ideal selection to consumers, and develop a new approach to deep-process of the passion fruit.

The invention discloses a liquid bacterial agent for rooting, which comprises the following raw materials by weight parts: 20-80 parts of concentrated amino acid fermented liquid, 15-30 parts of urea, 5-20 parts of potassium fulvic acid, 10-20 parts of alginic acid, 5-15 parts of chitosan, 10-30 parts of bacillus subtilis, 5-20 parts of Alpha-pimacol, 10-35 parts of sodium nitrophenolate, 1-4 parts of indole butyric acid potassium, 5-15 parts of 5-nitrate and 10-20 parts of calcium nitrate. According to the invention, the liquid bacterial agent contains various high-activity strains including bacillus laterospor, bacillus licheniformis, bacillus subtilis and the like and dozens of high-purity nutritional ingredients. The liquid bacterial agent has super strong activity, and can quickly reach nutrient deficiency parts and bacteria infection parts of crops after being used so as to quickly complement the deficient elements, and can split mycelium and spore and remove soil-borne diseases so as to allow the crops to be quickly back to health. The liquid bacterial agent has the advantages of good water solubility, strong absorption ability, non-public hazard, no residue and no volatility after being used, and can not cause poison damage for the crops in the greenhouse.

The invention provides a method for preparing tert-butyl peroxide by using a heterogeneous catalyst. The method comprises the following steps: by using tert-butyl alcohol and oxydol as raw materials and an acidic ion exchange resin as a catalyst, reacting under reflux, cooling, standing, and separating to obtain an oil phase and a water phase; and washing the oil phase with alkali and water to obtain a di-tert-butyl peroxide solution (DTBP), wherein the oil phase water washing solution and water phase are the tert-butyl hydroperoxide water solution (TBHP). Since the ion exchange resin has the advantages of large pore structure, high acidity and high catalysis efficiency and the large pore structure can not be destroyed in reaction, the catalyst can be easily separated from the reaction product and can be recycled repeatedly, thereby having higher economic value. Besides, no sulfuric acid or any other strong acid is used in the production process, so the method has the advantages of low corrosion to equipment and no environment pollution, and has higher environmental benefit.

The invention provides freshwater chlorella sorokiniana XJ02 and application thereof in fixation of CO2 and production of microalgae oil. The preservation number of the chlorella is CCTCC (China Center For Type Culture Collection) NO: M2013104. The chlorella disclosed by the invention can be used for fixing 0.03-20% of CO2 at high efficiency, the CO2 fixation efficiency of chlorella is 130-343mg/L/d, the biomass (dry weight) concentration of the chlorella is 720-2250mg/L, the oil content of chlorella is 29.2-41%, the oil fatty acid of the chlorella is mainly composed of C16 and C18 short-chain fatty acids, and the chlorella is suitable for production of biodiesel. Compared with the reported microalgae, the chlorella has higher CO2 fixation efficiency and biomass yield; and the chlorella can be used for obtaining the microalgae oil at high yield by selecting an appropriate culture condition, thus the production cost of the microalgae oil can be greatly reduced. An excellent production algae is provided for high-efficient fixation of CO2 in the environment and preparation of biodiesel by the microalgae oil.

A process for preparing organic bentone by dry method includes mixing the natural Ca-base bentone with sodium carbonate, exchange reaction to become Na-base bentone, mixing with activator, reaction, mixing with organic coating agent, heating, reaction, extruding out, baking and grinding. Its advantage is high productivity.

The invention provides a salix purpurea cuttage breeding method which comprises the following steps of (1) seedling branch selection, namely selecting ephemeral salix purpurea branches which are good in development and free from disease and insect pests and have the thickness of 1cm as seedling branches, harvesting and binding the seedling branches, digging a storage trench in a vacant lot which is leeward, faces sun and is good in water drainage, storing the bound the seedling branches into the storage trench and covering with wet sand; (2) cuttage land selection, namely selecting sandy soil which is loosen in structure, has a granular structure and is permeable and breathable as a cuttage land and applying 110kg of compound fertilizers to each mu of the cuttage land; (3) cottage, namely performing cuttage on March, digging out the seedling branches before cuttage, cutting the seedling branches into cutting slips with the length of 20-30cm and flat cut wounds, binding the cutting slips, soaking the cutting slips in clear water for 3 days, then vertically inserting the cutting slips into the cuttage land, and watering once after cuttage; (4) fertilizing and watering; (6) insect control; (7) willow twig collection. The salix purpurea cuttage breeding method has the advantages that the cuttage survival rate is relatively high, and the yield and the quality are relatively good.

The invention discloses a physical sign non-contact intelligent monitoring system based on a millimeter-wave radar. A millimeter-wave radar front-end module transmits and receives a millimeter-wave radar signal, and the millimeter-wave radar front-end module is connected with a signal processing module; a signal processing module is connected with a communication interface module, analyzes the echo signals after sampling quantification to obtain vital sign data, including frequency parameters of respiration and heartbeat, of a tested person, and transmits a processed information result to an upper computer through the communication interface module; and the upper computer compares the received vital sign data with preset data, uploads the data and a comparison result to a background server, gives an alarm to the mobile terminal if the comparison result is abnormal, and automatically gives an alarm when the comparison result exceeds a preset maximum value. According to the invention, the real-time intelligent monitoring of vital signs of indoor old people is realized, including monitoring of breathing and heartbeat parameters, and real-time alarm is carried out in case of abnormality so as to prevent accidents.

The invention relates to a surface treatment technology for alloys, in particular to a method for preparing a colored electrophoretic coating film on the surface of a magnesium-containing high-silicon deformed aluminum alloy. The technical solution of the invention includes pretreatment, DC anodic oxidation and anodic electrophoretic coating. The main point is to adjust the color by different dyes or dye ratios and control the process parameters of anodic oxidation and electrophoretic coating. Under the voltage of 130-140V, electrophoretic coating is carried out for 3 minutes, and a layer of colored paint is prepared on the surface of magnesium-containing high-silicon deformed aluminum alloy. The electrophoretic coating film improves the corrosion resistance and decoration of the surface of the magnesium-containing high-silicon deformed aluminum alloy, and all properties of the electrophoretic coating film of the invention reach or exceed national standards.

The invention relates to a method for processing wastewater in the production of nickel cobalt lithium manganate, comprising the following steps: stirring the wastewater containing metal ions of nickel, cobalt and manganese, ammonia ions and solid particles, adding alkaline solution to rise the pH value to be more than 12.5, and completely precipitating the nickel, cobalt and manganese metal ions in the wastewater; leading the wastewater to a sedimentation pond so as to sedimentate the solid particles in the wastewater; leading the wastewater to an ammonia evaporator to remove the ammonia ions in the wastewater; leading the wastewater to a sand bed to filter a small amount of sediments; leading the wastewater to a pH value regulating pond, pouring acid solution to the pond to reduce the pH value to be between 6 and 9; and leading the wastewater to a three-level RO film, and returning pure water filtered by the three-level RO film to production for recycling. The processing method of production wastewater of nickel cobalt lithium manganate is used for recycling wastewater without introducing new impurities, the reclamation rate is high, zero draining is realized, and side products have higher economic value.

The invention provides a method for realizing deep depletion on copper slag through multielement gas substep injection. The method fully utilizes waste heat of molten copper slag, copper matte is converted into oxide through gasification desulphurization, then selective reduction is carried out to obtain copper iron alloy with higher copper content, the problem of copper slag depletion in a smelting process is solved, and low-sulfur low-copper depletion slag is produced, so that conditions are created for a follow-up iron extracting process, and the deep depletion on the copper slag is realized; the traditional matte-producing depletion process is abandoned, but a gasification desulphurization process is firstly carried out for converting the copper matte into the oxide, then the oxide is subjected to selective reduction by virtue of a reducing agent, so that a copper-iron alloy phase is obtained. Operation is simple, adaptability is strong, the method can be realized by modifying the original electric furnace, nickel slag similar to the copper slag in properties can be treated, and metal elements such as Cu, Ni, Co and Fe can be comprehensively recycled.