178results about How to "PH drop" patented technology

The invention discloses a method for preparing yibin bean sprouts by quick fermentation, which comprises the following steps of: cutting leaf stalks of leaf mustard into strips, drying in air till 10 to 15 percent of moisture is reduced, uniformly blending leaf mustard and edible salt in a weight ratio of 100: 5-15, sealing the leaf mustard in a container for primary prickling for 45 to 120 days; elutriating the prickled bean sprouts with 5 to 15 mass percent of edible saline water, filling the elutriated bean sprouts in a container, pouring brown sugar liquid in an amount which is 5 to 15 percent based on the weight of the prickled bean sprouts and adding spices into mixed material according to the traditional process, and finally, inoculating compound microbial strain in an amount which is 0.05 to 0.5 percent based on the weight of the prickled bean sprouts, and sealing and fermenting for 75 to 140 days under natural conditions, taking the bean sprouts out, flavoring and processing the bean sprouts for eating. The yibin bean sprouts prepared by the invention can keep the traditional aroma and taste, shorten the fermentation period greatly, reduce the production cost of the yibin bean sprouts, suppress the growth of harmful microbes and improve the edible safety of the products.

The invention provides a method for fermenting fruit and vegetable pulp by adopting plant probiotics, and is used for solving the problems that low-acid and acidic fruit and vegetable puree has shorter shelf life, the product flavor is not good, the processing cost is high and nutrition loss is serious during processing. The method is specifically completed by the steps of fruit and vegetable pretreatment, crushing, softening, fruit and vegetable pulping, mixing, primary sterilization and cooling, fermentation, centrifuging, degassing, homogenization, secondary sterilization and cooling and sterile filling. The method has the beneficial effects that the fruit and vegetable pulp with weaker acidity is fermented by different lactobacillus to generate plenty of organic acids, such as lactic acid, thus reducing the pH value of the fruit and vegetable pulp, generating better fermentation flavor at the same time, reducing the sterilization conditions and retaining the nutrients of fruit and vegetables and increasing the nutrients of the fermentation product while saving cost; meanwhile, the fermented fruit and vegetable puree is centrifuged by a horizontal spiral centrifuge to separate yeast mud, thus effectively improving the utilization stability of the fermented fruit and vegetable pulp in the beverage industry.

The invention relates to a composite microbial organic fertilizer for saline-alkali soil improvement. The composite microbial organic fertilizer for saline-alkali soil improvement comprises Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, silicate bacterium, mould fungus, fulvic acid, amino acids and bentonite. The preparation method comprises the following steps: screening, preparing a composite microbial inoculant, concentrating the fermentation liquid, drying, and carrying out high-temperature composting rotting fermentation. When the composite microbial organic fertilizer is used for improving the saline-alkali soil, the crop yield is increased by 19-40%, the soil pH is lowered by 0.2-0.8, the electric conductivity (EC) is lowered by 0.5-0.8, the available phosphorus content is increased by 2.0-4.4 mg / kg, the quick-acting potassium content is increased by 40-68 mg / kg, and the quantity and diversity of soil microbes are obviously increased.

The invention provides a silage additive special for paper mulberries and an application of the silage additive. The additive comprises zymogen and complex enzymes, wherein the zymogen consists of lactobacillus plantarum (lactobacillus plantarum) plantarum ) ACCC11016 and enterococcus faecalis (enterococcus faecalis) faecalis ) CICC20440 according to the ratio of the viable count of the lactobacillus plantarum to that of the enterococcus faecalis being (1-10) to (0-1), and the complex enzymes consist of cellulase, pectinase and glucose oxidase. According to the silage additive, through synergistic effects of lactic acid bacteria, an enzyme preparation and soluble carbohydrate, the retention period of a fresh paper mulberry coarse feed is prolonged, besides, various organic acids and various nutrient substances are produced, the palatability and the digestion and utilization rate of paper mulberry branches and leaves are increased, the content of neutral washing fibers and the content of acidic washing fibers are reduced, increase of the food consumption of livestock and poultry is facilitated, and the silage additive can be used for producing an environmental-friendly biologic feed.

The invention discloses lactobacillus hilgardii. The lactobacillus hilgardi strain is screened from waste rice milk, is preserved in China General Microbiological Culture Collection Center (CGMCC) on September 3, 2013 and has a preservation number of CGMCC No.8098. The strain can be prepared into a ready-to-use starter after being activated and cultured at a high density. The lactobacillus hilgardi disclosed by the invention and the ready-to-use starter made from the lactobacillus hilgardi can be applied to the brewing of yellow rice wine; by virtue of the lactobacillus hilgard and the ready-to-use starter of the lactobacillus hilgardi, the production process is controllable, is rarely influenced by season, and is simple and convenient to operate; and the lactobacillus hilgard and the ready-to-use starter of the lactobacillus hilgardi are significant for the innovation of the process for brewing the yellow rice wine.

The invention provides a method for producing low-salt fast fermented fish sauce. The method comprises the steps of inoculating aspergillus oryzae to bran, flour and peptone serving as fermentation materials to prepare yeast; unfreezing frozen anchovy at low temperature, mixing the anchovy, 5 to 20 percent of yeast and 10 to 20 percent of sea salt uniformly, and preserving the heat for 2 to 10 days at the temperature between 30 and 35 DEG C to liquefy the anchovy fast; and after the anchovy is liquefied, adding 1 to 5 percent of syrup and 1 to 8 percent of edible alcohol, preserving the heat for 1 to 3 months at the temperature between 20 and 30 DEG C, performing natural fermentation for 1 to 2 months, sterilizing, filtering, packing, and thus obtaining the fermented fish sauce with good flavor and low salt. Compared with the conventional fish sauce fermentation, the method has the advantages that the fermentation time is shortened from more than 1 year to 4-6 months, the salt is reduced from more than 25 percent to 15-18 percent, and the flavor and the color are nearly close.

The invention discloses a method for recovering nitrogen and phosphorus in sewage by electrochemical struvite crystallization. The method is used for solving the problems of large overpotential and high magnesium source cost of existing electrochemical struvite crystallization recovery of nitrogen and phosphorus in sewage, and acidolysis of cheap magnesium mineral in an anolyte is used to significantly reduce the overpotential and reduce the cost of the magnesium source. The method is based on the conditions of acidification of the anolyte and alkalization of a catholyte, formed by electrode reactions in a dual-chamber electrolytic tank, and the magnesium mineral is added into an anode chamber to prevent preventing acidification of the anolyte and stabilize the pH value of the anolyte; andmagnesium ions released by the acidolysis of the magnesium mineral go through a cation exchange membrane and migrate to a cathode under the driving of electric field force, the migrated magnesium ions and ammonium ions and phosphate radicals in sewage in a cathode chamber undergo a crystallization reaction under alkaline conditions to form a struvite precipitate and stabilize the pH value of thecatholyte, so the purpose of simultaneously removing and recovering nitrogen and phosphorus in the sewage is achieved. The method makes the electrochemical struvite crystallization recovery of nitrogen and phosphorus in the sewage have great application and promotion values.

The invention discloses a closed-loop control system for treating landfill leachate in cooperation with partial nitrosation and denitrification and a denitrifying and decarburizing method for treating the landfill leachate. A programmable logic controller in the system is connected with a water inlet pump, a water outlet valve, a mud valve, a stirrer, a fan, a water inlet / outlet and an alarm floating ball switch, a sensor automatically controls the process of a reactor such as water charging, stirring, aerating, depositing, mud discharging, and water discharging, and the system is provided with a constant temperature system to control the reaction temperature. The denitrifying and decarburizing method comprises the following steps of: firstly stirring in an anaerobic way to denitrify partial nitrite nitrogen and nitrate in the reactor after the water charging, and aerating to degrade the residual organic matter and carry out partial nitrosation, so that the most degradable organic matters can be removed, and about 53% of ammonia nitrogen can be converted into nitrite nitrogen, therefore, a condition can be created for the anaerobic ammonia oxidation treatment. The system can carry out the stable denitrification treatment and the partial nitrosation treatment on the landfill leachate, can further effectively remove the organic mattes, and is high in mud settleability, high in activity, full-automatic in control, convenient and reliable.

The invention discloses a method for innocently treating drilling mud by using mixed microbial agents. The method comprises the following steps of adding properly stirred microbial agents in mud discharged in a petroleum and gas drilling process; performing treatment layer by layer; inoculating anaerobic bacteria at a position below a 1m position in a pond for storing the mud; and inoculating aerobic bacteria in the mud above the 1m position and on the surface layer of the pond. By layered treatment, the degradation speed of harmful substances is increased greatly, and the degradation effect of pollutants is improved. After the mud is stored for 3-12 months in the place, various indexes of the mud reach a dry land level-3 standard of farmland soil environment quality standards of China. Woods or crops can be planted in a treated wasted mud pile, a broken ecological system can be recovered, and the purposes of energy conservation, emission reduction, safety and high efficiency are achieved. The method is convenient to operate, physical volume of the mud is not increased in a treatment process, the cost of the method is lower than that of another method by 20%-30%, the mud can be treated in batches, and the method is suitable to be popularized and used in domestic and foreign oil and gas fields widely.

The invention relates to a method for improving a slight saline-alkali land. A special soil conditioner for the saline-alkali land is provided, a singular carbonization treatment mode in the prior artis changed, and simple two-phase carbonization treatment is performed on straw, so that the own alkalinity of biochar is reduced, the advantages of increase of porosity and specific surface area of the biochar are highlighted, microbial reproduction and growth are facilitated, reduction of the soil bulk density and increase of the exchange capacity of calcium and sodium ions in soil are achieved,and the problem of hardening of the saline-alkali land is solved effectively. Through participation of bone meal, calcium enrichment can be achieved in microorganisms, and the function of soil remediation is enhanced further by combining water retention and sustained release of sodium polyacrylate; straw carbon particles are not involved in fermentation, and are directly mixed with other raw materials so as to achieve an synergistic technical effect. The pH value of the saline-alkaline soil treated with the soil conditioner can be reduced by 1.5, and the content of soil organic matter can bereduced by 18%.

The invention discloses a preparation method of polyaniline-graphene hollow microspheres. Firstly, isoamyl nitrite and sulfanilic acid are utilized to sulfonate graphene, the obtained sulfonated graphene is used as a Pickering emulsifier, water dispersion liquid of the obtained sulfonated graphene serves as a water phase, and toluene or an aniline monomer serves as an oil phase to perform emulsification, an oil-in-water (O / W) emulsion is obtained, then an oxidizing agent ammonium persulfate is added to trigger aniline polymerization, and the polyaniline-graphene hollow microspheres can be obtained after the oil phase toluene is removed. The polyaniline-graphene hollow microspheres are prepared by adopting a Pickering emulsion method. The preparation method is simple and efficient, and the prepared polyaniline-graphene hollow microsphere material with a three-dimensional hollow structure has larger specific surface area and a shorter ion and electron transmission path compared with a polyaniline-graphene composite material with a two-dimensional structure and has a greater potential application value on the aspects of catalysis, micro-reactors, sensing, energy storage materials and the like.

The invention discloses a glutamic acid separating and extracting technology. The technology is characterized in that glutamic acid in the isoelectric point liquid of glutamic acid is separated and extracted through adopting an ion exchange method, an acid solution not an alkali solution is directly used to elute for generation after the ion exchange resin adsorption of the glutamic acid, and an eluate obtained after the ion exchange returns to an isoelectric operation for glutamic acid extraction. Compared with traditional technologies, the technology disclosed in the invention has the advantages of saving of a large amount of an acid and an alkali, reduction of the production cost and the environmental pollution, and economic benefit improvement.

The invention provides a method for lowering pH of chemically treated waste water by injecting carbon dioxide, especially waste water from steel and iron manufacturing plants. The carbon dioxide is injected at different stages in the waste water chemical treatment process so as to lower the pH of the waste water and reduce the temporary hardness thereof, which makes the waste water be recycled or discharged conveniently.

The invention provides a processing method for improving the quality of canned edible mushrooms. The processing method comprises the following process flows of preparing for raw materials (dried edible mushrooms), re-watering, fixing colors, spin-drying, tumbling and seasoning in vacuum, packaging in vacuum, sterilizing at high temperature under high pressure and storing. According to the processing method for improving the quality of the canned edible mushrooms, the greatest obstacle of brown stain of dried products is overcome, and the canned edible mushrooms have the advantages of high production efficiency, long storage time, instant eating after opening bags, nutrition and delicious taste, can be subjected to mass industrial production and has the characteristics of the edible mushrooms and the function of health care. According to the processing method, a compound color fixative and carboxymethylcellulose with a certain concentration are adopted to treat, by combining a vacuum tumbling process, a proper process is adopted by aiming at different small pack snack canned edible mushrooms, and snack soft cans having good quality and a long shelf period can be finally obtained; and various defects caused by severe brown stain or irrigation treatment of a product sterilization process are overcome.

The invention relates to a preparation method of a continuous nickel-cobalt-manganese ternary precursor. The method comprises the following steps: preparing a metal salt solution, liquid caustic sodaand an ammonia water solution with a certain concentration; connecting a reaction kettle with two liquid caustic soda inlet pipes, a metal salt solution inlet pipe and an ammonia water solution inletpipe, wherein a liquid outlet of one liquid caustic soda inlet pipe is higher than a liquid outlet of the other liquid caustic soda inlet pipe; respectively and correspondingly inputting correspondingsolutions into the four liquid inlet pipes in parallel so as to enable the corresponding solutions to flow into the reaction kettle; conveying the reacted solution in the reaction kettle to an ageingtank for ageing, washing and drying to obtain the nickel-cobalt-manganese ternary precursor. Through the preparation method of the continuous nickel-cobalt-manganese ternary precursor, the prepared lithium-ion battery positive electrode material is high in performance; the yield of the production line of lithium battery products is improved; through a method of pouring the liquid caustic soda intwo liquid inlet pipes, the upper liquid inlet pipe shunts one part of liquid caustic soda and enables the part of liquid caustic soda to enter the reaction kettle; the local pH in the reaction area of the prior art is reduced; the crystal nucleuses can be obviously reduced; and D0 is increased.

The invention relates to a liquid composite acidity regulator used in a calf and lamb milk replacer, belonging to the fields of animal nutrition of animal science disciplines and forage sciences. The liquid composite acidity regulator provided by the invention is prepared by taking formic acid, hydrochloric acid and citric acid as raw materials through a scientific composition. The liquid composite acidity regulator is used in calf and lamb milk replacer emulsion so that the pH value of the emulsion is reduced to 5.0-5.5. The liquid composite acidity regulator can be added when the milk replacer is fed to calves and lambs. The liquid composite acidity regulator is convenient to prepare and use. By using the liquid composite acidity regulator, the growth performance of young animal can be improved; the blood gas index can be improved, therefore, the growth and the development of the calves and the lambs can be improved. By means of the application of the liquid composite acidity regulator used in the calf and lamb milk replacer disclosed by the invention, the visible economic benefit and ecological benefit can be brought about in the animal husbandry, in particular dairy cow and meat sheep cultivation industries.

The invention discloses a method for removing phosphorus in concentred and dewatered sludge water by virtue of deeply-dewatered sludge water. The method comprises the following steps of: pre-precipitating the deeply-dewatered sludge water and the concentred and dewatered sludge water respectively, and removing suspended matters in the two types of sludge water; then measuring the pH values of the two types of sludge water and the concentrations of phosphorus respectively; adding the deeply-dewatered sludge water in the concentred and dewatered sludge water in a certain ratio; stirring and standing; then taking the supernatant and measuring the pH value of the effluent and the concentration of phosphorus. According to the method disclosed by the invention, the mutual reactions of sludge water generated in different sludge treatment phases of a sewage treatment plant can be utilized, precipitates are formed by the metal ions of the deeply-dewatered sludge water and the phosphorus of the concentred and dewatered sludge water, solid-liquid separation is performed on the precipitate particulate matters and the supernatant by standing, the effluent is discharged, and the formed phosphorus-containing precipitates are recycled; meanwhile, the pollutant loads of metal ions and phosphorus in the sludge water can be reduced, and the pollutant burden of the backflow of the sludge water to a front-end sewage treatment system or the entrance of the sludge water in a sludge water bio-treatment process is reduced; therefore, the method has the practical significance of treating waste with waste.

Belonging to the technical field of small batch industrial wastewater treatment, the invention relates to a method for purification of alkaline heavy metal wastewater by chlorella. The method includes: collecting wastewater with an Fe<2+> content of 10-80mg / L and pH of 10-13, conducting mixing, then adding a seed solution chlorella into the mixture, controlling the culture temperature and lighting conditions, performing culture through alternation of continuous lighting and continuous darkness till the logarithmic phase of chlorella growth, recycling the chlorella, and discharging the wastewater directly. The purification method provided by the invention can be applied to treatment of alkaline heavy metal wastewater with small single emission, high emission frequency and collection difficulty, and has the advantages of flexible treatment mode and convenient operation, etc.

The invention discloses lactobacillus hilgardii. The lactobacillus hilgardii is a bacterial strain and is preserved in the China General Microbiological Culture Collection Center with the CGMCC No. 8099, and the preservation address is No. 3, Courtyard 1, Beichen West Road, Chaoyang district of Beijing at which the institute of microbiology of Chinese Academy of Sciences is located. After the bacterial strain is fermented for 24 hours, the pH of fermentation liquid can be reduced to 4.7, and the fermentation liquid is collected; the HPLC (High Performance Liquid Chromatography) detection finds that the content of lactic acid in the fermentation liquid reaches 14g / L, which shows that the bacterial strain can be used for making yellow wine and is beneficial to the inhibition of growth of bacteria and is conductive to the improvement of flavor of the yellow wine.

The invention discloses a plant lactobacillus and an application thereof in the ensilage of warm-season forage, and belongs to the field of processing and storage of forage. The provided strain (LP1) is named as Lactobacillus plantarum. The preservation number of the strain in the China General Microbiological Culture Collection Center (CGMCC) is CGMCC No. 10473. The plant lactobacillus is separated from natural herbage silage and is a novel strain of plant lactobacillus. The biological additive prepared from the plant lactobacillus and cellulase can prominently improve the fermentation quality of ensilage of warm-season forage, has the advantages of high efficiency and no pollution to the environment, does not have any adverse influence on livestock, can be easily mastered during the addition process, and can be widely used in the field of warm-season forage silage preparation.

The invention relates to a preparation method of a continuous Ni-Co-Al ternary precursor. The preparation method comprises the steps of preparing a metal salt solution of a certain concentration, an aluminum alkali, liquid sodium hydroxide and an ammonia solution; adding into a reaction kettle for reaction, wherein the liquid sodium hydroxide is added into the reaction kettle via an upper liquid inlet tube, the aluminum alkali is added into the reaction kettle via a lower liquid inlet tube, and the upper liquid inlet tube and the lower liquid inlet tube are connected in parallel to the reaction kettle; opening an overflowing valve so that a reaction liquid flows into an aging groove for aging until an internal liquid level of the reaction kettle is flush with the overflowing valve when a liquid level in the reaction kettle is raised to be approximate to a reaction kettle cover, and closing the overflowing valve; repeating accordingly; and washing and drying the aged product to obtain the Ni-Co-Al ternary precursor. By a method of the liquid sodium hydroxide injected via the two liquid inlet tubes, a part of liquid sodium hydroxide is guided into the reaction kettle via the upper liquid inlet tube, the pH in an existing technical reaction can be locally reduced, the crystal nucleus can be obviously reduced, the D0 is improved, and the overflowing valve is adjusted to be an intermittent opening state from a normally-open state.

The invention discloses a method for producing efficient protein feed by feed enzymes cooperated with bacillus coagulans, and belongs to the field of biotechnology fermentation. The bacterium enzymes are used for treating bean meal in a cooperated way; the sterilization treatment on the bean meal is not needed; the facultative anaerobic and anaerobic fermentation are performed in the whole process; the energy consumption is low; the dry substance loss is low. The technical flow process operation is simple and convenient; the method is suitable for direct production and feeding in a culture plant and is also suitable for scaled production in a feed plant; in addition, the raw material cost is low; the method is suitable for industrial production. The fermented bean meal has high acid fragrance; the palatability is high; the pH is 3.2 to 4.5; the organic acid content is 2.8% or above; the acid dissolution protein is improved by 6.5 times or above through being compared with that before the fermentation; the soluble protein with the relative molecular weight within 500 is 60% or above; the urease activity is lower than 0.073U / g; the cotton seed sugar content is lower than 0.42 percent; the stachyose is lower than 0.035 percent; the spore number of the bacillus coagulans is 2.0*10<9>cfu / g or above.

The invention provides a new production process of titanium white powder and low-sulfur titanium white powderfor a denitrification catalyst. The production process comprises the following steps: after obtaining competently washed metatitanic acid, neutralizing with ammonia water, heating materials to 70-75 DEG C, and curing for 1 hour while keeping the temperature; dry-pressing slurry through a filter press, removing filter cakes, crushing the filter cakes, and drying and calcining in a rotary kiln; and then, discharging, cooling, conveying to a storage bin, and pulverizing through a micron pulverizer to obtain the pure titanium powder finished product for a nano catalyst. Preferably, after completing the step of curing while keeping the temperature, the low-sulfur catalytic titanium white powder can be obtained by adding a step of washing with deionized water and keeping the subsequent process flow unchanged, and the sulfur content is less than 0.4%.

The invention discloses a method for preparing high-quality pork feed by using feed mulberry. According to the invention, the method comprises the steps of harvesting feed mulberry in a mowing period,conducting smashing directly by a pulverizer to obtain particles of 0.5 cm, adjusting the moisture content of the particles, then uniformly mixing the particles with a special fermentation preparation, conducting compacting and sealing, then conducting anaerobic fresh storage, and after 2 weeks and anaerobic fermentation is stable, mixing the fermented material with other feeds for direct feeding. The stored feed mulberry of the invention overcomes the problem of poor palatability of feed mulberry after silage, improves the palatability of the pig, and increases the feed intake. The technology is simple in preparation, and is less affected by external environmental conditions, and all farms can separately produce the feed mulberry of the invention. The fermented feed mulberry does not require secondary processing, and does not require additional storage steps, thereby solving the problem of feed mulberry storage, achieving annual supply and reducing nutrient loss during storage.

The invention discloses a modified biomass charcoal-based saline-alkali soil improver, which is prepared from the following materials in percentage by weight: 10 to 40 percent of organic acid modifiedbiomass charcoal, 30 to 70 percent of desulfurized gypsum and 10 to 40 percent of an acidic organic fertilizer. The invention also discloses a preparation method of the improver and a saline-alkali soil improvement method based on the improver. The improver can significantly reduce the pH value of saline-alkali soil, reduce the total salt content and improve the plant emergence rate.

The invention belongs to the field of post-treatment of titanium dioxide, and particularly discloses a zero emission process for treating titanium chloride slag. The process includes the following steps of (1) alkali leaching; (2) solid-liquid separation; (3) secondary precipitation; (4) micro-filtration / ultra-filtration membrane filtration; (5) primary membrane purification; (6) membrane concentration; and (7) secondary membrane purification. In the process, the purpose is to treat heavy metal ion impurities in the titanium chloride slag and recycle chlorine ions, and solid waste slag is converted to harmless solid to be reused for bricks, tiles, cement and the like of building materials; concentration and purification are performed through a membrane separation integrated process so thatlight salt brine used for the chloro-alkaline industry can be obtained for use; due to implementation of the process, valuable resources in the titanium chloride slag are recycled and utilized, moreimportantly, the titanium chloride slag serious in pollution to environment protecting is completely and thoroughly treated, the bottleneck that the chlorination method solid waste slag is difficult to treat is broken through, a process for producing titanium dioxide in a chlorination method gets one important step in environment protecting direction, and obvious advancement is achieved.

The invention discloses a biological seedling strengthening agent capable of enhancing rice stress resistance and a preparation method of the seedling strengthening agent, and belongs to the technicalfield of agricultural production. The seedling strengthening agent comprises, by weight, 5-20 parts of biological bacterium agents, 5-40 parts of distillers' grains, 10-30 parts of urea, 2-10 parts of potassium magnesium sulfate, 6-15 parts of calcium superphosphate, 0.1-1 part of paclobutrazol and 0.1-1 part of naphthylacetic acid. Biological bacterium agent strains are streptomyces albus, and the collection number is CGMCC No.15117. The biological seedling strengthening agent is safer to use and cannot generate chemical injury. Low-temperature resistance of rice can be enhanced, normal growth of the rice cannot be affected by low temperature, the distillers' grains are changed into wealth, soil is adjusted by acidity of the biological seedling strengthening agent, and nutrition is provided for the rice by the aid of medium trace elements in the biological seedling strengthening agent.

The invention relates to a desalinated seawater mineralization system and a manufacturing method for desalinated seawater mineralization. The system of the invention is composed of a gas-liquid mixer (4), a mineralization tower (9) and a fluctuation chamber (14). The gas-liquid mixer (4) reinforces desalinated seawater mineralization by the nitrogen dioxide pipeline aeration mode. The mineralization tower (9) enables carbon dioxide and a calcite filler to fully react so as to enhance desalinated seawater mineralization. The fluctuation chamber (14) enables unreacted carbon dioxide to be dissolved out so as to increase oxygen content, raise pH value and enhance safety of desalinated seawater. The gas-liquid mixer (4) is composed of a main body of the gas-liquid mixer (4), a water through hole (18), a rotary locking groove (19), a separation blade (20), a center shaft (21), a water inlet opening (24) and a rotary wheel plate (22). The system has a reasonable structure, is scientifically designed, is convenient to use, is simple to manufacture, and solves disadvantages of a traditional mineralization device. By the system, mineralization effect of desalinated seawater is raised, and mineralization time of desalinated seawater is shortened.

The invention belongs to the technical field of fertilizers, in particular to a special biomass carbon-based fertilizer for leaf vegetables and a preparation method thereof. The fertilizer is preparedfrom the following raw materials in parts by weight: 200-300 parts of urea, 200-300 parts of potassium sulfate, 120-180 parts of monoammonium phosphate, 150-200 parts of biomass carbon, 40-50 parts of a filler and 20-30 parts of an adhesion promoter, wherein the biomass carbon is treated through wood vinegar spaying. The special biomass carbon-based fertilizer for leaf vegetables can reasonably and sufficiently provide nitrogen-potassium nutrients needed for crops, avoids fertilizer needing characteristics of chlorine-avoiding crops in formula, is more scientific and reasonable in formula, and is wider in applicability.

Method or system comprising the step of not only extracting cobalt from defective positive electrodes with a solvent but also extracting cobalt from extraction residue obtained from defective positive electrodes and magnetized matter obtained from waste lithium ion batteries and runoff batteries (step S100); the step of removing impurities contained in the cobalt extract, thereby obtaining a clean cobalt solution (step S200); the step of forming a cobalt hydroxide cake from the clean cobalt solution (step S300); and the step of electrolyzing an electrolytic solution of cobalt containing the cobalt hydroxide cake as an electrolyte to thereby precipitate metallic cobalt (step S400).