59results about How to "To achieve the purpose of desalination" patented technology

The invention discloses a method for removing salt by using a fluid battery and application thereof. According to the method, salt removal is performed by a salt-removing fluid battery device, whereinthe salt-removing fluid battery device uses a positive active material as a positive electrode of the fluid battery, a negative active material as a negative electrode of the fluid battery and a saltsolution as an intermediate fluid electrolyte of the fluid battery. According to the invention, organic or inorganic active materials are used as the positive and negative electrode materials of thefluid battery, a salt-removing fluid battery is built in a fixed order, and the salt removing purpose is achieved through charging and discharging; during charging, through respective redox reactionsof the organic active positive and negative electrode materials, under an interfacial effect of an ion exchange membrane, electrodialysis is coupled to remove anions and cations in the salt solution,so that the purposes of removing the salt and removing other ions are achieved. The salt-removing fluid battery used in the invention is simple, low in cost and environment-friendly, shows excellent electrochemical performance, good cycle stability and salt removing capacity, and is applicable to the field of seawater salt removal and the like.

The invention belongs to the field of treatment of waste organism, relates to a reactor using supercritical water oxidation or evaporating method to realize innoxious treatment of organic wastewater and refuse and discloses a zoning method of a supercritical water treatment reactor of waste organism; the reactor comprises a pressure-bearing chamber (2) composed of a top part, a straight cylinder part and a conical bottom part, an inner chamber (1) which is arranged in the pressure-bearing chamber (2) and composed of evaporation walls; the inner chamber (1) also comprises the top part, the straight cylinder part and the conical bottom part, and shares the same shape with the pressure-bearing chamber (2), size thereof is smaller than the size of the pressure-bearing chamber (2); gaps are reserved between the inner chamber (1) and the pressure-bearing chamber (2) as evaporation wall water area( filled with clean evaporated wall water); the place where the inside of the inner chamber (1) clings to the wall is an evaporation wall water film area; the area outside the top part of the inner chamber (1) and the evaporation wall water film area of the straight cylinder part is called the reaction area, and the area outside the evaporation wall water film area of the conical bottom part is called the dissolving salt area.

The invention discloses a Ti3C2-containing composite semipermeable membrane used for light evaporation of water, and a preparation method and application of the membrane. The method includes the following steps that 1, a Ti3AlC2 raw material is added into an etching agent, the mixture is stirred fully, suspension liquid is obtained, and the suspension liquid is subjected to centrifuging suspensionand drying in vacuum; 2, Ti3AlC2 powder and an intercalation solvent are mixed and stirred, and the mixture is subjected to centrifuging suspension and drying in vacuum so as to prepare the Ti3AlC2 powder with a layered structure; 3, cellulose nitrate is used for preparing a semipermeable membrane precursor solution; 4, the prepared Ti3AlC2 powder with the layered structure is added in the semipermeable membrane precursor solution, the mixture is stirred evenly, uniformly spread in a flat-base container, and then naturally dried, and Ti3C2-containing composite semipermeable membrane is obtained. According to the preparation method, the process is simple, the cost is low and the practicability is high. The photothermal conversion effect of the prepared composite semipermeable membrane is good, and the composite semipermeable membrane has a very good application prospect in many fields such as light evaporation of water and water desalination.

The invention discloses a desalting method of a combination of a microbiological fuel cell and capacitive deionization. The method comprises the steps of 1, preparation of a capacitive deionization electrode, activated carbon fiber, acetylene black and polyvinylidene fluoride are mixed, evenly coated on the surface of a titanium collector, and the titanium collector is dried to form the capacitivedeionization electrode; 2, starting of the microbiological fuel cell, electricigens and nutrient solutions are mixed and put into an anode chamber, and the nutrient solutions are changed regularly; aqueous solutions containing potassium ferricyanide are added into a cathode chamber, a middle chamber between the anode chamber and the cathode chamber is separated by adopting the capacitive deionization electrode to form a desalination chamber, and the desalination chamber is provided with NaCl aqueous solutions; graphite felts are adopted as electrode materials of the cathode and anode electrodes, the cathode chamber, the anode chamber and the middle chamber are sealed areas and isolated from outer environment, and a device is operated; 3, electrode regeneration. According to the desaltingmethod of the combination of the microbiological fuel cell and the capacitive deionization, desalination can be conducted in a better way and effects are excellent after the microbiological fuel celland the capacitive deionization are combined.

The invention discloses a method for preparing chondroitin sulfate by virtue of ultrahigh-pressure micro-jet ultrafiltration, and the method comprises the following steps of: (I) pretreatment; (II) extraction of an ultrahigh-pressure micro-jet alkaline liquid; (III) enzymolysis; (IV) decoloration; (V) ultrafiltration concentration; (VI) ethanol washing and dehydration, and drying and grinding to obtain a finished product. The method disclosed by the invention can be used for obviously improving the extraction rate of chondroitin sulfate, wherein the extraction rate is improved to 38-40.5%, and the extraction time is reduced to 20-80 minutes; the method can be used for solving the problems in purification and concentration, achieves an aim of desalination, is simpler to operate, and can be used for overcoming the shortcomings of an existing method that a large quantity of strong base is used and the salt content is high; meanwhile, the volume of the extraction liquid is reduced to 25-50% of that of the original extraction liquid, and the ethanol use is saved.

The invention discloses an ecological engineering regulation method for fast reducing salinity of a sand coated district which belongs to the marine solonchak improving method technical field. The invention comprises: firstly, making out a whole plane; secondly, implementing dredgepump filling to form a soil layer with the upper part rough and the lower part fine; thirdly, a gutter is arranged with a depth of over two meters and a space between of less than two hundred meters to control the flow direction of groundwater flow of strip check and to realize an entire desalinisation to prevent the uprise of salt. The invention forms a new soil layer structure with the upper part rough and the lower part fine, increases a coarse sand content of upper soil and obviously improves soil tilth; thereby facilitating the leaching of the salt. Only half a year is needed and then the salt content of a plow layer is reduced from six point five four gram per kilogram to one point two three gram per kilogram; thereby speeding up the improvement and utilization speed of the marine solonchak and restraining the uprise of salt. The invention reduces the governance process for the marine solonchak, speeds up a startup time, has obvious economic benefits and is applicable to the marine solonchak district and can be popularized and applied in the sand coated district.

The invention provides a method for determining a content of taurine in a solution and a method for purifying the taurine. The method comprises the steps of determining the refractive index of a to-be-detected solution, wherein the to-be-detected solution contains taurine or salt thereof and impurities, and the impurities comprise at least one of ethylene glycol, sodium isethionate, sodium sulfate and polyethylene glycol; establishing a standard curve of the taurine concentration in the taurine solution based on the refractive index; and performing optical detection on the to-be-detected solution, and determining the content of the taurine or the salt thereof in the to-be-detected solution according to the position of the obtained optical detection value in the standard curve. Through the method, the content of taurine in various taurine solutions with complex components can be effectively detected.

The invention discloses a comprehensive treatment method for coastal saline alkali soil. The comprehensive treatment method includes the steps: (1) removing surface soil: laying thin sponge on the soil surface of a saline alkali land, drying the soil under the blazing sun for 2-3 days to enable salinity in the soil to accumulate in the surface layer of the soil through evaporation, and removing the soil on the surface layer; (2) draining with concealed tubes: mounting concealed tubes at a certain depth from the surace of the saline alkali land at intervals, wherein small holes for dischargingsalinity of the soil on the profile are distributed in the concealed tubes and covered with non-woven fabrics; (3) draining ground water: furrowing the surface layer of the soil at the interval of 3-3.2 m to achieve ground water discharge; (4) applying soil conditioners into the soil. The comprehensive treatment method has the advantage that the salinity content of the soil on the profile of the saline alkali land can be reduced remarkably according to a salinity reduction strategy of 'eradication, water discharge and chemical application'.

The invention discloses a method for extracting a cardamine hirsute plant selenium protein. The method comprises the following steps: performing primary extraction, namely putting 200g of fresh leavesof cardamine hupingshanesis into 800ml of a precooled sample extract, homogenizing (intermittently, at a low temperature) by using a high-speed tissue homogenizer, keeping the temperature at 4 DEG C,centrifuging for 30 minutes at a rotation speed of 6000r/minute, collecting supernate, and measuring a volume accurately; performing salt separation, namely with slow stirring, slowly putting (NH4)2SO4 into the supernate till a saturation degree of 35%, keeping the temperature of 4 DEG C, leaving to stand for 60 minutes, homogenizing by using the high-speed tissue homogenizer at a speed of 6000r/minute, centrifuging for 30 minutes, and abandoning precipitate. By adopting the method, the purpose of extracting a plant selenium protein can be achieved, the method has the characteristics of beingsimple in process and high in extraction efficiency, convenience can be brought to scientific operators to utilize the plant selenium protein in cardamine hupingshanesis, and the problems that not only is a conventional extraction technique complex in procedure, but also the plant selenium protein in the cardamine hupingshanesis cannot be effectively extracted, and organic plant selenium cannot be well developed and utilized by scientific operators, can be solved.

The invention relates to the technical field of graphene modified materials, and concretely relates to a graphene modified material, and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a graphene oxide@Fe3O4 material, then performing reduction treatment on the surface of graphene oxide to obtain modified graphene, and finally under the action of an activating agent , grafting weakly acidic polyacrylic resin to obtain the graphene modified material. The prepared graphene modified material can be applied to medicine extraction and purification, rare earth element separation and purification and heavy metal treatment of sewage.

The invention discloses a gas-hydrate-method seawater desalination system. The gas-hydrate-method seawater desalination system has the advantages that gas recycling between a first reaction kettle anda second reaction kettle is achieved, gas hydrate can be generated through gas and seawater so as to achieve seawater desalination to generate desalted water, and seawater desalination degree is increased greatly; a pressurizing system is arranged on a pipeline system, and the pressure of a gas hydration reaction system can be regulated through the piston pressurizing system so as to increase seawater desalination efficiency; in general, the gas hydrate generated by the gas and the seawater is decomposed to obtain the desalted water, seawater desalination is achieved, the seawater desalination effect can be greatly improved by the system, cost can be lowered, and the system is worthy of popularization and application.

The invention relates to the field of seawater desalination, and discloses an automatic cleaning porous graphene seawater desalination device. The device comprises a seawater pretreatment unit, an automatic cleaning unit, a porous graphene desalination unit and a water storage unit, wherein the seawater pretreatment unit comprises a water intake pipe and a first water pump; the water intake pipe is connected with a water inlet of the first water pump; the porous graphene desalination unit is connected with a water outlet of the first water pump; the automatic cleaning unit comprises a blowdown pool and a second water pump, wherein the blowdown pool is connected with a water outlet of the second water pump, and a water inlet of the second water pump is connected with the porous graphene desalination unit; the porous graphene desalination unit comprises a shell, and is connected with the seawater pretreatment unit; the shell is internally provided with a graphene screen body layer; the graphene screen body layer is porous graphene with hole size of 1nm; the water storage unit comprises a fresh water tank, and the fresh water tank is connected with the porous graphene desalination unit.

The invention discloses an oxygen-limited microbial desalting tank and a wastewater treatment method. The oxygen-limited microbial desalting tank comprises an anode chamber, a desalination chamber, acathode chamber, an anode electrode, a cathode electrode, an anion exchange membrane, a cation exchange membrane, an aeration device, a dissolved oxygen detector and an external circuit. The wastewater treatment method comprises the following steps: adding high-nitrogen and biochemical wastewater into the anode chamber; adding high-salinity wastewater or seawater into the desalination chamber; adding effluent from the anode chamber into the cathode chamber; inoculating anaerobic sludge in the anode chamber, and inoculating sludge containing ammonia oxidizing bacteria and sludge containing anaerobic ammonia oxidizing bacteria in the cathode chamber; and starting the cathode chamber aeration device. By adopting the oxygen-limited microbial desalting tank disclosed by the invention, the triple effects of organic matter degradation, denitrification and desalting of wastewater can be simultaneously realized.

The invention relates to the field of seawater desalting and discloses a method for desalting seawater by adopting porous graphene. The method comprises the following steps: S1, pre-treating the seawater: pre-treating the seawater and filtering for a plurality of times to obtain seawater capable of being used for desalting; S2, carrying out desalting treatment: carrying out desalting on the seawater capable of being used for desalting in step S1 through a porous graphene tank; collecting to finally obtain potable freshwater. Compared with a traditional reverse osmosis technology, additional pressure does not need to be applied to the seawater so that the cost is lower, the structure is simpler and the filtering efficiency is higher; the salt concentration of the obtained potable freshwater is lower than 500mg/L; under the same pressure, the filtering speed of the porous graphene is hundreds of times faster than that of the traditional reverse osmosis technology; under the same filtering speed, more energy sources can be saved; the thickness of the porous graphene is preferred and a slope roof structure is adopted, so that compared with a horizontal structure, the structure has a better filtering effect and can be used for effectively preventing blocking.

The invention discloses potherb mustard shredded meat capable of cooling, refreshing and stimulating the appetite. The potherb mustard shredded meat is prepared from the following raw materials in parts by weight: 250-300 parts of fresh potherb mustard, 20-30 parts of pork lean, 4-5 parts of fresh onions, 5-6 parts of red bean paste, 2-3 parts of rapeseed oil, 5-6 parts of leek flowers, 10-15 parts of duck bones, 2-3 parts of mint leaves, 1-2 parts of zornia gibbosa, 3-4 parts of dried orange peel, 2-4 parts of fresh winter sweet flowers, 10-15 parts of chili powder, 8-10 parts of pepper powder, 8-10 parts of yellow wine, 5-6 parts of white sugar, an appropriate amount of salt, an appropriate amount of water, and an appropriate amount of food-level baking soda. The potherb mustard shredded meat capable of cooling, refreshing and stimulating the appetite disclosed by the invention is prepared sequentially through the following steps: preserving the potherb mustard, desalinating the preserved potherb mustard, mixing the desalinated potherb mustard with auxiliary materials, sterilizing the potherb mustard mixed with the auxiliary materials, and subpackaging the sterilized potherb mustard to obtain finished products. The potherb mustard shredded meat has the efficacies of cooling, refreshing, stimulating the appetite, and being good in taste and mouth feel. The red bean paste which is added has the efficacies of dispelling the wind and heat, moistening skins and maintaining beauty. Varied Chinese herbal medicines which are added, such as the mint leaves, have the efficacies of dispelling wind and heat and clearing the throats.

The invention relates to an anaerobic and aerobic composite biological treatment desalination method. The method comprises the following steps: sequentially carrying out anaerobic reaction treatment and aerobic reaction treatment on sewage to be treated under the action of anaerobic sludge and aerobic sludge, and discharging salt in the sewage by mixing the salt with the anaerobic sludge and the aerobic sludge in the form of inorganic salt sludge, wherein desalted sewage is obtained after anaerobic reaction treatment and aerobic reaction treatment. According to the invention, salt contained ina sewage system is treated by an anaerobic and aerobic composite biological method so as to form settleable substances, and the settleable substances are discharged out of the system along with sludge, so the purpose of desalination is achieved; and a natural separation mode is adopted for salt separation or a precipitation tank is not independently arranged, and complex mechanical equipment is not needed, so power consumption is reduced, system construction investment is reduced, operation is easy, and management and operation are convenient.

The invention relates to a method for recycling pulping and papermaking sewage. The method comprises the following steps: adding a sulfate and a flocculating agent into to-be-treated sewage for pretreatment, then sequentially carrying out anaerobic reaction treatment and aerobic reaction treatment under the action of anaerobic sludge and aerobic sludge, mixing salt in the sewage in the form of inorganic salt sludge in the anaerobic sludge and the aerobic sludge, and discharging to obtain desalted sewage; and finally, adding a sulfate, a redox agent and a flocculating agent into the desalted sewage to obtain treated clean water reaching the standard, and recycling the treated clean water to a papermaking workshop. According to the invention, COD, color reversion substances, suspended matters in water and other pollutants in sewage are effectively removed; the requirement for pulping and papermaking reuse water is completely met, color reversion of reuse water is effectively prevented, the paper quality is not affected during cyclic utilization, complex mechanical equipment is not needed, power consumption is reduced, system construction investment is reduced, operation is easy, andmanagement and operation are convenient.