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

The invention discloses a coastal kaline soil forestation method, comprising the following steps: A. trenching and building ridges, and building rain collection beds; B. setting rain collection surfaces; C. digging plant pits, and setting salt isolation layers; D. collecting tree species and planting; E. setting surface cover layers of plant pits; F. tending, and weeding at proper time; wherein, the step of trenching and building ridges, and building rain collection beds is based on the design of forestation spacing, and flow collection trenches are dug at interval of a row spacing along the direction of rows; the depth of the trench bottom is 20cm to 25cm; the ground surface between the ridge and the trench bottom is trimmed to form a shallow v-shaped groove; the sloping surfaces are leveled and compacted to form the rain collection beds. The coastal moderate kaline soil forestation technology of the invention greatly increases the water content of soil, and the salt is efficiently leached and reduced, thereby efficiently improving the survival rate, save rate and growing speed of forests; the survival rate of forests reaches greater than 85%.

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 present invention relates to a waste water treatment, recovery and reutilization process, in particular it relates to a recovery and reutilization process of waste water produced by oil-refining and chemical catalyst production. Said method is characterized by including the following several main steps: firstly, removing silica gel or silicon oxide, sodium salt and suspension which are harmful to production from the waste water, recovering valuable ammonia and clean water from the waste water and reutilizing them in the production process. Besides, said invention also provides the concrete measures of the above-mentioned every step.

The invention discloses Method for performing continuous low-energy-consumption salt removal by utilizing flow battery redox reaction as well as application thereof. The method comprises the step of removing salt through a salt-removing flow battery device, wherein the salt-removing flow battery device takes positive and negative electrode active flow materials as the positive and negative electrodes of the flow battery as well as takes a salt solution as electrolyte of the flow battery; and the salt-removing flow battery device also comprises an isolating device for isolating the salt solution from the positive and negative electrode active flow materials as well as also comprises an anion exchange membrane and a cation exchange membrane. The salt-removing flow battery device is low in flow electrode salt-removing work voltage, extremely low in energy consumption, high in specific capacity and high in cycle performance, and the positive and negative electrode materials can be reused,so that the true salt-removing aim can be achieved. The method provided by the invention is low in low energy consumption, can continuously perform electrochemical redox reaction and environment-friendly novel seawater desalination technology, and can be used for solving the problem of insufficient supply of fresh water resources.

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 an ultrasonic-microwave synergic extraction method of chondroitin sulfate, which comprises the following steps: cleaning processing leftovers of tilapia, baking, pulverizing, degreasing, and passing through a 60-mesh screen to obtain fishbone powder; extracting in an ultrasonic-microwave extraction instrument; after the extraction finishes, leaching, filtering, cooling, regulating the pH value, and adding 2% of compound protease to carry out enzymolysis for 2 hours; and after the enzymolysis finishes, inactivating the protease, decolorizing, centrifugalizing, purifyingand concentrating the supernatant with an ultrafiltration apparatus, and precipitating with ethanol to obtain an insoluble substance which is the chondroitin sulfate. The method fully utilizes the cavitation action of ultrasonic vibrations and the high-energy action of microwaves, shortens the extraction time, and obviously enhances the extraction efficiency, thereby greatly lowering the production cost. The invention is simple to operate, and has the advantages of short extraction period, high extraction rate and high product purity.

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 present invention discloses a black-bone chicken nourishing pickled brassica juncea shredded meat which is prepared from the following raw materials in parts by weight: fresh brassica juncea 250-300 parts, lean pork 20-30 parts, pumpkin powder 9-10 parts, black-bone chicken meat 5-7 parts, rice grain sprouts 7-9 parts, wax gourd 8-10 parts, foeniculum vulgare 10-15 parts, white pepper 10-12 parts, fermented soya bean sauce 10-15 parts, sea cucumbers 2-3 parts, corn stigma 1-2 parts, hawthorn leaves 3-4 parts, thyme 3-4 parts, white sugar 5-6 parts, and an appropriate amount of edible salt, water, and food grade baking soda. The black-bone chicken nourishing pickled brassica juncea shredded meat is obtained by conducting the processes of pickling, desalinating, accessory materials blending, sterilizing, and sub-packaging successively, can nourish yin and maintain beauty, and is excellent in taste and mouthfeel; the added wax gourd has effects of losing weight and keeping fit, and lowering blood pressure; the added sea cucumbers and other Chinese herbal medicines have effects of enhancing physical fitness, regulating immunity, preventing aging, and improving sleep.

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.

A disclosed salt discharging system in a Bayer-process aluminium oxide production process comprises a strong-base storage tank, a salt settling tank, an overflow tank, a circulating mother liquor tank, filtering equipment and a causticization system; an evaporator-station discharging pipe in the aluminium oxide production process is communicated respectively with the strong-base storage tank and the circulating mother liquor tank; a discharge port of the strong-base tank is communicated with a feed inlet of the salt settling tank via a pump and a pipeline; the upper part of the salt settling tank is provided with an overflow pipe, and the bottom of the salt settling tank is provided with a bottom flow outlet; the overflow pipe is communicated with the overflow tank, and the bottom flow outlet is communicated with the causticization system via the filtering equipment; and a discharge port of the overflow tank is communicated with the circulating mother liquor tank via a pump and a pipeline. The invention also discloses a salt discharging method in the Bayer-process aluminium oxide production process, and the salt discharging system in the Bayer-process aluminium oxide production process is employed. Two functions such as alkali supplement and salt discharging during aluminium oxide production are both provided, running time of a forced circulation evaporator is reduced during aluminium oxide production, and energy consumption and equipment maintenance cost are reduced.

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 coastal kaline soil forestation method, comprising the following steps: A. trenching and building ridges, and building rain collection beds; B. setting rain collection surfaces; C. digging plant pits, and setting salt isolation layers; D. collecting tree species and planting; E. setting surface cover layers of plant pits; F. tending, and weeding at proper time; wherein, the step of trenching and building ridges, and building rain collection beds is based on the design of forestation spacing, and flow collection trenches are dug at interval of a row spacing along the direction of rows; the depth of the trench bottom is 20cm to 25cm; the ground surface between the ridge and the trench bottom is trimmed to form a shallow v-shaped groove; the sloping surfaces are leveled and compacted to form the rain collection beds. The coastal moderate kaline soil forestation technology of the invention greatly increases the water content of soil, and the salt is efficiently leached and reduced, thereby efficiently improving the survival rate, save rate and growing speed of forests; the survival rate of forests reaches greater than 85%.

The invention relates to a desalination process system utilizing waste heat. The system comprises a multi-effect evaporator, a heat exchanger, a pipeline, a desalination water pump, a water supply pump, a crystallization tank, a boiler, a desalination water tank and a circulating pump. Boiler flue gas waste heat or low-enthalpy-value steam pumped out from a low-pressure cylinder of a steam turbine is used as an energy source, and through the heat exchanger and the multi-effect evaporator, salt-containing water is changed into distilled water to realize a desalination purpose; the produced distilled water can be directly used as production water for a power plant or domestic water. According to the system, compared with the prior art, the electricity consumption, the occupied land size and the operation cost are greatly reduced, and secondary pollution caused by medicine utilization is avoided; the system is safe, simple, practical and reliable; by recycling flue gas exhaust heat discharged from the boiler or low-enthalpy-value steam pumped out from the steam turbine, the desalination process operation cost is greatly reduced, and a very high economic value is realized.

The invention provides a preparation method of a soy sauce residue biochar heavy metal soil conditioner and a product thereof. The preparation method comprises the following steps of: taking a waste byproduct high-salt soy sauce residue obtained by fermenting soy sauce as a raw material, and preparing original biochar; carrying out surface active adsorption group chemical modification on the obtained biochar by using phosphoric acid and removing salt of the biochar at the same time; and using an earthworm extraction bio-enzyme agent for assisting the charcoal to form the soy sauce residue biochar heavy metal soil conditioner. According to the method, the biochar and the earthworm bio-enzyme agent are mixed, so that the improvement efficiency of the biochar by earthworms due to limitation of feeding and activity of the earthworms is broken through, the quality uniformity of the improved charcoal is improved, and compared with biologically improved biochar, the heavy metal adsorption capacity of the biochar improved by the bio-enzyme agent is obviously improved.

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 discloses a preparation method and application of a sodium vanadyl fluorophosphate / graphene composite electrode material. The method is based on the principle that a Faraday capacitor and an electric double-layer capacitor store charges. In a capacitive deionization device, under the condition of a certain voltage, one pole takes a sodium vanadium oxyfluorophosphate / graphene compoundelectrode as a Faraday capacitor to adsorb sodium ions, and the other pole takes activated carbon as an electric double-layer capacitor to adsorb chloride ions, so that sodium chloride is removed, and the purpose of desalination is achieved. Chlorine ions and sodium ions can be cyclically adsorbed and desorbed by the material by controlling the magnitude of applied voltage and adjusting the positive electrode and the negative electrode; the method is simple in operation and is free of secondary pollution and assistance of other chemical substances. The adsorption capacity of the hybrid capacitive deionization device composed of the sodium vanadium oxyfluorophosphate / graphene composite material and the activated carbon electrode to sodium chloride can reach 175.94 mg / g, and the hybrid capacitive deionization device has low energy consumption of 0.35 kWh / kg / NaCl<-1>. The application is a desalination method with great prospects.

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 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 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.