68results about How to "Efficient desalination" patented technology

The invention discloses an efficient treatment system and a treatment method for organic wastewater of bulk drug production in the pharmaceutical industry. The system comprises a high-concentration wastewater pretreatment unit, a triple effect evaporation unit, a biochemical treatment unit, a sludge pressure filtration unit and an activated carbon filtration deep treatment unit. By introduction ofa series of treatment means such as iron carbon reduction, catalytic oxidation, coagulation air floatation, triple effect evaporation, biochemical reaction and the like into the unit system, physicochemical treatment and biochemical treatment are combined together, removal efficiency of pollutants is increased, and the pollutants such as COD (chemical oxygen demand), ammonia nitrogen, SS (suspended solids) and the like in the wastewater are effectively degraded.

The invention discloses a deep treatment method of high-concentration organic wastewater. The method comprises the following steps: step one, coagulating and precipitating; step two, carrying out ultraviolet-ozone-ultrasound combined reaction stage; step three, carrying out electrolysis treatment through three dimension electrodes; step four, recycling heavy metals; and step five, carrying out ultrafiltration-electrodialysis coupled desalinization. The deep treatment method of high-concentration organic wastewater is free of biological treatment processes, free of pretreatment, high in desalinization rate, simple to operate, high in efficiency, free of secondary pollution and low in cost, and is capable of completely removing organic matters, recycling the heavy metals and recycling the high-concentration organic wastewater.

The invention relates to a membrane distillation device for seawater desalination. The membrane distillation device comprises a hydrothermal input chamber, a vacuum cooling chamber and a condensationtube, the outer layer of the device is a shell wall, a distillation membrane layer is arranged in the device and is a superhydrophobic membrane, the hydrothermal input chamber is arranged between theshell wall and the distillation membrane layer, the vacuum cooling chamber is arranged inside the distillation membrane layer, and the condensation tube is arranged in the vacuum cooling chamber in apenetrating manner. The membrane distillation device is of a reasonable structure and has the characteristics of high distillation efficiency, good energy saving performance and stable operation.

The invention discloses an efficient seawater desalination and comprehensive utilization method. The efficient seawater desalination and comprehensive utilization method comprise following steps: carrying out pretreatment on raw seawater, filtering using a microfiltration and/or ultrafiltration device to obtain pretreated seawater; adding a scale inhibitor into the pretreated seawater; pressurizing and conveying the pretreated seawater into a primary nanofiltration device; adjusting the pH value of obtained primary nanofiltration produced water to 3-7, pressurizing and feeding into a secondarynanofiltration device; mixing obtained primary nanofiltration concentrated water with obtained secondary nanofiltration concentrated water; adding a precipitant to react with SO4<2-> in an obtained concentrated water mixed solution to generate calcium sulfate precipitate; continuously adding lime emulsion into an obtained reacted mother liquor to react with Mg<2+> in the mother liquor to generatemagnesium hydroxide precipitate, adjusting the pH value of the residual mother liquor to 7-8, producing sodium chloride and calcium chloride through multi-effect evaporation, adjusting the pH value of obtained secondary nanofiltration produced water to 6.5-7.8, and pressurizing and introducing the secondary nanofiltration produced water into a reverse osmosis seawater desalination device. According to the efficient seawater desalination and comprehensive utilization method, seawater grading pretreatment process is adopted, the component difference of various concentrated water is fully utilized, seawater desalination and the chemical technology are combined, and the fresh water yield and the seawater utilization rate are increased.

The invention relates to a wastewater treatment method. The method comprises the following steps of: the pre-treatment on high-salt wastewater is carried out, the liquid-solid separation of the pre-treated high-salt waste water is carried out; the separated solid impurities are removed, and the separated waste water is gasified and treated to form an exhaust gas; the waste gas and the heating airare mixed and sent to an exhaust gas treatment system for incineration to generate high-temperature tail gas; the cooling treatment is carried on the high-temperature tail gas to form liquid and gaseous substances, then the liquid and gaseous substances are treated successively or simultaneously as follows: the liquid substances are separated by membrane, and the water produced by the membrane isdischarged directly after standard separation, the remaining non-standard parts are returned to continue processing; the gaseous substances are further cooled, and then is washed by the spray liquid to become an absorption liquid, and the liquid substances are separated by membrane, and the water produced by the membrane is discharged directly after standard separation, the remaining non-standardparts are returned to continue processing. According to the wastewater treatment method, the organic substances can be efficiently degraded, and meanwhile, the organic substances can be efficiently desalted.

The present invention provides an electrode comprising a current collector layer, a porous electrode layer and an ion exchange layer which are arranged in this order, wherein the ion exchange layer contains a vinyl alcohol copolymer (P) copolymerized with 0.1 to 50 mol % of a monomer having an ionic group and the porous electrode layer contains a carbon material. This electrode has a low electrode resistance, and, therefore, is useful as an electrode for a flow-through capacitor.

The invention discloses a solar seawater desalination device with a water surface floating type condenser. The solar seawater desalination device sequentially comprises a light-transmitting and heat-insulating plate, a photo-thermal plate, a capillary water absorption body, a hydrophobic and breathable body and the condenser from top to bottom. The condenser is externally connected with a fresh water outlet pipe and a water collecting tank. And the light-transmitting heat-insulating plate covers the photo-thermal plate to inhibit convective heat transfer loss. The photo-thermal plate comprises a heat conductor and a light absorber covering the surface, the light absorber is carbon black nanoparticles bonded by ethyl cellulose and terpilenol, and the heat conductor is a thin aluminum plate. The capillary water absorption body is made of a hydrophilic porous material and absorbs water from the water body to the lower surface of the photo-thermal plate. The hydrophobic and breathable body is made of a polymer porous hydrophobic material, only allows steam to permeate and prevents water from permeating. The condenser is made of thin aluminum plates, aluminum fins are arranged in the condenser for enhancing condensation heat exchange, and a fresh water outlet pipe is installed at the bottom of the condenser for transferring fresh water to the water collecting tank.

The invention relates to a biomass hydrogel/nano carbon material-based solar evaporator, which comprises a heat collection evaporator, a condenser and a water collector; the heat collection evaporator is used for converting solar radiation energy into heat energy to provide a heat source and heating seawater or water to be purified by using the heat source to generate steam; wherein the heat collection evaporator comprises a main body material and a fixator used for fixing the main body material, the main body material is a main body supporting framework with polyurethane (PU) sponge as a main body, and the supporting framework is filled with biomass hydrogel/nano carbon materials. The solar evaporator has a high evaporation rate, has a good removal effect on ions and organic dyes in seawater, and solves the bottleneck problem that the efficiency is reduced due to salt crystallization caused by long-term operation of a conventional evaporator. According to the technology, efficient evaporation of water and long-term operation of the evaporator are achieved, the water treatment effect is obvious, and long-term operation can be achieved. In addition, the evaporator is low in manufacturing cost, and cyclic utilization of natural resources is achieved.

The invention discloses a deep treatment method of high-salt organic sewage. The method comprises the following steps: step one, carrying out pretreatment; step two, carrying out electroflocculation and precipitation; step three, carrying out ultraviolet-ozone-ultrasound combined reaction stage; step four, carrying out electrolysis treatment through three dimension electrodes; step five, filteringthrough three-dimensional graphene sponge; and step six, carrying out ultrafiltration-electrodialysis coupled desalinization. The method is free of biological treatment processes and high in processflexibility; compared with the common sewage treatment method, the treatment period is greatly shortened; meanwhile, the method is high in desalinization rate, simple to operate, high in efficiency, free of secondary pollution and low in cost, and is capable of completely removing organic matters, recycling the heavy metals and directly recycling the treated high-salt organic sewage.

The invention relates to a sea water desalination and concentrated sea water concentration integrated system and a treatment method. The sea water desalination and concentrated sea water concentrationintegrated system comprises a multiple-effect evaporation sea water desalination subsystem, a regenerative heat concentration subsystem, a regenerative heat absorbing subsystem and a solution regeneration subsystem. According to the system, environment sea water is adopted as a raw material, more-than-0.15MPa steam or more-than-125DEG C hot water is adopted as a drive heat source, a small amountof electric energy is added, and fresh water with the saline concentration being lower than 0.003 percent and the concentrated sea water with the saline concentration being higher than 12 percent canbe produced, so that the fresh water is high-efficiently produced, meanwhile, a high-quality raw material solution is provided for various chemical substances such as salts, and the system has the advantages of high energy utilization ratio, high fresh water recovery rate, slow deposit corrosion, good economical efficiency and the like.

The invention discloses a coastal heavy solonchak 5N rapid high efficiency desalting method, and belongs to the technical field of mudflat solonchak improvement. The method includes: tillage, soil sunning, soaking, water rotation, and salt discharging, and the five steps are cycled for many times, multiple water rotation tillage is a key of the technical system, and is an important key to achievement of rapid desalting. The advantages of the invention are that watering and drainage are easy to perform in a field, the operation flow is complete and is easy to implement, the electricity safety is high, the desalting efficiency is high, rapid high efficiency desalting of coastal heavy salt fields is facilitated, and a cultivation level of the coastal heavy salt field can be reached; and the coastal heavy solonchak 5N rapid high efficiency desalting method has economic value and social meaning to coastal mudflat soil resource development and utilization, grain production, environment protection, and salt-tolerant plant research.

Disclosed is a crystallization system for butanol spray flash extraction of a NaCl aqueous solution. According to the crystallization system, the extraction liquid, butanol, absorbs heat in form of internal circulation and heats the NaCl aqueous solution to realize crystallization and solid-liquid separation of the NaCl aqueous solution, high-efficiency heat exchange is achieved by direct contactbetween a gas phase and a liquid phase through the spray flash evaporation, the butanol and water can be separated in different phase forms at one time after heat exchange, and extraction is simultaneously completed. According to the crystallization system, after the butanol is sprayed and flashed, the NaCl aqueous solution is thoroughly subjected to high-efficiency liquid-solid separation and water resource reuse in an internal circulation extraction mode. The crystallization system provides important ideas for industrial wastewater treatment and crystallization technology.

Belonging to the seawater desalination field, the invention in particular relates to a preparation method of a polyimide composite membrane for pervaporation treatment of high concentration brine. Thepreparation method includes: filling a PAN base membrane with MWCNTs-OH by a vacuum water pump, and then employing interfacial polymerization to obtain the polyimide composite membrane. The preparedcomposite membrane mainly consists of three layers, the first layer is an ultra-thin polyimide separation layer with separation function, the second layer is a vacuum filtration filled MWCNTs sub-layer, and the third layer is an organic porous base membrane layer playing a support role. The composite membrane is used for pervaporation desalination of high concentration brine, and has good brine retention rate and water flux. Pervaporation is employed for desalination of high concentration brine, thus lowering the operating pressure and alleviating the damage of the desalination process to equipment.

The invention provides a desalting and protein recovering method of salted egg white. The method for performing white comprises the following steps: filtering industrialized salted egg white, performing settling desalting by a flocculating agent, adding water for diluting settled salt, and filtering by a ceramic membrane so as to realize concentration desalting and the protein extraction recovery on the industrial salted egg. Compared with the prior art, the method is high in desalting rate and protein recovery rate, recovered protein has the advantages that the quality is stable, protein nutrients are not destroyed and the like, the whole treatment process is simple in step and easy to popularize and apply, the pollutant emission is reduced, and the method is free of environment and water resource pollution and has a wide application prospect.

The invention relates to a continuous flow three-section biological electrogenesis desalination device for treating acetonitrile-containing refining waste water and an application method thereof, belonging to the field of the refining waste water treatment, and aiming at solving the problem that the resource is wasted in the existing chemical industrial waste water treatment process. The continuous flow three-section biological electrogenesis desalination device comprises an anode chamber, an anode carbon brush, an anion exchange membrane, a desalination chamber, a cation exchange membrane, a cathode carbon brush, a cathode chamber, a reference electrode, an aeration device, a facultative chamber, a resistor and a water pump. The application method comprises the following steps: generating an anaerobic electrogenesis biological membrane, an aerobic electrogenesis biological membrane and facultative anaerobic active sludge by virtue of culturing and acclimatization; and facilitating the flow of the water to be treated in various treatment chambers in a gravity flow manner, thereby obtaining stable electric energy output. A continuous running way is adopted to treat the waste water so as to degrade the organic matters and efficiently remove the salt, so that the treatment to toxic and harmful substances is realized, the stable electric energy output can be obtained, no additional energy input or high penetration pressure is needed in the continuous flow three-section biological electrogenesis running process, and the application prospect is good.

The invention provides an airtight air charging device for desalting of relics obtained from water. The airtight air charging device comprises an airtight water tank, a bubble generation device, a water source, an inert gas source and a detecting device; a water outlet of the airtight water tank and the water source are connected with a water inlet of the bubble generation device through stop valves correspondingly; an outlet of the bubble generation device is connected with an inlet of the airtight water tank; an air inlet of the bubble generation device is connected with the inert gas source; the airtight water tank is connected with the detecting device; a gas exhaust valve is arranged on the airtight water tank; and a blow-down valve and/or a liquid sampling valve are/is further arranged on the airtight water tank. The bubble generation device is applied to protection of the relics obtained from the water, thus damage of chemical desalting to the relics is successfully avoided, and the relic protection effect is achieved; submicron bubbles enter surface-layer micropores of the relics obtained from the water so that deep cleaning and desalting can be conducted; and the submicron bubbles explode in the process of rising in the water to form local negative pressure, cleaning water is pushed to flow around the relics obtained from the, and efficient desalting can be achieved.

The invention discloses a fly ash washing process for multistage reverse pulping of carbon dioxide tempering. The fly ash washing process comprises the following steps that 1, fly ash and water are mixed according to the solid-to-liquid ratio of 1: (3-5) to prepare slurry, and meanwhile, carbon dioxide gas is introduced into the slurry to adjust the pH value to be 6-8; 2, suction filtration is conducted on the slurry to obtain high-concentration water washing liquid and solid residues; 3, the solid residues obtained in the previous step are mixed with water according to the solid-to-liquid ratio of 1: (3-5) to prepare slurry; 4, suction filtration is conducted on the slurry prepared in the step 3 to obtain high-concentration water washing liquid and solid residues; 5, the third step and the fourth step are sequentially repeated once, and high-concentration washing liquid and solid residues are obtained; 6, the solid residues obtained in the step 5 are mixed with water according to the solid-to-liquid ratio of 1: (5-8) to prepare slurry; and 7, the slurry prepared in the step 6 is subjected to suction filtration, low-concentration water washing liquid and solid residues are obtained, the low-concentration water washing liquid is concentrated through a DTRO membrane, concentrated water and fresh water are obtained, the concentrated water is reused in the step 1 for preparing the slurry, and the fresh water is reused in the step 6 for preparing the slurry.

The invention discloses an eye repair composition as well as a preparation method and application thereof. The eye repair composition is prepared from the following components in parts by weight: 0.001 to 0.02 part of acetyl tetrapeptide-5, 1 to 6 parts of a whitening plant extract composition and 1 to 6 parts of a mushroom mycelium extract. The prepared eye repair composition is matched with the peptides, the plant extract and the mushroom mycelium extract, and is easily absorbed by skin, the components can achieve synergistic interaction on the premise of fully playing respective roles, and the technical effects of quickly and efficiently fading dark eye circles, relieving eye edema, reducing eye bags and improving the elasticity of the skin around the eyes are achieved. The eye repair composition prepared by the invention is mild, non-irritant, safe and free of side effects, and the preparation method is simple and convenient.