59 results about "Semipermeable membrane" patented technology

The invention belongs to the technical field of semipermeable membrane preparation, and particularly relates to a preparation method of a reverse osmosis membrane. The preparation method comprises the following steps: (1) cleaning the supporting layer for later use; blending diamine, a performance additive and water to obtain a water phase for later use; the preparation method comprises the following steps: blending aromatic acyl chloride, a cosolvent and an organic solvent to obtain an oil phase A for later use, and blending a dynamic crosslinking monomer and the organic solvent to obtain an oil phase B for later use; (2) placing a supporting layer at the bottom of a container, uniformly mixing a water phase and a catalyst, and adding the mixture into the container; and adding the oil phase A into a container to carry out primary condensation reaction, adding the oil phase B to carry out secondary condensation reaction after the reaction is finished, and carrying out post-treatment to obtain the reverse osmosis membrane. According to the invention, a Schiff base-benzene ring bridging structure and a dynamic crosslinking imine bond are introduced through a dynamic crosslinking monomer; and dodecyl ethyoxyl sulphobetaine is matched, so that the chlorine resistance and pollution resistance of the reverse osmosis membrane are improved, and meanwhile, the reverse osmosis membrane has good salt rejection rate and water flux.

The invention provides a core-shell microsphere for feed detoxification and a preparation method and application thereof.The core-shell microsphere comprises a sclerotium layer, a magnetic shell layer and a catalytic layer from inside to outside, and the sclerotium layer is composed of bacillus licheniformis and lactobacillus rhamnosus composite flora and a chitosan-sodium tripolyphosphate semipermeable membrane wrapping thalli; the magnetic shell layer is a Fe3O4 nano-particle coating, and the catalytic layer is a porous Mn-Ce-O shell. The microspheres have the double functions of biodegradation and chemical catalysis, the internal flora can degrade various toxins, the external catalytic layer efficiently decomposes stubborn toxins, the magnetic layer realizes rapid magnetic separation and recovery, and the microspheres are suitable for removing mycotoxins from feed raw materials such as corn and soybean meal.

This invention belongs to the field of membrane cleaning technology and discloses a semi-permeable membrane cleaning device and its process. The device includes a first cleaning unit, which includes a cleaning water tank and a cleaning water pump. The cleaning water tank is connected to a cleaning pipe, and the cleaning water pump is connected in series on the cleaning pipe. The free end of the cleaning pipe is used to connect to the fluid inlet of the finished semi-permeable membrane. The first cleaning unit also includes a reagent tank and a reagent pump. The reagent tank is connected to a reagent pipe and a return pipe. The reagent pump is connected in series on the reagent pipe. The free end of the reagent pipe is used to connect to the fluid inlet of the finished semi-permeable membrane, and the free end of the return pipe is used to connect to the fluid outlet of the finished semi-permeable membrane. In this solution, the semi-permeable membrane is first cleaned of contaminants by circulating alcohol in the reagent tank, and then the semi-permeable membrane is rinsed and replaced with water. This invention solves the problem that pure water flushing is insufficient for removing organic pollutants and avoids the problem that acid and alkali washing can easily damage the membrane material.

The invention relates to a preparation method and application of novel rhizoma bletillae glucomannan. The preparation method of the rhizoma bletillae glucomannan comprises the following steps: 1, drying, crushing and sieving rhizomes of a raw material rhizoma bletillae; 2, putting the crushed and sieved rhizoma bletillae into ethanol for degreasing; 3, obtaining crude polysaccharide through a distilled water ice bath ultrasonic extraction technology and an ethanol precipitation technology; 4, separating and purifying through a DEAE-52 cellulose column and a G-150 gel column to obtain the high-purity rhizoma bletillae homogeneous polysaccharide BsPsIII1-1, namely the rhizoma bletillae glucomannan; 5, carrying out semipermeable membrane dialysis on the BsPsIII1-1 to remove salt, and carrying out freeze drying; and 6, carrying out chemical analysis on the obtained BsPsIII1-1. According to the preparation method and the application of the novel rhizoma bletillae glucomannan, animal experiments show that BsPsIII1-1 can significantly improve CCl4 induced mouse liver tissue injury, reduce serum ALT and AST levels, effectively relieve oxidative stress by reducing MDA content and increasing GSH level, and significantly inhibit hepatic fibrosis by down-regulating expression of alpha smooth muscle actin (alpha-SMA) and collagen I (COL-1).

Described herein are methods of recovering lithium from dilute lithium sources. The methods include extracting lithium from an extraction feed using direct lithium extraction in an extraction stage to yield a lithium intermediate, performing one or more concentration operations, each concentration operation concentrating an input stream to yield an output feed, wherein the input stream is obtained from the lithium intermediate and / or the extraction feed is obtained from the output feed. At least one of the concentration operations includes a membrane separation operation having a plurality of reactors in series each having a semi-permeable membrane, such as a counter-flow reverse osmosis operation. Methods may also include generating a low TDS stream as a permeate from any of the one or more concentration operations, wherein the low TDS stream is recycled or used as fresh water.

The invention discloses a dust and poison synergistic efficient treatment purifier and a use method thereof. The dust and poison synergistic efficient treatment purifier comprises an axial flow fan, a gravity settling chamber, a wet metal-based filter screen dust removal device, a novel dust suppressant, a sewage treatment device, a novel semi-permeable membrane, a dual-purpose suction blowing pump, a dust suppressant adding system, a demister, a sludge pressing and conveying device and an automatic console. The axial flow fan, the gravity settling chamber, the wet metal-based filter screen dust removal device and the demister are connected in sequence; the sewage treatment device is mounted at the lower part of the wet metal-based filter screen dust removal device; the sludge pressing and conveying device, the sewage tank, the dual-purpose suction and blowing pump and the dust suppressant adding system are connected in sequence; a dust suppressant is added into the wet-type metal-based filter screen dust removal device through the dust suppressant adding device. According to the invention, various poisonous and harmful gases and dust generated under the mine can be effectively removed, underground pollution is reduced, and the body health of underground operators is protected.

The application discloses a fermentation preparation method of Lactobacillus hilakii with high GABA yield, and the method comprises the following steps: two-stage fermentation is carried out by using Lactobacillus hilakii, acid stress and intermittent substrate feeding are used to induce and maintain high activity of GAD enzyme in the GABA synthesis stage; when GABA accumulates to a certain concentration, a semi-permeable membrane filtration system connected with a fermentation tank is started, the product is removed on line, and the circulating bacteria are intercepted, so that the product inhibition is released, and the substrate concentration is controlled; the permeate is collected, and high-purity food-grade gamma-aminobutyric acid is obtained through the steps of ultrafiltration, decolorization, ion purification, concentration, crystallization and drying. The application innovatively couples fermentation with on-line membrane separation, breaks through the bottleneck of the traditional process, realizes super-high yield (>360 g / L) and super-high efficiency production of GABA accumulation, significantly shortens the production cycle, reduces the cost, and the obtained product meets the new resource food standard.

The utility model belongs to the technical field of waste treatment, and discloses a demisting device for an absorption tower, the demisting device comprises a demisting assembly I and a demisting assembly II, the demisting assembly I is coaxially mounted in an air inducing pipeline, a backflow cavity I is positioned between the side wall of a reaction cavity and the inner side wall of the absorption tower, the top end of the backflow cavity I is open, and the air inducing pipeline is communicated with the backflow cavity I; a second backflow cavity is formed between the outer side wall of the air inducing pipeline and the outer cavity wall of the top end of the reaction cavity, the second backflow cavity is communicated with the air inducing pipeline, a hydrophilic semi-permeable membrane is arranged at the communication position, and the side end of the second backflow cavity is communicated with the first backflow cavity; the bottom of the exhaust cavity communicates with an air inlet pipeline, and the lower end of the air inlet pipeline communicates with the air inducing pipeline and the first backflow cavity. The second demisting assembly is installed in the air inlet pipeline, and an exhaust port communicating with the outside is formed in the top of the exhaust cavity. According to the demisting device, the flowing path of liquid is changed, the situation that the liquid and gas are repeatedly mixed to generate mist again can be reduced, secondary demisting is conducted through the second demisting assembly, and the demisting effect is improved.

The invention relates to a device and a method for eluting, purifying and recovering oversized DNA (deoxyribonucleic acid) based on pulsed field gel electrophoresis, which are used for efficiently recovering complete DNA molecules from hundred kb level to Mb level. The device comprises an electrophoresis protection chamber with a polygonal container structure and a sample recovery chamber, the side edge of the protection chamber is provided with a semi-permeable membrane for current to pass through, and the recovery chamber is detachably placed in the center and comprises the semi-permeable membrane; the detachable and replaceable magnesium sheet is arranged in the protection chamber and is used for ionizing magnesium ions to promote DNA (Deoxyribose Nucleic Acid) compression; the method comprises the following steps: preparing a biological sample into an agarose gel block, cracking and cleaning the agarose gel block, placing the agarose gel block in a device, and adding a recovery protection solution containing PEG; under the condition of pulsed field gel electrophoresis, DNA migrates out of a gel block and is combined with magnesium ions to be compressed into spheres, and the spheres are collected in a recovery chamber after charges are neutralized. Compared with the prior art, the method provided by the invention overcomes the defects of low product purity and tedious steps of a traditional recovery method, realizes high-purity and high-efficiency integrated recovery, and is suitable for genomics research and biotechnology application.

The invention relates to the technical field of agricultural waste high-value utilization, in particular to a microalgae and methanotrophic bacteria isolated culture device.The microalgae and methanotrophic bacteria isolated culture device comprises a first culture chamber, a second culture chamber, a semi-permeable membrane and a culture medium conveying mechanism, the first culture chamber is used for culturing microalgae, and the second culture chamber is used for culturing methanotrophic bacteria; the first culture chamber is provided with a first discharge hole; the second culture chamber and the first culture chamber form a nested structure, the second culture chamber is used for culturing methane nutrition bacteria, and the second culture chamber is provided with a second discharge port; the semi-permeable membrane is arranged between the first culture chamber and the second culture chamber and is used for separating the microalgae from the methanotrophic bacteria and allowing gas and liquid to circulate; the culture medium conveying mechanism is used for introducing biogas slurry and biogas into the first culture chamber and the second culture chamber, and the microalgae and methane nutrient bacterium separation culture device provided by the embodiment of the invention can realize effective exchange and cyclic utilization of substances while ensuring that two microorganisms obtain respective suitable growth environments.

A system and method for the removal of poly- and / or perfluoroalkyl fluorinated materials contaminants from an aqueous mass uses a system which includes:a) a first chamber for holding the aqueous mass containing a detectable amount of poly- and / or perfluoroalkyl fluorinated materials;b) an anode and a cathode in electronic connection with the aqueous mass in the first chamber; andc) an anionic semipermeable membrane or porous structure between the aqueous mass and the anode.The anionic semipermeable membrane comprises at least 0.0001% by total weight of the anionic semipermeable membrane of a cationic compound adhered to the anionic semipermeable membrane.

The utility model discloses efficient water purification equipment, which belongs to the field of water purification equipment and is characterized in that the upper end and the lower end of an ultraviolet disinfection and sterilization tank are connected with detachable covers, the inner ends of the detachable covers are connected with ultraviolet lamps, a dosing pump is additionally arranged on the side wall of the ultraviolet disinfection and sterilization tank, and a disinfectant is introduced into the ultraviolet disinfection and sterilization tank through the dosing pump; the two-way sterilization and disinfection mechanism improves the sterilization and disinfection efficiency. Impurities and harmful substances in water are effectively removed through a multi-layer filtering system of reverse osmosis and a filtering tank, the reverse osmosis technology only allows water molecules to pass through and intercepts the impurities through a semi-permeable membrane, and the filtering tank removes suspended solids and particles through filtering materials with different particle sizes, so that the water quality is ensured to be pure. The equipment is also provided with double disinfection functions of ultraviolet disinfection and a dosing pump, ultraviolet rays destroy DNA of bacteria and viruses, and the dosing pump accurately adds a disinfectant, such as chlorine or ozone, to ensure that the bacteria and viruses are thoroughly killed. The two disinfection modes are combined, so that the safety and sanitation standard of water quality is improved, and a healthy and safe water environment is provided for a user.

The utility model relates to the technical field of road construction, in particular to an anti-freezing and anti-thawing device for a roadbed. Comprising a road surface layer, a base layer arranged below the road surface layer and drainage ditches arranged on the two sides of the road surface layer, a salt-containing layer is arranged between the base layer and the road surface layer, a semi-permeable membrane layer is arranged between the salt-containing layer and the road surface layer, a waterproof layer is arranged between the salt-containing layer and the base layer, and a liquid storage tank is arranged on the side face of the salt-containing layer. And the liquid storage tank is connected with the drainage ditch through a channel with a valve. The salt-containing layer in the anti-freezing and anti-thawing device can absorb residual moisture in the roadbed, the moisture content of the roadbed is reduced, the anti-freezing and anti-thawing effect is improved, and meanwhile the high anti-freezing and anti-thawing effect can be kept by adding a salt solution; the salt-containing layer is in a closed state, so that the salt cannot diffuse to the outside, and the environment-friendly effect is achieved.

The application discloses a fermentation preparation method of Lactobacillus hilakii with high GABA yield, and the method comprises the following steps: two-stage fermentation is carried out by using Lactobacillus hilakii, acid stress and intermittent substrate feeding are used to induce and maintain high activity of GAD enzyme in the GABA synthesis stage; when GABA accumulates to a certain concentration, a semi-permeable membrane filtration system connected with a fermentation tank is started, the product is removed on line, and the circulating bacteria are intercepted, so that the product inhibition is released, and the substrate concentration is controlled; the permeate is collected, and high-purity food-grade gamma-aminobutyric acid is obtained through the steps of ultrafiltration, decolorization, ion purification, concentration, crystallization and drying. The application innovatively couples fermentation with on-line membrane separation, breaks through the bottleneck of the traditional process, realizes super-high yield (>360 g / L) and super-high efficiency production of GABA accumulation, significantly shortens the production cycle, reduces the cost, and the obtained product meets the new resource food standard.

The application provides a gold-silver bimetallic nanocluster and a preparation method and application thereof, and the preparation method comprises the following steps: performing a co-reduction synthesis reaction on chloroauric acid, silver nitrate and sodium borohydride, coating with mercaptosuccinic acid, forming a spherical nanocluster, performing semi-permeable membrane filtration, and obtaining the gold-silver bimetallic nanocluster, wherein the gold-silver atomic ratio in the gold-silver bimetallic nanocluster is 7:1. The gold-silver bimetallic nanocluster prepared by the preparation method has a stable chemical structure, excellent charge stability and high efficient oxygen free radical scavenging capacity, can weaken oxidative stress damage in a cerebral ischemia-reperfusion injury process, provides protection effect for neurons, and has good biological safety.

This application provides a nano-silicone emulsion, its preparation method, and its application. The nano-silicone emulsion provided in this application comprises: 5-15 parts by weight of polyol; 1-10 parts by weight of nano-SiO2; 1-10 parts by weight of silane coupling agent; 5-20 parts by weight of silicate; and 100 parts by weight of water. Using polyol, silane coupling agent, nano-SiO2, silicate, and water as raw materials, this application obtains the nano-silicone emulsion through physical blending and chemical grafting modification. It can effectively inhibit bentonite hydration and dispersion, seal formation micro-fractures, and simultaneously form a strongly adsorbed hydrophobic semi-permeable membrane on the wellbore, achieving both physical sealing and chemical wellbore strengthening. For formations with well-developed bedding or fractures, the nano-silicone emulsion provided in this application can enhance the drilling fluid's ability to inhibit collapse and seal wellbore, reduce hydration stress, decrease the interaction between water-based filtrate and formation rocks, and improve mud cake quality, thereby achieving wellbore strengthening.

The invention provides a microalgae culture method and application thereof, in the microalgae culture method, a nitrogen source comprises industrial ammonium sulfate; the nitrogen source is continuously added into the culture medium at a fixed rate; alkali liquor wrapped by a semipermeable membrane is arranged in the culture medium. According to the method provided by the invention, industrial ammonium sulfate is adopted as a nitrogen source, so that the culture cost is remarkably reduced, and the problems of culture medium acidification and excessive heavy metal caused by one-time feeding of ammonium sulfate are relieved while sufficient nitrogen source is ensured by adopting a specific adding mode; the semi-permeable membrane coated alkali liquor dynamically responds to H < + > release caused by microalgae ammonium sulfate assimilation, so that the process steps are simplified, the process automation level is improved, the yield of microalgae carbon sequestration biomass is improved by 30% compared with sodium nitrate culture, the nutritive salt cost is reduced by 70%, and the quality of algae powder, including protein content, heavy metal components and the like, meets the standard; the operation cost of the microalgae carbon sequestration industry is greatly reduced, and the development of the microalgae carbon sequestration industry is promoted.

This invention relates to the field of fruit preservation technology and discloses a method for preserving mangoes containing chitosan, a eutectic solvent, and EGC. The method includes the following steps: adding chitosan to an acetic acid solution and heating and stirring in a water bath to obtain a chitosan film solution; pre-dispersing and wetting epigallocatechin in a eutectic solvent, then adding it to the aforementioned chitosan film solution and stirring at room temperature to obtain a modified chitosan composite film solution; selecting undamaged mangoes, washing and air-drying their surface moisture, immersing them in the modified chitosan composite film solution to evenly coat the surface with the film solution, removing them and air-drying them naturally, repeating the aforementioned immersion and air-drying process, and finally storing the dried mangoes in an indoor environment for preservation. This invention utilizes a eutectic solvent to solve the problem of easy aggregation of polyphenolic active substances, forming a uniform and continuous semi-permeable membrane on the mango peel, limiting moisture loss, achieving slow release of antioxidant components, and significantly extending the mango's shelf life.

The invention relates to a nicotine osmotic pump tablet for oral cavity and a preparation method thereof. The nicotine osmotic pump tablet for the oral cavity comprises a tablet core, the tablet core comprises a medicine layer and a boosting layer, the medicine layer comprises nicotine and a hydrophilic polymer, and the boosting layer comprises an osmotic pressure accelerant, an insoluble expanding agent and a hydrophilic polymer; the semipermeable membrane covers the tablet core, the weight of the semipermeable membrane accounts for less than 10% of the weight of the tablet core, the semipermeable membrane comprises a base material and a pore-foaming agent, and the weight of the pore-foaming agent accounts for 10%-20% of the weight of the semipermeable membrane; and the release hole can release the nicotine after the semipermeable membrane permeates into the liquid. The nicotine osmotic pump tablet for the oral cavity can adapt to the oral cavity environment, meets the core requirement of applying nicotine to the oral cavity, has no rupture condition in the nicotine dissolution process, is better in mechanical property, and can be accurately, rapidly and completely released in the oral cavity environment in a short time in a staged manner.

The invention discloses a method for improving the yield and extraction efficiency of astaxanthin in haematococcus pluvialis, which comprises the following steps: culturing haematococcus pluvialis cells to reach a plateau phase, dialyzing haematococcus pluvialis liquid by using a semi-permeable membrane, and then performing light induction to promote the formation of red thin-wall motile cells, thereby improving the yield and extraction efficiency of astaxanthin. According to the method disclosed by the invention, the proportion of the haematococcus pluvialis red parenchyma free cells can be remarkably increased, the astaxanthin yield and the astaxanthin extraction efficiency are improved, the operation is simple, and the comprehensive economic benefit of large-scale culture of haematococcus pluvialis is favorably improved.

The invention discloses a probiotic and propionibacterium acnes co-culture system and application thereof. The semi-permeable membrane is arranged between the upper cavity and the lower cavity; the aperture of the semi-permeable membrane is 0.4 mu m; the upper cavity and the lower cavity comprise a liquid culture medium; the probiotics are lactobacillus plantarum and / or streptococcus thermophilus, the upper cavity is inoculated with the lactobacillus plantarum and / or streptococcus thermophilus, and the lower cavity is inoculated with propionibacterium acnes. Through culture medium, anaerobic conditions and strain proportion gradient design, stable co-culture of the three bacteria is realized, and a systematic function evaluation platform is constructed and used for probiotic screening, acne skin micro-ecological mechanism research and cosmetic functional raw material evaluation.

Described herein are methods of recovering lithium from dilute lithium sources. The methods include extracting lithium from an extraction feed using direct lithium extraction in an extraction stage to yield a lithium intermediate, performing one or more concentration operations, each concentration operation concentrating an input stream to yield an output feed, wherein the input stream is obtained from the lithium intermediate and / or the extraction feed is obtained from the output feed. At least one of the concentration operations includes a membrane separation operation having a plurality of reactors in series each having a semi-permeable membrane, such as a counter-flow reverse osmosis operation. Methods may also include generating a low TDS stream as a permeate from any of the one or more concentration operations, wherein the low TDS stream is recycled or used as fresh water.

The present application relates to stress-dry-wet-freeze coupling effect of unsaturated soil testing device, including pressure chamber, the bottom is equipped with in pressure chamber, the bottom is equipped with vertical loading mechanism above to realize to the sample load, still include for placing in the sample cap of sample top surface, the sample cap and the bottom are used for the surface for the experiment is equipped with liquid tank to cover with semi-permeable membrane, the liquid tank of sample cap and the bottom is connected in dry-wet circulation system to realize the dry-wet circulation of sample, the internal space of pressure chamber is connected in freeze-thaw circulation system to realize the freeze-thaw circulation of sample, the present application realizes the test under stress-dry-wet-freeze coupling effect.

Described herein are methods of recovering lithium from dilute lithium sources. The methods include extracting lithium from an extraction feed using direct lithium extraction in an extraction stage to yield a lithium intermediate, performing one or more concentration operations, each concentration operation concentrating an input stream to yield an output feed, wherein the input stream is obtained from the lithium intermediate and / or the extraction feed is obtained from the output feed. At least one of the concentration operations includes a membrane separation operation having a plurality of reactors in series each having a semi-permeable membrane, such as a counter-flow reverse osmosis operation. Methods may also include generating a low TDS stream as a permeate from any of the one or more concentration operations, wherein the low TDS stream is recycled or used as fresh water.

The application belongs to the technical field of semi-permeable membrane preparation, and particularly relates to a preparation method of a reverse osmosis membrane. The preparation method comprises the following steps: (1) cleaning a support layer for standby; blending a binary amine, a modified additive and water to obtain an aqueous phase for standby; blending an aromatic acyl chloride, a co-solvent and an organic solvent to obtain an oil phase A for standby, and blending a dynamic crosslinking monomer and an organic solvent to obtain an oil phase B for standby; (2) placing the support layer at the bottom of a container, mixing the aqueous phase and a catalyst uniformly, and then adding them into the container; adding the oil phase A into the container to perform a first condensation reaction, adding the oil phase B to perform a second condensation reaction after the reaction is completed, and obtaining the reverse osmosis membrane through post-processing. The application introduces a Schiff base-phenyl ring bridging structure and a dynamic crosslinking bond imine bond through a dynamic crosslinking monomer, and cooperates with dodecyl ethoxy sulfobetaine, so that the reverse osmosis membrane has good desalination rate and water flux while improving the chlorine resistance and pollution resistance of the reverse osmosis membrane.

This invention discloses a method for preparing hard carbon anode materials using cotton stalks, comprising the following steps: (1) crushing the cotton stalks, mixing them with alkali, and then carbonizing them to obtain pyrolytic carbon; (2) crushing the pyrolytic carbon, compacting it, and wrapping it with a semi-permeable membrane to obtain a carbon rod, placing the carbon rod in an acidic solution containing phosphorus and sulfur, and electrolyzing it to obtain a doped carbon rod; (3) separating the semi-permeable membrane from the surface of the doped carbon rod, crushing and sieving the carbon material inside the doped carbon rod, washing and drying it, and then calcining it to obtain a hard carbon anode material. This invention uses a method of co-calcining biomass and alkaline substances, then uses the compacted pyrolytic carbon as an electrode immersed in an acidic sodium phosphorus and sulfur salt solution, and applies a directional electric field to dope it to improve the material performance. Finally, after calcination, a hard carbon anode material with high initial coulombic efficiency, high capacity, and good cycle performance is prepared.

The invention discloses a large volume parenteral production sterile area drainage floor drain which comprises a shell, a mounting ring is fixedly mounted on the outer surface of the shell, a first filter screen is movably mounted at the top of the shell, a second filter screen is slidably mounted on the inner wall of the shell, and a sleeve is fixedly mounted at the bottom of the second filter screen. A one-way semi-permeable membrane is rotatably mounted on the inner surface of the sleeve, a water retaining block is fixedly mounted on the inner wall of the shell, and a U-shaped water pipe is fixedly mounted at the top of the shell; during drainage, sewage flaps the one-way semi-permeable membrane, the one-way semi-permeable membrane is promoted to rotate, the drainage amount of the floor drain is increased, the situation that the sewage is gathered and cannot be rapidly drained is avoided, drainage is not affected even if the one-way semi-permeable membrane does not rotate when the drainage amount is small, meanwhile, the rotating difficulty of the one-way semi-permeable membrane can be increased through cooperation with the four balancing weights, and the drainage efficiency is improved. The insect prevention function of the floor drain is further increased, and meanwhile, due to the characteristics of the one-way semi-permeable membrane, the effect of preventing odor from diffusing to the top of the shell can be achieved.

Described herein are methods of recovering lithium from dilute lithium sources. The methods include extracting lithium from an extraction feed using direct lithium extraction in an extraction stage to yield a lithium intermediate, performing one or more concentration operations, each concentration operation concentrating an input stream to yield an output feed, wherein the input stream is obtained from the lithium intermediate and / or the extraction feed is obtained from the output feed. At least one of the concentration operations includes a membrane separation operation having a plurality of reactors in series each having a semi-permeable membrane, such as a counter-flow reverse osmosis operation. Methods may also include generating a low TDS stream as a permeate from any of the one or more concentration operations, wherein the low TDS stream is recycled or used as fresh water.

A mass production system for deep sea water desalination livelihood water comprises a sea water storage pool (3), at least two high-pressure gravity sedimentation pools (4), a plurality of first salt water separators (5A), a fresh water storage pool (6) and a brine storage pool (7), the high-pressure gravity sedimentation pools (4) are 30 meters high, and a semi-permeable membrane isolation plate (46) is arranged at the position 20 meters high and divides the high-pressure gravity sedimentation pools (4) into an upper pool and a lower pool; the seawater storage pool (3) inputs seawater into the lower pool; the water depth of the lower tank is 10-30 meters, and impurities such as heavy metals and the like are quickly precipitated in a high-pressure gravity environment and cannot climb upwards to penetrate through the pore diameter of a nanoscale semi-permeable membrane isolation plate (46) to enter the upper tank; in the upper tank, a semi-permeable membrane isolation pipe (44) is arranged, clean seawater is input into a first brine separator (5A) after being filtered again by the semi-permeable membrane isolation pipe (44), and after brine is separated by a freezing method, fresh water is sent to a fresh water storage tank (6), and brine is sent to a brine storage tank (7).

This invention relates to a system for concentrating treated water containing amines and a carbon dioxide recovery system. The invention provides an amine-containing water concentration system that can concentrate useful amines reacting with carbon dioxide into an absorbent for reuse, and reduce the amount of wastewater containing amine compounds, as well as a carbon dioxide recovery system equipped with the amine-containing water concentration system. The amine-containing water concentration system according to an embodiment includes: an osmotic pressure generator comprising a treatment container, and a first chamber disposed within the treatment container for supplying treated water, a second chamber for containing a working medium, and a semi-permeable membrane for separating the first and second chambers; and a carbon dioxide introduction mechanism for introducing carbon dioxide into the treated water.