138results about How to "Reduce salt concentration" patented technology

The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement resides in the use of a lithium salt of the formula: Li2B12FxZ12-x wherein x greater than or equal to 4 and Z represents H, Cl, and Br.

The present invention provides stable pharmaceutical antibody formulations, including lyophilized formulations, comprising an anti-IL-4 / anti-IL-13 bispecific antibody and a buffering system, wherein the pH of the formulation is about pH 7, and wherein the formulation has a low salt concentration in order to reduce the ionic strength of the formulation. The formulations may, optionally, further comprise a non-ionic surfactant, a sugar, and / or a non-ionic stabilizing agent. The formulations can be used in the treatment of various diseases.

The invention discloses a method for improving heavy metal-polluted soil, which comprises the steps of: (1) modifying the heavy metal-polluted soil; (2) adding soil conditioner into soil; and (3) covering the soil, evenly mixing, and balancing for 0-6 months. The method restrains the oxidation of matrix by reactions such as absorption, chelation and complexation, and the like, fixes the heavy metal ion, reduces the biological toxicity of the soil, and reduces the diffusion and the leakage of the heavy metal ion to periphery soil or water. The method has low investment cost, can not break the structure of the soil, and is easily preformed.

The invention relates to a deep treatment process of landfill leachate. The effluent of landfill leachate subjected to biochemical treatment is used as influent. The process adopts a coagulative precipitation tank, an oxidation tank, an anaerobic biological filter and a membrane treatment device and comprises the following steps of: (1) removing partial organic matter through coagulative precipitation to reduce chroma; (2) further removing refractory and non-biochemical organic matter with an oxidizer formed by ozone, and the like and improving the biodegradability of the effluent; (3) removing SS (Suspended Solid), organic matter and nitrate in the leachate through an anaerobic filter; and (4) ensuring that the effluent stability of the whole system through a membrane separation technology reaches the emission standard and canbe recyclable. The process has the advantages of lower operation cost, stable effluent, less quantity of generated concentrated liquid, less salt content in theconcentrated liquid, and the like, and the process of biochemistry and materialization of the pretreatment, which is used before using the membrane method, can prolong the service life of the membrane.

The invention provides a method for digesting a rich titanium product and a method for detecting the rich titanium product. The method comprises the following steps: placing a sample of the rich titanium product in a container; adding nitric acid, hydrochloric acid and hydrofluoric acid into the container; sealing the container; conducting digestion with microwave to obtain a digestion solution. The method comprises the step of adopting an inductively coupled plasma atomic emission spectrometer to detect the digestion solution prepared through the above steps. According to the digesting method and the detecting method, a plurality of key impurities with the content ranging from 15% to 0.001%, which determine the quality of the rich titanium product, can be simultaneously detected. Furthermore, the accuracy, the precision and the working efficiency of detection data are greatly improved.

The invention relates to an in-situ rapid preprocessing method for protein samples. The whole preprocessing process of the protein samples is carried out in a centrifugal ultrafiltration device in situ, the denaturation process, the reduction process, the solvent replacement process, the alkylate process, the enzymolysis process and the impurity removal process of the protein samples are integrated, and enzymolysis of the protein samples is accelerated under assistance of microwaves. The method can remarkably improve the preprocessing flux of the protein samples; meanwhile, the whole preprocessing process of the samples is carried out in situ, and the recovery rate is high. In addition, the centrifugal ultrafiltration device can conveniently and rapidly achieve the purification of the samples and replacement of solvents, and enzymatic hydrolysate does not need an additional purification process and can be directly combined with subsequent efficient liquid chromatogram separation and mass spectrum identification.

The present invention relates generally to the fields of genomics, synthetic biology and genetic engineering. More particularly, the present invention concerns the methods that enable parallel multiplex ligation and amplification on surface for making assemblies of nucleic acids of various biological applications and for analysis of biological samples such as DNA, RNA, and proteins.

The invention provides a high-concentration fluorine chemical wastewater treatment technology which comprises the following sequential treatment on the chemical wastewater: (1) classified collection, oil isolation and settling; (2) microelectrolysis decomposition; (3) Fenton oxidation; (4) neutralization and coagulation; (5) flocculation; (6) precipitation and sludge backflow; (7) re-neutralization; and (8) biochemical treatment. Through separate treatment on the acid-alkaline wastewater, refractory precipitate or complex generated when two kinds of wastewater are mixed can be avoided; before the wastewater enters a microelectrolysis reaction tank, alkaline wastewater is properly used as a pH regulator, and thus the addition of the pH regulator in the whole system is reduced; in the technology, part of the precipitated sludge flows back into a pH neutralizing tank, and thus the fluorine removal effect is improved; by mixing domestic wastewater with the production wastewater after physicochemical treatment, readily biodegradable organic nutrients can be introduced, and the salt concentration in water is further reduced so as to protect the microorganisms; and by adopting the technology, the problems of large investment and high operation cost in chemical wastewater treatment are solved.

The invention provides a method of pickling salty preserved eggs. The salty preserved eggs are formed by pickling salted eggs and preserved eggs through a sectional type design. According to the cooked salty preserved eggs, egg white is yellowish-brown preserved-egg gel and is crystal clear and high in resilience, and the salty preserved eggs have a preserved egg flavor; yolks are floppy, can produce oil and have the salted egg feature; one duck egg has two flavors.

The invention relates to a compound passivator of heavy metal contaminated soil and a preparation method and application of the compound passivator of heavy metal contaminated soil. The compound passivator comprises 8.0 to 10.0% of slaked lime, 25.0 to 30.0% of modified diatomite, 35.0 to 40.0% of modified phosphogypsum and 25 to 30.0% of biomass carbon in percentage by weight. The use amount of the compound passivator varies according to the soil contamination degree, generally within 1.5% to 2.0%. The preparation of the compound passivator is prepared by mixing the slaked lime, the modifieddiatomite, the modified phosphogypsum and biomass carbon proportionally; the compound passivator disclosed by the invention has a good application effect in remediation of cadmium, lead, zinc and copper compound contaminated soil by a synergistic action of multiple different passivation mechanism components, further can improve the vegetable quality and reduce crop absorption of pesticide residues, and is suitable for remediation of the large-area heavy metal contaminated soil, including the remediation of heavy metal contaminated farmland soil near industrial and mining areas and contaminatedsites in heavy metal production enterprises. The compound passivator can passivate various heavy metal elements and has high passivation efficiency.

The invention relates to an ammonium fluoride wastewater treatment technique which comprises the following steps: ammonium fluoride wastewater pretreatment, ultrafiltration treatment, electrodialysis treatment, and nanofiltration treatment until the ammonium fluoride content of the ammonium fluoride solution subjected to nanofiltration treatment is less than 5 mg / L, thereby completing the ammonium fluoride wastewater treatment. The invention has the following advantages: 1. reasonable technique combination: the ultrafiltration technique is adopted, the wastewater is treated by internal circulation between the electrodialysis system and the nanofiltration system according to the concentration of ammonium fluoride, and the electrodialysis technique desalts and concentrates inorganic salts in the wastewater, and has high permeation speed and desalting performance; 2. the investment and operating cost is lowered; and 3. ammonium salts in the wastewater are treated in good time, thereby changing wastes into valuable substances and implementing zero discharge to the outside.

The invention relates to a resource comprehensive utilization method for recovering fluorine from wet-process phosphoric acid. The method comprises the following steps of: absorbing SiF4 and HF gases generated in the wet-process phosphoric acid by using water, and preparing the gases into a hydrofluosilicic acid solution of which the mass percent concentration is 10-35%; mixing one of four solids including solid sodium sulfate, solid potassium sulfate, solid sodium chloride and solid potassium chloride with the hydrofluosilicic acid solution, and reacting for 0.1-2 hours at 30-80 DEG C under stirring to obtain a mixture; centrifugally separating the obtained mixture to obtain a solid and a filtrate; and washing the solid with water, and drying for 1-3 hours at 100-120 DEG C to obtain a sodium fluorosilicate or potassium fluorosilicate crystal. According to the method, a byproduct hydrofluosilicic acid in the wet-process phosphoric acid and sodium (potassium) sulfates or chlorides which are abundant and easily-available are used as raw materials, so that the cost is low, two products including sodium fluorosilicate and potassium fluorosilicate can be produced at the same time by using one set of equipment, and the maximum utilization ratio of the hydrofluosilicic acid can reach over 99%.

The invention discloses a method for cowpea sauce product with low salt. The method adopts temperature-reduction low-salt pickling technology, and utilizes the manner of continuously reducing the temperature for three times, decreasing the usage amount of salt, and fermenting and pickling by latterly introduced lactobacillus, not only can the concentration of salt in pickling liquid be effectively reduced, but also the pickling period can be shortened and the quality and flavor can be improved, and the obtained cowpea is crisp and tender and palatable, low-salt, pure in sauce color, abundant in mouth feeling, and high in nutritional value.

The invention discloses a low-cost iron phosphate ammonia-nitrogen-containing wastewater treatment method, which comprises: adding an appropriate amount of Ca(OH)2 to an iron phosphate mother liquor,adjusting the pH value to 6-8 to form a calcium sulfate precipitate, and filtering the precipitate to obtain a first mixed liquid, wherein the first mixed liquid mainly contains NH4<+>, SO4<2-> and PO4<3->; carrying out first membrane concentration on the first mixed liquid to obtain a second mixed liquid; carrying out MVR evaporation on the second mixed liquid, and separating to obtain an ammonium sulfate crystal and an ammonium phosphate crystal; and washing the crystals, and drying to obtain the ammonium sulfate finished product and the ammonium phosphate finished product. According to thepresent invention, the process of the method is simple, and the used raw material is Ca(OH)2, and Ca(OH)2 can reduce the salt concentration in the system, such that the amount of the water entering the MVR evaporation can be reduced so as to correspondingly reduce the evaporation cost; and Ca(OH)2 is a solid, and cannot increase the amount of the water in the system so as to reduce the treatment capacity of the first membrane concentration system and the treatment cost.

The invention relates to a method for fermenting and generating Ectoine by utilizing microorganisms, which belongs to the microorganism fermentation engineering filed. The method comprises the following steps: fermenting a plurality of strains of Halomonas, which can secrete Ectoine, in a liquid culture medium with glutamic acid mono sodium as a sole carbon nitrogen source and the NaCl concentration being 15 to 120g / L; inducing synthesis and enaling Ectoine to be secreted; and recycling the Ectoine in a fermentation system. The method ensures that the fermentation productivity of the Ectoin reaches 6.4 to 7.9g / L / d, which is 2.1 to 2.4 times of that of the prior art, and products are mostly secreted into the culture medium, so as to simplify the recycling process of the products, and to be favor of realizing continuous culture. Compared with the prior art, the NaCl concentration in the culture medium is reduced by 1 / 2 to 2 / 3, thus being favor of reducing the corrosion of equipment, and reducing the downstream processing cost.

The invention provides a furrow-sowing drip-irrigation mulch-cultivation method of a salinized cotton field in an arid area, including furrowing and ridging, and double-row planting in furrows. The method is characterized in that ridges are big while the furrows are small, a drip irrigation zone laid in the centerline of a furrow bottom is mulched thereon by a plastic film, and bunch planting is performed at both sides of the drip irrigation zone on the plastic film. The plastic film mulching mode includes single-film mulching and double-film mulching, wherein the single-film mulching is to mulch a film in ridge bare furrows or mulch a film evenly in the furrows, and the double-film mulching is to mulch a top film tightly on the top surface of an adjacent ridge after planting based on the single-film mulching so as to form a furrow chamber. Since the evaporation on the ridges is relatively stronger than that in the furrows, salt is allowed to transfer and accumulate above the ridges, and the rhizosphere salinity of the furrows is reduced accordingly. The method realizes a combination of ridging and furrow sowing, plastic film mulching and water-saving drip irrigation, thus water saving, warming and salt reducing effects are achieved, high yield of cotton is facilitated, and increased yield rate ranges from 8.3% to 16.4%. Compared with the conventional salt-alkali improvement measures, the method features more water conservation, lower investment, and easier operation.

The invention discloses a culture medium for promoting an adventive root of a woody plant to root and grow and an application of the culture medium. The culture medium comprises the following components: inorganic salt A, inorganic salt B, an organic compound, 50-150mg / L water-soluble carbon nano tubes, 0.5-1.5mg / L indolebutyric acid, 100mg / L 2-(N-morpholine) ethanesulfonic acid, 30000mg / L cane sugar and 5000mg / L agar. The culture medium provided by the invention is more capable of promoting the growth of the adventive root. The largest difficulty of asexual reproduction of the woody plant lies in the rooting and the growth of the adventive root, the culture medium has the same promotion effect for the rooting of the adventive root of brassaia actinophylla and the rooting and the growth of plants such as honeysuckle, blueberry, small kiriko, swida wilsoniana, zanthoxylum dissitum and the like.

The invention relates to a method for fast enzymolysis of hybrid proteins comprising: providing protein samples to be enzymolysis; obtaining the denatured protein samples after the degeneration treatment of said protein samples; treating said denatured protein samples by means of protease enzymolysis and assistant with ultrasonic, obtaining the protein polypeptide fragments. The invention also provides a method for fast identifying the protein. The method of the invention can quickly and high efficiently implement the protein enzymolysis and identification with easy operation and high accuracy.

The present invention relates generally to the fields of genomics, synthetic biology and genetic engineering. More particularly, the present invention concerns the methods that enable parallel multiplex ligation and amplification on surface for making assemblies of nucleic acids of various biological applications and for analysis of biological samples such as DNA, RNA, and proteins.

The invention relates to the storage of raw material of ginger, in particular to a method for storing raw material of ginger at low temperature, belonging to the technical field of ginger processing. The method comprises the following steps: choosing the raw material of ginger, cleaning, grading, pickling, acidifying, packaging and refrigerating. Aiming to overcome the problems that the conventional ginger is pickled by excess salt and sulphur so that the flavor and the components of the ginger are lost and the nutrients and the active components of the ginger are damaged and browned and havepotential safety hazards, the concentration of the salt is reduced and the sulphur preparation is not used. Therefore, the quality and the preservation rate of the raw material are improved, and the raw material for producing high-quality ginger product is guaranteed. In addition, the use amount of the salt is reduced, and the use amount of water for desalting is reduced, thus the purposes of lowering cost, saving water and reducing emission are achieved. The method has the advantages of operation convenience and reliability and high production efficiency. The damage to the quality of the rawmaterial of the ginger due to the adoption of the ginger salting storing process is reduced to the maximum extent, and the quality of the ginger product is improved significantly.

A process for desalinating water is disclosed. The process comprises the steps of passing a feed stream of saline solution 2′ in a first desalination step through a reverse osmosis membrane desalination plant 3′ comprising at least one reverse osmosis desalination unit 4′ to form a first product water stream 5′ having a reduced salt concentration relative to that of the feed stream of saline solution 2′ and a first byproduct stream 6′ having an increased salt concentration relative to that of the feed stream of saline solution 2′ characterized in that the first byproduct stream 6′ is passed in a second desalination step through a suspension crystallization unit 7 to form a second product water stream 8 having a reduced salt concentration relative to that of the first byproduct stream 6′ and a second byproduct stream 9 having an increased salt concentration relative to that of the first byproduct stream 6′. The invention further relates to an apparatus 1 for carrying out said process. The present invention further relates also to the use of the process or apparatus 1 for the reduction of the volume of the first byproduct stream of a reverse osmosis membrane desalination plant 3′, preferably an in-land desalination plant 3′, or in a device or plant or process for producing desalinated water, for salt production, for co-production of power and desalinated water, or for air conditioning.

The invention discloses a separation and purification method for a monoclonal antibody. The method includes the steps that cell culture supernatant containing the monoclonal antibody is subjected to Protein A affinity chromatography so as to obtain a first elution component; the first elution component is placed for a specified time at the room temperature with a specified pH value kept so as to obtain the first elution component subjected to low-pH-value inactivated virus treatment; the first elution component subjected to low-pH-value inactivated virus treatment is neutralized and then subjected to cation exchange chromatography so as to obtain a second elution component; the second elution component is diluted and then subjected to anion exchange chromatography so as to obtain a through flow; the through flow is filtered with a virus removal filter so as to obtain filter liquor; the filter liquor is subjected to ultrafiltration concentration, filter wash and buffer solution replacement in sequence so as to obtain stoste of the monoclonal antibody. The method is simple and easy to implement, and the endotoxin content and other quality indexes of the obtained product meet the quality standard of monoclonal antibody drugs.

A process for producing soda ash from brine waste, the process including reacting brine waste with carbon dioxide and ammonia to produce soda ash, where in at least a portion of the ammonia is regenerated from the ammonium chloride produced during the reaction, the regeneration ideally be achieved by the use of a weak base anion exchange resin.

The invention discloses an anaerobic organism fluidized bed mixed carrier for treating industrial waste water and application of the anaerobic organism fluidized bed mixed carrier. The anaerobic organism fluidized bed mixed carrier is characterized by consisting of modified active carbon, modified kieselguhr and modified resin, wherein the volume of the modified active carbon is 55%-62% of that of the mixed carrier; the volume of the modified resin is 31%-42% of that of the mixed carrier; the volume of the modified kieselguhr is 3%-7% of that of the mixed carrier. In the application, the total volume of the mixed carrier is 9%-11% of the total volume of the anaerobic organism fluidized bed. By the application of the mixed carrier in the organism fluidized bed, the mass transfer efficiency can be improved, the energy consumption can be reduced, the sludge yield is can be reduced, the HRT(hydraulic retention time) can be shortened, and the impact load endurance of the anaerobic organism fluidized bed is relatively high, so that when industrial waste water is treated by utilizing the mixed carrier anaerobic organism fluidized bed, the chemical oxygen demand removing effect is far higher than the effect of the traditional anaerobic organism treatment method.

The invention discloses a green alga and viable bacterium compound, a method for preparing the same and application of the green alga and viable bacterium compound. The green alga and viable bacteriumcompound comprises, by weight, 40-60 parts of green algae and 10-20 parts of viable bacteria. The green algae are chlorella, and the viable bacteria are photosynthetic bacteria and bacillus polymyxa.The green alga and viable bacterium compound, the method and the application have the advantages that the green alga and viable bacterium compound can be used in the agricultural field; the bacteriaand the algae are complementary with one another, and accordingly the green alga and viable bacterium compound is environmentally friendly; effects of promoting growth of crops, improving the diseaseresistance of the crops, increasing the yield of the crops and improving the quality of the crops can be realized; the green alga and viable bacterium compound can be used as a foliar fertilizer, accordingly, the photosynthetic rates of the crops can be increased by 2-3 times, nitrogen sources and carbon dioxide in air can be sufficiently utilized, energy can be saved, and environments can be protected; effects of remedying soil further can be realized by the green alga and viable bacterium compound, and effects of immobilizing heavy metal, degrading harmful substances such as polycyclic aromatic hydrocarbons, reducing the salt concentration and improving the water retention and fertilizer conservation capacity of the soil can be realized by the green alga and viable bacterium compound.

The invention discloses a halobacillus and a method for industrially producing Ectoin by using the halobacillus. According to the invention, the method comprises the following steps: firstly, separating a bacterial strain with the Ectoin-secretion characteristic from coastal mud of Rizhao, and then carrying out mutation screening to obtain the Halobacillu sp. FL-2423 with high Ectoin yield and stable hereditary characteristics. The preservation number of the bacterial strain is CGMCC No.18783. The above bacterial strain is moderate halophilic bacteria and is subjected to fermentation culture in a culture medium with a NaCl concentration of 50-100g / L, Ectoin is synthesized in cells, and the fermentation yield reaches 10-16g / L.

The invention discloses a technology for normal-temperature salt-free extraction of heparin sodium. The technology comprises the following steps of breaking intestinal mucosa, carrying out enzymolysis by a protease-lipase-nuclease compound enzyme preparation under the conditions of a normal temperature and no salt, then carrying out clear liquid centrifugal collection, adsorbing heparin sodium in the centrifugate by appropriate ion exchange resin, carrying out elution on the filtrate by high-concentration salt, precipitating the heparin sodium in the eluent by alcohol and carrying out drying to obtain a heparin sodium crude product. The technology can save a large amount of heat energy in enzymolysis and adsorption, reduce energy consumption and reduce a production cost. The technology realizes heparin sodium enzymolysis and adsorption under the condition of no salt so that the salinity of the discharged waste water is reduced, a waste water treatment cost is reduced and environmental benefits are improved.

The invention relates to the technical field of thermal power plant energy and resource recycling and energy conversation and environmental protection, in particular to a novel zero discharge treatment technology for high salinity wastewater of a thermal power plant.According to the technology, by mixing desulfurization wastewater, residue water and circulating cooling sewage water, the floor area of a treatment unit is saved, the acid-base input amount in the treatment process is decreased, the salt concentration of the desulfurization wastewater and the residue water is decreased, and therefore the operation load and treatment cost of a subsequent treatment device are reduced; the water can be reused in a segmented mode to increase the overall reuse rate of reused water and reduce the operation cost according to the treatment characteristics of the combined technology by combining the water using requirements of different workshops in the production process of the power plant.By combining a crystallization and microfiltration device, a disk-tube reverse osmosis device and a mechanical steam recompression device, the high salinity wastewater and the circulating cooling sewage water of the power plant can be completely converted into resources, and true zero discharge is finally achieved.