136results about How to "Reduce concentration difference" patented technology

The present invention relates to a sewage treatment process by adopting improved alternative type active sludge method. Said sewage treatment process utilizes the equipments of treatment tank, anaerobic chamber, anoxybiontic chamber, aeration tank and flocculation precipitation tank, etc. and alternatively adopts the process steps of stirring, aeration, concentration, sludge reflus, mixing, flocculation, precipitation and biological dephosphorization, etc. so as to attain the goal of purifying sewage.

The invention discloses an electro-adsorption desalination method for saline wastewater. According to the method, an electro-adsorption device is constructed at first, and the electro-adsorption device is composed of a saline water distribution pool, stable adsorption pool groups, a constant-flow pump, an insulation water inlet tube, an insulation outer frame, a single-sided anode electrode plate, a single-sided cathode electrode plate, a double-sided electrode plate, an insulation channel and a voltage-stabilizing direct-current power supply; saline water longitudinally flows among the electrode plats, and flows to the low-concentration saline water stable adsorption pool group from the high-concentration saline water stable adsorption pool group; electro-adsorption desalination for saline wastewater is carried out after the device is constructed; the electro-adsorption device is operated, the saline water in the saline water distribution pool enters stable adsorption pools through the constant-flow pump, and during an electro-adsorption process, anions and cations in the stable adsorption pools are directionally migrated to a double-sided electrode with opposite electrical properties, one surface of the double-sided electrode adsorbs the anions, and the other surface of the double-sided electrode adsorbs the cations. The method disclosed by the invention reduces the balanced adsorption time, saves electrode materials, and is suitable for electro-adsorption desalination for mixed saline water with a single component or a relatively consistent ion migration speed.

The invention discloses a manufacturing method of an infrared reflecting device. The manufacturing method of the infrared reflecting device comprises the following steps: making a first conductive light transmitting substrate and a second conductive light transmitting substrate at first, and enabling the two conductive light transmitting substrate to opposite to each other; manufacturing parallel orientation layers on the opposite surfaces of the two conductive light transmitting substrates; manufacturing a liquid crystal box by using the two conductive light transmitting substrates; mixing negative liquid crystal, a chiral dopant, liquid crystal monomers and a photoinitiator to obtain a liquid crystal mixture; injecting the liquid crystal mixture in the liquid crystal box; connecting the first conductive light transmitting substrate with a negative pole of a power supply assembly, connecting the second conductive light transmitting substrate with a positive pole of the power supply assembly, capturing impurity positive ions by using the liquid crystal monomers and/or the chiral dopant so that the liquid crystal monomers and/or the chiral dopant have positive charge, and enabling the liquid crystal monomers and/or the chiral dopant to continue moving towards the negative pole direction; and carrying out ultraviolet irradiation to polymerize the liquid crystal monomers so as to form a polymer network, and enabling the densities of the polymer network to be distributed in a gradient manner in the direction perpendicular to the conductive light transmitting substrate to obtain the infrared reflecting device with wide reflection bandwidth. By change of the direction of an electric field, infrared reflection waveband can be adjusted.

The invention discloses a fast charging lithium titanate composite negativeelectrode piece and a lithium ion battery. The lithium titanate composite negative electrode piece comprises a negative electrode current collector, wherein one or both sides of the negative electrode current collector are sequentially provided with a lithium titanate composite layer and a lithium-supplementing layer in a direction away from the negative electrode current collector, and the lithium titanate composite layer comprises lithium titanate, graphene and carbon nanotubes according to a mass ratio of (90 to 94) : (1 to 3): (1 to 3); the lithium-supplementing layer comprises organic lithium. The composite negative electrode piece is in a layered structure, the carbon nanotubes and graphene doped in the lithium titanate composite layer have the characteristics of high conductivity and large current carrying capacity, and the lithium titanate has small particles and small transmission distance, so that the lithium ion transmission time is shortened; the lithium-supplementing layer supplies sufficient lithium ions in the charging and discharging process of the battery, and the transmission rate of the lithium ions in the battery is improved, thereby the cycling performance and the rate performance of the battery are improved, and the fast charging effect is good.

The invention discloses a preparation method of a printed display device, which comprises the steps of depositing a first electrode layer on a substrate; preparing a pixel defining layer on the firstelectrode layer, and forming a Bank structure and pixel pits; ink-jet printing functional layer ink in the pixel pits, ink-jet printing a second solvent on the top surface of the Bank structure, evaporating the second solvent in a sealed container, and performing steam treatment on the functional layer ink by the obtained steam of the second solvent, wherein the functional layer ink comprises a functional layer material and a first solvent; placing the device subjected to steam treatment in a room temperature condition, namely, an air environment or a nitrogen environment, for natural drying;then performing thermal treatment to form a functional layer; depositing an electron transport layer and a second electrode layer on the functional layer, and packaging to obtain the printed display device. The preparation method improves the uniformity of a thin film and the wettability of the functional ink and the pixel defining layer, ensures uniform spreading of the ink so as to play an effect of suppressing the leakage current, is simple and easy to implement and can substantially reduce the manufacturing difficulty and the manufacturing cost.

The invention discloses a pathological specimen processing method and belongs to the field of specimen processing technology. According to the processing method, sampled pathological tissues successively undergo fixation, dehydration, transparency, wax impregnation, embedding, slicing, staining and mounting so as to obtain a pathological specimen. The fixation is to fix the pathological tissues by the use of a fixative for 4-15 h. The fixative is composed of atractylol, ethoxylated acetylenediol, chlorogenic acid, polyvinylpyrrolidone, sodium chloride, ethyl acetate and pure water. The mounting is to carry out mounting on the stained pathological tissues by the use of a mixture of polyacrylamide, polyvinylpyrrolidone and xylene. According to the invention, toxicity of reagents used in the invention is obviously reduced, the fixation effect is good, degradation and transparency degree are easy to control. Then, the tissues are not easy to deform, embrittle or harden, and mounting is complete and staining is remarkable.

The invention relates to a multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor. In the method, a multilevel bipolar membrane electroosmosis method is adopted; the flow direction of salt room liquid and acid room liquid in a bipolar membrane electrodialyzer is changed; and regenerating ammonium sulfate, ammonium chloride or ammonium nitrate in the glutamic acid isoelectric mother liquor comprising the ammonium sulfate, the ammonium chloride or the ammonium nitrate into corresponding sulfuric acid, hydrochloric acid or nitric acid and ammonia (NH3). By the multilevel processing method, concentration difference of inorganic acid radical ions between the acid room and the salt room is totally reduced; the migration rate of the inorganic acid radical is increased by 29 percent; migration energy consumption is reduced by 24 percent; H<+> leakage from the acid room to the salt room is remitted; and concentration of acid liquor recovered by theacid room is increased.

The invention discloses a method for recycling copper from copper nitrate waste water. The technical key points of the invention are that: an iron rod is taken as an insoluble anode; a copper plate is taken as a cathode; and gas stirring is performed on the copper nitrate waste water in an electrolytic bath, so that an electrolytic process can be operated continuously. The purity of the copper recycled by the method is over 99.97 percent, and the recovery rate of the copper is over 99.5 percent. The method has the advantages of short process flow, simple operation, simple equipment, low equipment requirement, low investment and particular suitability for the realization of the recycling of the copper from the copper nitrate waste water in small and medium-sized enterprises.

The invention discloses a method for manufacturing a split gate flash by reducing writing interference. After a control gate, a floating gate, an erasing gate and a word line are formed on a semiconductor substrate, lightly-doped ions are implanted; and the iron implantation comprises a vertically lightly doping step and a pocket ion implantation step, wherein in the pocket ion implantation step, an ion beam is injected into the semiconductor substrate below the word line at an inclined angle. By the method for manufacturing the split gate flash, an ion implantation step which is used for defining threshold value voltage of a flash unit in the prior art is eliminated; after a step of forming the word line, the pocket ion implantation step is added to reduce the doping concentration of a substrate area below a clearance between the word line and the floating gate, so that the difference of the doping concentration of the substrate area below the clearance between the word line and the floating gate and the doping concentration between the concentrations of channels below the floating gate is reduced; therefore, a writing unit which is not ought to have a writing change is prevented from having the writing change, and the writing interference is effectively avoided.

The present invention relates to a preparation method of a catalyst for isobutylene preparation through oxidative dehydrogenation of isobutane, wherein the catalyst comprises a first active component, a second active component, a first auxiliary agent, a second auxiliary agent and a carrier. The preparation method comprises: preparing a catalyst precursor A, and reducing the catalyst precursor A; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor A to a high pressure reaction kettle, adding a solution C, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the waste residue oil hydrotreating catalyst is completely utilized so as to save the cost; and the prepared catalyst has characteristics of high reaction activity, metal consumption reducing, and isobutylene selectivity improving.

The invention discloses a refining method for reducing steel ladle lining erosion. The refining method comprises LF refining and VD refining. In the later stage of LF refining, a magnesium raw material is added in a steel ladle. According to the method, the magnesium fireproof raw material is used for adjusting the content of magnesium in refining slag so that the concentration difference of the magnesium content between magnesium-carbon bricks and the refining slag can be reduced; in the VD furnace vacuum treatment process, erosion of the refining slag to the steel ladle lining magnesium-carbon bricks is restrained; and the purposes of reducing the steel ladle lining erosion and reducing the content of foreign inclusions in molten steel are achieved. By means of the method, erosion of furnace slag to a steel ladle lining in the VD processing process is reduced, the service life of the steel ladle is prolonged, and meanwhile, the molten steel inclusions are reduced.

The invention discloses a magnesium and magnesium alloy casting device and method based on melt speed-controlled drop casting. The casting device comprises an electric furnace body, a sealed cabin and a multi-section temperature control assembly are arranged in the electric furnace body, a flange end cover and an exhaust valve are arranged on the upper portion of the sealed cabin, and a bottom air inlet valve is communicated with an argon supply mechanism and a vacuum mechanism; a top pouring type integrated crucible is arranged in the sealed cabin body, a flow rate adjusting mechanism and a filtering mechanism are nested between a smelting area and an ingot casting area of the top pouring type integrated crucible, and a thermocouple is arranged at the bottom of the outer wall of the top pouring type integrated crucible; the casting method comprises the following steps: placing magnesium and magnesium alloy raw materials in a smelting area; vacuumizing to enable the whole cavity to be filled with argon; the temperature of the multi-section temperature control assembly is set, and magnesium and magnesium alloy raw materials are melted in the full argon protection atmosphere; meanwhile, the flow velocity adjusting mechanism is adjusted to control the flow velocity of the melt; the liquid drops drop into an ingot casting area in a continuous and clean liquid drop form; the device and the process are simple, the effect is excellent, and the formed casting product has high homogeneity, high compactness and high cleanliness at the same time.

The invention provides a method for forming nitride films through an atomic layer deposition method. The method for forming the nitride films comprises the following steps that S1, first source gas isintroduced into a reaction chamber and is adsorbed to the surface of each substrate at different height in the reaction chamber; S2, the first source gas which is not adsorbed is removed; and S3, second source gas is introduced into the reaction chamber and reacts with the first source gas adsorbed on the surface of each substrate so as to form one nitride film on the surface of each substrate, wherein third gas is introduced into the reaction chamber in each step, and the flow rate of the third gas in the step S1 and the step S3 is greater than the flow rate of the third gas in other steps.The method for forming nitride films has the advantages that through a method for increasing the flow rate of the third gas when the first source gas and the second source gas are introduced, the concentration of the reaction source gas at different positions in the reaction chamber is changed, and the uniformity of the nitride films in a furnace is improved.

The invention provides a separating method and device for organic matter-inorganic salt in high-salt high-COD wastewater. A multi-section special electric driving film device is used; through cross flow feeding of a desalting chamber and a concentrating chamber, a concentration difference of each section of the special electric driving film device is reduced, and the efficient separation of organic matters and inorganic salt is realized; desalting liquid and concentrating liquid of each section of the special electric driving film device are directly refluxed to realize film stack self-circulation, the usage amounts of a multi-way valve and a water tank are reduced, and water inlet flows of the desalting chamber and the concentrating chamber of each section of special electric driving filmdevice are controlled to be consistent through the valve, so the demanded quantity of circulating water of a system and the film stack stability are greatly reduced. In addition, the device is capable of performing crystallization processing on the concentrating liquid obtained by the first section of special electric driving film device, acquiring the high-purity inorganic salt, and performing follow-up deep processing on the desalting liquid obtained by the last section of special electric driving film device; the up-to-standard discharge is realized, and the device has better social and economic benefits.

The present invention relates to a preparation method of a catalyst for synthetic gas preparation through reforming of methane and carbon dioxide, wherein the catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor A, and reducing the catalyst precursor A; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor A to a high pressure reaction kettle, adding a solution C, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the waste residue oil hydrotreating catalyst is completely utilized so as to save the cost; and the prepared catalyst has characteristics of high reaction activity, metal consumption reducing, and product selectivity improving.

The invention relates to a high-bandwidth multi-mode fiber which comprises a core layer and a wrapping layer, and is characterized in that the refractive index profile of the core layer is of a parabola shape, the distribution index alpha is 2.0-2.3, the radius R1 of the core layer is 23-37 [mu]m, the maximal relative refractive index difference [delta]1max of a core layer center is 0.9%-1.2%, thecore layer is a silica glass layer wherein Ge, P and F are jointly doped, the contribution [delta]P0 of P of the core layer center is 0.01% to 0.30%, the contribution [delta]P1 of P at the junction of the core layer and the inner wrapping layer is 0.01%-0.30%, the content of P in the core layer center is consistent with that of a core layer edge, the core layer F is used as the negative dopant, the doping amount of F is gradually increased in the direction from the core layer center to the core layer edge, the contribution [delta]F0 of F of the core layer center is 0.0% to -0.1%, and the contribution amount [delta]F1 of F of the core layer edge is -0.40% to -0.20%. The material composition and the core cladding structure of the invention are rationally designed, the chromatic dispersion is reduced, the bandwidth performance is improved, and the fiber attenuation is reduced.

The invention provides a high-temperature storage method of a lithium manganate battery. A positive electrode active material of the lithium manganate battery comprises lithium manganate accounting for more than 50% of the total mass of the active material. The high-temperature storage method comprises: heating the assembled lithium manganate battery to 40 to 50 DEG C; injecting a first electrolyte at normal temperature; adjusting the temperature of the battery to be below 10 DEG C; and carrying out constant-current charging to a first predetermined voltage, adjusting the temperature of the battery to 40-50 DEG C, carrying out constant-voltage charging at the first predetermined voltage, injecting a second electrolyte at normal temperature, carrying out constant-current charging and discharging circulation between a charging cut-off voltage and a discharging cut-off voltage for a plurality of times, and storing the battery in an environment with the temperature of 30 DEG C or above. The battery stored by the storage method disclosed by the invention can be stored for more than 100 days in an environment with the temperature of more than 30 DEG C, and the attenuation of the cycle capacity is controlled within 5%.