14results about How to "Increased precipitation rate" patented technology

The utility model discloses a non-pure aqueous solution hydrogen production and solid salt co-production system, which belongs to the field of electrochemistry and comprises a non-pure aqueous solution hydrogen production subsystem and a salt crystallization separation subsystem which are connected with each other. A non-pure water solution mass transfer device is arranged in a salt crystallization separation cabin of the salt crystallization separation subsystem, a non-pure water solution inlet and a pure water vapor outlet are formed in the salt crystallization separation cabin, and the non-pure water solution inlet is connected with a first valve; a solid salt outlet is formed in the solid-liquid separator; a second valve is arranged between the salt crystal separation cabin and the solid-liquid separator; the non-pure water solution mass transfer device comprises a non-pure water solution mass transfer unit, and a waterproof breathable layer is attached to the surface of the non-pure water solution mass transfer unit. The device disclosed by the utility model can fundamentally solve the problems of failure of an ion exchange membrane, inactivation of a catalyst, generation of alkaline precipitate and toxic gas and the like caused by complex ion components, and achieves double-effect utilization of energy regeneration and resource utilization of non-pure water solution.

The invention discloses a printed circuit board wastewater comprehensive treatment method, and belongs to the technical field of wastewater treatment.The comprehensive treatment method comprises the steps that nickel-containing wastewater and cyanide-containing wastewater are treated in a combined mode, complex wastewater and silver-containing wastewater are treated in a combined mode, and then the wastewater is mixed with organic wastewater for biochemical treatment. According to the comprehensive treatment method, the process of quality-divided treatment of various types of wastewater is simplified, the overall treatment time is shortened, the acid-base property of water is utilized, the consumption of acid-base agents is reduced, and the cost is reduced. Ultraviolet and ozone bubbling conditions are utilized to perform complex breaking oxidation, cyanide is utilized to oxidize to form carbonate, and precipitation is promoted to remove metal ions; ferric chloride is added for complex breaking treatment under ultraviolet and air aeration conditions, so that the consumption of ferric iron is reduced, silver and copper are efficiently removed, the quality of comprehensively treated effluent reaches the standard, and the treatment process is efficient and rapid.

The invention belongs to the technical field of lithium hydroxide preparation, and particularly relates to a preparation method of lithium hydroxide. The method at least comprises the following steps: providing a lithium source; mixing a lithium source with a fluxing agent to obtain a mixed system; taking the mixed system as an anode raw material; taking an ethanol aqueous solution as a cathode raw material, and based on the mass of the cathode raw material, the mass content of ethanol is x%; determining the value range of x based on the solubility and current density of lithium hydroxide; and then heating to enable the anode raw material to be in a molten state, carrying out electrolytic treatment on the anode raw material and the cathode raw material, and separating out a lithium hydroxide hydrate at the cathode. The lithium source in the molten state is electrolyzed, lithium hydroxide with high purity can be efficiently separated out by controlling the content of ethanol in the cathode raw material, the requirement for the purity of the raw material is low, and the method has the advantages of being simple and convenient in process, low in cost and high in efficiency.

The invention discloses an ionic liquid anolyte and a method for intensifying sulfur separation, a functionalized ionic liquid is used as an absorbent and an electrolyte regulating agent, on one hand, hydrogen sulfide is efficiently absorbed, and on the other hand, the hydrogen sulfide electrolysis process is coupled. Gas absorption is directly carried out in an anode chamber, then absorption liquid is electrolyzed, sulfur is obtained from an anode, and hydrogen is prepared from a cathode. Sulfur generated at the anode can be separated out from the electrolyte, and precipitates are formed at the bottom of the electrolytic tank; meanwhile, as a novel green solvent, the ionic liquid has a wider electrochemical window and conductivity, so that the electrolytic reaction can be effectively promoted, and the hydrogen production rate of the cathode is greatly improved. According to the method, the absorption rate and the electrolytic reaction rate are high, the hydrogen production rate is higher than that of most systems using the electrocatalyst, sulfur can be self-precipitated in the electrolyte, redundant sulfur separation operation is not needed, the electrolyte can still be recycled after sulfur is filtered, and the method is environment-friendly and energy-saving. And efficient absorption of hydrogen sulfide and production of clean energy hydrogen are facilitated.

The invention relates to the technical field of wastewater treatment equipment, in particular to an evaporation system with a refrigerating loop, which comprises an evaporation separator, a crystallizer, a dryer, a refrigerating loop, a conical circular truncated cone, a fixing frame, an electromagnetic telescopic rod, an extension spring and a liquid sealing plate, a high-salinity wastewater concentrated solution which just reaches a saturated state quickly flows downwards into the crystallizer along the surface of the conical circular truncated cone, so that a large amount of crystallized salt is prevented from being crystallized and separated out in the evaporation separator and is immediately mixed with the concentrated solution to be adhered to the inner wall of the evaporation separator, and adverse effects on subsequent high-salinity wastewater treatment are avoided; the high-salinity wastewater is cooled in the crystallizer through the refrigerating loop, so that the technical effect of rapidly and greatly reducing the salt content of the high-salinity wastewater concentrated solution is realized.

The present invention relates to a method for enriching rare earth from rare earth ore leachate, the method comprising the following steps: (1) subjecting the rare earth ore leachate obtained by magnesium salt leaching to microfiltration membrane impurity removal treatment to obtain impurity-removed leachate; (2) uniformly mixing a complexing agent with the impurity-removed leachate obtained in step (1), and then subjecting the mixture to ultrafiltration membrane separation treatment to obtain an intercepted rare earth solution and a permeated magnesium salt solution; (3) mixing a precipitant with the rare earth solution obtained in step (2), and obtaining a rare earth hydroxide precipitate and a precipitate mother liquor after solid-liquid separation; the obtained precipitate mother liquor is combined with the magnesium salt solution obtained in step (2) and reused in the magnesium salt leaching in step (1). The present invention adopts a rare earth purification and enrichment process integrating microfiltration-complexation ultrafiltration-precipitation, which reduces the amount of precipitant used and improves the precipitation rate and rare earth purity. The method is simple and clean, and the cost is low.

The utility model belongs to the technical field of sewage treatment, and particularly relates to glass fiber reinforced plastic sewage filtering equipment not easy to block, which comprises a box body and a filtering assembly, a water inlet pipe and a water outlet pipe are arranged on the box body, and a plurality of partition plates are arranged in the box body at fixed intervals, so that an inner cavity of the box body is divided into a plurality of precipitation cavities; an overflow opening is formed in the upper portion of the partition plate, a filter assembly is arranged on the overflow opening in a tightly attached mode, the filter assembly comprises two symmetrically-arranged filter cartridges, and the filter cartridges are arranged on the two sides of the overflow opening respectively. By arranging the filter cartridge at the overflow port, most impurities can be filtered and prevented from entering the next settling zone, so that the settling rate of the solid impurities is accelerated, and the filtering effect is improved. And the blocking degree of the filter cartridge at the overflow port can be reduced by sequentially filtering through the multi-stage partition plates and the filter cartridge.

The invention provides a preparation method of lithium hydroxide, and belongs to the technical field of preparation of lithium hydroxide. The preparation method at least comprises the following steps: providing lithium chloride crude salt; dissolving the lithium chloride crude salt with ethanol, and then carrying out solid-liquid separation to obtain an ethanol solution of lithium chloride; taking an ethanol solution of lithium chloride as an anode solution; an ethanol aqueous solution is used as a cathode solution, and the mass content of ethanol is x% based on the mass of the cathode solution; determining the value range of x based on the solubility and current density of lithium hydroxide; and the anode solution and the cathode solution are subjected to electrolytic treatment, and a lithium hydroxide hydrate is separated out at the cathode. Ethanol is adopted for impurity removal, a liquid system after impurity removal can be directly used for electrolysis, the separation of lithium hydroxide is promoted by regulating and controlling the ethanol content of a cathode solution, the step of evaporative crystallization of lithium chloride and lithium hydroxide is omitted, and the method has the advantages of simple and convenient process and high production efficiency.

The present invention relates to the technical field of medical sewage treatment, and in particular to a medical sewage sedimentation device that is convenient for cleaning sediments, comprising a water storage cavity, a movable wheel is movably installed at the lower end of the water storage cavity, a shell is fixedly installed at the upper end of the water storage cavity, a feed disinfection mechanism is arranged at the upper end of the shell, an automatic drainage mechanism and a sedimentation auxiliary mechanism for removing pathogenic microorganisms in the medical sewage are arranged inside the shell, and a movable barrier mechanism and a water absorption and drying mechanism are arranged inside the water storage cavity for preventing the sediment from spreading again. The present invention is provided with an automatic drainage mechanism, and the inclination angle of the mounting plate can change with the one-time addition amount of the medical sewage. The more the one-time addition amount, the smaller the inclination angle of the mounting plate, thereby ensuring the effective reaction time between the medical sewage and the biofilm bed, and can effectively remove the pathogenic microorganisms in the medical sewage, and prevent the spread of pathogens after the medical sewage is precipitated and discharged.

This invention belongs to the field of tower foot welding technology, specifically referring to a welding device for the feet of power angle steel towers. It includes a support frame, a transverse slide, a positioning platform, a measuring drive mechanism, a dust-collecting welding mechanism, a compressed air anti-scattering mechanism, and a controller. The transverse slide is mounted on the upper wall of the support frame, and the positioning platform is symmetrically positioned on the upper walls at both ends of the support frame. The measuring drive mechanism is mounted on the transverse slide and includes a drive component, a sliding component, and a measuring component. The drive component is located on the upper walls at both ends of the transverse slide, the sliding component is located on the upper wall of the transverse slide, and the measuring component is located on the side wall of the drive component. This invention provides a welding device for the feet of power angle steel towers capable of collecting welding fumes generated during the welding process and compressing the dust particles in the welding fumes into a cake to prevent secondary diffusion of the fumes.

The utility model relates to the technical field of wastewater treatment, and discloses a metal recovery treater for purifying industrial wastewater, which comprises a bottom plate, a filter box fixedly mounted on the upper part of the bottom plate, a first treatment box arranged on the upper part of the bottom plate, a second treatment box arranged on the upper part of the bottom plate, and a first delivery pump fixedly mounted on the upper part of the bottom plate, the first conveying pump is fixedly installed on the upper portion of the bottom plate, the second conveying pump is fixedly installed on the upper portion of the bottom plate, the first box cover is arranged on the upper portion of the first treatment box, and the machining assembly is arranged on the upper portion of the bottom plate and comprises a dismounting and mounting mechanism arranged on the upper portion of the bottom plate. The input end and the output end of the first conveying pump are respectively communicated with the first treatment box and the second treatment box through connecting pipes. The problems that when an existing device is used for disassembling a filter cover, bolts and set screws need to be rotated for multiple times, so that the disassembling efficiency is influenced, and the applicability of the device is influenced are solved.

The utility model provides a kind of acid precipitation reaction device for salicylic acid production, it is related to chemical production equipment technical field, including reaction tank, the top of the reaction tank is fixedly connected with top cover, the top right side of the top cover is equipped with the feed inlet that passes up and down, the bottom right side of the reaction tank is fixedly connected with collecting tube.The utility model after acid precipitation reaction is completed, precipitate falls into the storage tank in left side, first motor is started at this time, its drive rotating disc rotates, drives the storage tank position of left and right sides to be transposed, the storage tank with precipitate is rotated to right side and is aligned with collecting tube, precipitate falls into collecting box by gravity, simultaneously, empty storage tank is rotated to left side and is aligned with the bottom of conical precipitation area, and new precipitate is received, so circulation realizes the sustained automatic separation of precipitate and supernatant, greatly reduces labor intensity, shortens production cycle, and avoids impurity introduction, significantly improves separation efficiency and product quality.

The application relates to the technical field of water pollution treatment, in particular to a zinc-containing wastewater treatment and recycling device for electroplating production lines. The device comprises a shell, a water inlet part and a first water outlet part are arranged on the shell, a sedimentation shell and a filter are arranged in the shell, interval distributed sedimentation chambers are arranged in the sedimentation shell, adjacent sedimentation chambers are communicated through connecting channels, the sedimentation shell divides the internal space of the shell into two parts of a first chamber and a second chamber, the filter is arranged in the second chamber, and the first chamber and the second chamber are communicated with adjacent sedimentation chambers through the connecting channels. The zinc-containing wastewater is provided with a chemical precipitation space through the sedimentation chambers, so that the zinc content and the sediment content in the wastewater are reduced, the filter is combined to carry out membrane separation treatment on the wastewater, the impurities in the wastewater are deeply purified, the wastewater reaches the recycling standard, the probability that the sediment blocks the filter is reduced, and the wastewater treatment effect is improved.

The invention discloses a method for preparing iron phosphate for a battery and application of the iron phosphate, and relates to the technical field of resource recovery and preparation. The method for preparing the iron phosphate for the battery can be used for treating the anhydrous iron phosphate dust collection material which is high in water content and incomplete in crystal transformation, the iron phosphate in the iron phosphate dust collection material is leached out through a phosphoric acid aqueous solution, after Fe < 3 + > is reduced into Fe < 2 + >, porous iron phosphate is synthesized in combination with a surface dispersing agent and segmented oxidation aging treatment, and the iron phosphate for the battery is obtained through roasting. The circulation of the dust collecting material and the recycling of the iron phosphate are realized.