19 results about "Acidification - Treatment" patented technology

The application discloses an acidification soil heavy metal passivation and acidification treatment integrated method, and aims to solve the pollution problem of karst pyrite mine area soil. The method comprises the following steps: S1, preparing an improving agent: S11, taking modified dolomite powder, modified rectorite, sulfonated asphalt powder-pullulan composite microspheres, modified chitosan quaternary ammonium salt, modified fly ash based pectin carrier and modified rice husk ash, and uniformly mixing the same to obtain a mixture; S12, adding hydroxyapatite-zeolite composite filler into the mixture, then adding water to adjust the water content of the system to 25%-40%, inoculating a jelly-like bacillus-paenibacillus complex inoculant, fully stirring and mixing, and preparing the improving agent. The method can effectively optimize soil structure, stabilize lead, zinc, cadmium, arsenic and other heavy metals, degrade sulfates, improve soil fertility and microbial activity, and is suitable for the environmental characteristics of karst area rainfall leaching, and can meet the treatment and application requirements of the compound contaminated soil.

The application provides a method for removing nitrogen and phosphorus in sludge, and relates to the technical field of sewage treatment. The method comprises the following steps: (1) sludge dewatering treatment; (2) sludge pretreatment; (3) hydrolysis acidification treatment; a mixture of divalent salt and trivalent salt is added in the hydrolysis acidification treatment, and it is unexpectedly found that the crystallinity of the layered double hydroxide formed by co-precipitation of the mixed salt solution is better, the specific surface area is larger, more carriers can be provided for microbial reproduction, the reproduction and metabolism of microorganisms are strengthened, and therefore the hydrolysis acidification efficiency of the sludge is better improved, and the nitrogen and phosphorus removal effects are obviously improved.

The present application relates to a kind of high-purity nicotine preparation method derived from tobacco stem, belong to plant extraction technical field.This method is for the large amount of tobacco stem waste produced in the process of tobacco planting and baking, proposes an efficient nicotine extraction method.By crushing tobacco stem, using acid aqueous solution for acidification treatment, then using alkaline solution to adjust pH value and carry out steam distillation, collect distillate.Subsequently, using reverse osmosis membrane concentration and molecular distillation technology for purification, obtain high-purity nicotine solution.This method does not use organic solvent, reduces the security risk, at the same time improves the extraction rate and purity of nicotine, purity can reach 95%~99%, extraction efficiency is more than 85%.In addition, the method uses membrane distillation process to reduce energy consumption, reduce the loss of active ingredients, and further remove impurities through molecular distillation technology, prevent nicotine degradation and oxidation deterioration.The implementation of the present application not only realizes the high value-added utilization of tobacco stem, but also improves the economic benefit, reduces the pollution to the environment.

The application discloses a kind of proton exchange membrane, its preparation method and the membrane electrode for electrolyzing water hydrogen production.The preparation method of the proton exchange membrane includes the following steps: (1) preparation polyaromatic ether base polymer;(2) preparation sulfonated polyaromatic ether base polymer;(3) sulfonated polyaromatic ether base polymer is ground into powder, and is made into homogeneous solution, then homogeneous solution is poured on clean glass plate, vacuum drying and further acidification treatment obtain proton exchange membrane.The application provides a kind of membrane electrode for electrolyzing water hydrogen production, including the above-mentioned proton exchange membrane, cathode catalyst layer and anode catalyst layer located at the two sides of proton exchange membrane respectively, and cathode diffusion layer and anode diffusion layer respectively located at the outside of cathode catalyst and anode catalyst layer, the binder in the cathode catalyst layer and anode catalyst layer is the ethanol solution of the above-mentioned sulfonated polyaromatic ether base polymer.The membrane electrode of the application has excellent performance in electrolyzing water hydrogen production.

The present application relates to the technical field of hydrolysis and electrocatalytic oxidation, and particularly relates to an electro-anode composite hydrolysis membrane capable of synchronously performing hydrolysis and by-product electrocatalytic oxidation reaction on organic phosphorus pollutants, and a preparation method and application thereof. The present application loads a composite conductive catalytic layer on a polyvinylidene fluoride membrane, wherein the composite conductive catalytic layer comprises multi-walled carbon nanotubes after acid treatment and a zirconium-based metal organic framework with zirconium as a metal center. Meanwhile, by virtue of the highly adjustable topological structure, large specific surface area of the metal organic framework and the high conductivity of carbon nanotubes, the electro-anode composite hydrolysis catalytic membrane is realized to continuously operate in a flow-through reactor, so as to increase the contact and oxidation efficiency of pollutants and the composite membrane interface, and overcome the problems of limited mass transfer and treatment of toxic by-products after hydrolysis of pollutants. The electro-anode composite membrane can realize the synchronous hydrolysis and degradation of toxic by-products on organic phosphorus pollutants.

The application discloses a surface fluorescence chromatography resin embedding method suitable for immunostaining samples, and comprises the following steps: S1, biological tissue sample pretreatment; S2, gradient ethanol dehydration and tissue blackening; S3, gradient resin permeation; S4, acidification treatment; and S5, resin polymerization molding. The application also comprises a biological tissue sample imaging method, which comprises the step of imaging the biological tissue sample obtained by the embedding method in a fMOST system sodium carbonate solution environment. The application temporarily quenches the pH-sensitive chemical probe by adding HAc; in combination with the fMOST imaging system, the reactivation is realized in the alkaline solution environment, the blackening chemical chromatography high-precision imaging is realized by reactivating the sample imaging surface, and the immunostaining sample has the advantages of high fluorescence retention rate.

The subject invention provides compositions and methods for improved acidizing treatments in oil and gas wells, as well as for enhancing oil recovery. Advantageously, the invention utilizes naturally-derived ingredients to replace and / or reduce chemical acidizing additives in order to simplify acidizing jobs, reduce logistics and improve efficiency. Furthermore, the invention allows for acidizing additives that are typically incompatible to be combined into a stable formulation without high energy input and with reduced need for on-site preparation.

The application discloses an energy-saving and recycling erythromycin thiocyanate wastewater treatment method and system, which comprises the following steps: firstly pretreating high-concentration erythromycin thiocyanate wastewater; adding an oxidizing agent to effluent water after the first pretreatment and evaporating and concentrating; carrying out anaerobic ammonia oxidation treatment on condensate generated in the evaporation and concentration; mixing mother liquor generated in the evaporation and concentration with low-concentration erythromycin thiocyanate wastewater and secondarily pretreating the mixed wastewater; mixing effluent water after the secondary pretreatment with effluent water after the anaerobic ammonia oxidation treatment and carrying out hydrolytic acidification treatment on the mixed effluent water; sequentially carrying out anaerobic treatment, advanced biochemical treatment and advanced catalytic oxidation treatment on effluent water after the hydrolytic acidification treatment, and discharging the effluent water up to the standard. The application combines the oxidation process with the evaporation process, simultaneously and efficiently removes erythromycin titer and thiocyanate, and eliminates the inhibition of the anaerobic biological process.

This invention relates to the field of harmless treatment technology for oily sludge, specifically to a method for preparing carbon quantum dots from oily sludge. Conventional methods for preparing carbon quantum dots from oily sludge have limitations in yield and fluorescence intensity. To address these issues, this invention provides a method for preparing carbon quantum dots from oily sludge. Considering the complex composition of oily sludge, this invention designs a multi-stage purification process chain of "ultrasonic extraction—water washing—Soxhlet extraction—acidification treatment." Each step works synergistically, purifying the sludge step by step to ultimately obtain a high-purity refined organic carbon source. The refined organic carbon source removes impurities through gentle solvent extraction and acid washing, maximizing the preservation of the organic carbon source's chemical activity and structural integrity. In the hydrothermal reaction, it can be effectively converted into carbon quantum dots, avoiding carbon source loss or activity reduction due to over-processing, thus further improving the yield and fluorescence intensity of carbon quantum dots.

The application discloses a hydrolytic acidification sewage treatment device, and relates to the technical field of sewage treatment. The device comprises a box body, which is divided into a water inlet area, a reaction area and a water outlet area in sequence along the flow direction of sewage. A water distribution assembly is arranged in the water inlet area and comprises a water distribution main pipe and water distribution branch pipes which are in communication with the water distribution main pipe and are uniformly distributed at the bottom of the water inlet area. A plurality of water distribution holes are arranged on the water distribution branch pipes. A filler assembly is arranged in the reaction area and is used for adhering and enriching hydrolytic acidification microorganisms. A water outlet assembly is arranged in the water outlet area and is used for collecting and discharging treated sewage. A reflux assembly is arranged between the water outlet area and the water inlet area and is used for refluxing part of the water outlet to the water inlet area. The hydrolytic acidification sewage treatment device solves the technical problems of uneven water distribution and large floor area of the existing hydrolytic acidification treatment device.

The utility model relates to the acidification treatment technical field of galvanized steel pipe, and disclose a splash -proof acidification treatment device of galvanized steel pipe, including base, the base outer surface one side is provided with bottom jar, the bottom jar inside is provided with acidification jar, the bottom jar inside is provided with device pipe, device pipe inner wall one side is provided with the net board, the device pipe outer surface one side is provided with the elbow pipe, the bottom jar inner wall one side is provided with the screw thread board, the bottom jar outer surface one side is provided with the apron, the apron outer surface one side is provided with the threaded rod, the apron outer surface one side is provided with the auxiliary pipe. The utility model, through being provided in the net board in the device, and the net board penetrates device pipe and acidification jar, when the galvanized steel pipe that needs to be processed is placed in the placing groove, then again cover apron, when the galvanized steel pipe enters the acidification jar, make acidic liquid be extruded, from the net board flow into device pipe, then flow out through the elbow pipe, then prevent splash.

This invention provides a method and system for recovering water resources from gas fields. The method includes: subjecting gas field water to media filtration and / or ultrafiltration membrane filtration to obtain pretreated gas field water; adsorbing lithium from the pretreated gas field water using a lithium adsorbent to obtain adsorbed tailings water; desorbing lithium from the lithium adsorbent after adsorption to obtain a lithium-containing solution; subjecting the adsorbed tailings water to acidification and oxidation treatments sequentially to obtain an oxidized liquid; and subjecting the oxidized liquid to air stripping to obtain gaseous bromine. This method for recovering water resources from gas fields can efficiently recover lithium, bromine, and other resources from gas field water, achieving full utilization of gas field water resources.

This invention discloses a method and system for the synergistic removal of iodine, bromine, and boron from caustic soda brine using an ion-exchange membrane, belonging to the field of brine purification technology in the chlor-alkali industry. The method includes: brine pre-acidification treatment; introducing the acidified brine into a staged stripping tower, and sequentially oxidizing and stripping iodine and bromine by precisely controlling the oxidation-reduction potential in stages; performing reduction dechlorination treatment on the stripped brine to eliminate oxidizing substances; removing boron from the reduced brine through chelating resin adsorption; and introducing the stripped iodine-rich and bromine-rich gas stream into an alkaline absorption tower to recover iodides and bromides. The system includes a pre-acidification module, a staged oxidation stripping module, a reduction dechlorination module, a chelating resin boron removal module, an iodine and bromine high-value recovery module, and a multi-parameter closed-loop intelligent control module. This invention achieves synergistic and deep removal of iodine, bromine, and boron, solving problems such as conflicting iodine and bromine oxidation conditions, short resin life, and resource waste in traditional processes, significantly improving the operational stability of the electrolyzer, and has broad industrial application prospects.

The application discloses a protonated carboxymethyl cellulose human absorbable hemostatic material and a preparation method thereof, and belongs to the technical field of biomedical materials. The hemostatic material takes water-soluble sodium carboxymethyl cellulose as raw material, and first obtains protonated carboxymethyl cellulose through coagulation regeneration and acidification treatment, and then further processes the protonated carboxymethyl cellulose into protonated carboxymethyl cellulose gauze, particles or sponge. By regulating the acidification time, the protonated carboxymethyl cellulose hemostatic material with gradient change of carboxyl content can be prepared. The carboxyl content of the hemostatic material prepared by the application is a key variable of the hemostatic capacity of the material, which can construct a local acidic microenvironment to activate platelets and coagulation factors, the material has the synergistic hemostatic effect of physical liquid absorption and chemical coagulation promotion, and simultaneously has antibacterial property, biocompatibility and human absorbability, and does not need secondary operation for removal. The material can be widely applied to the fields of wound hemostasis, intraoperative and postoperative hemostasis in surgery.

The application discloses a kind of heat-conducting flame-retardant nylon composite material and preparation method thereof.The method is first acidification treatment and composite auxiliary surface modification to carbon fiber, carbon nanotube and graphene, then through twice melt blending to prepare the composite wire material with carbon-based material content 12-30wt%;Using fused deposition molding technology, the wire material is printed into the prefabricated sheet with spiral concentric circle, cross grid and other directional structure;At the same time, the flame-retardant nylon 6 material containing 7-15wt% of red phosphorus master batch and maleic anhydride grafted POE is prepared;Finally, the prefabricated sheet is treated by plasma, and then alternately stacked with flame-retardant particles, and the composite material is obtained by hot pressing.The application builds multidimensional heat-conducting network and optimizes the interface, so that the material has excellent heat-conducting performance, high flame-retardant grade and good mechanical properties, solves the industry problem that function and mechanical properties are difficult to balance in high-filled composite material, and is especially suitable for heat management components in electronic and electrical fields.

This utility model relates to the field of positive electrode acidification treatment, specifically to a positive electrode surface acidification treatment device, including an acidification treatment tank, with a support plate installed on the upper part of the inner wall of the acidification treatment tank. This utility model uses a motor to drive a rotating shaft to rotate, causing rocker arms one and two to rotate simultaneously, driving a stirring paddle to rotate, thereby stirring the solution and improving its acidification effect on the positive electrode. Simultaneously, rocker arms one and two can push a connecting arm to move up and down, causing a pusher plate to move the positive electrode up and down within a sieve frame, thus ensuring effective all-round acidification treatment of the bottom of the positive electrode. This structure allows the positive electrode to move repeatedly up and down, enabling the solution to undergo an all-round acidification reaction. Furthermore, the up-and-down movement during the reaction improves the acidification effect, and the stirring paddle further enhances the acidification effect, thereby improving the quality of the positive electrode acidification treatment.

This invention relates to the field of solid waste treatment technology, and provides a method for disposing of waste residue from fireworks and firecracker production, comprising the following steps: S1, wet collection of the waste residue from fireworks and firecracker production using water to obtain a waste residue slurry; S2, solid-liquid separation of the waste residue slurry to obtain wet residue and washing water; S3, adding the wet residue to a sulfur-dissolving reactor, adding a non-polar organic solvent, stirring, and performing solid-liquid separation to obtain a sulfur-rich organic liquid and residue; S4, distilling the sulfur-rich organic liquid to obtain a non-polar organic solvent and distillate; forcibly cooling the distillate and performing solid-liquid separation to obtain sulfur and residual liquid; S5, washing the residue obtained in step S3 with water and performing solid-liquid separation to obtain washing liquid and aluminum-rich material; S6, sequentially subjecting the washing liquid to acidification, iron-carbon micro-electrolysis, and activated carbon adsorption to obtain purified water. The method provided by this invention cleverly utilizes the addition of an organic solvent to recover elemental sulfur, while simultaneously synergistically reducing perchlorate to achieve full resource recovery.

The application relates to the technical field of composite materials, and discloses a synthesis method of Co2P nanoparticle@Carbon@CNTs composite material, which comprises the following steps: (1) preparing MWCNTs-COOH through acidification treatment; (2) dispersing the prepared MWCNTs-COOH into anhydrous methanol, adding a proper amount of polyvinylpyrrolidone so that the MWCNTs-COOH is uniformly dispersed in the solution, then adding cobalt salt and 2-methyl imidazole in sequence, stirring uniformly and aging to obtain a precursor solution; (3) filtering and washing the precursor solution and drying, then placing the precursor solution in a tube furnace and heating under a reducing atmosphere; finally, phosphorizing the obtained product to obtain the Co2P nanoparticle@Carbon@CNTs composite material. The application can improve the electrochemical activity and structural stability of Co2P, and significantly improve the discharge specific capacity, cycle performance and rate performance of Co2P. The Co2P@Carbon@CNTs composite material has important application value as a negative electrode material of a lithium ion battery.