35results about How to "PH control" patented technology

The biphase anaerobic fermentation process of kitchen refuse to produce hydrogen and methane includes the following steps: 1. sorting kitchen refuse and mixing with water in certain amount; 2. mixing with sludge from sewage treating yard and heat treatment; 3. heat exchange between heat treated mixture and mixture without through heat treatment; 4. anaerobic fermentation of the heat treated mixture in the first phase to produce hydrogen; 5. anaerobic fermentation of the residue from the first phase fermentation in the second phase to produce methane; and 6. using the residue from the second phase fermentation as fertilizer or returning to replace sludge serving as hydrogen producing bacteria source. The process is simple, can recover the biomass energy from kitchen refuse effectively, and has no secondary pollution.

The invention relates to a deodorizing nitrogen-maintaining device coupled by aerobic composting control of organic solid wastes and bio-trickling filter control, and belongs to the technical field of solid waste disposal and resource utilization. The deodorizing nitrogen-maintaining device consists of a bio-trickling filter deodorizing system and a waste liquid back-spraying system. The outlet of the high pressure centrifugal exhauster (8) of the bio-trickling filter deodorizing system is connected with an air inlet pipe (17); the air inlet pipe (17) is arranged at the lower part of the bio-trickling filter; the middle part is a padding layer (6) and the upper part is provided with an air outlet pipe (18); a spraying liquid collecting slot (12) is arranged at the bottom part of the filter; and a vent pipe (14) and the water inlet pipe (13) of the waste liquid back-spraying system are arranged in the slot. The water quality adjusting pool (27) of the waste liquid back-spraying system is also connected with the outlet of a percolate pipeline system (23); a stirring device (31) is arranged in the pool; and a measuring pump (28) is arranged between the water quality adjusting pool (27) and a pipeline system (24). The invention is simple and easy to be operated, and can realize the synchronous control between compost turning, waste liquid back spraying and air supply of the bio-trickling filter; the deodorizing effect of the bio-trickling filter is good; and the ammonia and nitrogen volatilization of the compost can be effectively controlled.

The invention discloses a process for treating manganese phosphate waste water, which combines independent pretreatment and continuous treatment on output solution. The inventive process comprises processing acidifying demulsifying pretreatment on the cleaning waste liquid of degreasing slot independently, and processing coagulation deposition pretreatment on the cleaning waste liquid of phosphating slot, then combining the pretreated degreasing waste liquid and phosphating waste liquid , with normal-overflow washing waste liquid and other surface cleaning waste liquid and cleaning waste liquid without pretreatment to enter into following treatment, wherein the following treatment comprises aeration integral adjustment, first deposition reaction, inclined plate deposition separation, second coagulation reaction, air-float separation, sand filtration, and active carbon adsorption. The invention can effectively resolve the problems of phosphating waste liquid as instable water quality and high fluctuation impact load, with simple operation, high reliability, low cost, and environment protection.

The invention discloses a method for recovering carbon source and nitrogen and phosphorus elements from surplus sludge and belongs to the field of sludge and sewage treatment, aiming at deficiencies that when the surplus sludge is fermented under alkaline environment in which sodium hydroxide is only used for providing alkalinity, the mole ratio of orthophosphate to ammonia nitrogen in fermentation liquor is low, which is disadvantageous to recovery of ammonia nitrogen and phosphorus in the fermentation liquor. In the invention, the pH value of the surplus sewage is controlled at alkaline condition by utilizing the characteristic that sodium phosphate can provide both alkalinity and orthophosphate combined with a sodium hydroxide solution, and organic matters in the surplus sewage are converted into organic acid to a maximum degree by enhancing the hydrolysis of the surplus sewage and restraining the methane production process. Furthermore, the dosage of sodium phosphate is controlled to adjust the mole ratio of orthophosphate and ammonia nitrogen in the surplus sewage fermentation liquor to be (0.9-1.4):1, thus being convenient for recovery of orthophosphate and ammonia nitrogen in the surplus sewage fermentation liquor in a struvite precipitate form. According to the invention, the acid production quantity of the surplus sewage by adopting the method is equal to that under alkaline environment in which sodium hydroxide is only used for providing alkalinity, and the cost is saved.

The invention relates to an extraction method of bean dreg protein and a method used for preparing DPP-IV inhibitory peptide with the bean dreg protein. The extraction method comprises the following steps: placing bean dreg suspension mixed by fresh bean dregs and water at the temperature of 30-50 DEG C, taking out the bean dreg suspension when pH is 3.0-5.0, collecting the lowermost layer of bean dreg protein after the suspension is layered, airing the bean dreg protein at room temperature, adding protease to prepare DPP-IV inhibitory peptide crude product powder, and then carrying out membrane separation or column chromatography to further purify to obtain DPP-IV inhibitory peptide pure product. The extraction method of the bean dreg protein is simple, no acid liquor or alkali liquor needs to be added in the preparation process, and pollution on the environment is avoided. For the method for preparing the DPP-IV inhibitory peptide with the bean dreg protein, the process is simple, the cost is low, the inhibitory ratio of the prepared DPP-IV inhibitory peptide is between 4.1% and 93.2%, and the median inhibitory concentration is between 42.70 mug / mL and 2593.64 mug / mL.

The invention provides a method of preparing iron oxide yellow by using a titanium dioxide by-product ferrous sulphate, belonging to a field of chemistry. The method comprises refining of ferrous sulphate, neutralization reaction, seed preparation, and oxidation synthesis; and the method controls a pH value of a solution during refining of the ferrous sulphate, and thus effectively removes impurities such as manganese, magnesium and zinc. In addition, by separating a seed preparation process into a neutralization reaction process and a seed preparation process, a preparation process of Fe(OH)2 suspension and an oxidation process are separated, thereby effectively controlling the seed to be spindle-shaped or needle-shaped, and improving dispersibility of the seed. The method is good in impurity removal effects, and can effectively control the seed to be spindle-shaped or needle-shaped and improve dispersibility of the seed; and the prepared iron oxide yellow has advantages of good color and high tinting strength.

The invention belongs to the field of chemical engineering, and aims to provide a process and a device for continuously producing a high-quality N-fatty acyl amino acid salt surfactant, which increasean acyl chloride conversion rate and reduces the content of sodium aliphatate. According to the technical scheme adopted by the invention, the process for continuously producing the high-quality N-fatty acyl amino acid salt surfactant comprises the following steps: (1) separately introducing a reaction material amino acid mixture, acyl chloride, liquid alkaline and circulating recycling materialsinto a mixing device to uniformly mix; (2) cooling the uniformly mixed materials through a heat exchanger, conveying the materials into an amidation post with an overflow hole from the bottom by utilizing a conveying pump, and performing amidation reaction at a proper temperature with a proper pH value; (3) enabling an amidation product to overflow from the overflow hole of the amidation post, introducing one part of the amidation product used as the circulating recycling materials into the mixing device to perform circulating reaction, and heating the other part of the amidation product through a heater, and introducing the heated materials into an ageing machine to perform ageing reaction; and (4) obtaining an aged reaction product, namely a target product N-fatty acyl amino acid salt.

The invention discloses a process method for separating and purifying cobalt solution by extraction chromatography, which comprises the following steps that: the cobalt solution is extracted by a chromatographic column; the extracted cobalt solution is leached by a buffer system; and strip liquor is subjected to leaching-concentrating to form the high-purity cobalt solution, wherein the leacheateleached by the buffer system is HAc-NaAc buffer solution of which the pH value is between 2 and 3; the buffer leacheate is utilized to leach nickel in a P507 extraction and leaching resin column to the water phase of the leacheate; and the flow rate of the leacheate is 1.0 to 1.5 times per hour of the void volume of the chromatographic column. The P507 extraction chromatography combines the high selectivity of a liquid-liquid extraction method and the multistage property of an ion exchange method, strengthens the capability of purifying the cobalt solution and has the characteristics of simpleprocess flow, easy operation, high equipment capacity, less investment and low consumption of chemical materials. The extraction chromatographic process adopts the HAc-NaAc buffer leaching system, sothe control on the pH value in the leaching process is ensured, the leaching efficiency and the recovery efficiency of cobalt are improved, the quality of a product is high and stable, and the purityof the final product of metal cobalt is above 4N.

The invention discloses a method for preparing ultra-low bulk density magnesium oxide, and relates to nano magnesium oxide. The method comprises the following steps: preparing a soluble magnesium salt solution and a sodium hydroxide water solution; adding the soluble magnesium salt solution to the sodium hydroxide water solution at a constant speed under agitation; washing, centrifuging or filtering the obtained white sediment after reaction is ended; and soaking with an organic solvent, protecting holes and drying; sintering the dried white ultra-low bulk density magnesium hydrate powder, so as to obtain the ultra-low bulk density magnesium oxide. By adopting the prepared ultra-low bulk density magnesium oxide, the bulk density is smaller than 0.1g / ml, especially smaller than 0.04g / ml, and the ultra-low bulk density magnesium oxide is applicable to being used as an adsorbent, a catalyst and a catalyst carrier, can be applied to an inorganic fire retardant, flue gas desulfurization in environmental protection, deammoniation and dephosphorization in wastewater treatment, and has broad application prospects in the aspects of acid rain and soil management, food and feed additives, oil additives, agricultural magnesium fertilizers, cigarette paper smoke-suppression coatings and biological and pharmaceutical preparations, and in the fields such as ceramics, paints and medicines, microelectronics.

The invention provides a method for deacidifying a paper by electro-adsorption. The method comprises S1, contacting a paper to be treated with a water absorbent pad so that the paper to be treated iswetted by water in the water absorbent pad containing water, and S2 placing the wet paper and the water absorbent pad contacting with the paper between an inert anode plate and an inert cathode plate,wherein a porous carbon material is paved on the surface of the inert anode plate, and carrying out electro-adsorption through direct currents to obtain the deacidified paper. The electrosorption deacidification speed of the method is much faster than that of the traditional aqueous solution method and one process takes only a few minutes so that the negative impact of the traditional soaking anddeacidification technology on the paper is greatly reduced. The method is suitable for treatment on a single sheet, multiple sheets and whole book and realizes precise control of pH. The method has the advantages of simpleness, reliability, environmental friendliness, safety and low cost and solves the problem that a wet state in a long time may cause paper deformation, writing fading and ink penetration.

The invention discloses a method and system device for removing nitrate in water based on S-Fe collaborative autotrophic denitrification. The method comprises the steps of treating wastewater containing sulfate in an anoxic or anaerobic reactor by virtue of sulfur particles, iron particles and denitrifying bacteria, and separating water by virtue of a membrane module. The invention further provides the system device for implementing the method. According to the system device, the autotrophic denitrification of S and the autotrophic denitrification of Fe are collaborated in the reactor, denitrification and separation processes are combined together, activated sludge, S and Fe are fluidized through stirring, and efficient autotrophic denitrification is adequately carried out. According to the method, the autotrophic denitrification of S and the autotrophic denitrification of Fe are collaboratively coupled, and the control of the generation amount of sulfate radicals and the maintenance of the pH value of a reaction system are simultaneously realized. The method is suitable for treating medium-concentration and high-concentration nitrate wastewater, has the advantages of high nitrate removal rate, simplicity in operation, small occupied area, low operation cost and the like and will play an important role in treatment practice of nitrate wastewater.

The present invention relates to an after-vulcanization stabilizer thiosulfuric acid derivative for rubber industry, especially to a preparation method for a thiosulfuric acid derivative. According to the preparation method, an alkaline buffer solution is adopted to adjust the pH value of a reaction solution to an alkaline state, such that an organic halogenated alkane and a water-soluble inorganic thiosulfate can be subjected to a complete reaction, and generation of a byproduct thiol compound is inhibited, such that reaction efficiency is effectively improved, the resulting product has high purity, and the preparation process has characteristics of simpleness, easy performing, and low energy consumption.

The invention provides a Ni-Rh-based diesel reforming catalyst and a preparation method and application thereof, and belongs to the technical field of diesel reforming catalysts. According to the invention, the Ni-Rh-based catalyst is prepared by adopting the membrane dispersion microreactor to carry out coprecipitation reaction, and in the membrane dispersion microreactor, rapid and uniform mixing of hydroxide radicals in a dispersion phase and metal ions in a continuous phase is realized by virtue of cross-flow shearing of a microfiltration membrane on the dispersion phase so that the micromixing efficiency is improved, the mass transfer of hydroxide radicals and metal ions in the nucleation stage in the coprecipitation reaction process is enhanced, and the pH value of the reaction is more accurately controlled, the mass transfer efficiency is effectively improved, the dispersion degree of active metal (Ni-Rh alloy) is remarkably improved, meanwhile, Zr is more uniformly doped into CeO2 to form a cerium-zirconium solid solution, Ni-Rh alloy is more uniformly loaded on the cerium-zirconium solid solution carrier, the reaction time is shortened, the production efficiency is high, continuous production can be realized, and the catalyst has important market value and popularization value.

The present invention discloses a product formula and a using method of a special three-in-one compound food additive with water retention, color protection and blackening prevention and for beef rolls. The product is composed of food-grade phosphate, carbonate, citric acid, salt, antioxidant and a small amount of food ingredients. The product is made into an aqueous solution, and a proper amountof the additive is added during rolling. The additive can effectively reduce the moisture loss of meat rolls, maintain the original taste and color of meat rolls, prolong the shelf life, integrate three functions into one, and avoid exceeding risks caused by the superposition use of a plurality of single-function compound food additives in the market.

The invention belongs to the technical field of sealant preparation, and particularly relates to a preparation method of a building sealant. In the preparation process of a tackifying dispersant usedin the invention, corn starch reacts with epoxy chloropropane, and a fatty acid salt can replace a part of an inorganic salt, so the influence of high-salinity concrete is reduced, the gelatinizing density of a water-reducing polymer in concrete is increased, and the plugging performance of the sealant is improved; after a soap-free latex forms a film, no emulsifier migrates to the surface of a film, so the water resistance and cohesiveness of the soap-free latex film are improved, the latex film can be formed in cured sealant stone, and strength and bonding stability at high temperature are improved; the pH value of the raw materials of the water-reducing polymer is adjusted through a saturated sodium silicate solution, so the strength of the polymer is improved, and the high temperatureresistance of the polymer is enhanced; and meanwhile, sodium silicate is dissolved in water to form a colloidal aqueous sodium silicate solution, so the microstructure of plastic slurry and sealant stone is improved, the compactness of the sealant after curing is improved, the bonding strength of the sealant is improved, and the sealant has a wide application prospect.

The invention discloses a corrosion and scale inhibition control method of a circulating cooling water system and a corrosion and scale inhibitor, and the method comprises the following steps: addinga pH value stabilizing agent, performing adding and monitoring by adopting an automatic pH value adjusting device, and controlling the pH value of the system to be 7.8-9.0; adopting an automatic dosing system for adding the corrosion and scale inhibitor, and controlling corrosion and scaling of the system. The corrosion and scale inhibitor comprises the following components in percentage by weight: 10%-15% of 2-phosphonobutane-1, 2, 4-tricarboxylic acid, 5%-20% of a fluorescent polymer, 0.5%-5% of sodium molybdate, 0.5%-1% of benzotriazole and the balance of water. According to the technology,the pH value of the circulating cooling water can be well stabilized, organic active matter components in the corrosion and scale inhibitor cooperate with molybdate to form a low-molybdenum efficientlow-salt water corrosion and scale inhibitor formula, a polymer containing a fluorescent monomer is used, an online fluorescence detector is used for achieving automatic dosing, stable operation of asystem is guaranteed, and the requirement for the corrosion speed of system pipelines and equipment is met.

The invention discloses a microorganism-based gas deodorizing method. The method comprises the step of carrying out absorption and biotransformation treatment on an odor gas to be treated, wherein theabsorption and biotransformation treatment comprises the steps of reversely contacting the odor gas with absorption liquid which is sprayed circularly through three layers of microbial fillers, and carrying out absorption and biotransformation, and the absorption liquid is up-to-standard discharge wastewater of a sewage treatment aerobic system. By adopting the gas deodorizing method obtained bythe technical scheme of the invention, the pollution of the odor gas can be completely eliminated, nutrient substances are provided for microorganisms while the deodorizing treatment is carried out, the activity of the microorganisms in the filler layers is maintained, and simple, efficient and continuous treatment of the odor gas is realized. Meanwhile, the deodorizing device provided by the invention is more beneficial to the operation and control of deodorizing operation of the odor gas and provides convenience for production.

A process for preparing the doped spherical nickelous hydroxide includes such steps as mixing 2-valence Ni salt and Co salt with ammonia water and ammoniunm salt to obtain complex solution, adding it along with the mixed solution of metallic salt and alkali solution into reactor, reaction while stirring, and washing the deposit. The resultant doped spherical nickelous hydroxide can be used to prepare the multi-element metallic oxide, which can be used to prepare the active positive electrode of Li-ion battery.

The invention discloses a control method for a remote control system for water treatment intelligent running. The control method comprises the following steps that: after the system is electrified, each unit is started to run, a treatment function in a biological treatment device starts to run, the control unit of a biochemical system is started, and used for detecting various parameters in the biological treatment device, if one or more parameters exceed a preset safety range value, then an alarm device gives an alarm, a central processor sends a regulation instruction to the control unit of the biochemical system, and regulates the parameters which exceed the safety range value; if the various parameters are all normal, then the control unit of the biochemical system normally runs, and the biological treatment device normally runs; the central processor summarizes the data of each parameter in the control unit of the biochemical system in real time, and displays the real-time data of each parameter and the running condition of the biological treatment device through a data display module; a data sending module connected with the central processor is connected with a remote receiving end through a network, and sends the real-time data of each parameter to a main server.

The invention discloses a preparation method of a waterproof agent, and belongs to the technical field of building waterproofing. A soap-free emulsion method is adopted in the process of preparing anacrylic emulsion; the water resistance and the cohesiveness of the waterproof agent are improved; corn starch reacts with epichlorohydrin, and grafted with acrylic acid, a graft with a network structure is obtained; coconut oil reacts with ethylene glycol butyl ether under an alkaline condition to obtain fatty acid salt; the plugging waterproof performance and the durability of the waterproof agent are improved; sodium silicate in the waterproof agent reacts with calcium ions in cement paste to generate a hydrated calcium silicate C-S-H colloidal core, C-S-H gel can be formed by the hydrated calcium silicate C-S-H colloidal core and calcium hydroxide in cement, and whiskering problem of the waterproof agent is avoided; sodium silicate is dissolved in water to form a colloidal sodium silicate aqueous solution, the particle size of the colloidal sodium silicate aqueous solution is smaller than that of cement particles, concrete micropores and gaps formed by hydration of the cement particles can be filled with particles of the colloidal sodium silicate aqueous solution, the microstructure of plastic slurry and set cement is improved, and the permeability of concrete to water is reduced.

The invention provides a meptazinol hydrochloride injection medicine composition and a preparation method thereof. Only a small amount of acetic acid-sodium acetate is used to serve as a buffer system in the prescription, the pH value of liquid medicine can be controlled within the reasonable range, meanwhile, meptazinol hydrochloride injection is prevented from being degraded in the placement process, and product quality is remarkably improved; meanwhile, use of antioxidant is omitted, adverse reaction caused by sodium calcium edetate is avoided, and safety is guaranteed; a preparation process of introducing nitrogen twice is adopted, and product stability is greatly improved.

The invention provides a method for adjusting a pH value of a printing and dyeing washing machine and a conveying system used for the same. The method comprises the steps that after a cloth surface isinitially cleaned in a clean water area, the cloth surface is introduced into an adjustment area for continuous cleaning. Carbon dioxide gas is introduced into the adjustment area to adjust the pH value of a solution in washing tanks. After the cloth surface is cleaned in the adjustment area, the pH value is between 5.0 and 7.5. The conveying system comprises a liquid storage tank. A washing machine comprises n washing tanks. The washing tanks are divided into clear water areas and adjustment areas. The number of the clear water areas is a, and the number of adjustment areas is b, wherein a+b=n. The adjustment areas of the washing tanks are connected with the liquid storage tank by pipelines, and a flow meter A and a valve A are arranged in sequence on a connecting pipeline. Using the method to adjust the pH value of the cloth surface, the pH range of the cloth surface is maintained between 5.0 and 7.5, and the pH value is stable. The conveying system is used to transport carbon dioxide, and has the advantages of high utilization rate of carbon dioxide and stable pH change of the cloth surface.

The invention discloses a preparation method of downhole oil tube sealing daub and belongs to the technical field of daub. Coconut oil and ethylene glycol butyl ether react under the alkaline condition to obtain fatty acid salt, the emulsification performance of the daub is improved, the fatty acid salt can replace part of inorganic salt, and influence of underground mud with high degree of mineralization is reduced. After soap-free emulsion latex forms a film, an emulsion does not contain an emulsifier and a hydrophilic group is joined to the surface of latex particles in a chemical bond form, so that the water resistance and the cohesiveness of the soap-free latex film are improved. In the preparation method, a modified substance of a water-reducing high polymer is sodium silicate, the pH value of the polymer is controlled, the hydrolysis speed of the polymer is reduced, a physical crosslinking point of a copolymer is formed, the strength of the polymer is enhanced, the high-temperature resistance of the polymer is improved, the microstructure of plastic slurry and daub stone is improved, water loss is reduced, the compactness after curing of daub is increased, the permeability of the daub is reduced, and the application prospect is broad.

The invention discloses a management method for improving quality of blueberry fruits. After being planted and cultivated, blueberry seedlings are managed. The management method includes processes ofirrigation, fertilization, pollination, laying of a reflective film, and soil management. The management method has the advantages that the reflective film is laid under a tree in a young fruit stageof blueberries to improve photosynthesis of the blueberries, and accordingly, accumulation of anthocyanin and vitamin C in the fruits is promoted; a bee pollination method is used, and accordingly, the fruiting rate and the weight of a single fruit are increased.

The invention relates to the technical field of sodium ion batteries, in particular to a positive electrode material precursor, a preparation method thereof and a positive electrode material.The preparation method comprises the following steps that S1, an iron source, a copper source and a first complexing agent are mixed and subjected to a complexing reaction, and a mixed solution is obtained; s2, a reducing agent, a second complexing agent and water are mixed to obtain a base solution, a manganese source, a nickel source, the mixed solution and an alkaline solution are added into the base solution for precipitation reaction, and the positive electrode material precursor is obtained.By means of the method, the four elements of manganese, iron, nickel and copper can be evenly distributed in an atomic scale, the synergistic effect of manganese, iron, nickel and copper is fully exerted, and the positive electrode material is obtained. And the specific capacity of the positive electrode material formed by the precursor is remarkably improved by controlling the molar ratio of four elements of manganese, iron, nickel and copper in the molecular formula.

The invention discloses a fumaric acid synthesis reaction device, which comprises a regulation instrument (1), a dosing mixing instrument (2) and a reaction instrument (3). The regulation instrument (1), the dosing mixing instrument (2) and the reaction instrument (3) are connected in order through pipelines (4). One side of the regulation instrument (1) is provided with a water inlet (5), and one side of the reaction instrument (3) is provided with a water outlet (6). A sewage lifting pump (7) is disposed between the regulation instrument (1) and the dosing mixing instrument (2). The dosing mixing instrument (2) is internally provided with a pH sensor (8) and an automatic control instrument (9). The reaction instrument (3) is internally provided with a blender (10) and a pH analyzer (11) connected to the automatic control instrument (9). The acid-base neutralization device involved in the invention can accurately control the pH value, ensures the acid-base neutralization effect, and facilitates subsequent processes.

The invention discloses a method for treating C5 resin wastewater, belongs to the technical field of wastewater treatment, and mainly solves the technical problems of corrosion and blockage of downstream pipelines of a C5 resin production system, paralysis of a sewage treatment system and environmental pollution in the prior art. The method comprises the following steps: discharging wastewater produced by a C5 resin device into an oil separation tank for oil separation treatment, separating resin gel floating matters, grease such as heavy oil and other solid substances in the high-salinity wastewater, neutralizing the high-salinity wastewater with concentrated sulfuric acid in a neutralizing tank until the pH value is 7.0-8.0, so that aluminum hydroxide in the high-salinity wastewater is precipitated in a granular form, and separating the solid substances in the high-salinity wastewater; and solid-liquid separation can be carried out through a filtering means, so that wastewater treatment of the C5 resin device is completed. According to the C5 resin wastewater treatment method provided by the invention, corrosion and blockage of a downstream pipeline of a C5 resin production system are avoided, and the risk of environmental pollution caused by paralysis of a downstream sewage biochemical treatment system is also reduced.

The invention discloses a PH value control method, device and equipment for fermentation liquor in a fermentation tank. The method comprises the following steps: acquiring a first PH value collected by a first PH value collector in the fermentation tank in real time; acquiring a first difference value between the first PH value and a preset PH value; and adjusting the pH value in the fermentation tank according to the first difference value. Through the above mode, on-site manual operation can be replaced by program control, the beneficial effect that the PH value of fermentation liquor in the fermentation tank can be controlled in real time is achieved, and the labor cost is saved to a certain extent.

The invention discloses an organ preservation device with adjustable solution redox potential, which is characterized by comprising a control box (22), a liquid storage box (1) and a PID controller (23). The invention further discloses an implementation method of the organ preservation device with the adjustable solution oxidation-reduction potential. The implementation method comprises the following steps: establishing various index databases of preservation solutions required by different organ preservation; and after the organ to be stored is put into the storage liquid, extracting variousindex data of the storage liquid of the organ to be stored from various index databases of the storage liquid, and sending the index data to a PID controller (23) for storage. According to the invention, the harmful components generated by continuous metabolism in the organ preservation process can be effectively eliminated, and the stability of macromolecules with the oxygen carrying function inthe preservation liquid in the organ containing cavity is ensured; meanwhile, through the arranged detection mechanism, real-time monitoring of the temperature, the pH value, the PO2 and the ORP of the solution of the preserving fluid in each chamber can be achieved.

The invention provides a modification method for improving the catalytic activity of a Y-type molecular sieve. The modification method comprises the following steps: adding a phosphorus-containing compound into Y-type molecular sieve slurry and mixing and pulping; carrying out refining treatment; then adjusting the pH (Potential of Hydrogen) value of the slurry and raising the temperature and reacting; finally, adding a magnesium-containing compound into the mixed slurry, and mixing and pulping; raising the temperature and exchanging to obtain the modified Y-type molecular sieve. By adopting the modification method, the catalytic activity and a pore structure of the molecular sieve can be remarkably improved and the process only needs a two-step exchange technology; high-temperature roasting is not needed; a modification process is simple and industrial production is easy to realize.