1002results about How to "Stable pH" patented technology

A hydrogel polymer obtained by polymerizing a monomer component including acrylic acid (salt) is post-neutralized so that each of polymer particles derived from a polymer produced by neutralizing the hydrogel polymer has an allowable neutralization ratio. The polymer as obtained by neutralizing the hydrogel polymer is reacted with a crosslinking agent reactive to a functional group of the polymer. The allowable neutralization ratio, for example, is a neutralization ratio which is not lower, by not less than 20 mole percent, or more than, at least 55 mole percent, than an average neutralization ratio of a mass of the polymer particles, and the post-neutralization is carried out so that a number of polymer particles having a non-allowable neutralization ratio outside the allowable neutralization range is not more than 10 in 200 polymer particles, thus obtaining a water-absorbent agent having high absorbency under no applied pressure and high pressure wherein the amount of water soluble component is lower compared with the conventional water-absorbent agent and a change in pH of a swollen gel is small.

The invention discloses an injection-purpose medicine composition for improving stability of ligustrazine medicine injection formulation and a preparation method of the injection-purpose medicine composition. The injection-purpose medicine composition is prepared by the method comprising following steps: dissolving ligustrazine salt in water for injection, adjusting the pH value of the liquid medicine by adding citric acid and / or sodium citrate used as a pH regulator, wherein the dosage of the citric acid and / or sodium citrate ranges from (0.1mg to 200.0mg) / 100ml. In the invention, pH value of the injection liquid can be more stable, the content of ligustrazine degradation substance is greatly reduced compared with that of the prior art, the clarity of the ligustrazine injection liquid is improved under the condition of not using other cosolvents to increase the clinical application risk, particularly, the problems of small white spots, white blocks and solution turbidity are solved under the condition that the ligustrazine injection liquid is stored for a long time by adopting the prior art, and the medicine composition ensures that the inspection of visible foreign substances of the product is in accordance to the formulation of medicine quality standard, and is convenient for clinical medication and popularization.

The invention discloses a compound microorganism fungicide for improving the water quality of a culturing water body and a preparation method. The compound microorganism fungicide is prepared by taking the strains by weight percent: bacillus subtilis, yeast, lactic acid bacteria, photosynthetic bacteria, nitrifying bacteria, bacillus licheniformis, and the like. The preparation method comprises the following steps of: firstly, culturing the bacillus subtilis and bacillus licheniformis: culturing the bacillus subtilis and bacillus licheniformis on a beef extract peptone culture medium; secondly, culturing the yeast: culturing the yeast on a lactic acid-potato-glucose culture medium; thirdly, culturing the lactic acid bacteria: culturing the lactic acid bacteria on a wort culture medium, inoculating on a triangular flask for culturing, and finally inoculating on a solid culture medium for culturing; fourthly, culturing the photosynthetic bacteria; fifthly, culturing the nitrifying bacteria; and sixthly, stirring and mixing the cultured strains by weight ratio, and drying at low temperature, thereby obtaining the compound microorganism fungicide. The formula is reasonable; the use is convenient; water is uniformly splashed; the method is easily performed; and the operation is convenient.

The invention discloses a catalyst for the complete methanation of synthesis gas from coal and a preparation method thereof. The catalyst is prepared by using NiO as an active component, one or two of rare earth metal oxides La2O3, CeO2 and Sm2O3 as a first assistant, one of alkali oxides CaO, BaO and SrO as a second assistant, and magnesium aluminate spinel formed by mixing Al2O3 with MgO as a carrier, and the obtained catalyst contains the ingredients in percent by mass as below: 20% to 70% of NiO, 15% to 50% of Al2O3, 6% to 30% of MgO, 5% to 20% of the rare earth metal oxide-type first assistant, 1% to 8% of the alkali oxide-type second assistant and 1% to 3% of graphite; the catalyst provided by the invention has the advantages of high catalytic activity, high mechanical strength, good thermal stability, strong carbon deposition resistance, strong resistance to toxicants in feed gas, excellent low temperature activity and low cost.

The invention relates to full-mixed pellet feed for mutton sheep and a production method thereof. The feed is composed of the following raw materials by weight percentage: 30% to 50% of maize straw, 5% to 15% of alfalfa, 5% to 10% of beet pulp, 5% to 10% of dry brewer's grains, 15% to 25% of corn, 5% to 10% of bran, 5% to 10% of bean pulp, 5% to 10% of cotton seed meal, 1% to 5% of molasses and 1% to 2% of premixed feed. The production method comprises kneading, smashing and mixing the raw materials with the mixing uniformity within 5%, and after mixing evenly, using a special feed pellet pressing machine to pelletize with steam pressure of 0.3 MPa to 0.4 MPa, temperature of 70 DEG C to 75 DEG C and ring die diameter of 6mm to 12mm. The feed has the advantages of being rich in nutrition for all growth stages of mutton sheep, good in palatability, appropriate in concentrate-roughage ratio, favorable for relative stability of potential of hydrogen (pH) in rumen of mutton sheep and capable of effectively preventing digestion from disordering to greatly improve feed conversion rate. Daily gain of mutton sheep having the feed can be improved by more than 10%, and feed cost is reduced by more than 5%.

The invention discloses a method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur. The method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur sequentially comprises the following steps: introducing the acid gas into a combustion furnace to be mixed with air introduced by the other pipeline so as to carry out a combustion reaction; introducing the gas reacted in the combustion furnace into a cooler to be cooled to 230-250 DEG C, after cooling, separating the cooled liquid sulfur at a liquid outlet, introducing mixed gas in the combustion furnace into a catalyst reactor, enabling hydrogen sulfide to react with sulfur dioxide in the catalyst reactor so as to generate sulfur and water, and separating the generated liquid sulfur at the liquid outlet of the catalyst reactor; introducing the mixed gas in the catalyst reactor into a hydrogenation reactor and enabling the sulfur dioxide to react with hydrogen in the hydrogenation reactor; introducing the gas in the hydrogenation reactor into a hydrogen sulfide absorption device and preparing the hydrogen sulfide into elemental sulfur under the action of an alkaline solution, a complex catalyst and the introduced air. The method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur has the advantages of short process route, high quality of produced sulfur and low energy consumption, is capable of fully removing SO2 gas and is green and environmentally friendly.

The invention discloses nutrient soil for flowers, relating to the technical field of biofertilizers. The nutrient soil is composed of the following components in percentage by mass: 20% of leaf mould, 20% of mountain clay, 30% of soil, 2% of chicken manure, 18% of saw dust, 9% of bulking agent, 0.5% of preservative and 0.5% of plant nutrients. The nutrient soil is rich in nutrient, low in preparation cost, favorable in sterilization and insecticide functions and suitable for households; in addition, the nutrient soil can provide relatively-large proportional long-acting solid-phase organic matters, a stable pH value and favorable water and air control performance for plants, so that the plants are more convenient in cultivation management, the plants are promoted to be rapidly rejuvenated after the roots of the plants grow, the nutrient requirements of the flowers can be met, and the environment can not be polluted; the soil can be used for most of gramineous plants and a part of woody plants with short branches and compact crowns.

The invention discloses a compound microbiological preparation and a preparation method for controlling the excessive reproduction of blue-green algae. The preparation comprises the following compounds with a certain weight proportion of microbial agents, organic fermentation agents, brown sugar and micro elements. The preparation steps are as follows: A. the preparation of the microbial agent, B. the preparation of the organic fermentation agent, and then the microbial agent\ fermentation agent, brown sugar and the micro elements are mixed based on a certain weight proportion, and finally, the compound microbiological preparation can be prepared. The preparation has reasonable formulation, is convenient to be used, has no pollution to the water, has high control rate and low cost, and is easy and convenient to be operated.

Modified mineral fillers, derived from either a coarse particle kaolin clay or a coarse particle ATH, having excellent utility in thermoset polymers as low paste viscosity fillers are disclosed. The method of treatment involves the use of specific weight ratio combinations of a silane and a long chain aliphatic alcohol. The treatment of clay can also involve the auxiliary use of a surfactant in small amounts, which is utilized to emulsify the silane and aliphatic alcohol treatment components in water either individually or as a co-emulsion blend prior to their addition to the clay. The surfactant, which is preferably a nonionic surfactant having a HLB value of 12-18, aides in uniformly treating all the clay particle surfaces with the silane / alcohol treatment combination. Coarse particle clays having general utility in the invention are those having an average Stokes equivalent particle diameter of at least 3.0 microns, while the coarse particle ATH fillers having general utility in the invention are those having a BET surface area value less than 5.0 m2 / g. Clays or ATH so treated with the inventive silane / alcohol treatment provide unique viscosity reduction benefits in thermoset polymers unattainable by using either treatment additive alone in any amount. This low viscosity characteristic allows the treated mineral products to be used at high loadings in various thermoset compounds, as fillers or extenders, which is advantageous in terms of reducing cost and / or gaining certain performance properties, such as physical reinforcement, composite surface smoothness or flame retardancy.

The invention relates to a chemical palladium plating solution, in particular to a chemical palladium plating solution which can directly form a palladium film with good adhesive force on a chemical nickel plating film formed on a printed circuit board (PCB) and does not affect the chemical nickel plating film serving as a base film. The chemical palladium plating solution contains a soluble palladium salt, a first complexing agent, a second complexing agent and a stabilizing agent, wherein the first complexing agent is one out of ammonia and diamine compounds, and the second complexing agent is one or more out of alcohol amine compounds with 2-7 carbon atoms, amine compounds with less than 7 carbon atoms and aminocarboxylic acid compounds. The palladium plating solution has stable pH, stable deposition rate, long bath service life and excellent bath stability, does not generate cracks, and can obtain the palladium plating film with very low phosphorus content and excellent corrosion resistance, solder connectivity and lead weldability.

The invention relates to a non-aqueous coolant for an engine, which is characterized by comprising the following components in percent by weight: 10-80 percent of ethylene glycol, 10-80 percent of propylene glycol, 5-20 percent of polyol, 0.1-0.8 percent of phosphate-molybdate, 0.2-0.9 percent of silicate ester, 0.1-1 percent of 4-methyl 1H-benzotriazole, 0.2-0.8 percent of citric acid, 0.2-1 percent of sebacic acid, 0.1-1 percent of octanoic acid, 0.4-1.2 percent of citrate and 0.01-0.2 percent of cosolvent. The non-aqueous coolant has freezing point of -30--50 DEG C and boiling point of 130-150 DEG C, and ensures that the cold start of the engine is realized in cold weather; meanwhile, the working temperature of the engine is improved to 95-150 DEG C from the original 85-95 DEG C. The non-aqueous coolant belongs to a non-aqueous system, avoids electrochemical corrosion, and is a buffer system with pH of 7.5-9.5; and the added relevant auxiliaries have active corrosion resistance on aluminum and aluminum alloy and copper.

The invention discloses an inoculant containing homofermentation malolactic bacteria and heterofermentation malolactic bacteria for corn silage and using method thereof. The composite microorganism inoculant for corn silage includes 2*10<9>cfu / g-5*10<10>cfu / g of lactobacillus buchneri and 5*10<9>cfu / g-1*10<11>cfu / g of lactobacillus plantarum. The composite microorganism inoculant for corn silage provided by the present invention employs the homofermentation malolactic bacteria and the heterofermentation malolactic bacteria as acid generation source, thereby increasing preservation effect of corn silage forage. When silage forage prepared from the inoculant of the present invention is used as forage of cow, milk yield and butterfat rate can be increased.

The invention relates to a fully-mixed daily feed for dairy cows, comprising concentrate supplement, silage, weed, alfalfa and carrots, wherein the concentrate supplement comprises grain seeds, cakes, by-products of agriculture product processing and premix feeds. In the invention, the raw materials are smashed and mixed respectively and uniformly, the moisture content of the feed is controlled to be less than 15%, and then the mixture is pressed into finished feed. The invention solves the problem of nutrient unbalance of dairy cows caused by feed intake difference in traditional feeding methods, decreases feed waste, helps relatively stabilize the pH value of dairy cow rumens, avoids digestive system disorder of dairy cows effectively, and improves nutrition condition of dairy cows. By using the feed in the invention and coordinating with the matched management technology, dairy cow eliminating amount can be decreased by about 8% every year and the average milk yield can be increased by 2.5kg per dairy cow, thereby improving economic benefits.

The invention relates to an environmental-friendly water-based antirust agent, which mainly comprises boric acid, ethanolamine, a neutralizer, a corrosion inhibitor, an additive, water and the like. During use, the antirust agent is mixed with the water in a ratio of 1:5-1:20 to form antirust solution, and a steel workpiece is soaked in the antirust solution at the temperature of between 50 and 70 DEG C for 3 to 5 minutes and taken out; a continuous and compact thin film is formed on the surface of the soaked workpiece, so that oxygen and water vapor can be effectively prevented from contacting the surface of the workpiece, the primary color of the workpiece is kept unchanged, and the aim of rust prevention is fulfilled; and the treated workpiece can be directly subjected to the next process, so that the complex process of removing an antirust coating is reduced. The antirust agent does not contain poisonous and harmful substances such as nitrite, phosphate, bichromate and the like, cannot irritate and harm human bodies, and is an environmental-friendly water-based antirust agent.

The invention belongs to the technical field of aquiculture and discloses a compound microbiological oxygenate for removing ammonia nitrogen in aquatic water and a preparation method of the compound microbiological oxygenate. The oxygenate is prepared from the following raw material components in parts by weight: 15-25 parts of zeolite powder, 10-15 parts of chlorite, 10-15 parts of citric acid, 15-20 parts of a powdery bacillus subtilis, photosynthetic bacterium and EM bacterium mixture, 5-15 parts of a proteolytic enzyme, 5-15 parts of silicate, 20-25 parts of sodium percarbonate, 5-10 parts of quicklime, 1-4 parts of ferrous sulfate, 3-5 parts of dextrin, 3-5 parts of starch slurry and 15-20 parts of a protective agent. The oxygenate disclosed by the invention is suitable for sterilizing, oxygenating and preventing and treating diseases in aquiculture and can be used for improving the water quality, reducing the ammonia nitrogen content in a water area, improving the water level transparency, improving the substrate and purifying water.

The invention provides plant culture soil. The plant culture soil comprises, by weight, 20-36 parts of chicken manure, 10-48 parts of pig manure, 100-300 parts of potassium nitrate, 20-120 parts of fibrous bodies, 50-88 parts of calcium chloride, 46-97 parts of magnesium sulfate, 44-118 parts of monopotassium phosphate, 28-46 parts of ferric salt, 8-10 parts of decavitamin, 250-350 parts of agar, 2-5 parts of beer paste, 0.1-1 part of Chinese photinia leaf, 2-6 parts of water-retaining agents, 90-110 parts of potatoes, 40-60 parts of carbon powder and 11-22 parts of bean pulp. The invention further provides a processing method of the culture soil. The plant culture soil has good water and fertilizer retaining performance and high water and air permeability, the pH value of the culture soil can be stabilized, and a certain inhibition effect on reproduction of pathogenic bacteria is achieved; the processing method of the culture soil is simple, and industrialized production is easily realized.

The invention relates to a chemical mechanical polishing solution for large-sized silicon wafers and a preparation method thereof, and the chemical mechanical polishing solution is mainly applied to the ultraprecision machining of large-sized semiconductor silicon substrate slices, and can obtain a nanometer-level ultrasmooth surface. The polishing solution consists of the following components inpercentage by weight: 5 to 50 percent of silicon dioxide abrasive, 1 to 10 percent of pH value regulator, 0.01 to 5 percent of surfactant, 0.01 to 0.05 percent of cleaning auxiliary, 0.01 to 2 percent of chelator and the balance of deionized water; and the silicon dioxide is added in the state of silicasol. Under proper polishing technological conditions, the polishing solution prepared with the components according to the contents can obtain a high-quality polished surface and meet the requirement of the semiconductor industry on the surface quality and removal rate of silicon substrate slices, and moreover, the invention has the advantages of low cost, easy cleaning, low corrosiveness and the like, and has a good application prospect.

The invention relates to a mutton sheep feed and a preparation method of the mutton sheep feed. The mutton sheep feed is composed of the following raw materials in parts by weight: 16% of alfalfa, 5% of maize germ meal, 8% of vinasse DDGS (Distillers Dried Grains with Soluble), 15% of corns, 10% of wheat middling, 15% of rice bran, 10% of bran, 10% of soya bean meal, 7% of rapeseed meal and 4% of a premixed feed; all the qualified raw materials are sequentially received, crushed and mixed and are granulated by a feed grain pressing machine; finally, a finished product is obtained by quantitatively packaging after steps of cooling, drying and checking to be qualified. The feed is enriched with nutrient substances needed by each growth and development phase of mutton sheep; the feed is good in palatability and suitable in concentrate-roughage ratio; the feed is capable of enabling the pH (Potential of Hydrogen) value of rumens of the mutton sheep to be relatively stable; the digestion functional disorder is effectively prevented and the feed conversion rate is greatly improved; the daily gain of the mutton sheep is increased by more than 10% after the mutton sheep eat the feed and the cost of the feed is reduced by more than 15%.

The invention discloses heat-stress-resistant fermented feed for a laying hen. The heat-stress-resistant fermented feed is prepared from the following raw materials: corn, soybean meal, cottonseed meal, apple pomace, chili meal, corn steep liquor sprayed corn husk, wheat bran, bacteria liquid, compound premixed feed and water, wherein the bacteria liquid is prepared from enterococcus aureus, bacillus subtilis, saccharomyces cerevisiae, brown sugar and water. The preparation method of the heat-stress-resistant fermented feed comprises the following steps: crushing the raw material, mixing the dried material, preparing the bacteria liquid, secondarily mixing the wet feed, and conducting anaerobic fermentation. The heat-stress-resistant fermented feed disclosed by the invention has the following benefits: the main essential nutrients in the fermented feed are approximate to that of complete feed for the laying hen and comprise active beneficial bacteria, gamma-aminobutyric acid, organic acid and other active factors; the feed can be added to the daily ration of the laying hen based on the rate of 5-15% to obviously improve the laying rate of the laying hen, the feed-gain ratio, the broken egg rate and the oxidation resistance, synergistically give play to multiple action of the beneficial bacteria on microecologic control to bacterial flora in the gastrointestinal tract, nerve regulation to the central nervous system by the neurotransmitter, and buffering of the organic acid to respiratory alkalosis due to high temperature, and obviously resist against the heat stress due to high temperature in summer for the laying hen.

The invention discloses a stool sample preservation liquid, a preparation method and application thereof. Specifically, the stool sample preservation liquid contains: 45 vol%-60 vol% of a fixing agent; 0.1 mass%-15 mass% of a fixing agent adjuvant; 0.01 mass%-1.5 mass% of an anticoagulant; 10 vol%-15 vol% of a buffer solution; 0.01 mass%-1 mass% of an ionic strength maintenance agent; 0.01 vol%-0.5 vol% of a nonionic detergent; and the balance water. The stool sample preservation liquid provided by the invention has the characteristics of easy preparation and low cost, can preserve stool samples at room temperature, also can effectively inhibit DNA degradation and cell damage of stool samples, maintain cell shape, and can preserve samples for a long time, and the preserved samples have high qualification rate during reutilization.

The invention discloses an organic electrolyte comprising the following components in percentage by weight: 2%-5% of lithium chloride, 5%-8% of gamma-butyrolactone, 2%-5% of ethylene glycol, 0.1%-10% of phenyl surface active agent and balance of absolute ethyl alcohol. The invention also discloses a method for extracting non-metallic inclusions from steel. The method comprises the following steps: preparing the electrolyte, sleeving a microporous cellulose acetate plastic bag on the periphery of a steel sample to electrolyze the steel sample, and separating the inclusions in ultrasonic vibration and vacuum filtration manners. The organic electrolyte is environmentally friendly and low in toxicity. By utilizing the organic electrolyte, body injury to operation staff is obviously reduced, electrolysis time is shortened by accelerating electrolysis through an external magnetic field, the problem that a large number of iron and inclusions of iron and inclusions are difficult to be separated from the anode mud is overcome, and the non-metallic inclusions are accurately and roundly extracted with use of the cellulose acetate plastic bag.

The invention relates to a preparation method of a pharmaceutical compound, in particular relates to a preparation method of cefazolin sodium. The preparation method provided by the invention comprises the following steps: step 1, synthesizing TDA (toluene diamine); step 2, synthesizing cefazolin; and step 3, synthesizing cefazolin sodium.

The invention discloses a solidifying agent of repairing a high-concentration multiple heavy metal polluted site. The solidifying agent consists of the following components in percentage by weight: 60-80% of modified powdered rock phosphate and 20-40% of light calcined magnesia. The invention further discloses a preparation method of the solidifying agent. The preparation method comprises the following steps: S1, preparing the modified powdered rock phosphate: uniformly mixing powdered rock phosphate, attapulgite and ferric chloride to form a mixture, then, mixing the mixture with acetic acid buffer liquor to form a first gel-like precipitate and drying and crushing the first gel-like precipitate to prepare the modified powdered rock phosphate; S2, preparing the solidifying agent: uniformly mixing the modified powdered rock phosphate and light calcined magnesia to form mixed powder, mixing the mixed powder and phosphate buffer to form a second gel-like precipitate, and drying and crushing the second gel-like precipitate to prepare the solidifying agent. The invention further discloses an application method of the solidifying agent. The solidifying agent has a good fixing effect to the high-concentration multiple heavy metal polluted site.

The invention discloses total mixed pellet feed for meat sheep and a manufacturing method and application of the feed. The feed comprises: 20.00-40.00% of straw, 0.00-30.00% of caragana korshinskii, 0.00-30.00% of sunflower shells, 0.00-30.00% of leymus chinensis, 10.00-30.00% of corn, 5.00-10.00% of molasses, 5.00-8.00% of soybean meal, 0.00-10.00% of cottonseed meal, 0.00-5.00% of sesame meal, 0.00-15.00% of maize germ meal, 0.00-5.00% of rapeseed meal, 0.00-8.00% of corn bran with slurry, 0.00-3.00% of wheat bran, 0.00-5.00% of rice bran, 0.00-20.00% of corn distiller's dried grains with soluble, 0.00-3.00% of bentonite, 0.40-0.80% of salt, 0.10-0.50% of calcium hydrogen phosphate, 0.50-1.50% of stone flour, 0.00-0.80% of slow-release protein, 0.50-1.50% of sodium bicarbonate, 0.04-0.08% of a mildew inhibitor, 0.40-0.50% of ammonium chloride, 1.00-3.00% of Chinese herbal medicine premix and 0.80-1.50% of meet goat fattening premix. The feed can replace common refined feeding and roughage, the breeding process is simplified, the breeding cost is saved, and the total mixed pellet feed can prevent the occurrence of rumen acidosis and urinary calculus of meet sheep.

The invention relates to a strain of bacillus cereus SC2 with the collection number of CGMCC No.3836. The strain of the bacillus cereus SC2 has an obvious water purifying function, three days after sewage is treated by the bacillus cereus SC2 strain, the removal rates of the ammonia nitrogen, nitrite nitrogen and chemical oxygen demand (COD) in the sewage are 70.15%, 94.12% and 43.12% respectively, the pH value in the sewage is stabilized, the dissolved oxygen in the sewage is increased, and the immunity and disease resistance of aquatic animals are enhanced, so that the healthy development of the aquaculture industry is promoted.

The invention discloses a preparation method for a fluidized bed catalyst. The preparation method comprises the following steps: (1) adding reaction liquid into an impinging stream reactor, enabling the reaction liquid to reach the bottom of the impinging stream reactor, heating and starting a stirring paddle at the bottom; (2) respectively injecting an alkali metal aluminate aqueous solution and CO2 gas flow through an acceleration pipe at the upper part of the impinging stream reactor, performing gas-liquid impinging stream reaction on the alkali metal aluminate aqueous solution subjected to atomization and the CO2 gas flow to generate an aluminum hydroxide crystal nucleus entering a settling region; (3) at the end of the gas-liquid impinging stream reaction, simultaneously and continuously adding an acidic aluminum salt aqueous solution and the alkali metal aluminate aqueous solution or an alkaline settling agent from feed inlets II and III, adjusting the pH value, and performing neutral reaction; (4) performing aging, filtering, washing and drying to obtain aluminium oxide dry glue; (5) uniformly mixing the aluminium oxide dry glue, small-hole SB powder and sesbania powder, adding an adhesive to form a plasticizer, performing extrusion and forming, drying and roasting to obtain an aluminum oxide carrier, immersing active metal, drying and roasting to obtain the fluidized bed catalyst. The impinging stream reactor is adopted in the method, so that the transfer characteristic between the gas phase and the liquid phase as well as between one liquid phase and another liquid phase is enhanced, so that the prepared fluidized bed catalyst is high in intensity and low in abrasion; furthermore, the pore volume and the aperture of the catalyst are larger.

The invention relates to a preparation method of mesoporous silica fluorescent nanoparticles for pH ratio probes, which comprises the following steps of: firstly adopting silane coupling agents for carrying out pre-modification on a binary fluorescence resonance energy transfer dye; then, by using a sol-gel chemical principle and the self assembling behavior of silicon materials and surface active agents used as structural guide agents in solution, obtaining the spherical mesoporous silica fluorescent nanoparticles through the co-hydrolyzation fasculation between the silane coupling agents and silicon source precursors. Compared with the prior art, the preparation method has the advantages that the obtained mesoporous silica fluorescent nanoparticles have the single-wavelength exciting pHratio fluorescent probe function, the pH detection limit and the detection range can be regulated and controlled through changing the proportion among the binary fluorescence resonance energy transfer dyes, and in addition, guest molecules can be loaded at high capacitance because the system has good mesoporous structures and biocompatibility.

The invention relates to a micro-polluted surface water treatment method based on a bio-membrane reactor. A ceramic carrier water pump is employed for driving a baffle-plate internal-circulating bio-membrane reactor to performing denitrification, dephosphorization and / or organic substance removal to micro-polluted surface water. A separation plate is arranged in the bio-membrane reactor to separate the interior of the reactor into an oxygen dissolving zone at the upper part and a bio-degradation zone at the lower part, wherein the oxygen dissolving zone is communicated with one end of the bio-degradation zone while the other end of the bio-degradation zone is communicated with a circulation pipe through a circulation pump, so that waste water to be treated flows through the oxygen dissolving zone and the bio-degradation zone continuously. A plurality of flow guide boards are vertically arranged in the bio-degradation zone at interval and are arranged in a high-low interlaced manner, thereby forming a channel in which solution can flow in a vertical baffled manner in the reactor. The flow guide boards are used as a carrier of a bio-membrane. Compared with a reactor in the prior art, by means of the reactor, ammonia nitrogen and total nitrogen in polluted river water are removed well and a certain removal effect on total phosphorus and organic substances in water is achieved too.