75results about How to "Little change in pH" patented technology

The invention discloses a composite HBF (Honess Hybrid Biological&Fixed film Technology) module reactor which comprises an anaerobic pool, an anoxic pool, an aerobiotic pool and an SBR (Sequencing Batch Reactor) pool, wherein the SBR pool comprises a first SBR pool and a second SBR pool which are connected with the aerobiotic pool at the same time. The aerobiotic pool, the first SBR pool and the second SBR pool are internally provided with enzyme floating fillers, respectively. The anaerobic pool, the anoxic pool, the aerobiotic pool, the first SBR pool and the second SBR pool are module members. The invention further provides a sewage treatment process. Based on AAO-SBR (Anaerobic-Anoxic-Oxic-Sequencing Batch Reactor), the aerobiotic pool, the first SBR pool and the second SBR pool are internally provided with enzyme floating fillers respectively as biological attaching carriers, so that the biomass of the reactor is more than 2 times of that by an activated sludge process in volume, thereby greatly enhancing the processing capacity of the reactor and simplifying the structure of the reactor.

The invention provides a method and device for treating an organic pollutant in water of a tetramino iron ligand catalyst-strong alkali resin compound system and belongs to the field of water pollution control. The method is coupled with strong alkali resin to provide an alkali environment, the catalytic activity of a tetramino iron ligand catalyst in a neutral and acidic water body is improved. Under the optimization conditions, the effect of removing compound organic pollutants can be up to 31-99%, and the rate of removing fenamiphos, fenthion, bisphenol A, nonyl phenol and other pollutants is close to 100%. The invention discloses a tetramino iron ligand catalyst-strong alkali resin combination technology and device. The catalytic activity of the tetramino iron ligand catalyst is improved, a pH application range of the catalyst is widened, a treatment effect is remarkable, the pH change of a water sample is small, the catalyst is environment friendly and has corrosion to equipment, a process is simple, the catalyst dosage is small, and the input cost is low. Therefore, the compound technology has good economic and environmental benefits.

The invention relates to an injection moldable bone repair composite material and a preparation method and a using method thereof. The composite material is a powder material consisting of a copolymer of multiple amino acids and a sulfate component of calcium, the sulfate component of the calcium accounts for 60-95% of total weight of the component material, and the balance is the copolymer of the multiple amino acids. The sulfate component of the calcium comprises alpha-hemihydrated calcium sulfate which accounts for 15%-60% of the total weight of the composite material and the balance of other sulfates of the calcium. The copolymer of the multiple amino acids is formed by polymerizing epsilon-aminocaproic acid and at least two types of other amino acids, and the molar ratio of each amino acid in the other amino acids is not less than 1% of the total weight of the amino acids. When in preparation, an intermediate parent body is obtained by in-situ polymerization and composition of other sulfates of the calcium and the amino acid monomers under inert gas protection and heating, and the composite material is prepared by smashing and then being composed with the alpha-hemihydrated calcium sulfate. The composite material powder is mixed with curing liquid, and then the composite material can be used by injection. The composite material can be fast molded after the injection and has the strength which is equivalent to that of cancellous bone, good biocompatibility and adjustable degradation speed, thereby being applicable to fixation and repair of clinical orthopedic complicated and irregular traumas.

The invention relates to a low-cost low-acyl transparent type gellan gum extraction process which specifically comprises the following steps: (1) performing enzyme treatment; (2) performing centrifugal decontamination; (3) dissolving; (4) performing deacylation; (5) filtering; (6) chelating; (7) performing solid-liquid separation; (8) performing drying and crushing; and (9) treating wastes. The low-cost low-acyl transparent type gellan gum extraction process is gentle in process conditions, the pH value is relatively small in fluctuation in product treatment, no polyvalent metal ion is used in the process, and meanwhile due to a proper amount of chelating agent, a good dissolving property of a product is ensured; according to the process, no lower alcohol is adopted for washing gellan fiber, so that the production cost is greatly lowered, the treatment conditions are gentle, and the product quality is improved.

The invention relates to a preparation method of an acanthopanax senticosus extract, and the acanthopanax senticosus extract prepared by the preparation method and a preparation comprising the acanthopanax senticosus extract. The preparation method comprises the following steps: acanthopanax senticosus water decocted extract paste prepared by water extract of an acanthopanax senticosus medicinal material is precipitated by alcohol, then pass through macroporous resin for adsorption and elution, eluent is concentrated, then again precipitated by alcohol, and is refined to obtain the acanthopanax senticosus extract; the refining method comprises use of DM1180 resin for adsorption, elution and secondary ultrafiltration of the eluent. The method provided by the invention can significantly reduce the content of impurities and especially nonpolar invalid impurities in the acanthopanax senticosus extract, improve the purity of effective components in the acanthopanax senticosus extract and security and stability of the acanthopanax senticosus extract, can reduce energy consumption, greatly improves the extract yield, is superior in effect compared with the method in the prior art, and has great application prospect and market value.

The invention relates to a urethrotropin freeze-dried powder injection and a preparation method thereof. In every 1 mg freeze-dried powder injection: the active ingredient is 60-200 units based on the titer of follicle-stimulating hormone, and the auxiliary materials are L-arginine, The composition of mannitol and phosphate buffer salt is 4-8:20-40:2.0-6.0 according to the weight ratio. The formula of the present invention prevents the urea gonadotropin from existing in the aqueous solution state for a long time in the preparation process, reduces the freeze-drying time, and increases the stability of the urea gonadotropin freeze-dried powder injection.

The invention relates to a nickel-free ferrous tin-cobalt alloy plating solution and a process for utilizing the plating solution for electroplating. The plating solution comprises the following compositions: 0.2 to 6 g / L of tin, 0.6 to 4 g / L of cobalt, 8 to 180 g / L of complexant, 2 to 20 g / L of melanizing agent and 50 to 320 g / L of pH buffer. The parameters of the plating solution are as follows: the Baume of the plating solution is between 10 and 25 baume degrees; the temperature is between 28 and 48 DEG C; and the pH is between 10 and 13. The coating of the nickel-free ferrous tin-cobalt alloy plating solution is an alloy layer taking the tin as a main material, and a small amount of cobalt is added into the coating to form a binary alloy system; the cobalt content in a general ferrous tin-cobalt alloy plating solution exceeds 8 g / L, but the novel electroplating process can reduce the cobalt content to 0.8 g / L; and due to adoption of the special biodegradable stable complexant and the special biodegradable pH buffer, the production cost can be reduced, novel EU standards can be reached simultaneously, and various problems of the prior ferrous tin-cobalt alloy plating solution and the prior process can be solved.

A portable fluorescent probe detector of pesticide residue is composed of optical unit, detection and data processing system as well as power unit. it is featured as forming optical unit by light source, filter, detector and photoelectric tube; setting excitation light filter and photoelectric tube in sequence on light source light path; setting fluorescent filter between excitation light filter and photoelectric tube; setting detector on coaxial after fluorescent filter; connecting detector to amplifier, power to light source and detector; Data processing unit to amplifier and photoelectric tube as well as to display.

The invention discloses a coupling type biological denitrification method which comprises the following steps: enabling sewage to enter a front-end anoxic pool, mixing with returned sludge and mixed liquid and carrying out denitrification reaction; entering an aerobic pool, removing an organic matter through aeration, realizing the nitration reaction and synchronizing the nitration reaction and the denitrification reaction; entering a rear anoxic pool and carrying out denitrification reaction again; and alternately entering a first SBR (Sequencing Batch Reactor) pool and a second SBR pool, treating a surplus carbon source generated in the denitrification or deeply nitrating and simultaneously carrying out sludge return. The invention also provides a coupling type biological denitrification system. The coupling type biological denitrification method and the coupling type biological denitrification system have the beneficial effects that pre-denitrification plus aerobic denitrification and CODcr degrading plus post-denitrification plus sequencing batch aerobic reaction are adopted to overcome the influence of an excessive denitrification carbon source on outlet water, the nitrogen removal efficiency is greatly improved, the nitrogen removal effect is remarkable, and the coupling type biological denitrification system is suitable for degrading high ammonia nitrogen and high COD (Chemical Oxygen Demand) wastewater and particularly has an remarkable effect on coal chemical industry wastewater treatment.

The invention discloses dendrobium candidum test-tube seedling rooting medium and a preparation method thereof. The rooting medium comprises the following materials: minimal medium, 0.1-0.5 mg / L NAA, 0.4-1.0 g / L activated carbon, 100 g / L banana puree, 50 g / L mashed potatoes, 20 g / L white granulated sugar, and 5 g / L agar powder. The preparation method for the rooting medium comprises the following steps: preparing minimal medium; weighing components according to the formula of the rooting medium; preparing weighed bananas and potatoes into paste; adding water for boiling; cooling to indoor temperature; mixing the components of the prepared minimal medium, weighed NAA, activated carbon, white granulated sugar and agar powder; mixing the prepared components for constant volume; adjusting pH value to 5.9-6.0; conducting sterilization; carrying out cooling; conducting solidification; obtaining the rooting medium. The rooting medium is prepared by the components and the preparation method; cultured dendrobium candidum rooting seedlings are more stable in quality; a rooting cultivating period can be shortened to 1.5-2 months; turnover efficiency of a tissue culture room is improved by more than 30%.

The invention belongs to the field of cobalt and nickel separation recycling, and particularly relates to a cobalt and nickel extraction separation method capable of reducing coextraction. The separation method sufficiently combines the characteristics and needs of cobalt and nickel extraction and separation, a buffer action mechanism is used for maintaining the water phase pH to be within the optimal pH range of cobalt rather than the optimal pH range of the nickel in the cobalt and nickel extraction process, meanwhile, key process parameters in the extraction process are controlled and adjusted, the buffer capacity of a buffer solution is maintained, the coextraction of nickel is reduced, and the technical problem that during cobalt and nickel extraction and separation in the prior art,due to the fact that in the extraction process, pH of liquid rises, nickel co-extraction is serious, and finally, the cobalt and nickel separation efficiency is reduced is solved.

The invention belongs to the field of pharmaceutical preparations, and particularly relates to a novel injection of an adenosine A2A receptor agonist Regadenoson and a preparation method of the injection. The Regadenoson injection is prepared from the main drug Regadenoson, a cosolvent, an antioxidant, a stabilizer and an isoosmotic adjusting agent, wherein the cosolvent is selected from L-histidine or a combination of L-histidine and other amino acid, the stabilizer is selected from a combination of tris-hydroxymethyl aminomethane and hydrochloric acid, and sodium chloride is preferably selected as the isoosmotic adjusting agent. According to the injection, propylene glycol and phosphate buffer salt are prevented from being used, a surfactant solubilizer is not adopted, the formula and the process are simple, the injection is suitable for industrialized large-scale production, and the stability is significantly improved after high-temperature sterilization and long-term storage.

The invention belongs to the field of pharmaceutical preparations, and relates to a phloroglucinol injection and a preparation method thereof. The phloroglucinol injection comprises the following mainactive pharmaceutical ingredients: phloroglucinol, trimethylphloroglucinol, an osmotic pressure regulator sodium chloride and water for injection. The preparation method is mainly characterized in that carbon dioxide is used as a stabilizer, so that the use of an antioxidant is avoided, the pH value of the solution is reduced, the stability of the solution is improved, the prescription process issimplified, and the phloroglucinol injection with stable content, slow impurity growth and long validity period is obtained.

The invention relates to a method for removing metal ions from titanium white waste acid with chelating agent, in particular to a dealing method for waste acid when producing titanium white. The method of the invention manufactures the products via simple procedures of chelating reaction and filtration. The invention has the advantages of simple method, simple device, large dealing capacity, high removal rate of metal irons, low cost and the like and is convenient to popularize and apply. The invention can be widely applied in removing metal ions from industrially producing waste acid, and is especially suitable for removing metal ions from titanium white waste acid.

The invention relates to the technical field of wet metallurgy zinc recovery, in particular to a comprehensive recovery method of a material with high chlorine and low zinc. The comprehensive recoverymethod of the material with the high chlorine and the low zinc comprises the step that after the material with the high chlorine and the low zinc is subject to oxidizing roasting, dilute sulphuric acid leaching, ammonium sulfate salting-out crystal, sulphation roasting, hot water dissolution and purification and impurity-removing, more than 99% of chlorine removes from the material with high chlorine and the low zinc, the enrichment of the zinc content can reach more than three times, recovery of metal zinc is facilitated through leaching and electrolysis, and the effect of low cost, high efficiency and obvious economic and social benefits is achieved.

The invention discloses a composite water-treatment coagulant prepared from high-iron gibbsite and a preparation method thereof. The composite water-treatment coagulant is an aluminum chloride molten iron treatment coagulant, aluminum sulfate molten iron treatment coagulant or polyaluminum chloride molten iron treatment coagulant, which is respectively prepared from high-iron gibbsite, technical hydrochloric acid and water, or high-iron gibbsite, technical hydrochloric acid, water and calcium aluminate powder, or high-iron gibbsite, commercial sulfuric acid and water. The invention also discloses a preparation method of the composite water-treatment coagulant prepared from high-iron gibbsite. The composite water-treatment coagulant has the advantages of wide raw material sources, high iron content, high stability, wide water treatment range, favorable turbidity removal effect, simple preparation method, no need of roasting in the production process, no wastewater or waste gas emission and no environmental pollution.

The invention provides a special medicament for removing hardness ions in underground water. The medicament comprises sodium hydroxide, powdery kaolin and polyaluminum chloride. A preparation method for the special medicament has the advantages of easiness, wide sources of raw materials and low cost; the special medicament is safe to use, can realize rapid and highly efficient precipitation of calcium carbonate and magnesium hydroxide sediments, has a fast treatment speed and a good treatment effect in treatment of hardness ions in underground water and has good application prospects.

The invention relates to a microbiological treatment method for scraps produced by fireworks and crackers which are set off during spring festival. The method comprises the following steps: pulping, carrying out microbiological treatment, and carrying out separation of impurities, thereby obtaining paper pulp with relatively high quality, waste liquor rich in metallic elements such as aluminum, copper and magnesium as well as waste residue with relatively low heavy metal content; and the scraps produced by the fireworks and crackers which are set off are relatively low in content of unburned active metals and heavy metals with inhibiting effect on microbial activity, so that pH value of solution changes slightly in an extraction process of the microbiological treatment method, microbial reaction can be continuously and efficiently carried out, the whole technological process is shortened, and microbiological leaching efficiency is improved. The microbiological treatment method providedby the invention is simple in technology and low in cost, less wastewater is produced, recovery utilization rate is high, the leaching rate of copper, aluminum and magnesium can reach more than 60%,and the highest leaching rate can reach 100%.

A microbial treatment method of scraps from firework-firecracker set-off comprises the steps of pretreating, pulping, microbial treatment, impurity separation and the like; high-quality pulp and wasteliquid that is rich in aluminum, copper, magnesium and other metal elements are obtained, as well as waste residue having low heavy metal content; scraps from firework-firecracker set-off has a low content of non-combusted active metals and heavy metals inhibitory for microbial activity, solution pH during extracting in the method has a small change, microbial reaction can occur efficiently and continuously, the whole technical process is shortened, and microbial leaching efficiency is improved. The method of the invention has simple process and low cost, produces little wastewater, and has high recycling rate, and leaching rate for copper, aluminum and magnesium is 70% and above, up to 100%.

The invention belongs to the field of agricultural planting technologies and discloses a fruit-vegetable nutrient solution for soilless culture. The fruit-vegetable nutrient solution comprises 1000-1080 mg / L Ca(NO3)2.4H2O, 300-320 mg / L KNO3, 125-140 mg / L KH2PO4, 380-400 mg / L MgSO4.7H2O, 24-32 mg / L EDDHA-Fe, 2-2.5 mg / L MnSO4.H2O, 0.2-0.3 mg / L ZnSO4.7H2O, 2.5-3 mg / L Na2B4O7.10H2O, 0.05-0.1 mg / L CuSO4.5H2O, 0.01-0.03 mg / L Na2MoO4.2H2O and the balance water. The fruit-vegetable nutrient solution provided by the invention overcomes the defects that fruits and vegetables are iron deficient and thatacidities and alkalinities of the existing nutrient solutions vary greatly. Meanwhile, the fruit-vegetable nutrient solution has wider application range and better nutritional effect.

The invention discloses a medicament, in particular a medicament used for reducing the water content of the sludge. The medicament used for reducing the water content of the sludge consists of the following components in portion by weight: 3 to 5 portions of MgO, 0.3 to 0.8 portion of KH2PO4, 0.2 to 0.4 portion of Al(H2PO4)2, and 0.3 to 0.8 portion of anhydrous MgCl2. The medicament has the advantages that: (1) the medicament has abundant, cheap and easily obtained raw material sources, and lower cost; (2) the medicament has a low dosage and less change to the pH value of the sludge, and simultaneously inhibits the generation of odor; (3) the medicament does not bring about secondary pollution to the sludge, improves the properties of the sludge, and promotes the stabilization of the sludge; (4) the sludge with a reduced water content can be directly used for preparing a fertilizer through granulation, and the fertilizer does not harm the soil and crops; and (5) the compression strength and the shear intensity of the treated sludge both reach the operating requirements of a large-scale sludge landfill machine.

The invention discloses still and stomach-nourishing soda water. The soda water is prepared by adopting haws, jujubes, pseudostellaria roots, acesulfame potassium, sodium bicarbonate and lemon essenceas raw materials and through the separate steps of performing extraction and purification, blending materials, performing filtration, performing sterilization, performing filling, etc. The still andstomach-nourishing soda water provided by the invention is applicable for different groups of people for long-term consumption, has a good taste, has no precipitation which causes solution delamination in the storage process, does not have the phenomena of rancidity and deterioration in the shelf life, has a qualified microbial limit, has a relatively small pH change which is just 0.02 during thestorage process and has a long shelf life of 12 months. The preparation process is simple and practical, has a relatively broad market prospect and is worthy promoting and applying.

The invention belongs to the technical field of biomasses, particularly provides a method for preparing 5-hydroxymethylfurfural by utilizing biomass sugar. The method comprises the following steps of taking biomass sugar as a raw material, catalyzing the raw material under a water phase condition in acid, neutral or alkali buffering systems, and obtaining 5-hydroxymethylfurfural. The method provided by the invention is applicable for multiple kinds of raw material sugars, the wide of the initial concentration of the sugar is wide, the heating way is flexible, the temperature range is wide, and the buffering system is versatile; and moreover, the operation is simple and convenient, the equipment is simple, the energy is saved, the post-treatment is convenient, and the rate of conversion and selection are higher. 5-hydroxymethylfurfural is one of the important platform compounds capable of being obtained from biomasses to substitute the petrochemical products, can perform oxidation reaction, reduction reaction, halogenation reaction, polyreaction and the like, and also can be used as the intermediate for fine chemistry industry, pharmacy and furyl polymer, thereby having great economic value and wide application prospect. The method provided by the invention can realize large-scale industrialization production.

The present invention provides a microbiological treatment method for sweeps mainly composed of waste produced by fireworks and crackers. Through pretreatment, pulping, microbiological treatment and impurity separation steps, pulp with high quality, liquid waste rich in metallic elements such as aluminum, copper and magnesium, and waste residue with a lower content of heavy metal are obtained. According to the sweeps produced by fireworks and crackers, contents of unburned active metal and the heavy metal inhibiting microbial activity are few, so that variation of the solution pH value duringan extraction process of the method is little, microbial reaction can be performed continuously and efficiently, and therefore the whole technological process is shortened, and microbiological leaching efficiency is improved. The method is simple in technology and low in cost, the produced water waster is little, recovery rate is high, and leaching rates of cooper, aluminum and magnesium can reachmore than 70% up to 100%.

The invention discloses a method and device for treating urban domestic sewage at a low-temperature environment. According to the method, sewage treatment is completed together by a microelectrolysis column and a sequencing batch reactor; iron ion flocculation which is generated from sewage in the microelectrolysis column by means of oxidation-reduction, and is used for preventing sludge in the sewage from expanding at a low temperature, and the adsorbability of iron ion flocculation on organic matters, nitrogen, phosphorous and other pollutants in the sewage and the sewage settling performance can be improved; and after the iron ion flocculation and sewage enter the sequencing batch reactor, through the ion transferring effect of the iron ion flocculation, growth and biochemical activities of microorganisms in the activated sludge under a low-temperature condition can be improved, and the biochemical treatment capability is enhanced. The method and device can be used for well solving the requirement for urban domestic sewage treatment at a low-temperature climatic environment which lasts more than 3 months every year in northwest regions of China.

The invention provides heavy metal scavenger for synthesizing antimony in printing and dyeing wastewater by resource utilization of high-aluminum sludge in the petrochemical industry. The heavy metalscavenger is characterized by being prepared from a component A, a component B and a component C, wherein the component A comprises high-aluminum sludge and activated carbon, and dosage of the activated carbon is not higher than 20 percent of total weight of the component A; the component B is prepared from the following components in parts by mass: 5-30 parts of polypyrrole and 1-15 parts of an alkaline agent; the component C is organic sulfide; the mass ratio of the component A to the component B is 1:(0.1-10); and the mass ratio of the component C to the polypyrrole is 1.5-2.1. When the pHvalue of the printing and dyeing wastewater is 8-8.5, the heavy metal scavenger can be directly dosed without adjusting the pH value, and the pH value is little changed after treatment, the wastewatercan be drained without callback. The heavy metal scavenger does not contain iron salt, and cannot cause secondary pollution on the membrane system of recycled water.

The invention belongs to the field of separation and recovery of cobalt and nickel, and more specifically relates to a method for extracting and separating cobalt and nickel that reduces co-extraction. This separation method fully combines the characteristics and requirements of cobalt-nickel extraction and separation, and proposes to use the buffer mechanism to maintain the pH of the aqueous phase in the cobalt-nickel extraction process in the optimal pH range of cobalt instead of the optimal pH range of nickel, and at the same time, the extraction process Control and adjust the key process parameters in the medium, maintain the buffering capacity of the buffer solution, and reduce the co-extraction of nickel, thereby solving the problem of severe nickel co-extraction due to the increase in the pH of the feed solution during the extraction process of the existing technology when extracting and separating cobalt and nickel, which eventually leads to Technical problem of reduced cobalt-nickel separation efficiency.

The invention discloses an activation solution used before Mg-Zn alloy plating and a manufacturing method. Oil removal treating fluid comprises following components including, by weight percent, 8 to10% of sodium sulfite, 3 to 5% of sodium hypochlorite, 4 to 6% of N,N-dimethyldodecylamine-N-oxid, 5 to 7% of ammonium chloride, 4 to 6% of sulfur trioxide, 5 to 7% of bentonite, 2 to 3% of lime, 1 to3% of lauramidopropyl betaine, 1.5 to 2.5% of lauroyl diethanolamide and the balance water.

The invention belongs to the field of marine organisms, and particularly relates to a method for removing algae and enteromorpha on a porphyra yezoensis cultivation web curtain. The porphyra yezoensis cultivation web curtain with the algae and the enteromorpha is put into an acid solution to be soaked and then placed into natural seawater for recover, accordingly, the enteromorpha can be removed (dead), and growing of porphyra yezoensis is not influenced. According to the method, operation is easy, the method is effective, the yield and quality of the porphyra yezoensis can be improved, and the economic benefits of the porphyra tenera industry are increased.