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

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 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 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 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 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.