83 results about "High phosphate" patented technology

A method and system for planarizing or polishing a substrate, particularly a memory or rigid disk, are provided. The method comprises abrading at least a portion of the surface with a polishing system comprising (i) a polishing composition comprising water, an oxidizing agent, and about 0.04 M or higher phosphate ion or phosphonate ion, and (ii) abrasive material. The present invention also provides a system for planarizing or polishing a substrate comprising (i) a polishing composition comprising water, an oxidizing agent, and about 0.04 M or higher phosphate ion or phosphonate ion, and (ii) silica particles.

The invention provides a method for preparing vanadium oxide, which comprises the following steps of: mixing vanadium slag with calcium oxide or limestone to form a mixed material; roasting the mixed material to obtain calcified clinker; leaching the calcified clinker by using C2O4<2-> and 35-70 g / L of oxalate solution at 80-95 DEG C; after leaching, carrying out solid-liquid separation to obtain vanadium-containing leachate and residues; removing silicon from the vanadium-containing leachate, so that the silicon concentration in the vanadium-containing leachate is less than 0.1 g / L, then adding ammonium oxalate into the vanadium-containing leachate, adjusting the mol ratio of NH4<+> to TV to 2-3.5, precipitating ammonium metavanadate, and filtering to obtain ammonium metavanadate and vanadium precipitation wastewater; and oxidizing, roasting and deaminizing ammonium metavanadate to prepare vanadium pentoxide or reducing to prepare vanadium trioxide. According to the invention, on the premise of satisfying environment-friendly requirements, preparation of vanadium oxide from ordinary vanadium slag and high-calcium and high-phosphate vanadium slag is realized; furthermore, consumption of reagents can also be reduced; and the production cost is reduced.

The present invention relates to Glomus mosseae 93-6 as one kind of efficient drought-resisting and high phosphate-tolerant nutrients bush mycorrhizal fungus and its production process. The Glomus mosseae preparation is prepared with kaoliang as host plant, mixture of zeolite and sand as culture medium. The dried preparation contains 40-65 spores in each ml. Glomus mosseae may be grown in various kinds of plants to improve nutrients absorption, raise drought resistance and promote growth of plant. Test shows that the present invention has excellent seedling strengthening and yield increasing effect on straw berry, rice, water melon and other crops.

This invention provides a method of phosphorus removal in high-phosphate-content industrial wastewater and phosphorus resource recovery of high-phosphate-content industrial wastewater, solves the problems of phosphorus removal in industrial wastewater, domestic sewage and other types of sewage and phosphorus resource recovery, and is particularly applicable to the field of the high-phosphate-content industrial wastewater. The method comprises the following steps: uniformly mixing 0 to 0.5 part of inorganic electrolyte, 0 to 2.5 parts of a water-soluble high-molecular polymer, 5 to 10 parts of calcium hydroxide (or calcium oxide) and 87 to 95 parts of soluble calcium salt in percentage by weight to obtain an inorganic-organic composite phosphorus removal chemical reagent; and adjusting the PH value of the wastewater with acid and alkali, oxidizing non-orthophosphate ions in the wastewater with an oxidant to adjust the acidity of the wastewater, and adding the inorganic-organic composite phosphorus removal chemical reagent to precipitate the phosphorus in the wastewater. The total amount of phosphorus in the wastewater is reduced from about 15500 mg / L to 5 mg / L or below. The main component of a filter cake is hydroxyl calcium phosphate, and the phosphorus content reaches 15 percent or above; and the filter cake can be used for preparing phosphoric acid or phosphate fertilizer.

A reagent system comprises a first reagent which includes a high pH phosphate buffer, and a second reagent which includes luciferase, luciferin, a magnesium salt and an enzyme stabilizer. The second reagent has a low pH and a buffer with a pK which is near the optimum pH for activity of luciferase. The reagent system may be used in a process for measuring total adenosine triphosphate (ATP) and / or dissolved extracellular ATP, in a fluid containing microorganisms. The reagent system may also be used in a microbiological remediation or production process.

The invention relates to a novel phosphate removing and absorbing agent of active carbon fibre and lanthana (La) prepared by loading lanthana on the active carbon fibre substrate and a preparation method thereof. The phosphate removing and absorbing agent comprises the following components in percent by weight: 5.54-55.4% of lanthana and 94.46-44.6% of active carbon fibre. The method comprises the following steps of shearing the active carbon fibre into fine blocks, washing with deionized water for many times, dipping in a certain amount of deionized water, filtering, boiling and drying, then dipping the obtained active carbon fibre in a certain amount of lanthanum-containing salt solution, filtering and drying, placing the obtained solid in a muffle furnace, activating the solid at a proper temperature and then taking out to obtain the phosphate removing and absorbing agent of active carbon fibre and La. The novel phosphate removing and absorbing agent of active carbon fibre and La has the advantages of high phosphate removal rate, large absorption volume, high absorption rate, and the like.

Disclosed are a phosphate-binding polymer having a true specific gravity of 1.18-1.24, tablets that solely consist of the particles of a phosphate-binding polymer having an average particle size of no more than 400 μm, with at least 90% being occupied by particles no larger than 500 μm, and having a true specific gravity of 1.18-1.24 and a water content of 1-14%, or tablets that contain both the particles and crystalline cellulose and / or low substituted hydroxypropyl cellulose, and a process for producing such tablets. The phosphate-binding polymer can be formulated as tablets either alone or in combination with specified additives. Whichever the case, the tablets have satisfactory hardness, contain the active ingredient in high proportion, have high phosphate-binding capability and exhibit rapid disintegrability in an acidic to neutral region while having little sensitivity to the strength of agitation. The tablets are excellent pharmaceutical preparations that undergo reduced variations in bioavailability in spite of movements within the digestive tracts and pH changes.

The invention provides a bacillus amyloliquefaciens ZCM18 with broad spectrum growth-promoting and stress-resisting effects. The preservation No. of the bacillus amyloliquefaciens ZCM18 is CGMCC No.12959. The bacterial strain has higher phosphate solubilization and nitrogen fixation capability and capability of generating IAA, ACCD, siderophore and cytokinin; the tolerance of salinity can reach up to 5%; the bacillus amyloliquefaciens has higher antagonism to fusarium and rhizoctonia pathogenic bacteria and is suitable for the production of multifunctional bio-fertilizer, such as, disease prevention, growth promoting and salt and alkali resistance; the application scope is wide; the bacillus amyloliquefaciens is suitable for biological improvement of various soil (saline-alkali soil, degenerated soil and conventional cultivated land) and production of various plants (vegetables, grain crops and fruit trees); the bacillus amyloliquefaciens has obvious effects in boosting the root development, preventing and controlling root diseases, increasing the crop yield, and the like; the bacillus amyloliquefaciens is capable of reducing the dosage of chemical fertilizers and pesticides and is wide in application prospect.

The invention relates to a high-phosphate oolitic iron ore dephosphorization method. The raw ore is roasted at the temperature of between 400 DEG C and 800 DEG C after crushing, high intensity magnetic separation is carried out after ore grinding, and acid leaching is carried out to ore powder by using industrial sulfuric acid or industrial nitric acid or industrial hydrochloric acid with the proportion being: 4 percent to 10 percent of acid:90 percent to 96 percent of water; the soaking time is 1.5 to 5 hours; phosphorus is obtained by vibration cleaning ore powder by using ultrasonic waves with the frequency being 4000 hertz to 20 000 hertz and vibration time is 15 to 20 minutes, and then concentrates and middlings are picked out by using low intensity magnetic separation. The dephosphorization method has the advantages of low dephosphorization cost, simple dephosphorization technology and equipment and good dephosphorization effects.

The invention discloses a genetically modified efficient phosphate solubilizing engineering bacterial strain and an application thereof. The bacterial strain is bacillus amyloliquefaciens PS57H1 CGMCC No.6089, phosphate solubilizing bacteria PS57 are screened and obtained from plant rhizosphere soil to construct a complete expressing element containing glucose dehydrogenase (gdh) genes, and then the gene expressing element is electro-transformed into host bacteria PS57 to obtain the bacterial strain. According to experiments, the content of dissoluble phosphorus in a culture medium can reach up to 58.8mg / L when the bacterial strain is cultured in the inorganic phosphorus culture medium (main phosphorus is from indissoluble calcium phosphate with the phosphorus content of 5g / L) for 72 hours, so that the bacterial strain has high phosphate solubilizing effect and can be used as phosphate solubilizing bacteria to be applied to microbial fertilizer production.

The invention relates to a waste water treatment device which is a land treatment device applicable to slightly polluted river water treatment and treated water recycling, particularly to a bypass purification system for intensively treating slightly polluted river water. According to the bypass purification system, waste water sequentially flows through a nitrification section, a denitrification section and an adsorption dephosphorization section. The bottom of the denitrification section is filled with rotten wood as a controlled-release carbon source to solve the problem of insufficient denitrification carbon sources for the river water, so that the denitrification efficiency of the system to the slightly polluted river water is improved. The system is filled with packing with large specific surface areas, developed pores and good adsorption capacities, such as zeolite and cement bricks, so that the biological holding volume of the system is improved greatly, and high phosphate and nitrogen removing efficiencies are guaranteed. The bypass purification system has the advantages of being simple in structure, multiple in function, efficient, low in cost, easy to operate and manage, stable in operate, capable of achieving synchronous decarburization and dephosphorization and the like, treated water can be recycled directly, and the system can be combined with ecological construction and town afforestation functions.

The present invention relates to improved scheelite decomposing process and is especially one alkali pressure digestion scheelite decomposing process. The process includes three steps of the first pressure digestion, the second pressure digestion and phosphoric acid recovering. In the first pressure digestion, scheelite is first ground and then pressure digested together with high-phosphate Na2WO4 solution in a stirring pressure digestion reactor with solid-to-liquid weight ratio of 0.5-1.0, at temperature 120-160 deg.c and pressure 0.1-0.5 MPa for 0.5-1 hr, and the product is cooled to 50-80 deg.c, filtered to obtain low-phosphate Na2WO4 product and the first filtered slag. In the second pressure digestion, the first filtered slag is made to react with alkali and phosphoric acid in pressure reactor. In the phosphoric acid recovering, the second filtered slag is leached with concentrated sulfuric acid.

A flow wood processing extracting lignin from woody plant material and converting delignified cellulosic residue to crude bio-oils, that removes toxic preservative chemicals from waste timber, and provides conversion to useful or nontoxic forms. Wood is chipped and fed into a lignin extractor using ethanol at high temperatures to dissolve the lignin with counter current material contactors, heat exchangers, and a computer control system. Most of preservative chemicals likely precipitate out at this stage as a heavy sludge that can be removed. Ethanol containing dissolved lignin is removed from the lignin extractor, the dissolved lignin recovered, the ethanol recycled into the lignin extractor, and residual heat returned to the process. Delignified cellulosic pulp is removed from the lignin extractor and subjected to a milling to convert into a smooth sludge for entry to a bio-convertor by a super critical water process. The residue is prepared as a high phosphate fertilizer.

The invention relates to a strawberry culture medium, in particular to a special soilless culture medium for strawberries. According to the special soilless culture, an upper-layer medium is prepared by mixing green algae, spirogyra, zinc ash, manganese ash and silica fume, a middle-layer medium is prepared by mixing rotten wood, brewer's grains and apple pomace, and high-phosphate slag powder is taken as a bottom-layer medium. Waste is taken as a medium raw material, waste natural resources are sufficiently utilized, environmental pollution is reduced, the special soilless culture medium contains higher trace elements such as zinc, manganese and the like and meets the demands of strawberries for microorganism elements, the medium continuously and slowly releases nutritional ingredients in the planting process, accordingly, the phenomena of overnutrition at the earlier stage of strawberry planting and nutrition deficiency in the later planting period of the strawberries cannot be caused, the nutrition demand of the strawberries in the whole growth period is met, outside fertilization is not required in the culture process, all that is required is to meet the daily water demand, the medium can rapidly dredge water, microbial source germination of powdery mildew, gray mold and anthracnose is avoided, root growth of the strawberries can be promoted, a protective layer is formed on the surfaces of root systems, and the disease-resistant capability of seedlings is improved.

The invention discloses a collophanite reverse flotation collector and a preparation method and an application method thereof, and belongs to the technical field of solid mineral resource separation. Vacuum five-line phenol extract oil, a diluent, fuming sulphuric acid, sodium hydroxide and the like are used as raw materials, after raw oil and the diluent are mixed according to a certain mass percent, the fuming sulphuric acid is fed into a reaction still for sulfonation, stirring and washing are conducted after a sulfonation reaction is completed, still standing is conducted for layering, an organic layer is taken for primary saponification in a saponification reaction still, and sulphonate is obtained; and the obtained sulphonate and soy acid are compounded into a mixture according to a certain mass percent, the mixture is subjected to secondary saponification, and the anionic high-calcium (high-magnesium) collophanite reverse flotation collector is obtained. The collector is simple in preparation process, high in adaptability (such as the temperature and the ore pulp pH), good in mud resistance, high and stable in flotation index, low in cost and free of toxicity; and when the collector is applied to high-calcium (high-magnesium) collophanite flotation, the high-phosphate concentrate grade (P2O5) can be remarkably improved, the recovery rate of high-phosphate concentrate can be remarkably increased, and the impurity content of the concentrate is lowered.

The invention discloses a composite phosphate removing agent for removing high-concentration phosphorus-containing waste water and an application method thereof, and belongs to the field of sewage disposal in environmental protection. The composite phosphate removing agent is formed by mixing organic substances and inorganic substances, wherein the organic substances refer to organic acid and organic alcohol, and the inorganic substances refer to talcum powder, sodium ferrate and the like. The composite phosphate removing agent comprises the following compositions: 5 to 20 percent of organic acid, 5 to 20 percent of alcohol, 20 to 85 percent of talcum powder and 20 to 85 percent of sodium ferrate. The method comprises the following steps: adding the composite phosphate removing agent with the proportion into the high-concentration phosphorus-containing waste water, wherein the adding amount is between 100 and 1,000 ppm; using waste water containing ammonia nitrogen to adjust the pH value of the phosphorus-containing waste water to 8.0 and 9.0; stirring the mixture for 5 to 30 minutes; and performing air floatation treatment. The yielding water can reach the first-class emission standard of the country. The invention has the characteristics of simple technological flow, relatively low pharmaceutical dosage, low operation cost, low sludge yield, high phosphate removing effect, and the like.

The invention relates to a calcium roasting vanadium extraction raw material and a vanadium extraction method thereof, and belongs to the field of preparation of vanadium oxide. The invention aims tosolve the problem that no high-efficient vanadium extraction method is available for high-calcium and high-phosphate-vanadium slags. The technical scheme of the invention is characterized by providingthe calcium roasting vanadium extraction raw material. The calcium roasting vanadium extraction raw material comprises the following components in parts by weight: 20-60 parts of high-calcium and high--phosphate-vanadium slags, 38-80 parts of ordinary vanadium slags, 1-18 parts of additionally prepared CaO; the content of V2O5 in the high-calcium and high--phosphate-vanadium slags is 9%-25%; thecontent of CaO in the high-calcium and high--phosphate-vanadium slags is 15%-50%; the content of P in the high-calcium and high--phosphate-vanadium slags is 0.7%-2%; the content of V2O5 in the ordinary vanadium slags is 9%-25%; the content of CaO in the ordinary vanadium slags is 1%-3%; and the content of P in the ordinary vanadium slags is 0.03%-0.06%. By adopting the vanadium extraction method,a V2O5 product which meets the industrial standard can be prepared by taking the high-calcium and high--phosphate-vanadium slags as the raw material; besides, the recycling rate of vanadium is high; and the vanadium extraction method is easy to implement.

The invention discloses a high-phosphate-adsorption-activity large-particle-size zirconium hydroxide. The specific area is 300-700 m<2> / g; the pore volume is 0.15-0.3 cm<3> / g; the pore size is 1.5-3.0nm; and the particle size D10 is greater than or equal to 5 mu m and smaller than or equal to 15 mu m, the particle size D50 is greater than or equal to 20 mu m and smaller than or equal to 30 mu m, and the particle size D90 is greater than or equal to 40 mu m and smaller than or equal to 90 mu m. The invention also discloses preparation and use methods and application of the zirconium hydroxide. The prepared zirconium hydroxide has favorable selective adsorption effects on H2PO4<->, HPO4<2-> and PO4<3-> in the water body, and is free from the influence of other impurity ions; and the adsorption capacity can reach 0.7 mmol / g or above. The zirconium hydroxide has the advantages of favorable biocompatibility, no toxicity and no harm, can lower the dialysis pressure and energy consumption when being mixed with large-particle-size SiO2, and can be used as a medical dialysis material to regulate the phosphorus content in blood.

Novel smoldering suppressing compositions containing a metal complex of ammonium superphosphoric acid and having a high phosphate content, and processes for their preparation, are disclosed. Further disclosed are formulations containing these compositions and articles-of-manufacture having these formulations applied thereon. These novel formulations are particularly effective as smoldering suppressants for textiles, and are characterized by a high washing fastness.

The invention relates to the technical field of agricultural microorganisms, in particular to a saline-alkaline-tolerant phosphate solubilizing bacterium and application thereof in improvement of saline-alkaline soil. The phosphate solubilizing bacterium is bacillus megaterium, and the preservation number of the phosphate solubilizing bacterium is CCTCC M 2020453. The phosphate solubilizing bacterium can tolerate saline-alkali conditions of pH as high as 9.5 and 5.0% NaCl, has a high phosphate solubilizing function, and is especially suitable for development of biological bacterial fertilizersof phosphate solubilizing bacteria in saline-alkaline soil.

The invention provides inorganic phosphate solubilizing bacteria, which is a Lysinibacillussphaericus strain P19, with a collection number of CGMCC No.4769. When the inorganic phosphate solubilizing bacteria are inoculated onto eucalyptus, the accumulation of dry matter in eucalyptus can be promoted. The strain P19 has a high eucalyptus growth promoting effect, has high phosphate solubilizing capacity, can improve the soil phosphorus utilization rate of eucalyptus plants considerably, improve the accumulation of the dry matter in the eucalyptus to a great extent, and can achieve a better effect than applying phosphate fertilizer and organic fertilizer.

The phosphate eliminating flocculent and its production process belongs to the field of phosphate eliminating in sewage treatment. The phosphate eliminating flocculent has ferrous sulfate, which is the side product of titanium white powder production, as the main material, and has the features of simple component, waste utilization, low cost, etc. The production process is completed at normal temperature and is simple, safe and without harmful gas produced. Adding the phosphate eliminating flocculent into sewage can eliminating soluble phosphate effectively from sewage, eliminate phosphides in other forms in flocculation and lower SS, COD, BOD, etc. The present invention may be used widely in sewage treatment, especially high phosphate sewage treatment.

A flow wood processing extracting lignin from woody plant material and converting delignified cellulosic residue to crude bio-oils, that removes toxic preservative chemicals from waste timber, and provides conversion to useful or nontoxic forms. Wood is chipped and fed into a lignin extractor using ethanol at high temperatures to dissolve the lignin with counter current material contactors, heat exchangers, and a computer control system. Most of preservative chemicals likely precipitate out at this stage as a heavy sludge that can be removed. Ethanol containing dissolved lignin is removed from the lignin extractor, the dissolved lignin recovered, the ethanol recycled into the lignin extractor, and residual heat returned to the process. Delignified cellulosic pulp is removed from the lignin extractor and subjected to a milling to convert into a smooth sludge for entry to a bio-convertor by a super critical water process. The residue is prepared as a high phosphate fertilizer.

An insoluble phosphate bioleaching method is characterized in that insoluble phosphate raw materials are crushed and sieved by a 2mm sieve, bacillus is qualitatively and quantitatively measured by a phosphate dissolving ring and a liquid shake flask culture medium, efficient strains with high phosphate dissolving capacity is screened, 2-8ml screened efficient strains are inoculated into 100ml of nutrient broth media and cultured for 3-5 days under the condition of 25-35 DEG C and 100-150r / min to serve as bacteria, 10% of sucrose is added into clear water and serves as a nutrient source, 1-7% of insoluble phosphate raw materials are added, 2-8% of the cultured bacteria are inoculated and cultured for 7-10 days under the condition of 25-35 DEG C and 120-160r / min, and solid residues and culture solution are separated until the content of water-soluble phosphorus in the culture solution is higher than or equal to 100mg / L. The selected bacteria have an efficient phosphate dissolving function and are high in phosphate bioleaching rate, the content of beneficial microorganisms in soil can be increased, and phosphorus use rate is increased.

The invention relates to low-temperature phosphate solubilization Sinorhizobium fredii and inoculant thereof. The strain name is ATHC-2, the classification name is Sinorhizobium sp., the preservation unit is the China General Microbiological Culture Collection Center, the preservation number is CGMCC No. 10651, the preservation date is March 20, 2015, and the preservation address is No. 3, NO. 1 Courtyard, Beichen West Road, Chaoyang District, Beijing. The bacterial strain ATHC-2 disclosed by the invention can resist the influence on the growth of the bacterial strain ATHC-2 by low temperature, and has high phosphate solubilization activity. Low-temperature-resistant rhizobium inoculant is used for alleviating influence on soybean nodulation and nitrogen fixation in agricultural production, improve soil fertility, reduce the use amount of fertilizer and improve the yield and the quality of crops including soybean and the like.

The invention belongs to the technical field of comprehensive utilization of resources and discloses a magnesium ammonium phosphate-phosphorus fertilizer slow-release fertilizer and a preparation method thereof. The magnesium ammonium phosphate-phosphorus fertilizer slow-release fertilizer is characterized in that magnesium ammonium phosphate obtained by high-ammonia-nitrogen or high-phosphate wastewater is used as a coating material, coating phosphorus pentoxide with a modified starch adhesive and granulating are performed to obtain the magnesium ammonium phosphate-phosphorus fertilizer slow-release fertilizer, and magnesium ammonium phosphate particles and phosphorus fertilizer particles form the magnesium ammonium phosphate-phosphorus fertilizer slow-release fertilizer in a layer-by-layer coating form. By adoption of the magnesium ammonium phosphate slow-release fertilizer as the coating material, the release rate of the phosphorus fertilizer can be effectively controlled, phosphorus fertilizer controlled-release effects of the magnesium ammonium phosphate material are evident under different conditions, and nutrient elements are released gently. In addition, by introduction ofthe phosphorus fertilizer, the requirement of excessive phosphorus demands of part of plants can be met, and soil hardening is avoided.

The present invention belongs to the technical field of environmental protection, and in particular relates to a method for removing phosphorus from animal manure containing phosphorus, nitrogen and carbon. The method comprises the steps of: sieving animal manure, diluting with water, stirring evenly, adjusting the pH value to 3.2-4.0 by acid, conducting a hydrolysis reaction, allowing to stand, conducting solid-liquid separation, so as to obtain a hydrolysis reaction liquid portion and a solid portion; adjusting the pH value of the liquid portion to 8.0 to 11.0 by alkali, adding a flocculant to precipitate phosphorus, so as to obtain a liquid portion with phosphorus removed and a precipitated solid containing phosphorus; filtering the precipitated solid containing phosphorus, and recovering the liquid portion. The method of the invention has high phosphate removal efficiency and no obvious influence on nitrogen content.

This invention discloses a method for dephosphorization of high-phosphorus ore by melt reduction. The high-phosphorus ore smelting capacity of the present melt reduction process depends on the oxygen potential of furnace slag, and is very low generally. The method in this invention comprises: mixing high-phosphorus ore, carbon reductant, quicklime and fluorite, adding into a temperature field, and melting. The ratio of carbon in carbon reductant to iron in high-phosphorus ore is 140-350 kg C / ton Fe. The ratio of CaO in quicklime to SiO2 in high-phosphorus ore is 1.6-3.0. The weight ratio of fluorite to high-phosphorus ore is 5-20%. The diameters of high-phosphorus ore are below 6 mm. The diameters of carbon reductant are below 0.5 mm. The diameters of quicklime and fluorite are below 6 mm. The temperature of the temperature field is 1300-1500 deg.C.

The invention discloses a genetically modified efficient phosphate solubilizing engineering bacterial strain and an application thereof. The bacterial strain is bacillus amyloliquefaciens PS57H1 CGMCC No.6089, phosphate solubilizing bacteria PS57 are screened and obtained from plant rhizosphere soil to construct a complete expressing element containing glucose dehydrogenase (gdh) genes, and then the gene expressing element is electro-transformed into host bacteria PS57 to obtain the bacterial strain. According to experiments, the content of dissoluble phosphorus in a culture medium can reach up to 58.8mg / L when the bacterial strain is cultured in the inorganic phosphorus culture medium (main phosphorus is from indissoluble calcium phosphate with the phosphorus content of 5g / L) for 72 hours, so that the bacterial strain has high phosphate solubilizing effect and can be used as phosphate solubilizing bacteria to be applied to microbial fertilizer production.