1328results about How to "Reduce alkalinity" patented technology

A system and process for treating water are described. Water may be purified by passing feed water through an electrochemical deionization device. The water may be suitable for cooking, washing, and beverage production.

The present invention relates to a building block of ecological slope protection vegetation, a fabrication method and a construction technique. The building block is composed of a growing bed body, a lath crib, planting troughs, a vegetation layer and a plant, the lath crib wraps the circumference of the growing bed body, the upper plane of the growing bed body is lower than the upper plane of the lath crib and concave, the vegetation layer is formed on the growing bed body, which matches the inner walls of the sectional area of the lath crib to form an integral building block, and more than one planting troughs are arranged on and run through the growing bed body. The design of the present invention is scientific, the structure is reasonable, the restoration of water ecology can reduce the operating cost, environment is improved, ecology is reinstated, harmonious natural beauty is enhanced, and the present invention is suitable for the nidification of small living creatures and the habitation and the survival of aquatic fishes, so that the cutting-off continuity of water and land regions is restored. The present invention is widely applied to channel slope protection, levee slopes, roadsides, airports, parks, public lands, household lawns, sports grounds, etc. The present invention is suitable for cold regions, damp regions, warm and damp intermediate zone, etc.

The invention relates to cement-based shrinkage-free wall hole-penetrating blocking materials and a preparation method and a construction method. The materials comprise, by weight, 100 cement, 0-100 active admixture, 0.01-10 water reducing agent, 0.01-10 early strength agent, 0.1-30 expanding agent, 0-20 adhesion agent, 0-10 water repellent, 0.01-30 plastic retaining agent, 0.01-10 starch ether, 0-60 power filler and 0-300 aggregate. Compared with the prior art, the cement-based shrinkage-free wall hole-penetrating blocking materials have the advantages of being good in construction performance, and long in operational time. New mixing slurry has good plasticity, adhesive power and anti-falling performance, a caulking gun or a caulking machine can be used for pressing, injecting or sealing holes, a flowing phenomenon cannot appear even big holes are filled, and the big holes can be filled until the big holes are full and until reaching the deep hole, and completely sealed, and the sealing materials can fully come into play.

A porous particulate material for treating a fluid containing a contaminant is disclosed. The particulate material comprises a cementitious matrix or binder and treated bauxite refinery residue or red mud. At least a portion of the pores in the particulate material is open cell or interconnected pores. The invention also relates to the use of a reactive permeable barrier comprising porous material, for treating a contaminated fluid. Also disclosed is a method for producing porous particulate material for treating a contaminated fluid and a method for treating a contaminated fluid, in which the porous material is used. The invention furthermore relates to a cementitious composition comprising partially neutralised red mud and cement, wherein the partially neutralised red mud has been pre-treated by contacting it with water having a total hardness supplied by calcium, magnesium or a combination thereof, of at least 3.5 millimoles per litre calcium carbonate equivalent. The cementitious composition is useful as a building and construction material.

The invention relates to a fertilizer for saline-alkali soil. The fertilizer is prepared from the following raw materials in parts by weight: 5-20 parts of humic acid, 0.3-1 part of microorganisms, 6-16 parts of farmyard manure, 15-40 parts of straws, totally 5-10 parts of calcium superphosphate, ferrous sulfate, coal ash, furfural residues and flue gas desulfurization gypsum, 6-14 parts of a nitrogen fertilizer, 2-4 parts of a phosphatic fertilizer and 2-3 parts of a potassic fertilizer. The invention further relates to a preparation method of the fertilizer for saline-alkali soil. The fertilizer for saline-alkali soil, which is provided by the invention, has the beneficial effects that the fertilizer for saline-alkali soil has the characteristics of being low in cost and simple in preparation method, can be used for effectively improving the condition of saline-alkali soil, reducing the content of salt of soil and the pH value and increasing the content of organic matters in soil, and is particularly suitable for being applied to the saline-alkali soil.

The present invention relates to a phosphorus-free composite antiincrustation corrosion inhibitor. It includes polyaspartic acid and / or polyepoxysuccinic acid and at least one kind of scale inhibition and dispersion agent, in which the scale inbibition and dispersion agent is polymer containing carboxylic acid group, or it includes polyaspartic acid and / or polyepoxysuccinic acid, zinc salt, molybdate or tungstate and polymer containing carboxylic acid group. Said invention is applicable to treatment of circulating cooling water.

A method for producing polyphenylene sulfide (PPS) polymer, including polymerizing reactants in a reaction mixture in a vessel to form PPS polymer in the vessel, measuring values of operating variables of the vessel and / or PPS process, and determining the amount of quench fluid to add to the vessel based on the values of the operating variables. The technique may rely on the vapor liquid equilibrium (VLE) of the mixture to calculate the concentration of water existing in the reactor prior to quench, and accounts for the effectiveness of the upstream dehydration process and in the amount of water produced during the polymerization. The technique is a striking improvement over the trial-and-error estimation of the amount of quench water based on human operating experience, and avoids direct measurements of the existing water concentration in the reactor. The result is improved control of PPS particle size and other properties.

The invention relates to a composite corrosion and scale inhibitor and application thereof. The composite corrosion and scale inhibitor comprises a) two different salts selected from the group consisting of water-soluble borate, water-soluble gluconate and water-soluble silicate, b) at least one organic phosphonic acid and c) at least one scale inhibition and dispersion agent, wherein the scale inhibition and dispersion agent is a polymer containing carboxylic groups. The composite corrosion and scale inhibitor provided in the invention has good comprehensive performance, an excellent effect on inhibiting CaCO3 scale, strong capability in stabilizing Zn<2> in water and good corrosion inhibition, is applicable to treatment of circulating cooling water and uses a small amount of organic phosphonic acid, thereby reducing harm to environment caused by discharge of phosphorus.

The invention generally relates to concentrated warewashing compositions and methods of using the same. In some aspects, the invention uses concentrated compositions in methods of warewashing where the concentrate is applied directly to the article to be cleaned, rather than dispensed into a sump and applied to the article as a ready-to-use composition. In additional aspects, the methods of using highly concentrated alkaline and / or acid compositions in an alternating pattern of alkaline-acid-alkaline or acid-alkaline-acid, or the like, provide substantially similar or superior cleaning efficacy while reducing the overall consumption of the alkaline and / or acid compositions.

The present invention relates in a first consideration to aldimines of formula (I). Said aldimines are particularly suitable as latent hardeners in curable compositions, particularly compositions comprising one or two-component isocyanate groups. Due to the presence of the reactive group, they can be converted to compounds of the formulas (X) and (XII) comprising aldimine groups, implementing a further consideration of the present invention. The aldimines, or the compounds comprising aldimine groups, can be used primarily in adhesive and sealant materials, but also in coatings, and can be produced easily from readily available source materials, and have good thermal stability. The tertiary amino group thereof has a surprisingly low alkalinity and can in some cases have a catalytic effect in chemical reaction systems.

The invention discloses a high-moisture filling material and a preparation method thereof. The high-moisture filling material comprises a composition A and a composition B, wherein the composition A comprises 52.4 to 95 by weight percent of sulfo-aluminate cement clinkers, 2.7 to 39 by weight percent of aluminate cement clinkers, 0.3 to 2 by weight percent of setting retarder, and 1.5 to 8 by weight percent of suspending agent; the composition B comprises the following ingredients: 40 to 80 by weight percent of anhydrite, 10 to 30 by weight percent of lime, and 10 to 36 by weight percent of compound additives. The high-moisture filling material has the advantages of easily-available raw materials, low price, good stability, high long-term strength and no risk of surface efforescence.

An organic opto-electric device is disclosed comprising an opto-electric element and a protective enclosure for protecting the opto-electric element against atmospheric substances. The protective enclosure comprises a multi-layered protective layer in which a first inorganic layer, a first organic layer comprising a getter, a second organic layer free from getter material and a second inorganic layer are stacked in the order named, wherein the first and the second inorganic layer encapsulate the first and the second organic layer. The getter is distributed in the first organic layer a nanometer sized particles and the second organic layer has a thickness of at least 10 μm.

A comprehensive utilization method of high-ferrum and low-grade bauxite belongs to the technical of metallurgy and is carried out according to the steps as follows: a large proportion of aluminium oxide is extracted through a Bayer process technology that excess lime is added, produced low-alkali red mud is pre-reduced through a coal-based rotary furnace process technology, then high-temperature melting separation of aluminium slag / ferrum is realized by adopting a ferrum bath oxygen coal jetting technology, formed aluminium slag generates calcium aluminate cement after being quenched and tempered, calcium aluminate cement slag is leached with low sodium carbonate solution, a part of leached crude solution and digestion slurry by the Bayer process are mixed and enter a Bayer process system to extract aluminium oxide, and the other part is desilicated and then is resolved in a carbonation manner, aluminum hydrate, which is the decomposition product, is conveyed to the Bayer process system as seed crystal, and resolved mother liquid is used for leaching calcium aluminate cement slag after being mixed. The method provided by the invention can not only ensure efficient dissociation extraction of ferrum and aluminium, but also be practicable in technology and economic benefit, thereby comprehensively utilizing high-ferrum bauxite resource of China effectively.

The invention provides complete equipment and process for processing coal tar wastewater, and belongs to the technical field of environmental conservation. The process comprises the following steps of: adopting different removal principles according to different physicochemical properties of heavy oil, light oil and emulsified oil; scientifically and orderly removing the heavy oil, light oil and emulsified oil through three sets of environmental conservation equipment such as a multi-stage oil separator, an oil-water separator and an air floating tank gradually; combining a micro electrolysis reactor with a five-section integrated oxidization device; and firstly destroying a benzene ring by microelectrolysis, and then strongly oxidizing various organic matters through an oxidant, so that the COD (chemical oxygen demand) and the chromaticity are greatly reduced. Ammonia nitrogen can be efficiently removed by a denitrification system; the denitrification system is low on requirements of pH value and temperature, and low in operation cost; the denitrification system is arranged behind the five-section integrated oxidization device; the reaction change of power of hydrogen is fully considered; and the complete equipment complies with the scientific principle, and can be used for reducing feeding of acid and alkali, and lowering the operation cost.

The invention provides a high-nickel cathode material, which comprises a base material and a lithium cobaltate layer, wherein the base material is a compound as shown in a formula I; and the lithium cobaltate layer coats the surface of the base material. The high-nickel cathode material provided by the invention comprises the lithium cobaltate layer; the lithium cobaltate layer can interact with the residual lithium on the surface of the base material, so that the alkali content of the surface of the high-nickel cathode material provided by the invention is relatively low; meanwhile, the lithium cobaltate layer can strengthen intercalation / deintercalation of lithium ions in battery charging and discharging processes; side reaction of the cathode material and electrolyte can also be suppressed; and the high-nickel cathode material provided by the invention has relatively high energy density and long cycle life, so that a lithium-ion battery prepared from the high-nickel cathode material has relatively high capacity, cycle performance and heat stability. The invention further provides a preparation method of the high-nickel cathode material and the lithium-ion battery.

The invention relates to a gelling material for mine tailing filling. The gelling material for mine tailing filling used for improving the early stage strength of a filler and having good water segregation performance is obtained through the steps of respectively milling phosphogypsum, red mud, phosphorus residues and clinker to 800m<2> / kg, 700m<2> / kg, 300m<2> / kg and above 300m<2> / kg respectively, uniformly mixing the above milled raw materials, and adding an exciting agent. The gelling material is used to carry out mine tailing filling, and the raw materials are from various industrial waste residues, so the gelling material has the advantages of low cost, simple technology, strong maneuverability, low filling cost, effective utilization of various industrial waste residues of the metallurgy industry, energy saving, emission reduction and environmental protection.

The present invention is one kind of fertilizer specially for improving saline-alkaline land and its production process. The fertilizer is produced with gypsum and organic matter as main material and through one special production process. The production process is one advanced biological organic fertilizer producing process including reasonable matching of gypsum and organic material and fermentation with excellent biological bacterial preparation. The fertilizer has the functions of improving saline-alkaline land, lowering soil alkalinity, lowering soil pH value, promoting formation of granular soil structure, raising soil fertility, raising the yield and quality of crop, reducing crop disease, etc.

The invention relates to an inorganic composite heat insulation material, which is prepared from the following raw materials in part by weight: 100 parts of common silicate cement, 10 to 30 parts of quick hardening sulfate aluminum cement, 10 to 30 parts of gypsum powder, 10 to 40 parts of admixture, 20 to 40 parts of mineral fiber, 150 to 200 parts of vitrified micro bubbles, 4 to 8 parts of re-dispersible latex powder, 2 to 4 parts of cellulose ether, 0.1 to 0.3 part of starch ether, 0.2 to 1.0 part of water reducing agent, 0.2 to 0.6 part of retarder, 1 to 3 parts of early strength agent, 0.5 to 3 parts of water repellent, and 0.02 to 0.06 part of air entraining agent. The raw materials are mixed uniformly to prepare dry powder, and the dry powder and water are mixed in a weight ratio of 1: (0.8-1.2) and stirred to form slurry for use. The inorganic composite heat insulation material has good workability, quick strength development, high construction efficiency, good adhesive property, low drying shrinkage, heat insulation, hydrophobic property, fire resistance and durability.

The invention discloses a saline-alkali soil improving agent, and a preparation method thereof. The preparation method comprises following steps: fermented plant fiber and fermented animal excreta are uniformly mixed and grinded so as to obtain a mixture of 80 to 100 meshes; wood vinegar and water are added, uniform mixing is carried out, and an obtained mixed material is subjected to pelletizing and drying until water content ranges from 3 to 8%, wherein the adding amount of water accounts for 5 to 30% of the total weight amount of the mixture; an obtained product is sieved so as to obtain a granular mixture with a particle size ranging from 3 to 5mm; the granular mixture is subjected to drying and cooling, and a microorganism agent is sprayed onto the surface of the granular mixture; and an obtained semifinished product is uniformly mixed with a mixture A and a mixture B so as to obtain a finished product, wherein the mixture A is obtained via uniform mixing and grinding of ground phosphate rock, vermiculite, medical stone, sodium alginate, and polyacrylamide to 120 to 200 meshes, and the mixture B is obtained via uniform mixing and grinding of humic acid and furfural residue to 80 to 100 meshes. The saline-alkali soil improving agent is capable of reducing soil alkalinity, activating soil, reducing salinity and alkalinity effectively, improving saline-alkali soil structure, improving soil fertilizer conservation and water-holding capacity, improving saline-alkali soil physical and chemical properties, and realizing positive cycling of saline-alkali soil.

A process for preparing activated carbon from block paper-making liquid by concentrating and charring includes such steps as evaporating for concentrating, charring at 500-800 deg.C for 10-90 min to obtain alkali contained coke, immersing in hot water, eluting, filtering and drying.

The invention discloses a saline-alkali soil improving method. The method includes the steps of leveling the terrain of selected saline-alkali soil, laying salt disc elimination harge closed underground pipes, installing a bitter water desalting system to desalt crude water and collected salty water of the saline-alkali soil to provide fresh water for irrigation salt content restraining and irrigation, primarily conducting primary salt elimination on the saline-alkali soil through irrigation salt content restraining, adjusting the soil structure through a saline-alkali soil modifier, providing trace elements required by plants, planting salt-tolerant plants for further reducing salt content, conducting underground salt elimination through the combination of drip irrigation-micro jet devices and the salt-tolerant plants, and executing information maintenance management on the area of the saline-alkali soil. The method integrates biology, physics, chemistry and water conservancy methods, and is small in water resource consumption, rapid in effect, not prone to salt returning and more beneficial to plant growth.

The invention relates to a positive electrode material of a high-capacity dynamic-type nickel-rich lithium ion battery and a preparation method. The molecular formula of the positive electrode material of the high-capacity dynamic-type nickel-rich lithium ion battery is LiaNi1-x(MM')xO2.M''O, wherein a is equal to 0.9-1.2, x is more than or equal to 0 and less than or equal to 0.7, and M is at least one of Co, Mn and Al; M' is at least one of Co, Al, V, Mn, Zr, Mg, Ti, Cr, Zr, La, Ce, Pr, Nd, Nb, Mo, Y, Sr, Ba, B, Sr, Sn and Ta; M''O is a cladding layer, and M'' is Co and Al. The invention also relates to a preparation method for the positive electrode material of the high-capacity dynamic-type nickel-rich lithium ion battery. The material machining performance is excellent, the battery prepared by utilizing the material, the cycling performance and the high-voltage performance are excellent, the safety and stability in use can be realized, not only can the application performance requirement of a portable electronic device on the battery be met, but also the positive electrode material is applicable to the power battery.

The invention discloses a low-alkalinity tile glue, which comprises the following components in parts by weight: 30 to 45 parts of cement, 40 to 60 parts of fine aggregate, 8 to 15 parts of filling material, 0.2 to 0.5 part of water-retaining and thickening agent, 0 to 0.1 part of starch ether, 1 to 3 parts of redispersable latex powder, 0.1 to 0.3 part of water reducer, 0.1 to 0.3 part of retarder, 0.1 to 0.4 part of salt-petering resisting agent, 0.1 to 1.0 part of fiber, and 15 to 22 parts of water. The tile glue has the advantages of low alkalinity, salt-petering resistance, good construction performance, high adhesive strength, cavity and cracking resistance, and slippage resistance.

A cementing material is a cement whose main components are calcium phosphoaluminate, calcium aluminate and calcium phosphate. Its clinker contains such chemical components (wt%) as CaO (30-60), Al2O3 (17-50), SiO2 (1-15), P2O5 (10-30), Fe2O3 (1-8) and MgO (1-7). Its advantages are high and early strength, high refractory nature, and high compatibility with existing cement.

The invention provides membrane biologic reaction equipment and a processing method for processing industrial waste water with high ammoniac nitrogen. In the processing equipment, an anaerobic water outlet pool (100), an oxygen-poor pool (2), a first-section aerobian pool (3), a second-section aerobian pool (4) and a membrane pool (5) are connected according to the circulation sequence of fluid, wherein immersion type unitization hollow fibre membrane filtration equipment is arranged in the membrane pool for carrying out solid and liquid separation of processing liquid. The equipment adopts a control mode combining manual control and automatic control, and the operation and the maintenance are simple. A biochemical system has a flexible running mode with adjustable oxygen-poor and aerobian time, adjustable dirt return quantity, adjustable return modes, and the like so as to adapt to the change condition of the produced waste water and ensure high processing efficiency.

An agrichemical is disclosed having increased bio-activity which is adapted for spray application in a form which offers reduced aerial drift and improved deposition on organisms, reduced agglomeration and gellation problems, is adapted for use with chemicals, pesticides and fertilizers and allows for lower agrichemical use rates. Various adjuvants and surfactants are combined with fertilizers or pesticides, such as herbicides fungicides and insecticides, to reduce application problems relating to droplet size, foaming, chemical stability, plant and area coverage, droplet drift, surface tension, suspension, incompatability, phytoxicity, solubility, volatilization and evaporation, while providing enhanced bio-efficacy and low aquatic toxicity. Purifying the agrichemical composition water source by any of various known processes such as oxidation, ultra-filtration, deionization, reverse osmosis or nanofiltration lowers or removes alkaline components, such as calcium, magnesium, iron, sodium, etc., and reduces water hardness, and further increases the agrichemical's bio-efficacy.

The invention discloses a method for improving saline-alkali soil. The method includes selecting saline-alkali soil improvement fertilizer comprising coal with not less than 40% of humic acid, organic farmyard manure, rhizobium manure and fulvic acid potassium; ploughing the soil and applying the saline-alkali soil improvement fertilizer; applying base fertilizer; irrigating the soil; soaking rice seeds in warm water until the seeds are cracked, sowing the seeds after water in the field evaporates and the soil layer is exposed, and irrigating the soil after the rice seeds take root; performing topdressing, and applying the saline-alkali soil improvement fertilizer and earing nourishing fertilizer according to seedling conditions, water quality and soil quality. The method has the advantages that salt-alkali resistant rice varieties are combined with the saline-alkali soil improvement fertilizer organically, the saline-alkali soil improvement fertilizer can meet nutrition requirements for rice growth, reasonable matching is achieved, raw materials used are from extensive minerals and industrial and agricultural waste, low cost and high pertinence are realized, improvement cost is reduced, and technical popularization and promotion are benefited.

The invention provides a sectional three-dimensional structure for the fast desalting and soil improvement of saline-alkali soil of a new tidal marsh reclamation area. According to the sectional three-dimensional structure, a soil layer of the saline-alkali soil to be desalted is subjected to ditching at the depth of 90-100 cm, and underground pipes are buried in a manner that the burying spacing is 20-30 m and the inclination angle is 1-3 DEG, so as to form an underground-pipe drainage layer; soil of a sectional surface layer of the soil layer is grooved at the depth of 40-45 cm and is stacked in an open space aside, and straws are laid uniformly after the surface of soil is leveled, so as to form a straw isolating layer with the thickness of 5-8 cm; and chopped straws and desulfation gypsum are added into the soil of the surface layer, which is stacked aside, the chopped straws, the desulfation gypsum and the soil of the surface layer are mixed uniformly, composite soil with the thickness of 10-15 cm is laid on the straw isolating layer, infiltrating irrigation capillaries are laid in the spacing of 0.8-2 m, and rest composite soil is then laid and is leveled, so as to form a straw and gypsum mixed cultivation layer. The sectional three-dimensional structure has the advantages that the sectional three-dimensional structure is organically combined into a whole up and down, the effects on the fast desalting and soil improvement and effective salinization process inhibition of the new tidal marsh reclamation area are remarkable, and the improvement cycle for the saline-alkali soil of the new reclamation area can be shortened effectively.

The invention relates to a method for processing a ternary material by being clad with lithium ferric manganese phosphate. The invention belongs to the technical field of a cathode material of lithium ion batteries. The method for processing the ternary material by being clad with the lithium the ferric manganese phosphate comprises the steps of 1, preparation of LFMP precursor slurry: respectively weighing iron, manganese, lithium and phosphorus sources in proportion required by 0.1-100g LFMP, weighing 0-50g ascorbic acid, and adding a dispersion solvent, wherein the solid content is 10%-80%; 2, mixture of materials: weighing 100g ternary material with the constitute of Li(z)Ni(1-x-y)Co(x)Mn(y)O(2), or the mixture of two or more constitutes with the above proportion, adding the slurry, mixing the slurry and the mixture, and carrying out vacuum drying; 3, preparation of the ternary material / lithium ferric manganese phosphate composite cathode material: putting the materials into an argon protective atmosphere sintering surface, keeping warm at the temperature of 250-400 DEG C for 2-6h, then heating to 500-700 DEG C and keeping for 6-16h, cooling along with the furnace, and sieving. The method provided by the invention has the advantages of being simple in technology, convenient to operate, accordant in material performance, small in influence on cell capacity density, and being capable of improving safety performance of the ternary material.

A method for producing a fuel or fuel additive comprising providing a reaction mixture comprising oil and an alcohol in an oil-in-alcohol emulsion and a catalyst for converting the oil to the fuel or the fuel additive. The oil and the alcohol are reacted in the presence of the catalyst, at a concentration below that used in a conventional batch process, to produce the fuel or fuel additive. This low level of catalyst reduces the formation of diols and oxidation products that can diminish the quality of the fuel or fuel additive. The fuel or fuel additive produced is continuously removed during the reaction, effectively de-coupling the concentration of catalyst used from the rate of the two phase reaction.