143results about How to "Save production water" patented technology

The invention discloses a polyvinyl formal sponge material with uniform abscesses and rapid imbibition and a preparation method thereof. The material comprises polyvinyl alcohol, a cross-linking agent, a catalyst and a pore-forming agent, wherein the cross-linking agent is formaldehyde or paraformaldehyde or formaldehyde solution. The preparation method comprises the following steps of: stirring 2-9 parts of polyvinyl alcohol in 100-200 parts of water of which the temperature is 60-98 DEG C to obtain solution, and adding 0.05-8 parts of pore-forming agent to the solution; fully emulsifying the pore-forming agent to form evenly dispersed continuous solution phase; then adding 1-26 parts of catalyst and 1-15 parts of cross-linking agent or 5-50 parts of recovered liquid waste, 1-8 parts of catalyst and 1-15 parts of cross-linking agent, and mixing; pouring the mixture into a mould after 1-60 min for cross-linking reaction for 0.1-2 hours to form the abscesses under the action of the pore-forming agent; and continuing to heat and cure for 2-18 hours to prepare the polyvinyl formal sponge material. The invention has the advantages of good hydrophily, high compression strength, high dry wetting rate, high imbibition ratio and the like.

The invention provides an oxidation prevention process used for lithium ion battery copper foil. The method comprises the steps that a semi-finished copper foil product which is not oxidized is introduced into an anti-oxidation passivation solution to be soaked, then squeezed dry through a squeeze roll, dried through hot air of an oven and directly wound, and a copper foil product is obtained after the oxidation prevention process. The anti-oxidation passivation solution comprises, 100-200 g/m<3> of benzotriazole, 0-1000 g/m<3> of chromic anhydride, 0.1-2 g/m<3> of rare earth metals of phosphoric acid, 0.1-2 g/m<3> of organic silane coupling agents, 10-30 L/m<3> of ethyl alcohol, and the balance water. The pH value is adjusted to be 5.5-8.5 through alkali such as sodium hydroxide and potassium hydroxide. The process is free of pollution to the environment; an anti-oxidation film of the produced copper foil product is moderate, even and consistent in thickness; the copper foil product is high in electrical conductivity and wettability, and the properties of the capacitance, the number of times of charge and discharge and the service life of a lithium ion battery can be effectively improved.

The invention relates to a preparation method of isomaltooligosacharide. The preparation method comprises the following steps of 1, adding water into a starch raw material, adjusting a concentration and a pH value of the slurry, and adding high temperature-resistant alpha-amylase into the slurry to obtain starch slurry, 2, carrying out liquidation on the starch slurry to obtain a liquefied liquid, 3, adding maltotriose generation enzyme (AMANO AMT1.2L) and pullulanase (GENENCOR OPTIMAX L-1000) into the liquefied liquid, carrying out thermal-insulation saccharification, and carrying out enzyme denaturalixation to obtain a saccharified liquid, 4, adding alpha-glucosidetransferase into the saccharified liquid for a reaction to produce a primary trans-glucoside saccharified liquid, adding alpha-glucosidetransferase into the primary trans-glucoside saccharified liquid for a reaction, and carrying out enzyme denaturalixation to obtain a trans-glucoside saccharified liquid, and 5, carrying out decoloration on the trans-glucoside saccharified liquid, carrying out filtration, carrying out ion exchange, carrying out chromatographic separation, carrying out concentration and carrying out drying to obtain isomaltooligosacharide. The preparation method greatly improves contents of sugars such as panose, isomaltotriose and tetrasaccharide having polymerization degrees greater than or equal to 3 in the reaction product liquid.

The invention discloses a method for rapidly producing pickled chicken claws. The method comprises the following steps: 1, clearing and unfreezing chicken claws; 2, soaking the chicken claws with a liquid having 1-2% of salt and 5-10% of white vinegar and treating by ultrasonic wave; 3, boiling the treated chicken claws together with the liquid having 1-2% of salt and 3-4% of white vinegar for 3-8min; 4, cooling the boiled chicken claws by aseptic cold water added with 2-3% of white vinegar; 5, preparing a flavored soak liquid; 6, adding the cooled chicken claws in the flavored soak liquid and treating by the ultrasonic wave for 60-90min; and 7, vacuum-packing the pickled chicken claws to obtain finished products. The method for rapidly producing pickled chicken claws is characterized in that the soak liquid used by the pickled chicken claws is subjected to a fast cooling technology such that the soak liquid can achieve commercial sterilization, ultrasonic treatment is used in the soaking process for shortening soaking time, an irradiation technology is not used and only biological preservatives or extracts of fruits and vegetables are used as preservatives, and the shelf life is more than one year by computing according to current standards.

The invention discloses a high-intensity ardealite wall brick and the producing method. And the composition weight ratio of semi-hydrated ardealite to anhydrous ardealite to flyash to coagulant is (70-85) : (12-20 ): (15-20 ): (15-25), where the coagulant is 12-20% silicasol water solution. And the invention uniformly blends them in sprinkling mode, mechanically places the mixture into a mould and shapes in high pressure, mechanically demoulds, and naturally hydrates to make it. And the invention firstly uses large amount of ardealite raw material in building materials, where the synthetic utilization of ardealite is up to 80%; and it is low-cost and saves land resources. After processed, it accords with national stipulated nuclear radiation indexes, has high hardness, reduces equipment investment and reduces cost of product.

The invention discloses a comprehensive utilization method for solid wastes and waste acid in the production process of titanium dioxide. The comprehensive utilization method comprises the following steps of: firstly, respectively treating acidolysis waste slag, ferrous sulfate and calcium sulfate dehydrate which are generated in the production process of the titanium dioxide by adopting a sulfuric acid method through drying, crushing and other methods for later use; secondly, uniformly mixing 70-80 parts by weight of iron pyrite, 1-10 parts by weight of acidolysis waste slag, 1-5 parts by weight of ferrous sulfate and 1-10 parts by weight of calcium sulfate dehydrate to obtain raw ore for producing sulfuric acid, calcining the raw ore in a fluidized bed furnace to obtain furnace gas meeting the production requirement of the sulfuric acid, carrying out purification procedures such as cooling, dust removal and dehydration on the furnace gas obtained in the second step and then converting and absorbing the treated furnace gas by adopting a catalyst to obtain the sulfuric acid. According to the comprehensive utilization method disclosed by the invention, wastes generated in the production process of titanium dioxide are reasonably utilized and the recycling of resources is realized.

The invention belongs to the field of inorganic salt chemical industry and fertilizer production, particularly relates to a method for producing magnesium oxide with co-production of ammonium chloride by taking magnesium carbonate hydrate as an intermediate. The method comprises the following steps of: with anhydrous magnesium chloride or bittern magnesium chloride as a raw material and with ammonia and ammonium bicarbonate as precipitating agents, obtaining the magnesium carbonate hydrate intermediate (the purity reaches 97-99 percent) with favorable crystal form by controlling process conditions; calcining the obtained magnesium carbonate hydrate intermediate to prepare magnesium oxide (the purity reaches 95-99 percent); adding salt to mother liquor enriched with ammonium salts and evaporating, salting out and cooling to separate out ammonium chloride, and filtering to obtain the ammonium chloride, wherein the mother liquor is circularly taken as a raw material. The method aims at producing needle-shaped or spherical magnesium carbonate hydrate by utilizing rich magnesium chloride brine from salt lakes, or magnesium chloride brine from seawater, or anhydrous magnesium chloride used for producing titanium sponge by-products, and other magnesium salt materials, thereby preparing high-purity magnesium oxide with the simultaneous co-production of ammonium chloride fertilizer. The method of the invention has strong maneuverability and is easy to realize industrialization.

The invention relates to the improvement on an innocent treatment method for a mercury-containing waste tube. The method is characterized by comprising the following steps of: crushing the waste tube in water; performing at least three processes of washing, namely water washing, dilute nitric acid washing and water washing on the crushed tube in turn; separating and removing mercury on tube fragments; separating tube head metal from glass fragments through magnetic separation, wherein the whole treatment process is linked up in an airtight way and is performed in a sealed state; performing air draft guidance on gas emitted from the water surface under negative pressure; performing water and dilute nitric acid drip washing; and filtering and separating the mercury by using silver-carried activated carbon or sulfur-carried activated carbon, and discharging. The method has a simple and practical process, is energy saving, is suitable for automatic operation, and has the advantages of lowcost, simple and practicable process and the like; and by the method, the mercury is not released to the outside, and automatic treatment can be realized.

The invention discloses a waste water recycling pad dyeing long machine and a waste water recycling method thereof. The waste water recycling pad dyeing long machine comprises a desizing, scouring and bleaching combined machine, a mercerizer, a first recovery processing box, a second recovery processing box, a third recovery processing box, a first recovery pump, a second recovery pump, a third recovery pump, a light alkali recovery pool, a dilatation evaporator, an alkali dosing pool, a recovery pool, a recovery pump and connecting pipelines. The method comprises the following steps: a. introducing washing waste water into the first recovery processing box and then pumping into a scouring machine after filtering; b. introducing light alkali with high alkali concentration into the dilatation evaporator for processing through the recovery pool, then introducing processed high-concentration alkali liquor into the mercerizer for reuse and introducing processed water into an oxygen bleaching washing box for use; and c. introducing oxygen bleaching process water into the second recovery processing box and then introducing into a desizing machine washing box for use after filtering. The invention has the advantages of small waste water discharge, high efficiency, energy conservation, etc., saves a large amount of production water and alkali, and meets requirements of energy saving and emission reduction.

The invention provides an unidirectional circulation dyeing process for cheese. The unidirectional circulation dyeing process for the cheese is characterized in that a single circulation mode is adopted by dyeing liquor, and the dyeing liquor is driven to circulate from the interior of the cheese to the exterior of the cheese through the changing of the rotating speed of a main pump in a dyeing vat. According to the unidirectional circulation dyeing process for the cheese, a dyeing pulse technique and a spray technique are adopted to change a circulation mode of the dyeing process as single outflow dyeing, only half or even lower water level of raw materials are soaked by the dyeing liquor, dyeing can be carried out, the bath ratio can be lowered to 1:3, and production water consumption can be reduced greatly.

The invention discloses a recycle process of white water of a papermaking system, which comprises the following steps in sequence: (1) delivering the white water generated by a papermaking mesh vat and a vacuum pump in a papermaking workshop to a collecting tank; (2) delivering the white water to a pulping workshop to be supplied to a pulper for pulping; (3) delivering sewage generated by other parts of the papermaking system to a shallow water treatment system to be treated, and delivering 80 to 90 percent of the treated sewage back to the papermaking workshop to be reused, and draining the residual sewage after the sewage meets the emission standard; and (4) pressing staple fiber waste pulp generated in the shallow water treatment system to dryness through a filter press, and packaging the dried waste pulp. By the recycle process of white water, the white water generated in different parts is treated in different ways according to the respective characteristics, thus not only the treatment cost of white water is greatly reduced, but also plant fibers in the white water is recycled to the maximum extent, and the economic benefit is further improved; and the vast majority of white water is recycled, thus the sewage discharge of papermaking enterprises is reduced, and significant social benefit and environmental protection benefit are created.

The invention discloses a printing and dyeing textile sewage treatment system, which belongs to the field of sewage treatment equipment and solves the problems that when treated sewage is unqualifiedthrough detection, the sewage needs to return into an aeration tank to be treated again, so that the normal sewage treatment is influenced; the sewage treatment efficiency is reduced. The printing anddyeing textile sewage treatment system is mainly characterized by sequentially comprising a sewage storage pool, a filtering pool, a primary precipitation pool, an aeration pool and a secondary precipitation pool, wherein the secondary precipitation pool is connected with a membrane bioreactor. The printing and dyeing textile sewage treatment system has the advantages that the structure is reasonable; sewage which is still unqualified after the treatment is discharged into the membrane bioreactor to be treated, so that the normal sewage treatment is not influenced; the goal of improving the sewage treatment efficiency is improved.

The invention discloses a flavor enhancement for strong-flavor rapeseed oil. The method comprises the following steps: removing impurities from a raw material rapeseeds, and stir-frying and pressing the seeds to obtain crude rapeseed oil and rapeseed cakes; breaking the rapeseed cakes to obtain rapeseed cake powder; adding water to the rapeseed cake powder, performing uniform mixing, distilling the obtained solution, collecting steam distilled in the distillation process, and condensing the steam to obtain a condensate; adding edible salt to the condensate to obtain a saline solution having aconcentration of 10-15%, uniformly mixing the saline solution with the crude rapeseed oil, performing hydration, and removing the obtained hydrated layer to obtain an oil layer; and washing the oil layer with water, and dehydrating the washed oil layer to obtain the strong-flavor rapeseed oil. The method fully utilizes the flavor components of the rapeseed oil in the rapeseed cakes to make the rapeseed oil product have a strong flavor, and combines rapeseed oil flavor enhancement with hydration degumming to simplify the production process and save water for production, and the flavor components of the rapeseed oil are fully dissolved in the rapeseed oil in the hydration degumming process in order to improve the economic benefit of rapeseed oil production.

The invention belongs to the recycling field of phosphoric acid (salt) in the production process of activated carbon, and particularly relates to a phosphate radical ion recycling method for activated carbon washes with the method of phosphoric acid, which includes the following steps: enabling calcium hydroxide to be prepared into calcium hydroxide suspension, adding the suspension to washes generated in the activated carbon production process with the method of phosphoric acid, fully mixing for reaction to form calcium phosphate sediment, filtering, enabling the calcium phosphate sediment to be prepared into pulp, adding concentrated sulfuric acid, fully mixing for reaction to generate phosphoric acid and calcium sulfate sediment, and filtering and recycling phosphoric acid. The phosphate radical ion recycling method utilizes reaction between calcium hydroxide and waste water containing phosphate radical ions to generate high-purity calcium phosphate sediment and recyclable water with low content of phosphate radical ions, thereby recycling phosphate radical ions and saving water for production. The phosphate radical ion recycling method is simple in process operation, easy to popularize industrially and low in production cost, and has remarkable economic benefits. Raw materials can be obtained easily.

The invention discloses a method for synthesizing L-ascorbyl palmitate, which comprises the following steps: grinding L-ascorbyl palmitate into fine powder; at 25 to 20 DEG C, slowly adding the L-ascorbyl palmitate fine powder into pure sulfuric acid so that the L-ascorbyl palmitate fine powder dissolves in the sulfuric acid; adding L-ascorbyl palmitate in an amount which is 0.95 times the molar number of L-ascorbyl palmitate into the reaction solution, adding dehydrating agent into the reaction solution, and continuing reaction for 6 to 7 hours; pouring the generated reaction solution into broken ice, filtering out coarse product, drying and washing with water; heating the prepared coarse L-ascorbyl palmitate, dissolving the coarse L-ascorbyl palmitate in ethyl acetate, and decolorizing and purifying the solution by particle active carbon; and subjecting the obtained solution to reduced-pressure distillation and concentration, cooling feed liquid to 0 DEG C and discharging to obtain L-ascorbyl palmitate white powder. When the method disclosed by the invention is used, the production efficiency can be improved greatly, the production period is shortened, the product yield is increased, the product quality is improved, and the dose of palmitic acid is reduced (only 5 percent more is required).

The invention discloses a new circulating utilizing method of mother liquid in the methyl naphthol and beta-naphthol manufacturing course, which comprises the following steps: adding little water in the dilute stove before putting alkali fusing material; making solid sodium sulfite display flow crystal pattern; transmitting into filter autoclave; filtering; separating mother liquid through sulfonated sodium salt; transmitting into filter autoclave; washing; filtering; combining filtrate; transmitting into acidifying segment; entering subsequent course; obtaining the product; recycling the sodium sulfite to manufacture naphthol.

An automatic circulating water descaling system for hot-rolled bar and wire steel, the invention discloses an automatic circulating water descaling system for billets. It is composed of automatic backwashing water filter, high-level water tank, pneumatic jet valve, plunger pump descaling box and electric control cabinet. Its working method is: the descaling water enters the high-level water tank after being filtered. The signal generated by detecting the water level of the water tank by the magnetic float level gauge controls the closing of the electric water supply valve. The descaling water enters the descaling box header after being pressurized by the plunger pump after a steady flow. When the hot metal detector first detects the temperature of the billet head, it sends out a signal to control the closing of the pneumatic injection valve. The descaling water falls into the descaling box after descaling. When the hot metal detector detects the temperature of the tail of the billet, a signal is sent to control the automatic opening of the pneumatic injection valve. The water in the descaling tank is circulated to the head tank. Because the system is equipped with pneumatic injection valve, electric water supply valve, magnetic float liquid level gauge, etc., the degree of automation is greatly improved. Because of the return water pipeline, the descaling water can be recycled, which saves a lot of production water and reduces the production cost of the enterprise.

The invention relates to a recycling method of leading waste water into a grinding chamber body in a MDF production. The waste water extruded from a defibrator in the MDF hot grinding technology is filtered and deposited. The temperature of the waste water is controlled within 20 to 70 degrees centigrade. The waste water is transmitted to the grinding chamber body of the defibrator to be recycled. The method solves not only the difficult processing problem of the waste water extruded from the defibrator but also the water shortage problem of the hot grinding process, saves production water supply, recycles lignin, hemicellulose and other condensates in the waste water, makes the best use of energy resources, saves the cost of processing the waste water and has the obvious characteristic of saving energy, and environmental protection and good economic and social benefit.