182results about How to "Improve decolorization efficiency" patented technology

The composite flocculant for treating printing and dyeing effluent consists of natural high molecular water soluble chitosan and polyaluminium chloride. The usage of the composite flocculant in treating printing and dyeing effluent includes regulating effluent to pH 6-8, and throwing composite flocculant in the amount of chitosan in 1-2 ppm and polyaluminium chloride in 100-250 ppm to result in printing and dyeing effluent decolorizing rate up to 91 %. The composite flocculant of the present invention has simple compounding process, easy use, low cost, small thrown amount, excellent decolorizing performance, fast deposition, small sludge amount, easy biodegradation, less secondary pollution of water and thus wide application foreground.

The invention discloses a method for synthesizing a citric acid ester type compound, which belongs to the technical field of chemical synthesis. The method comprises the following steps of: using citric acid and fatty alcohol as main raw materials, and using benzene sulfonic acid or amino benzene sulfonic acid as a catalyst; and performing esterification and the purification processes of acetylation, neutralization, washing, drying, distillation and the like. The catalyst has rich sources, a low cost and high activity, can be separated from an esterification liquid easily after the neutralization, is coke-free during the distillation, has less corrosion to equipment, and is safe and environment-friendly; the water generated by the esterification is separated out by adopting a binary heterogeneous separation technique, and no water separating agent is additionally added; and acetyl citric acid ester is produced by adopting an esterification-acetylation continuous synthesis method, the flow is greatly simplified, and a synthesis process is shortened. The citric acid ester prepared by the method has the advantages of high quality, high purity, low degree of color and wide applicationrange.

The invention discloses a method for recycling textile dyeing and finishing wastewater, which comprises the following steps of: regulating the pH of the textile dyeing and finishing wastewater in a regulating tank to be 7.0 by using acidic solution, performing coagulative precipitation in a coagulative precipitation tank by using an inorganic flocculating agent, and performing anaerobic treatmentin a high-efficiency anaerobic reactor; performing anaerobic / anoxic and aerobic circulation treatment in a multi-stage circulation aerobic treatment system, wherein the multi-stage circulation aerobic treatment system consists of anaerobic / anoxic reaction tanks A and aerobic reaction tanks O in an A-O-A-O-A-O-A staggered series connection mode; performing coagulative precipitation in a high-efficiency air floatation coagulative precipitation tank; and performing ozone oxidation and disinfection in an ozone oxidation tank to obtain recycled water. Compared with the conventional physical-chemical method, the technology has the advantages that: operating cost is obviously reduced, and over 30 percent of economic benefit is achieved. The quality of the treated water is high, and 70 percent ofrecycling rate can be achieved.

The invention discloses a uniform-hole amine resin and a preparation method and an application method thereof, belongs to the technical fields of decoloring resin synthesis of a novel hole structure, active ingredient separation and purification of a natural plant and the like, and in particular relates to a decoloring resin. The appearance characteristic and hole structure parameters of the uniform-hole amine resin are that the resin is spherical, faint yellow and semi-transparent; the grain diameter of the resin is 0.3 to 0.7mm; and the water content of the resin is 50 to 60 percent. The invention also discloses the preparation method and the application method for the uniform-hole amine resin. In the preparation of the uniform-hole amine resin, a non-good solvent serving as a porogen is not needed in the process of synthesizing the traditional macroporous resin; and a creative double-functional-group functional reagent and a polystyrene resin undergo a secondary crosslinking chemical reaction to generate a uniform-hole mesh structure, which has the structure characteristics of high crosslinking degree and high functional group content. For the decolouring application in plant polysaccharide, the decolouring rate of pigment in a plurality of plant polysaccharide extracts is over 95 percent and the recovery rate of the polysaccharide is over 90 percent only by one operation step, namely, adsorption; and the preparation method has the advantages of environmental-friendly process, low production cost, simple and convenient operation, high decolouring efficiency and suitability for large-scale industrial application.

The invention provides a decoloring method for wastewater with low treatment cost. The method comprises the steps of: using an electrochemically active microorganism enriching carbon material as an anode and an air electrode containing an alpha-FeOOH iron source as a cathode; degrading wastewater in an anode chamber by the electrochemically active microorganisms on the surface of the anode and transferring electrons to the surface of the anode by extracellular electron transferring capacity of electrochemically active microorganisms; then, providing the electrons to the cathode through an external circuit, and meanwhile reducing the electrons by surface oxidation of the air cathode to generate H2O2; carrying out heterogeneous Fenton reaction with the iron source alpha-FeOOH carried by the cathode; realizing heterogeneous bioelectricity Fenton process of alpha-FeOOH; and generating hydroxyl free radicals to decolor wastewater of a dye. The method provided by the invention is not only suitable for treating wastewaters such as the dye, but also suitable for treating various organic wastewaters. The method has a wide application prospect in actual application.

The invention relates to wastewater treatment application technologies and aims to provide a method for decolorizing printing and dyeing wastewater by adopting co-immobilized white-rot fungi. The method comprises the following steps: inoculating a seed solution containing any two or more white-rot fungi into a liquid culture medium with an immobilization carrier at a volume ratio of 5-20%, and then performing shake culture at 25-30 DEG C for 5-7 days; after covering the immobilization carrier with thalli, performing separation to obtain a carrier fixed with the white-rot fungus thalli, and putting the carrier into the printing and dyeing wastewater, thereby realizing decolorization treatment. The method fully utilizes enzymes generated by the white-rot fungi with different species and complementary enzyme systems to degrade and decolorize the printing and dyeing wastewater, can realize complete degradation of printing and dyeing wastewater pollutants, and can realize repeated decolorization. The method can be used for decolorization treatment of the printing and dyeing wastewater containing dyes with different structure types, and is high in decolorization efficiency. As the pollutants are degraded by the white-rot fungi, degradation products do not cause secondary pollution to a water body.

The invention relates to a preparation method of TiO2 sol with photo-catalyst activity, and the application thereof in dye decoloration, pertaining to the cross field of textile chemical technology and environmental technology. The preparation method of TiO2 sol provided by the invention adopts titanate, an alcoholic solvent, water and a catalyst to prepare the TiO2 sol, and the solution is added with additives, such as H2O2, Fe<3+>, Cu<2+>, Cl<->, Br<-> and the like. The TiO2 sol is taken as a catalyst and can effectively decolor active dye, direct dye, acid dye, cationic dye and the like. under the irradiation of ultraviolet lights with the power of 40W and the wavelength of 253.7m.

The invention discloses a method for decolorizing tea seed oil. The method comprises the following steps of: degumming, deacidifying, desolventizing, decolorizing, dewaxing and deodorizing. An auxiliary decolorizing process is adopted according to the characteristics of dark color and high decolorizing difficulty of the tea seed oil, and the tea seed oil is acidified before being decolorized, so that decolorizing efficiency is improved, the using amount of argil can be reduced by 1.5 to 2 percent, and the decolorizing cost of the tea seed oil is effectively reduced.

The present invention is two-stage method of applying white rot fungus to degrade hard-to-degrade environment pollutant, and belongs to the field of environmental pollutant treating technology. Based on the research of the biochemical characteristic of white rot fungus, the present invention proposes intermittent running mode including two separated stages of growth and degradation. The present invention adopts high temperature culture and normal temperature degradation, agricultural waste corn cob and timber as nutrients source, high nutrients concentration for growth and low nutrients concentration for degradation and natural ventilation in growth stage, and thus has low power consumption and low cost. Adding carrier can maintain higher exocellular enzyme concentration, speed reaction, maintain higher decolorizing efficiency and separate mud from water. The present invention has good oxygen supply, good hydraulics characteristic and high hetero bacteria pollution resistance.

The invention discloses a compound decolorizing flocculant and a preparation method thereof. The compound decolorizing flocculant is prepared from the following raw materials by weight percent: 10-15%of polyaluminum chloride, 1-3% of ferric chloride, 25-30% of poly dimethyl diallyl ammonium chloride, 15-20% of dicyandiamide formaldehyde resin and the balance of deionized water. The compound decolorizing flocculant is prepared by combining inorganic and organic matters, has the characteristics of being high in decoloration efficiency and good in flocculation effect, and also has the characteristics of being lower in investment cost, low in operating cost, low in effluent chroma, and the like; after printing and dyeing wastewater is treated by means of the compound decolorizing flocculant,the effluent can reach the A-level standard requirements of chroma being lower than 30 times and suspended solids being less than 20mg / L.

The invention discloses magnetic immobilized spore laccase and preparing method and application thereof and belongs to the field of immobilization technologies and waste water processing. According to the magnetic immobilized spore laccase and the preparing method and application thereof, Fe3O4 magnetic nanoparticles serve as a carrier of the immobilized spore laccase, and the magnetic nanoparticles are directly fixed to the surfaces of spores through a bifunctional crosslinking agent; the magnetic immobilized spore laccase can be quickly separated through an external magnetic field and recycled. According to the magnetic spore laccase and preparing method, surface modification does not need to be conducted on the magnetic nanoparticles, the process just includes spore preparation, immobilization processing and collection, the operation requirement of the preparing process is greatly lowered, and the preparing cost of the immobilized spore laccase is further greatly saved. The magnetic immobilized spore laccase can be directly used for decolorizing of dyes, and high decolorizing efficiency is kept.

The invention discloses a method for removing chlorophyll in microalgaes. The method comprises the following steps: mixing microalgae powder or wet algae mud with a material concentration (mass-volume ratio) of 0.5-5.0% with a destaining solution, and reacting for 0.5-3.0 hours at a temperature of 40-70 DEG C, so that chlorophyll can be removed, wherein a preparation method of the destaining solution is implemented by mixing low carbon alcohol with an alkaline solution with a concentration of 0.5-2.5% in a certain volume ratio. The method disclosed by the invention can remove high-content chlorophyll in microalgaes in an efficient, simple, safe and low-cost mode, thereby effectively solving the chlorophyll pollution problem of microalgae products; and the destaining solution can be used for preparing sodium copper chlorophyllin, microalgae powder or wet algae mud after chlorophyll removal can be applied to the extraction and preparation of microalgae oil, proteins, polysaccharides and carotenoids, and related products can be applied to the development of health products, cosmetics, biological energy sources, feeds, baits and the like.

The invention relates to a composite material for decoloring treatment during the polysaccharide refining process. A preparation method of the composite material comprises the following steps of: washing, drying, crushing, mixing a sieved peanut shell powder with a phosphoric acid solution, adding an aqueous solution of an aluminium-containing compound, stirring and kneading, carrying out extrusion moulding on moulding equipment, putting into a drying box for drying, putting into an electric resistance furnace to carry out heat treatment without air so as to obtain a granular material, dissolving silver nitrate and glucose in water, continuously stirring, adding the above granular material therein, continuously stirring and mixing, removing a filtrate, putting into the drying box for drying, and carrying out heating reduction to prepare the polysaccharide decolouring composite material. By the utilization of the material for decoloring a colored polysaccharide aqueous solution of plants such as ginseng, matrimony vine, pumpkin, mushroom, Mythic Fungus and the like, the decoloring efficiency is high, the loss of polysaccharide is little, and the decoloring material is easy to regenerate.

The invention provides novel compound decolorant and a wastewater decolorizing treatment method applying the same. The novel compound decolorant is reasonable in component, wide in raw material source, low in application cost, high in decolorizing efficiency, good in decolorizing effect, high in safety, environmentally friendly, wide in applicability and capable of being applied to multiple fields and has extremely high popularization value. The wastewater decolorizing treatment method applying the same is reasonable, simple and convenient to apply.

The invention discloses an immobilized pellet of Shewanella Oneida and the application of Shewanella Oneida in treating printing and dyeing wastewater. The invention proposes for the first time that Shewanella oneida is used in the treatment of printing and dyeing wastewater, and provides a new way for the decolorization of printing and dyeing wastewater. The decolorization efficiency of Oneida Shewanella to printing and dyeing wastewater is particularly outstanding, so the present invention makes Oneida Shewanella into immobilized pellets, and the immobilized pellets not only effectively improve the decolorization efficiency of Oneida Shewanella. Reuse rate, and greatly improve the decolorization efficiency of printing and dyeing wastewater, the highest decolorization efficiency can reach 43.31%.

The invention discloses an automatic liquid glucose carbon addition type syrup color removal method. On the basis of an access that a primary color removal tank, a primary plate frame filter machine, a secondary color removal tank, a secondary plate frame filter machine, a hybridization front tank and a precision filter are sequentially connected in series, a carbon addition tank and a carbon entraining tank are additionally arranged; the hybridization front tank, the carbon addition tank and the carbon entraining tank are sequentially connected in series, a liquid outlet of the carbon entraining tank is communicated with the primary color removal tank and the secondary color removal tank through pipelines separately, a flow control valve, a reflux pump, a carbon addition pump and a carbon entraining pump are arranged on each pipeline, the carbon addition tank and the carbon entraining tank are each provided with an electric stirring paddle, and operating parameters of the flow control valves, the pumps and the electric stirring paddles are automatically controlled by a numerical control system; the method comprises the steps that the hybridization front tank returns liquid glucose, carbon addition, buffering and prestoring are performed, carbon entraining and color removal are performed, and a mixed solution obtained after color removal is pumped into the hybridization front tank after being filtered to be subjected to ion exchange. According to the method, automatic, continuous and uniform release of activated carbon can be achieved, the original concentration of the liquid glucose is kept, steam consumption is lowered, labor intensity is lowered, and the production cost is reduced.

The invention discloses a using method for oil shale ash, which comprises the following steps: grinding the oil shale ash; adding powder of the oil shale ash and alkali liquor into a caustic treater according to the mass ratio of 1:1 to 1:5; carrying out stirring, dissolving and boiling for 1 to 3 hours at a temperature of between 70 and 95 DEG C; filtering after dissolving and boiling process iscompleted; washing filter residue by using distilled water until the pH value is less than 9; drying the washed filter residue; uniformly mixing the dried washed filter residue with solid alaline matter according to the mass ratio of 1:1 to 1:3; carrying out baking and activating on the mixture for 1 hour at a temperature of between 650 and 750 DEG C; cooling the obtained product; and washing thecooled obtained product by using dilute acid, washing the obtained product by deionized water and carrying out drying, grinding and sieving sequentially to prepare a decolorizer. Compared with the prior art, the invention has the characteristics of simple pretreatment of the oil shale ash and preparation process, easy control, high decolourizing efficiency which can reach over 90 percent, better effect of separating the decolorizer from the oil, and wide raw material source, and also has the characteristics of belonging to the deep processing and utilization of wastes, being beneficial for reducing the preparation cost and being capable of sufficiently and reasonably utilizing the oil shale ash.

The invention discloses a refined sugar decolorization treatment device and a decolorization, backwashing, regeneration and cleaning process. An operation system comprises a syrup pump, a decolorization sugar liquid pump, an ion exchange bed group, a dilute sugar liquid tank, a concentrated sugar liquid tank and a decolorized sugar liquid tank. A regeneration system and a reverse regeneration system are communicated with a first pipeline and a second pipeline through pneumatic ball valves and are used for regenerating the ion exchange bed group. The regeneration system comprises a heat exchanger, a heat preservation water tank, a regeneration water pump, a salt dissolving tank, a salt liquid pump, a bag type filter, a desalted water tank, an alkali discharging pump, an alkali storage tank,an alkali metering tank and an alkali metering pump. The reverse regeneration system comprises an ejector, an acid metering box, an acid storage tank and an acid discharging pump which are sequentially communicated. The device has the advantages of small occupied area, no need of external cleaning equipment, good treatment effect, stable removal rate and the like.

The invention belongs to the technical field of papermaking industry and specifically relates to a papermaking wastewater treatment process. Papermaking wastewater is treated by using a coagulation-microelectrolysis-two-stage UASB-biological contact oxidation-ion exchange-activated carbon-ultraviolet disinfection combined process, so that refractory organic matters, suspended matters, SS and microorganisms in the treated papermaking wastewater are efficiently removed. Meanwhile, resin is rapidly regenerated within a short period by using a regeneration solution provided by the invention, and the attenuation of the resin can be delayed due to the addition of sophorolipids and trehalose ester in the regeneration solution, so that the service life of the resin is greatly prolonged, the wastewater decoloration efficiency is increased, and the operation cost is reduced.

The invention relates to a rectifying column for discoloring solvent oil. The rectifying column comprises a rectifying column body; a first perforation plate, a second perforation plate and a third perforation plate are arranged in the rectifying column body from top to bottom; a solid adsorbent is filled between the first perforation plate and the second perforation plate to form an adsorbing section; and packing is filled between the second perforation plate and the third perforation plate to form a rectifying section. The rectifying column is simple in structure and convenient to use; the adsorbing section and the rectifying section are combined in the rectifying column, by which the discoloring efficiency of the solvent oil can be greatly raised, a large number of adsorbents can be saved, and thus the cost can be effectively saved.

The invention discloses a device and a method for regeneration of powdered activated carbon. The device comprises a furnace body, wherein a retractable furnace door is arranged on the furnace body; an internal hollow hearth is arranged inside the furnace body; insulating layers are arranged at the four walls and the periphery of the top part of the hearth; heating wires are embedded in the insulating layers. The device is characterized by also comprising an exhaust and tail gas combustion treatment system, an intake valve, a bracket structure, more than one drawer-type box body and a gas outlet valve, wherein the bracket structure is fixedly arranged inside the hearth; the drawer-type box body is detachably arranged on the bracket structure; the exhaust and tail gas combustion treatment system is fixedly arranged at the top part of the furnace body; the intake valve is fixedly arranged at the top of the furnace body; the gas outlet valve is fixedly arranged at the bottom of the furnace body. Compared with the prior art, the regeneration treatment efficiency can be greatly improved, energy consumption and time are saved, and the operation is simple and feasible.

The invention relates to a material preparation method, specifically a method for preparing manganese dioxide cellulose nanofiber hybrids. Cellulose is prepared into a cellulose suspension, which is prepared into cellulose nanofibers with an ultrasonic cell pulverizer at 1000w for 1 hour; 10mmol alkaline Potassium permanganate was dissolved in 100 mL of water, and 300 mL of 1 wt% cellulose nanofiber was added thereto; stirred at room temperature for 8 hours, washed with water to remove impurities, and concentrated into a slurry. The raw material cellulose of the method has a wide range of sources and is a green and sustainable resource. Manganese dioxide is used to grow on the nanocellulose fiber in situ without adding a reducing agent, and the synthesis cost is low and the process is simple. By adjusting the pH, the manganese dioxide / cellulose nanofiber hybrid can realize the conversion of the adsorption of methylene blue and oxidative decolorization, and the prepared manganese dioxide / cellulose nanofiber hybrid has high decolorization efficiency of methylene blue, and the amount of decolorizing agent used is small . It has good application prospects in industrial wastewater treatment and environmental restoration.

The invention discloses a discoloring Shiva engineering bacterium with multiple functions of fluorescent tracing and discoloring and a construction method of the discoloring Shiva engineering bacterium, and aims at providing a genetic engineering bacterium that has high-efficiency discoloring capability of three major dyes including azo, anthraquinone and triphenylmethane as well as the fluorescent tracing function. The invention adopts the technical proposal that combines a foreign fusion gene SPrtpmD' into a discoloring Shiva bacterium S12; wherein, the fusion gene SPrtpmD' is formed by connecting a discoloring enzyme modifier gene tpmD' of the triphenylmethane dye after a NAD(P)H dehydrogenase gene initiator sequence of the discoloring Shiva bacterium S12, and the discoloring enzyme modifier gene tpmD' of the triphenylmethane dye is formed by adding an SD sequence before a 5'-end initiation codon of the discoloring enzyme modifier gene tpmD' of the triphenylmethane dye and adding a small label that can chelate 6 encoding amino acids of a diarsenic fluorescent dye before a 3'-end termination codon. The discoloring Shiva engineering bacterium with multiple functions of fluorescent tracing and discoloring can be used for environmental reparation and administration.

The invention relates to a preparation technology of high-transparency squid skin collagen, and aims at solving the defects of the quid skin collagen preparation method in the prior art that the operation is complicated and the prepared squid skin collagen is of dark color. The preparation technology comprises the following steps of: a) degreasing; b) eliminating impure protein; c) extracting the collagen: adding the squid skin without impure protein into the pure water of which the mass is 10-12 times that of the squid skin, regulating pH to 7.8-8.2, adding trypsase of which the mass is 0.08-0.12% of that of the squid skin at 52-56 DEG C, hydrolyzing for 90-120min, and executing enzyme deactivation for the collagen extract stock solution, obtained by coarse filtration, in water bath at 95-100 DEG C for 8-12min; d) decoloring: regulating pH of the collagen extract stock solution to 8.0-8.2, adding chelating agent and stirring evenly, further adding hydrogen peroxide of which the mass is 0.6-0.8% of that of the collagen extract stock solution, at 50-55 DEG C, decoloring 8-10h, continuously stirring during the decoloring process, and finally adding the manganese dioxide to remove the residual hydrogen peroxide; e) drying. The preparation technology is simple in operation and low in processing technology, and the prepared collagen is high in transparency, light in color and high in economic value.

The invention belongs to the technical field of biological engineering and food, and discloses a fish oil degumming and decolorizing method. The fish oil degumming and decolorizing method comprises the following steps: (1) preparing an enzyme solution with phospholipase or / and lipase concentration of 1 to 5000 U / mL, adding soluble salt, a hydrophilic solvent and fish oil into the enzyme solution,and preparing a three-liquid-phase system; (2) enabling the prepared three-liquid-phase system to react under a stirring condition, after the reaction, standing or centrifuging to form four layers, and collecting a fish oil phase on the topmost layer; (3) adding the fish oil phase into alkali liquor, then adding a hydrophobic organic solvent, standing, collecting an upper-phase, recycling the hydrophobic organic solvent, extracting, and collecting the supernatant, thus obtaining the refined fish oil. The invention provides the method for synchronously degumming and decolorizing the crude fishoil by combining the enzyme and multiple liquid phases, so that the process is simplified, the treatment time is short, the cost is reduced, and the method is economical and feasible.

The invention relates to a cordyceps militaris polypeptide and a preparation method thereof. The preparation method comprises the following steps: S1) drying and crushing cordyceps militaris and then adding into distilled water, cooking for 1-2h, and then cooling to room temperature, thereby obtaining a cordyceps militaris aqueous solution; S2) regulating the pH value of the cordyceps militaris aqueous solution to 5-9, and then adding a compound enzyme for performing enzymolysis on the protein and cellulose in the cordyceps militaris aqueous solution, thereby obtaining an enzymatic hydrolysate; and S3) performing filtering decolorizing treatment on the enzymatic hydrolysate so as to obtain a decolorized solution, and then sequentially performing membrane filtration, concentration and spray-draying on the decolorized solution, thereby obtaining the cordyceps militaris polypeptide. According to the preparation method provided by the invention, the polypeptide matter in the cordyceps militaris can be effectively extracted, the active polypeptide in the cordyceps militaris can be effectively utilized, and the extracting efficiency is high.

The invention discloses a magnetic-force material-pushing-type rapid decolorization device for producing an epoxy soybean oil plasticizer. A first magnet in a rotating state alternately attracts and repels a second magnet, so that a movable rod drives a material pushing plate to make reciprocating movement, and therefore the decolorization effect and efficiency of epoxy soybean oil raw materials,hydrogen peroxide and alkali liquid are further improved; through a stirring function of stirring blades and a U-shaped mixing frame, the decolorization effect and efficiency are more obvious, and thegood practical effect is achieved; hydrogen peroxide swirls along the inner wall of a tank body through a hydrogen peroxide outer extension pipe and is injected into the inner lower side of the tankbody, the epoxy soybean oil raw materials are injected into the tank body through a feeding hopper, and therefore hydrogen peroxide swirling along the inner wall of the tank body can be quickly mixedwith the epoxy soybean oil raw materials; hydrogen peroxide evenly falls on the epoxy soybean oil raw materials in the tank body through dropping holes, the mixing efficiency is improved, and the decolorization efficiency is improved.

The invention provides a decolorant for the textile printing and dyeing wastewater. The decolorant comprises the following components in weight part: 2-5 parts of calcium carbonate, 1-5 parts of active carbon, 5-15 parts of polymeric ferric sulfate, 1-8 parts of macroporous resin D301, 1-3 parts of macroporous resin D101, and 2-5 parts of anion exchange resin D290. The decolorant is simple in preparation method, convenient in operation and low in cost. The macroporous resin and the anion exchange resin are added into the decolorant, so that the decolorization efficiency improved. The decolorization efficiency can be up to over 80%.