419results about How to "Promote flocculation" patented technology

The present invention provides a novel process for extraction, purification and concentration of polyphenol substances from whole grapes, grape seeds and grape pomace without the need for membrane filtration. Aspects of several embodiments of the novel processes include hot water extraction, a dual pH treatment of the hot water extracts, and the uses of a copolymer of trimethylolpropane trimethacrylate as an adsorbent resin to maximize the concentration and purification of the beneficial polyphenolic substances.

The invention discloses a method of preparing high-purity vanadium pentoxide from roasting-method vanadium solution. The method comprises the following steps: adding a purifying agent into the roasting-method vanadium solution, wherein the purifying agent is polyaluminium chloride, magnesium chloride or calcium chloride, or the purifying agent is polyaluminium chloride and magnesium chloride, or polyaluminium chloride and calcium chloride; uniformly stirring the roasting-method vanadium solution containing the purifying agent, standing for settling, then filtering, and adding ammonium salt into the filtrate to precipitate vanadium; and finally, calcining meta-ammonium and deaminizing to prepare vanadium pentoxide with the purity being higher than 99.5%. Polyaluminium chloride serving as the purifying agent can be used for polymerizing jellies with several molecules into large particles with several tens of thousands of molecules, even hundreds of thousands of molecules. The large-particle molecular polymer is easy to settle in the vanadium solution and can be separated from the solution. The method provided by the invention has the advantages that the consumption of polyaluminium chloride is low, the flocculation process is simple, the flocculation capacity is strong, the flocculation speed is high, pollution is hardly caused and the cost is low.

The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculent and / or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

An environmentally safe additive and vehicle system are provided for water-based and oil-based printing inks, paints, coatings and adhesives which can be rapidly transferred, dispersed, dispensed, spread, dried and cured. The low cost, stable additive and vehicle system enhance multiple color, high speed printing with sharp, highly defined images and superior quality, and can be used on many different types of substrates, such as paper, paperboard, cardboard, clay coated board, foil, plastic, glass, metal, wood and composites. The additive may be formed by the reaction product of a photoinitiator, such as an UV-activated polyelectrolyte, and a monomer, such as an acrylate or a methacrylate in an aqueous solution. In other embodiments, the additive is formed from a carboxylic acid or anhydride and alkylalkanolamine monomer or a dialkylaminoalkyl acrylate or methacrylate monomer in an aqueous solution.

A composite disinfectant for culturing aquatic products contains potassium (or sodium) perferrite, excipient, and / or pH regulator, stabilizer, adhesive, talc powder and magnesium stearate. Its advantages are high effect on disinfecting, enriching oxygen in water, and removing heavy metals, organic substances and harmful suspended substances, and no poison.

The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and / or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

The invention relates to a chemical bond connected strong cationic grafted amphoteric chitosan flocculant which is obtained by grafting strong cationic monomers to amphoteric carboxymethyl chitosan in an acidic condition through copolymerization. The chemical bond connected strong cationic grafted amphoteric chitosan flocculant is in such a structure as follows: in the chemical bond connected strong cationic grafted amphoteric chitosan flocculant, degree of substitution of a carboxylic acid group is 5-90%, methylacryloyl oxyethyl trimethyl ammonium chloride is a strong cationic monomer, and polymethylacryloyl oxyethyl trimethyl ammonium chloride accounts for 5-80% by mass of the chemical bond connected strong cationic grafted amphoteric chitosan flocculant. The flocculant provided by the invention has amphoteric characteristics, so that not only is the flocculant property improved, but also the dissolving property is improved. The raw material chitosan is wide in source, natural, non-toxic and degradable. The flocculant has multiple functions of good flocculation effect, metal ion absorption, bacteriostasis, deodorization, decoloration, and effective reduction of COD (Chemical Oxygen Demand) value and the like.

The invention discloses a preparation method of grafted amphoteric starch flocculants, which is implemented by carrying out graft copolymerization on cationic starches, acrylamide and an acrylic acid so as to obtain a grafted amphoteric starch flocculant, and the grafted amphoteric starch flocculant has the following structure shown in the abstract. The method disclosed by the invention has the following advantages that because a molecular chain is rich in anion-cation groups and has amphoteric characteristics, not only is the flocculation property of materials improved, and also the dissolving property of starches is improved; high polymer materials are wide in resource and low in cost, so that the grafted amphoteric starch flocculant has a high performance price ratio; starches have biodegradability and are non-toxic, so that starches do not produce secondary pollution to water bodies; the grafted amphoteric starch flocculant has various good effects such as flocculation, metal ion adsorption, bacteriostasis, deodorization, decoloring, and capability of effectively reducing the COD value; the grafted amphoteric starch flocculant has a characteristic of high efficiency, and is low in putting amount, and the putting amount is generally 0.1-10mg / L; and the the grafted amphoteric starch flocculant is suitable for treating water bodies with different charges, good in salt resistance and wide in applied pH range, and can be applied when the pH value is 1-12.

The invention relates to a combination type efficient sludge dewatering conditioning method and belongs to the field of sludge dewatering preprocessing. According to the technical scheme, the method includes performing acidification treatment on sludge to be dewatered through concentrated sulfuric, adjusting the pH of a sludge system to range from 3.5 to 5, and stirring for 15 to 30min through a stirring blade; adding strong oxidizing agent, namely potassium ferrate, with the content of 0.2% to 4% of the total solid sludge into acidified sludge after water dissolving, stirring for 2min in the speed of 200 to 300 r / min rapidly, and stirring for 20 to 40min in the speed of 80 to 150 r / min slowly; adjusting the pH to range from 3.5 to 5 through concentrated sulfuric, adding ferrous sulfate with the content of 4% to 8% of the total solid sludge after preparing the ferrous sulfate as solution with the concentration of 20% to 50%, after stirring and scattering, adding H2O2, with the concentration of 30%, with the content of 4% to 8% of the total solid sludge, and reacting for 30 to 50min completely during slow stirring; finally, adding quicklime with the content of 3% to 8% of the total solid sludge into the sludge conditioning system, adjusting the system pH to range from 6 to 8, scattering the quicklime evenly, and dewatering.

The invention relates to the field of functional materials, particularly a preparation method of an adsorbent for acid dye wastewater treatment. The invention mainly solves the technical problem that dyeing wastewater can not be easily decolorized, can not achieve the discharge standard and the like in the prior art. The preparation method comprises the following steps: putting 8-10g of beta-cyclodextrin into 1-2g of citric acid monohydrate, and adding 1g of PEG-400 and 0.25g of sodium dihydrogen phosphate to obtain a beta-cyclodextrin polymer by polymerization; adding a silane coupling agent into a chitosan solution; and cross-linking the beta-cyclodextrin polymer with the chitosan to obtain a beta-cyclodextrin-chitosan porous membrane, wherein the mol ratio of the chitosan to the beta-cyclodextrin polymer is 1:3..

The invention discloses a hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent. The hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent is characterized by being obtained by carrying out hydrolysis reaction onto graft carboxymethyl cellulose under alkali condition, wherein the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent has the structure shown in the specification; the mass of polyacrylamide is 5%-65% of that of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent; and the mass of the polyacrylic acid is 5%-70% of the that of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent. The hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent disclosed by the invention has the triple characteristic of carboxymethyl anionic group, polyacrylamide and polyacrylic acid. Moreover, the carboxymethyl anionic group, polyacrylamide and polyacrylic acid are linked by chemical bonds, so that the molecular weight of carboxymethyl cellulose is improved and the bonding and bridging flocculation is enhanced. Besides, the soluble pH range of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent is expanded due to the existence of the grafting chain, and therefore, the pH sensitivity of the flocculation effect of carboxymethyl cellulose is effectively restrained.

Acid mine drainage and surface waters containing sulfate are processed by an electrocoagulator to make aluminum or other polyvalent metal sulfate, which acts as a coagulant for solids suspended in the waters. The process thus removes and puts to good use highly undesirable sulfate anions, obviating combinations with barium and other scale forming metals when the fluids are used in well drilling for other purposes associated with hydrocarbon recovery. Well fluids may be treated with the acid mine drainage including the sulfate coagulant made in it. Efficiency of the process may be enhanced by the addition of an oxidizing agent and / or by passing the fluid through a cavitation device or other mechanism to improve mixing, enabling the process to handle large quantities of acid mine drainage and fluids handled in hydrocarbon recovery, particularly from shale formations.

The filtering method for nano molecular sieve features that the method includes adding alkali medium, non-electrolyte and water into molecular sieve slurry. The added amount of the alkali medium is such that the mixture has pH not lower than 12; and the volume ratio among molecular sieve slurry, non-electrolyte and water is 1 to 1-5 to 0-2. The said method can inhibit flocculation of un-crystallized SiO2 effectively.

The invention relates to an ozone oxidation treatment leachate nanofiltration concentrate treatment method. The method comprises the following steps: adding a leachate nanofiltration concentrate, iron trichloride and polyacrylamide to a stirring tank, mixing, and allowing a supernatant in a precipitation pool to flow into a clear liquid collecting tank; adding the supernatant to the top of an ozone reaction tower through an elevator pump, sending an ozone gas generated in an ozone generator to the lower portion of the ozone reaction tower, allowing the supernatant to be in contact with the ozone gas in a cycle manner in order to carry out an oxidation reaction, discharging oxidized wastewater to an intermediate water tank, and storing the oxidized wastewater in the intermediate water tank; and conveying wastewater in the intermediate water tank to a denitrification tank through a water feed pump, continuously carrying out plug-flow aeration in the denitrification tank, carrying out a denitrification reaction on wastewater, allowing obtained wastewater to automatically flow into a nitrification tank, carrying out blast aeration to carry out a nitrification reaction, lifting and conveying wastewater obtained after the nitrification reaction to an ultrafilter membrane assembly through a conveying pump, carrying out solid-liquid separation, returning a treated ultrafiltration concentrate to the denitrification tank, and discharging clear liquid outlet water. The method has the characteristics of simple process route, high treatment cost performance and no secondary pollution.

The invention relates to a preparation technology of efficient polymeric aluminum chloride for wastewater treatment. The preparation technology is mainly technologically characterized by comprising the following steps: with hydrochloric acid, aluminum hydroxide and a polymerization regulator as main raw materials, producing a liquid solution by a high-temperature, low-pressure and alkaline adjustment two step method; and producing powdery solid by a centrifuging or pressure spray drying and curing environment-friendly technology. The preparation technology disclosed by the invention is advanced in process, high in production efficiency, fast in purification speed, good in treatment effect, wide in application field, low in treatment cost, energy-saving and environment-friendly, and has important application and popularization values by adjusting the raw material ratio in production.

The invention discloses a wetting agent capable of inhibiting dust flying. The wetting agent comprises 0.05-0.25% of sodium carboxymethyl cellulose, 0.3-1.2% of polyacrylamide, 0.2-0.4% of polyoxyethylene fatty alcohol sodium sulfate, 0.1-0.5% of sodium alpha-alkenylsulfonate, 0.3-1% of corn starch grafted sodium acrylate, 0.08-0.13% of silicone resin polyether emulsion, 0.1-0.5% of dodecyldimethylbetaine, 0.1-0.3% of carboxymethyl chitosan, 0.05-0.1% of dioctyl sodium sulphosuccinate, 0.4-0.6% of ethanediol, 0.2-0.4% of calcium chloride and the balance of water. The sprayed fog drops can quickly capture and wrap the dust particles, thereby increasing the particle settling speed. The sprayed fog drops can be covered on the dust on the coal rock surface and ground surface to prevent secondary flying dust, thereby enhancing the dust removal efficiency.

A method of removing solids from the slurry at a construction site located on or near a stream in order to improve the quality of water discharged into the stream by forming treatment zones for receiving slurry, said zones comprising walls of filter bags and floors of filter skirts, said bags and skirts comprising geotextile material and the bags being filled with a shredded rubber and woodchip combination.

The invention relates to a garbage leachate nanofiltration concentrated solution secondary reduction membrane filtration concentrated solution treatment method, which comprises the following steps of:(1) feeding raw water of secondary reduction membrane filtration concentrated solution into a raw water stirring tank, adding a softener, a flocculating agent and a coagulant aid and stirring for softening and coagulation sedimentation treatment; (2) adding primary clear liquid in a clear liquid collecting tank into a primary Fenton reactor for primary Fenton oxidation treatment; (3) adding secondary clear liquid into a secondary stirring tank of a secondary Fenton reactor for secondary Fenton oxidation treatment, (4) carrying out membrane biological reaction treatment on tertiary clear liquid after the secondary Fenton oxidation treatment, (5), adding quartic clear liquid after membrane biological reaction treatment into a biological active carbon device for treatment until the clear liquid after biological active carbon treatment reaches the standard. The method can safely and effectively remove hard-degradable organic matters and hardness in the secondary reduction membrane filtration concentrated solution, can reduce the influence on a biochemical system, and achieves safe and stable effluent.

The invention relates to a method for preparing cobamamide. The method comprises the following steps of: a, taking vitamin B 12 fermentation solution, and hydrolyzing and filtering under the light-resistant condition; b, adsorbing filter liquor by using a macroporous resin column, and washing and desorbing to obtain primary desorption solution; c, evaporating and concentrating the primary desorption solution to obtain concentrated solution; d, adding a flocculating agent into the concentrated solution for filtering to obtain purification solution; e, adsorbing the purification solution by using a chromatographic resin column, and developing and desorbing to obtain secondary desorption solution; f, adsorbing the secondary desorption solution by using an aluminum oxide column, and developing and desorbing to obtain crystallizing stock solution; and g, adding acetone into the crystallizing stock solution with stirring for crystallizing, and filtering and drying to obtain a finished product. The impurity content of a product obtained by the method is below 1.0 percent, the cobamamide content is over 98.0 percent, the yield of the product is over 50 percent, and the total yield of vitamin B 12 is over 80 percent. The method has the characteristics of simplicity, convenience, easy operation, high extraction yield, high purity of the product and low production cost.

The invention discloses a chitosan-grafting amino acid magnetic composite microsphere. The microsphere is provided with a core-shell structure, a chitosan-amino acid composite is used as a shell, and a magnetic material is used as a core; the composite is obtained in a grafting method of chitosan and amino acid; the amino acid is one of glutamine, glutamic acid and ornithine; the content of the amino acid in the composite is 5 to 80 percent by weight; the magnetic material is Fe or Fe3O4, and the magnetic material accounts for 10 to 20 percent of the total weight of the chitosan and amino acid. The chitosan-grafting amino acid magnetic composite microsphere can be used as a water treating agent, harmful substances (such as dyestuff substances and metal ions) in water can be effectively eliminated, various functions such as good flocculation, metal ion adsorption, deodorization, decoloration and effective reduction of COD value can be realized, the functions can be completed in a short time, and the application efficiency of the material can be improved. The chitosan-grafting amino acid magnetic composite microsphere has given universality and is applicable to waste water in dyeing enterprises, electroplating enterprises and the like.

The invention discloses a composite flocculating agent and a preparation method thereof. The composite flocculating agent is a chitosan-hydrolyzed polyacrylamide composite flocculating agent. The preparation method comprises the following steps of: 1, fully dissolving chitosan in acid aqueous solution to obtain chitosan-containing solution; 2, adding a cerium ammonirm nitrate or ammonium persulfate initiator into chitosan solution obtained in the step 1, adding acrylamide and reacting at the temperature of between 45 and 65 DEG C for 1 to 4 hours so as to obtain a chitosan grafted polyacrylamide material; and 3, adding isopropanol into solution of chitosan grafted polyacrylamide obtained in the step 2, adding aqueous solution of sodium hydroxide (NaOH) and reacting at the temperature of between 55 and 80 DEG C for 0.5 to 4 hours so as to obtain the chitosan-hydrolyzed polyacrylamide composite flocculating agent.

A clarifier is provided with an improved inlet structure which receives influent from influent column ports and discharges the influent uniformly around the entire circumference of the inlet structure. The influent column ports may be baffled. Angled guide vanes on the inlet structure reduce the flow energy and effect a tangential flow into a feedwell in the basin. The feedwell may be conical to further reduce the velocities and create an outward flow to counteract inward flows in the basin.

The invention discloses preparation of a composite type inorganic polymeric flocculating agent and an application thereof, and belongs to the field of wastewater treatment. The flocculating agent takes ferrous sulfate septihydrate and sodium silicate as main raw materials; and fewer metal ions including Zn<2+>, Mg<2+>, Ca<2+> and the like are added, and steps of activating, mixing, oxidizing, curing and the like are carried out to prepare the composite type inorganic polymeric flocculating agent. A preparation process of the flocculating agent has the advantages of simple preparation process, low cost and excellent flocculating, de-coloring and dephosphorization effects on sewage; a product is liquid and the product stability is good; and the product can be directly added so that the use is convenient.

The invention discloses a high-efficiency flocculation-adsorption treatment method for waste water containing low-concentration organic arsine preparations, and belongs to the technical field of sewage treatment. The method disclosed by the invention comprises the following steps: step 1, preparing a suspended flocculation-adsorption agent of humic acid-iron (III) composite substance; step 2, adjusting the pH of the low-concentration organic arsine waste water of pretreated solid suspended substance (SS), controlling the range of the pH during 5-9, and according to the content of organic arsine in the waste water, putting and adding the suspended flocculation-adsorption agent of the humic acid-iron (III) composite substance, which is obtained in the step 1; step 3, quickly stirring a flocculation-adsorption reaction system in the step 2 for 10 minutes at the rotating speed of 300 rpm, slowly stirring and adsorbing the flocculation-adsorption reaction system at a slow speed for 60-120 minutes at the rotating speed of 100 rpm, standing and precipitating the flocculation-adsorption reaction system which is stirred and adsorbed for 30-60 minutes, and then performing solid-liquid separation. Through adoption of the method disclosed by the invention, waste water containing the low-concentration organic arsine preparations (the content of the organic arsine preparations is not larger than 100mg / L) can be treated in the manners of high efficiency and low consumption, and the method is convenient to operate and easy to control.

The invention discloses a preparation method for chitosan modified algae removal flocculant. The preparation method comprises the following steps: preparing N-malely chitosan, mixing with acrylamide monomer and dimethyl diallyl ammonium chloride, dissolving in water, adding a photoinitiator into a mixed solution under protection of nitrogen gas, triggering polymerization reaction through ultraviolet irradiation, and standing and curing to obtain the algae removal flocculant. The chitosan modified algae removal flocculant prepared by the preparation method improves flocculation performance of chitosan, further improves dissolving performance of chitosan, is higher in viscosity coefficient, and can be widely used for algae removal treatment of algae-containing landscape water, river water and lake water. The method is simple to operate, is short in synthesis time; and the used main raw materials are natural high-molecular products from the source, and the preparation method is an economical preparation method for obtaining high-quality algae removal flocculant.

The invention discloses a preparation method of a swine vaccine specific swine spleen transfer factor (TF). The preparation method comprises the following steps: slaughtering a swine with a positive swine vaccine antibody to harvest the swine spleen; preserving the swine spleen at low temperature; unfreezing the swine spleen; removing fasciae; mincing the swine spleen; homogenizing the pulp; filling the homogenized pulp into a bottle and storing the pulp; repeatedly freezing and thawing the pulp; centrifuging the pulp; carrying out microfiltration; carrying out ultrafiltration; carrying out inactivation; regulating the pH value; regulating the osmotic pressure; removing bacteria; and detecting the quality. The preparation method has the advantages that the pH value of water for injection is regulated to 4-6 in the pulp homogenizing step, thus being beneficial to increasing of the yields of ribose and polypeptide; a box type membrane coating is adopted for tangential flow filtration, so that the dead volumes of system residues are small and linear amplification production is easy to achieve; a 1-3KD box type membrane coating is adopted to carry out tangential flow nanofiltration on a TF crude product, thus preparing the high-concentration TF and improving the using effects; phenol red is used as an acid-base indicator, thus being convenient for clients to observe the pH value of the TF; the TF uses beta-propiolactone for inactivation instead of traditional formaldehyde and an osmotic pressure regulation process is added, thus being beneficial to combined immunization of the TF and vaccines.

The invention discloses a preparation method for yogurt lump. The method comprises the steps of fermenting, acidization, curdling, whey discharging, water washing, storing, forming, sealing, after-ripening and packaging by adopting special lactic acid bacteria to inoculate milk or goat milk which is standardized and pasteurized. The invention can not only lead the traditional yogurt lump product to be safer and more sanitary with stable quality, subtle taste and modest hardness. And since the step of the after-ripening is controlled appropriately, the prepared yogurt lump is of fuller flavor with little cream precipitated, high yielding rate and can meet popular taste and be used for producing yogurt lump with different water content, tastes and textural quality, which has more market competitiveness and can greatly enrich the processing technology and flavor of traditional yogurt lump.

The invention particularly relates to a forsterite bio-filter material for sewage treatment and a preparation method of the forsterite bio-filter material. The technical scheme is as follows: the preparation method comprises the following step: uniformly mixing 45-55wt% of forsterite raw ore fine powder, 20-30wt% of talc fine powder, 15-25wt% of magnesium oxide fine powder and 2-6wt% of dravite micropowder as raw materials with additional 2-6wt% of starch to prepare a mixed material; then, putting the mixed material and polystyrene balls in a pelletizer in a volume ratio of the polystyrene balls and the mixed material of (1.5-2.0) to 1; then, adding 10-20wt% of water to prepare particles with the grain size being 5-13mm; and then, roasting the prepared particles for 16-24 hours at 110-150 DEG C, and sintering for 2-4 hours at 1300-1500 DEG C to prepare the forsterite bio-filter material for sewage treatment. The forsterite bio-filter material for sewage treatment is simple in process and wide in source of raw materials and the prepared forsterite bio-filter material for sewage treatment has the characteristics of good flora biofilm culturing effect, high flora survival rate, good decoloring effect and high strength.