170results about How to "Large exchange capacity" patented technology

To provide a method for purification of the ionic polymer compound comprising efficiently removing low-molecular impurities, for example, ionic remaining monomers, which are charged identically to the ionic polymer compound from the ionic polymer compound in a shorter period of time. A method for purification of an ionic polymer compound, characterized by removing low-molecular impurities, such as ionic remaining monomers, by the use of an ultrafiltration membrane and/or a reverse osmosis membrane from an aqueous solution containing the ionic polymer compound and low-molecular impurities which are charged identically to the ionic polymer compound, under conditions that a concentration of the ionic polymer compound is from 7 to 20% by weight, and that an amount of charges of the ionic polymer compound in the aqueous solution is 0.30 gram-equivalent/liter or more.

The invention discloses a zeolite adsorbent and its preparation method, the zeolite adsorbent is powder particles using zeolite as main raw material; it mixes 60-95% zeolite, 30% filler, 1-30% binding agent, 0-20% hole agent and 0-20% acid to prepare colloid which solid content is 10-60%; After spray-dries it, then it roasts power particles which droplet method volume>0.5 ml/g. The exchange capacity is large, it can remove the ammonia nitrogen, calcium magnesium ion, fluorinion or heavy metallic ion in sewage water effectively and reach sewage water emission standard.

The invention discloses a biologic porcelain granule baked by mine tailings, a preparation method and a using method thereof. The biologic porcelain granule baked by mine tailings is produced by taking 3 to 5 portions of mine tailings, 3 to 5 portions of fly ash as well as 1 to 3 portions of mud or biomass foaming agent as the materials, preheating for 15 to 30min at the preheating temperature between 300 and 550 DEG C, raising the temperature to be between 1000 and 1250 DEG C at the temperature rising speed of 10 to 30 DEG C/min, and baking for 40 to 100min under the condition of the baking temperature between 1000 and 1250 DEG C; the biologic porcelain granule baked by mine tailings can be used as a microbion carrier for the biological treatment of sewage. The removing efficiency of sewage treatment can achieve 90 to 92 percent of COD, 60 to 80 percent of ammonian as well as 60 to 72 percent of phosphor. The invention is a biologic porcelain granule produced under the condition that the operating factor of the tailings is higher, reduces the pollution of iron tailings and urban mud, and purifies the urban sewage. The preparation method of the invention is simple and easy. A sewage biological treatment device using the invention is simple in structure and convenient to run.

The invention discloses a biological carbon soil conditioner and a preparation method thereof. The biological carbon soil conditioner mainly comprises the following components in parts by weight: 40-60 parts of biological carbon, 10-25 parts of pumice and 20-45 parts of bentonite, wherein the biological carbon is obtained by performing anaerobic carbonization on at least one of crops straw, wooden meal, deadwood or deciduous leaves at the temperature of 300-1000 DEG C; and the biological carbon soil conditioner is prepared by the following the steps: mixing the raw materials, adding 15-35 parts of water by weight, stirring, extruding, pelletizing and packaging components. The invention can improve soil physicochemical property, enhance soil organic matter content and fertilizer utilization rate, and reduce carbon dioxide burst size.

The invention relates to a method for treating dimethylamine waste water by using weakly acidic cation exchange resin, which comprises the following steps: filtering waste water to remove suspended matters, adsorbing the filtered waste water at ordinary temperature by using weakly acidic cation exchange resin; and after the resin which adsorbs dimethylamine tends to be saturated, eluting the dimethylamine with a phosphoric acid, hydrochloric acid or sulfuric acid solution to regenerate the resin. By using the method, the dimethylamine removal rate in the waste water is higher than 96%, and the waste water can be recycled. After desorption, the dimethylamine forms corresponding dimethylamine salts, and the dimethylamine salts can be recycled or directly discharged into a sewage tank. The method has the advantages of simple technique, reliable technology, low processing cost and no secondary pollution, is convenient to operate, and converts dimethylamine waste water into innocuous substances in deed.

A supermacroporous strong base anion exchange resin with quaternary amine group consists of the following materials in part by weight: aqueous phase: 1000 to 1500 parts of pure water, 5 to 8 parts of dispersing agent and 50 to 70 parts of dispersing auxiliary; and oil phase: 50 to 75 parts of methyl acrylate, 15 to 25 parts of divinylbenzene, 10 to 25 parts of third monomer, 70 to 100 parts of novel porogen and 0.5 to 1 part of initiator. A preparation process for the supermacroporous strong base anion exchange resin with quaternary amine group includes the following steps: (a) suspension polymerization; (b) amidation; (c) quaternization. The invention has the advantages that: the selectivity of the prepared resin on biochemical substances is enhanced; the reaction time is shortened, and the efficiency is increased; the prepared resin has even supermacropores, and compared with the conventional resin, the resin has the advantages of large exchange capacity and high mechanical strength; the product reaction conversion rate is high, the physical and chemical structures are stable, and the resin cannot be easily degraded.

A method for preparing sodium type zeolite molecular sieves by utilizing red mud comprises the steps of regulating the molar ratio of sodium silicon in the red mud to be 1.0-3.0 and regulating the molar ratio of silicon aluminum to be 2.0-5.0; heating to enable the red mud to be mixed with rubber and achieve aging; heating to enable the red mud to achieve crystallization reaction; cooling, filtration washing and drying a solid product after crystallization to obtain the zeolite molecular sieves. The method is cheap in raw material, simple in device, simple and convenient in operation and simple and feasible in preparation of the sodium type zeolite molecular sieves, and simultaneously provides a novel way for comprehensively utilizing the red mud.

The invention relates to a fluorine-removing agent with high efficiency and its preparation method and application. The invention includes the raw material agitation, the formation and the roasting which contains laterite, the aluminum salt, of which the weight dosage of the aluminum salt is 0-30% according to the gross weight of the raw material, the fluorine-removing agent can widely used in the profession of the fluorine sewage treatment, the high fluorine surface water purification. The invention is simple craft, and operation.

The invention discloses a low-grade attapulgite raw ore heavy metal curing material and a method for carrying out in-situ remediation on contaminated soil by using same. Attapulgite raw ore containingassociated minerals is taken as a carrier, waste oil is used as a carbon source, and the heavy metal curing material is prepared by adopting a one-step carbonization method. The attapulgite raw ore is subjected to calcination treatment, so that the micropore and mesoporous structures of attapulgite are activated, and the adsorption property of heavy metal ions in the soil is obviously improved. Furthermore, biochar is endowed with surface modified functional groups, thus achieving synergistic and complementary effects, and further enhancing the adsorption property of the heavy metal ions. Themethod provided by the invention utilizes the attapulgite raw ore containing the associated minerals to carry out remediation on the heavy metal contaminated soil, thus having wide application prospect in the aspect of remediation of the heavy metal contaminated soil.

A preparation method of macroporous weakly acidic cation exchange resin comprises the following steps: weighting vinylphenol, styrene, acrylonitrile, methyl acrylate, and triallyl isocyanurate monomers according to a certain weight proportion; weighting toluene as a pore forming agent according to a certain weight percentage of the monomers, weighting benzoyl peroxide and azodiisobutyronitrile as initiators according to a certain weight percentage of the monomers, and mixing the above components to form an A phase; taking saturated sodium chloride solution as a B phase; adding the A phase into the B phase, and stirring the mixture for a certain time at a certain speed, heating to a certain temperature and continuously reacting for a certain time; heating the mixture to boil and reflow, continuously reacting for a certain time, cooling and filtering; washing the reaction product by deionized water until the washing water is clear and transparent, and then washing by hot ethanol until no toluene flavor; adding a certain amount of sodium hydroxide solution in a certain concentration, stirring and performing hydrolysis for a certain time at a certain temperature; cooling and filtering, and washing by deionized water until the washing water is clear and transparent, so as to obtain the macroporous weakly acidic cation exchange resin (sodium type).

The invention relates to a method for recovering anion exchange resin polluted by organic matters and a recovery medicine, and aims to solve the problems that an elution effect is poor in the conventional recovery method and the conventional recovery medicine cannot increase the number of strong alkali groups when the anion exchange resin is severely polluted by the organic matters or macromolecular linear organic matters are tightly wound in the anion exchange resin. The method for recovering the anion exchange resin polluted by the organic matters comprises the following steps of: 1, transforming the anion resin; 2, flushing; 3, removing the organic matters from the anion resin to recover the anion resin; 4, flushing; and 5, regenerating. The recovery medicine used in the method for recovering the anion exchange resin polluted by the organic matters consists of NaCl, NaOH, an organic aid and water. The method is suitable for recovering the anion resin polluted by the organic matters and removing the organic matters from cation resin.

The invention relates to a kitchen ware dedicated electrostatic spraying powder coating and a preparation method thereof, wherein the coating comprises the following raw materials in parts by weight: 60-90 parts of epoxy resin, 15-35 parts of fluororesin, 3-8 parts of phenolic hydroxyl resin, 5-25 parts of an antibacterial adsorbent, 2-6 parts of nano silicon dioxide, 1-5 parts of nano titanium dioxide, 1-5 parts of nano calcium carbonate, 5-15 parts of bauxite, 5-10 parts of precipitated barium sulfate, 10-20 parts of titanium dioxide, 2-5 parts of zinc stearate, 1-3 parts of benzoin, 2-6 parts of hydroxyethylmethylcellulose, 0.2-1 part of polyamide wax, 0.5-2 parts of a leveling agent, and 2-6 parts of an amine curing agent. According to the kitchen ware dedicated electrostatic spraying powder coating and the preparation method thereof disclosed by the invention, the construction requirements of electrostatic spraying can be met, moreover, the bacteriostatic and bactericidal effects can be played, and the coating also has the ability to adsorb odorous substances in kitchens.

The invention provides a method for preparing immobilized fructosyltransferase through ion exchange fibers. The weakly basic anion exchange fibers are used as a carrier to immobilize a liquid free fructosyltransferase to the carrier, the activity of the immobilized fructosyltransferase can be maintained for a long time, and the immobilized fructosyltransferase can be repeatedly used for a long time. The method comprises two pieces of technological content, namely the liquid free fructosyltransferase is prepared through biolysis and the immobilized fructosyltransferase is prepared through the ion exchange fibers. Fermentation cultivation is conducted on aspergillus oryzae to obtain a large amount of thallus, the thallus is washed, celluloses are used for dissolving the thallus, free enzyme fluid is extracted, and then the fructosyltransferase is immobilized through the ion exchange fibers. The activity of the obtained immobilized fructosyltransferase is larger than or equal to 180 U/g, the half-life period of the immobilized fructosyltransferase is larger than or equal to 40 times, the saccharose inversion rate is larger than or equal to 90%, and the content of fructo-oligose generated through the saccharose inversion is 55-60%. Compared with the public prior art, the method has the advantages that enzyme extraction is simple, operation time is short, enzymes can be easily recycled, the immobilization process is conducted without cross-linking agents, and the product quality and safety are high.

The invention discloses a method for extracting lysozyme from egg white, comprising the following steps: (1) taking the egg white which is added with water to be diluted after being homogenized and flows through an adsorption column filled with Na resin formed by converting from macropore weak acid cation exchange resin; (2) back flushing the Na resin in the adsorption column with water to remove the residual egg white; (3) flushing the Na resin in the adsorption column with NaCl solution to remove foreign protein; (4) carrying out gradient elusion on the Na resin by the NaCl solution and combining all the eluate; (5) separating, condensing and spray drying the eluate via a biomembrane to prepare the finished lysozyme product. The method of the invention adopts the ion exchange resin to adsorb the egg white, enlarges the exchange capacity of the resin, increases the extraction efficiency and ensures relatively high activity and purity of the extracted lysozyme.

The invention discloses an ammonia nitrogen removing agent and belongs to the field of environmental protection. Zeolite is modified and activated by hydrochloric acid, magnesium chloride and sodium chloride are dispersed on the zeolite by an ultrasonic treatment and roasting method, the specific surface area of the zeolite is increased, an alkaline active site is obtained, the microporous structure of the zeolite is remained, the original calcium ions with larger radiuses in the zeolite are replaced by the magnesium ions and the sodium ions, the effective pore diameter of the zeolite is enlarged, the internal dispersing speed is increased and the exchange capacity is increased, so that the adsorption ability on ammonia nitrogen in waste water is improved and the ammonia nitrogen removingagent is suitable for ammonia nitrogen containing waste water with high concentration and low concentration. The problem that trihalomethane is generated caused by the fact that excessive chlorine isadded in the existing domestic water preparation process is solved.

The invention discloses a fluorine removal agent prepared from fly ash, a fluorine removal method and application of the fluorine removal agent. A certain proportion of iron powder and activated carbon is mixed in solid waste or materials, such as fly ash products and clay containing different active aluminum oxide fluorine removal adsorption materials, iron oxide or hydroxide with the relatively high surface activity is introduced, so that the anion exchange capacity and the fluorine removal adsorption capacity are greatly improved, and the limitation of relatively high cost spent on industrial independent using treatment of the iron oxide is reduced. Compared with a fluorine removal material, the fluorine removal agent has the advantages that the preparation complexity is not improved; the removal efficiency and the preparation cost are both taken into consideration; the fluorine removal process is implemented in multiple ways such as adsorption, complexing, chelating and ion exchange; the fluorine removal agent is simple in process and easy to operate; relevant indexes can meet relevant national water quality standards for drinking water; the fluorine removal agent is particularly applicable to the conventional remediation technology process.