47results about How to "Strong adsorption and bridging ability" patented technology

The invention relates to a preparation method of a polymerized titanium tetrachloride inorganic polymeric flocculant. The preparation method comprises the following steps: by using a titanium tetrachloride solution and sodium hydroxide as raw materials, adding sodium hydroxide into the titanium tetrachloride solution, wherein the alkalization degree is equal to 1.5-2, and the dropwise adding process of a sodium oxide solution is finished within 10-60 minutes; and then, further stirring for 1.5-5 hours until the solution becomes a colorless transparent liquid. The flocculant has the advantages of good product stability, strong colloidal substance adsorbing and bridging capabilities, good flocculation effect, wide application range, low sludge productivity and the like, can be widely applied to the fields of water supply, wastewater treatment, papermaking, textile dyeing and printing, daily chemical industry and the like and has a favorable water treatment effect. The method provided by the invention has the characteristics of simple and rapid process, economy, rapidness and the like.

The invention relates to a polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and a preparation method and an application thereof. The alkalinity (B) of the composite flocculant is 0.5-1.5, and the composite flocculant is prepared by mixing a polymeric silicic acid solution with concentration of 0.08-0.12 mol / L with a polyferric sulfate titanium solution with concentration of 8-15 g / L according to a Si / Ti mol ratio of (0.02-0.1):1. The composite flocculant has the advantages of strong adsorption bridging ability on colloid matters, good flocculation effect, wide application range, less sludge generation amount and the like, thereby being capable of being extensively applied in such fields as water supply, waste water treatment, papermaking, textile dyeing and finishing and daily-use chemical industry, and the water treatment effect is good.

The invention relates to a PAC (polyaluminium chloride)-modified sodium alginate inorganic-organic composite flocculant and a preparation method thereof. The flocculant is prepared by carrying out hybrid reaction on polyaluminium chloride and modified sodium alginate in a mass ratio of (2-10):1, and the modified sodium alginate flocculant is prepared by taking sodium alginate SA, acrylamide, and dimethyl diallyl ammonium chloride as main raw materials and taking ammonium persulfate as an initiator through performing a grafting copolymerization reaction. The whole reaction is completed in the same reactor, so that the production process is simple; and the whole reaction is mild in conditions and easy to control. The process of compounding with PAC is simple, and a prepared composite coagulant has the characteristics of stable properties, less application amount, good flocculation effect, high treatment efficiency, low sludge production and the like, therefore, the coagulant can be widely applicable to water supply and wastewater treatment.

The invention discloses efficient low-foam normal-temperature phosphorous-free oil removing liquid. The oil removing liquid consists of the following components in percentage by weight: 3.0-7.0 wt% of alkylphenol polyoxyethylene ether, 1.0-5.0 wt% of fatty alcohol polyoxyethylene ether, 1.0-5.0 wt% of fatty acid methyl ester polyoxyethylene ether sulfonate, 0.5-4.0 wt% of linear alkylbenzene sulfonate, 10.0-30.0 wt% of carbonate, 4.0-15.0 wt% of sodium metasilicate pentahydrate, 5.0-15.0 wt% of sodium hydroxide, 4.0-12.0 wt% of sodium citrate, 0.5-1.0 wt% of redeposition resisting agent, 2.0-5.0 wt% of complexing agent, 0.1-0.3 wt% of defoaming agent, 1.0-3.0 wt% of corrosion inhibitor, 0.01-0.1 wt% of flocculating settling agent, and the balance of water. The oil removing liquid has the characteristics of cost saving, improvement of oil removing efficiency and economic benefit.

The invention discloses an organic-inorganic hybrid ionic bond efficient flocculant which is characterized in that an initiator, namely ammonium persulfate is added in a DMDAAC (dimethyl diallyl ammonium chloride) polymerization process to allow a molecular chain end of a composited polymer, namely PDMDAAC (poly dimethyl diallyl ammonium chloride) to be provided with sulfate radicals, the sulfate radicals are bonded with hydroxy aluminium ions with positive charge in an ionic bond form, and the PAC (poly aluminium chloride)-PDMDAAC organic-hybrid ionic bond efficient flocculant is obtained, and fully exerts excellent charge neutralizing capacity of PAC and an adsorption bridging action of PDMDAAC. In a water treatment process, the PAC-PDMDAAC hybrid flocculant is less in dosing quantity, and a formed flocculating body is quick in sedimentation, large and compact, so that the water treatment efficiency is improved significantly.

The invention relates to an experimental method for the preparation of a poly-iron-based flocculating agent for coking wastewater advanced treatment. The experimental method comprises the specific operating steps that 1, the optimal preparation conditions of polymeric ferric sulfate are determined through an orthogonal experiment method; 2, on the basis of the optimal conditions of the polymeric ferric sulfate, an aluminum ingredient is added, and the optimal molar ratio of Fe to Al is determined through a coagulation experiment; 3, on the basis of polymeric ferric aluminum sulfate, activated silicic acid and positive polyacrylamide ingredients are added, and the optimal iron-aluminum proportion is determined through a coagulation experiment; 4, polysilicate ferro-alumium sulfate is applied to the coking wastewater advanced treatment, and the optimal technological conditions of the flocculating agent are determined. According to the experimental method for the preparation of the poly-iron-based flocculating agent for coking wastewater advanced treatment, under the conditions that the pH value of the flocculating agent is 7 and the dosing quantity is 0.83 mL / L, the CODcr removing rate of a coking wastewater sample can reach 50%, the turbidity removing rate reaches 95.96%, the chroma removing rate reaches 50%, through the research and development of the optimal flocculating agent matching, the efficiency of coking wastewater coagulation treatment is improved, and the load of follow-up treatment units is reduced.

The invention relates to an inorganic coagulant-enteromorpha compound water treatment agent and a preparation method thereof. According to the preparation method of the inorganic coagulant-enteromorpha compound water treatment agent, catastrophic algae-enteromorpha is taken as a raw material, an enteromorpha extract is prepared by adopting an extraction technology; and in a process of water treatment, an inorganic coagulant and the enteromorpha extract are used through successively medicating at an interval of 30-50 seconds. The inorganic coagulant-enteromorpha compound water treatment agent integrates the advantages that the molecular weight of the enteromorpha is high and the enteromorpha has strong adsorption bridging capability on colloidal substances, and the inorganic coagulant has a wide optimal medicating range, a good flocculation effect and a wide range of application, so that the inorganic coagulant-enteromorpha compound water treatment agent has the advantages of simple and fast and economical production technology, and wide range of application. Meanwhile, a new thought is provided for the technology for reusing the catastrophic algae-enteromorpha.

The invention relates to a polymeric titanium sulfate (PTS) inorganic polymeric flocculant, and a preparation method and an application of the flocculant. The PTS inorganic polymeric flocculant is prepared by taking a titanium sulfate solution and sodium hydroxide as raw materials and dropping sodium hydroxide into the titanium sulfate solution; a preset alkalization degree is 0.1-5.0; after the dropping is finished, the titanium sulfate solution and sodium hydroxide are stirred for 1.5-5h. The flocculant has the advantages of good product stability, strong adsorption bridging ability for colloidal substances, good flocculation effect, wide application range, small generated sludge quantity and the like, can be widely applied to the fields of water supply, waste water treatment, papermaking, textile printing and dyeing, daily-use chemical industry and the like, and has a good water treatment effect. The method has the characteristic that a production technique is simple, economical and rapid.

The invention discloses a preparation method for polymerized aluminum titanium sulfate and an application. The method comprises the following steps: mixing an aluminum sulfate solution in concentration of 0.01-0.05mol / L with a titanous sulfate solution in concentration of 0.001-0.01mol / L in a Ti / Al mole ratio of (0.1-0.6):1 and stirring in thermostatic water bath, thereby acquiring a mixed solution of titanous sulfate and aluminum sulfate; mixing the mixed solution of titanous sulfate and aluminum sulfate in a mole ratio of n(OH) / n(Al+Ti) and stirring in thermostatic water bath, thereby acquiring an inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate, wherein the mole ratio of n(OH) / n(Al+Ti) of the inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate (PTAS) is 0.1-1.0; adding 1mol / L sodium hydroxide or sodium carbonate, stirring in thermostatic water bath and then curing, thereby acquiring the polymerized aluminum titanium sulfate. The inorganic compound macromolecule coagulant prepared according to the invention has an excellent coagulating effect, simple technology, low cost, less dosage and wide application.

A composite flocculant for treating the printing and dyeing sewage in textile industry is prepared from AlCl3 .6H2O and polyepoxy chlorpropane amine through introducing the polyepoxy chloropropane amine to PAC solution. Its preparing process is also disclosed.

The invention relates to a preparation method and an application of PCAMT (polymeric aluminium magnesium titanium chloride). The preparation method comprises the following steps: an aluminium chloridesolution and a magnesium chloride solution are prepared and mixed in the mole ratio of Mg / Al being 0.1-0.6:1, an aluminium magnesium chloride solution is obtained, placed in a refrigerator for 20-30min and taken out, 0.11-0.66 mL of a titanium tetrachloride liquid is pipetted to the aluminium magnesium chloride solution in the mole ratio of Ti / Al being 0.1-0.6:1, the mixed solution is sufficiently stirred and uniformly mixed, an aluminium magnesium titanium chloride solution is obtained, a sodium hydroxide solution with concentration being 2 mol / L is added dropwise to the aluminium magnesiumtitanium chloride solution, the mixed solution is stirred and mixed uniformly during addition, thermostatic water bath and continuous stirring are performed after addition, curing is performed in a light avoiding manner at room temperature, and PCAMT is obtained. The process is simple, the cost is low, an obtained composite polymeric coagulant has better charge neutralizing and adsorption bridging effects on pollutants, and the coagulation effect is better.

The invention relates to a polyaluminum ferric chloride-polyepichlorohydrin-ethylene diamine preparation method comprising the steps that: (1) a polyepichlorohydrin-ethylene diamine solution is prepared; (2) a polyaluminum ferric chloride solution is prepared; and (3) the prepared polyepichlorohydrin-ethylene diamine solution and the polyaluminum ferric chloride solution with a weight ratio of 1:20-1:50 are subjected to ultrasonic oscillation in an ultrasonic wave generator, such that polyaluminum ferric chloride-polyepichlorohydrin-ethylene diamine flocculant is prepared. According to the invention, epichlorohydrin, ethylene diamine, aluminum chloride and iron chloride are adopted as raw materials, and the polyaluminum ferric chloride-polyepichlorohydrin-ethylene diamine is prepared. The flocculant is a novel inorganic-organic high-molecular flocculant. As a high-efficiency water-processing agent, the flocculant can be widely applied in dye wastewater processing, and has advantages such as high molecular weight, good stability, good decolorizing effect, and the like.

The invention discloses hydrophobic cation polymeric flocculant and a preparation method and application thereof. The preparation method comprises the following steps: adding acrylamide, methyl oxiranyl trimethyl ammonium chloride and octadecyl vinyl ether into a reaction vessel with the mol ratio of (89.5-5.5) to (10-40) to (0.5-3.5); adding a urea cation surface active; adding deionized water and stirring to dissolve the mixture in the reaction vessel;, raising the temperature of the mixed solution to 30-35 DEG C; adding octadecyl vinyl ether into the reaction vessel again and stirring evenly, adding an evocating agent into the reaction vessel; keeping the temperature at 30-35 DEG C to carry out polyreaction; obtaining a translucent or milky colloidal product after the reaction is carried out for 3-6 hours; pouring the translucent or milky colloidal product into acetone to be precipitated; taking out the sediment; and extracting the sentiment for 24 hours by ethanol to obtain the hydrophobic cation polymeric flocculant. The invention has the advantages of simple preparation process and remarkable flocculating and dewatering effect for substrate sludge.

The invention discloses a making method of two-agent typed polysilicate coagulant, which comprises the following steps: diluting one or more metal salt and or polymeric metal salt solution by water to produce 5-15 percent weight density at metal elemental unit; adjusting the pH value through inorganic acid as agent A; diluting the solution with silicon material by water to produce 2-10 percent weight density at SiO2 unit as agent B; packing agent A and B separately; mixing agent A and B evenly to produce the molar rate at 1:0.5-5.0 for silica dioxide and metal; obtaining the final polysilicate coagulant. The invention can produce excellent property of polysilicate coagulant with impurity-removing and high decolouring efficiency, which forms rapid and dense floccules.

Disclosed are an inorganic polymer composite flocculating agent containing polymerized silicic acid and ferric titanium sulfate, and a preparation method and application thereof. The inorganic polymercomposite flocculating agent containing the polymerized silicic acid and the ferric titanium sulfate is mainly made from ilmenite, and is obtained by mixing a polymerized silicic acid solution with the concentration of 18-37wt% with an ilmenite acid leaching solution, namely a ferric titanium sulfate solution, according to the molar ratio of Si to Ti being (0.02-0.1):1. The composite flocculatingagent has the advantages of strong adsorption and bridging ability for colloidal substances, good flocculation effect, wide application range and small amount of sludge generated, can be widely applied to the fields such as water supply, wastewater treatment, paper making, textile printing and dyeing and daily chemical, and has a good water treatment effect.

The invention relates to a method for preparing a polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through a copolymerization method. The polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant is prepared and obtained under the condition that chloride ions exist. The polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant is prepared in the mode that titanium tetrachloride and sodium silicate serve as raw materials, and a titanium tetrachloride solution and polymeric silicic acid are o-polymerized. The method has the advantages that titanium tetrachloride serves as one of the raw materials, the chloride ions are introduced in the preparation process, excessive sulfate ions are avoided, product hydrolysis is avoided, product stability is improved under the high titanium ion concentration, the turbidity and the organic matter removal rate are high under the same dosing quantity, medicine stability is obviously enhanced, the adsorption bridging capacity for colloidal matter is high, the flocculation effect is good, the application range is wide, an outflow water pH value is close to the neutral value, and follow-up treatment is convenient.

The invention relates to a cationic taro starch and a preparation method thereof, belonging to the field of environment-friendly material preparations. The preparation method for a flocculating agent,i.e., the cationic taro starch, comprises the following steps: cutting taro slices and soaking the taro slices in a NaOH solution with a pH value of 8-10, wherein a material-water ratio is 1: 1 to 1:5; performing homogenization, sieving, centrifugation, washing and drying successively so as to obtain taro starch; then spraying a solution containing NaOH and 2,3-epoxypropyltrimethylammonium chloride into the taro starch, wherein the usage amount of the NaOH accounts for 0.5-3 wt% of the usage amount of the taro starch, and the usage amount of the 2,3-epoxypropyltrimethylammonium chloride accounts for 12-20 wt% of the usage amount of the taro starch; and performing uniform mixing under stirring, allowing the water content of a formed system to be in a range of 20%-30%, and carrying out a reaction at 50-70 DEG C for 1-4 h. The preparation method of the invention is simple in process and low in cost; and the obtained cationic taro starch is environmentally friendly, non-toxic and easilydegradable, and has excellent decolorization effect, wherein decolorization effect on dyes can reach 95% or more.

The invention discloses a polyaluminum silicate iron-acrylamide copolymer composite flocculant and a preparation method thereof, which is characterized in that 20 parts of Na2SiO3 are added to 250 parts of deionized water, the pH value is 2 to 5, and the reaction is carried out at room temperature for 2 to 3 hours. Prepare activated silicic acid; use aluminum-containing waste, iron-containing waste hydrochloric acid and industrial hydrochloric acid to obtain mixed crystals of AlCl3 and FeCl2; add 1.2 to 25.0 parts of mixed crystals to 25 parts of activated silicic acid, react, stand and mature, and obtain poly Aluminum iron silicate PAFSI; add 20 parts of acrylamide, 75-450 parts of deionized water, 5-20 parts of ionic monomer, and 0.3-6 parts of macromonomer into the reaction bottle, stir, pH value 5-9, pass N2 , add 0.008-0.4 parts of potassium persulfate at 40-70°C, react for 12-36 hours, and prepare the copolymer PAME; add 100 parts of 5 g / L PAME solution into the reaction bottle, and add 12-350 parts under rapid stirring 100 g / L PAFSI solution, pH value 1-4, react at 30-40°C for 2-3 hours, then react at 50-75°C for 2-4 hours, and mature for 24 hours to prepare PAFSI-PAME composite flocculant.

The invention discloses a composite coagulant for industrial wastewater treatment. The composite coagulant comprises the following components in parts by mass: 100 parts of a modified cationic coagulant, 1-5 parts of a strong oxidant, 5-10 parts of bentonite, 30-50 parts of modified fly ash and 4-10 parts of a compound inorganic salt. The sewage treatment agent has a good coagulation treatment effect on different wastewater qualities, especially has obvious effects on decoloration and COD removal, and is small in dosage, short in operation time, fast in separation and precipitation and small in sludge amount.

The invention relates to a PAC (polyaluminium chloride)-modified sodium alginate inorganic-organic composite flocculant and a preparation method thereof. The flocculant is prepared by carrying out hybrid reaction on polyaluminium chloride and modified sodium alginate in a mass ratio of (2-10):1, and the modified sodium alginate flocculant is prepared by taking sodium alginate SA, acrylamide, and dimethyl diallyl ammonium chloride as main raw materials and taking ammonium persulfate as an initiator through performing a grafting copolymerization reaction. The whole reaction is completed in the same reactor, so that the production process is simple; and the whole reaction is mild in conditions and easy to control. The process of compounding with PAC is simple, and a prepared composite coagulant has the characteristics of stable properties, less application amount, good flocculation effect, high treatment efficiency, low sludge production and the like, therefore, the coagulant can be widely applicable to water supply and wastewater treatment.

The invention discloses a preparation method for polymerized aluminum titanium sulfate and an application. The method comprises the following steps: mixing an aluminum sulfate solution in concentration of 0.01-0.05mol / L with a titanous sulfate solution in concentration of 0.001-0.01mol / L in a Ti / Al mole ratio of (0.1-0.6):1 and stirring in thermostatic water bath, thereby acquiring a mixed solution of titanous sulfate and aluminum sulfate; mixing the mixed solution of titanous sulfate and aluminum sulfate in a mole ratio of n(OH) / n(Al+Ti) and stirring in thermostatic water bath, thereby acquiring an inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate, wherein the mole ratio of n(OH) / n(Al+Ti) of the inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate (PTAS) is 0.1-1.0; adding 1mol / L sodium hydroxide or sodium carbonate, stirring in thermostatic water bath and then curing, thereby acquiring the polymerized aluminum titanium sulfate. The inorganic compound macromolecule coagulant prepared according to the invention has an excellent coagulating effect, simple technology, low cost, less dosage and wide application.

The invention provides a method for preparing a flocculant based on crown ether for papermaking wastewater treatment, comprising the following steps: S1 preparation of polymerized betaine, S2 preparation of crown ether-based acrylamide copolymer, S3 surface modification of graphene oxide Preparation, S4 preparation of crown ether-based flocculant for papermaking wastewater treatment. The invention also discloses a crown ether-based flocculant for treating papermaking wastewater prepared according to the preparation method. The preparation method disclosed by the invention is simple and easy, the raw materials are easy to obtain, the dependence on equipment is not high, and it is suitable for large-scale production. The prepared flocculant for papermaking wastewater treatment based on crown ether has high intrinsic viscosity and strong adsorption and bridging ability , Small dosage, good flocculation effect, wide application range, less sludge generated, fast flocculation speed, stable performance, safe and environmentally friendly use.