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

The invention discloses a PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof, wherein AlCl#-[3] * 6H#-[2]O, PDMDAAC are used as raw materials, and is introduced into the PAC solution. The flocculating agent has strong adsorption and bridging capacity for colloidal matter.

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 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 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 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 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.