56results about How to "High floc strength" patented technology

The invention relates to the technical field of wastewater treatment, and particularly relates to a dyeing wastewater treatment agent and a preparation method thereof. The dyeing wastewater treatment agent comprises the following raw materials in parts by weight: 2-10 parts of ferrous sulfate, 20-30 parts of magnesium sulfate, 0.5-2 parts of polyacrylamide, 10-20 parts of iron nitrate, 1-5 parts of nickel nitrate, 40-60 parts of polyaluminum chloride, 10-20 parts of modified kieselguhr, 8-22 parts of meerschaum powder, 10-20 parts of crosslinked rectorite, 5-10 parts of chitosan-graphene composite material and 1-3 parts of graphene nano layer/MnO2 compound. The dyeing wastewater treatment agent provided by the invention has the advantages of convenient production method, low investment, quick effect taking and no secondary pollution.

The invention relates to a granular compound flocculant for water treatment compositely comprising a bilayer or multilayer flocculant. The components according to the weight percentage are as follows: aluminum salt 40%-60%, ferric salt 15%-30%, polyacrylamide 0.5%-10% and starch 1%-15%. The flocculant of the invention integrates the characteristic of both inorganic and organic flocculants, improves the dosing mode of the medicament, increases the action efficiency of the medicament by using the multilayer sustained release structure and improves the efficiency of the medicament.

A preparation method of hydrophobic modified cationic polyacrylamide flocculant comprises the following steps: weighing and mixing acrylamide, acryloyloxyethyl trimethyl ammonium chloride, butyl acrylate, perfluorinated octyl ethyl acrylate and a surfactant, obtaining polymer monomer aqueous solution by adding deionized water and mixing well by stirring, and then adding a plurality of additives; adding a compound initiator for polymerization and then adding a photoinitiator for polymerization; after the polymerization reaction, taking out colloidal particles for prilling, drying, crushing, and sifting, so that the hydrophobic modified cationic polyacrylamide flocculant is obtained. The flocculant provided by the present invention is able to improve the adsorption capacity of polymers to suspended particles, especially organic matters in water, by introducing lyophobic group into the macromolecule of the flocculant. Meanwhile, the flocculant possesses the properties of hydrophobic associating polymer, which is beneficial to the interaction between macromolecules, reducing the hydrophilic performance of the floc body, increasing the settling velocity of the floc body, and improving intensity of the flocs and water separation capability of the filter cake.

The present invention relates to environment protection technology. The sewage treating agent contains Al iron, Fe ion, Mg iron, Mn ion and lithopone, and is compounded by mixing water, aluminium sulfate, ferric sulfate, magnesium sulfate, manganese sulfate and lithopone through stirring for complete dissolving. It has the advantages of wide use range, high deposit rate, good quality of treated water, low cost, no corrosion to steel structure, no toxicity, no pollution and relatively high safety, and it may be widely used for effluent treatment in oil field, coal mine, textile mill, printing and dyeing mill, etc. and city sewage treatment.

The invention discloses a novel high-efficiency environment-friendly coagulating agent used for treating turbid water or polluted water. The coagulating agent comprises the components of, by weight: 10-30% of bauxite, 20-40% of fly ash, 20-60% of lime, 3-8% of zeolite, 1-5% of citric acid, and 1-5% of cement. The invention also relates to the application of the high-efficiency environment-friendly coagulating agent in treating turbid water or polluted water. The coagulating agent provided by the invention is economical and environment-friendly, and has the advantages of rich component source and low cost. An agent dose is low, wherein the dose is 3-5% of the dry weight of sludge in the turbid water or polluted water. The influence on water body pH value is low, such that the original property of the sludge in the water is not changed. Part of active heavy metal is solidified, such that activity of sludge in water can be increased, and water body self-cleaning capacity can be greatly improved. Multiple functions such as absorption, condensation, chelation, curing, ion exchange, and the like are integrated. A treatment effect is good. Water body after flocculation and sedimentation is clear and transparent, and has no odor.

The invention discloses a treating agent for heavy metal waste water and a preparation method and application thereof. The treating agent is prepared from the following raw materials in parts by weight: 30-40 parts of lignin, 19-27 parts of chitosan, 11-19 parts of polystyrolsulfon acid, 13-21 parts of polyethylene glycol, 5-12 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and 1-5 parts of ethylene-bis-stearamide. According to the preparation method, the lignin is treated with the polystyrolsulfon acid, the chitosan is treated with the polyethylene glycol, then the treating agent is prepared by ultrasonic treatment and high-temperature calcination from the 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and ethylene-bis-stearamide, therefore a synergetic effect is played, multiple kinds of metal ions in a water body can be captured, simultaneously the treating agent has notable corrosion inhibition and antiprecipitation effects, and the production cost is reduced; the treating agent has stable performance, good quality of effluent water, low level of addition for treatment and low treatment cost; and the treated waste water can achieve an effluent standard. The treating agent disclosed by the invention has the advantages of no toxicity, no secondary pollution of water after treatment, convenience in recovery, simple manufacturing process, easy operation and suitability for industrialized production.

The invention discloses an organic/inorganic hybridized cation reverse demulsifier, a preparation method and an application thereof. The preparation method for the organic/inorganic hybridized cationreverse demulsifier comprises the following steps: 1) adopting a silane coupling agent for modifying the surface hydroxyl group on nanometer SiO2, thereby acquiring modified nanometer SiO2, and then connecting a terminal on the modified nanometer SiO2 surface with a carbon-carbon double bond; 2) trigging ternary polymerization reaction of the modified nanometer SiO2, acrylamide and dimethyl diallyl ammonium chloride, thereby acquiring an end product. According to the invention, the silane coupling agent containing an unsaturated double bond is adopted for modifying nanometer SiO2, so that themodified nanometer SiO2 has a certain hydrophobicity and has an unsaturated carbon-carbon double bond on the terminal; a lyophobic hard-shell hydrophilic soft-shell netted structure can be formed through the ternary polymerization of the modified SiO2, AM and DMDAAC; the structure is capable of effectively increasing electric charge density and is capable of realizing effective demulsification onthe basis of guaranteeing low cation degree; a demulsifier to be matched with the reverse demulsifier is in a nonionic form, so that the formed floc strength is low and the de-oiling rate is high.

The invention belongs to the sewage treatment field, and especially relates to a water treatment composite flocculating agent and an application thereof. The flocculating agent is obtained by compounding a plurality of flocculating agents, and comprises 70-89wt% of polyaluminum chloride, 10-30wt% of an aluminum salt and 0.1-2wt% of an iron salt. The composite flocculating agent has the large strength characteristic of an inorganic flocculating agent, also has the bridge formation, network bashing, strong sweeping capability and large floc of an organic flocculating agent, and overcomes the disadvantages of low floc strength and large consumption of organic flocculating agents.

The invention provides a chemical adsorbent for processing heavy metal waste water. The Chemical adsorbent for processing heavy metal waste water comprises the following components in parts by mass: 5to 25 parts of calcium oxide, 15 to 40 parts of an inorganic polymer flocculant, 1 to 25 parts of sulfur-containing iron powder, 3 to 30 parts of sodium percarbonate, and 1 to 10 parts of an organicpolymer flocculant. The adsorbent of the invention is simple to use and operate, the conditions are easy to control, the dosage of the medicament is small, and the sedimentation speed is fast.

The invention discloses a sewage treatment agent for an oil production plant, belonging to the technical field of preparation of the sewage treatment agent. The sewage treatment agent for the oil production plant is prepared from the following raw materials in parts by weight: 40 to 80 parts of demulsifier, 30 to 60 parts of flocculant, 30 to 60 parts of foaming agent, 20 to 50 parts of flotation agent, 15 to 35 parts of fungicide, 10 to 20 parts of slow rot scale inhibitor, and 10 to 20 parts of deoxidant. The treatment agent provided by the invention for the oil production plant has the advantages of high deposition rate, good effluent quality, low treatment cost, no corrosive effect, nontoxicity, no pollution, safety in use, and the like; after oil production plant sewage is treated by adopting the treatment agent provided by the invention, the pH value basically reaches neutral pH, the SS removing rate can reach 99.09% to 99.27%, the COD removing rate can reach 99.02% to 99.11%, and the oil removing rate can reach 99.04% to 99.12%.

The invention discloses an organic sewage treatment agent and belongs to the technical field of sewage treatment agent preparation. The organic sewage treatment agent comprises the following raw materials in parts by weight: 20 to 40 parts of whole-cell lipase, 10 to 20 parts of cellulose, 10 to 20 parts of fatty alcohol-polyoxyethylene ether, 8 to 16 parts of sec-Nonylphenol Ethoxylates, 6 to 12 parts of epoxypropane, 10 to 16 parts of aluminum sulfate, 8 to 14 parts of alums, 8 to 16 parts of alkyl-sodium proparesulfonic acid, 4 to 10 parts of hexadecyltrimethyl ammonium nitrate, 6 to 20 parts of dimethyl-bi-dodecyl ammonium nitrate, 2 to 4 parts of ammonium hydrogen sulfite and 2 to 4 parts of hydrazine. The organic sewage treatment agent disclosed by the invention is capable of rapidly removing SS (suspended solid), grease and COD (chemical oxygen demand); the organic sewage treatment agent is high in efficiency and has no corrosivity; the removal rate reaches more than 9 percent, and secondary pollution cannot be caused to sewage in later stage.

The invention discloses a sewage treatment agent, which is prepared from the following raw materials: organic carboxylic acid, modified sisal fiber porous microspheres, polyamino acid, starch xanthateand aminotris(methylenephosphonic acid). A preparation method of the sewage treatment agent comprises the following steps: preparing the modified sisal fiber porous microspheres; adding organic carboxylic acid and polyamino acid into the citric acid modified sisal fiber crosslinked chitosan porous microspheres, fully and uniformly mixing, adding the starch xanthate and the aminotris(methylenephosphonic acid), and fully and uniformly mixing again to obtain the sewage treatment agent. According to the sewage treatment agent disclosed by the invention, through compounding of the raw materials, asynergistic effect is achieved, various metal ions in a water body can be captured, and meanwhile, the sewage treatment agent also has remarkable corrosion and scale inhibition effects, so that scaling and corrosion of a system can be effectively reduced, and the production cost is reduced; the treated sewage can reach the discharge standard, the flocculation strength is high, and the hydrophobicproperty is good; and the treated water has no problems of secondary pollution and the like.