767 results about "Polyferric sulfate" patented technology

The invention discloses a PFS-PDMDAAC compound coagulant, a corresponding preparation method and an application method. The PFS-PDMDAAC compound coagulant is prepared as the following steps: the PFS dry powder or solution is arranged in a mixing reactor, and water is added to obtain a ferric-salt PFS solution which is stirred under normal temperature and a PDMDAAC colloid is added into the solution; the mixed solution is stirred under normal temperature till the PDMDAAC colloid is completely dissolved to obtain a stable PFS-PDMDAAC. The application of the PFS-PDMDAAC compound coagulant is to adopt the PFS-PDMDAAC compound coagulant for the coagulation treatment to raw water and waste water and sewage and the dehydration treatment to sludge or silt directly or after dilution with water by any proportion. The component structure and content scope of the invention are distinct to guarantee the capability and stability of the obtained PFS-PDMDAAC compound coagulant, and the materials on industrial manufacturing are available. The various functions of the PFS-PDMDAAC compound coagulant can be adjusted during water treatment with high adaptability so as to reduce cost, reinforce coagulation effect and dramatically enhance the quality of obtained water.

The invention discloses a modifying agent for soda-alkalized paddy field soil. The modifying agent is prepared by mixing polyferric sulfate with polyaluminum sulfate according to the weight ratio of 1:(0.6-1.4) and is suitable for modifying severe soda-alkalized soil into a paddy field; and the modifying method comprises the following steps of: applying the modifying agent to the paddy field soil of the field prior to soil preparation, wherein the application rate is 5.6-18 tons per hectare of soil; carrying out normal soil preparation; and soaking and leaching the soil after the modifying agent is sufficiently mixed with the soil. Compared with the polyferric sulfate, the unit cost of the modifying agent for the soda-alkalized paddy field soil disclosed by the invention is reduced by 9.4-15% under the condition that the same effect is maintained; and compared with the aluminum sulfate soil modifying agent, the macromolecular polymer of the modifying agent has a better flocculation effect and higher modifying efficiency, and meanwhile, the concentration of activated aluminum of soil is controlled to be in a low-concentration level, which is harmless to crops.

The invention relates to the technical field of sewage treatment and particularly relates to an industrial wastewater treating agent. The industrial wastewater treating agent comprises the following components in parts by mass: 0.8-3 parts of polyacrylamide, 25-35 parts of aluminium polychlorid, 25-55 parts of alums, 3-8 parts of iron trichloride, 0.8-3.4 parts of polymeric ferric sulfate, 1.2-2.5 parts of a coagulant aid, 2-10 parts of plant fiber, 10-30 parts of coal ash, 0.8-2.5 parts of sodium silicate, 2.5-5 parts of sodium sulfite, 0.5-3.5 parts of sodium hypochlorite, 5-10 parts of hydrogen peroxide, 8-15 parts of a sodium carbonate-sodium bicarbonate buffer system and 10-20 parts of sodium-based bentonite. The treating agent has the beneficial effects of wide treated pollutant range, good effect, wide production raw material source, environmental friendliness, no toxicity, good discharged water quality, short process flow, and high process operating safety. The treating agent disclosed by the invention can treat various kinds of wastewater such as chemical wastewater produced in oil fields, mining, steel, electroplating wastewater, dyes, pesticides, wine-making and chemical engineering, and sanitary sewage, papermaking wastewater, river and lake water, rubbish seeping water, leather-making wastewater, and the like; and the treating agent is good in treatment effect.

The invention relates to an efficient ecological type sewage and sludge treating agent and a preparation method thereof. A flocculant X consists of sodium carboxymethyl cellulose, polyferric sulfate and sodium bentonite with the weight ratio of 2:7:1; and a coagulant aid Y consists of starch, 2nd generation polyamide-amine, sodium hydroxide and ammonium persulfate with the weight ratio of 10:8:2:0.05. The invention overcomes the defects that the production process of multi-generation PAMAM dendritic polymer needs to be repeated many times, and the cycle time of each generation is overlong, which seriously affects the production process and greatly reduces the production efficiency, so the contamination control enterprises can not apply the multi-generation PAMAM dendritic polymer. The invention does not have the defects of high amide monomer residue in wastewater treatment by polyacrylamide and low production efficiency of the 4th generation polyamide-amine dendritic polymer, greatly increases the production efficiency, and enables the treating agent to have handleability and contamination removal and control effects.

The invention discloses a method for preparing inorganic polymeric flocculant polyferric silicate sulfate and a wastewater treatment method. Ferrous sulfate is oxidized into polyferric sulfate through the acclimated thiobacillus ferrooxidans; polymerization reaction is conducted between the polyferric sulfate and the active polysilicic acid solution; and then the polymerization reaction product is left to stand and ageing to obtain the brownish red liquid polyferric silicate sulfate. The product brownish red liquid polyferric silicate sulfate is applicable to the purification of domestic sewage, printing and dyeing wastewater and heavy metal wastewater and COD removal rate, decoloring rate and heavy metal removal rate can reach more than 90%.

The invention relates to the technical field of sewage treatment, particularly an industrial sewage treating agent. The industrial sewage treating agent is composed of the following components in parts by mass: 1.2-2.8 parts of polyacrylamide, 30-50 parts of alum, 4-6 parts of iron trichloride, 1.2-3 parts of polyferric sulfate, 1.2-2.5 parts of coagulant aid, 3-8 parts of potassium persulfate, 12-28 parts of starch, 1.2-2.5 parts of urea, 5-10 parts of hydrogen peroxide, 5-20 parts of solvent-type lignin, 10-15 parts of sodium phosphate-sodium dihydrogen phosphate buffer system and 10-20 parts of bentonite. The industrial sewage treating agent has the advantages of wide pollutant treatment range, favorable effect, wide production raw material sources, environment friendliness, no toxicity, good effluent water quality, short technical process and high technical operation safety. The treating agent can treat various types of sewage, such as chemical wastewater in oilfields, mines, iron and steel, electroplating, dyes, pesticides, wine making, chemical industry and the like, and domestic sewage, paper mill wastewater, rivers and lakes, garbage seep water, tanning wastewater and the like. The treating agent has favorable treatment effect.

The microwave method of demulsifying and purifying emulsifying liquid waste water in water processing field features that microwave irradiation is adopted in processing emulsifying liquid waste water. The flocculating demulsifier solution is compounded with calcium chloride, aluminum chloride, ferric chloride, aluminum sulfate, ferric sulfate, polyaluminum sulfate, polyferric sulfate and polyacrylamide and the added amount is 0.5-25.0 g/L. The microwave has frequency 2450 MHz or 915 MHz, power 0.4-64 kw, and irradiation time 1-5 min. The microwave demulsifying reactor consists of mainly microwave generator and demulsifying reactor. The present invention has the advantages of oil content lowering rate over 95 %, CODCr lowering rate of about 80 %, short reaction time, low reaction power consumption and easy oil-water separation.

The invention discloses a sewage treatment agent special for printing and dyeing wastewater. The sewage treatment agent is prepared from, by weight, coal ash, wooden activated carbon, poly aluminium chloride, polyferric sulfate, polyacrylamide, ammonium persulfate, sodium carbonate, poly-ferric aluminum sulfate, aluminum sulfate, yttrium oxalate, manganese sulfate, sodium bentonite, zeolite, sepiolite, modified lignin sulfonate, alkylphenol ethoxylates, amino trimethylene phosphonic acid, menthone, thiourea, cationoid starch derivatives, sodium dodecyl benzene sulfonate, dimethyl diallyl ammonium chloride, octaphenyl polyoxyethyiene, glycerin monostearate, peroxiredoxin and microbial bacterial liquid. The microbial bacterial liquid is prepared from saccharomycetes, fusarium oxysporum, proteusbacillus vulgaris, neurospora and mycoplana. The invention further provides a preparation method of the sewage treatment agent. The prepared sewage treatment agent is good in treatment effect on the printing and dyeing wastewater, the preparation method is simple, and no secondary pollution exists.

The invention provides a novel inorganic compound phosphoric polyferric sulfate flocculant and a production technology thereof. The flocculant can be used in both water treatment and sewage treatment thereby being multifunctional. The phosphoric polyferric sulfate of the invention takes the by-products generated in titanium pigment production, such as ferrous sulfate, phosphoric acid and the like for producing titanium pigment as raw materials thereby having the characteristics of utilization of waste products, simple components, low cost and the like. The production technology of the invention is convenient, has simple operation and can be carried out at normal temperature and normal pressure. In the production process, no liquid waste, waste gas and waste residue can be generated, and the production technology belongs to the cleaner production technology. The invention can be widely applied in water treatment and sewage treatment. Especially in water treatment, the phosphoric polyferric sulfate flocculant of the invention is added to effectively remove soluble phosphorus and phosphorus in other forms in water as well as algae in algae waste water, lower chemical oxygen demand (COD), total phosphorus (TP), suspended solid (SS), chlorophyll (chl-a) and the like.

The invention provides a preparation method of polyferric sulfate. The method is that a sulfuric acid aqueous solution and ferrous sulfate are mixed to obtain a mixing solution of which the pH is 0.5 to 1.5; the mixing solution and hydrogen peroxide respectively individually flow through independent flowing channels and then are synchronously poured into a reaction system to react to obtain polyferric sulfate. With the adoption of the method, the oxidizing capacity of hydrogen peroxide can be improved, the rate of converting ferrous ions into ferric ions can be increased, and moreover, ferrous ions and hydrogen peroxide can fully contact and rapidly react; therefore, the problem of decomposing of hydrogen peroxide at a high temperature or strong acid condition in the prior art can be effectively solved, the dosage of hydrogen peroxide can be reduced, the cost input can be decreased, the operation process is simplified, and the reaction time is greatly reduced. The quality of polyferric sulfate prepared by the method meets indicators as specified by national standard on top quality goods; with the adoption of the polyferric sulfate to treat wastewater, the COD of drained water can be stabilized to be less than or equal to 86mg/L, so that the method is applicable to industrial production.

The invention discloses an efficient sewage treatment agent. The efficient sewage treatment agent is prepared from polymeric aluminium, polyferric sulfate, activated sludge, pectinase, quaternary ammonium salt lignin flocculant, 1,3,5-triazine-2,4,6-(1H,3H,5H)-trithione trisodium salt, polyacrylamide, ferric trichloride, amino trimethylene phosphonic acid, sodium dodecyl benzene sulfonate, phosphorus pentoxide, plant ash, poly(ethylene imine), cross-linked rectorite, sodium bentonite, zeolite powder, cocoanut active charcoal, kieselguhr, anhydrous magnesium sulfate and microorganism bacteria solution. The microorganism bacteria solution is composed of saccharomycetes, flavobacterium, nocardia and aspergillus ustus. The invention further provides a method for preparing the efficient sewage treatment agent. The efficient sewage treatment agent has a remarkable steel making wastewater treatment effect and can become effective quickly, steel making wastewater treatment cost can be reduced, and treated water can meet the discharge standard so as to be directly discharged or recycled.

The invention discloses a new technology for preparing manganese sulfate solution which is used for electrolyzing manganese metal and recycling iron through the atmospheric pressure leaching of pyrolusite and iron scraps. The technology comprises the following steps: adding pyrolusite in a certain concentration of sulphuric acid solution, mixing evenly; adding iron scraps used as the reductant in a reaction tank, performing mechanical agitation for 1h-3h under different reaction temperatures to obtain reaction leachate; according to the changes of the reaction time and the pH value, adding heavy calcium carbonate and ammonia water in turn to adjust the pH value of the solution to 6.3-6.7; then adding sodium N,N-dimethyl dithiocarbaminate (SDD) to remove impurities such as heavy metal ions and purify; filtering, adding additive to obtain manganese sulfate solution used for electrolyzing manganese; and recycling iron from filter residue through alkali leaching and acid leaching to produce polyferric sulfate. The invention has the advantage that iron scraps are used as the reductant which have wide sources and rich raw materials and can be leached out under the atmospheric pressure; and iron scraps can be recycled to produce the water purification agent and have great economic benefit.

The invention discloses a water quality improving method by algae control of a compound ecological environment-protection algae control agent, which comprises the following steps: A. area selection: girding an experimental zone; B. algicide preparation: diluting hydrogen peroxide with tap water and arranging the hydrogen peroxide in the shade; C. flocculant preparation: preparing industrial-grade polyferric sulfate into a solution and diluting with water; D. lake sediment preparation: taking pythmic sediments, drying and crushing the sediments, preparing a turbid liquid, and stirring silt sunk into the bottom to the upper layer; E, the dosage and spraying condition of the algicide: uniformly spraying the diluted H2O2 in proportion in an enclosure with surface water bloom and spraying; F. sediment turbid liquid spraying: spraying the turbid liquid in proportion on the water surface in an atomization mode; and G. flocculation sedimentation implementation: sprinkling the polyferric sulfate solution into the water, stirring, standing still and settling. The method is simple and convenient to operate, has low cost, increases transparency, has obvious substrate improvement effect, has zero pollution on the water remediation, and has high environmental, social and economic benefits.

The invention relates to an urban reclaimed water treatment method, in particular to an advanced treatment method of urban reclaimed water used as cooling water for a power plant. The advanced treatment method of urban reclaimed water for the power plant of the invention comprises the following steps: carrying out aeration treatment and filtering; adding slaked lime, coagulant polyferric sulfate and efficient coagulant aid; adding bactericide for sterilizing; and adding composite scale and corrosion inhibitor, and after mixing the mixture evenly, adding the mixture to circulating water of the power plant. The advanced treatment method of the invention solves the related technical problems of advanced treatment, sterilization, scale inhibition, corrosion prevention, ammonia nitrogen treatment and the like of the reclaimed water involved by reclamation of the reclaimed water in the power plant, and provides technical support for safe and economical use of the reclaimed water in the power plant, and the reclaimed water is used as make-up water for the circulating water in the power plant, and has very obvious economical, social and environmental benefits.

A disclosed water quality modified is composed of disodium ethylene diamine tetraacetate, citric acid, potassium monopersulfate triple salt, polyferric sulfate and phytic acid according to a weight ratio. The water quality modifier is good in water solubility, helps to purify water, improve water quality, reduce the mortality and elimination rate and increase breeding income, is widely applicable to modification on poultry and livestock drinking water and aquaculture animal water source.

The invention provides a method for preparing special mirabilite with high purity, which comprises the following steps: pumping hot water at 40 DEG C-70 DEG C by a pump and dissolving mirabilite in ore to form niter water containing various impurities; calculating the content of added sodium carbonate with the excess of 10 percent-20 percent according to the detected content of calcium and magnesium ions in the original niter water during chemical impurity removal processing; calculating the content of added sodium sulfide with the excess of 20 percent-30 percent according to the detected content of heavy metal ions including ferrum, arsenic, lead, cadmium, antimony, and the like in the original niter water; then adding sodium hydroxide to lead the pH value of the niter water to reach 9-11; adding 0.1-0.3 percent by weight of polyferric sulfate and polyaluminum-ferric chloride sulfate to enable various generated sediments to settle; and finally adding sulfuric acid to adjust the pH value of the niter water to reach 7-7.5. The wet niter containing crystal water is processed by a fluidized bed after standing at 45 DEG C-80 DEG C for 0.5 hour-3 hours in a heat preservation way, thereby obtaining anhydrous special mirabilite with high purity. The mirabilite can not be caked during long-term placement at room temperature and can be widely applied to industries of foods, medicines, and the like.

The invention relates to a waste water processing medicine capable of realizing high efficiency decolouring, decyanation, and degradation of COD. The waste water processing medicine capable of realizing high efficiency decolouring, decyanation, and degradation of COD comprises, by weight, 10 to 70 parts of active carbon, 10 to 60 parts of diatomite, 1 to 30 parts of a ferric salt, 1 to 30 parts ofan aluminum ferric salt, and 0.5 to 15 parts of a strong oxidant; the ferric salt is one selected from polymeric ferric sulfate, polymerization ferric chloride, and ferrous sulphate; the aluminum ferric salt is one selected from polyaluminum ferric chloride, polymeric ferric aluminum silicate, and polymeric aluminum ferric sulfate. The advantages are that: excellent flocculation, adsorption, andhigh oxidation functions are achieved; the waste water processing medicine can be used for removing cyanides and COD in waste water at the same time, and is capable of realizing effective decolouring;obtained processed water is low in chroma; efficiency is high; no equipment corrosion is caused; and the preparation method is simple.

The invention provides a preparation method of modified polyferric sulfate. Kaolin and talcum are utilized to perform modification treatment on the polyferric sulfate. When the modified polyferric sulfate is used in a waste paper papermaking advanced wastewater treatment technique, the pollutant removal ratio is high, and the chroma removal effect is good: the removal ratio of the modified polyferric sulfate for COD (chemical oxygen demand) in wastewater is up to 71.9-75%, the SS (suspended sediment) removal ratio is up to 64-75%, and the chroma removal ratio is up to 88.3-96.9%. Under the same conditions, compared with the polyferric sulfate, the COD removal ratio is enhanced by 8.3-11.2%, the SS removal ratio is enhanced by 9-12.5%, and the chroma removal ratio is enhanced by 6.9-8.3%. The modified polyferric sulfate has high flocculation speed and has the same decolorization effect; and the consumption of the modified polyferric sulfate is greatly lower than that of the polyferric sulfate, so the generated chemical sludge quantity is low, thereby saving the cost and simplifying the technique.

The invention discloses compound treatment agents for oily sludge containing polymers and a usage method thereof, and belongs to the technical field of polymer-containing oily sludge treatment in petroleum oilfield. The compound treatment agents for the oily sludge containing the polymers comprise an agent A, an agent B, an agent C and an agent D; the agent A is composed of sodium carbonate, sodium silicate and sodium hydroxide; the agent B is composed of an OP emulsifier, Peregal, Triton X-100 and sodium dodecyl benzene sulfonate; the agent C is composed of sodium hypochlorite and hydrogen peroxide; and the agent D is composed of aluminum sulfate, sodium sulfate and polyferric sulfate. The usage method of the compound treatment agents for the oily sludge containing the polymers comprisesthe following steps: a, putting oily sludge containing polymers into a reaction kettle, adding water, and carrying out heating with stirring; b, adding the agent A and carrying out uniform stirring, adding the agent B and carrying out uniform stirring, adding the agent C and carrying out uniform stirring, and adding the agent D and carrying out uniform stirring; and c, performing standing-precipitating on the mixture of the oily sludge and the water, and separately retrieving oil, sludge and water after stratification. The compound treatment agents for the oily sludge containing the polymers and the usage method thereof are capable of realizing effective separation on the three phases of oil, sludge and water in the oily sludge containing the polymers so as to achieve reduction and resource recycling; and thus, the problem of performing harmless treatment and resource recycling on hazardous solid waste from oilfield is effectively solved.

The invention discloses an emulsified liquid waste water treatment method; in the method, active life sludge culture is carried out to domestic sewage, the life sludge generated in the domestic sewage treatment process is utilized to carry out adsorption treatment to pollutants of the emulsified liquid waste water, so as to skillfully use nutritive materials in the domestic sewage and the active sludge generated in the domestic sewage treatment process. Heating treatment and the operation of feeding the combination of lime milk and polyacrylamide PAM are carried out in the emulsified liquid breaking and solid-liquid separation links, aluminium polychlorid or polyferric sulfate or other coagulant is not used, the sludge amount is less and the solid-liquid separation effect is good when sedimentation is carried out. A chemical method, a microorganism method and a physical method are systematically combined, by adopting skillful process combination and on the basis of low cost operation, the oil content of the generated solid sludge is low, so as not to need to treat the solid sludge as hazardous waste and lead the emulsified liquid waste water to reach the three-level discharge standard requirements of GB8978-1996 integrated wastewater discharge standard.

The invention provides a potato starch waste water macro-molecule organic matter separation treatment special-purpose flocculating agent. The flocculating agent comprises, by mass, 20-30% of ultrafine attapulgite, 18-22% of polyacrylamide, 5-10% of iron chloride, 8-12% of urea, 15-19% of polyaluminum chloride, 17-21% of polyferric sulfate and 1-2% of natural cation polysaccharide chitosan. The organic matters and inorganic matters are compounded and produce synergism so that flocculation effects are obviously improved and a COD clearance rate is improved to 90%. Through the special-purpose flocculating agent, after one flocculating settling process, the potato starch waste water has a COD concentration reduced to 1000-2000mg/L from 10000-30000mg/L and the black waste water becomes clear and transparent.