47results about How to "Effective flocculation" patented technology

The invention discloses a preparation method of compound algicide with a high alga removal rate and belongs to the technical field of algicide. According to the preparation method disclosed by the invention, coal ash and expanded graphite are mixed to serve as a carrier, saccharose is utilized as an outer coated carbon layer precursor, and the carrier and the saccharose are prepared into visible-light catalytic active compound algicide with visible-light catalytic activity is prepared through chitosan adsorption and copper ion coating; the compound algicide is in a worm shape and has good floatability, and an the alga removal rate of the algicide is improved; under irradiation of light, alga can generate oxygen on the surface through photosynthesis, the alga is accelerated to die, a descent rate of a chlorophyll content of the alga is quickened continuously, the alga is accelerated to die, and the alga removal rate of the algicide is improved againfurther; the chitosan and the coal both have better flocculation capacity and adsorption capacity, and the chitosan can generate amino groups with positive charge after reacting with hydrochloric acid; when the amino groups are more, an acid solution and magnetite powder are utilized to jointly modify the coal ash and the expanded graphite; thus, the alga removal rate of the algicide is further improved; the algicide has a wide application prospect.

The invention relates to a paint spray mist coagulant which shows a good effect on viscous dissipation and coagulation for a solvent-based coating and a water soluble coating. The paint spray mist coagulant is especially applicable to circulating water treatment of a wet type paint spray mist removal system. The paint spray mist coagulant comprises an agent A, an agent B and an agent C, wherein the agent A is a linear high-molecular polymer which has high electric neutrality and can quickly neutralize the paint particle charge and warp the paint particles to realize viscous dissipation; the agent B is an aqueous solution prepared through etherified modified potato starch waste residues with molecular weight of 50,000 to 60,000, which enables the viscosity-free paint particles to be collected; the agent C is used for regulating the pH (Power of Hydrogen) of the circulating water. The invention also provides a preparation method and application of the paint spray mist coagulant. The paint spray mist coagulant is simple in preparation method and convenient in application; the potato starch waste residues are utilized as the raw materials of the agent B, so that the secondary utilization of wastes is realized, and the effect of treatment of wastes with processes of wastes against one another is reached; in addition, the paint spray mist coagulant has the biodegradability so that secondary pollution caused by the application in water can be avoided, and the environmental load can also be reduced effectively.

The invention discloses an environment-friendly variable range flocculation unit for sewage treatment. The environment-friendly variable range flocculation unit comprises a flocculation tank, wherein a first stirring shaft is arranged in the flocculation tank; helical mixing blades are arranged on the outer part of the first stirring shaft; a driven gear is arranged on a part, which is positioned below the flocculation tank, of the first stirring shaft; one side of the driven gear is meshed with a driving gear; the driving gear is driven by a first motor; a first cavity is formed in the lower half part of the first stirring shaft; the lower end of the first stirring shaft is communicated with an air inlet pipe through a rotary air pipe joint; a plurality of first through holes communicated with the interior of the flocculation tank are formed in the first cavity; a second cavity is formed in the upper half part of the first stirring shaft; and a plurality of second through holes communicated with the flocculation tank are formed in the second cavity. The environment-friendly variable range flocculation unit disclosed by the invention has the beneficial effects that the sewage and flocculating agent are effectively mixed by utilizing a horizon bar, effective flocculation can be realized by utilizing the helical mixing blades and gas-flow mixing, and the sewage treatment effect is improved.

The invention discloses a coagulant for treating polysulfonate slurry sewage. The coagulant for treating the polysulfonate slurry sewage provided by the invention comprises calcium hydroxide or calcium oxide, and ferric sulfate or ferrous sulfate. The coagulant for treating the polysulfonate slurry sewage provided by the invention is used for treating the sewage containing polysulfonate slurry; the CODCr (Chemical Oxygen Demand) of the treated sewage is reduced by 70-85 percent; the chrominance is determined by using a dilution multiple method and can be reduced to 180-220; the subsequent physicochemical treatment and biochemical treatment can more easily reach standards; and the treatment cost is low.

The invention discloses a method for adsorbing and extracting 1,3-propanediol from a zymotic fluid by using cationic resin, which relates to a method for separating a microbial fermentation product. The method comprises the following steps of: adjusting the pH of a 1,3-propanediol zymotic fluid to 1-7, adding a flocculating agent and active carbon, stirring, standing and naturally settling; removing thalli, proteins and other insoluble solid particles in the obtained zymotic fluid with a centrifuging or filtering method to obtain a supernatant; adsorbing 1,3-propanediol in the obtained supernatant by using cationic resin, and loading onto a column at the flow speed of 0.5-2.0mL/min; adsorbing with a resin column to a saturated state, washing, eluting, and collecting an eluent; and distilling the obtained eluent which contains 1,3-propanediol under reduced pressure to obtain a 1,3-propanediol product of which the purity is 98-99.6 percent. The method has the advantages of freeness from pollution, small investment, reduction in the separating cost of 1,3-propanediol, saving in time and increase in production efficiency.

A river ditch sewage ecological strengthening self cleaning method is as follows: river ditch sewage passes through bio-based weir wetland oxidation pond comprising multi stage base weirs, each stage base weir comprises a levee slope biological vegetation or a percolationmaterial, landscape aeration, sprinkler irrigation aeration, a wetland, a base weir and a base weir front sedimentation ditch and a base weir rear sedimentation ditch, and a horizontal plane between the two stage base weirs is located at the position of 1 / 2-2 / 3 of the height of an upper-stage base weir and the top of a lower-stage base weir, and the sedimentation ditches have the depth of 0.5 m and width of 1 m.

The invention discloses an arsenic adsorption treatment agent and a preparation method thereof. The arsenic adsorption treatment agent comprises components in parts by weight as follows: 50-60 parts of epoxy chloropropane, 8-11 parts of hydroxymethyl methylcellulose, 5-8 parts of diatomite, 2-4 parts of ferrous sulfate, 2-3 parts of starch sodium phosphate, 1-3 parts of sodium alginate, 1-2 parts of ethylene diamine and 0.5-1 part of triethylamine. The invention further provides the preparation method of the arsenic adsorption treatment agent.

The invention discloses an advanced treatment method for heavy alkylbenzene sulfonate (HABS) industrial wastewater, belonging to the technical field of water treatment and comprising the following steps: regulating the pH value of the HABS industrial wastewater to be 2-4 firstly, feeding the HABS industrial wastewater after pH value regulation in a container, and putting at least two polar plates in the container, wherein the two polar plates are respectively connected with the positive and negative poles of a DC regulated power supply; regulating the current intensity of the DC regulated power supply to 2-10A, and processing for 2-10min, wherein the used polar plates are iron polar plates; standing and settling for 30min, taking supernate, regulating the pH value of the supernate to be 7.5-9.5, pouring a composite water treatment agent based on the mass ratio of 1-2g/L, stirring, and standing and settling for 1h, wherein the composite water treatment agent is prepared by compounding diatomite with aluminum polychloride, ferrous sulphate heptahydrate, aluminum sulfate aluminium sulfate octadecahydrate or polymerized aluminium ferric sulfate based on the mass ratio of 3:1-6. the advanced treatment method in the invention lowers COD index, has simple operation and is easy to realize automatic control, and the generated sludge can be used as an auxiliary material for subgrade and brickmaking, and has relative low cost.

The invention discloses methods for producing water-soluble bioflocculant Soraean gum through solid-state fermentation of Agrobacterium ZX09 by using an inorganic-salt culture solution and treating high-turbidity and eutrophicated river/lake water. According to the methods, Agrobacterium is subjected to solid-state fermentation in the culture solution prepared from inorganic salts so as to obtain a viscous metabolic product, ethanol of a volume which is twice that of fermentation liquor is added into the fermentation liquor for precipitation, and a precipitate is subjected to vacuum drying, so that a crude product of bioflocculant Soraean gum can be obtained. A Soraean gum solution is prepared, kaolin, diatomite, activated carbon, yeast particles and suspension particles are put into wastewater, the crude product of Soraean gum and polymeric ferric sulfate are used in a compounded manner so as to treat the high-turbidity and eutrophicated river/lake water, and then, the particle content and COD (Chemical Oxygen Demand) content of the river/lake water can be lowered effectively; the flocculation activity is high, the usage amount is small, the flocculation rate is high, and the pH range applicable to treatment is wide, so that environmental conservation and large-scale industrial production are facilitated.

The invention discloses a waste water treatment material for removing lead ions in water and a preparation method of the waste water treatment material. The waste water treatment material for removing the lead ions in the water is prepared from, by weight, 20-25 parts of aluminum sulfate, 10-20 parts of polymerized iron sulfate, 5-11 parts of clay, 5-11 parts of sodium hypochlorite, 3-5 parts of hydroxypropyl methyl cellulose, 3-5 parts of starch phosphomonoester, 1-2 parts of cresol diphenyl phosphate, and 1-2 parts of polydimethylsiloxane di-quaternary ammonium. The invention further provides the preparation method of the waste water treatment material for removing the lead ions in the water.

The invention belongs to treatment and comprehensive utilization of three wastes and relates to a method for treating papermaking wastewater by adopting a nano chitosan composition flocculation system. Currently, most of flocculating agents for treating the papermaking wastewater are polymeric aluminum salts and cation polyacrylamide, the polymeric aluminum salts and the cation polyacrylamide have insufficient flocculation capability for pollution sources in the wastewater, and precipitates have defects of coarse particles, loosening and the like. Nano chitosan sol has a three-dimensional network conformation and has excellent flocculation characteristic. Compared with a composition of the polymeric aluminum salts and the cation polyacrylamide, the nano chitosan composition flocculation system has the advantages that the relative flocculation rate (percent) for the pollution resources in the wastewater is improved by 40 percent; in treated supernatant water, an SS (Suspended Solid) value is similar and a CODcr (Chemical Oxygen Demand) value and a BOD5 (Biochemical Oxygen Demand) value are reduced by 8 to 12 percent; and the treatment cost is only 26 percent of the treatment cost of the composition of the polymeric aluminum salts and the cation polyacrylamide. By microscopic observation, adsorption points are formed by flocculate in a fiber and chitosan sol network, fine particles are precipitated and the precipitation is compact. The nano chitosan composition flocculation system is a pure natural flocculation material with both high activity and biodegradability.

The invention discloses an environment-friendly sticky standby impregnation solution for preparing dust collecting cloth and relates to the technical field of processing of dust collecting cloth. The standby impregnation solution is prepared from the following the following raw materials in parts by weight: 15-20 parts of ethylene glycol diglycidyl ether, 5-10 parts of activated clay, 4-8 parts of polyethylene oxide, 3-6 parts of carbomer resin, 3-6 parts of wheat straw dry powder, 2-4 parts of allyl glycidyl ether, 2-4 parts of pine needle meal, 1-2 parts of C5 hydrogenated petroleum resin, 1-2 parts of sesbania gum, 0.5-1 part of rice bran wax, 0.5-1 part of sulfide lard, 0.5-1 part of triallyl cyanurate, 0.1-0.3 part of a rare-earth composite additive and 100-150 parts of water. The ingredients in the impregnation solution can be quickly and firmly attached to nonwoven fabric, and form a cleaning layer with an excellent cleaning effect on dirt and dust; the cleaning layer has dual effects of adsorption and flocculation; and the removal rate on the dirt and dust can reach over 99.7%.

The invention discloses a water-based paint mist coagulant, and a preparation method and an application thereof. The water-based paint mist coagulant is composed of an anti-sticking agent A and a flocculating agent B. The effective components of the anti-sticking agent A are an inorganic metal salt and a cationic monomer, the mass ratio of the inorganic metal salt to the cationic monomer is (8-12): 1, and the mass percentage of the effective components in the anti-sticking agent A is 5-40%. The effective components of the flocculating agent B are two of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the effective components in the flocculating agent B is 0.1-3%. Through the combination and proportioning, the flocculation is fast; the decolorization rate is high; paint slag is not easy to sink and can float upwards for a long time, so that the clarity of the wastewater can be ensured; the water-based paint mist coagulant has good viscosity reduction and coagulation effects on water-based paints, the water-based paints can be thoroughly debonded, floating paint slag can be bonded into large blocks, fishing is easy, and pH does not need to be adjusted.

The invention discloses a coffee processing wastewater treatment process. The process comprises the following steps that: wastewater is filtered by coarse and fine grids and then fed into a water collecting tank and a centrifuge for separation and filtration; the separated and filtered wastewater is fed into an adjusting tank for mixing; the mixed wastewater is fed into ZC electro-catalysis equipment to be subjected to pulse current impact and electro-catalysis treatment; sludge generated by wastewater oxidation by the ZC electro-catalysis equipment matched with a precipitator is fed into a sludge concentration tank and is treated by a sludge dewatering machine and then transported outwards for treatment; the sludge-removed wastewater is input into a biochemical treatment unit, the biochemical treatment unit comprises an anoxic membrane pool, an aerobic membrane pool, a facultative membrane pool and an MBR membrane pool, and water generated after biochemical treatment is sent into a clean water pool for disinfection and then is discharged after reaching the standard. The process can be used for effectively treating the wastewater generated by coffee processing.

The invention discloses a device for providing a deep magnetic path spiral magnetic field to regulate and control movement of magnetic particle groups in ore pulp. The device comprises a frame. An upper support plate is fixedly arranged above the frame. The device further comprises an aluminum rotating ring, a rotating ring connecting plate, a rotating shaft, an inner support rod and a vessel support ring which are arranged above the upper support plate. Neodymium iron boron magnetic steel distributed from bottom to top in an annular spiral is embedded in the inner wall of the aluminum rotating ring. The rotating ring connecting plate is fixed to the bottom of the inner side of the aluminum rotating ring. An inner support rod is arranged in the rotating shaft. The inner support rod penetrates the center of the rotating ring connecting plate and extends into the aluminum rotating ring. The vessel support ring is fixed to the top end of the inner support rod. The lower part of the rotating shaft is rotationally connected with a bearing in the upper support plate. The lower part of the rotating shaft is connected with a driving device for drilling the rotating shaft to rotate. According to the device, loading of the secondary sports field of the magnetic particle groups is carried out on the stirred ore pulp, sufficient contact between the target mineral and a flocculating agent can be satisfied as far as possible, inclusion of gangue minerals can be avoided, the quality of a flocculating body can be improved, and a foundation can be laid for the next flotation.

The invention discloses an environment-friendly water treatment flocculation material and a preparation method thereof. The above-mentioned environment-friendly water treatment flocculation material is made of the following components by weight: 30-40 parts of polyacrylamide, 20-28 parts of polyferric chloride 6-11 parts of lignin, 3-6 parts of peroxycarbonate, 3-5 parts of aluminum sulfate, 2-5 parts of isooctyl acrylate, 1-3 parts of 4-hydroxy-3-methoxybenzoic acid, 1-2 parts of ethylene glycol montan cerate, 1-1.5 parts of polydimethylsiloxane diquaternary ammonium salt and 0.8-1.2 parts of ammonium bicarbonate. The invention also provides a preparation method of the environmental protection water treatment flocculation material.

The invention discloses an environment-friendly sewage treating agent which is prepared from the following components: polyepoxysuccinic acid, tetrabutyl titanate, polysilicate ferric chloride, acidized silver-loaded active carbon, 2,6-xylenol, organic amine, polyaspartic acid, kaolin, soluble metal salt and a dispersing agent. The provided treating agent is high in adsorption capacity, stable in heavy metal adsorption and free of secondary pollution, has high speed and good adsorption, flocculation and treatment effects, can meet the discharging standard, is stable in treating effect and is environment-friendly and non-toxic.

The invention discloses a reagent for separating sludge and water from pored pile waste sludge. In every 500mL of sludge, the reagent is prepared from the following components in parts by weight: 1.2-1.6 parts of quick lime, 0.5-0.8 part of ardealite and 0.1-0.2 part of anionic polyacrylamide. The reagent has the effects that the anionic polyacrylamide (APAM) enables sludge to settle under the effects of gravity and the like to achieve the effect of flocculating waste sludge; the waste sludge is treated with quick lime, flocculation and modification of the waste sludge can be realized, and a sterilizing effect can be achieved; when the ardealite is added into quick lime, adverse influence generated by soluble impurities in the sludge can be eliminated, and soluble phosphorus in the ardealite quickly reacts with the quick lime in an alkaline environment, so that the dehydration speed of waste sludge can be accelerated, and an excellent effect of treating waste with waste can be effectively achieved. Waste sludge treated by a flocculation mode has the characteristics of (1) simple treatment steps; (2) short treatment time; and (3) low treatment cost.

The invention relates to the field of sewage treatment, and particularly discloses a composite water quality agglutination purifying agent and a preparation method thereof. The composite water quality agglutination purifying agent is prepared from the following components in parts by weight: 550 to 600 parts of calcined silica, 30 to 70 parts of rare earth porcelain sand, 20 to 65 parts of white mica, 90 to 120 parts of polyaluminum chloride, 15 to 50 parts of serpentine and 15 to 45 parts of polyacrylamide. The preparation method comprises the following steps: respectively crushing the muscovite, the serpentine and the rare earth porcelain sand, mixing, adding water accounting for 10-15% of the total weight of the muscovite, the serpentine and the rare earth porcelain sand, carrying out ball milling, drying and sieving, adding the calcined silica, the polyacrylamide and the polyaluminum chloride, and uniformly mixing. The composite water quality agglutination purifying agent has the advantages of being not affected by water temperature, suitable for both hot areas and severe cold areas, wide in applicable water quality range, high in removal rate of COD, TN, TP and the like, and capable of achieving the immediate and long-acting removal effect on algae.

The invention discloses a drilling cutting treatment agent and a preparation method thereof. The treatment agent is prepared from the following raw materials in parts by weight: 10-20 parts of aluminum salts, 3-8 parts of iron salts, 30-40 parts of chlorosilane, 0.2-0.5 part of steric hindrance agent, 0.4-0.8 part of oxidant and 100-1500 parts of water; and the drilling cutting treatment agent isan iron aluminum silicate polymer which is produced by the copolycondensation reaction using high activity silicic acids, aluminum ions and iron ions under the action of the steric hindrance agent andthe oxidant, and provided with a three-dimensional structure. The polymer can not only effectively flocculate various particles in drilling cuttings, but also react with various chemical treatment agents in the drilling cuttings to generate harmless precipitates; and heavy metal ions in the drilling cuttings can further be absorbed and purified to form pores with inert crystals embedded in the drilling cuttings, and thus the compactness and compressive strength of the cuttings are greatly enhanced. According to the drilling cutting treatment agent, the surface hardness of treated cuttings isincreased, the recovery and utilization of the drilling cuttings are convenient, and harmless treatment and recovery of the drilling cuttings are achieved.

The invention relates to a production method of crystallized water threose. The production method comprises the following steps: after cleaning and slicing the raw materials, putting the raw materials into an extraction bath or an extraction tank and extracting with clean water so as to obtain an extraction liquid; after boiling the extraction liquid, cooling to below 40 DEG C, saturating by CO2 gas, and after the extracting liquid is turbid, neutralizing by lime; filtering, decoloring particles by a carbon column and decoloring, deashing and desalting by using ion exchange resin; then, filtering by use of a polysulfone hollow fiber membrane and vacuumizing and evaporating to obtain syrup with the solid content which is greater than or equal to 70%; and purifying water threose by using a dynamic crystallization process or a static crystallization process so as to obtain water threose with the purity over 95%. The production method is simple and easy to operate and high in crystallization efficiency, and the extraction ratio can reach over 70%.