60results about How to "With flocculation" patented technology

The invention relates to the technical field of sewage treatment, and specifically discloses a composite sewage treatment agent based on an inorganic non-metallic mineral material. The composite sewage treatment agent is prepared from the following raw materials in parts by weight: 20 to 40 parts of bentonite, 20 to 30 parts of modified fly ash, 10 to 20 parts of kaolin, 10 to 20 parts of activated diatomite, 2 to 5 parts of magnesium oxide, 5 to 10 parts of calcium hydroxide and 0.2 to 1 part of humic acid. The modified fly ash is prepared by the following method: pretreating fly ash with hydrochloric acid to obtain pretreated fly ash; making the pretreated fly ash into a fly ash suspension, adding acrylamide, stirring and mixing, heating to 60-70 DEG C, and dropwise adding an initiator to react for 2-3 hours, thereby obtaining the modified fly ash. According to the composite sewage treatment agent, through the synergistic effect of adsorption, flocculation and precipitation, variouspollutants such as heavy metals, organic matters and chromaticity in printing and dyeing wastewater can be efficiently removed, and precipitates obtained after wastewater treatment are easy to separate and can be recycled, so that a regenerated composite sewage treatment agent is formed.

The invention discloses a compounded sludge dewatering conditioner and belongs to the technical field of sludge treatment. The compounded sludge dewatering conditioner is prepared through compounding a sludge conditioner A and a sludge conditioner B, wherein the sludge conditioner A is prepared through compounding the following ingredients in parts by weight: 20-30 parts of fly ash, 10-20 parts of quicklime powder, 10-20 parts of magnesia, 20-30 parts of polyaluminum ferric chloride; the sludge conditioner B is an acetic solution of chitosan. The invention further discloses a method of application of the compounded sludge dewatering conditioner.

The invention belongs to the fields of treating odorous pollutants through chemical oxidation technology, and relates to a method for treating odorous gas by utilizing solution of hexavalent ferric salt. Odor is harmful to human respiratory, circulatory, digestive, endocrine and nervous systems, and odor pollution has become one of numerous environmental pollution problems to be solved; and in the method, the solution of hexavalent ferric salt and odorous substances are subjected to a chemical oxidation reaction, so that active groups in the odorous substances are changed. Due to oxidation of the hexavalent ferric salt on hydrogen sulfide, ammonia, methyl mercaptan and other odorous substances in the odorous gas, the active groups in the odorous waste gas are oxidized into non-toxic and harmless sulfate and other products. Therefore, the aim of purifying the odorous waste gas is fulfilled, and the odor of the odorous waste gas can be effectively removed.

The invention relates to water treatment flocculant. The water treatment flocculant comprises, by weight, 8-15 parts of poly-aluminum ferric silicate sulfate, 3-8 parts of chitosan, 4-10 parts of water glass, 5-8 parts of aluminum sulfate and 5-12 parts of ferric chloride. The components are added into water according to the above ratio and can effectively remove impurities and suspended solids in the water, flocculation is quick and treatment effect is good. The water treatment flocculant is high in removal rate of various metal ions in the sewage and can effectively lower color and turbidity of water so as to let water quality conform to higher requirements. The flocculant is added once during use, and operation process is simplified. The quality of the treated sewage is kept consistent, secondary waste of recoiling and dirt suction is reduced and water and energy are saved. The water treatment flocculant can be widely applied to various types of sewage, such as from steel and chemical industry, power, printing and dyeing and domestic sewage.

The invention relates to a method for municipal sludge in-situ detwatering by utilization of Fenton sludge. Sludge is subjected to press filtration and dewatering in a sewage treatment plant, then sulfuric acid is added, activation is carried out, thus iron elements with an ionic state exist in the sludge, plastic drain boards are put into municipal sludge, dewatering pre-treatment is carried out, water is drained through a conventional vacuum precompressed drainage method, the Fenton sludge after activation of sulfuric acid is added in the municipal sludge after pre-treatment, the mixture is stirred uniformly, quicklime is added, stirring is carried out, thus the sludge and calcium oxide are mixed uniformly and rapidly, pH adjustment, deodorizing and disinfection are carried out, and the purposes of deep dewatering and stabilization are achieved. The provided method overcomes the detect of high operation and disposal costs of previous sludge processing. The sludge containing a lot of iron elements as a product of the Fenton oxidation method is employed as a coagulant for municipal sludge solidified treatment, the sludge after activation contains a lot of Fe<3+> irons, the ferric salt with a high valence can be employed as a leaching agent, heavy metal ions in the sludge can be leached, and the sludge is discharged.

The invention discloses a preparation method of a magnetic nanometer water treatment agent for oil field sewage. The preparation method includes firstly, soaking magnetic nanometer particles of Fe3O4 with water while regulating pH to 5-7 and then carrying out ultrasonic dispersion to obtain an aqueous solution containing magnetic nanometer particles of Fe3O4; stirring the aqueous solution containing magnetic nanometer particles of Fe3O4 in a container, placing the container in constant-temperature water bath for holding temperature, gradually dropwise adding sodium oleate solution, after that, continuing to stir for 20 to 40 minutes, and cooling the solution to the temperature of 45 to 55 DEG C to obtain a mixture; finally, adding block polyether modifier solution in the mixture while stirring at the temperature of 45-55 DEG C for 0.5 to 2 hours so as to obtain the magnetic nanometer water treatment agent. The water treatment agent has the advantages such as flocculation, demulsification and easiness in magnetic separation. The water treatment agent can be recovered so that consumption of the water treatment agent is lowered and water treatment cost is reduced.

The invention belongs to the field of electrode paste and discloses aqueous inorganic glue and a preparation method and application thereof. The aqueous inorganic glue is a uniform and stable solid-liquid two-phase dispersion system which is between a solution and a precipitate, the aqueous inorganic glue comprises an insoluble or a sparingly-soluble solid phase dispersion substance and a liquid phase dispersion agent, and the aqueous inorganic glue can be prepared by a liquid phase growth method or a solid phase breaking method, and can be used in the aspects of paste-coated electrodes, non-paste-coated electrode, coated electrode active materials, coated hydrogen storage alloys and the like. Metal compounds (mainly metal oxides or hydroxides) are used for preparation of aqueous inorganic glue additives to replace traditional metal compound powder additives, problems such as addition uniformity and additive utilization rate and the like can be solved, traditional organic polymer colloid can be replaced, or the dosage of the traditional organic polymer colloid is greatly reduced, negative impacts of the traditional organic polymer colloid on the battery performance can be eliminated or weakened.

The invention discloses macroporous concrete containing low grade recycled aggregates. The macroporous concrete containing low grade recycled aggregates is prepared from the following raw materials: cement, water, low grade recycled aggregates, modified starch and a sugar retarder, wherein the grain size of the low grade recycled aggregates is 5-16mm, and the bulk density is 700-900kg/m<3>. The macroporous concrete containing low grade recycled aggregates is further prepared from additional water, the use level of which is calculated according to the follow formula: delta W=mgr*wgr, wherein delta W is the use level of the additional water of the macroporous concrete containing low grade recycled aggregates; mgr is the use level of the low grade recycled aggregates and wgr is 1h water absorption of the low grade recycled aggregates. According to the invention, the grade recycled aggregates are applied to preparation of the macroporous concrete, so that the mixture state satisfies the using demand under the condition that an additive in an extra amount is not added by virtue of adjusting the raw materials and matching with the sugar retarder and modified starch.

The invention discloses an electrochemical reactor and a method for removing coexisting high-calcium and high-chloride ions from wastewater. The electrochemical reactor comprises one or more reaction tanks; anodes and cathodes are alternately placed in the reaction tank; aluminum electrodes are served as the anodes; inert electrodes are served as the cathodes. The method comprises the following steps: introducing the to-be-treated wastewater into the reaction tank of the electrochemical reactor, soaking the anodes and the cathodes in the wastewater, applying constant current between the anodes and the cathodes and continuously stirring the wastewater. According to the invention, no drug is additionally added, the possibility of causing secondary pollution is low, the reaction condition is mild and the method is not limited by the scope of the chloride ion concentration, and meanwhile, the device used for reacting is simple, the cost is lower and the realization for automation is benefited.

The invention discloses a novel environment-friendly water treatment agent, and relates to the technical field of a water treatment agent. The novel environment-friendly water treatment agent is prepared from the following raw materials in parts by weight: 15 to 22 parts of tannin, 8 to 17 parts of polyaspartic acid, 18 to 25 parts of polyaluminum sulfate, 10 to 16 parts of lime cream, 8 to 14 parts of chitin, 8 to 14 parts of seaweed glue, 5 to 12 parts of arabic gum, 9 to 12 parts of sodium hypochlorite, 5 to 10 parts of active carbon and 6 to 12 parts of quartz sand. The water treatment agent contains various ingredients; impurities in the sewage can be effectively treated; the influence of the sewage on the living environment of people can be reduced; no toxic substance is contained; green and environment-friendly effects are achieved; the preparation process is simple; the cost is low; the effect is good.

The invention discloses a multifunctional phosphorus-free corrosion and scale inhibitor based on a humic acid derivative and a preparation method thereof. Humic acid and methacrylic acid are used as raw materials to synthetize polymethacrylate humate through polymerization and esterification reaction of free radicals under the effects of a catalyst and an initiator; and then, the polymethacrylatehumate is mixed with a synergistic effect material and a solvent to prepare the phosphorus-free corrosion and scale inhibitor. The synthesized polymethacrylate humate is a novel single corrosion and scale inhibitor; a great number of hydroxide radicals and carboxyls are contained in molecular structures; straight chains and branched chains alternately extend; and the molecular weight can be regulated and controlled through a formula design. The corrosion and scale inhibitor provided by the invention does not contain phosphorus, nitrogen or zinc, can realize zero-pollution-discharge operation,has a good corrosion and scale inhibition effect when being used in a circulating cooling water system, belongs to an environmental-friendly corrosion and scale inhibitor, and has a flocculation effect.

The invention provides a domestic sewage treatment agent which comprises the following raw materials in parts by weight: 30-50 parts of rare-earth modified vermiculite, 20-40 parts of bentonite, 10-20parts of attapulgite, 2-6 parts of ferric salt, 5-10 parts of aluminum salt, 10-20 parts of aluminum polychloride, 10-20 parts of polyferric sulfate, 8-16 parts of activated carbon, 5-10 parts of hydrogen peroxide and 50-100 parts of water. The domestic sewage treatment agent provided by the invention can achieve a high removal rate on total nitrogen, total phosphorus, ammonia nitrogen, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and SS in water in a short time, does not cause secondary pollution, and has the functions of disinfection, bacterium inhibition and flocculation.

The invention discloses an electrolyte for alkali aluminum air cell battery and a matched electrolyte box thereof, and belongs to the technical field of the aluminum air cell battery. The electrolyteis composed of 2-8mol/L of potassium hydroxide or sodium hydroxide; 0.01-0.15mol/L of sodium stannate, 0.5-10g/L of alkali flocculant, and the balance of water. The lower part in the electrolyte box is partitioned into multiple chambers (6), and the upper sides of the multiple chambers are communicated; an electrolyte inlet is arranged at the upper part of one sidewall of the electrolyte box, andan electrolyte outlet is arranged at the upper part of the other sidewall of the electrolyte box; and an electrolyte inlet and the hydrogen exhaust port are arranged at the upper part of the electrolyte box. The alkali flocculant added in the electrolyte has no influence on the conductivity of the electrolyte, the viscosity and the conductivity and like physical performances of the electrolyte areunchanged after the alkali flocculant is added into the electrolyte to store for a long time; and meanwhile, the alkali flocculant has flocculation effect on the Al(OH)3 particles generated in the discharging process of the aluminum air cell, and the sediment speed of the Al(OH3) particles in the electrolyte box can be greatly improved.

The invention relates to bactericide for oil fields, in particular to poly-guanidine SFT bactericide. The poly-guanidine SFT bactericide solves the technical problems of sterilizing and removing impurities in re-injection water in oilfields and waste water in oil refineries, and comprises the following raw material by weight in parts: 10-15 parts of hydrochloric polyhexamethylene guanidine, 2-4 parts of geramine, 5-7 parts of polyhexamethylene biguanidine, 1-3 parts of chlorine hydride guanidine, 2-4 parts of ferric sulfate and 20-30 parts of water. The poly-guanidine SFT bactericide can be adopted as the bactericide and water treatment agent of the re-injection water in the oilfields and the waste water in the oil refineries, not only has excellent anti-bacterial effect and sterilization effect, but also has a certain flocculate action, has no bubbles while being mixed with water, does not need de-foaming agent, and has good effects to accumulating oil, displacing oil and treating waste water.

The invention discloses a pretreatment device for oily sludge on a horizontal screw filter pressing type offshore platform. The device comprises a medicament A storage box, a medicament B storage box,a dosing pump A, a dosing pump B, a pipeline mixer A, a pipeline mixer B, a feed pump and a medicament mixing reactor, wherein the medicament A storage box is connected with the dosing pump A; the medicament B storage box is connected with the dosing pump B; the dosing pump A and the dosing pump B are both connected with the pipeline mixer A, one end of the pipeline mixer B is connected with thepipeline mixer A, and the other end is connected with the medicament mixing reactor; an oily sludge feed inlet is formed in the inlet end of the feed pump, and the outlet end is connected with the medicament mixing reactor; a pressure filter storage tank, a filter cake storage tank and a pressure filter are arranged on the medicament mixing reactor, an outlet pump is arranged on the pressure filter storage tank, the outlet pump is connected with the medicament mixing reactor, and a filter cake outlet is formed in the filter cake storage tank; and a sedimentation sludge screw conveyor is arranged on the medicament mixing reactor, and is connected with the pressure filter storage tank.

The invention provides a water treatment flocculant and a preparation method thereof, which belongs to the technical field of environment friendliness. The water treatment flocculant comprises raw materials, namely, attapulgite, ferric trichloride and titanium trichloride. The novel attapulgite-ferric trichloride hybridized flocculant is prepared by hybridizing an inorganic flocculant ferric trichloride and attapulgite in the presence of a catalyst titanium trichloride, and the flocculant is applied to treatment on coal separation wastewater, is simple in synthesis process and low in price.

The invention relates to an iron-carbon micro-electrolysis coupling electrochemical water treatment device and method. The device comprises an iron-carbon micro-electrolysis cell, a precipitation cell, a Y-shaped filter and a drying device, wherein the upper layer is provided with an electrode box, the middle layer is provided with a drawer type iron-carbon filler box, the bottom layer is providedwith an aerator pipe, a bottom outlet of the iron-carbon micro-electrolysis cell is communicated with the upper part of the precipitation cell, a supernatant outlet in the upper layer of the precipitation cell is connected with an inlet of the Y-shaped filter, a bottom outlet of the precipitation cell is divided into two paths, one path is communicated with the upper layer of the iron-carbon micro-electrolysis cell, the other path is communicated with the inlet of the Y-shaped filter, and a first outlet of the Y-shaped filter is connected with an inlet of the drying device. According to the invention, the electrode box and the iron-carbon micro-electrolysis cell are coupled, such that the degradation-resistant organic wastewater is subjected to rapid deep treatment, the treatment speed ishigh, the effluent quality is high, and the suspended solids in the wastewater can be removed.

The invention provides a heavy metal polluted wastewater treatment agent. The heavy metal polluted wastewater treatment agent contains sodium dithiocarbamate modified corn peptide. The preparation method of the sodium dithiocarbamate modified corn peptide comprises the following step: enabling corn peptide to react with CS2 and NaOH to generate the sodium dithiocarbamate modified corn peptide. Theheavy metal wastewater treatment agent provided by the invention solves the problems of high heavy metal wastewater treatment difficulty, high treatment cost and complicated actual operation, and iswide in raw material source, low in price, convenient to use and low in treatment cost.