25results about How to "Good flocculation effect" patented technology

The utility model relates to the field of blue-green algae treatment equipment, in particular to a blue-green algae collecting and flocculating device which comprises a barrel body, a flocculating agent leading-in assembly, a water pump assembly, an electric box, a first guide pipe, a second guide pipe, a blue-green algae collector, an insertion column, a ladder, a waste algae discharge pipe and a purified water discharge pipe, the flocculating agent collecting assembly with the flowmeter and the pressure controller is arranged, the dosage of a flocculating agent can be accurately controlled according to different flocculation requirements, and the flocculating agent can be uniformly guided into the barrel, so that the flocculation effect is better, and the flocculating agent is not easily wasted; according to the blue-green algae absorption device, blue-green algae can be intensively collected together through pressure in the blue-green algae absorption process and then guided into the flocculation device, absorption can be more thorough, part of blue-green algae is prevented from being precipitated or dispersed in the absorption process, and the treatment effect is better.

The utility model discloses a sewage pool flocculant throwing device, and belongs to the technical field of throwing devices. The sewage pool flocculant throwing device comprises a fixed barrel body, an annular adjusting seat is arranged at the bottom of the fixed barrel body, and the inner wall of the annular adjusting seat is in threaded connection with an annular adjusting frame; through unique structural design, flexible and accurate adjustment of the position of the nozzle group is achieved, the position of the nozzle group can be adjusted in the horizontal direction and the vertical direction by means of threaded connection of the annular adjusting frame and the annular adjusting seat and matching of the first adjusting rod, the second adjusting rod, the corresponding sliding seat and the corresponding limiting piece, and the nozzle group can be adjusted in the vertical direction. The height of the first sliding seat and the height of the second sliding seat can be accurately controlled and the throwing height can be changed by rotating the first limiting part and the second limiting part, so that the device can adjust the throwing position of the flocculating agent according to the actual conditions such as sizes of pool bodies of different sewage pools, sewage distribution and the like, the flocculating agent is promoted to be more uniformly distributed in sewage, the flocculation effect and the sewage treatment capacity are improved, and the device adapts to various complex working conditions.

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

The application provides a copper selection process of iron-containing waste residue, and comprises the following steps: adding iron powder and ammonium fluoride into titanium dioxide waste acid to obtain a titanium dioxide waste acid pre-solution after a period of reaction; S2, adding the iron-containing waste residue into the titanium dioxide waste acid pre-solution, and controlling the reaction temperature to be 20-50 DEG C; S3, after the reaction is completed, adding a nano precipitant when the pH of the solution is adjusted to 3-4.5, and adding a modified flocculating agent after a period of reaction, so that the precipitated copper is obtained after filtration and washing.

The invention relates to a water treatment agent and a preparation method and application thereof, and the preparation method comprises the following steps: (1) adding an organic additive and hydrogen peroxide into an ammonia water solution to prepare a mixed solution I, carrying out electrolytic reaction, and aging to obtain sol; (2) dissolving acrylamide and a cationic monomer in water to obtain a mixed solution II; (3) adding the mixed solution II into the sol in the step (1) to obtain a mixed solution III; and (4) adding an initiator into the mixed solution III, and carrying out polymerization reaction to prepare the water treatment agent. According to the method disclosed by the invention, introduction of heteroanions is avoided, efficient in-situ polymerization of organic components on inorganic components is improved, the problem of low molecular weight of the medicament caused by initiation of an anion inhibition chain is solved, and the prepared medicament has excellent defluorination and flocculation capabilities.

This utility model relates to a wastewater recycling and treatment device, including a support frame, a treatment tank, a tank cover, and an agitation structure. The collection structure encloses a conveying device extending from the treatment tank. A U-shaped connecting pipe is inserted into the treatment tank, extending towards the bottom of the tank and having a circular hole on its surface. A double-pass connecting pipe is connected to the end of the U-shaped connecting pipe, which is connected to a pump. The conveying frame is installed at an angle inside the treatment tank, with its outer end extending outward through the tank. A conveyor belt is movably mounted on the inner side of the conveying frame. A geared motor is mounted on the surface of an impurity collection box, with a shaft connected to its output end. The conveyor belt is mounted on the shaft surface, and has openings on its surface. An inclined scraper is also mounted on the inner side of the impurity collection box, with its upper end contacting the surface of the conveyor belt. This utility model solves the problem of existing wastewater recycling and treatment devices failing to provide continuous filtration.

The utility model relates to a splicing and inserting type coagulation reaction grid, in particular to a flocculation grid for water treatment, which is of a net-shaped structure formed by vertically and horizontally inserting hollow pipes, and frames are arranged on the edges of the net-shaped structure. The transverse pipelines are provided with holes matched with the longitudinal pipelines, and a stable framework is formed through precise insertion. Compared with the prior art, the flocculation grid has the remarkable advantages that the stability of the flocculation grid is greatly improved through the interpenetrating structure, and the flocculation grid can resist impact of complex water flow; the porosity can be flexibly changed by adjusting the number, spacing and the like of the pipelines to adapt to different water quality treatment requirements; the hollow pipe design saves materials, is light in weight and convenient to install and transport, and the pipeline can be made of metal or plastic, so that the performance and the cost are further optimized. The flocculation grid is applied to a flocculation basin, can effectively increase turbulent fluctuation of water flow and accelerate colloid flocculation, and has a good application prospect in the field of water treatment.

This invention relates to a green resource utilization process for contaminated sludge, comprising: river dredging sludge, lake and reservoir dredging sludge, culvert dredging sludge, and various types of sludge. After passing through a screen, the contaminated sludge is transported to a heavy metal release treatment facility. Following release treatment, it is transported to a Fenton process to treat organic pollutants, then to an activated particle filter to remove heavy metals. The remaining sludge is flocculated, and the flotation scum and sediment are collected and transported to a CO2 carbonization process. Finally, it is transported to a mechanical dewatering process. The resulting solids are used as improved soil for resource utilization, and the dewatered filtrate is used as reclaimed water through ion exchange.

This invention relates to a water purification agent with post-adjusted basicity, its preparation method, and its application, belonging to the field of water purification agent technology. The invention provides a method for preparing a water purification agent with post-adjusted basicity, the specific steps of which are: adding a regulator to a water purification agent to obtain a water purification agent with post-adjusted basicity; wherein the water purification agent is an iron salt solution, specifically FeCl3 solution, and the regulator is aluminum citrate solution; or the water purification agent is an aluminum salt solution, and the regulator is at least one of an organic acid and dilute hydrochloric acid. This invention, through the method of post-adjusting basicity, changes the basicity of the water purification agent system, thereby improving the utilization rate of the water purification agent. The prepared water purification agent with post-adjusted basicity ensures water quality treatment effect and stability, and reduces the dosage, thereby reducing the cost of the reagent. In high-alkalinity water bodies, the hydrolysis rate decreases by 50%, and the reagent utilization rate increases to 88%.

This application relates to the field of demulsifiers, and more specifically, to an oil sludge demulsifier, its preparation method, and its application. An oil sludge demulsifier comprises the following components in the following mass ratio: 20-35 parts of a surfactant complex, 7-12 parts of an alkyl sulfate sodium cosolvent, 0.6-1.8 parts of a stabilizer, and 48-55 parts of water; wherein the surfactant complex comprises hyperbranched polyamide amine and polyether amine modified magnetic nanoparticles. This oil sludge demulsifier improves upon the problems of existing demulsifiers, such as low dehydration capacity, slow dehydration speed, poor demulsification effect, and low oil content, thereby improving the demulsification performance and dehydration efficiency, and achieving effective separation of oil sludge.

This invention discloses a method for cyclically separating waste positive electrode current collectors and positive electrode materials using NMP, comprising the following steps: adding the positive electrode sheet to an NMP solution, stirring, and sieving to obtain a positive electrode cleaning filtrate and aluminum foil; adding a flocculant to the positive electrode cleaning filtrate, stirring, and allowing it to stand for solid-liquid separation to obtain crude NMP solution and positive electrode material powder; adding a dehydrating agent to the crude NMP solution, filtering to remove solids to obtain a recovered NMP solution, which is then recycled for the separation of the positive electrode current collector and positive electrode material. This method reuses the NMP solution repeatedly, thus reducing costs and solving the problem of high costs associated with organic solvents. Furthermore, by introducing non-solvent water into the system, the thermodynamic stability of the system is altered, increasing the solubility of PVDF and accelerating the dissolution rate.

This invention relates to fruit juice flocculants, a chitosan-coffee grounds nanoparticle composite, its preparation and application, comprising the following steps: 1) Obtaining coffee grounds powder: drying and sieving coffee grounds to obtain the desired coffee grounds powder; 2) Dissolving the coffee grounds powder in water, heating, filtering, collecting the filtrate, passing it through a D101 macroporous resin column, eluting with water, dialyzing and drying the eluent to obtain coffee grounds nanoparticles; 3) Mixing a chitosan aqueous solution (chitosan:water) at a mass ratio of 1:100-400 with the coffee grounds nanoparticles and adding it to a reaction vessel for hydrothermal reaction; dialyzing and drying the resulting solution to obtain the chitosan-coffee grounds nanoparticle composite. This invention aims to use nanoparticles with good biocompatibility, low dosage, significant flocculation effect, good antioxidant properties, and visibility to modify chitosan, synthesizing a novel flocculant and providing a new approach for fruit juice clarification.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a novel phosphorus removal air flotation machine which comprises an air flotation machine body, a mixing mechanism is arranged on the air flotation machine body, and the mixing mechanism comprises a mixing assembly and a supporting plate fixedly connected between the opposite side walls of the air flotation machine body, a rotating rod is rotatably connected to the supporting plate through a pair of first rotating holes, a group of stirring blades are fixedly connected to the rotating rod, a sliding rod is slidably connected to the supporting plate through a sliding hole, and an oval block is slidably connected to the sliding rod. The problems of poor reaction effect, influence on phosphorus removal efficiency and reduction of phosphorus removal effect due to the fact that the mixing time of an air flotation machine is short and a medicament cannot be guaranteed to be in full contact with sewage generally and the medicament and fed materials are not fully mixed are solved.

A high-efficiency micro-sand circulating sedimentation device relates to the field of wastewater treatment technology. It comprises a flocculation reaction system, a maturation reaction zone, a high-efficiency settler, a flocculant dosing device, and a micro-sand circulating system. The high-efficiency settler houses the flocculation reaction system, which includes an inner tank with a rotating stirring shaft inside. The upper part of the flocculation reaction system is a mixing reaction zone. A wastewater pipe is connected to the outside of the inner tank, and a static mixer and a check valve are installed at the upper end of the wastewater pipe. Based on traditional flocculation sedimentation tank theory, micro-sand is added to accelerate floc agglomeration and sedimentation, shortening the residence time in the sedimentation tank and achieving rapid solid-liquid separation. This invention features an integrated design, saving space and energy. The device consists of a flocculation reaction system, a maturation reaction zone, a high-efficiency settler, a flocculant dosing device, a polymer coagulant aid dosing device, a cyclone sludge separation device, a micro-sand circulating replenishment device, and a PLC electrical control system.

The application discloses the technical field of high polymer synthesis and functional material modification, and relates to a preparation method of low-molecular-weight polyacrylamide. The method comprises the following steps: firstly, preparing a double-metal doped multi-level pore carbon nanotube-covalent organic framework composite modification material, and the preparation process comprises the following steps: surface functionalization of multi-walled carbon nanotubes, growth of a covalent organic framework layer, doping of double-metal ions, and subsequent reduction and calcination treatment; then, adding deionized water, acrylamide and the modification material into a three-necked flask, stirring under nitrogen to dissolve the acrylamide, preparing an oxidation-reduction initiator solution, and dropping the initiator solution into the system under the protection of nitrogen, and polymerization reaction is carried out in a constant-temperature water bath at 19-21 DEG C. After the polymerization is completed, the product system is washed, filtered, and finally, low-molecular-weight polyacrylamide is obtained by using a vacuum freeze-drying method. The polyacrylamide prepared by the method has low and controllable molecular weight, and has good solubility and salt resistance.

This invention discloses a polyaluminum chloride-based composite flocculant and its preparation method, belonging to the field of water treatment agent technology. The preparation method includes: acid activation of natural attapulgite to obtain acid-modified nano-attapulgite crystal nuclei; hydrolysis of liquid polyaluminum chloride, basic zirconium chloride, and ferric chloride to form clusters, followed by the addition of polyepoxysuccinic acid of a specific molecular weight for dynamic shielding to obtain a shielding liquid; dispersing the crystal nuclei into the shielding liquid; and slowly adding carboxymethyl chitosan solution and anionic polyacrylamide solution sequentially at a specific rotation speed to obtain the liquid composite flocculant. This invention overcomes the problem of easy gelation of high-concentration liquid flocculants by strictly controlling the dosing sequence and the dynamic spatial shielding of polyepoxysuccinic acid; by utilizing the synergistic effect of zirconium-aluminum bimetallic flocculant and the specific chelation of carboxymethyl chitosan, excellent low-temperature and low-turbidity water removal rate is achieved while strictly controlling residual aluminum; combined with acid-modified heavy crystal nuclei, the sedimentation rate of flocs is significantly improved.

This invention discloses a method for efficiently treating colloidal tailings wastewater from non-metallic mineral processing plants, comprising the following steps: S1, pretreatment; S2, pH adjustment; S3, coagulation reaction; S4, concentration treatment; S5, aeration treatment; and S6, filtration treatment. The advantages are: by establishing a precise correspondence between water quality parameters and pH through a quantitative formula specific to non-metallic minerals, adaptive pH adjustment is achieved, solving the pain points of traditional methods for treating colloidal tailings wastewater from non-metallic minerals, improving the flocculation efficiency of coagulants, and ensuring the stability of treatment results; through precise dosing and dynamic correction, reagent consumption is significantly reduced, greatly lowering treatment costs. This provides an efficient, economical, and precise solution for treating colloidal tailings wastewater from non-metallic mineral processing plants, and has broad application prospects.

This invention relates to the field of thickener technology, specifically disclosing a high-efficiency, uniformly distributed stabilizing tank for thickeners. The tank includes a stabilizing tank body, with a feed pipe installed on the top side wall of the body. One end of the feed pipe near the stabilizing tank body is connected to the interior of the body. Multiple openings are evenly distributed through the bottom of the inner wall of the stabilizing tank body. A fixing plate is movably installed inside the stabilizing tank body, and a first auxiliary mechanism is provided on the fixing plate. By incorporating openings, connecting rods, a fixing plate, and a rotating plate, this invention allows impurities such as ore fragments and mud lumps that affect the flocculation effect of the slurry to be blocked when the slurry is discharged from the openings to the bottom of the stabilizing tank body. The filtered slurry is then discharged downwards through the openings, free from the influence of ore fragments and mud lumps. Therefore, the flocculation effect of the slurry flocs is more stable, increasing the thickener's processing efficiency.

The application provides a high-efficiency treatment and sludge concentration device for fracturing flowback fluid, which comprises an electric flocculator, a settling cylinder and a cyclone pipe. The electric flocculator comprises a plurality of flocculation tubes arranged side by side and connected in series, a U-shaped joint connected between adjacent flocculation tubes, and a power supply for supplying power to the flocculation tubes. The settling cylinder is used for separating oil, water and mud in the fracturing flowback fluid. The cyclone pipe is connected to the outlet end of the electric flocculator and extends into the settling cylinder along the tangent direction of the cross section of the settling cylinder. The electric flocculator and the settling cylinder are arranged. The electric flocculator breaks the emulsification of the fracturing flowback fluid, and flocculates the oil droplets, suspended impurities and solid impurities in the fracturing flowback fluid into flocs, so that the oil, water and mud can be separated by the subsequent settling cylinder.

The present application relates to a method for producing polyaluminum chloride and recovering sodium chloride by using by-products of methyl phosphine dichloride production, and relates to the technical field of water treatment agents. The method comprises the following steps: crushing blocky mixed salt containing sodium tetrachloroaluminate and sodium chloride, dissolving the crushed mixed salt in water, adding sodium metaaluminate, stirring and reacting, filtering, obtaining aluminum hydroxide solid and crude salt aqueous solution; putting the aluminum hydroxide solid into water, adding hydrochloric acid dropwise under heating and stirring to adjust pH, aging, adding an adsorbent, and filtering to obtain a polyaluminum chloride solution; transferring the crude salt water into a flocculation and precipitation tank, adding an oxidizing agent to oxidize phosphorus impurities, adding sodium hydroxide to adjust pH, and adding polyaluminum chloride; obtaining preliminary refined brine after precipitation is completed, and refining the preliminary brine by membrane filtration to obtain refined brine. The present application realizes circular economy, and has the advantages of simple process, cheap and easily available raw materials, safety and environmental protection, high economic benefits, etc.

The application discloses a preparation method and application of a cellulose nanofiber-based cationic polyacrylamide flocculant. During preparation, a mixed solution obtained through centrifugation is subjected to an esterification reaction under ice bath conditions to obtain a cellulose macromolecular initiator; under absolute anaerobic and ice bath conditions, a grafting reaction is completed in a flask through a Cu(0)-mediated reversible active radical polymerization method to obtain a cellulose nanofiber-based cationic polyacrylamide flocculant solution. The prepared cellulose nanofiber-based cationic polyacrylamide flocculant is used as a water treatment flocculant to remove suspended particles in suspended substance wastewater. The cellulose nanofiber-based cationic polyacrylamide flocculant prepared by the application has significantly improved cellulose dispersibility and stability, and compared with a traditional flocculation process, the flocculant has both flocculation and coagulation effects and exhibits a relatively fast settling speed.

The utility model relates to wastewater treatment field, concretely relates to a kind of fiber suspension generating device and air floatation equipment, the device includes lower plate, the middle part of lower plate is connected with dissolved air water pipe, upper plate is provided above lower plate, gap is equipped between upper plate and lower plate, the upper end of upper plate is provided with medicine mixing bin, dosing hole is provided at the top of medicine mixing bin, and outlet is provided at the bottom, one end of gap is communicated with outlet and dissolved air water pipe, the other end is communicated with air floatation reaction zone;The fiber suspension generating device provided by the utility model has high integration, simplifies raw water treatment process flow and makes the whole air floatation equipment occupy small space, and air floatation reaction zone can be injected after dissolved air water and flocculant solution are uniformly mixed, significantly improve air floatation effect, and impurities in white water can be removed more thoroughly.

The invention relates to the technical field of flocculation, and provides a hydroxamic acid type aluminum oxide flocculant and a preparation method thereof.The preparation method comprises the steps that 1, a water phase and an oil phase are mixed and emulsified, a reducing agent is added for a polymerization reaction, and a first product emulsion is obtained; (2) carrying out a first-stage reaction on the first product emulsion and N, N-carbonyldiimidazole to generate an intermediate, and then adding hydroxylamine to carry out a second-stage reaction to obtain a second product emulsion; and (3) adding a silicon compound into the second product emulsion, heating, and adding a phase inversion agent to obtain the hydroxamic acid type aluminum oxide flocculant, according to the hydroxamic acid type aluminum oxide flocculating agent, the red mud settling speed of 900-700ml can be within 5 seconds, 280-300ml of mud layer can be compressed within 3 minutes, the supernate is clear, and the flocculating capacity is better.

The utility model relates to the technical field of sewage treatment, and discloses an intelligent automatic detecting and dosing device which comprises a detecting assembly, a control assembly, a dosing assembly, a pre-dissolving assembly and a spraying assembly, the control assembly is in signal connection with the detection assembly and the dosing assembly; the pre-dissolving assembly comprises a mounting seat, a pump body, an auxiliary material box and a stirring part, the pump body and the spraying assembly are mounted on the mounting seat, and the spraying assembly comprises a spraying box and a swinging part. The pre-dissolving assembly is arranged, so that a flocculating agent can be pre-dissolved firstly, and the problem that the dissolving effect is poor due to the fact that the flocculating agent floats on the water surface after being directly thrown into a sewage treatment tank is solved; by arranging the spraying assembly, the spraying box which swings in a reciprocating mode can cover the treatment pond with the flocculating agent solution as much as possible, the distribution uniformity of the flocculating agent solution in the treatment pond is improved, impurities in the treatment pond can be rapidly precipitated, and the operation efficiency is greatly improved.