6results about How to "Improve bridging" patented technology

The invention discloses a modified flocculant and equipment for rapidly removing microplastics in drinking water, and the modified flocculant is a polyaluminum sulfate-titanium tetrachloride-poly dimethyl diallyl ammonium chloride ternary composite flocculant. The pH application range value is increased by compounding with the poly dimethyl diallyl ammonium chloride, the charge neutralization bridging and netting capabilities are enhanced, and the adsorption bridging through a polymer chain is enhanced, so that the flocculant has the advantages of strong flocculation capability, quick demulsification, high settling velocity and small flocculant volume; and the water purifier has very strong purification capacity on fine suspended matters such as micro-plastics in water. Through the special flocculant adding, stirring and precipitation structure design, the removal rate of the micro-plastics is remarkably improved.

The invention discloses a sludge conditioner with a nanoscale hydrophobic material loaded with a multi-core metal chelate, which is characterized by comprising the following components in percentage by weight: 10 to 20 percent of hydrophobic material, 30 to 35 percent of chelated iron solution, 10 to 15 percent of multi-core metal salt, 5 to 10 percent of dispersing agent, 2 to 5 percent of pH (Potential of Hydrogen) regulator and the balance of deionized water. The sludge conditioner can destroy EPS of a sludge system, dissolve microbial cells in the sludge, release bound water in the sludge and reduce electrostatic repulsion, so that the hydrophobicity of the microbial cells in the sludge is improved, free water and surface water are released, and the dehydration performance of the sludge is greatly improved.

The present invention relates to a method for cleanly and efficiently separating acid hydrolyzed fiber residue components and performing in-situ polymerization reaction of residual liquid generated in the separation process at room temperature to prepare a flocculant for sewage purification. The method comprises using a low eutectic solvent (DES) method to separate high-purity lignin and cellulose components from the acid hydrolyzed fiber residue, and making full use of the characteristics of the DES residual liquid rich in lignin degradation products after multiple cycles, establishing an autocatalytic system by adding a trace amount of initiator, and performing in-situ polymerization reaction at room temperature to prepare a high-performance flocculant. The present invention is a breakthrough in that the DES residual liquid with severely reduced pretreatment effect is used as a raw material to perform in-situ polymerization reaction at room temperature through an autocatalytic system to prepare an efficient sewage treatment agent, and the high-value utilization of the acid hydrolyzed fiber residue is achieved under the principle of no waste.

This invention belongs to the field of mineral flotation technology, specifically relating to a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system and method. It includes a slurry conditioning cylinder, a separation chamber, and a mineralization cylinder connected in sequence. The slurry conditioning cylinder contains a slurry conditioning pipeline; the separation chamber contains raw ore processing pipelines and middlings processing pipelines; and the mineralization cylinder contains an eddy current mineralization pipeline. The slurry conditioning pipeline, raw ore processing pipeline, eddy current mineralization pipeline, and middlings processing pipeline are connected sequentially. After minerals and flotation reagents are conditioned in the slurry conditioning cylinder to obtain raw ore slurry, it passes through the separation chamber to obtain middlings ore slurry, which then enters the eddy current mineralization pipeline. The middlings ore slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, concentrate is collected at the top of the separation chamber. The mineral flow path designed in this invention enables efficient collisions between minerals of different particle sizes and slurry conditioning reagents, as well as between minerals and air bubbles, achieving effective flotation recovery.

The invention discloses a laser hybrid welding method for butt joint of plates with different thicknesses, which comprises the following steps of: preheating base metals and / or reducing the gap between the base metals by moving along the length direction of the gap between the base metals under the guidance of a TIG (Tungsten Inert Gas) welding gun, and welding the base metals of which the gap is reduced by moving a laser welding head along the length direction of the gap, meanwhile, the MAG welding gun moves in the length direction of the gap to weld the base metal subjected to laser welding, the gradient of the connecting position of the plates with the different thicknesses is reduced, in the moving process of the laser welding head, two servo motors in the laser welding head drive two reflectors to swing to change the propagation path of laser, and the laser welding is completed. And the laser swings on the two sides of the gap between the to-be-welded base metal in a reciprocating mode, the power of the laser is changed according to the plate thickness of the base metal, and the swing amplitude of the laser is determined according to the width of the gap. The gradient power mode enables the weld penetration depth to be more uniform, heat input to be smaller, laser power to be changed, and the problems of incomplete fusion, incomplete penetration or burn-through in the prior art are solved.

The application belongs to the field of water treatment, and discloses a plant tannin grafted composite magnetic flocculant and a preparation method and application thereof. The composite magnetic flocculant comprises polymeric aluminum ferric silicate, Chinese gallnut tannic acid, a grafting modifier, polyethyleneimine and sodium acetate buffer. After the natural green substance Chinese gallnut tannic acid is subjected to Michael addition by the grafting modifier, graft copolymerization is realized, a large number of positive charge points are provided, a stable complex is formed through winding and electrostatic interaction, more flocculation bodies can be bridged, more compact and tough alum flowers are formed, and magnetic medium material is put into the flocculation bodies when the flocculation bodies are formed, so that fine magnetic powder particles are used as precipitation nucleuses, a micro magnetic field is formed to promote the growth of the flocculation bodies, the efficient removal of TP is accelerated, the input of reagents and energy consumption is reduced, low-cost, high-efficiency and green TP removal of a sewage treatment plant is realized, the operation cost is reduced, and remarkable economic benefits are achieved.