4results about How to "Improve desalination performance" patented technology

This utility model discloses a portable desalination device for metallic artifacts, belonging to the field of cultural relic protection technology. It includes a mobile frame with casters fixed to the bottom via spring shock absorbers. A desalination assembly is located on the top of the frame, comprising a desalination chamber, a lid, partition grooves, partition plates, threaded grooves, several connecting rods, and clamps. The desalination assembly, with its cross-shaped partition grooves and snap-fit ​​partition plates within the desalination chamber, allows for flexible adjustment of the internal space dimensions, adapting to metallic artifacts of different sizes and volumes, significantly improving the device's adaptability. Furthermore, the connecting rods mounted via the threaded grooves flexibly secure the clamps and a waterproof camera. The monitoring sensor probe within the clamps can acquire multi-dimensional data at different depths of the solution in real time, while the waterproof camera simultaneously records the artifact's condition, eliminating reliance on manual sampling and enriching parameter monitoring methods.

This application discloses a calcareous sand desalination device, including a mixing tank containing calcareous sand, and further comprising a delivery assembly, a stirring assembly, a drive assembly, a transmission assembly, and a filtration assembly. The delivery assembly is used to deliver demineralized water into the mixing tank; the stirring assembly is disposed inside the mixing tank; the drive assembly is connected to the mixing tank to enable the mixing tank to rotate in a vertical plane; the transmission assembly is connected to the stirring assembly to agitate the calcareous sand and demineralized water while the mixing tank rotates; the filtration assembly is located below the mixing tank to separate the demineralized water and the desalinated calcareous sand. The aim is to improve the desalination effect on calcareous sand.

This application relates to the field of reverse osmosis membranes, specifically disclosing a highly stable, easily stored, low-pressure reverse osmosis membrane and its preparation method. The highly stable, easily stored, low-pressure reverse osmosis membrane comprises a polysulfone-based membrane and a polyamide functional layer. The polyamide functional layer is formed by an interfacial polycondensation reaction between an aqueous phase containing organic amines and an oil phase containing acyl chlorides. The aqueous phase also includes silane-modified aminopolyethylene glycol dopamine and an antioxidant. The reverse osmosis membrane of this application utilizes chemical crosslinking modification and the addition of antioxidants to avoid poor stability of the low-pressure reverse osmosis membrane during storage and performance degradation after the membrane is placed.

The invention relates to the technical field of reverse osmosis composite membranes, in particular to a high-temperature-resistant reverse osmosis membrane prepared based on acyl chloride graphene oxide and ultrasonic assistance and a preparation method of the high-temperature-resistant reverse osmosis membrane. According to the preparation method, acyl chloride and graphene oxide react to synthesize acyl chloride graphene oxide (GO-COCl), an isoparaffin solvent Isopar G serves as a dispersing agent to be added into an organic phase, meanwhile, an organic phase solution is subjected to ultrasonic-assisted treatment before interfacial polymerization, and GO-COCl is evenly dispersed in the organic phase; and finally, through interfacial polymerization of m-phenylenediamine (MPD) and 1, 3, 5-tribenzoyl chloride (TMC), the composite reverse osmosis membrane is prepared. According to the method, GO-COCl can be added into the PA layer instead of the surface or the substrate through crosslinking, acyl chloride in GO-COCl reacts with an amine monomer to form a polyamide chain, and meanwhile, an organic phase solution is subjected to ultrasonic dispersion before interfacial polymerization, so that a uniform GO-COCl sheet is clamped in the PA layer, and the surface of the PA layer is coated with the GO-COCl. The flux, the desalting performance and the stability of the composite reverse osmosis membrane are favorably improved.