6results about How to "Improve retention efficiency" patented technology

The utility model discloses a kind of high-temperature trona liquid decoloration after powder activated carbon filtration recovery devices, including, tank body, tank body is provided with raw liquid import, tank body inside is provided with inner convergence pipe, multiple groups of filter components are provided on inner convergence pipe, filter cloth is provided on filter component, outer tube is connected on inner convergence pipe, and clear liquid port and circulation port are respectively provided on outer tube, further include the pre-coating mechanism for providing activated carbon coating for filter cloth on filter component, pre-coating mechanism includes pre-coating jar one and pre-coating jar two.The utility model is by being provided with pre-coating mechanism, can form bottom layer skeleton on filter cloth surface first, then fill the gap with low concentration activated carbon to form dense surface layer, to effectively intercept tiny fine powder activated carbon, significantly reduce the risk of fine powder penetrating filter cloth pore, greatly improve the interception efficiency of fine powder of filtration device, guarantee the filtration effect, solve the problem of poor filtration effect caused by fine powder penetration of existing filter cloth type filtration device.

The application relates to a method and device for determining aerosol retention efficiency of a passive containment vessel of a nuclear power plant. The method comprises the following steps: determining a target condensation model corresponding to the passive containment vessel according to the structure type of the passive containment vessel; determining droplet radius distribution data of aerosol in a narrow gap of the passive containment vessel according to the initial droplet radius of the aerosol in the passive containment vessel, geometric size data of the narrow gap of the passive containment vessel and the target condensation model; determining gravity settling velocity distribution data corresponding to the narrow gap based on the droplet radius distribution data; and determining aerosol retention efficiency corresponding to the narrow gap based on the gravity settling velocity distribution data. The method can improve the accuracy of the calculation result of the aerosol retention efficiency.

The application provides a split-hole plate type grid cleaner and relates to the technical field of water treatment equipment, which solves the technical problems of easy clogging, low interception efficiency and grid residue leakage in the prior art. The device is a split-hole plate type grid cleaner, which comprises a grid mechanism, a plurality of alternately arranged first plates and second plates, a plurality of filter holes respectively arranged on the contact sidewalls of the first plates and the second plates, a box body composed of two symmetrically arranged box plates, a plurality of back-shaped sliding grooves respectively arranged on the opposite inner sidewalls of the two box plates, a cleaning mechanism for automatically cleaning the first plates and the second plates, a conveying system comprising a transmission conveying mechanism and a cleaning conveying mechanism, the transmission conveying mechanism is used for driving the first plates and the second plates to circularly move along the back-shaped sliding grooves, and the cleaning conveying mechanism is used for accelerating the driving of the plates when the plates reach below the cleaning device, so that the first plates and the second plates are separated, and the cleaning device can efficiently clean the surfaces of the plates.

The application relates to the technical field of water treatment, and discloses an environment-friendly mine exploitation sewage treatment device, which comprises a sewage treatment tank, a flocculation assembly is arranged in the sewage treatment tank, and a sewage treatment bin is connected to the outer wall of the sewage treatment tank; a partition bin is fixedly embedded in the sewage treatment bin, metal pipes and drainage pipes are respectively embedded in the partition bin and communicate with the sewage treatment tank; a lower partition plate is also embedded in the partition bin, and a center through hole is arranged at the middle position of the lower partition plate. The environment-friendly mine exploitation sewage treatment device is provided with the partition bin, the fine particle size of the particles is greatly improved in sequence from bottom to top, the problem of electrode plate scaling of an electrochemical flocculation assembly in a subsequent sewage treatment tank is effectively avoided, and the stable operation of a deep treatment unit is ensured.

The application discloses a pickled vegetable wastewater filtering device, which comprises a filtering box body, the inside of the filtering box body is divided into a cleaning cavity and a sedimentation cavity through a partition plate. A filtering assembly is arranged on the partition plate and comprises a filtering barrel and a filtering cover with multiple layers of decreasing pore diameters. The top of the filtering barrel is limited from moving by a resisting assembly (containing a torsional spring and a torsional resisting arm). A sedimentation guide table and an openable turnover door are arranged at the bottom of the sedimentation cavity. After being filtered through multiple stages, the wastewater is guided to the sedimentation groove along an inclined surface to be deposited. The device realizes the suspension interception and pretreatment of pickled vegetable wastewater through multi-stage filtration, uniform water distribution and efficient sedimentation, and has the advantages of high filtering precision, convenient cleaning, stable structure and the like.

This invention provides a superhydrophobic mesh film loaded with superhydrophilic particles, its preparation method, and its application. The superhydrophobic mesh film comprises a mesh substrate and superhydrophilic particles loaded on the mesh substrate; the surface of the mesh substrate has a micro / nano rough structure with a roughness Ra greater than or equal to 100 nm and is modified for superhydrophobicity; the superhydrophilic particles are distributed on the surface of the mesh substrate and / or embedded in the pores of the mesh substrate, and the superhydrophilic particles include hydrophilic metal salt particles and / or hydrophilic metal-organic framework particles. This invention also provides a method for preparing the above-mentioned superhydrophobic mesh film loaded with superhydrophilic particles and its application in separating water-in-oil emulsions. The above-mentioned superhydrophobic mesh film loaded with superhydrophilic particles can efficiently trap emulsion water droplets, allowing continuous oil phase to pass through, thereby achieving water-in-oil emulsion separation.