2results about How to "Meet raw material demand" patented technology

This invention relates to the field of brine purification technology in the salt production industry, and discloses a silicon carbide flat-sheet membrane brine purification system and process for the salt production industry. The invention uses a modular silicon carbide flat-sheet membrane filtration unit as its core, combined with a minimalist pretreatment feeding unit. Through the modular collaborative design of an open-top membrane tank shell at atmospheric pressure, a detachable stackable membrane tower, a negative pressure water production component, an array-type aeration component, and a refined brine backwashing component, it achieves negative pressure suction filtration with the membrane tower completely submerged in the crude brine, directly treating crude brine containing calcium and magnesium precipitates without the need for pre-filtering and circulation equipment. The modular design of each component in this system allows for easy assembly and disassembly, high filtration accuracy, low energy consumption, strong anti-fouling properties, and stable production of calcium and magnesium precipitates. 2+ +Mg 2+ The refined brine with ≤1ppm and SS≤1ppm has significant advantages over traditional ceramic membrane systems in terms of equipment investment, operating costs, membrane life and industrial adaptability. It can be widely used in brine refining in the salt industry and brine refining in chlor-alkali systems.

The invention belongs to the technical field of gene engineering, and discloses an application of a PagPUB9 gene in regulation and control of poplar growth and development, the nucleotide sequence of the PagPUB9 gene is shown as SEQ ID NO.1, and through overexpression of the PagPUB9 gene, poplar growth and development are promoted. The invention provides the application of the PagPUB9 gene in regulating and controlling the growth and development of the poplar, the growth and development speed of the poplar can be promoted through overexpression of the PagPUB9 gene, xylem differentiation and stem thickening are promoted while a poplar plant becomes high, and therefore a new gene resource and a new molecular breeding means are provided for genetic improvement of the poplar.