2results about How to "Increase operating pressure" patented technology

This invention discloses a laboratory-grade ceramic membrane pressure filtration device, comprising a pressure ceramic membrane filtration unit, a pressure pump, a feed container, a valve, and a dialysate container. This invention uses an inorganic ceramic membrane as the filter medium, which is resistant to acids and alkalis, resistant to organic solvents, has a wide range of applications, high strength, and high operating pressure. It maintains high membrane integrity during installation, disassembly, and filtration, and offers high operating flux and high recovery rate. It can withstand both high-pressure steam sterilization and chemical sterilization. The sealing method is simpler than that of tubular ceramic membranes, and the dead volume is significantly smaller, requiring relatively less feed solution, making it suitable for laboratory operating environments.

This invention provides a low-energy-consumption wastewater treatment system for ferric phosphate production, comprising a mother liquor wastewater equalization tank, a wash water wastewater equalization tank, a first pretreatment unit, a second pretreatment unit, a nanofiltration unit, a reverse osmosis unit, and an evaporation unit. The outlet of the mother liquor wastewater equalization tank is connected to the inlet of the first pretreatment unit, the outlet of the first pretreatment unit is connected to the inlet of the nanofiltration unit, and the concentrate outlet of the nanofiltration unit is connected to the inlet of the evaporation unit. Similarly, the outlet of the wash water wastewater equalization tank is connected to the inlet of the second pretreatment unit, the outlet of the second pretreatment unit is connected to the inlet of the reverse osmosis unit, and the product water outlet of the nanofiltration unit is connected to the inlet of the reverse osmosis unit. This invention employs nanofiltration and two-stage reverse osmosis to achieve wastewater reuse while concentrating the wastewater, reducing the investment and operating costs of the evaporator. Furthermore, by evaporating the wastewater, it achieves zero wastewater discharge.