Recovery of PTA from the treatment of printing and dyeing industry
>The alkaline water created from printing and dyeing industry is characterized by a small amount, strong alkalinity, and heavy pollution.
>Ceramic nanofiltration membrane has excellent thermal stability, chemical stability, solvent resistance and high precision of separation, effectively removing impurities such as suspended solids and achieving the goal of reusing PTA and lye.
Recovery of PVA and alkali from the treatment of desizing process
>Desizing water is the wastewater generated by the desizing process, which has the characteristics of small water volume, high pollutant concentration, poor biodegradability and high pH value (pH=12).
>Ceramic nanofiltration membrane has excellent thermal stability, chemical stability, solvent resistance and high separation precision. More importantly, PVA and lye can be effectively separated to achieve the goal of reusing them respectively.