The Radiation Graft Copolymerization of Allylmethacrylate to Polyvinylidene Fluoride to Prepare of Membrane and Its Affordability for Domestic Wastewater Treatment

In this paper, the PVDF-g-PAMA membrane was prepared through gamma-ray irradiation in a monomer aqueous solution. The irradiation products’ chemical composition was examined by Fourier transform infrared spectrometer (FTIR) and X-ray photoelectron spectroscopy (XPS), and the spectra confirmed that poly (allyl methacrylate) (PAMA) was successfully grafted onto polyvinylidene fluoride (PVDF) molecular chain to form the PVDF-g-PAMA membrane. The CA of the PVDF-g-PAMA modified membrane was reduced compared with the traditional PVDF membrane, indicating that the hydrophilicity and anti-fouling performance of the membrane had been improved. The output water of domestic sewage treated by the integrated MBR equipment with PVDF-g-PAMA membranes as the core component was stable, and the effluent quality was also improved. After examining the overall costs associated with using PVDF and PVDF-g-PAMA membranes, it was discovered that even though the complicated preparation process for modified PVDF-g-PAMA by gamma-ray irradiation increased the initial cost, its potent anti-fouling capabilities effectively reduced the cost of subsequent operation and maintenance, leading to a significant decrease in overall cost of project.