Characteristics of basalt fibers

The surface of basalt fiber is smooth, the surface energy is low, after surface modification, nano-SiO2 particles are added to the surface, which effectively improves the surface roughness of the fiber and increases the effective contact area between the microorganism and the carrier; there are cations on the modified surface, the surface potential of the carrier is increased, and the surface of the carrier is positively charged, and the electrostatic suction is used to promote the fixation of microorganisms, which is conducive to the immobilization of microorganisms; the active functional groups on the modified surface increase the surface energy of the carrier, and the hydroxyl group, Carbonyl or carboxyl groups have a positive effect on the adhesion and growth of microorganisms on the surface of the carrier. Through the surface modification of the basalt fiber carrier, it has good hydrophilicity and microbial load performance, so that it can carry more biomass and maintain high microbial activity for a long time, so as to achieve more effective degradation of pollutants in water by biofilm method.