Germicidal irradiation system and method with fluid dynamic distance maintenance to prevent biofouling.

Abstract

System, module, and method for preventing biofouling on flexible submerged surfaces (aquaculture nets and others) without abrasive hydro-washing. A support and movement subsystem, such as a trolley on a perimeter rail with a lifting mechanism, moves a conformable irradiation assembly that adapts to surface deformation. On its surface-facing side, the assembly carries germicidal radiation emitters, and on the opposite side, separation maintenance means that apply a fluid dynamic force (by reactive thrust or Bernoulli-type suction, in passive mode or in closed loop with a sensor) to maintain a substantially constant working distance from the currents, without destructive mechanical contact. A processor controls ultra-slow movement, accumulating a prophylactic germicidal dose that inactivates organic propagules before calcification, enabling operation with renewable energy sources.