Antifouling systems for seawater treatment

Fouling prevention of seawater systems are most commonly done by use copper dosing, that is electrolytic antifouling.

Alternative antifouling systems

The most common methods of fouling prevention in seawater systems are:

  • Electro chlorination, which is an antifouling system based on dosage of sodium hypochlorite (NaOCl) by converting salt (or sea water) by means of electrolysis.
  • Electrolytic antifouling system producing copper ions that are released into the seawater flow preventing settlement of macro marine fouling.

Electro chlorination is designed for preventing both micro and macro fouling. Electro chlorination is know as more complex and costly in installation and operation, compared with electrolytic antifouling.

Benefits of electrolytic antifouling

Benefits of the electrolytic antifouling system include i.a.:

  • Low maintenance requirement.
  • No handling or storage of chemicals required.
  • Low power requirement.
  • Environmentally acceptable.

Electrolytic antifouling is also called marine growth prevention system - MGPS, impressed current antifouling system - ICAF, electrolytic antifouling - EAF, Cuproban, copper ionization and copper dosing system.