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Howell Laboratories, Inc.

Seawater Treatment

Micro-fouling (slime, algae, etc.) and macro-fouling (barnacles, clams, hydroids, mussels, etc.) organisms in the marine environment find ideal growing conditions in ships’ on-board cooling circuits, particularly in titanium systems. Temperature, salinity, low flow and the presence of oxygen promote the fouling phenomenon. Hypochlorite (HOCl) is acknowledged as being the best anti-fouling agent against both micro- and macro-fouling. Our chlorinators use an electrolytic cell to produce HOCl directly from seawater. The system is installed in a machinery space near a seawater intake, and the anti-fouling agent is injected into the sea chest; from there it is dispersed throughout the sea water system.