11-16: New Biocide Options for Biofouling Control

There are a large number of biocides available to the water treatment professional however; they are not always effective due to compatibility and efficacy issues. A new non-oxidizing biocide based on tributyl tetradecyl phosphonium chloride has recently been introduced which overcomes many of the limitations of current non-oxidizing biocides. This new biocide out performs current biocides such as isothiazolone and glutaraldehyde versus algae and bacteria and is effective versus Legionella pneumophila. It is also synergistic with oxidizing biocides. The results are discussed and treatment recommendations are presented.