How Do We Control Microbes?
- Reduce microbes entering the system
- Pretreatment with chlorine or other antimicrobial
- Control nutrients entering the system
- Process leaks
- Phosphate and nitrogen
- Control sunlight entering the water
- Apply antimicrobial chemicals to the cooling system
- Oxidizing
- Chlorine, bromine, chlorine dioxide
- Mostly non-specific across organism types
- Non-oxidizing
- Many types – Isothiazolin, DBNPA, Glutaraldehyde, Quat Amine & Phosphonium
- Effectiveness is more specific to the organism
- Can be difficult to permit