AlpHa Measurement Solutions | Oxidation-Reduction Potential (ORP) in Ballast Water Treatment
ORP in Ballast Water Treatment
Ballast water is the most common way for ships to adjust the way the vessel floats and is balanced in transit. The proper treatment of ballast water is critical to safeguard local environments. The purpose of this treatment is to mitigate the introduction of non-native organisms including fish, plant life, and microscopic organisms.
For ballast water treatment, an oxidation-reduction potential (ORP or REDOX) sensor is used to monitor the disinfection process (or reaction) by chlorine or other oxidants still in process. ORP measurements allow adjustments in chlorine production to save power or improve performance. Because ballast water is a closed or controlled system, ORP is a method to employ versus other measurements that may be specific to chlorine. Read More
Cold samples and high levels of salinity can compound the difficulty in measuring ORP. This and other challenges can be mitigated with the optimal sensor design, in particular the reference junction design, housing material, and sensing chemistry.