Patent ID: 6054030
Filing Date: 2000-04-25
Classification: G01N,Y02A

Abstract:
A system for monitoring biocide treatment of an aqueous medium, the system comprising:a probe comprising a metal working electrode and a sacrificial electrode of a metal less noble than said metal working electrode, said metal working electrode and said sacrificial electrode being exposed in a flowing aqueous medium receiving a biocide treatment;an electrical resistance connecting said metal working electrode and said sacrificial electrode, said electrical resistance ensuring a passively generated difference between said metal working electrode and said sacrificial electrode of at least 0.4 volts which ensures simultaneous and continuous determination of a biofilm growth on said probe and a chlorine concentration of the flowing aqueous medium;a processor connected to said probe and acquiring data therefrom, said processor displaying the data and directing start, modification and completion of the biocide treatment based on the data; andan auxiliary probe having two electrodes of different nobility metals that are in the flowing aqueous medium and connected by a further electrical resistance so that said auxiliary probe ensures determination of total oxidant concentration of the flowing aqueous medium, and a device for keeping said two electrodes of said auxiliary probe free of a biofilm.