Ion-selective Measuring System

In control of nitrification and denitrification with continuous ammonium and nitrate measurement Endress+Hauser`s new ISEmax CAS40 system for measuring ammonium and nitrate is based on potentiometric measurement with ion-selective electrodes. It makes the processes of
nitrification and denitrification transparent particularly in the area of wastewater treatment. It also visibly reduces the costs for power used in aeration systems.
ISEmax measures the concentration of ammonium and nitrate quickly and
continuously in municipal waste water treatment plants. The very robust in-situ measurement takes place directly in the process, with several parameters being measured simultaneously with one sensor. A distinguishing feature of ISEmax is its short response time. The rapid trend display supports the early control and regulation of the
processes. The unit is easy to use: the measuring system does not use any chemicals, is low-maintenance and does not require external sampling. Furthermore, integrated automatic compressed-air cleaning prevents the membranes from fouling.
ISEmax covers a large measuring range: Ammonium-nitrogen: 0.1 - 1000 mg/l NH4-N; Nitrate-nitrogen: 0.1 - 1000 mg/l NO3-N
Typical applications in municipal waste water treatment plants include measuring the concentration of ammonium and nitrate directly during sludge activation, measuring the ammonium (pH-compensated) load in the inlet to sludge activation, and load-dependent aeration control.