Pulsar UV system (PUV) currently represents the most mature excimer lamp technology. PUV system provides pulsed high-energy blackbody in broadband width. The production, generation and destruction of oxidant radicals by PUV equipment was investigated in this work and modeled by appropriate mathematical expressions. From the mass balance, solving differential equation, this model was derived: concentration versus time for oxidant radical production by PUV equipment. Removal of calcium from the bulk solution and cooling tower water was investigated by using 1) the PUV equipment, 2) the Ozonator and 3) a combination of the PUV equipment and the Ozonator. The removal of calcium was verified. The kinetics of calcium removal from water in all three cases was determined
