ABSTRACT
This chapter deals with an innovative water treatment technology utilizing plasma discharges in water, with which one can increase the cycle of concentration (COC) without the fouling problem in condenser tubes. The key issue is how to precipitate and remove mineral ions such as calcium and magnesium from circulating cooling water so that the calcium carbonate scales can be prevented at the condenser tubes and at the same time the COC can be increased. In cooling water management, it is important to distinguish between water withdrawal and water consumption. One of the critical issues in cooling water management is condenser tube fouling by mineral ions such as calcium and magnesium. Since heat removal from condenser tubes requires the evaporation of pure water, the concentration of the mineral ions, such as calcium and magnesium, in the circulating cooling water increases with time.
