Behaviour of dissolved inorganic salts in the cooling water of a nuclear power plant open recirculation system and formation of water discharge

The main problem in the operation of nuclear power plants is the scale
formation of mineral impurities in an open recirculating system. However,
water discharge from an open recirculating system into water bodies can
lead to changes in the chemical equilibrium of wastewater components and
requires constant monitoring. The purpose of this study was to analyse the
behaviour of dissolved inorganic salts in water in an open recirculating
system during water treatment using the example of the Rivne Nuclear Power
Plant. Moreover, the analysis impact of their discharge with return water
in the Styr River. The dissolved inorganic salt concentration has a
significant impact on the efficiency of the system and the environment of
an open recirculating system power plant. Altogether, each dissolved
inorganic salt component was analysed separately using standard
measurement methods, using statistical methods of data processing, and
correlation analysis. In addition, the annual discharge of the dissolved
inorganic salts components was calculated and the amount of discharge was
assessed for compliance with the maximum discharge limit. Thus, the
influence of the formation of the dissolved inorganic salts and changes in
their concentration value during the discharge of returned water into a
natural water body was analysed.