Increasing cycle of water circulation in industrial cooling water system caused
accumulation of dissolving materials in circulating water. Subsequently, the problems including
scaling, fouling, corrosion and slime occurred. The multiple oxidants including chlorine dioxide,
ozone, peroxide hydrogen, and chlorine were prepared using diaphragm electrolysis method to
alleviate the problems above in the cooling system. Meanwhile multiple oxidants can also inhibit the
accumulation of biological dirt and erosion effectively. The efficiency of multiple oxidants to inhibit
precipitation of magnesium carbonate and calcium carbonate can be increased by adjustment of pH
value in the whole pipeline system to reduce corrosion rate of the pipeline and to achieve
energy-water saving goal. The results showed that the high efficiency of chlorine dioxide mixture was
an excellent bio-corrosion inhibitor and bio-accumulation bactericide. The residue concentration of
mixture oxidants are at the range of 0.05 ~ 0.25 mg ClO2/L that is high enough to restrain the growth
of micro-organisms.
Feasibility study for the production of multi-oxidants from the desalination of seawater brine