Since the bactericidal effect of most disinfectants depends on pH, it is necessary to keep the pH within the optimal effective range of a disinfectant, so in swimming pool water treatment, it is important to regulate the pH of the pool water, this aspect than the permissible range of pH for drinking water in the domestic drinking water at 6.5 to 8.5 has more stringent requirements for people's drinking and health effects.
At pH above 7.8, HOCL (hypochlorous acid HOCl (bleach)) was reduced by half. Since the percentage of HOCL decreases as pH increases, the amount of OCL- increases. So pH is a very important water quality control indicator. The use of chlorine disinfection should keep the pH value at 7.2-7.8, the disinfection effect is the most effective and economical, in order to ensure the disinfection effect so that swimmers are comfortable and to maintain the water quality balance and other factors must be monitored pH value, China's previous swimming pool standards will be the pH range of the pool water positioning 6.5-8.5, and the gap between the developed countries is large, we believe that in the range of pH, the new swimming pool water quality should be to the advanced level of the international community. Close to the international advanced level.
Each country in the swimming water treatment, pool water pH value has a different prescribed value, in addition to our country, Japan and South Korea is set at 6.5-8.5, the other countries are specified in the 7.2-7.8 between.