Chlorine disinfectant with high effective chlorine content, less impurity and less harm to health should be selected for chlorine disinfection.

Chlorine disinfectant shall be added to the circulating water filtered by the filter, and the consumption of chlorine disinfectant shall be calculated and determined according to the following provisions:

1) When ozone disinfection is the main method, the residual chlorine in the pool water should be calculated as 0.3mg/l ~ 0.5mg/l (effective chlorine);

2) When chlorine disinfection is the main method, the residual oxygen in the pool water should be calculated as 0.5mg/l ~ 1.0mg/l (effective chlorine meter);

3) The residual chlorine content in the pool water shall comply with the provisions of article 3.2.1 of this regulation.

It is strictly forbidden to inject chlorine disinfectant directly into the swimming pool.

The use of chlorine disinfectants should meet the following requirements:

1) Liquid and granular chlorine disinfectants should be diluted or dissolved to prepare chlorine disinfectant with 5% effective chlorine content, which should be continuously added into the circulating water supply pipe after the water heater by metering pump, and should be completely mixed before the circulating water enters the pool;

2) The slow-release sheet chlorine disinfectant should be automatically added in a special dispenser

3) Different chlorine disinfectant dosing systems should be set separately;

The disinfectant dosing equipment shall be interlocked with the circulating water pump of the pool water circulating purification treatment system.