The system uses hot water showering for sterilization and gradual cooling with 5-section treatment. It equips automatic chlorine dosing pump which can adjust chlorine dosing quantity according to water supply volume. Hot water is produced by steam heating device. The used water flows into water flume in the machine base and recycled by showering pump for using again. If the hot water temperature does not reach preset temperature value, it will be heated again by heating device. If hot water exceeds the preset temperature (the cooling water has been heated by heat of the bottles), it will be conveyed by recycle pump to cooling tower outside of workshop and cooled for reuse.