Pre-treatment PuW pharm.

[Natuli]

Подскажите, пожалуйста, что обозначает Pre-treatment PuW, RO Unit , CDI, ?
Table 2.4. Water System Cleaning Conditions and Frequency

Pre-treatment PuW - Active carbon filter is sanitized by pure steam
(121°C) for 20 min

RO Unit - Sanitized with Oxonia at 25°C

CDI - Sanitized concurrent with the PuW for
approximately one hour at approximately 80°C

CDI - Storage tank is heated to approximately 80°C for
approximately 3 hours Every 3 months

[алешаBG]

PuW - purified water - сообр. контекста

[алешаBG]

RO - Reverse Osmosis - те-же соображения:-)

[алешаBG]

CDI
e.g.
Siemens installed a new hot water sanitizable Continuous DeIonization (CDI®) system downstream of an existing two pass reverse osmosis unit.