Process for treating fluid

A process for treating a fluid, comprising:

• introducing a first fluid to a circulating chamber;
• introducing a first gas into the first fluid, such that a portion of the first gas is dissolved in the first fluid and a portion of the first gas passes through the first fluid and enters a head space portion of the circulating chamber;
• mixing a portion of the first fluid drawn out from the circulating chamber and a portion of the first gas drawn out from the head space portion to form a mixture;
• spraying the mixture back into the circulating chamber by a two-fluid nozzle to form a high conductivity fluid, wherein a portion of the first gas in the head space portion is sucked into the two-fluid nozzle and mixed with the mixture in the two-fluid nozzle;
• introducing the high conductivity fluid to a fluid mixing chamber at a first flow rate;
• sensing the first flow rate of the high conductivity fluid by a proportional-integral-derivative controller;
• introducing a third fluid to the fluid mixing chamber at a second flow rate controlled by the proportional-integral-derivative controller;
• mixing the high conductivity fluid and the third fluid so that the high conductivity fluid is diluted by the third fluid in the fluid mixing chamber to form a mixed fluid;
• and
• draining the mixed fluid from the fluid mixing chamber.

A process for treating a fluid, comprising:

• introducing a first fluid to a circulating chamber;
• introducing a first gas into the first fluid, such that a portion of the first gas is dissolved in the first fluid and a portion of the first gas passes through the first fluid and enters a head space portion of the circulating chamber;
• mixing a portion of the first fluid drawn out from the circulating chamber and a portion of the first gas drawn out from the head space portion to form a mixture;
• sucking a portion of the first gas from the head space portion to mix with the mixture and spraying the mixture back into the circulating chamber to form a high conductivity fluid;
• draining the high conductivity fluid from the circulating chamber to a fluid mixing chamber;
• introducing a third fluid to the fluid mixing chamber to form a mixed fluid, wherein a conductivity of the mixed fluid is less than a conductivity of the high conductivity fluid;
• introducing the mixed fluid to a gas mixing chamber;
• and
• introducing a second gas and a third gas to the mixed fluid to form a conductivity-modified fluid.