Methods and apparatus for treating a liquid with a gas

摘要: Methods and apparatus for treating a liquid with gas wherein feed is introduced to the initial stage of multi-stage device dissolving in liquid. Efficient mass transfer achieved by effecting gas-liquid counter flow serial stages dissolution device. The effluent from exhibits relatively high dissolved concentration which subsequently consumed reaction tank. A recycle line provided returning combining treated incoming thereby enabling further In course wastewater ozone, flotation clarifier may be enable surface coagulation impurities feed. coagulants skimmed prior introducing into subsequent device, substantially reducing ultimate ozone demand wastewater.