BMB Stripper

Distillation effectively removes low level of VOCs in water, but large amount of steam energy is required. With the BMB stripper, steam energy consumption can be reduced by bringing the gas flow closer to the plug flow.
VOCs in water are removed by conventional aeration by releasing them into the air to prevent water contamination. Distillation method is effective for removing small levels of VOCs in water. However, large amounts of steam and energy are required for conventional methods because reducing the amount of steam causes the downward liquid to mix with the upward steam flow, so concentration becomes vertically uniform to the tower, disabling direction control/countercurrent flow of liquid and gas.
However with the BMB stripper, the gas flows closer to the plug flow, which maintains the vertical concentration difference. The liquid flows down in the tower as it contacts with gas and concentration of organic compounds decreases gradually to less than the permissible level, then discharged from the base of the tower. As steam flows upward, concentration of organic compounds increases, allowing for their recovery and reuse. Use of little steam allows increasing the concentration of organic compounds, so solvent phase and aqueous phase can be separated efficiently with a decanter.

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