Steam Stripping Description

Steam stripping uses steam to evaporate volatile organics from aqueous wastes. Steam stripping is essentially a continuous fractional distillation process carried out in a packed or tray tower. Clean steam, rather than reboiled bottoms, provide direct heat to the column, and gas flows from the bottom to the top of the tower (Figure 11.15.5). The resulting residuals are contaminated steam condensate, recovered solvent and stripped effluent. The organic vapors and the raffinate are sent through a condenser in preparation for further purification treatment. The bottom requires further consideration as well. Possible post-treatment includes incineration, carbon adsorption, or land disposal.

less than 100 ppm to about 10% organics). Steam stripping requires an air pollution control (APC) mechanism to eliminate toxic emissions.

Status. Conventional, well documented.

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