Page 513 - Air Pollution Control Engineering

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Pretreatment only Limited data available Requires knowledgeable operator Not effective on all VOCs May require large surface area, biologically sensitive to temperature and humidity High-pressure drop Low RE for low VOC concentrations Effluent may pose disposal problems Susceptible to concentration, flowrate, and temperature changes, less efficient at low flow rates Complex sys

Reduces waste stream volume Concentrates VOCs Improved removal efficiency for minimal cost Low cost Simplicity May degrade semivolatile or nonvolatile organics May trap some metals Not susceptible to variations Good for high-temperature gas streams Simple to operate Effective for wide variety of VOCs High removal efficiencies No solvent or wastewater generated

SVE, air stripping All remediation technologies SVE, air stripping Incineration, thermal destruction SVE, air stripping

Membranes Operational controls Soil filters/ biotreatment Wet absorbers UV Source: US EPA.

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