A mechanistic model for emissions from industrial process drains part II: The water seal

This paper dears with the second of a two-zone model developed for estimati on of volatile organic compound (VOC) emissions fi-om industrial process dr ains. Zone 2 consists of the trap volume in a sealed drain, where emissions were found to be affected by air entrainment and volatilization at the sur face of the water seal. Emissions via bubble entrainment were influenced by the air entrainment rate and degree of chemical equilibrium saturation. Ea ch of these factors was correlated with process flowrate for both intact an d disintegrated flow regimes. Entrained air bubbles Lime observed to approa ch a condition of chemical equilibrium exponentially with decreasing Henry' s law constant.