Off-gas recycle for VOC emission control: Conceptual model

Journal Article · · Journal of Environmental Engineering (New York); (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-9372(1994)120:3(573)· OSTI ID:7027031

Argaman, Y ^[1]; Musterman, J L ^[2]

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1. Technion-Israel Inst. of Technology, Haifa (Israel). Dept. of Civil Engineering
2. Eckenfelder Inc., Nashville, TN (United States)

Capture and recycle of off-gas from a complete-mix activated-sludge reactor was evaluated as an alternative VOC-control strategy to reduce the volume and cost of off-gas treatment. A mathematical model was developed to predict the fraction of individual influent VOC compounds that are biodegraded, stripped, and discharged in the liquid and gaseous effluents of an activated-sludge reactor with off-gas recycle. The model utilizes fundamental physical and biokinetic growth and substrate-removal constants for each VOC. The results indicated that for a biodegradable VOC off-gas recycle increased biodegradation and reduced stripping of the compound. The fate of a VOC depended on the relative magnitude of H[sub c], [mu][sub MAX], and K[sub s] rather than their absolute values. The fate of VOCs having certain combinations of these parameters can be controlled by process and operational parameters of the activated sludge and off-gas recycle system. These benefits are obtained without additional energy utilization.

• OSTI ID: 7027031
• Journal Information: Journal of Environmental Engineering (New York); (United States), Journal Name: Journal of Environmental Engineering (New York); (United States) Vol. 120:3; ISSN 0733-9372; ISSN JOEEDU
• Country of Publication: United States
• Language: English

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