MODELLING AND DESIGN IN BIOVENTING

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XVI International Conference on Computational Methods in Water Resources (CMWR-XVI) Ingeniørhuset

MODELLING AND DESIGN IN BIOVENTING
Author:Filippo Notarnicola <f.notarnicola@ba.iac.cnr.it> (Consiglio Nazionale Ricerche - Istituto Applicazioni del Calcolo, Sez. Bari)
Presenter:Filippo Notarnicola <f.notarnicola@ba.iac.cnr.it> (Consiglio Nazionale Ricerche - Istituto Applicazioni del Calcolo, Sez. Bari)
Date: 2006-06-18     Track: General Sessions     Session: General
DOI:10.4122/1.1000000646

Bioventing is a cleanup technology commonly used for remediation of polluted unsaturated subsoil by biodegradation. The pollutant is considered as a nutrient, natural bacteria destroy contaminants in an aerobic situation and the needed oxygen is provided by air injection and extraction wells. The mathematical models for a bioventing system are based on the theory of multi-phase and multi- component fluid transport in porous media; reactive terms describe the biological decay phenomenon and the bacteria concentration obeys population dynamic laws. The problems involved in designing a bioventing system consist of determining the number, the positioning and the pumping rates of the air injection/extraction wells considering the pollutant distribution and the subsoil characteristics.