Full Description

Experiments were conducted in virgin granular activated carbon (GAC) columns supplied with treated surface water and the synthetic organic chemicals (SOCs) phenol and 2,4-dichlorophenol (DCP). The surface water was subjected to one of three chemical treatments: chlorination, no oxidant addition, or ozonation. The GAC columns were seeded only with microorganisms that passed through conventional treatment. The main objective was a determination of the time required to initiate significant biodegradation of trace concentrations of SOCs. The impact of naturally occurring organic compounds and the type of pretreatment on biodegradation were also of interest, as was biodegradation of sorbed SOCs. Significant biodegradation of phenol and DCP in the liquid phase commenced after one month of operation in columns with contact times of

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Edition: Vol. 81 - No. 4 Published: 04/01/1989 Number of Pages: 9File Size: 1 file , 1.7 MB