Abstract
The results of an actual wastewater study and a cost analysis indicate that high-strength phenolic liquors may be effectively and economically dephenolised by means of a novel treatment scheme based on the aerobic conversion of the water-soluble phenols into insoluble coupling products. For a 99% removal of phenols from a full-strength coal-conversion wastewater which contains 4g phenols/l of wastewater, the treatment cost for the proposed coupling scheme has been estimated at $8.6/10/sup 3/ gal (1980 dollar). This compares favorably with costs of $12.9/10/sup 3/ gal for a biooxidation scheme and $12.8/10/sup 3/ gas for a solvent extraction scheme.
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