Many Korean communities have utilized anthracite briquettes as a major fuel for house heating. This study was conducted to evaluate the use of combusted briquettes as media for a fixed-film biological process. Various industrial wastes as well as municipal wastewater were introduced into the aeration tank where the combusted anthracite briquettes were placed. The study results suggest that the briquette system could produce effluent BOD concentrations fairly similar to those from the units using plastic media.

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