A study on the biological treatment of coke plant liquid wastes, with high concentration of ammonium nitrogen and phenols, is presented. The anoxic-aerobic single sludge process is used, with the phenols as electron donors in the denitrification process; the inhibiting effect of toxic substances present in the wastewater is prevented by means of dilution. Tests were conducted in a laboratory scale plant to determine the minimum dilution ratio necessary to avoid inhibition and the parameters required for the designing of a full scale plant. Finally the basic design considerations of a wastewater treatment plant for a 1000 t/d coke plant are reported and capital and running costs are evaluated.
Single Sludge Anoxic–Aerobic Systems for Biological Treatment of Coke Plant Wastewaters
M. Beccari, A. C. Di Pinto, R. Passino, R. Ramadori, V. Tandoi; Single Sludge Anoxic–Aerobic Systems for Biological Treatment of Coke Plant Wastewaters. Water Sci Technol 1 February 1985; 17 (2-3): 421–432. doi: https://doi.org/10.2166/wst.1985.0148
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