The performance of a membrane bioreactor treating wastewater from a metal transformation industry was compared with the ultrafiltration system at the mill. Toxicity analysis using the microtox and algal tests on the untreated and treated effluents from both systems showed a 130 fold reduction in toxicity due to the ultrafiltration step and a further 10 fold reduction due to the biological step. This resulted in a biomass which must be disposed of as a hazardous waste. In comparison with the present situation, the overall quantity of hazardous waste was reduced by a factor of 3 due to the combination of the bioreactor and the ultrafilters.
Membrane bioreactor treatment of oily wastes from a metal transformation mill
Ronald Zaloum, Serge Lessard, Diana Mourato, Julie Carrière; Membrane bioreactor treatment of oily wastes from a metal transformation mill. Water Sci Technol 1 November 1994; 30 (9): 21–27. doi: https://doi.org/10.2166/wst.1994.0436
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