Membrane bioreactor treatment of oily wastes from a metal transformation mill

Author:

Zaloum Ronald1,Lessard Serge2,Mourato Diana2,Carrière Julie2

Affiliation:

1. Saint-Lawrence Center, 105 McGill Street, Montreal, Quebec, H2Y 2E7, Canada

2. Zenon Environment Inc., 10 390 L.H. Lafontaine, Anjou, Quebec, H1J 2T3, Canada

Abstract

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.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

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