Cutting oils (emulsion 0/W) are used to decrease friction, and reduce heat in the metal industries. During use it could not be discharged to environment because of its high pollution. The breakage of emulsion and separation aqueouse phase from organic phase decreases pollution in the aqueouse phase and permits to provide a biological treatment for it. The aqueouse phase presents the main volume of original influent.
This paper describes the results of biological treatment of aqueouse phase. According to experiments, specific growth rate and yield coefficient have been determined. The experiments were conducted in 0.9
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